KR20220059354A - Vacuum adiabatic body - Google Patents

Abstract

A vacuum adiabatic body according to the present invention may include: a first plate; a second plate; and a sealing unit that seals the first plate and the second plate to provide a vacuum space unit. Optionally, the vacuum adiabatic body may include a support that maintains the vacuum space unit. Optionally, the vacuum adiabatic body may include a heat transfer resistor that reduces an amount of heat transfer between the first plate and the second plate. Optionally, the vacuum adiabatic body may include a component coupling unit connected to at least one of the first and second plates so that a component is coupled thereto. Optionally, another adiabatic body provided on a peripheral portion of at least one of the first plate and the second plate may be provided. Optionally, a hanging unit provided on the first plate may be provided. Optionally, a portion of the support that overlaps with or is adjacent to the area on which the hanging unit is disposed may have a relatively high degree of resistance to deformation of the support due to a load applied from the outside of the vacuum space unit when compared to other portions. Accordingly, the vacuum adiabatic body may be prevented from being deformed or damaged.

Description

Vacuum insulator {Vacuum adiabatic body}

The present invention relates to a vacuum insulator.

The insulation performance can be improved by constructing an insulation wall with vacuum. At least a part of the inner space is made of vacuum, and a device for forming a thermal insulation effect may be referred to as a vacuum insulator.

The applicant has proposed 10-2015-0109722 in order to provide a vacuum insulator. In the above technique, the first and second plates, the side plate, and the conductive resistance sheet are fastened to each other with a plurality of seals. The prior art has a problem in that mass production is difficult because the number of parts and sealing parts are arranged.

The prior art has confirmed that the parts inside the vacuum space are vulnerable to impact. For example, the part inside the vacuum space maintains its shape by itself without a support action by a support structure exemplified by a foam member or the like. Therefore, when there is an external shock, the parts placed inside the vacuum space part are often damaged. Accordingly, there is a problem that the thermal insulation performance of the vacuum insulator is rapidly deteriorated by aging.

The prior art does not consider the parts placed outside the vacuum space. For example, there is no consideration of the impact applied to the vacuum space by parts outside the vacuum space.

Republic of Korea Application No. 10-2015-0109724, vacuum insulator

The present invention is to solve the above problems, and provides a vacuum insulator capable of preventing damage to internal parts of the vacuum space.

The present invention provides a vacuum insulator that prevents the deterioration of the parts placed inside the vacuum space portion to prevent deterioration of thermal insulation performance and increases the service life of the product.

The present invention provides a vacuum insulator capable of withstanding the impact generated during operation of a device to which the vacuum insulator is applied.

The present invention provides a vacuum insulator having a large force to withstand the load applied in the height direction of the vacuum space portion.

The vacuum insulator of the present invention, the first plate; second plate; It may include a sealing part sealing the first plate and the second plate to provide a vacuum space part. Optionally, it may include a support for maintaining the vacuum space portion. Optionally, a heat transfer resistor for reducing the amount of heat transfer between the first plate and the second plate may be included. Optionally, it may include a part fastening part connected to at least one of the first and second plates to which the parts are coupled. Optionally, it may include at least one of additional thermal insulation provided on a periphery of at least one of the first plate and the second plate. Accordingly, it is possible to provide a vacuum insulator that can achieve the industrial purpose.

Optionally, the refrigerator according to another aspect of the present invention may include a body selectively adjacent to the first plate and accommodating the article. Optionally, the radiation resistance sheet may not have a portion overlapping the extension line of the inner surface of the body. Optionally, according to the arrangement of the radiation-resistance sheet, it is possible to prevent deformation of the radiation-resistance sheet due to a load generated by the movement between the main body and the first plate. Optionally, the load may include a dynamic load.

Optionally, in the refrigerator according to another aspect of the present invention, a portion overlapping or adjacent to an extension line of the inner surface of the main body among the supports may have a relatively large degree of resistance to deformation of the support due to the load compared to other portions. there is.

According to the present invention, in the area of the vacuum space portion to which the impact is applied, the member vulnerable to the impact is prevented from avoiding or interfering. Accordingly, it is possible to prevent damage to the internal components of the vacuum space and prevent the failure of the vacuum insulator.

According to the present invention, by reducing the effect of load and impact on the radiation resistance sheet, it is possible to prevent the contact between the radiation resistance sheet and other components to prevent deterioration of the insulation performance. According to this, there is an advantage in that the duration of the insulation performance of the vacuum insulator is increased.

According to the present invention, when a vacuum insulator is applied to a door, deformation and damage of internal parts of the vacuum space can be prevented due to the impact of a dynamic load transmitted along the inner surface of the main body when the door is opened and closed. Accordingly, it is possible to prevent failure of the vacuum insulator and improve the thermal insulation performance.

The present invention can provide a support having a large force to withstand the compressive stress generated in the hanger and the compressive stress caused by the interaction between the body and the door. Here, the compressive stress is a force generated in the height direction of the vacuum space portion, and may be in the same direction as the load of the support applied by the vacuum pressure.

1 is a perspective view of a refrigerator according to an embodiment;
2 is a view schematically showing a vacuum insulator used for a main body and a door of a refrigerator;
3 is a view showing an embodiment of a support for holding a vacuum space portion.
4 is a view for explaining an embodiment of a vacuum insulator centering on a heat transfer resistor.
5 is a view for explaining the vacuum pressure inside the vacuum space.
6 is a graph for observing the process of evacuating the inside of the vacuum insulator with time and pressure when a support is used.
7 is a graph comparing vacuum pressure and gas conductivity.
8 is a view showing various embodiments of a vacuum space unit.
9 is a view for explaining a conductive resistance sheet placed on a heat transfer path.
10 is a view for explaining a heat transfer path between first and second plates having different temperatures;
11 is a view for explaining a branching portion on a heat transfer path between first and second plates having different temperatures;
12 is a perspective view and a partial cross-sectional view of a vacuum insulator, in which FIG. 12 (a) is a vacuum insulator with a lower left side and an upper right side, and FIG. 12 (b) is 1-1' of FIG. 12 (a). It is a cross-sectional perspective view, and FIG. 12(c) is a cross-sectional view of 1-1'.
13 is a perspective view and a cross-sectional view illustrating a cross section of 2-2' of FIG. 12(a), (a) is a cross-sectional perspective view, (b) is a cross-sectional view.
14 to 16 are views related to a cross-section taken along line 3-3' of FIG. 12(a), FIG. 14 is a cross-sectional view taken along line 3-3' of FIG. 12(a), and FIG. It is an enlarged cross-sectional view, and FIG. 16 is a cross-sectional perspective view.
17 and 18 are views showing an embodiment of the flange, and are views for explaining an embodiment in which the extension direction of the flange and the position of the flange are different.
19 is a cross-sectional view of the vacuum insulator in which the support is shown;
20 is a side view of the basket and the hook.
21 is a cross-sectional view of the vacuum insulator showing the support and the heat transfer resistor;
22 is a cross-sectional view of the second side of the vacuum insulator;
It is a figure explaining the relationship between a main body and a support.
24 is a view for explaining the effect when the vacuum insulator of the embodiment is installed.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the embodiments presented below, and those skilled in the art who understand the spirit of the present invention may add other embodiments included within the scope of the same spirit to components or components, Changes, deletions, and additions may be easily suggested, but this will also be included within the scope of the present invention. The present invention may have many embodiments in which the idea is implemented, and in each embodiment, any part may be replaced with a corresponding part or a part having a related action in another embodiment. The present invention may be any one of the examples presented below or an example in which two or more are combined.

The present invention, the first plate; second plate; a vacuum space formed between the first and second plates; It may be a vacuum adiabatic body including a seal for providing the vacuum space (vacuum space). The vacuum space part may be a space in a vacuum state provided in the inner space between the first plate and the second plate. The sealing part may seal the first plate and the second plate to provide an internal space provided in a vacuum state. The vacuum insulator may optionally include a side plate connecting the first plate and the second plate. In the present invention, the expression plate may mean at least one of the first and second plates and the side plate. At least a portion of the first and second plates and the side plate may be integrally formed, or at least a portion may be sealed with each other. Optionally, the vacuum insulator may include a support for maintaining the vacuum space portion. The vacuum insulator selectively reduces the amount of heat transfer between the first space provided in the vicinity of the first plate and the second space provided in the vicinity of the second plate, or between the first plate and the second plate. A thermal insulator may be included to reduce the amount of heat transfer. Optionally, the vacuum insulator may include a fastening part formed on at least a portion of the plate. Optionally, the vacuum insulator may include another adiabatic body. The additional insulator may be provided to be connected to the vacuum insulator. The additional heat insulator may be a heat insulator having the same or a different degree of vacuum as the vacuum insulator. The additional heat insulator may be a heat insulator that does not include a vacuum level or lower than that of the vacuum insulator or a part in a vacuum state therein. In this case, it may be advantageous to connect another object to the additional thermal insulator.

In the present invention, the direction along the wall defining the vacuum space may include a longitudinal direction of the vacuum space and a height direction of the vacuum space. A height direction of the vacuum space portion may be defined as any one direction among virtual lines connecting a first space and a second space to be described later while penetrating the vacuum space portion. The longitudinal direction of the vacuum space portion may be defined as a direction perpendicular to the set height direction of the vacuum space portion. In the present invention, that the object A is connected to the object B means that at least a part of the object A and at least a part of the object B are directly connected, or at least a part of the object A and at least a part of the object B are connected to the objects A and B It can be defined as being connected through an intermediate. The medium may be provided to at least one of object A and object B. The connection may include that the object A is connected to the medium, and the medium is connected to the object B. A part of the medium may include a part connected to either one of object A and object B. The other part of the medium may include a part connected to the other of the object A and the object B. As a variant, the connection of the object A to the object B may include that the object A and the object B are integrally prepared in a shape connected in the above-described manner. In the present invention, an embodiment of the connection may be a support, a combination, or a seal, which will be described later. In the present invention, that object A is supported by object B means that object A is supported by object B in one or more of +X, -X, +Y, -Y, +Z, and -Z axis directions. It can be defined that movement is restricted. In the present invention, an embodiment of the support may be a coupling or sealing, which will be described later. In the present invention, that the object A is coupled to the object B may define that the object A is restricted from moving by the object B in one or more of the X, Y, and Z-axis directions. In the present invention, an embodiment of the coupling may be a sealing to be described later. In the present invention, that the object A is sealed to the object B may define a state in which the movement of the fluid is not allowed in the portion where the object A and the object B are connected. In the present invention, one or more objects, i.e., object A and at least a portion of object B, include a portion of object A, all of object A, a portion of object B, all of object B, a portion of object A and a portion of object B; It can be defined as including part of object A and all of object B, all of object A and part of object B, and all of object A and all of object B. In the present invention, that the plate A may be a wall defining the space A may be defined as that at least a part of the plate A may be a wall defining at least a part of the space A. That is, at least a part of the plate A may be a wall forming the space A, or the plate A may be a wall forming at least a part of the space A. In the present invention, when the object is divided into three equal parts based on the longitudinal direction of the object, the central portion of the object may be defined as a central portion among the three divided portions. The peripheral portion of the object may be defined as a portion located to the left or right of the central portion among the three divided portions. The peripheral portion of the object may include a surface in contact with the central portion and a surface opposite thereto. The opposite side may be defined as a border or edge of the object. Examples of the object may be a vacuum insulator, a plate, a heat transfer resistor, a support, a vacuum space, and various parts to be introduced in the present invention. In the present invention, the degree of heat transfer resistance (Degree of heat transfer resistance) indicates the degree to which an object resists heat transfer, and can be defined as a value determined by the shape including the thickness of the object, the material of the object, and the processing method of the object. can The heat transfer resistance may be defined as the sum of a degree of conduction resistance, a degree of radiation resistance, and a degree of convection resistance. It may include a heat transfer path formed between spaces with different temperatures, or a heat transfer path formed between plates having different temperatures.For example, the vacuum insulator of the present invention provides It may include a heat transfer path through which cold is transferred toward the high plate In the present invention, the curved portion includes a first portion in which the object extends in a first direction and a second portion in which the object is different from the first direction. When a second portion extending in the direction is included, it may be defined as a portion connecting the first portion and the second portion (including 90 degrees).

In the present invention, the vacuum insulator may optionally include a fastening part. The part fastening part may be defined as a part provided on the plate to which parts are connected. The part connected to the plate may be defined as a penetrating part disposed to penetrate at least a part of the plate and a surface part disposed to be connected to the surface of at least a part of the plate. At least one of a penetrating part and a surface part may be connected to the part fastening part. The penetrating part may be a part that mainly forms a path through which a fluid (electricity, refrigerant, water, air, etc.) passes. In the present invention, a fluid is defined as any kind of flowing body. The fluid includes moving solids, liquids and gases and electricity. For example, the component may be a component that forms a path through which a refrigerant for heat exchange passes, such as a Suction Line Heat Exchanger (SLHX) or a refrigerant pipe. The component may be a wire that supplies electricity to the device (Apparatus). As another example, the component may be a component that forms a path through which air can pass, such as a cold air duct, a hot air duct, and an exhaust port. As another example, the component may be a path through which a fluid such as coolant, hot water, ice, and defrost water may pass. The surface parts include peripheral insulation, side panels, foam injected, pre-prepared resin, hinges, latches, baskets, drawers, shelves, lights, sensors, evaporators, front decorations, and hotlines, heaters, exterior covers, additional insulation may include at least one of

As an example to which the vacuum insulator is applied, the present invention may include an apparatus having the vacuum insulator. An example of the device is an appliance. As an example of the appliance, a home appliance including a refrigerator, a cooking appliance, a washing machine, a dishwasher, and an air conditioner, etc. can be heard As an example in which the vacuum insulator is applied to a device, the vacuum insulator may form at least a portion of a body and a door of the device. As an example of the door, the vacuum insulator may form at least a portion of a general door and a door-in-door (DID) in direct contact with the body. Here, the door-in-door may mean a small door placed inside the general door. As another example to which the vacuum insulator is applied, the present invention may include a wall having the vacuum insulator. An example of the wall may be a wall of a building including a window.

Hereinafter, the present invention will be described in detail with reference to the drawings. Each drawing accompanying the embodiment may be different from, exaggerated, or simply indicated from the actual article, and detailed parts may be briefly indicated with features. The embodiment should not be interpreted as being limited only to the size, structure, and shape presented in the drawings. In the embodiments accompanying each drawing, some configurations of the drawings of one embodiment may be applied to some configurations of the drawings of other embodiments, and some structures of certain embodiments may be applied to some structures of other embodiments, provided that the descriptions do not conflict with each other. can In the description of the drawings for the embodiment, the same reference numerals may be assigned to different drawings as reference numerals of specific components constituting the embodiment. Components having the same reference number may perform the same function. For example, the first plate constituting the vacuum insulator has a portion corresponding to the first space throughout all embodiments, and is indicated by reference numeral 10. The first plate may have the same number for all embodiments and may have a portion corresponding to the first space, but the shape of the first plate may be different in each embodiment. Not only the first plate, but also the side plate, the second plate, and an additional thermal insulator can be understood as well.

1 is a perspective view of a refrigerator according to an embodiment, and FIG. 2 is a diagram schematically illustrating a vacuum insulator used for a main body and a door of the refrigerator. Referring to FIG. 1 , a refrigerator 1 includes a main body 2 provided with a cavity 9 for storing stored items, and a door 3 provided to open and close the main body 2 . The door 3 is rotatably or slidably disposed to open and close the cavity 9 . The cavity 9 may provide at least one of a refrigerating compartment and a freezing compartment. A cold source for supplying cold air to the cavity may be provided. For example, the cooling source may be an evaporator 7 that evaporates a refrigerant to take heat. The evaporator 7 may be connected to a compressor 4 that compresses the refrigerant evaporated to the cooling source. The evaporator 7 may be connected to a condenser 5 condensing the compressed refrigerant to the cooling source. The evaporator 7 may be connected to an expander 6 that expands the refrigerant condensed in the cooling source. A fan corresponding to the evaporator and the condenser may be provided to promote heat exchange. As another example, the cooling source may be a heat absorbing surface of the thermoelectric element. A heat absorbing sink may be connected to the heat absorbing surface of the thermoelectric element. A heat sink may be connected to a heat radiation surface of the thermoelectric element. A fan corresponding to the heat absorbing surface and the heat generating surface may be provided to promote heat exchange.

Referring to FIG. 2 , the plates 10 , 15 , and 20 may be walls defining the vacuum space. The plate may be a wall dividing the vacuum space and an external space of the vacuum space. An example of the plate is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

The plate may be provided as one part or may be provided to include at least two parts connected to each other. As a first example, the plate may include at least two parts connected to each other in a direction along a wall defining the vacuum space. Any one of the two parts may include a part (eg, the first part) forming the vacuum space part. The first part may be a single part or may include at least two parts that are sealed to each other. The other one of the two parts may include a part (eg, a second part) extending from the first part of the first plate in a direction away from the vacuum space part or extending in an inner direction of the vacuum space part. . As a second example, the plate may include at least two layers connected to each other in a thickness direction of the plate. Any one of the two layers may include a layer (eg, the first portion) forming the vacuum space portion. The other one of the two layers may include a portion (eg, a second portion) provided in an external space (eg, the first space and the second space) of the vacuum space unit. In this case, the second part may be defined as an outer cover of the plate. The other one of the two layers may include a portion (eg, a second portion) provided in the vacuum space portion. In this case, the second part may be defined as an inner cover of the plate.

The plate may include a first plate 10 and a second plate 20 . One surface of the first plate (“the inner surface of the first plate”) provides a wall defining the vacuum space portion, and the other surface of the first plate (“the outer surface of the first plate”) defines the first space wall can be provided. The first space may be a space provided in the vicinity of the first plate, a space formed by the device, or an internal space of the device. In this case, the first plate may be referred to as an inner case. When the first plate and the additional member form the inner space, the first plate and the additional member may be referred to as an inner case. The inner case may include two or more layers. In this case, one of the plurality of layers may be referred to as an inner panel. One surface of the second plate (“the inner surface of the second plate”) provides a wall defining the vacuum space, and the other surface of the second plate (“the outer surface of the second plate”) defines the second space. wall can be provided. The second space may be a space provided near the second plate, another space formed by the device, or an external space of the device. In this case, the second plate may be referred to as an outer case. When the second plate and the additional member form the outer space, the second plate and the additional member may be referred to as an outer case. The outer case may include two or more layers. In this case, one of the plurality of layers may be referred to as an outer panel. The second space may be a space having a higher temperature than the first space or a space having a lower temperature than the first space. Optionally, the plate may include a side plate (15). In FIG. 2 , the side plate may also perform a function of the conductive resistance sheet 60 to be described later, depending on the location of the side plate. The side plate may include a portion extending in the height direction of the space formed between the first plate and the second plate, or may include a portion extending in the height direction of the vacuum space portion. One surface of the side plate may provide a wall defining the vacuum space portion, and the other surface of the side plate may provide a wall defining an external space of the vacuum space portion. The outer space of the vacuum space part may be at least one of the first space and the second space, or a space in which an additional heat insulating material to be described later is disposed. The side plate may be integrally formed by extending at least one of the first plate and the second plate, or may be a separate component connected to at least one of the first plate and the second plate.

The plate may optionally include curved portions. In the present invention, a plate including a curved portion may be referred to as a bent plate. The curved portion may include at least one of the first plate, the second plate, the side plate, between the first plate and the second plate, between the first plate and the side plate, and between the second plate and the side plate. can be provided on The plate may include at least one of a first curved portion and a second curved portion, an example of which is as follows. First, the side plate may include the first curved portion. A portion of the first curved portion may include a portion connected to the first plate. Another part of the first curved part may include a part connected to the second curved part. In this case, the radius of curvature of the first curved portion and the second curved portion may be large. Another portion of the first curved portion may be connected to an additional straight line portion or an additional curved portion provided between the first curved portion and the second curved portion. In this case, the curvature radius of the first curved portion and the second curved portion may be small. Second, the side plate may include the second curved part. A portion of the second curved portion may include a portion connected to the second plate. Another portion of the second curved portion may include a portion connected to the first curved portion. In this case, the radius of curvature of the first curved portion and the second curved portion may be large. Another portion of the second curved portion may be connected to an additional straight line portion or an additional curved portion provided between the first curved portion and the second curved portion. In this case, the curvature radius of the first curved portion and the second curved portion may be small. Here, the straight portion may be defined as a portion having a greater radius of curvature than the curved portion. The straight part may be understood as a part having a greater radius of curvature than a perfect plane or curved part. Third, the first plate may include the first curved portion. A portion of the first curved portion may include a portion connected to the side plate. A portion connected to the side plate may be provided at a position away from the second plate in a portion in which the first plate extends in the longitudinal direction of the vacuum space portion. Fourth, the second plate may include the second curved portion. A portion of the second curved portion may include a portion connected to the side plate. A portion connected to the side plate may be provided at a position away from the first plate in a portion in which the second plate extends in the longitudinal direction of the vacuum space portion. The present invention may include a combination of any one of the first and second examples described above and any one of the third and fourth examples described above.

In the present invention, the vacuum space 50 may be defined as a third space. The vacuum space may be a space in which vacuum pressure is maintained. In the present invention, the expression that A has a higher degree of vacuum than B means that the vacuum pressure of A is lower than that of B.

In the present invention, the sealing part 61 may be a portion provided between the first plate and the second plate. Examples of sealing are as follows. The present invention may be any one of the following examples, or a combination of two or more. The sealing may include fusion welding for joining the plurality of objects by melting at least a portion of the plurality of objects. For example, the first plate and the second plate are fused by laser welding or the like in a state where a medium is not interposed, or a medium such as a filler metal is interposed between a part of the first and second plates and a part of the part fastening part. It may be fused by high-frequency brazing or the like in the finished state, or fused by a medium (eg, a melting bond) in which the plurality of objects generate heat. The sealing may include pressure welding for joining the plurality of objects by mechanical pressure applied to at least a portion of the plurality of objects. For example, as a part connected to the part fastening part, an object made of a material having a lower degree of deformation resistance than the plate may be press-contacted by a method such as a pinch-off method.

A machine room 8 may be optionally provided on the outside of the vacuum insulator. The machine room may be defined as a space in which parts connected to the cooling source are accommodated. Optionally, the vacuum insulator may include a tube 40 . The tube may be provided on either side of the vacuum insulator to exhaust the air of the vacuum space unit 50 . Optionally, the vacuum insulator may include a conduit 64 penetrating the vacuum space 50 for installation of parts connected to the first space and the second space. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

3 is a view showing an embodiment of a support for maintaining the vacuum space portion. An example of the support is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

The supports 30 , 31 , 33 , and 35 are provided among the plate and a heat transfer resistor to be described later so as to reduce deformation of at least some of the vacuum space 50 , the plate, and a heat transfer resistor to be described later by an external force. It may be provided to support at least a portion. The external force includes at least one of a vacuum pressure and an external force excluding the vacuum pressure. When the deformation occurs in a direction in which the height of the vacuum space portion decreases, the support may reduce an increase in at least one of radiant heat conduction, gas heat conduction, surface heat conduction, and supporter heat conduction, which will be described later. The support may be an object provided to maintain a gap between the first plate and the second plate, or an object provided to support the heat transfer resistor. The support has a greater degree of strain resistance than the plate, or is provided in a portion having a weak degree of strain resistance among parts constituting the vacuum insulator, the device having the vacuum insulator, and the wall having the vacuum insulator. can In the present invention, the degree of deformation resistance indicates the degree to which an object resists deformation due to an external force applied to the object, and the shape including the thickness of the object, the material of the object, and the processing method of the object It can be defined as a value determined by Examples of the portion in which the strain resistance is weak may be a vicinity of a curved portion formed by the plate or at least a portion of the curved portion, a vicinity of an opening formed in a body of a device provided by the plate, or at least a portion of the opening. The support may be disposed to surround at least a portion of the curved portion or the opening or may be provided to correspond to the shape of the curved portion or the opening, but the support is not excluded from being provided on other portions. The opening may be understood as a part of a device including a body and a door capable of opening and closing the opening formed in the body.

An example in which the support is provided to support the plate is as follows. First, at least a portion of the support may be provided in a space formed inside the plate. The plate may include a portion having a plurality of layers, and the support may be provided between the plurality of layers. Optionally, the support may be provided to connect with at least a portion of the plurality of layers or provided to support at least a portion of the plurality of layers. Second, at least a portion of the support may be provided to be connected to a surface formed on the outside of the plate. The support may be provided in the vacuum space part or in an external space of the vacuum space part. For example, the plate may include a plurality of layers, and the support may be provided in any one of the plurality of layers. Optionally, the support may be provided to support the other one of the plurality of layers. As another example, the plate may include a plurality of portions extending in the longitudinal direction, and the support may be provided by any one of the plurality of portions. Optionally, the support may be provided to support the other one of the plurality of parts. As another example, the support may be provided in the vacuum space part or an external space of the vacuum space part as a separate part from the plate. Optionally, the support may be provided to support at least a portion of a surface formed on the outside of the plate. Optionally, the support may be provided to support one surface of the first plate and one surface of the second plate, and one surface of the first plate and one surface of the second plate may be provided to face each other. Third, the support may be provided integrally with the plate. An example in which the support is provided to support the heat transfer resistor may be understood instead of an example in which the support is provided to support the plate. A duplicate description will be omitted.

An example in which the support is designed to reduce heat transfer through the support is as follows. First, at least a portion of the parts disposed in the vicinity of the support may be provided so as not to come into contact with the support or may be provided to be disposed in an empty space provided by the support. Examples of the component include a heat transfer resistor, exhaust port, getter port, which will be described later, a tube or component connected to the plate, a tube or component passing through the vacuum space, a tube or component at least a part of which is disposed in the vacuum space, etc. can be Examples of the aforementioned tube may be ports such as exhaust ports or getter ports. Examples of the empty space may be an empty space provided inside the support, an empty space provided between a plurality of supports, and an empty space provided between a support and a separate component separated from the support. Optionally, at least a portion of the component may be disposed in a through hole formed in the support, disposed between a plurality of bars, disposed between a plurality of connecting plates, or disposed between a plurality of support plates. Optionally, at least a portion of the component may be disposed in a space spaced apart between the plurality of bars, in a space spaced apart between the plurality of connection plates, or in a space spaced apart between the plurality of support plates. Second, insulation may be provided on at least a portion of the support or in the vicinity of at least a portion of the support. The insulating material may be provided to be in contact with the support or provided not to be in contact with the support. The heat insulating material may be provided at a portion in which the support and the plate are in contact. The heat insulating material may be provided on at least a portion of one surface and the other surface of the support, or may be provided to cover at least a portion of one surface and the other surface of the support. The insulating material may be provided on at least a portion of the vicinity of one surface of the support and the vicinity of the other surface of the support, or may be provided to cover at least a portion of the vicinity of one surface of the support and the vicinity of the other surface of the support. The support may include a plurality of bars, and an insulating material may be disposed in a region from a point where any one of the plurality of bars is located to a midpoint between the one bar and surrounding bars. Third, when cold air is transmitted through the support, a heat source may be disposed at a location where the heat insulator described in the second example is disposed. When the temperature of the first space is lower than the temperature of the second space, the heat source may be disposed on the second plate or in the vicinity of the second plate. When heat is transmitted through the support, a cold source may be disposed at a location where the heat insulator described in the second example is disposed. When the temperature of the first space is higher than the temperature of the second space, the cooling source may be disposed on the second plate or in the vicinity of the second plate. As a fourth example, the support may include a portion having a higher heat transfer resistance than a metal or a higher heat transfer resistance than the plate. The support may include a portion having a lower heat transfer resistance than an additional adiabatic body. The support may include at least one of a non-metal material, PPS and glass fiber (GF), low outgassing PC, PPS, and LCP. The reason is that it is possible to obtain high compressive strength, low outgassing and water absorption rates, low thermal conductivity, high compressive strength at high temperatures, and excellent workability.

Examples of the support may be the bars 30 and 31 , the connection plate 35 , the support plate 35 , the porous material 33 , and the filler 33 . In the present invention, the support may include any one of the above examples, or an example in which at least two are combined. As a first example, the support may include bars 30 and 31 that extend in a direction connecting the first plate and the second plate in order to support a gap between the first plate and the second plate. It may contain parts. The bar may include a portion extending in the height direction of the vacuum space portion or may include a portion extending in a direction substantially perpendicular to the direction in which the plate extends. The bar may be provided to support only one of the first plate and the second plate, or the bar may be provided to support both the first plate and the second plate. For example, one surface of the bar may be provided to support a portion of the plate, and the other surface of the bar may be provided so as not to contact another portion of the plate. As another example, one surface of the bar may be provided to support at least a portion of the plate, and the other surface of the bar may be provided to support another portion of the plate. The support includes a bar provided with an empty space therein, the support includes a plurality of bars and an empty space is provided between the plurality of bars, or the support includes a bar and the bar is provided separately from the bars It may be arranged to provide an empty space between the separate parts. The support may optionally include a connecting plate 35 including a portion connected to the bar or a portion connecting a plurality of bars. The connecting plate may include a portion extending in the longitudinal direction of the vacuum space portion or may include a portion extending along the extending direction of the plate. An XZ-plane cross-sectional area of the connecting plate may be greater than an XZ-plane cross-sectional area of the bar. The connecting plate may be provided on at least one of one surface and the other surface of the bar, or may be provided between the one surface and the other surface of the bar. At least one of one surface and the other surface of the bar may be a surface on which the bar supports the plate. The shape of the connecting plate is not limited. The support includes a connection plate provided with an empty space therein, the support includes a plurality of connection plates and an empty space is provided between the plurality of connection plates, or the support includes a connection plate and the connection The plate may be arranged to provide an empty space between the connection plate and a separate component provided separately. As a second example, the support may include a support plate 35 . The support plate may include a portion extending in a longitudinal direction of the vacuum space portion or may include a portion extending along a direction in which the plate extends. The support plate may be provided to support only one of the first plate and the second plate, or the support plate may be provided to support both the first plate and the second plate. For example, one surface of the support plate may be provided to support a portion of the plate, and the other surface of the support plate may be provided so as not to contact another portion of the plate. As another example, one surface of the support plate may be provided to support at least a portion of the plate, and the other surface of the support plate may be provided to support another portion of the plate. The cross-sectional shape of the support plate is not limited. The support includes a support plate provided with an empty space therein, the support includes a plurality of support plates and an empty space is provided between the plurality of support plates, or the support includes a support plate and the support The plate may be arranged to provide an empty space between the support plate and a separate component provided separately. As a third example, the support may include a porous material 33 or a filler 33 . The inside of the vacuum space may be supported by a porous material or a filler. The inside of the vacuum space part may be completely filled by the porous material or the filler. The support may include a plurality of porous materials or a plurality of fillers, and the plurality of porous materials or a plurality of fillers may be disposed to contact each other. When an empty space is provided inside the porous material, an empty space is provided between a plurality of porous materials, or an empty space is provided between the porous material and a separate component distinct from the porous material, the porous material As described above, it may be understood as any one of a connection plate and a support plate. When an empty space is provided inside the filler, an empty space is provided between a plurality of fillers, or an empty space is provided between the filler and a separate component distinct from the filler, the filler is as described above, It may be understood as any one of a connection plate and a support plate. The support of the present invention may include any one of the above examples or an example in which two or more are combined.

Referring to FIG. 3A , as an embodiment, the support may include a bar 31 and a connecting plate and a supporting plate 35 . The connection plate and the support plate may be designed separately. Referring to FIG. 3B , as an embodiment, the support may include a bar 31 , a connecting plate/support plate 35 , and a porous material 33 filled in the vacuum space. The porous material 33 may have a higher emissivity than stainless steel, which is a material of the plate, but since the vacuum space is filled, the resistance efficiency of radiant heat transfer is high. The porous material may also function as a heat transfer resistor to be described later. More preferably, the porous material may perform the function of a radiation resistance sheet to be described later. Referring to FIG. 3C , as an embodiment, the support may include a porous material 33 or a filler 33 . The porous material 33 may be provided in a compressed state so that the filler can maintain the gap between the vacuum space portions. The film 34 may be provided in a state in which a hole is punched as an exemplary PE material. The porous material 33 or the filler may perform both a function of a heat transfer resistor and a function of the support, which will be described later. More preferably, the porous material may perform the function of the radiation resistance sheet to be described later and the function of the support.

4 is a view for explaining an embodiment of the vacuum insulator centering on the heat transfer resistors (32, 33, 60, 63, thermal insulator, heat transfer resistance body). The vacuum insulator of the present invention may optionally include a heat transfer resistor. Examples of the heat transfer resistor are as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

The heat transfer resistors 32, 33, 60 and 63 may be an object that reduces the amount of heat transfer between the first space and the second space or an object that reduces the amount of heat transfer between the first plate and the second plate. can The heat transfer resistor is disposed on a heat transfer path formed between the first space and the second space or on a heat transfer path formed between the first plate and the second plate. can be placed. The heat transfer resistor may include a portion extending in a direction along a wall defining the vacuum space portion, or the heat transfer resistor may include a portion extending in a direction in which the plate extends. Optionally, the heat transfer resistor may include a portion extending from the plate in a direction away from the vacuum space portion. The heat transfer resistor may be provided on at least a portion of a peripheral portion of the first plate and a peripheral portion of the second plate, or may be provided on at least a portion of an edge of the first plate and the second plate. The heat transfer resistor may be provided in a portion in which the through hole is formed or as a pipe connected to the through hole. A separate tube or a separate part to be distinguished from the tube may be disposed inside the tube. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports. The heat transfer resistor may include a portion having a higher heat transfer resistance than the plate. In this case, the thermal insulation performance of the vacuum insulator can be further improved. A shield 62 may be provided on the outside of the heat transfer resistor to be insulated. The inside of the heat transfer resistor may be insulated by a vacuum space part. The shielding part may be provided with a porous material or a filler in contact with the outside of the inside of the heat transfer resistor. The shielding part may be provided as an insulating structure exemplified by a separate gasket placed outside the inside of the heat transfer resistor. The heat transfer resistor may be a wall defining the third space.

An example in which the heat transfer resistor is connected to the plate can be understood by replacing the support with the heat transfer resistor in the example in which the support is provided to support the plate. A duplicate description will be omitted. An example in which the heat transfer resistor is connected to the support can be understood by replacing the plate with the support in the example in which the heat transfer resistor is connected to the plate. A duplicate description will be omitted. The example of reducing heat transfer via the heat transfer body may be applied instead of the example of reducing heat transfer via the support, and the same description will be omitted.

In the present invention, the heat transfer resistor may be any one of a radiation resistance sheet 32 , a porous material 33 , a filler 33 , and a conductive resistance sheet. In the present invention, the heat transfer resistor may include a mixture of at least two of a radiation resistance sheet 32 , a porous material 33 , a filler 33 , and a conductive resistance sheet. As a first example, the heat transfer resistor may include a radiation resistance sheet (32). The radiation resistance sheet may include a portion having a greater heat transfer resistance than the plate, and the heat transfer resistance may be a degree of resistance to heat transfer by radiation. The support may perform the function of the radiation resistance sheet together. A conductive resistance sheet to be described later may perform the function of the radiation resistance sheet together. As a second example, the heat transfer resistor may include conduction resistance sheets 60 and 63 . The conductive resistance sheet may include a portion having a higher heat transfer resistance than the plate, and the heat transfer resistance may be a degree of resistance to heat transfer by conduction. For example, the conductive resistance sheet may have a thickness smaller than at least a portion of the plate. As another example, the conductive resistance sheet may include one end and the other end, and the length of the conductive resistance sheet may be longer than a straight line distance connecting one end of the conductive resistance sheet and the other end of the conductive resistance sheet. As another example, the conductive resistance sheet may include a material having a higher resistance to heat transfer by conduction than the plate. As another example, the heat transfer resistor may include a portion having a radius of curvature smaller than that of the plate.

Referring to FIG. 4A , for example, a conductive resistance sheet may be provided on a side plate connecting the first plate and the second plate. Referring to FIG. 4B , for example, a conductive resistance sheet 60 may be provided on at least a portion of the first plate and the second plate. A connection frame 70 may be further provided outside the conductive resistance sheet. The connection frame may be a portion from which the first plate or the second plate is extended, or a portion from which the side plate is extended. Optionally, the connection frame 70 may include a part to which parts disposed outside the vacuum space part are connected, such as parts for sealing the door and the body, an exhaust port required for an exhaust process, and a getter port for maintaining vacuum. can Referring to FIG. 4C , for example, a conductive resistance sheet may be provided on a side plate connecting the first plate and the second plate. The conductive resistance sheet may be installed in a through hole penetrating the vacuum space portion. The conduit 64 may be provided separately on the outside of the conductive resistance sheet. The conductive resistance sheet may be provided in a pleated shape. Through this, the heat transfer path can be lengthened, and deformation due to the pressure difference can be prevented. A separate shielding member for insulating the conductive resistance sheet 63 may also be provided. The conductive resistance sheet may include a portion having a strain resistance smaller than at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a strain resistance smaller than that of at least one of the plate and the support. The plate may include a portion having less strain resistance than the support. The conductive resistance sheet may include a portion having a conductive heat transfer resistance greater than at least one of the plate, the radiation resistance sheet, and the support. The radiation resistance sheet may include a portion having a greater radiation heat transfer resistance than at least one of the plate, the conductive resistance sheet and the support. The support may include a portion having a greater heat transfer resistance than the plate. For example, at least one of the plate, the conductive resistance sheet, and the connection frame may include stainless steel, the radiation resistance sheet may include aluminum, and the support may include a resin material.

5 is a graph for observing the process of evacuating the inside of the vacuum insulator with time and pressure when a support is used. An example of the vacuum insulator vacuum evacuation step is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

While the exhaust step is being performed, an outgassing step, which is a process in which the gas in the vacuum space is exhausted or the potential gas remaining in the parts of the vacuum insulator, is exhausted may be performed. As an example of the outgassing step, the exhausting step includes at least one of heating or drying the vacuum insulator, providing a vacuum pressure to the vacuum insulator, and providing a getter to the vacuum insulator. may include In this case, it is possible to promote the vaporization of the potential gas remaining in the parts provided in the vacuum space portion to be exhausted. The exhausting step may include cooling the vacuum insulator. The cooling step may be performed after the step of heating or drying the vacuum insulator is performed. Preferably, the step of heating or drying the vacuum insulator and the step of providing a vacuum pressure to the vacuum insulator may be performed together. Preferably, the step of heating or drying the vacuum insulator and the step of providing a getter to the vacuum insulator may be performed together. Preferably, after the step of heating or drying the vacuum insulator is performed, the step of cooling the vacuum insulator may be performed. Preferably, the step of providing a vacuum pressure to the vacuum insulator and the step of providing a getter to the vacuum insulator may be performed so as not to overlap. For example, after the step of providing a vacuum pressure to the vacuum insulator is performed, the step of providing a getter to the vacuum insulator may be performed. When a vacuum pressure is provided to the vacuum insulator, the pressure of the vacuum space portion may drop to a certain level and then no longer drop. At this time, after stopping the step of providing a vacuum pressure to the vacuum insulator, a getter may be introduced. As an example of stopping the step of providing the vacuum pressure to the vacuum insulator, the operation of the vacuum pump connected to the vacuum space part may be stopped. When the getter is added, the step of heating or drying the vacuum insulator may be performed together. Through this, outgassing can be promoted. As another example, after the step of providing the getter to the vacuum insulator is performed, the step of providing a vacuum pressure to the vacuum insulator may be performed.

The time during which the vacuum insulator vacuum evacuation step is performed may be referred to as a vacuum evacuation time. The vacuum exhaust time includes a time period during which the step of heating or drying the vacuum insulator is performed (Δt1), a time period during which the step of maintaining the getter in the vacuum insulator is performed (Δt2), and the vacuum insulation It may include at least one time among the time (Δt3) during which the step of cooling the sieve is performed. Examples of Δt1, Δt2, and Δt3 are as follows. It may be any one of the following examples of the present invention or a combination of two or more. In the step of evacuating the vacuum insulator, Δt1 may be greater than or equal to t1a and less than or equal to t1b. As a first example, the t1a may be greater than or equal to 0.2 hr and less than or equal to 0.5 hr. The t1b may be greater than or equal to 1 hr and less than or equal to 24.0 hr. Preferably, the Δt1 may be 0.3 hr or more and 12.0 hr or less. Preferably, the Δt1 may be 0.4 hr or more and 8.0 hr or less. More preferably, the Δt1 may be 0.5 hr or more and 4.0 hr or less. In this case, even if Δt1 is kept as short as possible, outgassing can be applied to a sufficient vacuum insulator. In one example, the parts of the vacuum insulator that are exposed to the vacuum space are less than any one of the parts of the vacuum insulator that are exposed to the external space of the vacuum insulator. , %) may be included. Specifically, the part exposed to the vacuum space may include a part having a lower outgassing rate than that of a thermoplastic polymer. More specifically, a support or a radiation resistance sheet may be disposed in the vacuum space portion, and the outgassing rate of the support may be lower than that of the thermoplastic plastic. As another example, a part of the vacuum insulator that is exposed to the vacuum space has a higher operating temperature than any one of the parts of the vacuum insulator that is exposed to the external space of the vacuum space. It may be a case including a part having a ° C. In this case, the vacuum insulator can be heated to a higher temperature, thereby increasing the outgassing rate. For example, the parts exposed to the vacuum space It may include a portion having a higher operating temperature than that of a thermoplastic polymer.For more specific example, a support or a radiation-resisting sheet is disposed in the vacuum space portion, and the use temperature of the support may be higher than that of the thermoplastic plastic. As another example, among the parts of the vacuum insulator, the parts exposed to the vacuum space may include more metal parts than non-metal parts, that is, the mass of the metal part is greater than the mass of the non-metal part. The volume of the metal part may be larger than the volume of the non-metal part, or the area where the metal part is exposed to the vacuum space may be larger than the area where the non-metal part is exposed to the vacuum space. When there are a plurality of parts exposed to the space, the sum of the volume of the metallic material contained in the first part and the volume of the metallic material contained in the second part is equal to the volume of the non-metal material contained in the first part and the second It may be greater than the sum of the volumes of the non-metallic materials included in the part.If there are a plurality of parts exposed to the vacuum space, the mass of the metal material included in the first part and the metal material included in the second part It may be a case in which the sum of the mass of the first part is greater than the sum of the mass of the non-metal material included in the first part and the mass of the non-metal material included in the second part. The sum of the area where the metal material included in the first part is exposed to the vacuum space part and the area where the metal material included in the second part is exposed to the vacuum space part is the sum of the area where the metal material included in the first part is exposed to the vacuum space part. Including the area exposed to the space and the second part The non-metallic material may be larger than the sum of the areas exposed to the vacuum space. As a second example, t1a may be greater than or equal to 0.5 hr and less than or equal to 1 hr. The t1b may be greater than or equal to 24.0 hr and less than or equal to 65 hr. Preferably, the Δt1 may be greater than or equal to 1.0 hr and less than or equal to 48.0 hr. Preferably, the Δt1 may be 2 hr or more and 24.0 hr or less. More preferably, the Δt1 may be 3 hr or more and 12.0 hr or less. In this case, it may be a vacuum insulator that needs to maintain Δt1 as long as possible. In this case, it may be the case opposite to the examples described in the first example, or a case where the part exposed to the vacuum space is made of a thermoplastic material. A duplicate description will be omitted. In the step of evacuating the vacuum insulator, Δt2 may be greater than or equal to t2a and less than or equal to t2b. The t2a may be greater than or equal to 0.1 hr and less than or equal to 0.3 hr. The t2b may be greater than or equal to 1 hr and less than or equal to 5.0 hr. Preferably, the Δt2 may be 0.2 hr or more and 3.0 hr or less. More preferably, the Δt2 may be 0.3 hr or more and 2.0 hr or less. More preferably, the Δt2 may be 0.5 hr or more and 1.5 hr or less. In this case, the vacuum insulator may be sufficient for outgassing through the getter even by keeping Δt2 as short as possible. In the step of evacuating the vacuum insulator, Δt3 may be greater than or equal to t3a and less than or equal to t3b. The t3a may be greater than or equal to 0.2 hr and less than or equal to 0.8 hr. The t3b may be greater than or equal to 1 hr and less than or equal to 65.0 hr. Preferably, the Δt3 may be 0.2 hr or more and 48.0 hr or less. Preferably, the Δt3 may be 0.3 hr or more and 24.0 hr or less. More preferably, the Δt3 may be 0.4 hr or more and 12.0 hr or less. More preferably, the Δt3 may be 0.5 hr or more and 5.0 hr or less. After the heating or drying step of the exhaust step is performed, the cooling step may be performed. For example, when the heating or drying step is performed for a long time, Δt3 may be long. The vacuum insulator of the present invention may be manufactured such that Δt1 is greater than Δt2, Δt1 is less than or equal to Δt3, or Δt3 is greater than Δt2. Preferably, Δt2<Δt1≤Δt3. The vacuum insulator of the present invention has Δt1+Δt2+Δt3 greater than or equal to 0.3 hr, less than or equal to 70 hr, greater than or equal to 1 hr, less than or equal to 65 hr, greater than or equal to 2 hr, or same, and may be manufactured to be less than or equal to 24hr. More preferably, Δt1+Δt2+Δt3 may be manufactured to be greater than or equal to 3 hr and less than or equal to 6 hr.

An example of the vacuum pressure condition during the exhaust step is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined. The minimum value of the vacuum pressure in the vacuum space during the exhaust step may be greater than 1.8E-6 Torr. Preferably, the lowest value of the vacuum pressure is greater than 1.8E-6 Torr, less than or equal to 1.0E-4 Torr, greater than 0.5E-6 Torr, less than or equal to 1.0E-4 Torr, or 0.5E- greater than 6 Torr, and may be less than or equal to 0.5E-5 Torr. More preferably, the minimum value of the vacuum pressure may be greater than 0.5E-6 Torr and less than 1.0E-5 Torr. As described above, the reason for limiting the minimum value of the vacuum pressure provided during the exhausting step is that even when the pressure is reduced with a vacuum pump during the exhausting step, the degree of the vacuum pressure dropping below a certain level is slowed down. As an embodiment, after the evacuation step is performed, the vacuum pressure of the vacuum space may be maintained at a pressure greater than or equal to 1.0E-5 Torr and less than or equal to 5.0E-1 Torr. The vacuum pressure maintained is greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-1 Torr, greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-2 Torr, or 1.0E greater than or equal to -4 Torr, less than or equal to 1.0E-2 Torr, greater than or equal to 1.0E-5 Torr, less than or equal to 1.0E-3 Torr, greater than or equal to 1.0E-4 Torr; The pressure may be less than or equal to 1.0E-3 Torr. As a result of predicting the change of the vacuum pressure in the vacuum insulator of the example, it was confirmed that the vacuum pressure was maintained below 1.0E-04Torr even after 16.3 years, and the other was 17.8 years. It was confirmed that the vacuum pressure was maintained at 1.0E-04Torr or less even in Yiru. As such, the vacuum pressure of the vacuum insulator must be maintained at a predetermined level or less, even if there is a change over time, to be used industrially.

5A is a graph of the elapsed time and pressure of an exhaust process according to an example, and FIG. 5B is an accelerated experiment of a vacuum insulator of a refrigerator having an internal volume of 128 liters to explain the results of a long-term vacuum maintenance experiment. Referring to FIG. 5B , it can be seen that the vacuum pressure is gradually increased according to the aging. For example, it was confirmed that 6.7E-04 Torr after 4.7 years, 1.7E-03 Torr after 10 years, and 1.0E-02 Torr after 59 years. According to these experimental results, it can be confirmed that the vacuum insulator according to the embodiment is sufficiently industrially applicable.

6 is a graph comparing vacuum pressure and gas conductivity. Referring to FIG. 6 , the actual heat transfer coefficient (eK) of gas conductivity according to vacuum pressure according to the size of the gap inside the vacuum space part 50 is shown as a graph. The gap of the vacuum space part was measured in three cases of 3 mm, 4.5 mm, and 9 mm. The gap of the vacuum space is defined as follows. When the radiation resistance sheet 32 is located inside the vacuum space, it is a distance between the radiation resistance sheet and an adjacent plate, and when there is no radiation resistance sheet inside the vacuum space, the first plate and the second plate is the distance between the plates. It can be seen that the point corresponding to the conventional real heat transfer coefficient 0.0196 W/mk for providing an insulating material by foaming polyurethane is 5.0E-1 Torr even when the size of the gap is 3 mm because the size of the gap is small. On the other hand, even if the vacuum pressure is lowered, it was confirmed that the point at which the reduction effect of the insulation effect due to the gas conduction heat is saturated is approximately 4.5E-3Torr. The pressure of 4.5E-3Torr can be determined as the point at which the reduction effect of gas conduction heat is saturated. In addition, when the real heat transfer coefficient is 0.01W/mk, it is 1.2E-2Torr. An example of the range of vacuum pressure in the vacuum space according to the gap is as follows. The support includes at least one of a bar, a connecting plate, and a support plate, and when the gap of the vacuum space is greater than or equal to 3 mm, the vacuum pressure is greater than or equal to A and less than 5E-1 Torr, or 2.65E It may be greater than -1 Torr and less than 5E-1 Torr. As another example, the support includes at least one of a bar, a connecting plate, and a support plate, and when the gap of the vacuum space is greater than or equal to 4.5 mm, the vacuum pressure is greater than or equal to A and less than 3E-1 Torr or greater than 1.2E-2 Torr and less than 5E-1 Torr. As another example, when the support includes at least one of a bar, a connecting plate, and a support plate, and the gap of the vacuum space is greater than or equal to 9 mm, the vacuum pressure is greater than or equal to A and 1.0×10^-1 It may be less than Torr, greater than 4.5E-3 Torr, and less than 5E-1 Torr, where A may be greater than or equal to 1.0×10^-6 Torr and less than or equal to 1.0E-5 Torr. Preferably, A may be greater than or equal to 1.0×10^-5 Torr and less than or equal to 1.0E-4 Torr. When the support includes a porous material or a filler, the vacuum pressure may be greater than or equal to 4.7E-2 Torr and less than or equal to 5E-1 Torr. In this case, it may be understood that the size of the gap ranges from several micrometers to several hundreds of micrometers. When the support and the porous material are provided together in the vacuum space part, a vacuum pressure intermediate between the case of using only the support and the case of using only the porous material may be used.

7 is a view showing various embodiments of the vacuum space unit. The present invention may be any one of the following examples, or an example in which two or more are combined.

Referring to FIG. 7 , the vacuum insulator of the present invention may include a vacuum space part. The vacuum space part 50 may include a first vacuum space part extending in a first direction (eg, X-axis) and having a predetermined height. The vacuum space part 50 may selectively include a second vacuum space part (hereinafter, vacuum space expansion part) different from the first vacuum space part in at least one of a height and a direction. The vacuum space extension portion may be provided by extending at least one of the first and second plates and the side plate. In this case, the heat transfer resistance can be increased by lengthening the heat conduction path along the plate. The vacuum space extension in which the second plate extends may reinforce the thermal insulation performance of a front portion of the vacuum insulator, and the vacuum space extension in which the first plate extends may be a rear portion of the vacuum insulator. It is possible to reinforce the thermal insulation performance of the side plate, the extended vacuum space extension portion can reinforce the thermal insulation performance of the side portion (side portion) of the vacuum insulator. Referring to FIG. 7A , the second plate may extend to provide the vacuum space extension part 51 . The second plate may include the vacuum space portion 50 and the second portion 202 extending from the first portion 201 forming the vacuum space extension portion 51 . The second portion 202 of the second plate may branch a heat conduction path along the second plate, thereby increasing heat transfer resistance. Referring to FIG. 7B , the side plate may extend to provide the vacuum space extension part. The side plate may include the vacuum space part 50 and the second part 152 extending from the first part 151 forming the vacuum space extension part 51 . The second portion of the side plate may branch a heat conduction path along the side plate, thereby improving thermal insulation performance. all. The first and second portions 151 and 152 of the side plate may branch a heat conduction path to increase heat transfer resistance. Referring to FIG. 7C , the first plate may extend to provide the vacuum space extension part. The first plate may include a second portion 102 extending from the first portion 101 forming the vacuum space portion 50 and the vacuum space extension portion 51 . The second part may branch the heat conduction path along the second plate, thereby increasing the heat transfer resistance. Referring to FIG. 7D , the vacuum space extension part 51 may include an X-direction extension part 51a and a Y-direction extension part 51b of the vacuum space part. The vacuum space extension part 51 may extend in a plurality of directions of the vacuum space part 50 . Through this, it is possible to reinforce the thermal insulation performance in a plurality of directions, and by lengthening the heat conduction path in a plurality of directions, it is possible to increase the heat transfer resistance. The vacuum space expansion unit extending in the plurality of directions may further improve thermal insulation performance by branching the heat conduction path. Referring to FIG. 7E , the side plate may provide the vacuum space extension unit extending in a plurality of directions. The vacuum space expansion part may reinforce the insulating performance of the side part of the vacuum insulator. Referring to FIG. 7F , the first plate may provide the vacuum space extension unit extending in a plurality of directions. The vacuum space expansion part may reinforce the insulating performance of the side part of the vacuum insulator.

8 is a view for explaining an additional insulator. The present invention may be any one of the examples below or an example in which two or more are combined. Referring to FIG. 8 , the vacuum insulator of the present invention may optionally include an additional heat insulator 90 . The additional insulator may be an object having a lower degree of vacuum than the vacuum insulator or may be an object that does not include a part in a vacuum state therein. The vacuum insulator and the additional vacuum insulator may be directly connected or connected through a medium . In this case, the medium may be an object having a lower degree of vacuum than at least one of the vacuum insulator and the additional insulator, or an object that does not include a part in a vacuum state therein. When the vacuum insulator includes a portion in which the height of the vacuum insulator is high and a portion in which the height of the vacuum insulator is low, the additional insulator may be disposed in a portion in which the height of the vacuum insulator is low. The additional insulator may include a portion connected to at least a portion of the first and second plates and the side plate. The additional thermal insulator may be supported on the plate, coupled or sealed. A degree of sealing between the additional insulator and the plate may be lower than a degree of sealing between the plates. The additional heat insulator may include a cured heat insulator (eg, PU foam) that is cured after being injected, a pre-molded resin, a peripheral heat insulator, and a side panel. At least a portion of the plate may be provided to be located inside the additional insulator. The additional insulator may include an empty space. The plate may be provided to be accommodated in the empty space. At least a portion of the plate may be provided to cover at least a portion of the additional heat insulator. The additional insulator may include a member covering the outer surface thereof. The member may be at least a part of the plate. The additional insulator may be a medium for connecting, supporting, bonding, or sealing the vacuum insulator and the component. The additional insulator may be a medium for connecting, supporting, bonding, or sealing the vacuum insulator to another vacuum insulator. The additional heat insulator may include a portion connected to a fastening part provided on at least a portion of the plate. The additional insulator may include a portion connected to a cover covering the additional insulator. The cover may be disposed between the first plate and the first space, between the second plate and the second space, or between the side plate and a space other than the vacuum space part 50 . can For example, the cover may include a part on which the component is mounted. As another example, the cover may include a portion that forms an external appearance of the additional heat insulator. Referring to FIGS. 8A to 8F , the additional thermal insulator may include a peripheral thermal insulator. The peripheral insulator may be disposed on at least a portion of a periphery of the vacuum insulator, a periphery of the first plate, a periphery of the second plate, and the side plate. The peripheral insulator disposed on the periphery of the first plate or the second plate may extend to the portion where the side plate is formed or to the outside of the side plate. The peripheral insulator disposed on the side plate may extend to a portion where the first plate or the second plate is formed, or may extend to an outer side of the first plate or the second plate. 8G to 8H , the additional insulator may include a central thermal insulator. The central thermal insulator includes at least a portion of a central portion of the vacuum insulator, a central portion of the first plate, and a central portion of the second plate. can be placed in

Referring to FIG. 8A , the perimeter insulation 92 may be placed on the periphery of the first plate. The perimeter insulation may contact the first plate. The peripheral insulator may be separated from the first plate or may extend further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance of the peripheral portion of the first plate. Referring to FIG. 8B , the perimeter insulation may be disposed on the periphery of the second plate. The perimeter insulation may contact the second plate. The peripheral insulator may be separated from the second plate or may extend further (indicated by a dotted line). The peripheral insulation may improve the thermal insulation performance of the peripheral portion of the second plate. Referring to FIG. 8C , the perimeter insulation may be disposed on the periphery of the side plate. The perimeter insulation may contact the side plate. The peripheral insulation may be separated from the side plate or may extend further. The peripheral portion insulator may improve the thermal insulation performance of the peripheral portion of the side plate. Referring to FIG. 8D , the peripheral insulation 92 may be placed on the peripheral portion of the first plate. The peripheral insulator may be placed on the periphery of the first plate constituting the vacuum space expansion part 51 . The peripheral insulator may be in contact with the first plate formed by the vacuum space extension. The peripheral insulator may be separated from the first plate constituting the vacuum space extension or may further extend. The peripheral part insulator may improve the thermal insulation performance of the peripheral part of the first plate constituting the vacuum space expansion part. Referring to FIGS. 8E and 8F , in the peripheral insulator, the vacuum space extension may be disposed on a peripheral portion of the second plate or the side plate. The same explanation as in FIG. 8D may be applied. Referring to FIG. 8G , the central insulator 91 may be placed in the central portion of the first plate. The central part insulator may improve the thermal insulation performance of the central part of the first plate. Referring to FIG. 8H , the central insulator may be disposed on the central portion of the second plate. The central part insulator may improve the thermal insulation performance of the central part of the second plate.

9 is a view for explaining a heat transfer path between first and second plates having different temperatures. An example of the heat transfer path is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

The heat transfer path may pass through a portion extending from at least a portion of the first portion 101 of the first plate, the first portion 201 of the second plate, and the first portion 151 of the side plate. there is. The first part may include a part forming the vacuum space part. The extended portions 102 , 152 , and 202 may include portions extending in a direction away from the first portion. The extended portion may include a side portion of the vacuum insulator or a portion extending toward a side portion of a plate having a higher temperature among the first and second plates or a side portion of the vacuum space portion 50 . . The extended portion is a portion extending in a direction away from the front portion of the vacuum insulator or the front portion of the plate having a higher temperature among the first and second plates or the front portion of the vacuum space portion 50 . may include Through this, it is possible to reduce the generation of dew on the front part. The vacuum insulator or the vacuum space unit 50 may include first and second surfaces having different temperatures from each other. The temperature of the first surface may be lower than that of the second surface. For example, the first surface may be the first plate, and the second surface may be the second plate. The extended portion may include a portion extending in a direction away from the second surface or extending toward the first surface. The extended portion may include a portion in contact with the second surface or a portion extending in contact with the second surface. The extended portion may include a portion extending apart from the two surfaces. The extended portion may include a portion having greater heat transfer resistance than at least a portion of the plate or greater than that of the first surface. The extended portion may include a plurality of portions extending in different directions. For example, the extended portion may include a second portion 202 of the second plate and a third portion 203 of the second plate. A third portion may also be provided on the first plate or the side plate. Through this, it is possible to increase the heat transfer resistance by lengthening the heat transfer path. In the extended portion, the above-described heat transfer resistor may be disposed. An additional thermal insulator may be disposed outside the extended portion. Through this, the extended portion can reduce the occurrence of dew on the second surface. Referring to FIG. 9A , the second plate may include the extended portion extending to the periphery of the second plate. Here, the extended portion may further include extending rearward. Referring to FIG. 9B , the side plate may include the extended portion extending to a peripheral portion of the side plate. Here, the extended portion may be provided to be shorter or the same length than the extended portion of the second plate. Here, the extended portion may further include a rearwardly extending portion. Referring to FIG. 9C , the first plate may include the extended portion extending to the periphery of the first plate. Here, the extended portion may be shorter or extend the same length as the extended portion of the second plate. Here, the extended portion may further include a rearwardly extending portion.

10 is a view for explaining a branch on a heat transfer path between first and second plates having different temperatures. An example of the branching portion is as follows. The present invention may be any one of the following examples, or an example in which two or more are combined.

Optionally, the heat transfer path may pass through portions 205 , 153 , and 104 branching from at least some of the first plate, the second plate, and the side plate. Here, the branched heat transfer path means a heat transfer path that flows separately from the heat transfer path flowing along the plate and in a different direction. The branched portion may be formed in a direction away from the vacuum space portion 50 . The branched portion may be formed in a direction toward the inside of the vacuum space 50 . The branched part may perform the same function as the extended part described with reference to FIG. 9 , so a description of the same part will be omitted. Referring to FIG. 10A , the second plate may include the branched portion 205 . A plurality of the branched portions may be provided to be spaced apart from each other. The branched portion may include a third portion 203 of the second plate. Referring to FIG. 10B , the side plate may include the branched portion 153 . The branched portion 153 may branch from the second portion 152 of the side plate. At least two of the branched portions 153 may be provided. At least two branched portions 153 spaced apart from each other may be provided in the second portion 152 of the side plate. Referring to FIG. 10C , the first plate may include the branched portion 104 . The branched portion may further extend from the second portion 102 of the first plate. The branched portion may extend toward the periphery. The branched portion 104 may be bent to further extend. A direction in which the branched portion extends in FIGS. 10A, B, and C may be the same as at least one of the extending directions of the extended portion described in FIG. 10 .

11 is a view for explaining a manufacturing process of the vacuum insulator.

Optionally, the vacuum insulator may be manufactured by a vacuum insulator component preparation step in which the first plate and the second plate are prepared in advance. Optionally, the vacuum insulator may be manufactured by a vacuum insulator component assembly step in which the first plate and the second plate are assembled. Optionally, the vacuum insulator may be manufactured by evacuating a vacuum insulator in which the gas in the space formed between the first plate and the second plate is discharged. Optionally, after the vacuum insulator component preparation step is performed, the vacuum insulator component assembly step may be performed or the vacuum insulator evacuation step may be performed. Optionally, after the vacuum insulator component assembly step is performed, the vacuum insulator vacuum evacuation step may be performed. Optionally, the vacuum insulator may be manufactured by the vacuum insulator component sealing step (S3) in which the space between the first plate and the second plate is sealed. The vacuum insulator component sealing step may be performed before the vacuum insulator vacuum evacuation step (S4). The vacuum insulator may be manufactured as an object having a predetermined purpose by the device assembling step (S5) in which the vacuum insulator is combined with the components constituting the device. The device assembling step may be performed after the vacuum insulator evacuation step. Here, the components constituting the device mean the components constituting the device together with the vacuum insulator.

The vacuum insulator component preparation step (S1) is a step in which parts constituting the vacuum insulator are prepared or manufactured. Examples of the parts constituting the vacuum insulator may include various parts such as a plate, a support, a heat transfer resistor, and a tube. The vacuum insulator component assembly step (S2) is a step in which the prepared components are assembled. The vacuum insulator component assembling step may include disposing at least a portion of the support and the heat transfer resistor on at least a portion of the plate. For example, the step of assembling the vacuum insulator component may include disposing at least a portion of the support and the heat transfer resistor between the first plate and the second plate. Optionally, the step of assembling the vacuum insulator component may include disposing a penetrating component on at least a portion of the plate. For example, the step of assembling the vacuum insulator component may include disposing a penetrating component or a surface component between the first and second plates. After the penetrating part is disposed between the first plate and the second plate, the penetrating part may be connected or sealed to the penetrating part fastening portion.

An example of the vacuum insulator vacuum evacuation step is as follows. The present invention may be any one of the following examples or an example in which two or more are combined. The vacuum insulator evacuation step may include at least one of a step in which the vacuum insulator is put into the exhaust passage, a getter activation step, a vacuum leak check step, and an exhaust port closing step. The step of forming the fastening part may be performed in at least one of the vacuum insulator component preparation step, the vacuum insulator component assembly step, and the device assembly step. Before the vacuum insulator evacuation step is performed, a step of washing parts constituting the vacuum insulator may be performed. Optionally, the washing step may include applying ultrasonic waves to the parts constituting the vacuum insulator or providing ethanol or a material containing ethanol to the surface of the parts constituting the vacuum insulator. can The ultrasonic wave may have an intensity between 10 kHz and 50 kHz. The content of ethanol in the material may be 50% or more. For example, the content of ethanol in the material may be 50% to 90% or less. As another example, the content of ethanol in the material may be 60% to 80% or less. As another example, the content of ethanol in the material may be 65% to 75% or less. Optionally, after the washing step is performed, a step of drying the parts constituting the vacuum insulator may be performed. Optionally, after the washing step is performed, a step of heating the components constituting the vacuum insulator may be performed.

By way of example, examples of processes with respect to supports are as follows. The present invention may be any one of the following examples or a combination of two or more. The vacuum insulator component preparation step may include the step of manufacturing the support. Before the vacuum insulator evacuation step is performed, the step of manufacturing the support may be performed. For example, the support may be manufactured by injection. Optionally, before the vacuum insulator evacuation step is performed, a step of washing the support may be performed. Before the vacuum insulator evacuation step is performed or while the vacuum insulator evacuation step is performed, the step of storing the support under a predetermined condition may be performed. For example, before the vacuum insulator evacuation step is performed, the primary storage step may be performed, and the secondary storage step may be performed while the vacuum insulator evacuation step is performed. As another example, the storage step may be performed while the vacuum insulator evacuation step is performed. An example of the storage step is as follows. As a first example, the storage step may include drying or heating the support. Through this, outgassing can be performed on the support. The heating temperature may be higher than a predetermined reference temperature and lower than the melting point of the support. The predetermined reference temperature may be a temperature between 10 degrees and 40 degrees. The heating temperature may be higher than 80 degrees and lower than 280 degrees. The heating temperature may be higher than 100 degrees and lower than 260 degrees. The heating temperature may be higher than 120 degrees and lower than 240 degrees. The heating temperature may be higher than 140 degrees and lower than 220 degrees. The heating temperature may be higher than 160 degrees and lower than 200 degrees. The heating temperature may be higher than 170 degrees and lower than 190 degrees. The heating temperature in the primary storage step may be lower than the heating temperature in the secondary storage step. Optionally, the storage step may include cooling the support. After the step of drying or heating the support is performed, the step of cooling the support may be performed. As a second example, the storage step may include the step of storing the support in a state lower than atmospheric pressure. Through this, outgassing can be performed on the support. The stored pressure may be lower than the pressure in a vacuum state in which the internal space between the first plate and the second plate is maintained. The stored pressure may be higher than 10E-10 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-9 torr and lower than atmospheric pressure. The storage pressure may be higher than 10E-8 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-7 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-3 torr and lower than atmospheric pressure. The stored pressure may be higher than 10E-2 torr and lower than atmospheric pressure. The stored pressure may be higher than 0.5E-1 torr and lower than atmospheric pressure. The stored pressure may be higher than 0.5E-1 torr and lower than 3E-1 torr. The storage pressure in the primary storage step may be higher than the storage pressure in the secondary storage step. Optionally, the storage step may include the step of storage under the atmospheric pressure. After the step of storing the support in a state lower than atmospheric pressure is performed, the step of storing the support in a state of the atmospheric pressure may be performed.

Optionally, before the vacuum insulator evacuation step is performed, a step of coupling a plurality of parts of the support to each other may be performed. As an example, the coupling step may include coupling the support bar and the connecting plate. As another example, the coupling step may include coupling the support bar and the support plate.

In relation to the support, the process may optionally include a process related to the step in which the support is stored under a predetermined condition. An example of a process sequence related to the step in which the support is stored under a predetermined condition is as follows. The present invention may be any one of the following examples, or a combination of two or more. After the step of drying or heating the support is performed, at least one of the step of storing the support at a state lower than atmospheric pressure, the step of cooling the support, and the step of storing the support at a state of atmospheric pressure can be performed there is. After the step of storing the support in a state lower than atmospheric pressure is performed, at least one of drying or heating the support, cooling the support, and storing the support at atmospheric pressure may be performed there is. The step of drying or heating the support and the step of storing the support under a condition lower than atmospheric pressure may be performed simultaneously. The step of drying or heating the support and the step of storing the support under atmospheric pressure may be performed simultaneously. The step of storing the support under a condition lower than atmospheric pressure and the step of cooling the support may be performed at the same time.

The process with respect to the support may optionally include a process related to the step of bonding the support. An example of a process sequence related to the step in which the support is coupled is as follows. The present invention may be any one of the following examples, or a combination of two or more. Before the coupling step is performed, a step of providing a separate part separated from the support in a space provided inside the support may be performed. For example, the component may include a heat transfer resistor. After the bonding step is performed, the support may be packaged or stored in a vacuum state. After the step of storing the support under a predetermined condition is performed, a step of coupling a plurality of parts of the support to each other may be performed.

In relation to the support, the process may optionally include a process related to the step of washing the support. An example of a process sequence related to the step of washing the support is as follows. The present invention may be any one of the following examples, or a combination of two or more. After the step of manufacturing the support is performed, at least one of a step of washing the support, a step of storing the support under a predetermined condition, and a step of coupling a plurality of parts of the support to each other may be performed. After the step of washing the support is performed, at least one of a step of storing the support under a predetermined condition and a step of coupling a plurality of parts of the support to each other may be performed. Before the step of washing the support is performed, at least one of a step of storing the support under a predetermined condition and a step of coupling a plurality of parts of the support to each other may be performed.

The process with respect to the support may optionally include a process related to the step of providing the support to the plate. An example of a process sequence related to the step of providing the support to the plate is as follows. The present invention may be any one of the following examples, or a combination of two or more. Before the vacuum insulator evacuation step is performed, the support may be provided in a space between the first plate and the second plate. Before the vacuum insulator evacuation step is performed, the support may be provided on the inside of the plate or on the surface of the plate. Before the vacuum insulator evacuation step is performed, the support may be coupled to the plate. After a part of the plate is provided with the fastening part, the support may be provided in a space between the first plate and the second plate.

The contents described in FIGS. 1 to 11 may be applied to all or selectively applied to the embodiments shown in the drawings below.

12 is a perspective view and a partial cross-sectional view of a vacuum insulator. FIG. 12 (a) is a vacuum insulator with the left side downward and the right side upward, and FIG. 12 (b) is a cross-section 1-1' of v(a). It is a perspective view, and FIG. 12(c) is a cross-sectional view taken along line 1-1' of FIG. 12(a). In this figure, the foam member is shown in a removed state.

Referring to FIG. 12 , the vacuum insulator may be used for a door that opens and closes the accommodation space. The hinge may be installed on the first side of the vacuum insulator. The first side may be provided thinner than the second side in order to avoid interference when the door is opened and closed. The additional heat insulator 90 may be provided on the first side thinner than the second side. The first side and the second side may face each other. The first side may point to the A side in FIG. 12( a ), and the second side may point to the B side in FIG. 12( a ). The thickness of the sides of the C side and the D side connecting the A side and the B side may be gradually changed. Here, the C side may be the upper third side of the vacuum insulator, and the D side may be the lower fourth side of the vacuum insulator.

The description of the sides is similarly applicable to the first plate 10 , the second plate 20 , the side plate 15 , the additional insulator 90 , and the gasket 80 . For example, the first and second plates may be provided in a rectangular shape. For example, the side plate may have four sides in a quadrangle.

In one or more embodiments, the tube 40 may be provided where the vacuum space part 50 and the additional heat insulator 90 contact each other. The first end of the tube 40 may be placed on the vacuum space portion 50 , and the second end of the tube 40 may be placed on the additional heat insulator 90 . The tube 40 may protrude into the additional thermal insulator 90 . The other end of the tube 40 does not protrude into the accommodation space, so waste of the accommodation space can be prevented. The foam insulation is an insulation material that is solidified after the foaming liquid is injected into the periphery of the vacuum insulation and expands. The foaming liquid may be exemplified by polyurethane. The foam insulation may generate a high pressure during the expansion process. The foam insulation may allow the foam insulation to penetrate into a narrow space of the periphery. The tube 40 may not cross the outer boundary of the additional heat insulator 90 . The tube 40 may be embedded in the additional insulator 90 and the vacuum space 50 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the height of the tube 40 may be secured at least twice the diameter of the tube 40 . After exhaust through the pipe 40 is completed, it can be pinched off. Compression deformation may propagate during the pinch-off. It is possible to prevent the propagating deformation from deforming and breaking the coupling portion between the tube 40 and the plate. The tube 40, among the four corner portions 211 of the vacuum insulator, may be placed on a corner portion 211 opposite to the upper hinge. The tube 40 is placed on the top of the vacuum insulator to prevent damage to the tube 40 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the foaming liquid may be injected downward from the top of the vacuum insulator in order to use gravity. The vacuum insulator may first be filled with a foaming liquid in the lower portion. When the foaming liquid is filled, a phenomenon in which the foaming liquid is drawn downward in the direction of gravity may occur. The expansion force of the foaming liquid is greater in the lower part of the vacuum insulator than in the upper part. The foaming liquid placed on the lower part of the vacuum insulator has a large expansive force due to the restriction of the foaming space due to the first pressure of the foaming liquid in the upper part and the second solidified foaming liquid in the upper part. In order to reduce the influence of the expansion force of the foaming liquid on the tube 40, the tube 40 may be provided above the vacuum insulator. In order to minimize the influence of the expansion force of the foaming liquid on the tube 40, the tube 40 may be provided in the first portion 101 of the first plate on the upper side of the vacuum insulator. When flexible copper is used as the material of the tube 40 , the tube 40 may be directly deformed. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, in order to reduce the influence of the local difference in the expansion force of the foaming liquid on the tube 40, the tube 40 may be provided above the vacuum insulator. The tube 40 may be provided in the first portion 101 of the first plate on the upper side of the vacuum insulator. The tube 40 may be spaced apart from the side plate 15 of the vacuum insulator by a predetermined distance W1. Since the foaming liquid solidifies multiple times, the expansion force of the foaming liquid may be locally different. For example, the expansion force of the foam liquid on the right side of the tube 40 may be greater than the expansion force of the foam liquid on the left side of the tube 40 . In this case, the tube 40 may be damaged. The failure of the tube 40 may include deformation of the coupling portion between the tube 40 and the first plate 10 and expansion failure of the sealing portion of the tube 40 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the insulating thickness of the side on which the hinge is placed in the vacuum insulator may be thinner than the opposite side. Since the tube 40 is placed on the opposite side of the hinge of the vacuum insulator, it is possible to reduce insulation loss. In the vacuum insulator, the opposite side of the hinge may refer to a side opposite to the side on which the hinge is installed. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, the tube 40 may have an elongated portion protruding into the additional heat insulator 90 . The tube 40 may provide a heat conduction path of heat passing therethrough. The tube ( 40 ) provides a place in which it rests by excluding the foam that makes up the additional insulation ( 90 ). The tube 40 may cause thermal insulation loss of the vacuum insulator. In order to reduce the insulation loss due to the tube 40 , the tube 40 may be placed on the opposite side of the hinge of the vacuum insulator having a relatively thick additional insulation 90 . The tube 40 may be provided in the first portion 101 of the first plate opposite the hinge of the vacuum insulator. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

13 is a cross-sectional perspective view and a cross-sectional view illustrating a cross section of 2-2' of FIG. 12(a), (a) is a cross-sectional perspective view, (b) is a cross-sectional view.

Referring to FIG. 13 , the foaming liquid is injected through the foaming liquid injection hole 470 . The foam injection hole 470 may not be vertically aligned with the tube 40 . The tube 40 can avoid the passage of the foaming liquid. The foaming liquid injected through the foaming liquid injection port may go down to the lower end of the vacuum insulator without being caught in the tube 40 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Preferably, the distance W1 between the tube 40 and the side plate 15 is smaller than the distance W2 between the tube 40 and the upper cover 112 . The upper cover 112 may be placed on the edge of the third side. A lower cover 113 may be placed on a fourth side of the vacuum insulator facing the upper cover 112 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

14 to 16 are views related to a cross-section taken along line 3-3' of FIG. 12(a), FIG. 14 is a cross-sectional view taken along line 3-3' of FIG. 12(a), and FIG. It is an enlarged cross-sectional view, and FIG. 16 is a cross-sectional perspective view.

14 to 16 , the thickness of the vacuum insulator at the second side may be thicker than the thickness at the first side. The thickness of the additional insulator 90 at the second side may be thicker than the thickness at the first side. Here, the thickness of the vacuum insulator may mean a height between the first and second plates 10 and 20 . The height of the vacuum space part 50 at the first side and the second side side may be the same.

Optionally, the distance W3 from the third portion 203 of the second plate to the tube 40 from the second side side is the distance W2 between the tube 40 and the upper cover 112 . may be smaller than Accordingly, it is possible to further reduce the insulation loss leaking upward of the tube (40). An imaginary extension line (X direction) of the second portion 152 of the side plate from the second side may pass through the tube 40 . Accordingly, it is possible to reduce the insulation loss leaking from the tube 40 toward the second side of the vacuum insulator. A third portion 203 of the second plate may lie on edges of the first side and the second side. Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

Optionally, a flange 42 may be provided on the first plate 10 for fastening the tube 40 and the first plate 10 . The flange 42 may extend inward of the vacuum space portion 50 . In this case, it is easy to insert the tube 40 into the flange 42 . In this case, even when the first plate 10 and the second plate 20 are fastened, the pipe 40 can be easily fastened to the flange 42 . The flange 42 may extend outwardly of the vacuum space portion 50 . Interference between the flange 42 and components placed inside the vacuum space 50 can be prevented. The flange 42 may overlap the first space in the first portion 101 of the first plate. In this case, the heat insulation loss of the additional heat insulator 90 can be reduced. Here, overlapping may mean being aligned in the height direction of the vacuum space part 50 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

An embodiment according to the location and properties of the flange 42 is presented.

17 and 18 are views showing an embodiment of the flange, and present an embodiment in which the extension direction of the flange and the position of the flange are different.

17A and 17B show a case in which the flange 42 extends outwardly of the vacuum space 50 . 18 (a) (b) is a case in which the flange 42 extends inside the vacuum space (50). 17A and 18A show a case in which the flange 42 overlaps the additional heat insulator 90 in the first portion 101 of the first plate. 17(b) and 18(b) illustrate a case in which the flange 42 overlaps the first space in the first portion 101 of the first plate.

According to the first embodiment of FIG. 17( a ), it is possible to secure the accommodating space widely. It is possible to prevent the flange 42 from interfering with the support 30 and the heat transfer resistor. According to this embodiment, the support 30 and the heat transfer resistor may be installed in various ways. According to this embodiment, a plurality of the support 30 and the heat transfer resistor may be installed.

According to the second embodiment of FIG. 17( b ), it is possible to reduce the thermal insulation loss of the additional insulator 90 caused by the tube 40 . It is possible to prevent the flange 42 from interfering with the support 30 and the heat transfer resistor. According to this embodiment, the support 30 and the heat transfer resistor may be installed in various ways. According to this embodiment, a plurality of the support 30 and the heat transfer resistor may be installed. In this embodiment, a through hole 170 through which the tube passes may be provided in the inner panel 111 . The diameter of the through hole 170 of the inner panel 111 may be larger than the outer surface of the flange 42 . The flange 42 and the through hole may be spaced apart from each other. When the tube 40 is circular, the outer diameter of the tube 40 may be smaller than the inner diameter of the through hole 170 . The through hole of the inner panel 111 may be provided to be inclined or rounded to correspond to the shape of the flange 42 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

According to the third embodiment of FIG. 18( a ), it is possible to secure the accommodating space widely. The tube 40 can be conveniently inserted along the flange 42 .

According to the fourth embodiment of FIG. 18( b ), it is possible to reduce the thermal insulation loss of the additional insulator 90 caused by the tube 40 . The tube 40 can be conveniently inserted along the flange 42 . In this embodiment, the tube 40 may penetrate the first portion 101 of the first plate as a whole. In this embodiment, the tube 40 may pass through the inner panel 111 . A through hole 170 may be provided in the inner panel 111 . Examples of the aforementioned tube may be ports such as exhaust ports or getter ports.

19 is a cross-sectional view of the second side of the vacuum insulator in which the support is shown.

Referring to FIG. 19 , the vacuum insulator of the embodiment may include the first and second plates 10 and 20 , the side plate 15 , and the additional insulator 90 . The first plate 10 may have a hook portion 130 on which a predetermined article is supported. As the hook 130 , a basket hook for hanging the basket 131 may be exemplified. The basket holder may be placed on the door of the refrigerator. The basket 131 may be placed on the door of the refrigerator to accommodate items. When an article is stored in the basket 131 , the basket 131 and the basket holder may apply a load to the first plate 10 . The load may deform or break each part of the vacuum insulator.

The load includes a static load and a dynamic load. The static load may be applied to the first plate as a load of the article placed on the basket 131 . The dynamic load may apply a load to the first plate 10 as an impact when an article is placed on the basket 131 .

20 is a side view of the basket and the hook.

Referring to FIG. 20 , the basket protrusion 132 of the basket 131 may be inserted into a gap between the basket holder and the first plate 10 . Both the basket 131 and the basket holder may apply a static load or a dynamic load to the first plate 10 . The protrusion 132 of the basket 131 may be fitted between the basket hook portion and the first plate 10 in an interference fit manner. In this case, the basket protrusion 132 may directly apply a static load to the first plate 10 .

The load may include a static load due to gravity, a static load of the basket protrusion 132, and a dynamic load of the stored article.

Referring back to FIG. 19 , the load is transmitted to the support 30 via the second portion 102 of the first plate and the first portion 101 of the first plate. The support 30 may be deformed or damaged by the load. The load may be absorbed and reduced by the first plate 10 , and the first plate 10 may more smoothly absorb the load.

Hereinafter, a configuration for preventing the support 30 from being damaged by the load will be described.

The deformation prevention and damage prevention of the support 30 can be achieved by using the positional relationship between the hanging part 130 and the support 30 and the shape relationship of the support 30 corresponding to the hanging part 130 . can

First, the positional relationship between the hook part 130 and the support 30 will be described.

The bar 31 of the support 30 may not be disposed at an interval between the imaginary lines L5 and L6 extending from both ends of the hanger 130 toward the vacuum space 50 . The interval may be referred to as a hanger interval. When there are a plurality of the bars 31 , the hook 130 may be placed between any pair of adjacent bars. Through this, it is possible to prevent the load from being directly applied to the bar 31 . The load may be applied to the bar 31 after being damped by the first plate 10 . The load may be such that a load in the height direction (Y direction) of the vacuum space part 50 is not applied to the bar. Through the above action, it is possible to prevent damage to the support 30 . Damage to the bar 31 can be prevented through the above action.

The bar 31 of the support 30 may or may not be disposed at an interval at which the hook 130 is placed. The pitch of the bars 31 placed at the interval between the hooks may be provided to be smaller than that of the bars not placed at the interval between the hooks. The pitch of the bars adjacent to the spacing between the hooks may be provided to be smaller than that of the bars not adjacent to the spacing between the hooks. When the pitch of the bars is narrow, the rigidity of the support 30 may be increased, and the load supported by a single bar may be reduced. The support 30 can more firmly withstand the deformation of the bar and the breakage of the bar that may occur due to the load.

A shape relationship of the support 30 corresponding to the hook 130 will be described. The rigidity of the member is also the same below. The support plate 340 may withstand deformation and damage due to the load in an area overlapping or adjacent to the gap between the hooks. The support plate 340 may increase the deformation resistance and breakage strength of an area that overlaps or adjoins the gap between the hooks, compared to an area that does not. In order to increase the deformation resistance and breaking strength of the support plate 340 , the thickness of the support plate 340 may be locally increased.

The bar, in an area overlapping or adjacent to the gap between the hooks, can withstand deformation and damage due to the load. The bar may increase the strain resistance and breakage strength in an area overlapping or adjacent to the gap between the hooks, compared to an area not otherwise. In order to increase the deformation resistance and breaking strength of the bar, the thickness or diameter of the bar may be increased compared to other bars. A portion of the support 30 that overlaps with or is adjacent to the region of the hook 130 may have a relatively large deformation resistance of the support 30 due to the load, compared to other portions. By preventing deformation and damage of the support 30 , it is possible to prevent destruction of the vacuum space 50 . Accordingly, the reliability of the vacuum insulator is improved, and the vacuum insulator can be used for a long time.

21 is a cross-sectional view of the second side of the vacuum insulator in which the support and the heat transfer resistor are shown.

Referring to FIG. 21 , the vacuum insulator of the embodiment may include the heat transfer resistor 32 . The heat transfer resistor 32 may be a plate-shaped member. The heat transfer resistor 32 may be provided widely in the longitudinal direction of the vacuum space portion 50 . Through this, it is possible to resist the thermal radiation of the vacuum space part 50 . The wider the heat transfer resistor 32 is provided, the higher the heat radiation resistance efficiency. The wider the heat transfer resistor 32 is provided, the better the thermal insulation performance of the vacuum insulator. The heat transfer resistor 32 may be affected by the hanger 130 . When the load is transferred to the heat transfer resistor 32 , the heat transfer resistor 32 may be deformed. When the heat transfer resistor 32 is deformed, the heat transfer resistor 32 may come into contact with other members inside the vacuum space 50 to cause heat transfer. Heat transfer through the heat transfer resistor 32 may cause thermal insulation loss of the vacuum insulator. The heat transfer resistor 32 is a thin sheet, and several spaces of the heat transfer resistor 32 may be supported by the support 30 . Since the end of the radiation resistance sheet is a free end, the heat transfer resistor 32 can be easily deformed. Among the loads, a dynamic load may have a great adverse effect on the heat transfer resistor 32 . An example of the heat transfer resistor may be a radiation resistance sheet.

In order to prevent the heat transfer resistor 32 from being deformed, the heat transfer resistor 32 may not be placed in the gap between the hooks. The heat transfer resistor 32 may be provided inside the hook when viewed from the center of the vacuum insulator. The heat transfer resistor 32 may extend to a point in contact with the gap between the hooks.

22 is a cross-sectional view of the second side of the vacuum insulator, showing a body providing an accommodation space together. Here, the vacuum insulator may be a door that opens and closes the main body.

Referring to FIG. 22 , in the embodiment, the body may have various thicknesses. The inner surface of the main body may have various positional relationships with respect to the vacuum insulator. For example, the extension line L3 of the inner surface of the main body may overlap the second portion 102 of the first plate (a). Here, the extension line L3 of the inner surface of the main body may extend in the height direction (Y direction) of the vacuum space portion 50 . In this case, it can be simply said that the inner surface of the main body overlaps the second part 102 of the first plate. In another case, the extension line of the inner surface of the body may lie on the outside of the second part 102 of the first plate (b) or on the inside of the second part 102 of the first plate (c) ). In the description of the embodiment, for convenience of understanding, a case where the inner surface of the main body overlaps the second part 102 of the first plate is taken as an example (a). When the door is opened and closed, a load may be transmitted to the heat transfer resistor 32 along an extension line of the inner surface of the body 2 . Among the above loads, the dynamic load may have a large influence. The dynamic load may include an impact applied to the door by the main body 2 when the door is opened and closed. The dynamic load may include a shock wave caused by a change in air flow in and out of the accommodation space generated when the door is opened and closed. The shock wave may be generated along the inner surface of the main body. The shock wave may be generated along an extension line of the inner surface of the body. An example of the heat transfer resistor may be a radiation resistance sheet.

In order to prevent the heat transfer resistor 32 from being deformed by the load, the heat transfer resistor 32 may not be placed on the extension line L3 of the inner surface of the body 2 . The heat transfer resistor 32 may be provided inside the extension line of the inner surface of the main body 2 from the central portion of the vacuum insulator. The heat transfer resistor 32 may extend to a point in contact with the extension line L3 of the inner surface of the body 2 . An example of the heat transfer resistor may be a radiation resistance sheet.

It is a figure explaining the relationship between a main body and a support. Referring to FIG. 23 , a load generated by the main body 2 may affect the support 30 . For example, a dynamic load generated when the door is opened and closed may be transmitted to the support 30 . The dynamic load may be transmitted to the support 30 along the extension line L3 of the inner surface of the main body. The dynamic load may deform or destroy the support 30 . The description of FIG. 22 related to the dynamic load may be applied to FIG. 23 .

Hereinafter, a configuration for preventing the support 30 from being damaged by a dynamic load generated during opening and closing of the door will be described. The deformation prevention and damage prevention of the support 30 can be achieved by using the positional relationship between the extension line of the inner surface of the main body and the support 30, and the shape relationship of the support 30 corresponding to the extension line of the inner surface of the main body. . First, the positional relationship between the extension line of the inner surface of the main body and the support will be described. The extension line of the inner surface of the main body may not overlap the bar 31 of the support 30 . Through this, it is possible to prevent the load from being directly applied to the bar 31 . The dynamic load may be applied to the bar 31 after being damped by the first plate 10 . The dynamic load may not be applied to the bar 31 in the height direction (Y direction) of the vacuum space portion 50 . Through the above action, it is possible to prevent damage to the support 30 . Through the above action, it is possible to prevent damage to the bar.

The pitch of the bars adjacent to the extension line of the inner surface of the main body may be provided to be smaller than that of the bars not adjacent to the extension line of the inner surface of the main body. When the pitch of the bars is narrow, the rigidity of the support 30 may be increased, and the dynamic load supported by any one bar may be reduced. It is possible to prevent deformation of the bar and damage to the bar that may occur due to the dynamic load.

The shape relationship of the support 30 corresponding to the extension line of the inner surface of the main body will be described. The rigidity of the member is also the same below. The support plate 340 may withstand deformation and damage caused by the dynamic load in a region overlapping or adjacent to the extension line of the inner surface of the main body. The support plate 340 may increase the deformation resistance and breakage strength of an area overlapping or adjacent to the extension line of the inner surface of the main body, compared to a non-extended area. In order to increase the deformation resistance and breaking strength of the support plate 340 , the thickness of the support plate 340 may be locally increased.

The bar may withstand deformation and damage due to the load in a region overlapping or adjacent to the extension line of the inner surface of the body. The bar may increase the strain resistance and breakage strength in a region overlapping or adjacent to the extension line of the inner surface of the body, as compared to a region not in it. In order to increase the deformation resistance and breaking strength of the bar, the thickness or diameter of the bar may be increased compared to other bars. A portion of the support 30 that overlaps with or is adjacent to the extension line of the inner surface of the main body may have a relatively large degree of deformation resistance of the support 30 due to the load compared to other portions. By preventing deformation and damage of the support 30 , it is possible to prevent destruction of the vacuum space 50 . Accordingly, the reliability of the vacuum insulator is improved, and the vacuum insulator can be used for a long time.

24 is a view for explaining the effect when the vacuum insulator of the embodiment is installed. Referring to FIG. 24 , the main body 2 , the inner door 38 in contact with the main body 2 , and the outer door 37 placed outside the inner door 38 are shown. The outer door 37 may include the vacuum insulator. The outer door 37, when the vacuum insulator is included (b), compared to the case in which the vacuum insulator is not included (a), the storage space of the outer door 37 can be widened. In other words, the height of W2 is greater than the height of W1.

According to the present invention, it is possible to provide a vacuum insulator that can be applied to real life.

Claims (20)

first plate;
second plate;
a sealing part sealing the first plate and the second plate to provide a vacuum space part;
a support for maintaining the vacuum space;
a part fastening part connected to at least one of the first and second plates to which parts are coupled; and
A hook portion provided on the first plate is included,
A portion of the support that overlaps or is adjacent to the region where the hook portion is placed has a relatively large degree of resistance to deformation of the support due to a load applied from the outside of the vacuum space portion, compared to other portions. The method of claim 1,
A vacuum insulator in which the bar of the support is not disposed at an interval between the virtual lines extending from both ends of the hook part toward the vacuum space part. The method of claim 1,
The support includes a plurality of bars, and the vacuum insulator is provided with a gap between the hooking parts between any pair of adjacent bars. The method of claim 1,
The support includes a plurality of bars, and the pitch of the bars placed at the interval of the hook portion is smaller than that of the bars not placed at the interval of the hook portion. The method of claim 1,
The support includes a plurality of bars, and the pitch of the bars adjacent to the spacing between the hooks is small compared to the spacing of the bars and the bars not adjacent to the hooks. The method of claim 1,
The support includes a support plate connecting at least two bars,
In the support plate, the region overlapping or adjacent to the interval of the hook portion is a vacuum insulator having greater deformation resistance and breaking strength than other regions. The method of claim 1,
The support includes a support plate connecting at least two bars,
The support plate, the region overlapping or adjacent to the interval of the hook portion, compared to other regions, a vacuum insulator providing a thicker thickness. The method of claim 1,
The support includes a plurality of bars, and the region overlapping or adjacent to the interval of the hook portion is compared to other regions, and the thickness of the bar is thicker than the other bars. The method of claim 1,
and a radiation resistance sheet provided inside the vacuum space to resist thermal radiation between plates,
In order to prevent the radiation resistance sheet from being deformed, the radiation resistance sheet is a vacuum insulator that is not placed in a gap between the hooks. The method of claim 1,
and a radiation resistance sheet provided inside the vacuum space to resist thermal radiation between plates,
The radiation resistance sheet is a vacuum insulator provided inside the gap between the hook portion in the center of the vacuum insulator. The method of claim 1,
The hook part is a vacuum insulator on which the basket is supported. a first plate member;
a second plate member;
a sealing part sealing the first plate member and the second plate member to provide a vacuum space part;
a support for maintaining the vacuum space;
a radiation resistance sheet provided inside the vacuum space to resist thermal radiation between plates; and
a body selectively adjacent to the first plate and receiving an article;
The radiation resistance sheet has no overlapping portion with the extension line of the inner surface of the main body. 13. The method of claim 12,
The radiation resistance sheet is provided inside the extension line of the inner surface of the main body from the central portion of the vacuum insulator. 13. The method of claim 12,
The radiation resistance sheet extends to a point in contact with the extension line of the inner surface of the main body. a first plate member;
a second plate member;
a sealing part sealing the first plate member and the second plate member to provide a vacuum space part;
a support for maintaining the vacuum space; and
a body selectively adjacent to the first plate and receiving an article;
A portion of the support that overlaps with or is adjacent to the extension line of the inner surface of the main body has a relatively large degree of resistance to deformation of the support due to the load compared to other portions. 16. The method of claim 15,
The refrigerator in which the bar of the support does not overlap with the extension line of the inner surface of the main body. 16. The method of claim 15,
The support includes a plurality of bars,
The pitch of the two bars adjacent to the extension line of the inner surface of the main body is smaller than that of the two bars not adjacent to the extension line of the inner surface of the main body. 16. The method of claim 15,
The support plate, the region overlapping or adjacent to the extension line of the inner surface of the body,
Refrigerator with high deformation resistance and breaking strength compared to other areas. 16. The method of claim 15,
The support includes a plurality of bars,
Among the bars, a bar placed in a region overlapping or adjacent to an extension line of the inner surface of the main body,
A refrigerator with high deformation resistance and breaking strength compared to bars placed in other areas. 20. The method according to claim 18 or 19,
A refrigerator in which the thickness of the bar or the thickness of the support plate is different.

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