KR101918863B1 - Core material of honeycomb structure and vacuum insulating panel comprising the same, manufacturing method of core material of honeycomb structure - Google Patents

Abstract

Disclosed are a reinforcement core material of a honeycomb structure, a vacuum insulating panel comprising the same, and a manufacturing method of the reinforcement core material of a honeycomb structure. The reinforcement core material arranged in a vacuum space of the vacuum insulating panel according to one embodiment of the present invention may include the honeycomb structure continuously connected with unit structures having a regular hexagonal column formed with a hollow part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb structured reinforcing core material and a vacuum insulation panel including the honeycomb structured reinforcing core material, and a method for manufacturing a honeycomb structured reinforcing core material. BACKGROUND ART < RTI ID = 0.0 >

The following embodiments relate to a reinforcing core material having a honeycomb structure, a vacuum insulation panel including the same, and a honeycomb structure reinforcing core material manufacturing method.

As the minimization of environmental costs becomes an important issue for enterprises and countries, energy efficient design for all buildings is indispensable. Currently, the requirements for energy conservation such as eco-friendly building certification and energy efficiency grade certification are strengthened in the construction of buildings.

When cooling and heating is performed inside the building, much of the energy loss is made through the exterior of the building. Therefore, the method of insulating the exterior of a building is being treated with great weight in relation to energy saving. For example, insulation of a building envelope can save more than 50% of the energy loss of a building.

Conventionally, polyurethane, styrofoam, glass fiber or the like has been used as a general material used as a thermal insulation material of a building. Then, a vacuum insulation panel (VIP) having excellent heat insulation performance has been developed. However, vacuum insulation panels with aluminum foil and vinyl sheaths are very difficult to apply to construction areas due to various problems. Vacuum insulation using metal or plastic panels was devised.

Vacuum thermal insulation panels using metal and plastic panels minimize the heat transfer through conduction and convection by forming a vacuum space between the pair of panels. However, when a vacuum space is formed between the pair of panels, the panel is pressed inward due to the atmospheric pressure, causing a problem that the vacuum part having heat insulating performance is disappeared. In order to maintain the vacuum space, Core material shall be installed. In this case, heat transfer through the core material occurs, so that there is a problem in that effective insulation is not achieved depending on the material quality or shape of the core material.

Accordingly, there is a need for a structure of a vacuum insulation panel having high durability while effectively performing heat insulation.

An object of an embodiment is to provide a honeycomb structure reinforcing core material having a high strength while minimizing thermal conduction and a vacuum insulation panel including the same.

An object of an embodiment is to provide a reinforcing core material of a honeycomb structure having a high space holding force while using a minimum amount of material and a vacuum insulating panel including the same.

 An object of the present invention is to provide a core material having a structure in which a connection part of a thin honeycomb is shifted so as not to be bridged with heat and a vacuum insulation panel including the same.

In the reinforced core material disposed in the vacuum space of the vacuum adiabatic panel according to one embodiment, the reinforcing core material may include a honeycomb structure in which unit cells in a square column shape are connected in series.

In one aspect, the reinforcing core includes a plurality of unit layers stacked to form a multi-layer structure, and each of the plurality of unit layers may have a honeycomb structure including unit structures of the same size.

On one side, the plurality of unit layers may be arranged so as to have a shape staggered with the unit structures of adjacent layers, based on a state viewed from one side.

In one side, the edge of one unit structure of the unit layer may be arranged to pass through the center of the unit structure of adjacent unit layers.

On one side, the core material may be formed of an inorganic material including glass fibers.

On one side, the core material may be formed of an organic material including PE which is easy to form.

On one side, the core may be formed of a composite material utilizing the advantages of organic and inorganic materials.

A vacuum insulated panel according to one embodiment includes a pair of panel plates having a plate shape and spaced apart to form a vacuum space for heat insulation; A sealing part interposed between the pair of panel plates so as to maintain a vacuum state of the vacuum space; And a reinforcing core member that includes a honeycomb structure in which a square columnar unit structure is continuously connected and reinforces the strength of the panel plate by being inserted into the vacuum space.

On one side, the reinforcing core may form a multi-layer structure by stacking a plurality of unit layers having a honeycomb structure of unit structures of the same size.

On one side, one edge of the unit structure of the unit layer may be arranged to pass through the center of the adjacent unit structure of the unit layer, based on the state viewed from the panel plate.

According to an embodiment of the present invention, there is provided a method of manufacturing a reinforced core inserted into a vacuum space in a vacuum insulated panel, the method including: providing a mold including a honeycomb structure in which square columns are continuously arranged; Injecting an expanding clay containing an inorganic material into the mold; Heating the mold to which the expanded clay is injected at a temperature of 900 to 1200 degrees and extracting the unit reinforcing core material from the mold; And a step of laminating a plurality of unit-reinforcing core materials to produce a reinforcing core material.

In one aspect, the step of manufacturing the reinforcing core material may include stacking the plurality of unit reinforcing core materials so that honeycomb structures of adjacent unit reinforcing core materials are staggered from each other.

The reinforcing core material of the honeycomb structure according to one embodiment and the vacuum heat insulating panel including the same may have high strength while minimizing thermal conduction.

The reinforcing core material of the honeycomb structure according to one embodiment and the vacuum insulation panel including the same can have a high space securing force while using a minimum amount of material.

The effect of the honeycomb structure reinforcing core and the vacuum insulating panel including the honeycomb structure is not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description There will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1 is a schematic view of a vacuum adiabatic panel according to an embodiment.
2 is an exploded perspective view of a vacuum adiabatic panel according to an embodiment.
3 is a plan view of a reinforcing core material of a honeycomb structure according to an embodiment.
4 is an exploded view of a honeycomb structure reinforcing core according to an embodiment.
5 is a cross-sectional view of a vacuum adiabatic panel according to an embodiment.
6 is a side cross-sectional view of a vacuum adiabatic panel according to an embodiment.
7 is an exploded perspective view of a vacuum adiabatic panel according to an embodiment.
8 is a flowchart of a method of manufacturing a reinforcing core material of a honeycomb structure according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments, detailed description of known functions and configurations incorporated herein will be omitted when it may make the best of an understanding clear.

In describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

The components included in any one embodiment and the components including common functions will be described using the same names in other embodiments. Unless otherwise stated, the description of any one embodiment may be applied to other embodiments, and a detailed description thereof will be omitted in the overlapping scope.

FIG. 1 is a schematic view of a vacuum adiabatic panel according to an embodiment, and FIG. 2 is an exploded perspective view of a vacuum adiabatic panel according to an embodiment.

Referring to FIGS. 1 and 2, the vacuum insulating panel 1 according to one embodiment may be installed in a curtain wall of a building. Generally, the floor and ceiling of a building are formed through a slab having a flat plate shape. Thus, each layer of the building can be formed through the space between the slabs. The curtain wall is installed on the outside of the building, for example, on the slab, thereby forming the appearance of the building. The curtain wall includes a mullion having a longitudinal direction perpendicular to the ground and a transom having a horizontal longitudinal direction, wherein the plurality of mullions and the transoms are spaced apart from each other, Into a unit space. A panel or a glass member is installed in the space partitioned by the mullion and the transom to form a unit outer wall of the building. In this case, the unit outer wall on which the panel is installed forms a nonvision part that does not transmit light, and the unit outer wall on which the transparent glass member is mounted is a vision part through which light is transmitted. . As a result, most of the heat transfer between the interior and the exterior of the building is performed through the exterior wall of the building.

The vacuum insulated panel 1 according to one embodiment can be formed in the above-described curtain wall to form an outer wall of the building. By forming a vacuum space in the vacuum insulating panel 1, it is possible to enhance the strength of the panel while enhancing the heat insulating effect of the panel. The vacuum insulating panel 1 according to one embodiment may include a pair of panel plates 111 and 112, a sealing portion 12, and a reinforcing core 10.

The panel plates 111 and 112 can constitute the outer surface of the vacuum thermal insulating panel 1. [ The panel plates 111 and 112 may be arranged in pairs so as to face the inside and the outside of the building, respectively. The panel plates 111 and 112 may be formed to have a rectangular plate shape. The pair of panel plates 111 and 112 may be spaced apart from each other to form a vacuum space for heat insulation. Although the panel plates 111 and 112 are formed as a pair to form one vacuum space, the panel plates 111 and 112 are spaced apart from each other to form a plurality of vacuum spaces You may. Hereinafter, for convenience of explanation, a case where the panel plates 111 and 112 are provided as a pair will be described as an example.

When the pair of panel plates 111 and 112 are spaced apart from each other, a vacuum space may be formed between the pair of panel plates 111 and 112. In this case, since the contact between the panel plates 111 and 112 is blocked at the boundary of the vacuum space, the heat transfer due to the conduction phenomenon is prevented, and the heat transfer due to the convection phenomenon through the internal vacuum is further prevented . In other words, since the heat transfer path is blocked through the vacuum space, the high thermal insulation property of the vacuum insulating panel 1 can be ensured.

The closed portion 12 can seal the vacuum space so that the vacuum state of the vacuum space is maintained. The sealing portion 12 may be interposed in contact with the inner surfaces of the panel plates 111 and 112 along the outer portions of the pair of panel plates 111 and 112. The sealing portion 12 can be connected to the inner surfaces of the panel plates 111 and 112 in a completely tight manner by including a rubber material. Therefore, air can be prevented from flowing into the vacuum space between the panel plates 111 and 112 through the hermetically sealed portion 12.

The sealing part 12 may be connected to the panel plates 111 and 112 through an adhesive so that the sealing part 12 is completely in close contact with the inner surfaces of the panel plates 111 and 112. For example, when an adhesive is applied to the sealing portion 12 contacting the panel plates 111 and 112 and then the pair of panel plates 111 and 112 are pressed in the direction of the vacuum space, 112 and the hermetically sealed portion 12 can be completely in close contact with each other.

According to this structure, since the rim portions of the pair of panel plates 111 and 112 are not directly coupled but are coupled by the sealing portion 12, it is possible to secure the vacuum pressure of the vacuum space, The breakage problem can be solved.

The reinforcing core member 10 is inserted into the vacuum space, so that the strength of the panel plates 111 and 112 can be reinforced. When the vacuum space is formed between the pair of panel plates 111 and 112, the panel plates 111 and 112 are subjected to continuous pressure in the direction of the vacuum space due to the atmospheric pressure outside the vacuum insulation panel 1. If the panel plates 111 and 112 are subjected to a continuous pressure, the panel plates 111 and 112 may be bent in the vacuum direction, which may result in a problem that the strength of the panel is weakened.

The reinforcing core member 10 may contact the pair of panel plates 111 and 112 to provide a resilient force so that the panel plates 111 and 112 are not bent in the vacuum space direction. The reinforcing core material 10 may include a honeycomb structure in which the cubic unit structures 101 including the hollow 102 are connected in series.

The honeycomb structure has a cross-sectional shape in which three vertexes of a regular hexagon having an interior angle of 120 ° are gathered. The honeycomb structure has a maximum volume in a state of having a constant lateral width since a plurality of square columns are continuously connected. In other words, since the honeycomb structure can secure the widest space through the same amount of material, it can be lightweight and have a high space securing force. Further, since the honeycomb structure has high durability in the vertical direction, it has an advantage that it can effectively resist the pressure in the vertical direction. Therefore, the reinforcing core member 10 can have a high supporting strength against the pressure applied to the panel plates 111 and 112 by the atmospheric pressure, because the outer surface of the reinforcing core member 10 contacts the panel plates 111 and 112.

The reinforcing core material 10 may include a plurality of unit layers stacked to form a multi-layer structure. For example, the reinforcing core material 10 may be configured such that three unit layers 10a, 10b, and 10c are stacked as shown in FIG. However, this is merely an example, and the number of unit layers to be stacked is not limited. Hereinafter, for convenience of explanation, a case where three unit layers are stacked will be exemplarily described.

Each unit layer may be formed in a honeycomb structure including unit structures 101 of the same size. Specifically, each of the unit layers may have a shape in which the unit structures 101 including the outer surface of the square pyramid are continuously connected. In this case, each of the unit structures 101 may include a hollow 102 formed through the center of the square pyramid.

FIG. 3 is a plan view of a honeycomb structure reinforcing core material according to one embodiment, and FIG. 4 is an exploded view of a honeycomb structure reinforcing core material according to an embodiment.

For reference, FIG. 3 shows a state in which the vacuum insulated panel 1 of FIG. 1 is viewed in the direction of I-I. Referring to FIGS. 3 and 4, the reinforcing core 10 according to one embodiment may include a plurality of unit layers stacked on each other. Each unit layer may include a unit structure 101 having a honeycomb shape of the same size. In this case, the plurality of unit layers may be arranged so as to have a shape staggered with the unit structures 101 of the adjacent unit layers in a state in which they are stacked on each other. In other words, the edge 101 of the unit structure 101 formed on one unit layer is positioned on the side of the hollow 102 of the unit structure 101 adjacent to the unit layer, on the basis of the state viewed from the direction of the panel plates 111, As shown in FIG.

For example, as shown in FIG. 4, the second unit layer 10b may have a pattern in which the unit structure 101 moves to the left by a predetermined length as compared with the first unit layer 10a. The third unit layer 10c may have a pattern in which the unit structure 101 moves to the left by a predetermined length as compared with the second unit layer 10b. Therefore, when the first unit layer, the second unit layer, and the third unit layer are sequentially stacked as shown in FIG. 3, the unit structures 101 may be arranged so as not to overlap with each other in a plan view.

According to this structure, as compared with the case where the unit structures 101 of the unit layers are laid side by side, the contact area between the unit layers is reduced, so that the area of the heat conduction through the reinforcing core 10 is reduced . As a result, since heat transfer through the reinforcing core material 10 in the vacuum space is reduced, it is possible to have an effect of improving the heat insulating property of the vacuum insulating panel 1.

Moreover, as described above, since the honeycomb structure secures the widest space through the same amount of material, it has the effect of reducing the heat conduction area through the reinforcing core material 10, thereby having the effect of maximizing the heat insulating effect .

The reinforcing core material 10 is made of an inorganic material including foamed concrete, expanded type rock, expanded clay, glass fiber (pure glass fiber bundle twisted without phenol resin used as an adhesive), and various kinds of PE, PP, PS And the like.

5 is a cross-sectional view of a vacuum adiabatic panel according to an embodiment.

For reference, Fig. 5 shows a state in which the vacuum insulated panel 1 is cut along the II-II direction in Fig. Referring to FIG. 5, a reinforcing core material 10 in which a plurality of unit layers are stacked may be installed in a vacuum space of the vacuum adiabatic panel 1. Since the unit structures 101 of each unit layer have a layout staggered with the unit structures 101 of the adjacent unit layers, the contact portions between the unit layers can be minimized as shown in Fig.

6 is a side cross-sectional view of a vacuum adiabatic panel according to an embodiment.

Referring to FIG. 6, the plate panel of the vacuum insulation panel 1 according to one embodiment may have a shape bent outward. The panel plates 111 and 112 may be arranged so that the bent portions are symmetrical with respect to each other about the vacuum space. The above-described sealing portion 12 may be interposed in the bent portions of the pair of panel plates 111 and 112. According to this structure, since the sealing portion 12 is seated in the bent portion, the sealing portion 12 can be stably mounted while maintaining the vacuum state between the pair of panel plates 111 and 112 more firmly .

The bent portions of the pair of panel plates 111 and 112 may be provided with engaging portions 13 that are connected through the panel plates 111 and 112 and the sealing portion 12. The engaging portion 13 includes a nut member 132 and a bolt member 131 which penetrates the other panel plate 111 and 112 from one panel plate 111 and 112 and is coupled to the nut member 132 . According to this structure, when maintenance of the vacuum insulated panel 1 is required, the pair of panel plates 111 and 112 can be easily separated through the disengagement of the engaging portion 13.

As described above, the vacuum insulating panel 1 can secure high strength through the honeycomb structure reinforcing core material 10 disposed in the vacuum space while minimizing the heat transfer through the vacuum space to increase the heat insulating effect. Particularly, the reinforcing core material 10 is connected to a plurality of unit layers having honeycomb patterns staggered from each other, thereby minimizing heat transfer through the reinforcing core material 10 itself, thereby securing both strength and heat insulation.

Hereinafter, a manufacturing method of the reinforcing core material 10 having a honeycomb structure according to an embodiment will be described. In describing the manufacturing method of the reinforcing core material 10 of the honeycomb structure, the description overlapping with the above description is omitted.

7 is an exploded perspective view of a vacuum adiabatic panel according to an embodiment.

Referring to FIG. 7, an insulating core 17 including glass fibers may be provided in the vacuum space of the vacuum adiabatic panel.

The heat insulating core 17 may be formed by twisting glass fibers. For example, the heat insulating core 17 can be formed by bundling pure glass fibers free of phenol resin used as an adhesive. The heat insulating core 17 may be disposed, for example, between the reinforcing core members 10a and 10c. Since the heat insulating core 17 has low thermal conductivity due to the characteristics of the material, it can have an effect of lowering the thermal conductivity through contact with the reinforcing core members 10a and 10c. Although the heat insulating core material 17 is shown as having a panel shape in the drawing, it is only an example for convenience of explanation. The heat insulating core material 17 is formed such that, as the reinforcing core materials 10a and 10c, And may be formed in a honeycomb structure.

8 is a flowchart of a method of manufacturing a reinforcing core material of a honeycomb structure according to an embodiment.

Referring to FIG. 8, a method of manufacturing a reinforced core according to an embodiment includes steps of providing a mold, injecting expanded clay, heating a mold, extracting a unit reinforcing core material from a mold, To thereby produce a reinforcing core material.

Step 210 may be provided with a mold of a honeycomb structure shape. The mold may be formed in a honeycomb structure in which hexagonal pillars are continuously connected. In this case, the mold may be formed to have a multi-layered honeycomb structure. In other words, a multi-layered honeycomb structure can be stacked on one mold. The mold may be formed of a heat-resistant material, for example, a ceramic material, to withstand temperatures of 1200 degrees or higher.

Step 220 can inject the expanded clay into the mold. The expanded clay may be formed of an inorganic material, for example, glass fiber.

Step 230 can heat the metal mold into which the expanded clay is injected. Step 230 may be heated to a high temperature of 900 to 1200 degrees. In this case, the expanded clay may be made into a honeycomb structure including a hollow by expanding with the formation of an internal void.

Step 240 can take out the honeycomb structured unit reinforcing core material from the heated mold. The unit reinforcing core material can be cut and used according to the size of the vacuum insulation panel used.

Step 250 can produce a reinforcing core material by laminating a plurality of unit reinforcing core materials. In the process of laminating the unit reinforcing core members, the unit reinforcing core members can be stacked such that the honeycomb structures of the adjacent unit reinforcing core members are staggered, that is, the contact area is minimized.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. For example, it is contemplated that the techniques described may be performed in a different order than the described methods, and / or that components of the described structures, devices, and the like may be combined or combined in other ways than the described methods, Appropriate results can be achieved even if they are replaced or replaced.

Therefore, other implementations, equivalents to other embodiments and the claims are also within the scope of the following claims.

10: reinforcement core
101: unit structure
102: hollow
111, 112: panel plate
12:

Claims (10)

delete delete delete delete delete Claims [1] A vacuum insulating panel installed on a curtain wall of a building,
A pair of panel plates having a plate shape and spaced apart to form a vacuum space for heat insulation;
A sealing portion which is interposed between the pair of panel plates so as to maintain a vacuum state of the vacuum space in close contact with an inner surface of the pair of panel plates along an outer portion thereof and includes a rubber material; And
And a reinforcing core member that contains expansion clay and glass fibers and is inserted into the vacuum space to support the inner surface of the pair of panel plates to reinforce the strength of the panel plate,
The reinforcing core material,
A first unit layer, a second unit layer, and a third unit layer, each of which includes a honeycomb structure in which a cubic unit structure including a hollow is continuously connected, and sequentially stacked,
The second unit layer has a pattern in which the unit structure moves to the left by a predetermined length as compared with the first unit layer, and the third unit layer has a pattern in which the unit structure has the constant length As shown in FIG.
The first unit layer, the second unit layer and the third unit layer, which are sequentially stacked in the vacuum space,
Wherein the unit structures of the first unit layer, the second unit layer and the third unit layer are arranged so as to be shifted in the horizontal direction and to be positioned at the same height in the vertical direction.
delete The method according to claim 6,
Based on the condition viewed from the panel plate,
And one corner of the unit structure of the unit layer is arranged to pass through the hollow of the unit structure of the adjacent unit layer.
delete delete

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