JP6976564B2 - refrigerator - Google Patents

Description

The present invention relates to door packing attached to a refrigerator door.

Insulation devices such as refrigerators are configured such that the storage chamber is opened and closed by a door fitted with a door packing. In a refrigerator in which the storage chamber is sealed by door packing, the air in the refrigerator is cooled and contracted, and a negative pressure is generated in the refrigerator. This negative pressure strengthens the close contact between the storage chamber and the door packing, and requires a large force when opening.

In order to reduce the force for releasing, a configuration for releasing the negative pressure is considered. For example, as disclosed in Patent Document 1, an operation rod having a handle is attached to the door, a valve for opening and closing a communication hole is provided in the heat insulating door, and when the handle is separated from the valve, the valve opens and the negative pressure is released. The refrigerator is known. Further, as disclosed in Patent Document 2, a refrigerator that elastically deforms the gasket by a drive source that pushes the door forward from the closed position and opens the storage chamber to reduce the negative pressure in the storage chamber. It has been known.

Japanese Unexamined Patent Publication No. 8-233440 Japanese Unexamined Patent Publication No. 2009-052787

However, in Patent Document 1, it is necessary to add a valve body for constituting the valve and a spring for opening the valve, which causes a problem that the configuration becomes complicated and the heat insulating performance is further deteriorated. Further, in Patent Document 2, it is necessary to add a drive source, and there is a problem that the configuration is similarly complicated. Adding such a complicated configuration causes an increase in cost.

Therefore, an object of the present invention is a refrigerator that solves the above-mentioned problems, has an uncomplicated configuration, and releases a negative pressure without deteriorating the heat insulating performance, that is, a refrigerator having excellent convenience while suppressing an increase in cost. Is to provide.

In order to solve the above problems, the refrigerator according to the present invention is characterized by being configured as follows.

First, the refrigerator of the present invention is attached around the entire circumference including the storage chamber, the door that opens and closes the storage chamber, and the four sides of the door, and seals the door and the storage chamber when the door is closed. The door packing comprises a portion to be attached to a groove formed in the door, a fin shape for sealing the door, and a bag shape for attaching a magnet, and the door packing is provided with at least one of four sides. A portion of the door packing on the side to be attached to the groove formed in the door is cut out, and when the door is opened, the door packing is deformed and the air in the refrigerator communicates with the outside air through the notch. It is characterized by that.

Since the part of the door packing to be attached to the door is notched, the door packing is deformed when the door is opened, and the air inside the refrigerator and the outside air communicate with each other through the notch to release the negative pressure inside the refrigerator.

Further, the refrigerator of the present invention is attached around the entire circumference including the storage chamber, the door that opens and closes the storage chamber, and the four sides of the door, and seals the door and the storage chamber when the door is closed. The door packing comprises a portion to be attached to a groove formed in the door, a fin shape for sealing the door, and a bag shape for attaching a magnet, and the door packing is provided with at least one of four sides. The root of the portion of the door packing on the side to be attached to the groove formed in the door is notched in the direction of the side, and when the door is opened, the door packing is deformed and the inside of the refrigerator is formed from the notch. It is characterized by the fact that the air in the door communicates with the outside air.

Due to the notch at the base of the part to be attached to the door of the door packing, when the door is opened, the door packing is deformed, and the air inside the refrigerator and the outside air communicate with each other from the notch, and the negative pressure inside the refrigerator. To open.

Further, the present invention is characterized in that the notch or the notch has a length of 100 mm or less.

If the length of the notch or the notch in the direction parallel to the mounting portion of the packing is increased, the door packing may be loosely attached to the door and the door packing may come off. In addition, the degree of sealing when the door is closed is reduced, so 100 mm or less is preferable.

Further, the present invention is characterized in that the notch or the notch is present on one side or a plurality of each side.

There may be a plurality of the notches or notches on one side of the four sides of the door, and there may be a plurality of cutouts or cuts on each side. As a result, the air inside the refrigerator and the outside air can easily communicate with each other, which is preferable.

Further, the present invention is characterized in that the door is a rotary door or a pull-out door.

The door according to the present invention can be used for any door in which the door packing attached to the door is in close contact with the storage. In this case, a rotary door and a pull-out door are preferable.

Further, the present invention can also be applied to a warm storage, a chest, or the like, which is a device other than a refrigerator that uses door packing.

It is a perspective view schematically showing the whole refrigerator which concerns on one Embodiment of this invention. FIG. 3 is a perspective view schematically showing a state in which the refrigerator door shown in FIG. 1 is removed. It is a perspective view schematically showing the state which the door packing of the door shown in FIG. 1 is attached. (A) is a perspective view schematically showing a state in which the door packing of the door shown in FIG. 1 is removed, and (b) is a perspective view schematically showing the door packing of the door shown in FIG. 1. FIG. 3 is a plan sectional view showing an AA cross section of FIG. FIG. 5 is an enlarged view showing a region of the door packing shown in FIG. 5, and is a cross-sectional view showing a state in which the door packing attached to the door seals the storage chamber. It is a figure which shows the door packing which concerns on Embodiment 1 of this invention | It is the figure which looked at the notch of the part to attach to the groove made from the side. It is a figure which shows the door packing which concerns on Embodiment 2 of this invention | It is the figure which looked at the notch of the part to attach to the groove from the side. It is sectional drawing which shows the state which the door packing attached to the door in the part of the notch which concerns on Embodiment 1 of this invention seals a storage chamber. It is sectional drawing of the side surface which shows the state just before opening the storage chamber by the door packing attached to the door in the part of the notch which concerns on Embodiment 1 of this invention.

Hereinafter, various embodiments for carrying out the present invention will be described with reference to the drawings. In each drawing, the corresponding members having the same function are designated by the same reference numerals. Although the embodiments are shown separately for convenience in consideration of the explanation of the main points or the ease of understanding, partial replacement or combination of the configurations shown in different embodiments is possible. In the second and subsequent embodiments, the description of the matters common to the first embodiment will be omitted, and only the differences will be described. In particular, similar actions and effects with the same configuration will not be mentioned sequentially for each embodiment.

(About the overall configuration of the refrigerator)
FIG. 1 is a perspective view schematically showing the entire refrigerator according to one embodiment of the present invention. As shown in FIG. 1, the refrigerator 11 of one embodiment of the present invention includes a refrigerator main body 13 capable of storing food and the like inside. The refrigerator body 13 includes a door 15 that opens and closes an opening in front of the refrigerator body 13.

FIG. 2 is a perspective view schematically showing a state in which the door of the refrigerator shown in FIG. 1 is removed. The parts constituting the refrigerator will be described with reference to FIG.

The refrigerator main body 13 is surrounded by the upper surface portion, the lower surface portion, the back surface portion, and both side surface portions of the refrigerator main body 13 in which the heat insulating material is arranged, except for the opening on the front side. When the door 15 is closed, the upper surface portion, the lower surface portion, and the side surface portions 21a to 21d on the opening side of the upper surface portion, the lower surface portion, and both side surface portions are in close contact with the door packing.

The storage chamber 23 is provided with a plurality of shelves 25a to 25e, can store a large number of foods and the like, and can effectively utilize the space of the storage chamber. Here, it is a one-door refrigerator with one storage chamber, and the temperature is substantially constant in each shelf.

(Explanation of door packing)
FIG. 3 is a perspective view schematically showing a state in which the door packing of the door shown in FIG. 1 is attached. 4 (a) is a perspective view schematically showing a state in which the door packing of the door shown in FIG. 1 is removed, and FIG. 4 (b) is a schematic view showing the door packing of the door shown in FIG. It is a perspective view. FIG. 5 is a plan sectional view showing a cross section taken along the line AA of FIG. The door packing constituting the refrigerator door will be described with reference to FIGS. 3 to 5.

The shape and function of the door 15 will be described with reference to FIG. The door 15 has a substantially rectangular shape in accordance with the opening side surface portion on the front side of the storage chamber. The inner surface of the door 15 can be provided with a shelf having a storage function. The door 15 has a certain thickness and has heat insulating properties, and as will be described later, the refrigerator has heat retaining properties by blocking the outside air by door packing. The outer surface of the door 15 is flat as shown in FIG. 1, but a display device or the like may be attached to monitor the state inside the door.

The arrangement and attachment / detachment of the door packing with respect to the door 15 will be described with reference to FIG. The door 15 can be separated into a door outer member 31 shown in FIG. 4A and a door packing 33 shown in FIG. 4B. The door outer shape member occupies most of the outer shape and function of the door, and is hereafter referred to as a door without distinction.

The surface portions 21a to 21d on the opening side of the refrigerator body 13 are formed of a painted steel plate, and are provided with a suction portion for being in close contact with the outer periphery of the inner surface of the door 15. The door packing 33 is arranged at a position corresponding to this suction portion. Therefore, the door packing 33 is provided over the entire circumference corresponding to the suction portions on the four sides of the door 31. A groove is cut in the door 31 over the entire circumference thereof, and the door packing 33 is attached by inserting a portion to be attached to the door into the groove.

A state in which the door packing is attached to the door will be described with reference to FIG. FIG. 5 is a cross-sectional view of the refrigerator body 13 in a closed state closed by the door 31. In this closed state, the door packing 33 is arranged between the door 31 and the refrigerator body 13 on both the left and right sides of the door 31.

The refrigerator body 13 and the door 31 form a storage chamber 23 which is a closed space. The door packing 33 seals the inside by blocking the air inside the refrigerator body 13 and the air outside the door 31. By sealing the inside, the air inside the refrigerator is separated from the outside air and cooled, and the temperature drops. As the temperature inside the refrigerator drops and the air is sealed, the air inside the refrigerator contracts, creating a negative pressure inside the refrigerator. Further, when the door is opened, the door packing is extended until the magnetic force due to the magnet of the door packing can be released, and the inside of the refrigerator becomes more negative pressure.

Further, although one door is used according to the number of storage chambers, the present invention is not limited to this, and if there are a plurality of storage chambers, a plurality of doors can be provided.

Next, FIG. 6 is an enlarged view showing the area of the door packing shown in FIG. 5, and is a cross-sectional view showing a state in which the door packing attached to the door seals the storage chamber. The door packing of the present invention will be described in more detail with reference to FIG.

As the door packing 33, rubber such as urethane rubber, silicone rubber, ethylene propylene rubber, chloroprene rubber, polyethylene resin, polyvinyl chloride and the like can be used. These materials may be selected in consideration of weather resistance, chemical resistance and the like.

The door packing 33 has elastic deformability. That is, the door packing 33 is easily compressed and deformed corresponding to the close contact portion of the refrigerator body 13 when the door 31 is closed, and is restored when the door 31 is opened and the door packing 33 is separated from the refrigerator body 13. .. Thereby, the inside of the storage chamber can be sealed. Further, due to this elastic deformability, the door packing 33 can be compressed and fitted into the door 31 and then restored and attached.

The door packing 33 includes a portion 37 to be attached to a groove formed in the door. A groove 35 having a circular cross section is cut over the entire circumference of the door 31, and the door packing 33 is a portion to be attached to the groove having a stopper having a cross section of an arrow at the tip of a body portion that is closely fitted to the groove 35. 37 is provided. The door packing is attached to the door 31 by fitting the portion 37 to be attached to the groove into the groove 35.

The portion 37 to be attached to the groove can prevent air from communicating from between the door 31 and the door packing 33 by the body portion that fits closely to the groove 35. Further, due to the stopper having the cross section of the arrow described above, when the door 31 is opened, the adhesion between the refrigerator body 13 and the door packing 33 overcomes the connection force between the door packing 33 and the door 31, and the door packing comes off. There is no.

Further, the door packing 33 has a fin shape 39. In the door packing 33, when the door 31 is closed, the fin shape 39 is elastically deformed and comes into close contact with a flat portion near the periphery of the groove 35 to further seal the door 31 and the door packing.

Further, the door packing 33 includes a bag shape 41 to which a magnet is attached. The magnetic force of this magnet becomes a force for coming into close contact with the refrigerator main body 13, and since it is integrated with the door packing 33, the door 31 and the refrigerator main body 13 can be attracted to each other. When the door 31 is closed, the door packing 33 is in close contact with the suction portion of the refrigerator body 13 due to the bag shape 41 to which the magnet is attached.

(Embodiment 1)
FIG. 7 is a view showing the door packing according to the first embodiment of the present invention, in which (a) a cross-sectional view showing a notch of a portion to be attached to a groove formed in the door of the door packing, and (b) the door packing. It is the figure which looked at the notch of the part to attach to the groove formed in the door of the door from the side. The first embodiment of the present invention will be described with reference to FIG. 7.

Referring to FIG. 7 (a), the door packing comprises a portion 143 in which a portion to be attached to a groove formed in the door is notched. The part to be attached to the groove is cut out from the root so as to leave the bag shape 41 and the fin shape 39 to attach the magnet, so that when the door is closed, the seal is maintained and the door is opened at this part. At that time, the air inside the refrigerator and the outside air communicate with each other.

In FIG. 7A, the portion that is not cut out is represented by a white dotted line. Therefore, it does not fit in the groove at this portion. Further, the bag shape 41 to which the fin shape 39 and the magnet containing the magnet 42 are attached is continuously formed. FIG. 7B is a side view confirming this from the direction of the arrow BB. It can be seen that a portion of the door packing is cut out along the length to which the door packing is attached. Since this portion cannot be attached, a fin shape 39 and a bag shape 41 for attaching a magnet are attached in conjunction with the attachment portions 37 on the left and right sides of the notch.

The shape of the notch is, as an example, a rectangle with rounded corners. Such a rectangle is preferable in consideration of the fact that the opening can be increased when the outside air and the air inside the refrigerator communicate with each other while maintaining the strength of the mounting portion.

If the length of this rectangular notched portion 143 in the mounting length direction is lengthened, the mounting to the door becomes loose, and when opening the door, there is a risk that the door packing will come off when a force is applied. be. In addition, the degree of sealing when the door is closed is reduced, so 100 mm or less is preferable. More preferably, it is 10 mm or more and 80 mm or less.

The corners may be thickened to be reinforced. By rounding the corners, the durable strength of the packing can be increased, and by increasing the thickness, the durable strength can be further increased.

The shape of the notched portion is not limited, and may be a triangle, an inverted triangle, a parallelogram, a trapezoid, a hexagon with rectangular corners, a square, an ellipse, or the like. The airtightness can be maintained when the door is closed, and when the door is open, it is sufficient to open an opening through which the air inside the refrigerator and the outside air communicate with each other when the door is deformed.

(Embodiment 2)
FIG. 8 is a view showing the door packing according to the second embodiment of the present invention, in which (a) a cross-sectional view showing a notch of a portion to be attached to a groove formed in the door of the door packing, and (b) a door packing. It is the figure which looked at the notch of the part to attach to the groove formed in the door from the side. The second embodiment of the present invention will be described with reference to FIG.

Referring to FIG. 8 (a), the door packing comprises a portion 243 in which a portion 37 attached to a groove formed in the door is notched. The notch 243 is at the base of the portion to be attached to the groove formed in the door, that is, the lower part of the fin shape 39 of the door packing, and above the portion 37 to be attached to the groove. The shape of the notch 243 is a straight line shape. By doing so, when the door is closed, the airtightness is maintained, and when the door is opened, this part is deformed and opened to allow the air inside the refrigerator and the outside air to communicate with each other.

In FIG. 8A, since the root of the portion 37 to be attached to the groove is notched, there is no attachment force in this portion, but the portion 37 is fitted into the groove of the door. FIG. 8B is a side view of the door packing confirmed from the direction of arrow CC. It can be seen that a part of the door packing is notched along the length direction in which the door packing is attached. The bag shape 41 for attaching the magnet containing the fin shape 39 and the magnet 42, and the portion 37 to be attached to the groove formed in the door are continuously formed in parallel with the arrangement of the packing and attached to the door.

The shape of the notch, as an example here, is a straight line parallel to the portion to be attached to the groove of the packing. A straight line is preferable for communicating the outside air and the air inside the refrigerator because the opening is large and easy to open when deformed.

If the length of the notched portion 243 is increased, the door may be loosely attached to the door, the door may be opened, and the door packing may come off when a force is applied. In addition, the degree of sealing when the door is closed is reduced, so 100 mm or less is preferable. More preferably, it is 10 mm or more and 80 mm or less.

The circumference of the notch may be thickened to reinforce it. Further, the end portion may be rounded so as to disperse the stress. By doing so, the durable strength of the notch can be increased.

The notch may be hollowed out or closed. Further, the end portion may be rounded so as to have rounded corners. Further, the shape may be slanted rather than parallel to the packing, or may be zigzag. The airtightness can be maintained when the door is closed, and when the door is open, it is sufficient to open an opening through which the air inside the refrigerator and the outside air communicate with each other when the door is deformed.

An embodiment of a refrigerator attached to a door at a notch portion according to the first embodiment is shown.

FIG. 9 is a cross-sectional view showing a state in which the door packing attached to the door at the notch portion according to the first embodiment of the present invention seals the storage chamber. FIG. 10 is a cross-sectional view of a side surface showing a state immediately before the door packing attached to the door at the notch portion according to the first embodiment of the present invention releases the storage chamber. A state in which the door packing seals the door will be described with reference to FIG.

As shown in FIG. 9, since the existing refrigerator is used, the groove 35 is formed as in the conventional case. However, since the mounting portion 143 of the door packing 33 is notched, this portion is a gap. This notched portion, which is a gap, is 50 mm in length and is opened at two locations, one on each side of the door, in consideration of mounting strength and elastic deformability.

The door 31 is in close contact with the refrigerator body 13 by a magnet. Further, the fin shape 39 is elastically deformed so as to be in close contact with the flat portion of the door 31 and to be hermetically sealed.

As shown in FIG. 10, when the door is opened, it is pulled by the door and the door packing 33 is deformed. The communication hole 151 created by deforming the door packing 33 allows the air inside the refrigerator to communicate with the outside air. As a result, the negative pressure in the refrigerator is eliminated, and the door 31 is opened with a small force.

In the refrigerator to which the present invention is applied, the opening force of the door is reduced by about 20% from about 2.5 kgf to about 2.0 kgf as compared with the conventional refrigerator.

Here, the case where there are notches on the left and right sides of two of the four sides of the door is shown, but there may be a plurality of notches on one side of the four sides of the door, and there may be one or more on each side. You may. As a result, the air inside the refrigerator and the outside air can easily communicate with each other, which is preferable.

Similarly, in the notch as in the second embodiment, when the door is opened, a communication hole is generated without being pulled by the door and deformed or deformed, and the air inside the refrigerator and the outside air communicate with each other. .. As a result, the negative pressure inside the refrigerator is eliminated, and the door is opened with a small force.

Even in the case of such a cut, not only when there is one of the four sides of the door, but also when there are a plurality of such cuts on one side of the four sides of the door, there may be a plurality of such cuts on each side. As a result, the air inside the refrigerator and the outside air can easily communicate with each other, which is preferable.

The door according to the present invention can be used for any door in which the door packing attached to the door is in close contact with the storage. In this embodiment, it can be applied to a rotary door and a pull-out door.

Although the present embodiment shows that the refrigerator is used, the present invention can also be adopted for a warm storage, a chest, or the like, which is a device other than the refrigerator using the door packing.

INDUSTRIAL APPLICABILITY According to the present invention, the negative pressure can be released by utilizing the property that the door packing is deformed when the door of the refrigerator is opened. That is, it is possible to provide a highly convenient refrigerator while suppressing an increase in cost.

13 Refrigerator body 15 Door 21a-21d Open side surface of refrigerator body 23 Storage room 25a-25e Shelf 31 Door 33 Door packing 35 Groove 37 Groove attachment part 39 Fin shape 41 Magnet mounting bag shape 42 Magnet (ferrite rubber)
143 The part where the part to be attached to the groove is cut out 151 The communication hole 243 The part where the part to be attached to the groove is notched

Claims (5)

Storage room and
A door that opens and closes the storage room,
It is attached all around the door including the four sides, and includes a door packing that seals the door and the storage chamber when the door is closed.
The door packing includes a portion to be attached to a groove formed in the door, a fin shape for sealing the door, and a bag shape for attaching a magnet.
At least one of the four sides of the door packing is notched to attach to the groove formed in the door.
A refrigerator in which the door packing is deformed when the door is opened, and the air inside the refrigerator communicates with the outside air through the notch. Storage room and
A door that opens and closes the storage room,
It is attached all around the door including the four sides, and includes a door packing that seals the door and the storage chamber when the door is closed.
The door packing includes a portion to be attached to a groove formed in the door, a fin shape for sealing the door, and a bag shape for attaching a magnet.
At least one of the four sides is notched in the direction of the side at the base of the portion of the door packing to be attached to the groove formed in the door.
A refrigerator in which the door packing is deformed when the door is opened, and the air inside the refrigerator communicates with the outside air through the notch. The refrigerator according to claim 1 or 2, wherein the notch or the notch is 100 mm or less in length. The refrigerator according to any one of claims 1 to 3, wherein the notch or the notch is present on one side or a plurality of each side. The refrigerator according to any one of claims 1 to 4, wherein the door is a rotary door or a pull-out door.

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