WO2013084656A1

WO2013084656A1 - Refrigerator

Info

Publication number: WO2013084656A1
Application number: PCT/JP2012/078984
Authority: WO
Inventors: 及川　誠; 佐伯　友康; 良河田
Original assignee: 株式会社東芝; 東芝コンシューマエレクトロニクス・ホールディングス株式会社; 東芝ホームアプライアンス株式会社
Priority date: 2011-12-07
Filing date: 2012-11-08
Publication date: 2013-06-13
Also published as: EP2789952B1; EP2789952A4; CN103975211A; EP2789952A1; TW201335557A; JP2013119999A; CN103975211B; JP5868152B2; TWI512256B

Abstract

A refrigerator according to an embodiment of the present invention is equipped with an insulated housing, and a covering member. The insulated housing is provided as a refrigerator main body, and is coupled to a plurality of insulated wall members provided to an insulated panel between an outer shell and an inner shell. The covering member is provided to a required coupling section among coupling sections of the plurality of insulated wall members, and seals said coupling section.

Description

refrigerator

Embodiment of this invention is related with a refrigerator.

For example, household refrigerators tend to increase their internal volume. The refrigerator is trying to increase the internal volume by reducing the thickness of the peripheral wall of the heat insulating box rather than increasing the size of the heat insulating box that is the main body of the refrigerator. In this case, it is necessary to ensure sufficient heat insulating performance even if the peripheral wall is thinned. Therefore, in addition to filling the peripheral wall of the heat insulation box with a foamable heat insulating material, using a vacuum heat insulation panel is performed. Furthermore, it is also considered that the peripheral wall of the heat insulation box is filled only with the vacuum heat insulation panel. In addition, a vacuum heat insulation panel is a heat insulation panel with high heat insulation performance compared with a foam heat insulation panel, in other words, a heat insulation panel with low heat conductivity.

The vacuum insulation panel is made by, for example, putting a core material made of glass wool, which is a thin fiberglass cotton material, into a gas barrier container made of a laminated film made of aluminum foil and a synthetic resin, and evacuating the inside. It is the panel which obstruct | occluded opening. Thereby, a vacuum heat insulation panel turns into a panel which hold | maintained the inside of a container in the vacuum pressure reduction state. The vacuum insulation panel has a low thermal conductivity, in other words, a high thermal insulation property even if it is thin. Therefore, by using a vacuum heat insulation panel, the peripheral wall of the heat insulation box can have high heat insulation.

Japanese Patent No. 2728318 JP-A-6-147744

A heat insulation box using a vacuum heat insulation panel is configured by dividing a box into a plurality of heat insulation walls and combining and combining the plurality of heat insulation walls. In the heat insulating box configured by combining a plurality of heat insulating walls as described above, outside air enters from a joint portion of the heat insulating walls, or cold air in the heat insulating box penetrates. Accordingly, there arises a problem that condensation occurs inside or outside the joint portion of the heat insulating box.
Then, the refrigerator which can seal the coupling | bond part of a some heat insulation wall part is provided.

The refrigerator of this embodiment includes a heat insulating box and a covering member. The heat insulation box is provided as a refrigerator main body, and is formed by combining a plurality of heat insulation walls provided with a heat insulation panel between an outer shell and an inner shell. The covering member is provided at a required joint portion among the joint portions of the plurality of heat insulating wall portions, and seals the joint portion.

The partial cross-sectional view of the heat insulation box which shows one Embodiment Partial cross-sectional perspective view of an insulated box The perspective view which looked at the heat insulation box from the front side The perspective view which looked at the heat insulation box from the back side Exploded perspective view of heat insulation box (A) is a disassembled perspective view of a vacuum heat insulation panel, (b) is sectional drawing of a vacuum heat insulation panel.

Hereinafter, an embodiment will be described with reference to the drawings. In the following description, the door side of the refrigerator is referred to as “front side”, and the right side when the refrigerator is viewed relative to the door is referred to as “right side”.
3 and 4 show the heat insulating box 1 constituting the refrigerator main body. The heat insulation box 1 as a whole has a rectangular parallelepiped vertical box shape with an open front surface. The internal space of the heat insulation box 1 is a storage space 2. As shown in FIG. 5, the heat insulating box 1 has a ceiling wall portion 1 a, a bottom wall portion 1 b, a left wall portion 1 c, a right wall portion 1 d, and a back wall portion 1 e that are separately manufactured as peripheral walls. It is configured by combining the parts 1a to 1e, in other words, the heat insulating wall parts 1a to 1e. In this case, the number of wall portions is five. The bottom wall portion 1b, the left side wall portion 1c, the right side wall portion 1d, and the back wall portion 1e excluding the ceiling wall portion 1a have a rectangular flat plate shape. The ceiling wall portion 1a has a stepped shape with a rear portion lowered by one step. When the ceiling wall portion 1a has a stepped shape, when the heat insulating box 1 is configured by combining the plurality of wall portions 1a to 1e, the machine room 3 is formed at the rear of the upper portion of the heat insulating box 1. The machine room 3 is provided with a compressor of a refrigeration cycle (not shown).

Here, the configuration of each of the wall portions 1a to 1e will be described. First, the heat insulating function of each of the walls 1a to 1e is obtained by a heat insulator, for example, the vacuum heat insulating panel 4. As shown in FIG. 6 (a), this vacuum heat insulating panel 4 is made of, for example, a core material 5 made of glass wool, which is a cotton-like product of thin glass fibers, in a mat shape, with a laminate film made of aluminum foil and a synthetic resin. The panel is placed in a sealed gas barrier container 6 and the inside thereof is evacuated to close the opening. Thereby, the vacuum heat insulation panel 4 becomes a panel which hold | maintained the inside of the gas barrier container 6 in the vacuum pressure reduction state.

As shown in FIGS. 6 (a) and 6 (b), each of the walls 1a to 1e has a vacuum heat insulation panel 4 filled between a metal outer shell 7 such as a steel plate and a plastic inner shell 8 for example. It is a configuration. The outer shell 7 and the vacuum heat insulating panel 4 are fixed and integrated with each other by bonding or the like. Further, the vacuum heat insulating panel 4 and the inner shell 8 are fixed and integrated with each other by adhesion or the like. Thereby, the vacuum heat insulation panel 4, the outer shell 7, and the inner shell 8 are integrated. In addition, in FIG. 6, the flat wall part was shown. However, the ceiling wall portion 1a has a stepped shape.

In each of the walls 1a to 1e, the inner shell 8 has smaller vertical and horizontal dimensions than the outer shell 7. Further, the vacuum heat insulating panel 4 has a vertical dimension and a horizontal dimension smaller than those of the inner shell 8. Accordingly, the four sides or four ends of the vacuum heat insulating panel 4 do not reach the four sides or four ends of the outer shell 7 and the four sides or four ends of the inner shell 8 do not reach. In other words, the four sides of the vacuum heat insulating panel 4 are present at deeper positions inside the four sides of the outer shell 7 and the four sides of the inner shell 8. A connecting piece 9 bent at a right angle is formed on a predetermined side of the four sides of the outer shell 7 of each of the walls 1a to 1e. The connecting piece 9 formed on a required side of each of the wall portions 1a to 1e is used to connect the outer shells 7 of the wall portions adjacent to each other with screws or the like.

Three horizontal frames 10 to 12 for partitioning the front surface in the vertical direction are attached to the front surface of the heat insulating box 1 configured by combining the wall portions 1a to 1e. A vertical frame 13 is attached between the middle horizontal frame 11 and the lower horizontal frame 12 of the heat insulating box 1. Although not shown, heat insulating walls or partition plates are provided on the rear side of the horizontal frames 10 to 12 and the rear side of the vertical frame 13. The storage space 2 is partitioned into the refrigerator compartment 2a, the vegetable compartment 2b, the ice making compartment 2c, the specification switching compartment 2d, and the freezer compartment 2e in order from the top by these heat insulating walls and the partition plate. The ice making chamber 2c and the specification switching chamber 2d are arranged in the horizontal direction. A door (not shown) for opening and closing the front surfaces of the storage chambers 2a to 2e is attached to the front surface of the heat insulating box 1.

The refrigerator has two evaporators for refrigeration and freezing as coolers. The evaporator for refrigeration is arrange | positioned at the cooling chamber formed in the back | inner part of the refrigerator compartment 2a. The evaporator for freezing is arrange | positioned in the cooling chamber formed in the back | inner part of the freezer compartment 2e. The cold air cooled by the two evaporators is blown by the fan into the refrigerator compartment 2a, vegetable compartment 2b, ice making compartment 2c, specification switching compartment 2d, and freezer compartment 2e. Thereby, the refrigerator compartment is cooled to the refrigerator temperature, and the freezer compartment is cooled to the refrigerator temperature.

FIG. 1 is a cross-sectional view of a ridge angle portion extending vertically at the right rear portion of the heat insulation box 1. FIG. 2 is a cross-sectional perspective view of a ridge portion extending vertically in the right rear portion of the heat insulating box 1. FIGS. 1 and 2 show the configuration of the connecting portion between the back wall portion 1e and the right wall portion 1d. In FIG. 1 and FIG. 2, the subscript “d” is attached to the vacuum heat insulating panel 4, the outer shell 7, and the inner shell 8 constituting the right side wall portion 1 d. On the other hand, the subscript “e” is attached to the vacuum heat insulation panel 4, the outer shell 7, and the inner shell 8 constituting the back wall portion 1 e. Thereby, the vacuum heat insulation panel 4e, the outer shell 7e, and the inner shell 8e constituting the back wall portion 1e are distinguished from the vacuum heat insulation panel 4d, the outer shell 7d, and the inner shell 8d constituting the right wall portion 1d.

1 and 2, a connecting piece 9 is provided at the rear end of the outer shell 7d of the right side wall 1d. The connecting piece 9 is applied to the right end portion of the outer shell 7e of the back wall portion 1e from the inside. The connecting piece 9 is screwed to the right end portion of the outer shell 7e of the back wall portion 1e as described later. Further, the right end of the inner shell 8e of the back wall portion 1e is brought into contact with the surface of the rear end portion of the inner shell 8d of the right wall portion 1d.

As described above, in each of the walls 1a to 1e, the end of the vacuum heat insulation panel 4 does not reach the end of the outer shell 7 and is slightly shorter. Therefore, the right side wall portion 1d and the back wall portion 1e that are connected to each other are separated from each other by the vacuum heat insulation panel 4d and the vacuum heat insulation panel 4e, and there is a gap G therebetween. The gap G is filled with a sponge-like heat insulating material 14 when the right side wall 1d and the back wall 1e are combined.

Between the connected inner shell 8d of the right wall 1d and the inner shell 8e of the back wall 1e, or the right end of the connecting piece 9 of the outer shell 7d of the right wall 1d and the outer shell 7e of the back wall 1e. It is inevitable that some gaps are generated between the two. Therefore, cold air may escape from the inside of the storage space 2 toward the outside of the heat insulation box 1 through the gap, or air outside the heat insulation box 1 may enter the inside of the storage space 2. There is. Therefore, a cover member 15 that is long in the vertical direction is provided in a ridge angle portion that extends in the vertical direction in the right rear portion of the heat insulating box 1. This covering member 15 seals the connecting portion between the right side wall 1d and the back wall 1e. In this case, the covering member 15 is attached from the outside of the ridge corner portion.

The covering member 15 is made of plastic, for example, and has an L-shaped cross section as shown in FIGS. The covering member 15 has a pressing portion on two sides orthogonal to each other. In this case, the covering member 15 includes a pressing portion 16 pressed against the right side wall portion 1d and a pressing portion 17 pressed against the back wall portion 1e. The lateral width of the pressing portion 16 (in this case, the length in the front-rear direction) is set to the outer shell 7d of the right side wall portion 1d when the covering member 15 is directed to the ridge angle portion of the right rear portion of the heat insulating box 1. The dimension is set so as to extend beyond the filling portion of the heat insulating material 14 to the filling portion of the vacuum heat insulating panel 4. Further, the lateral width of the pressing portion 17 (in this case, the length in the left-right direction) is such that when the covering member 15 is directed to the ridge angle portion on the right rear portion of the heat insulating box 1, the outer shell 7e of the back wall portion 1e is formed. On the other hand, the dimension is set so as to extend beyond the filling portion of the heat insulating material 14 to the filling portion of the vacuum heat insulating panel 4e.

The front end portions of the

pressing portions

16 and 17 are bent inward. Due to the presence of the bent

end piece portions

16a and 17a, the inner sides of the

pressing portions

16 and 17 are respectively concave. And inside the

pressing parts

16 and 17 which make these concave shapes, the foaming

heat insulating materials

18 and 19 are filled as a heat insulation layer, respectively. A groove is formed in at least one of the both foaming

heat insulating materials

18 and 19. In this case, for example, a groove 20 is formed on the surface of the foamable heat insulating material 19 in the pressing portion 17 applied to the outer shell 7e of the back wall portion 1e. The groove 20 is located on the front end side in the width direction of the pressing portion 17 and extends in the vertical direction.

The foamable heat insulating material 18 in the pressing part 16 and the foamable heat insulating material 19 in the pressing part 17 extend in a direction intersecting at right angles to each other. The surface of the foamable heat insulating material 18 is in contact with the outer shell 7d of the right side wall portion 1d, and the surface of the foamable heat insulating material 19 is in contact with the outer shell 7e of the back wall portion 1e. In this case, the outer shell 7d of the right side wall portion 1d is formed in a concave shape on the center side, leaving the peripheral portion for reinforcement of the peripheral portion. For this reason, the end piece part 16a of the pressing part 16 applied to the right side wall part 1d is projected inward longer than the end piece part 17a by the side of the back wall part 1e according to the concave part. Further, a portion on the distal end side in contact with the concave portion of the outer shell 7d on the surface of the foamable heat insulating material 18 in the pressing portion 16 protrudes inwardly higher than the portion on the proximal end side.

And as mentioned above, the pressing part 16 extends to the filling part of the vacuum heat insulation panel 4d beyond the separation part, that is, the gap G, between the vacuum heat insulation panel 4d and the vacuum heat insulation panel 4e. Thereby, the foamable heat insulating material 18 covers the space | gap part of the vacuum heat insulation panel 4d and the vacuum heat insulation panel 4e, ie, the clearance gap G from the outer side, and also covers the edge part of the vacuum heat insulation panel 4d. Further, the pressing portion 17 extends beyond the space between the vacuum heat insulation panel 4d and the vacuum heat insulation panel 4e, that is, the gap G, to the filling portion of the vacuum heat insulation panel 4e. Thereby, the foamable heat insulating material 19 covers the space | gap part of the vacuum heat insulation panel 4d and the vacuum heat insulation panel 4e, ie, the clearance gap G from the outer side, and also covers the edge part of the vacuum heat insulation panel 4e.

The covering member 15 has a length equivalent to the length from the lower end of the heat insulating box 1 to the bottom surface 3a of the machine room 3 (the lower step surface of the rear portion of the ceiling wall portion 1a). A plurality of reinforcing

portions

16b and 17b that reinforce attachment portions attached to the heat insulating wall portions are formed intermittently in the vertical direction on the

pressing portions

16 and 17, respectively. These

reinforcement parts

16b and 17b function also as the attaching part itself attached to a heat insulation wall part. These reinforcing

portions

16b and 17b are formed inward from the surfaces of the

pressing portions

16 and 17, respectively, and project into a bottomed cylindrical shape, for example, a cylindrical shape. The amount of protrusion of the reinforcing

portions

16b and 17b is determined to be equal to the depth of the

pressing portions

16 and 17 having a concave shape. The outer bottom surfaces of these reinforcing

portions

16b and 17b are flush with the surfaces of the foam

heat insulating materials

18 and 19.

Through holes 22 are formed in the bottom portions of the reinforcing

portions

16b and 17b of the

pressing portions

16 and 17, respectively. The self-tapping screws 21 for fixing the pressing portion 16 to the right side wall portion 1d or the pressing portion 17 to the back wall portion 1e are passed through these through holes 22, respectively. Furthermore, a burring hole 23 into which the self-tapping screw 21 is screwed is formed in the outer shell 7d of the right side wall 1d. Further, a through hole 24 through which the self-tapping screw 21 is passed is formed in the outer shell 7e of the back wall portion 1e. Further, a burring hole 25 into which the self-tapping screw 21 is screwed is formed in the connecting piece 9 of the right side wall 1d applied to the outer shell 7e.

In order to attach the covering member 15 to the ridge corner portion of the right rear portion of the heat insulating box 1, a pipe, for example, a suction pipe 26 is inserted into the groove 20 of the foam heat insulating material 19, and then the covering member 15 is attached to the heat insulating box 1. It arranges in the ridge corner part of the right rear part. Then, the pressing portion 16 is applied to the outer shell 7d of the right side wall portion 1d, and the pressing portion 17 is applied to the outer shell 7e of the back wall portion 1e. In this state, the self-tapping screw 21 is passed through the through hole 22 of the reinforcing portion 16b of the pressing portion 16 and further screwed into the burring hole portion 23 of the outer shell 7d of the right side wall portion 1d. Thereby, the pressing part 16 is fixed to the right side wall part 1d. Further, the self-tapping screw 21 is sequentially passed through the through hole 22 of the reinforcing portion 17b of the pressing portion 17 and the through hole 24 of the outer shell 7e of the back wall portion 1e, and further the burring hole portion 25 of the connecting piece 9 of the right side wall portion 1d. Screw in. Thereby, the pressing part 17 is fixed to the back wall part 1e.

The groove 20 is formed on the tip side of the pressing portion 17. Therefore, in a state where the covering member 15 is fixed, the suction pipe 26 is positioned on the outer surface of the portion corresponding to the vacuum heat insulation panel 4e of the back wall portion 1e, that is, the portion of the outer shell 7e that is in contact with the vacuum heat insulation panel 4e. To do. The suction pipe 26 connects the two evaporators for refrigeration and freezing and the suction port of the compressor. A low temperature liquid refrigerant flows through the suction pipe 26.

According to the present embodiment, the covering member 15 is attached to the ridge angle portion of the right rear portion of the heat insulating box 1. Therefore, the joint portion between the right wall portion 1d and the back wall portion 1e is sealed by the covering member 15 from the outside. As a result, even if there is a slight gap in the connecting portion between the right side wall 1d and the back wall 1e, the cool air in the storage space 2 leaks to the outside, or the outside air enters the storage space 2. Can be prevented. Therefore, it is possible to prevent the condensation on the

outer shells

7d and 7e and the

inner shells

8d and 8e, and to improve the cooling efficiency of the storage space 2.

Particularly in the present embodiment, the covering member 15 is provided with foaming

heat insulating materials

18 and 19. The foamable

heat insulating materials

18 and 19 are in close contact with the outer shell 7d of the right side wall portion 1d and the outer shell 7e of the back wall portion 1e by elastically deforming themselves. Therefore, the sealing effect is particularly excellent.

Further, in the present embodiment, the connecting piece 9 provided in the outer shell 7d of the right side wall 1d is applied to the outer shell 7e of the back wall 1e from the inside, and the reinforcing part 17b provided in the pressing portion 17 of the covering member 15 is provided on the back wall. The outer shell 7e of the portion 1e is applied from the outside, and the reinforcing portion 17b is fastened and fixed to the burring hole portion 23 of the connecting piece 9 by the self-tapping screw 21. As a result, the connecting piece 9 of the outer shell 7d of the right side wall 1d and the outer shell 7e of the back wall 1e are strongly tightened to reduce the gap generated between them. Therefore, the sealing performance can be further improved.

Moreover, the foam

heat insulating materials

18 and 19 are present in the portion corresponding to the gap G portion. Further, in the present embodiment, the foamable

heat insulating materials

18 and 19 cover not only the portion corresponding to the gap G but also the portion corresponding to the gap G, and further extend to the portion where the vacuum

heat insulating panels

4d and 4e exist. ing. Therefore, even if the heat insulating material 14 filled in the gap G is inferior in heat insulating properties compared to the vacuum

heat insulating panels

4d, 4e, the heat insulating shortage of the heat insulating material 14 can be compensated by the foam

heat insulating materials

18, 19. . Therefore, it is possible to improve the heat insulation performance of the joint portion between the right side wall 1d and the back wall 1e.

In this embodiment, the suction pipe 26 through which the low-temperature refrigerant flows is covered with the foamable heat insulating material 19. Thereby, it can prevent that dew condensation arises in the suction pipe 26. FIG.

For example, in the case where the suction pipe 26 is disposed at a position corresponding to the gap G, when the outer shell 7e is cooled by the suction pipe 26, the refrigerated temperature zone (for example, 2 The problem is that dew condensation occurs when the air is heated up to 3 ℃. In this embodiment, the suction pipe 26 is arrange | positioned in the position corresponding to the vacuum heat insulation panel 4e. Therefore, even if the outer shell 7e is cooled by the suction pipe 26, the air in the refrigeration temperature zone in the gap G does not touch this cooled portion. Therefore, it is possible to prevent a problem that condensation occurs in a portion cooled by the suction pipe 26.

Further, reinforcing

portions

16 b and 17 b are provided on the cover member 15, and these reinforcing

portions

16 b and 17 b are fixed to the right side wall portion 1 d and the back wall portion 1 e by the self-tapping screw 21. Thereby, the intensity | strength with respect to the clamping force of the self-tapping screw 21 can be improved. That is, if the reinforcing

portions

16b and 17b are not provided, the covering member 15 receives a tightening force of the self-tapping screw 21 and bends to accumulate internal stress. However, in this embodiment, occurrence of such a problem can be prevented.

Further, in the covering member 15, the pressing portion 16 is fixed to the right side wall portion 1d, and the pressing portion 17 is fixed to the back wall portion 1e. Such a covering member 15 holds the right side wall portion 1d and the back wall portion 1e at a coupling angle of 90 degrees because the pressing portion 16 and the pressing portion 17 extend in directions orthogonal to each other. It has a function, that is, a function of maintaining the crossing angle of the right side wall 1d and the back wall 1e at a right angle. Further, the pressing portion 16 is formed with a reinforcing portion 16b, and the pressing portion 17 is formed with a reinforcing portion 17b. Therefore, the strength as the covering member 15 is improved, and the function of holding the right wall portion 1d and the back wall portion 1e at a coupling angle of 90 degrees can be strengthened.

The above embodiment is presented as an example, and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

For example, the walls 1a to 1e are filled with a vacuum heat insulating panel 4 and a foam heat insulating material filled inside or outside the vacuum heat insulating panel 4 between the outer shell 7 and the inner shell 8. Also good.
The heat insulating box 1 is not limited to the one constituted by the five wall portions 1a to 1e. For example, the heat insulation box 1 is formed by integrally forming two wall portions such as the left side wall portion 1c and the back wall portion 1e, and the bottom wall portion 1b and the back wall portion 1e. Also good.

The pipe covered with the foamable heat insulating material may be a pipe other than the suction pipe.
The reinforcing part may be formed by forming a through hole in the surface part of the

pressing parts

16 and 17 and forming a cylindrical shape around the through hole.
The reinforcing

portions

16b and 17b are not limited to a cylindrical shape.
The covering member covers, from the inside of the storage space 2, a joint portion of a plurality of heat insulating wall portions, for example, a corner portion composed of the inner shell 8d of the right wall portion 1d and the inner shell 8e of the rear wall portion 1e. There may be.

The covering member may be provided at a required joint portion among the joint portions of the walls 1a to 1e. Therefore, the covering member does not need to be particularly provided in a portion that can be sealed by, for example, applying a sealing agent.
Instead of the vacuum heat insulation panel 4, another heat insulator, for example, a foam heat insulation panel may be used.

Claims

A heat insulating box body that is provided as a refrigerator main body and that combines a plurality of heat insulating wall portions provided with a heat insulating panel between the outer shell and the inner shell,
A covering member that is provided in a required coupling portion among the coupling portions of the plurality of heat insulating wall portions and seals the coupling portion;
Refrigerator.
The refrigerator according to claim 1,
The two heat insulating wall portions, in which the coupling portion is sealed by the covering member, the heat insulating panel of one heat insulating wall portion and the heat insulating panel of the other heat insulating wall portion are separated from each other,
Each of the covering members has a heat insulating layer between the two heat insulating wall portions,
The said heat insulation layer is a refrigerator which covers the space | interval part of the heat insulation panel of one heat insulation wall part and the heat insulation panel of the other heat insulation wall part at least.
The refrigerator according to claim 1 or 2,
A refrigerator in which piping is provided inside the covering member.
The refrigerator according to claim 3,
The pipe is a suction pipe connecting an evaporator and a compressor,
The said suction pipe is the refrigerator corresponding to the part in which the said heat insulation panel is provided.
In the refrigerator according to any one of claims 1 to 4,
The said cover member is a refrigerator which has a reinforcement part which reinforces the part attached to the said heat insulation wall part.
The refrigerator according to claim 5,
The reinforcing part has a bottomed cylindrical shape,
The bottomed cylindrical reinforcing portion is a refrigerator that is fastened to the heat insulating wall portion with a screw in a state where the bottom portion is in contact with the heat insulating wall portion.
The refrigerator according to any one of claims 1 to 6,
The said cover member is fixed so that the ridge corner part of the said heat insulation box may be covered from an outer side, The refrigerator which hold | maintains the crossing angle of the two said heat insulation wall parts couple | bonded in this ridge corner part at right angle.