TW201341739A - Refrigerator - Google Patents

Abstract

A refrigerator includes a heat insulating box body having a storage room and an opening connected with the storage room, and a refrigeration cycle for cooling the storage room. Wall parts constituting the heat insulating box body is constituted by setting a heat insulating member between an inner member and an outer member. At least one of the wall parts is disposed on the outer member and has a protrusion portion protruding toward the outside of the storage room or a recess portion depressing toward the inside of the storage room. The heat dissipation pipe constituting a part of the refrigeration cycle is disposed between the inner member and the outer member to connect with the protrusion portion or the recess portion.

Description

refrigerator

An embodiment of the invention is directed to a refrigerator.

In recent years, there has been disclosed a refrigerator in which a heat pipe is disposed in a wall portion of a heat insulating box, and the heat pipe constitutes a part of a refrigeration cycle.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2011-80692

However, in such a refrigerator, for example, when the wall portion of the heat insulating box is placed close to the wall of the room or the like, the heat is stagnated around the heat pipe and the heat dissipation efficiency is lowered.

Therefore, in a refrigerator in which a heat dissipating pipe is disposed in a wall portion of a heat insulating box, even when a wall portion of the heat insulating box is disposed close to a wall of a room or the like, heat dissipation of the heat pipe can be suppressed. The decline in efficiency.

The refrigerator according to the present embodiment includes a heat insulating box having a storage chamber and an opening connected to the storage chamber, and a refrigeration cycle for cooling the storage chamber. The wall portion constituting the heat insulating box is configured to have a heat insulating member between the inner member and the outer member. At least one of the wall portions has a convex portion that is located outside the outer member and that protrudes toward the outside of the storage chamber or a concave portion that is recessed toward the inner side of the storage chamber. a heat pipe constituting a part of the above refrigeration cycle is disposed to be in contact with the outer member and the inner member The convex portion or the concave portion.

Hereinafter, a refrigerator according to a plurality of embodiments will be described with reference to the drawings. In the respective embodiments, substantially the same components are denoted by the same reference numerals, and their description is omitted.

(First embodiment)

First, the first embodiment will be described with reference to Figs. 1 to 5 .

As shown in FIG. 1, the refrigerator 10 is comprised by the heat insulation box 11 as a main body. A refrigerator cycle (not shown) is incorporated in the refrigerator 10. The refrigeration cycle includes a compressor, a condenser, a cooler, and the like (not shown). As shown in Fig. 2, the heat insulating box 11 is formed in a rectangular box shape with one opening. In the following description, the opening side of the heat insulating box 11 is defined as the front side of the refrigerator 10.

The inside of the heat insulating box 11 is divided into a storage compartment of a refrigerating temperature section and a storage compartment of a freezing temperature section. Specifically, as shown in FIG. 1, in the inside of the heat insulation box 11, the refrigerator compartment 12 is provided in the uppermost part, and the vegetable compartment 13 is provided in the lower part. Further, below the vegetable compartment 13, an ice making chamber 14 and a small freezing compartment 15 are arranged side by side, and a freezing compartment 16 is provided below the lowermost portion.

The refrigerating compartment 12 and the vegetable compartment 13 are storage compartments of a refrigerating temperature section, that is, a plus temperature section. Generally, the refrigerating compartment 12 and the vegetable compartment 13 are set to different temperatures. For example, the maintenance temperature of the refrigerating compartment 12 is set to 1 ° C to 5 ° C, and the maintenance temperature of the vegetable compartment 13 is set to be slightly higher than 2 ° C to 6 ° C. Further, the ice making chamber 14, the small freezing compartment 15, and the freezing compartment 16 are storage compartments of a freezing temperature section, that is, a minus temperature section, and are set, for example, to -10 ° C ~ -20 ° C. The refrigerator compartment 12, the vegetable compartment 13, the ice making compartment 14, the small freezer compartment 15, and the freezer compartment 16 are cooled to respective temperature sections by a refrigeration cycle not shown.

The opening of the front surface of the heat insulating box 11 is connected to each of the storage compartments 12 to 16. The storage material is placed in each of the storage compartments 12 to 16 through the opening. On the front surface side of the heat insulating box 11, a plurality of heat insulating doors are provided in order to open and close the opening of the front surface. Specifically, on the front side of the refrigerating compartment 12, heat-insulated doors 17 and 18 for the refrigerating compartment of the door type are provided. The heat insulating doors 17 and 18 for the refrigerator compartment are rotated in the left-right direction with the left and right hinges 171 and 181 as rotation axes, respectively, to open and close the refrigerator compartment 12.

A suction-type heat insulating door 19 for a vegetable compartment is provided on the front side of the vegetable compartment 13. The vegetable compartment heat insulating door 19 is provided with a vegetable storage container (not shown) on the back side thereof, and the vegetable compartment 13 is opened and closed. A suction-type heat insulating door 20 for an ice making room is provided on the front side of the ice making chamber 14. The ice-making chamber heat insulating door 20 is attached with an ice-making container (not shown) on the back side thereof, and opens and closes the ice-making chamber 14. A small freezer compartment heat insulating door 21 is provided on the front side of the small freezer compartment 15. The small-sized freezer compartment heat insulating door 21 is provided with a storage container (not shown) on its back side, and opens and closes the small freezer compartment 15. A heat insulating door 22 for a freezing compartment is provided on the front side of the freezing compartment 16. The heat insulating door 22 for a freezer compartment has a storage container (not shown) attached to the back side, and the freezing compartment 16 is opened and closed.

The heat insulating box 11 is formed in a box shape having a front surface open by combining a plurality of divided heat insulating walls. Specifically, as shown in FIG. 2 , the heat insulating box 11 combines the left heat insulating wall 23 , the right heat insulating wall 24 , the top heat insulating wall 25 , the bottom heat insulating wall 26 , and the back heat insulating wall 27 . Composition. At this time, the left part The insulating wall 23 forms a wall on the left side. The right insulating wall 24 forms the right side wall. The top insulating wall 25 forms a wall on the top side. The bottom insulating wall 26 forms a wall on the bottom side. The back insulating wall 27 forms a wall on the back side.

Each of the heat insulating walls 23 to 27 is connected and fixed by fixing members 28 and 29 or the like. At this time, as shown in FIG. 9, the top heat insulating wall 25 is formed in a shape in which the rear portion is one step lower than the front portion. Further, the machine room 30 is formed in a portion surrounded by the lower first-stage portion of the top heat insulating wall 25 and the left heat insulating wall 23 and the right heat insulating wall 24. Although not shown in detail in the machine room 30, a compressor or the like is housed, and the compressor constitutes a part of the refrigeration cycle.

Further, the heat insulating walls 23 to 27 which are the wall portions constituting the heat insulating box 11 are formed by providing a heat insulating member between the inner member and the outer member. At this time, the inner member constitutes an inner side surface of the heat insulating box 11, and the outer member constitutes an outer side surface of the heat insulating box 11. Here, the heat insulating walls 23 and 24 on the left and right sides will be described with the right heat insulating wall 24 as a representative. In the present embodiment, the left heat insulating wall 23 is formed to be bilaterally symmetrical with respect to the right heat insulating wall 24, and is configured substantially in the same manner as the right heat insulating wall 24.

As shown in FIG. 3, the right heat insulating wall 24 is configured by sandwiching a vacuum heat insulating panel 33 which is a heat insulating member between the inner member 31 and the outer member 32. The inner member 31 contains, for example, a synthetic resin such as acrylonitrile butadiene styrene (ABS) resin, and is formed into a substantially flat plate shape. The outer member 32 is formed, for example, by processing a steel sheet, and is formed in a plate shape as a whole. As also shown in FIGS. 1 and 2, the outer member 32 has a plurality of convex portions 34, 35. Further, as shown in FIG. 3, the outer peripheral portion of the outer member 32 is curved toward the storage chambers 12 to 16. On the right heat insulation wall 24 The heat dissipation pipe 36 is provided in the form of the contact protrusions 34 and 35. The heat pipe 36 forms part of the refrigeration cycle.

As shown in FIGS. 2 and 3, a circumferential convex portion 34 and an intermediate convex portion 35 are formed on the outer member 32. The circumferential convex portion 34 and the intermediate convex portion 35 function as convex portions. The circumferential convex portion 34 and the intermediate convex portion 35 protrude toward the opposite side of the inner member 31 which is the outer side of each of the storage chambers 12 to 16. As shown in FIG. 2, the circumferential convex portion 34 is formed along the peripheral edge portion of the outer member 32 so as to surround the outer peripheral edge portion of the outer member 32. The circumferential convex portion 34 includes a front side circumferential convex portion 341, a rear side circumferential convex portion 342, an upper side circumferential convex portion 343, and a lower side circumferential convex portion 344. The intermediate convex portion 35 is connected to the lower circumferential convex portion 344 of the circumferential convex portion 34, and is formed in a rectangular shape in which the vertical direction is a long side. The intermediate convex portion 35 is located on the side of the storage chambers 14 to 16 in the freezing temperature section, and is located on the right side at this time.

Further, the circumferential convex portion 34 and the intermediate convex portion 35 are formed by press-working the plate-shaped outer member 32 and the steel plate at this time. Further, the amount of protrusion of the circumferential convex portion 34 and the intermediate convex portion 35 is substantially the same, and in the case of the present embodiment, the amount of protrusion is set to, for example, about 3 mm to 5 mm. Further, the width dimension of the rectangular intermediate convex portion 35 (that is, the dimension in the front-rear direction) is set to be about one-third of the width dimension of the right heat insulating wall 24 (that is, the dimension of the refrigerator 10 in the front-rear direction).

As shown in FIG. 3, the heat pipe 36 is located inside the right heat insulating wall 24, that is, between the inner member 31 and the outer member 32, and is provided to contact the circumferential convex portion 34 and the intermediate convex portion 35. This heat pipe 36 constitutes a part of a refrigeration cycle (not shown). In the case of the present embodiment, the heat pipe 36 constitutes a part or all of the condenser, and the condenser is provided between the compressor and the cooler of the refrigeration cycle. The heat pipe 36 includes, for example, a continuous copper pipe, and heats the heat of the refrigerant by flowing the refrigerant discharged from the compressor.

As shown in FIG. 2, the heat pipe 36 is disposed so as to surround the inside of the right heat insulating wall 24. Specifically, the heat pipe 36 extends from a compressor (not shown) provided in the machine room 30, and enters the inside of the right heat insulating wall 24 from the upper end of the rear end of the right heat insulating wall 24. Further, the heat radiation pipe 36 extends downward along the rear side circumferential convex portion 342 of the circumferential convex portion 34, and then the lower end of the rear side circumferential convex portion 342 is bent forward, and further extends forward along the lower circumferential convex portion 344 of the circumferential convex portion 34. Further, the heat radiation pipe 36 extends along the peripheral edge portion of the intermediate convex portion 35 in the middle portion thereof, and extends toward the front along the lower circumferential convex portion 344 of the circumferential convex portion 34 again. Then, the heat radiation pipe 36 is bent upward at the front end of the lower side circumferential convex portion 344, and further extends upward along the front side circumferential convex portion 341. Subsequently, the heat radiation pipe 36 is bent rearward at the upper end of the front side circumferential convex portion 341, and extends rearward along the upper circumferential convex portion 343.

After the heat pipe 36 surrounds the inside of the right heat insulating wall 24, it is taken out from the upper end of the rear end of the right heat insulating wall 24 to the machine room 30 side. Subsequently, although not illustrated in detail, the heat pipe 36 is connected to one end of the heat pipe by welding or the like, and the heat pipe has the same structure as the heat pipe 36 and is provided in the left heat insulating wall 23. Further, the other end of the heat radiation pipe provided in the left heat insulating wall 23 is connected to a cooler (not shown).

Next, the internal structure of the right heat insulating wall 24 will be described with reference to FIGS. 4 and 5. Further, the heat dissipation pipes 361 to 364 described below indicate heat dissipation pipes 36 at positions different in cross section, and the heat dissipation pipes 361 to 364 constitute a connection. A heat pipe 36 is continued.

First, as seen from the rear side portion of the right heat insulating wall 24, as shown in FIG. 3, the heat dissipation pipe 361 extending downward along the rear side circumferential convex portion 342 is between the vacuum heat insulating panel 33 and the outer member 32. The inner side of the rear side peripheral convex portion 342 passes. Further, a space 38 is formed in the rear side portion of the right heat insulating wall 24 at the rear of the heat dissipation pipe 361 and the vacuum heat insulating panel 33 and at the connection portion between the right heat insulating wall 24 and the back heat insulating wall 27. Two suction pipes 39 are provided in the space 38. The suction pipe 39 is a part of a pipe that connects a cooler (not shown) to a compressor, and flows a cold refrigerant discharged from the cooler. At this time, the two suction pipes 39 are in contact with the inner side of the rear side circumferential convex portion 342 of the circumferential convex portion 34, and are fixed by, for example, a metal belt 40 such as an aluminum belt. Further, a configuration may be adopted in which a heat insulating material such as a sponge or a foaming urethane is provided in the space 38, whereby the suction pipe 39 is fixed.

Then, as seen in the middle portion of the right heat insulating wall 24, the heat radiation pipes 362, 363 pass between the vacuum heat insulating panel 33 and the outer member 32 and inside the intermediate convex portion 35. The heat dissipation pipe 362 extends upward along the rear portion of the intermediate convex portion 35. The heat dissipation pipe 363 extends downward along the front portion of the intermediate convex portion. The heat dissipation pipes 362 and 363 are disposed to contact the inner side of the intermediate convex portion 35, respectively.

When the front side portion of the right heat insulating wall 24 is viewed, the heat radiating pipe 364 passes between the vacuum heat insulating panel 33 and the outer member 32 and passes inside the front side peripheral convex portion 341. The heat dissipation pipe 364 extends upward along the front side circumferential convex portion 341. The heat pipe 364 is disposed to contact the inner side of the front side peripheral convex portion 341. at this time, As shown in FIGS. 4 and 5, the heat radiation pipes 361 to 364 are fixed to the outer member 32 by, for example, a metal tape 41 such as an aluminum tape.

Further, as shown in FIG. 5, a housing portion 42 surrounded by the inner member 31, the outer member 32, and the vacuum heat insulating panel 33 is formed in the front side portion of the right heat insulating wall 24. The accommodating portion 42 is connected to a space formed between the vacuum heat insulating panel 33 and the inner side of the front side peripheral convex portion 341. Further, the accommodating portion 42 has an insertion port 421 formed between the inner member 31 and the outer member 32. The dew prevention pipe 37 and the reinforcing member 43 are housed inside the accommodating portion 42, and a seal member 44 is provided to block the insertion port 421. At this time, the dew prevention pipe 37 is inserted into the accommodating portion 42 through the insertion port 421.

The dew prevention pipe 37 is a part of a pipe that connects the compressor to the heat pipe 36 or between the heat pipe 36 to the cooler. The dew prevention tube 37 includes a different part from the heat dissipation tube 36. In the dew prevention pipe 37, similarly to the heat dissipation pipe 36, a refrigerant that has been compressed by a compressor to be in a high temperature state flows. Thereby, the periphery of the opening of the heat insulating box 11 is heated, thereby suppressing the condensation on the periphery of the opening.

The reinforcing member 43 includes, for example, a steel plate or the like, and strengthens the front end edge portion of the right heat insulating wall 24 . The reinforcing member 43 is curved along the inner side surface of the front end portion of the outer member 32 to form a so-called U shape in which the rear side is open. Further, the reinforcing member 43 extends in the vertical direction along the front end edge portion of the right heat insulating wall 24. Further, the reinforcing member 43 is fixed to the outer member 32 by a screw or the like, which is not shown.

The sealing member 44 is formed by pressing or extruding a material having a lower thermal conductivity than the outer member 32, such as a synthetic resin or a hard rubber. Shaped. The sealing member 44 is configured to be continuous in the vertical direction in substantially the same cross-sectional shape. The sealing member 44 holds the dew prevention pipe 37 and blocks the insertion port 421 to join the inner member 31 and the outer member 32.

Specifically, the sealing member 44 has a holding portion 441 at one end. The holding portion 441 holds the dew prevention pipe 37 in a wrapped manner. At this time, a part of the dew prevention pipe 37 is exposed from the holding portion 441 and contacts the reinforcing member 43. That is, the dew prevention pipe 37 directly contacts the reinforcing member 43 and is in indirect contact with the outer member 32 via the reinforcing member 43 as well. Therefore, the heat of the dew prevention pipe 37 is transmitted to the outer member 32 via the reinforcing member 43. Thereby, the dew prevention pipe 37 can indirectly heat the outer member 32.

Further, the sealing member 44 has a closing portion 442 and claw portions 443 and 444 on the side opposite to the holding portion 441. The sealing member 44 sandwiches the inner member 31 by the blocking portion 442 and the claw portion 443, and the outer member 32 is sandwiched by the blocking portion 442 and the claw portion 444, thereby being fixed to the inner member 31 and the outer member 32. Further, the sealing member 44 has an elastic deformation portion 445 between the holding portion 441 and the closing portion 442. The elastic deformation portion 445 is elastically deformed in the thickness direction of the vacuum heat insulating panel 33. Thereby, the sealing member 44 can allow an error in the thickness dimension of the vacuum heat insulating panel 33 generated at the time of manufacture of the vacuum heat insulating panel 33.

The vacuum heat insulating panel 33 is formed in a plate shape, and is adhered and fixed to the inner member 31 and the outer member 32 by a resin adhesive such as a hot melt. At this time, as shown in FIG. 3, the vacuum heat insulating panel 33 is adhered and fixed to the outer member 32 in a state away from the circumferential convex portion 34 and the intermediate convex portion 35. Moreover, the vacuum heat insulating panel 33 is disposed away from the heat pipe 36 and the metal strip 41, The heat pipe 36 and the metal strip 41 are contacted.

As shown in FIG. 4 and FIG. 5, the vacuum heat insulating panel 33 is formed by accommodating the core material 45 in the bag body 46, and evacuating the inside thereof by vacuum evacuation. The core material 45 includes, for example, a laminate in which inorganic fibers such as glass wool are formed into a plate shape in advance. Further, the bag body 46 is formed in a bag shape by superposing two sheets of a film having gas barrier properties and welding the periphery thereof. The bag body 46 includes two laminated films having different characteristics, and in this case, the inner laminated film 461 and the outer laminated film 462 are included.

The inner build-up film 461 and the outer build-up film 462 are formed by sandwiching a layer for obtaining gas barrier properties with a resin film, a metal layer at this time, and a plurality of resin films. The inner build-up film 461 and the outer build-up film 462 have different characteristics depending on whether the metal layer for obtaining gas barrier properties is an aluminum foil layer or an aluminum vapor-deposited layer. Here, the difference between the aluminum foil layer and the aluminum vapor deposition layer will be described. In general, since the aluminum vapor-deposited layer evaporates aluminum into a film which becomes a base material in a vacuum, the film thickness can be reduced as compared with the aluminum foil layer. Therefore, the aluminum vapor-deposited layer has lower thermal conductivity and superior heat insulating performance than the aluminum foil layer. On the other hand, the aluminum foil layer is formed by laminating and laminating an aluminum foil formed by rolling using two sheets of a film, and thus the film thickness is increased as compared with the aluminum vapor-deposited layer. Therefore, the aluminum foil layer is excellent in gas barrier properties as compared with the aluminum vapor-deposited layer, and is excellent in durability.

In the present embodiment, the inner laminated film 461 on the side of the inner member 31 has an aluminum vapor-deposited layer as a metal layer for obtaining gas barrier properties. On the other hand, the outer laminated film 462 on the side of the outer member 32 has an aluminum foil layer as A metal layer used to obtain gas barrier properties. At this time, the surface of the vacuum heat insulating panel 33 on the heat radiation pipe 36 side has an aluminum foil layer excellent in durability. Therefore, it is possible to alleviate the damage of the vacuum heat insulating panel 33 due to the contact with the heat radiation pipe 36. Further, the surface of the vacuum heat insulating panel 33 on the storage chambers 12 to 16 side has an aluminum vapor-deposited layer having a low thermal conductivity and excellent heat insulating performance. Therefore, the so-called heat bridge phenomenon in which the cold air of the storage chambers 12 to 16 is transmitted to the surface of the bag body 46 of the vacuum heat insulating panel 33 and returned from the inner member 31 side to the outer member 32 side is suppressed.

In the bag body 46, the inner build-up film 461 and the outer build-up film 462 are superposed on each other, and the periphery thereof is welded to form a bag shape. At this time, the ear portion 463 for welding is formed in the outer edge portion of the vacuum heat insulating panel 33 so that the periphery of the bag body 46 protrudes from the core material 45. The ear portion 463 is folded over to the side of the outer member 32 and is housed inside the front side peripheral convex portion 341 which becomes the front end edge portion of the right heat insulating wall 24 . Further, although not illustrated in detail, the ear portion 463 is fixed along the outer surface of the outer member 32 side by the surface of the laminated film 462 by an adhesive or a metal tape. At this time, the ear portion 463 is away from the heat dissipation tube 36 and the metal strip 41. Moreover, the ears 463 are also remote from the outer member 32. Therefore, the step portion 464 generated by folding the ear portion 463 does not contact the outer member 32.

According to this configuration, the heat insulating wall forming the opening of the heat insulating box 11, that is, the left heat insulating wall 23, the right heat insulating wall 24, the top heat insulating wall 25, and the bottom heat insulating wall 26, at least the left and right heat insulation The walls 23 and 24 have a circumferential convex portion 34 and an intermediate convex portion 35 which are located on the outer member 32 and protrude outward from the respective storage chambers 12 to 16. Further, a heat pipe is disposed between the left and right heat insulating walls 23 and 24 and between the outer member 32 and the inner member 31. 36. The heat pipe 36 contacts the inner side of the circumferential convex portion 34 and the intermediate convex portion 35, and constitutes a part of the refrigeration cycle.

According to this, for example, when the right side surface of the refrigerator 10 and the outer side surface of the right heat insulating wall 24 are in contact with the wall of the room or the like, the circumferential convex portion 34 and the intermediate convex portion 35 contact the wall of the room, thereby not A portion where the peripheral convex portion 34 and the intermediate convex portion 35 exist forms a space with the wall of the room. That is, the outer side surface of the right heat insulating wall 24 of the refrigerator 10 does not entirely contact the wall of the room, thereby securing a space for heat dissipation around the heat pipe 36. Therefore, even when the refrigerator 10 is disposed such that the right heat insulating wall 24 forming the right side thereof approaches or contacts the wall of the room or the like, it is possible to suppress the heat from remaining around the heat pipe 36 and the heat radiation efficiency is lowered. Further, the same effect as described above can be obtained for the left heat insulating wall 23 having the same structure as that of the right heat insulating wall 24.

The refrigerator 10 is provided with a vacuum heat insulating panel 33 as a heat insulating member of the right heat insulating wall 24 . Further, the vacuum heat insulating panel 33 is adhered and fixed to the outer member 32 in a state away from the circumferential convex portion 34 and the intermediate convex portion 35. Accordingly, the vacuum heat insulating panel 33 is prevented from coming into contact with the heat radiation pipe 36, and the heat radiation pipe 36 is provided in contact with the circumferential convex portion 34 and the intermediate convex portion 35. Therefore, the vacuum heat insulating panel 33 is prevented from being damaged by contact with the heat radiation pipe 36. As a result, the vacuum heat insulating panel 33 can maintain high heat insulating performance.

The heat pipe 36 is located between the vacuum heat insulating panel 33 and the circumferential convex portion 34 and the intermediate convex portion 35, and is fixed to the outer member 32 by the metal belt 41. Further, the vacuum heat insulating panel 33 is provided away from the heat radiation pipe 36 and the metal belt 41. According to this, the heat generated by the heat pipe 36 can be suppressed from being transmitted directly or via the metal strip 41. The case of the vacuum insulation panel 33 is delivered. Therefore, the inflow of heat into the storage chambers 12 to 16 can be suppressed, and the inflow of the heat into the storage chambers 12 to 16 is transmitted by the heat generated by the heat dissipation tubes 36 to the surface of the vacuum heat insulating panel 33 and returned to the storage chambers 12 to 16 Caused by the so-called thermal bridge phenomenon on the side.

The heat dissipation pipe 36 is provided along the inner side of the circumferential convex portion 34 and the intermediate convex portion 35. Therefore, in the manufacture of the refrigerator 10, the heat dissipation pipe 36 can be disposed along the circumferential convex portion 34 and the intermediate convex portion 35. As a result, compared with the case where the outer member 32 does not have the circumferential convex portion 34 and the intermediate convex portion 35 and is simply a flat plate shape, the attachment of the heat dissipation pipe 36 to the outer member 32 is facilitated, and workability is improved.

The circumferential convex portion 34 and the intermediate convex portion 35 are formed by press working the plate-shaped outer member 32. Therefore, the outer member 32 is increased in strength at the peripheral portion of the circumferential convex portion 34 and the intermediate convex portion 35 due to work hardening due to press working. Further, since the outer member 32 forms the circumferential convex portion 34 and the intermediate convex portion 35, the second moment of the entire outer member 32 increases. As a result, the strength of the outer member 32 as a whole with respect to the bending direction increases.

A front side peripheral convex portion 341 which is a part of the circumferential convex portion 34 is provided on the right heat insulating wall 24 and the front end edge portion which is the end edge portion on the opening side of the heat insulating box body 11. According to this, the end edge portion on the opening side of the heat insulating box 11 which is particularly required to be connected to the other heat insulating wall and the front end edge portion of the right heat insulating wall 24 can be increased in strength.

A reinforcing member 43 is provided on the inner side of the front side peripheral convex portion 341 along the front end edge portion of the right heat insulating wall 24. Thereby, the strength of the front end edge portion of the right heat insulating wall 24 can be further increased.

The vacuum heat insulating panel 33 is a bag body having a core material 45 and a core material 45. 46 constitutes. The bag body 46 has an adhesive ear portion 463 that protrudes around the core material 45. The ear portion 463 is folded over to the side of the outer member 32 and is housed to the front side peripheral convex portion 341 of the circumferential convex portion 34. At this time, the step portion 464 generated by folding the ear portion 463 does not contact the outer member 32. Therefore, a gap is not generated between the outer member 32 and the vacuum heat insulating panel 33 due to the step portion 464. Therefore, the adhesion of the outer member 32 to the vacuum heat insulating panel 33 can be satisfactorily ensured. Further, the shape of the step portion 464 does not float on the outer member 32 because the step portion 464 contacts the outer member 32. Therefore, the appearance of the outer member 32, that is, the design of the refrigerator 10 can be well ensured.

The vacuum heat insulating panel 33 is provided such that the inner laminated film 461 including the aluminum deposited layer is the inner member 31 side, and the outer laminated film 462 including the aluminum foil layer is the outer member 32 side. According to this, the so-called thermal bridge phenomenon in which the cold air returns to the outer member 32 side of the storage chambers 12 to 16 can be effectively suppressed by the inner laminated film 461 having excellent heat insulating properties. Further, the outer laminated film 462 having excellent durability can effectively protect the vacuum heat insulating panel 33 from damage due to contact of the heat radiation pipe 36 or the like.

The heat pipe 36 is also disposed inside the intermediate convex portion 35, and the intermediate convex portion 35 is located on the side of the storage chambers 14 to 16 in the freezing temperature section. Accordingly, the sides of the storage chambers 14 to 16 of the freezing temperature section having a lower cooling temperature can be heated by the heat of the heat radiation pipe 35. Therefore, even when the vacuum heat insulating panel 33 is damaged and the heat insulating performance is lowered, it is possible to suppress the outer member 32 from dew condensation around the outer member 32 due to the cooling of the cold air in the storage chambers 14 to 16 in the freezing temperature section.

Moreover, the thickness of the heat insulating walls 23 and 24 on the left and right sides of the above effect is It is especially effective in cases of 35 mm or less. In the present embodiment, the thickness of the vacuum heat insulating panel 33 is about 20 mm, and the total thickness of the inner member 31 and the outer member 32 is about 1.5 mm. Therefore, the total thickness of the heat insulating walls 23 and 24 is 21.5 mm. Thus, the heat insulating walls 23 and 24 on the left and right sides are formed to have a more effective thickness of 25 mm or less.

(Second embodiment)

Next, a second embodiment will be described with reference to Fig. 6 .

In the second embodiment, instead of the intermediate convex portion 35 of the first embodiment, the first intermediate convex portion 47 and the second intermediate convex portion 48 are formed on the outer member 32. The width dimension (i.e., the dimension in the front-rear direction) of the first intermediate convex portion 47 and the second intermediate convex portion 48 is set to be slightly larger than the outer diameter of the heat dissipation pipe 36. Further, at this time, the heat radiating pipe 362 extending upward passes through the inner side of the first intermediate convex portion 47, and the heat radiating pipe 363 extending downward passes through the inner side of the second intermediate convex portion 48.

According to this, the same effects as those of the first embodiment can be obtained. Further, for example, when the outer side surface of the right heat insulating wall 24 of the refrigerator 10 is placed in contact with a wall or the like of the room, a space is also formed between the first intermediate convex portion 47 and the second intermediate convex portion 48. Therefore, it is possible to ensure a larger heat dissipation space of the heat dissipation pipes 364, 365. Therefore, even when the wall portion of the heat insulating box 11 is placed close to or in contact with a wall or the like of the room, it is possible to more effectively suppress the heat from remaining around the heat pipe 36 and the heat radiation efficiency is lowered.

(Third embodiment)

Next, a third embodiment will be described with reference to Fig. 7 .

In the third embodiment, the circumferential convex portion 34 of the first embodiment is replaced. The intermediate convex portion 35 is formed with a circumferential concave portion 49 as a concave portion and an intermediate concave portion 50 formed on the outer member 32. The circumferential recessed portion 49 and the intermediate recessed portion 50 are formed so as to be recessed toward the inner member 31 side of the outer casing 32 and toward the inside of each of the storage chambers 12 to 16. At this time, the circumferential recessed portion 49 includes a front side circumferential concave portion 491 and a rear side circumferential concave portion 492 and an upper side circumferential concave portion and a lower side circumferential concave portion (not shown). The front side peripheral recessed portion 491, the rear side peripheral recessed portion 492, the upper side peripheral recessed portion, and the lower side peripheral recessed portion are provided along the peripheral edge portion of the outer member 32 so as to surround the outer member 32, similarly to the circumferential convex portion 34. Further, the intermediate concave portion 50 is connected to the lower circumferential concave portion of the circumferential concave portion 49 in the same manner as the intermediate convex portion 35, and is formed in a rectangular shape in which the vertical direction is a long side. The intermediate recess 50 is also located on the side of the storage compartments 14-16 of the freezing temperature section, and is located to the right.

Further, in the vacuum heat insulating panel 33, the circumferential recessed portion 51 and the intermediate recessed portion 52 are formed in such a manner that the surface on the side of the outer member 32 is recessed. The circumferential recessed portion 51 and the intermediate recessed portion 52 are formed simultaneously with the molding of the core material 45 by, for example, a mold. At this time, the circumferential recessed portion 51 is formed along the shape of the circumferential recessed portion 49, and includes a front side peripheral recessed portion 511 and a rear side peripheral recessed portion 512, and an upper peripheral recessed portion and a lower peripheral recessed portion (not shown). Advance. Moreover, the intermediate recess 52 is formed along the shape of the intermediate recess 50.

The heat dissipation pipe 361 is located between the rear side circumferential recessed portion 512 of the vacuum heat insulating panel 33 and the rear side circumferential concave portion 492 of the outer member 32, and is disposed to contact the inner side of the rear side circumferential recessed portion 492. Further, the heat pipe 362 is located between the intermediate recess 52 of the vacuum heat insulating panel 33 and the intermediate recess 50 of the outer member 32, and is disposed to contact the rear inner side of the intermediate recess 50. Further, the heat pipe 363 is located in the true The intermediate recessed portion 52 of the hollow heat insulating panel 33 and the intermediate recessed portion 50 of the outer member 32 are disposed to contact the front inner side of the intermediate recessed portion 50. Further, the heat dissipation pipe 364 is located between the front side circumferential recessed portion 511 of the vacuum heat insulating panel 33 and the front side circumferential concave portion 491 of the outer member 32, and is provided to contact the inner side of the front side circumferential recessed portion 491.

Similarly to the first embodiment, the heat dissipation pipe 36 is fixed by a metal belt 41 such as an aluminum belt. Further, the vacuum heat insulating panel 33 is adhered and fixed to the inner member 31 and the outer member 32 in a state away from the circumferential recess 49 and the intermediate recess 50. Further, the vacuum heat insulating panel 33 is away from the heat radiation pipe 36 and the metal belt 41.

According to this configuration, the same effects as those of the first embodiment can be obtained. Further, it is not necessary to provide the outer member 32 with a convex portion that protrudes toward the outside of the storage chambers 12 to 16. Therefore, even if the heat dissipation pipe 36 is disposed inside the right heat insulating wall 24, the increase in the thickness of the right heat insulating wall 24 can be suppressed. As a result, it is possible to achieve space saving as the entire refrigerator 10.

(Fourth embodiment)

Next, a fourth embodiment will be described with reference to Fig. 8 .

In the fourth embodiment, the first intermediate recess 53 and the second intermediate recess 54 are formed on the outer member 32 instead of the intermediate recess 50 of the third embodiment. The width dimension (i.e., the dimension in the front-rear direction) of the first intermediate recess 53 and the second intermediate recess 54 is set to be slightly larger than the outer diameter of the heat pipe 36. At this time, the heat pipe 362 passes through the inner side of the first intermediate recess 53. Moreover, the heat pipe 363 passes through the inner side of the second intermediate recess 54. Further, in place of the intermediate recessed portion 52 in the third embodiment, the first intermediate recessed portion 55 and the second intermediate recessed portion 56 are formed in the vacuum heat insulating panel 33. The first The intermediate recessed portion 55 and the second intermediate recessed portion 56 are formed along the first intermediate recessed portion 53 and the second intermediate recessed portion 54, respectively. Further, the vacuum heat insulating panel 33 is away from the heat dissipation pipe 36 and the metal belt 41, and is also away from the circumferential recess portion 49, the first intermediate recess portion 53, and the second intermediate recess portion 54.

According to this configuration, the same effects as those of the third embodiment can be obtained. Further, it is located inside the right heat insulating wall 24 and is filled between the first intermediate recess 53 and the second intermediate recess 54 by the vacuum heat insulating panel 33. Therefore, even in the case where the concave portion is formed in the vacuum heat insulating panel 33, the portion where the vacuum heat insulating panel 33 is thinned can be suppressed as much as possible. As a result, the deterioration of the heat insulating performance as the entire right heat insulating wall 24 can be suppressed as much as possible.

(Fifth Embodiment)

Next, a fifth embodiment will be described with reference to Figs. 9 and 10 .

In the fifth embodiment, the heat insulating box 11 of the refrigerator 10 has the back side convex portion 60 as a convex portion. The back side convex portion 60 is a wall portion on the back side where the opening of the heat insulating box 11 is not formed, that is, is provided on the back heat insulating wall 27 along the peripheral edge portion of the back heat insulating wall 27. As shown in FIG. 9, the back side convex portion 60 includes a first back side convex portion 601 and a second back side convex portion 602. The first back side convex portions 601 are respectively provided on both left and right edges of the back heat insulating wall 27, and extend downward from the machine room 30 side. The second back side convex portion 602 is provided at a lower portion of the back heat insulating wall 27, and extends in the left-right direction and connects the lower end portions of the left and right first back side convex portions 601.

Further, as shown in FIG. 10, the back heat insulating wall 27 has a vacuum heat insulating panel as a heat insulating member between the inner member 61 and the outer member 62, similarly to the left and right heat insulating walls 23 and 24 of the above-described respective embodiments. 63. Vacuum insulation surface The plate 63 is adhered and fixed to the inner member 61 and the outer member 62 by a resin adhesive such as hot melt adhesive. Each of the inner member 61, the outer member 62, and the vacuum heat insulating panel 63 is configured in substantially the same manner as the inner member 31, the outer member 32, and the vacuum heat insulating panel 33 of the above-described respective embodiments.

The back side convex portion 60 is formed to be located outside the outer member 62 and protrudes outward from each of the storage chambers 12 to 16 . At this time, the back side convex portion 60 is formed in a rectangular shape, specifically, in a trapezoidal shape. The back side convex portion 60 is formed by press working the outer member 62. The vacuum heat insulating panel 63 is provided at a position that does not overlap with the back side convex portion 60. Located on the side of the vacuum heat insulating panel 63 and between the inner member 61 and the outer member 62, a soft tape 64 on the front side of the back side convex portion 60 is provided. The flexible tape 64 is, for example, a synthetic rubber containing a continuous cell, and is excellent in flexibility, stretchability, heat insulating properties, and water repellency.

A heat dissipation pipe 65 is provided between the inner member 61 and the outer member 62 in contact with the inner side of the back side convex portion 60. The heat pipe 65 is fixed to the outer member 62 by a metal belt 66 such as an aluminum tape. At this time, the amount of protrusion of the back side convex portion 60 is set to be smaller than the diameter of the heat dissipation tube 65. Therefore, the heat dissipation pipe 65 is pressed against the flexible tape 64 via the metal tape 66. Moreover, the width dimension of the back side convex portion 60 is set to be slightly larger than the diameter of the heat dissipation pipe 65. Further, the heat pipe 65 and the metal tape 66 are away from the vacuum heat insulating panel 63. That is, the heat radiation pipe 65 and the metal belt 66 do not contact the vacuum heat insulating panel 63.

The heat radiation pipe 65 also constitutes a part of the refrigeration cycle similarly to the heat radiation pipe 36 of each of the above embodiments. The heat pipe 65 is disposed in such a manner as to enter the back heat insulating wall 27 from the machine room 30 as shown in FIG. 9, and surrounds the inside of the back heat insulating wall 27 along the back side convex portion 60, with Thereafter, it is taken out from the back heat insulating wall 27 to the outside of the machine room 30. Further, although the both end portions of the heat radiation pipe 65 are not shown in detail, the compressor connected to the machine room 30 is connected to the heat radiation pipe 36 or the like.

According to the present embodiment, the same effects as those of the first embodiment described above can be mainly obtained for the back heat insulating wall 27 of the refrigerator 10. That is, even when the back surface of the refrigerator 10, that is, the outer side surface of the back heat insulating wall 27 is placed in contact with the wall of the room or the like, the back side convex portion 60 contacts the wall of the room, so that the portion of the back side convex portion 60 does not exist. A space is formed between the walls of the room. Therefore, the outer side surface of the back heat insulating wall 27 of the refrigerator 10 does not entirely contact the wall of the room, thereby securing a space for heat dissipation of the heat pipe 65. Therefore, even when the refrigerator 10 is disposed such that the back heat insulating wall 27 on the back side thereof is placed close to or in contact with the wall of the room or the like, it is possible to suppress the heat from remaining around the heat radiation pipe 65 and the heat radiation efficiency is lowered.

Further, the heat dissipation pipe 65 is housed inside the back side convex portion 60. Therefore, at the time of manufacture of the refrigerator 10, the heat radiation pipe 65 can be arrange|positioned along the back side convex part 60. As a result, compared with the case where the outer member 62 does not have the back side convex portion 60 and is simply flat, the heat dissipation tube 65 is easily attached to the outer member 62, and workability is improved.

Further, the back side convex portion 60 is formed by press working the plate-shaped outer member 62. Therefore, the outer member 62 is increased in strength at the peripheral portion of the back side convex portion 60 due to work hardening due to press working. Further, by forming the back side convex portion 60, the second moment of the cross section of the entire outer member 62 is increased, and as a result, the strength of the outer member 62 as a whole with respect to the bending direction is increased.

Further, the back side convex portion 60 is formed in a trapezoidal shape. Therefore, it can be bigger The heat dissipation area of the heat dissipation pipe 65 is ensured, and as a result, the heat dissipation efficiency of the heat dissipation pipe 65 can be improved.

Further, in the present embodiment, the outer member 62 may have a recess that is recessed toward the inner member 61 side instead of the back side convex portion 60.

(Sixth embodiment)

Next, a sixth embodiment will be described with reference to Fig. 11 .

In the sixth embodiment, the shape of the back side convex portion 60 is different from that of the fifth embodiment described above. That is, the back side convex portion 60 of the sixth embodiment is not formed in a trapezoidal shape but is formed in a substantially semicircular shape along a part of the outer diameter of the heat dissipation pipe 65. According to this, it is easy to arrange the heat radiation pipe 65 on the inner side of the back side convex portion 60, and it is difficult to deviate the position after the arrangement. Therefore, the mounting of the heat radiation pipe 65 with respect to the outer member 62 becomes easy, and as a result, workability is further improved.

(Seventh Embodiment)

Next, a seventh embodiment will be described with reference to Figs. 12 and 13 .

In the seventh embodiment, the machine room 30 is provided at a lower portion of the rear side of the heat insulating box 11. Although not shown in detail, in the machine room 30, a compressor is provided similarly to each of the above-described embodiments, and this compressor constitutes a part of the refrigeration cycle. At this time, the first back side convex portions 601 are respectively located at both left and right edge portions of the back heat insulating wall 27, and extend upward from the machine room 30 side. The second back side convex portion 602 is located at an upper portion of the back heat insulating wall 27 and extends in the left-right direction and connects the upper end portions of the left and right first back side convex portions 601. A heat dissipation pipe 65 is disposed in the back side convex portion 60.

Further, in the seventh embodiment, the opening of the heat insulating box 11 is not formed. The back heat insulating wall 27 of the mouth is provided with a convex portion 60, and the convex portion and the concave portion are not provided in the wall portion forming the opening of the heat insulating box 11. That is, in the seventh embodiment, the convex portions 34, 35, 47, 48 or the concave portions 49, 50, 53, 54 and the like as in the above-described respective embodiments are not provided on the left and right heat insulating walls 23, 24.

Therefore, in the seventh embodiment, the outer members 32 of the left and right heat insulating walls 23 and 24 are formed substantially flat without having a convex portion or a concave portion. At this time, in the present embodiment, as shown in FIG. 13, the convex portions 34, 35, 47, 48 or the concave portions 49, 50, 53, 54 are replaced by the vacuum heat insulating panel 33 instead of the above-described respective embodiments. A recessed portion 331 is formed on the side of the member 32. The heat dissipation pipe 36 is disposed along the recessed portion 331.

According to this configuration, the same operational effects as those of the fifth embodiment described above can be obtained. Further, in the present embodiment, the machine room 30 is provided at a lower portion of the rear side of the heat insulating box 11. As a result, the heat radiated from the compressor disposed in the machine room 30 flows through the space between the back heat insulating wall 27 formed by the back side convex portion 60 and the wall surface of the room, and is radiated upward from the machine room 30. Therefore, according to this configuration, it is not necessary to newly provide a member for heat dissipation of the compressor, and heat generated in the compressor can be efficiently dissipated. Further, the outer side surfaces of the right and left side surfaces of the refrigerator 10, that is, the outer side surfaces of the left and right heat insulating walls 23 and 24 are formed to be flat. Therefore, the appearance of the left and right side surfaces in the installed state of the refrigerator 10 can be improved.

Further, although not illustrated in detail, in each of the embodiments, the left heat insulating wall 23 is configured substantially in the same manner as the right heat insulating wall 24 is bilaterally symmetrical. Further, a heat dissipation pipe corresponding to the heat dissipation pipe 36 is also provided in the left heat insulating wall 23.

A structure may be adopted in which a convex portion or a concave portion is provided on the top heat insulating wall 25, and a heat radiating tube is disposed inside the convex portion or the concave portion. At this time, a space is secured between the outer surface of the top heat insulating wall 25, which is the upper surface of the refrigerator 10, and the ceiling of the room. Therefore, the user can configure the refrigerator 10 without consciously securing a heat dissipation space to the heat pipe.

The heat insulating box 11 is not limited to having an opening on the front surface, and may be, for example, a structure having an opening on the upper surface. At this time, the heat pipe, the convex portion, or the concave portion may be provided on the surrounding heat insulating walls constituting the upper surface opening.

For the heat insulating members of the heat insulating walls 23 to 27, a foaming urethane or the like may be used instead of the vacuum heat insulating panel, and a vacuum heat insulating panel and a foaming urethane may be used in combination.

The heat insulating box 11 is not limited to being constructed by combining the divided heat insulating walls 23 to 27. For example, the heat insulating box 11 may have a configuration in which an inner box constituting a surface on the side of the storage chamber 12 to 16 is formed in a single box shape, and a heat insulating member and an outer box are provided on the outer side.

In the bag body 46 of the vacuum heat insulating panel 33 in each embodiment, the inner laminated film 461 may have an aluminum foil layer. Similarly, the outer laminated film 462 may have a structure in which an aluminum deposited layer is used. Further, the inner build-up film 461 and the outer build-up film 462 may have a structure of either an aluminum vapor-deposited layer or an aluminum foil layer, or may be formed by laminating a plurality of layers of an aluminum vapor-deposited layer and an aluminum foil layer.

In the case of the bag body 46, the metal layer for obtaining gas barrier properties is preferably aluminum, but is not limited thereto. For example, titanium, chromium, copper, gold, or the like may be used. At this time, the formation of the metal layer is not limited to the lamination of the metal foil or The vapor deposition can be formed, for example, by plating or the like. Further, the layer for obtaining gas barrier properties is not limited to the above metal layer, and for example, a layer in which an oxide such as silica or alumina is vapor-deposited may be used.

According to the configuration of the embodiment described above, for example, when the wall portion forming the side surface of the heat insulating box is placed in contact with the wall of the room or the like, the convex portion contacts the wall of the room, and the portion where the convex portion is not present Form a space between the walls of the room. Therefore, the side of the refrigerator does not entirely contact the wall of the room, thereby securing a space for heat dissipation around the heat pipe. Therefore, even when the wall portion of the heat insulating box is placed close to or in contact with the wall of the room or the like, it is possible to suppress the heat from remaining around the heat pipe and the heat radiation efficiency is lowered.

The embodiments of the present invention have been described, but are not intended to limit the scope of the invention. The present invention may be embodied in a variety of other forms, and various omissions, substitutions and changes may be made without departing from the scope of the invention. The invention or its modifications are intended to be included within the scope and spirit of the invention and are included in the scope of the invention disclosed herein.

10‧‧‧ refrigerator

11‧‧‧Insulation box

12‧‧‧Refrigerator

13‧‧ ‧ vegetable room

14‧‧‧ ice making room

15‧‧‧Small freezer

16‧‧‧Freezer

17, 18‧‧‧Insulated doors for cold rooms

19‧‧ ‧ insulated door for vegetable room

20‧‧‧Insulated door for ice making room

21‧‧‧Insulated door for small freezer

22‧‧‧Insulated door for freezer

23‧‧‧ Left insulation wall

24‧‧‧Right insulation wall

25‧‧‧Top insulation wall

26‧‧‧Bottom insulation wall

27‧‧‧Back insulation wall

28, 29‧‧‧Fixed components

30‧‧‧ machine room

31, 61‧‧‧ internal components

32, 62‧‧‧External components

33, 63‧‧‧ Vacuum insulated panels

34‧‧‧ Weekly convex

35‧‧‧Intermediate convex

36, 65, 361, 362, 363, 364‧‧ ‧ heat pipe

37‧‧‧Anti-lift tube

38‧‧‧ Space

39‧‧‧Sucking tube

40, 41, 66‧‧‧ metal strips

42‧‧‧ Housing Department

43‧‧‧Strength components

44‧‧‧ Sealing members

45‧‧‧ core material

46‧‧‧ bag body

47‧‧‧First intermediate convex

48‧‧‧Second intermediate convex

49‧‧‧ Weekly recess

50‧‧‧Intermediate recess

51‧‧‧ Weekly recess

52‧‧‧Intermediate recess

53‧‧‧First intermediate recess

54‧‧‧Second intermediate recess

55‧‧‧First intermediate recess

56‧‧‧Second intermediate recess

60‧‧‧Back side convex

64‧‧‧Soft Belt

171, 181‧‧‧ Hinges

331‧‧‧Depression

341‧‧‧ front side convex

342‧‧‧Back side convex

343‧‧‧Upper side convex

344‧‧‧Lower side convex

421‧‧‧ insertion port

441‧‧‧ Keeping Department

442‧‧‧ Blocking Department

443, 444‧‧‧ claws

445‧‧‧Elastic deformation department

461‧‧‧Inside laminated film

462‧‧‧Outer laminated film

463‧‧ Ears

464‧‧‧Steps Department

491‧‧‧ front side recess

492‧‧‧ Back side recess

511‧‧‧ front side recess

512‧‧‧ rear side recess

601‧‧‧First back side convex

602‧‧‧Second dorsal convex

Fig. 1 is a perspective view showing the refrigerator of the first embodiment as viewed from the right front side.

Fig. 2 is a perspective view showing the heat insulating box as viewed from the right front side.

Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2;

Fig. 4 is a cross-sectional view showing the periphery of the intermediate convex portion in Fig. 3 in an enlarged manner.

Fig. 5 is a cross-sectional view showing the periphery of the front side peripheral convex portion in Fig. 3 in an enlarged manner.

Fig. 6 is a view corresponding to Fig. 3 of the second embodiment.

Fig. 7 is a view corresponding to Fig. 3 of the third embodiment.

Fig. 8 is a view corresponding to Fig. 3 of the fourth embodiment.

FIG. 9 is a perspective view showing the heat insulating box of the refrigerator according to the fifth embodiment as seen from the right rear side.

Fig. 10 is a cross-sectional view taken along line B-B of Fig. 9.

Fig. 11 is a view corresponding to Fig. 10 of the sixth embodiment.

Fig. 12 is a view corresponding to Fig. 9 of the seventh embodiment.

Figure 13 is a cross-sectional view taken along line C-C of Figure 12 .

10‧‧‧ refrigerator

11‧‧‧Insulation box

12‧‧‧Refrigerator

13‧‧ ‧ vegetable room

14‧‧‧ ice making room

15‧‧‧Small freezer

16‧‧‧Freezer

17, 18‧‧‧Insulated doors for cold rooms

19‧‧ ‧ insulated door for vegetable room

20‧‧‧Insulated door for ice making room

21‧‧‧Insulated door for small freezer

22‧‧‧Insulated door for freezer

34‧‧‧ Weekly convex

35‧‧‧Intermediate convex

171, 181‧‧‧ Hinges

Claims (11)

A refrigerator comprising: a heat insulating box having a storage compartment and an opening connected to the storage compartment; and a freezing cycle for cooling the storage compartment, wherein the wall portion of the heat insulating box is formed by the inner member and the outer member At least one of the wall portions has a convex portion that is located outward of the storage member and that is recessed toward the inside of the storage chamber, and the outer member is recessed toward the inner side of the storage chamber. A heat dissipation pipe is disposed between the inner member and the inner member to contact the convex portion or the concave portion, and the heat dissipation pipe constitutes a part of the refrigeration cycle. The refrigerator according to claim 1, comprising a vacuum heat insulating panel as the heat insulating member, wherein the vacuum heat insulating panel is adhered to and fixed to the outer member in a state away from the convex portion or the concave portion. The refrigerator according to claim 2, wherein the heat dissipation pipe is located between the convex portion or the concave portion and the vacuum heat insulating panel, and is fixed to the outer member by a metal belt, and the vacuum heat insulating panel is away from The heat pipe and the metal strip. The refrigerator according to claim 1, wherein the convex portion is provided on at least one of the wall portions forming the opening. The refrigerator according to claim 4, wherein the convex portion is provided at least at an edge portion of the wall portion. The refrigerator according to claim 5, wherein the convex portion at the end edge portion is provided with a reinforcing member along the end edge portion. The refrigerator according to claim 5, wherein the vacuum heat insulating panel is configured to have a core material and a bag body for accommodating the core material, and the bag body has an ear portion for sticking to the periphery of the core material. The ear portion is folded over to the outer member side and housed in the convex portion of the end edge portion. The refrigerator according to any one of claims 1 to 7, wherein the convex portion is provided on a wall portion on a back side where the opening is not formed. The refrigerator according to any one of claims 1 to 3, wherein the convex portion is provided on a wall portion on the back side where the opening is not formed, and is not provided in a wall portion forming the opening. The refrigerator according to claim 8, wherein a lower portion of the heat insulating box includes a machine chamber in which a compressor is provided, and the compressor constitutes a part of the refrigeration cycle. The refrigerator according to claim 9, wherein the lower portion of the heat insulating box includes a machine chamber in which a compressor is provided, and the compressor constitutes a part of the refrigeration cycle.