WO2013084648A1

WO2013084648A1 - Refrigerator

Info

Publication number: WO2013084648A1
Application number: PCT/JP2012/078843
Authority: WO
Inventors: 石橋　郁夫; 佐伯　友康; 昌則安部; 勝志住廣
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: 2011-12-06
Filing date: 2012-11-07
Publication date: 2013-06-13
Also published as: CN103988034A; TWI519749B; EP2789938A1; JP6091762B2; EP2789938B1; JP2013139981A; EP2789938A4; CN103988034B; TW201341739A

Abstract

A refrigerator is provided with: a thermal insulation box having a storage chamber and an opening connected to the storage chamber; and a refrigeration cycle for refrigerating the storage chamber. The walls configuring the thermal insulation box are configured so as to have a thermal insulation member sandwiched between an interior member and an exterior member. The exterior member of at least one of the walls has a projection projecting outward from the storage chamber or a recess sinking inward into the storage chamber. A heat-dissipating pipe that configures a section of the refrigeration cycle is positioned so as to contact the projection or recess at a location between the exterior member and the interior member.

Description

refrigerator

Embodiment of this invention is related with a refrigerator.

Recently, a refrigerator in which a heat radiating pipe constituting a part of a refrigeration cycle is arranged in a wall portion of a heat insulating box has been disclosed.

JP 2011-80692 A

However, in such a refrigerator, for example, when the wall portion of the heat insulating box is installed close to the wall of the room, the heat is trapped around the heat radiating pipe and the heat radiation efficiency may be lowered.
Therefore, in the case where the heat radiating pipe is arranged in the wall portion of the heat insulating box, even if the wall portion of the heat insulating box is arranged close to the wall of the room, the heat radiating efficiency of the heat radiating pipe is reduced. A refrigerator capable of being suppressed is provided.

The refrigerator of the present embodiment includes a storage room, a heat insulating box having an opening connected to the storage room, and a refrigeration cycle for cooling the storage room. The wall part which comprises the said heat insulation box has a heat insulation member between an inner member and an outer member, and is comprised. At least one wall portion of the wall portions has a convex portion protruding outward of the storage chamber or a concave portion recessed inward of the storage chamber in the outer member. A heat radiating pipe constituting a part of the refrigeration cycle is provided between the outer member and the inner member so as to be in contact with the convex portion or the concave portion.

The perspective view from the right front which shows the refrigerator by 1st embodiment Perspective view from front right showing insulation box Fig. 2 is a cross-sectional view taken along line AA in Fig. 2 Fig. 3 is a cross-sectional view showing the periphery of the intermediate protrusion in an enlarged manner FIG. 3 is a cross-sectional view showing an enlarged periphery of the front peripheral convex portion FIG. 3 equivalent diagram according to the second embodiment FIG. 3 equivalent diagram according to the third embodiment FIG. 3 equivalent diagram according to the fourth embodiment The perspective view from the right rear which shows the heat insulation box of the refrigerator by 5th embodiment Cross-sectional view taken along line BB in FIG. FIG. 10 equivalent diagram according to the sixth embodiment FIG. 9 equivalent diagram according to the seventh embodiment FIG. 12 is a cross-sectional view taken along the line CC of FIG.

Hereinafter, refrigerators according to a plurality of embodiments will be described with reference to the drawings. In addition, in each embodiment, the same code | symbol is attached | subjected to the substantially same component, and description is abbreviate | omitted.

(First embodiment)
First, a first embodiment will be described with reference to FIGS.
As shown in FIG. 1, the refrigerator 10 is mainly composed of a heat insulating box 11. The refrigerator 10 incorporates a refrigeration cycle (not shown). The refrigeration cycle has a compressor, a condenser, a cooler, etc. (not shown). As shown in FIG. 2, the heat insulating box 11 is formed in a rectangular box shape with one surface opened. 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 insulation box 11 is divided into a storage room in a refrigeration temperature zone and a storage room in a freezing temperature zone. Specifically, as shown in FIG. 1, inside the heat insulation box 11, a refrigerator compartment 12 is provided at the top, and a vegetable compartment 13 is provided therebelow. An ice making chamber 14 and a small freezer compartment 15 are provided side by side on the lower side of the vegetable compartment 13, and a freezer compartment 16 is provided below, that is, at the bottom.

The refrigerated room 12 and the vegetable room 13 are both storage rooms in the refrigerated temperature range, that is, the plus temperature range, and the refrigerated room 12 and the vegetable room 13 are usually set at different temperatures. For example, the maintenance temperature of the refrigerator compartment 12 is set to 1 to 5 ° C., and the maintenance temperature of the vegetable compartment 13 is set to 2 to 6 ° C. that is slightly higher than that. The ice making chamber 14, the small freezer compartment 15, and the freezer compartment 16 are all storage rooms in a freezing temperature zone, that is, a minus temperature zone, and are set to −10 to −20 ° C., for example. These refrigerator compartment 12, vegetable compartment 13, ice making compartment 14, small freezer compartment 15, and freezer compartment 16 are cooled to their respective temperature zones by a refrigerating cycle (not shown).

The opening on the front surface of the heat insulation box 11 is connected to each of the storage rooms 12-16. Stored material is fed into each of the storage chambers 12-16 through this opening. A plurality of heat insulation doors are provided on the front side of the heat insulation box 11 in order to open and close the front opening. Specifically, on the front side of the refrigerating room 12, the double door type refrigerating room

heat insulating doors

17 and 18 are provided. The

refrigerator doors

17 and 18 rotate in the left and right directions around the left and

right hinges

171 and 181, respectively, to open and close the refrigerator compartment 12.

A drawer-type heat insulation door 19 for the vegetable room is provided on the front side of the vegetable room 13. The vegetable room heat insulation door 19 has a vegetable storage container (not shown) attached to the back side thereof, and opens and closes the vegetable room 13. On the front side of the ice making chamber 14, a drawer-type heat insulating door 20 for ice making chamber is provided. An ice making container (not shown) is attached to the back side of the ice making room heat insulating door 20 to open and close the ice making room 14. On the front side of the small freezer compartment 15, a heat insulating door 21 for the small freezer compartment is provided. The small freezer compartment door 21 has a container (not shown) attached to the back side thereof, and opens and closes the small freezer compartment 15. On the front side of the freezer compartment 16, a heat insulating door 22 for the freezer compartment is provided. The freezer compartment heat insulating door 22 has a container (not shown) attached to the back side thereof, and opens and closes the freezer compartment 16.

The heat insulation box 11 is formed in a box shape having an open front by combining a plurality of divided heat insulation walls. Specifically, as shown in FIG. 2, the heat insulating box 11 includes a left heat insulating wall 23, a right heat insulating wall 24, a ceiling heat insulating wall 25, a bottom heat insulating wall 26, and a back heat insulating wall 27. Are combined. In this case, the left heat insulating wall 23 forms a left wall. The right heat insulating wall 24 forms a right wall. The ceiling heat insulating wall 25 forms a wall on the ceiling side. The bottom heat insulating wall 26 forms a bottom wall. The back heat insulating wall 27 forms a back wall.

The heat insulating walls 23 to 27 are connected and fixed by fixing

members

28 and 29 and the like. In this case, as shown in FIG. 9, the ceiling heat insulating wall 25 is formed in a shape in which the rear part is one step lower than the front part. The machine room 30 is formed in a portion surrounded by the lower portion of the ceiling 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 constituting a part of the refrigeration cycle is accommodated.

Further, the wall portion constituting the heat insulating box 11, that is, each of the heat insulating walls 23 to 27, has a heat insulating member between the inner member and the outer member. In this case, the inner member constitutes the inner surface of the heat insulating box 11, and the outer member constitutes the outer surface of the heat insulating box 11. Here, the right and left

heat insulating walls

23 and 24 will be described as a representative of the right heat insulating wall 24. In the present embodiment, the left heat insulating wall 23 is configured in substantially the same manner except that it is symmetrical with 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 as a heat insulating member between the inner member 31 and the outer member 32. The inner member 31 is made of, for example, a synthetic resin such as ABS resin, and is formed in a substantially flat plate shape. The external material 32 is formed by processing a steel plate, for example, and is formed in a plate shape as a whole. As shown in FIGS. 1 and 2, the external member 32 has a plurality of

convex portions

34 and 35. Further, the outer peripheral portion of the outer member 32 is bent toward the storage chambers 12 to 16 as shown in FIG. Inside the right heat insulating wall 24, a heat radiating pipe 36 is provided in contact with the

convex portions

34 and 35. The heat radiating pipe 36 constitutes a part of the refrigeration cycle.

As shown in FIGS. 2 and 3, the outer member 32 is formed with a circumferential convex portion 34 and an intermediate convex portion 35. 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 outward from the storage chambers 12 to 16, that is, to the side opposite to the inner member 31. As shown in FIG. 2, the circumferential protrusion 34 is formed along the peripheral edge of the outer member 32 and surrounds the outer peripheral edge of the outer member 32. The circumferential convex portion 34 includes a front circumferential convex portion 341, a rear circumferential convex portion 342, an upper circumferential convex portion 343, and a lower circumferential convex portion 344. The intermediate convex portion 35 is connected to the lower peripheral convex portion 344 of the peripheral convex portion 34 and is formed in a rectangular shape having the vertical direction as the longitudinal direction. The intermediate convex portion 35 is located on the side of the storage chambers 14 to 16 in the freezing temperature zone, in this case, on the right side.

Incidentally, the circumferential convex portion 34 and the intermediate convex portion 35 are formed by press-drawing a plate-like outer member 32, in this case, a steel plate. Further, the protruding amount of the circumferential protruding portion 34 and the intermediate protruding portion 35 is substantially the same. In the present embodiment, the protruding amount is set to about 3 to 5 mm, for example. The width dimension of the rectangular intermediate convex portion 35, that is, the dimension in the front-rear direction is set to about one third of the width dimension of the right heat insulating wall 24, that is, the dimension in the front-rear direction of the refrigerator 10.

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

As shown in FIG. 2, the heat radiating pipe 36 is provided meandering around the right heat insulating wall 24. Specifically, the heat radiating 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 rear end of the right heat insulating wall 24. The heat radiating pipe 36 extends downward along the rear circumferential convex portion 342 of the circumferential convex portion 34, then bends forward at the lower end of the rear circumferential convex portion 342, and further extends forward along the lower circumferential convex portion 344 of the circumferential convex portion 34. The heat radiating pipe 36 extends along the peripheral edge of the intermediate convex portion 35 in the middle thereof, and again extends forward along the lower peripheral convex portion 344 of the peripheral convex portion 34. The heat radiating pipe 36 bends upward at the front end of the lower circumferential convex portion 344 and further extends upward along the front circumferential convex portion 341. Thereafter, the heat radiating pipe 36 bends backward at the upper end of the front peripheral convex portion 341 and extends rearward along the upper peripheral convex portion 343.

After the heat radiating pipe 36 circulates the inside of the right heat insulating wall 24 as described above, the heat radiating pipe 36 exits from the upper part of the rear end of the right heat insulating wall 24 to the machine room 30 side. Thereafter, although not shown in detail, the heat dissipating pipe 36 has the same configuration as that of the heat dissipating pipe 36 and is connected to one end of the heat dissipating pipe provided on the left heat insulating wall 23 by welding or the like. The other end of the heat radiating pipe provided on the left heat insulating wall 23 is connected to a cooler (not shown).

Next, the internal configuration of the right heat insulating wall 24 will be described with reference to FIGS. Note that the heat radiating pipes 361 to 364 described below indicate the heat radiating pipes 36 at positions having different cross-sections, and they constitute one continuous heat radiating pipe 36.

First, when viewing the rear portion of the right heat insulating wall 24, as shown in FIG. 3, the rear peripheral convex portion 342 is located between the vacuum heat insulating panel 33 and the outer member 32 and inside the rear peripheral convex portion 342. A heat radiating pipe 361 extending downward along the line passes therethrough. In addition, a space 38 is formed in the rear portion of the right heat insulating wall 24 behind the heat radiating pipe 361 and the vacuum heat insulating panel 33 and at a connection portion between the right heat insulating wall 24 and the back heat insulating wall 27. . In this space 38, two suction pipes 39 are provided. The suction pipe 39 is a part of piping connecting a cooler (not shown) to the compressor, and a cold refrigerant discharged from the cooler is flowed through the suction pipe 39. In this case, the two suction pipes 39 are in contact with the inside of the rear peripheral convex portion 342 of the peripheral convex portion 34 and are fixed by a metal tape 40 such as an aluminum tape. Note that a heat insulating material such as sponge or urethane foam may be provided in the space 38 and the suction pipe 39 may be fixed thereby.

Next, looking at the intermediate portion of the right heat insulating wall 24, the

heat radiation pipes

362 and 363 pass between the vacuum heat insulating panel 33 and the outer member 32 and inside the intermediate convex portion 35. The heat radiating pipe 362 extends upward along the rear portion of the intermediate convex portion 35. The heat radiating pipe 363 extends downward along the front portion of the intermediate convex portion. These

heat radiating pipes

362 and 363 are provided in contact with the inside of the intermediate convex portion 35, respectively.

Looking at the front side portion of the right heat insulating wall 24, a heat radiating pipe 364 passes between the vacuum heat insulating panel 33 and the outer member 32 and inside the front peripheral convex portion 341. The heat radiating pipe 364 extends upward along the front peripheral convex portion 341. The heat radiating pipe 364 is provided in contact with the inner side of the front peripheral convex portion 341. In this case, the heat radiating pipes 361 to 364 are fixed to the outer member 32 by a metal tape 41 such as an aluminum tape as shown in FIGS.

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 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 peripheral convex portion 341. The accommodating part 42 has an insertion port 421 formed between the inner member 31 and the outer member 32. Inside the accommodating part 42, the dew-proof pipe 37 and the reinforcing member 43 are accommodated, and a seal member 44 is provided so as to close the insertion port 421. In this case, the dew proof pipe 37 is inserted into the accommodating portion 42 through the insertion port 421.

The dew-proof pipe 37 is a part of piping connecting between the compressor and the heat radiating pipe 36 or between the heat radiating pipe 36 and the cooler. The dew proof pipe 37 is composed of parts different from the heat radiating pipe 36. Like the heat radiating pipe 36, the dew proof pipe 37 is supplied with a refrigerant that has been compressed by the compressor and brought to a high temperature state. Thereby, the opening periphery of the heat insulation box 11 is heated, and the dew condensation around the opening is suppressed.

The reinforcing member 43 is made of, for example, a steel plate, and reinforces the front end edge portion of the right heat insulating wall 24. The reinforcing member 43 is formed in a so-called U-shape that is bent along the inner surface of the front end portion of the outer member 32 and the rear side is opened. The reinforcing member 43 extends in the vertical direction along the front edge of the right heat insulating wall 24. The reinforcing member 43 is fixed to the outer member 32 by bonding or screws (not shown).

The seal member 44 is formed by pultrusion molding or extrusion molding using a material having a lower thermal conductivity than the outer member 32, for example, a synthetic resin or hard rubber. The seal member 44 is configured so that substantially the same cross-sectional shape continues in the vertical direction. The seal member 44 holds the dew proof pipe 37 and closes the insertion port 421 to connect the inner member 31 and the outer member 32.

Specifically, the seal member 44 has a holding portion 441 at one end. The holding part 441 holds the dew proof pipe 37 so as to hold it. In this case, a part of the dew proof pipe 37 is exposed from the holding portion 441 and is in contact with the reinforcing member 43. That is, the dew proof pipe 37 is in direct contact with the reinforcing member 43 and is also indirectly in contact with the outer member 32 via the reinforcing member 43. For this reason, the heat of the dew proof pipe 37 is transmitted to the outer member 32 via the reinforcing member 43. Thereby, the dew prevention pipe 37 can heat the outer member 32 indirectly.

Further, the seal member 44 has a blocking portion 442 and claw

portions

443 and 444 on the side opposite to the holding portion 441. The seal member 44 is fixed to the inner member 31 and the outer member 32 by sandwiching the inner member 31 between the closing portion 442 and the claw portion 443 and sandwiching the outer member 32 between the closing portion 442 and the claw portion 444. . Further, the seal member 44 has an elastic deformation portion 445 between the holding portion 441 and the closing portion 442. The elastic deformation portion 445 elastically deforms in the thickness direction of the vacuum heat insulating panel 33. Thereby, the seal member 44 can tolerate an error in the thickness dimension of the vacuum heat insulation panel 33 that occurs when the vacuum heat insulation panel 33 is manufactured.

The vacuum heat insulating panel 33 is formed in a plate shape, and is bonded and fixed to the inner member 31 and the outer member 32 by a resin adhesive such as hot melt. In this case, as shown in FIG. 3, the vacuum heat insulating panel 33 is bonded and fixed to the outer member 32 in a form separated from the circumferential convex portion 34 and the intermediate convex portion 35. The vacuum heat insulating panel 33 is provided apart from the heat radiating pipe 36 and the metal tape 41, and is not in contact with the heat radiating pipe 36 and the metal tape 41.

As shown in FIGS. 4 and 5, the vacuum heat insulation panel 33 is configured by housing a core material 45 in a bag body 46 and evacuating the inside thereof to seal it under reduced pressure. The core material 45 is configured by, for example, a laminated material of inorganic fibers such as glass wool, which is previously formed into a plate shape. The bag body 46 is formed in a bag shape by superimposing two laminated films having gas barrier performance and welding the periphery thereof. The bag body 46 is composed of two types of laminated films having different characteristics, in this case, an inner laminated film 461 and an outer laminated film 462.

The inner laminated film 461 and the outer laminated film 462 are configured by sandwiching a layer for obtaining gas barrier performance, in this case, a metal layer between resin films, and further laminating a plurality of types of resin films. The inner laminated film 461 and the outer laminated film 462 exhibit different characteristics depending on whether the metal layer for obtaining the gas barrier performance is an aluminum foil layer or an aluminum vapor deposition layer. Here, the difference between the aluminum foil layer and the aluminum vapor deposition layer will be described. Generally, an aluminum vapor deposition layer deposits aluminum in a vacuum with respect to a film serving as a base material, and thus can be made thinner than an aluminum foil layer. Therefore, the aluminum vapor deposition layer has a lower thermal conductivity than the aluminum foil layer and is excellent in heat insulation performance. On the other hand, the aluminum foil layer is formed by laminating and laminating an aluminum foil formed by rolling, for example, between two films, so that the film thickness is larger than that of the aluminum vapor deposition layer. For this reason, an aluminum foil layer is excellent in gas barrier performance compared with an aluminum vapor deposition layer, and is also excellent in durability performance.

In this embodiment, the inner laminated film 461 located on the inner member 31 side has an aluminum vapor deposition layer as a metal layer for obtaining gas barrier performance. On the other hand, the outer laminated film 462 located on the outer member 32 side has an aluminum foil layer as a metal layer for obtaining gas barrier performance. In this case, the surface of the vacuum heat insulating panel 33 on the side of the heat radiating pipe 36 has an aluminum foil layer excellent in durability performance. Therefore, damage to the vacuum heat insulating panel 33 due to contact with the heat radiating pipe 36 is reduced. Further, the surface of the vacuum heat insulation panel 33 on the side of the storage chambers 12 to 16 has an aluminum vapor deposition layer having low heat conductivity and excellent heat insulation performance. For this reason, the so-called heat bridge in which the cool air in the storage chambers 12 to 16 travels along the surface of the bag body 46 of the vacuum heat insulation panel 33 from the inner member 31 side to the outer member 32 side is suppressed.

The bag body 46 is formed in a bag shape by overlapping the inner laminated film 461 and the outer laminated film 462 and welding the periphery thereof. In this case, a welding ear portion 463 is formed on the outer edge portion of the vacuum heat insulating panel 33 in a form in which the periphery of the bag body 46 protrudes from the core material 45. The ear portion 463 is folded back toward the outer member 32 and is accommodated inside the front peripheral convex portion 341 that becomes the front end edge of the right heat insulating wall 24. Although not shown in detail, the ear portion 463 is fixed along the surface of the outer laminated film 462 on the outer member 32 side by an adhesive, a metal tape, or the like. In this case, the ear portion 463 is separated from the heat radiating pipe 36 and the metal tape 41. Further, the ear portion 463 is also separated from the outer member 32. Accordingly, the stepped portion 464 generated by folding the ear portion 463 is not in contact with the outer member 32.

According to this configuration, at least the left and right heat insulating walls among the heat insulating walls forming the opening of the heat insulating box 11, that is, the left heat insulating wall 23, the right heat insulating wall 24, the ceiling heat insulating wall 25, and the bottom heat insulating wall 26.

Reference numerals

23 and 24 denote outer convex portions 34 and intermediate convex portions 35 which are located on the outer member 32 and project outward from the storage chambers 12 to 16. And inside this right and left

heat insulation wall

23 and 24, between the outer member 32 and the inner member 31, it contacts the inner side of the circumferential convex part 34 and the intermediate | middle convex part 35, and comprises a part of refrigerating cycle. A heat radiating pipe 36 is provided.

According to this, when the right side surface of the refrigerator 10, for example, the outer side surface of the right heat insulating wall 24 in this case is installed in contact with the wall of the room, the circumferential convex part 34 and the intermediate convex part 35 are in contact with the wall of the room, A space is formed between the part where the circumferential convex part 34 and the intermediate convex part 35 do not exist and the wall of the room. That is, the entire outer surface of the right heat insulating wall 24 of the refrigerator 10 does not come into contact with the wall of the room, so that a space for radiating heat around the heat radiating pipe 36 is secured. Therefore, in the refrigerator 10, even when the right heat insulating wall 24 forming the right side surface thereof is disposed close to or in contact with the wall of the room or the like, heat is trapped around the heat radiating pipe 36 and the heat radiating efficiency is lowered. Can be suppressed. The same effects as described above can be obtained with respect to the left heat insulating wall 23 having the same configuration as the right heat insulating wall 24.

The refrigerator 10 includes a vacuum heat insulating panel 33 as a heat insulating member of the right heat insulating wall 24. The vacuum heat insulation panel 33 is adhered and fixed to the outer member 32 in a form separated from the circumferential convex portion 34 and the intermediate convex portion 35. According to this, it is suppressed that the vacuum heat insulation panel 33 contacts the thermal radiation pipe 36 provided in contact with the circumferential convex part 34 and the intermediate | middle convex part 35. FIG. Therefore, damage to the vacuum heat insulating panel 33 due to contact with the heat radiating pipe 36 is suppressed. As a result, the vacuum heat insulation panel 33 can maintain high heat insulation performance.

The heat radiating pipe 36 is located between the vacuum heat insulating panel 33, the circumferential convex portion 34 and the intermediate convex portion 35, and is fixed to the outer member 32 with a metal tape 41. The vacuum heat insulating panel 33 is provided away from the heat radiating pipe 36 and the metal tape 41. According to this, it can suppress that the heat which arises in the thermal radiation pipe 36 is transmitted to the vacuum heat insulation panel 33 directly or via the metal tape 41. FIG. Therefore, it is possible to suppress the inflow of heat into the storage chambers 12 to 16 due to the so-called heat bridge, in which the heat generated in the heat radiating pipe 36 is transmitted to the storage chambers 12 to 16 side through the surface of the vacuum heat insulation panel 33.

The heat radiating pipe 36 is provided along the inside of the circumferential convex portion 34 and the intermediate convex portion 35. Therefore, when the refrigerator 10 is manufactured, the heat radiating pipe 36 can be disposed along the circumferential convex portion 34 and the intermediate convex portion 35. According to this, 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, it is easy to attach the heat radiating pipe 36 to the outer member 32 and the workability is improved. To do.

The circumferential convex portion 34 and the intermediate convex portion 35 are formed by press-drawing the plate-like outer member 32. Therefore, the strength of the outer member 32 is increased by work hardening by drawing at the peripheral portions of the circumferential convex portion 34 and the intermediate convex portion 35. Further, the outer member 32 is formed with the circumferential convex portion 34 and the intermediate convex portion 35, whereby the secondary moment of the entire outer member 32 is increased. As a result, the strength of the outer member 32 as a whole increases in the bending direction.

A front peripheral convex portion 341 that is a part of the peripheral convex portion 34 is provided on the edge portion on the opening side of the heat insulating box 11, that is, the front end edge portion of the right heat insulating wall 24. According to this, the strength of the end edge portion on the opening side of the heat insulating box 11 that is not connected to other heat insulating walls and particularly requires strength, in this case, the front edge portion of the right heat insulating wall 24 is increased in strength. Can be increased.

A reinforcing member 43 is provided inside the front peripheral convex portion 341 along the front end edge of the right heat insulating wall 24. According to this, the intensity | strength of the front-end edge part of the right part heat insulation wall 24 can further be increased.

The vacuum heat insulating panel 33 includes a core material 45 and a bag body 46 that accommodates the core material 45. The bag body 46 has an adhesive ear 463 that protrudes around the core member 45. The ear portion 463 is folded back toward the outer member 32 and is accommodated in the front peripheral convex portion 341 of the peripheral convex portion 34. In this case, the stepped portion 464 generated by folding the ear portion 463 is not in contact with the outer member 32. For this reason, a gap does not occur between the outer member 32 and the vacuum heat insulation panel 33 due to the step portion 464. Therefore, the adhesiveness between the outer member 32 and the vacuum heat insulating panel 33 can be kept good. Further, the shape of the stepped portion 464 is not raised on the outer member 32 when the stepped portion 464 contacts the outer member 32. For this reason, the external appearance of the outer member 32, that is, the design of the refrigerator 10 can be kept good.

The vacuum heat insulating panel 33 is provided with the inner laminated film 461 including the aluminum vapor deposition layer on the inner member 31 side and the outer laminated film 462 including the aluminum foil layer on the outer member 32 side. According to this, the so-called heat bridge in which the cool air in the storage chambers 12 to 16 wraps around toward the outer member 32 can be effectively suppressed by the inner laminated film 461 having excellent heat insulation performance. Moreover, the vacuum insulation panel 33 can be effectively protected from damage due to contact of the heat radiating pipe 36 or the like by the outer laminated film 462 having excellent durability.

The heat radiating pipe 36 is also provided inside the intermediate convex portion 35 located on the side of the storage chambers 14 to 16 in the freezing temperature zone. According to this, the sides of the storage chambers 14 to 16 in the freezing temperature zone where the cooling temperature is lower can be heated by the heat of the radiating pipe 35. Therefore, even if the vacuum heat insulating panel 33 is damaged and its heat insulating performance is deteriorated, the outer member 32 is cooled by the cool air in the storage chambers 14 to 16 in the freezing temperature zone, and dew condensation is generated around the outer member 32. It is possible to suppress the occurrence.

The above-described effects are particularly effective when the thickness of the

heat insulating walls

23 and 24 on both the left and right sides is 35 mm or less. In this embodiment, the thickness of the vacuum heat insulation 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. The height is 21.5 mm. Thus, the

heat insulating walls

23 and 24 on both the left and right sides are configured with a more effective thickness dimension of 25 mm or less.

(Second embodiment)
Next, a second embodiment will be described with reference to FIG.
In the second embodiment, the outer member 32 is provided with a first intermediate protrusion 47 and a second intermediate protrusion 48 instead of the intermediate protrusion 35 of the first embodiment. The first intermediate convex portion 47 and the second intermediate convex portion 48 are set such that the width dimension, that is, the dimension in the front-rear direction is slightly larger than the outer diameter of the heat radiating pipe 36. In this case, a heat radiating pipe 362 extending upward is passed inside the first intermediate convex portion 47, and a heat radiating pipe 363 extending downward is passed inside the second intermediate convex portion 48.

According to this, the same effect as the first embodiment can be obtained. Furthermore, for example, when the outer surface of the right heat insulating wall 24 of the refrigerator 10 is installed in contact with the wall of the room, a space is also formed between the first intermediate protrusion 47 and the second intermediate protrusion 48. For this reason, the radiation space of the radiation pipes 364 and 365 can be further increased. Therefore, even when the wall portion of the heat insulating box 11 is arranged close to or in contact with the wall of the room, it is more effectively suppressed that heat is trapped around the heat radiating pipe 36 and the heat radiating efficiency is lowered. can do.

(Third embodiment)
Next, a third embodiment will be described with reference to FIG.
In the third embodiment, the outer member 32 is formed with a circumferential concave portion 49 and an intermediate concave portion 50 as concave portions, instead of the circumferential convex portion 34 and the intermediate convex portion 35 of the first embodiment. The circumferential recess 49 and the intermediate recess 50 are formed in the outer member 32 so as to be recessed inward of the storage chambers 12 to 16, that is, toward the inner member 31 side. In this case, the circumferential recess 49 includes a front circumferential recess 491 and a rear circumferential recess 492, and an upper circumferential recess and a lower circumferential recess (not shown). The front peripheral recess 491, the rear peripheral recess 492, the upper collecting recess and the lower peripheral recess are provided along the peripheral edge of the outer member 32 so as to surround the outer member 32, similarly to the peripheral protrusion 34. Similarly to the intermediate convex portion 35, the intermediate concave portion 50 is connected to the lower peripheral concave portion of the peripheral concave portion 49 and is formed in a rectangular shape having the vertical direction as the longitudinal direction. This intermediate recess 50 is also located on the side of the storage chambers 14 to 16 in the freezing temperature zone, in this case, on the right side.

Further, the vacuum heat insulation panel 33 is formed with a peripheral escape portion 51 and an intermediate escape portion 52 in a form in which the surface on the outer member 32 side is recessed. The circumferential relief portion 51 and the intermediate relief portion 52 are formed simultaneously with the molding of the core material 45 by a mold, for example. In this case, the circumferential relief 51 is formed along the shape of the circumferential recess 49, and includes a front circumferential relief 511 and a rear circumferential relief 512, and an upper circumferential relief and a lower circumferential relief (not shown). It is configured. Further, the intermediate escape portion 52 is formed along the shape of the intermediate recess 50.

The heat radiating pipe 361 is provided between the rear circumferential recess 512 of the vacuum heat insulation panel 33 and the rear circumferential recess 492 of the outer member 32 and is in contact with the inner side of the rear circumferential recess 492. Further, the heat radiating pipe 362 is provided between the intermediate escape portion 52 of the vacuum heat insulating panel 33 and the intermediate concave portion 50 of the outer member 32, and is in contact with the inner side of the rear portion of the intermediate concave portion 50. Further, the heat radiating pipe 363 is provided between the intermediate escape portion 52 of the vacuum heat insulating panel 33 and the intermediate concave portion 50 of the outer member 32, and is in contact with the inside of the front portion of the intermediate concave portion 50. The heat radiating pipe 364 is provided between the front peripheral recess 491 of the vacuum heat insulating panel 33 and the front peripheral recess 491 of the outer member 32 and in contact with the inside of the front peripheral recess 491.

The heat radiating pipe 36 is fixed by a metal tape 41 such as an aluminum tape as in the first embodiment. Further, the vacuum heat insulating panel 33 is bonded and fixed to the inner member 31 and the outer member 32 in a form separated from the circumferential recess 49 and the intermediate recess 50. The vacuum heat insulating panel 33 is separated from the heat radiating pipe 36 and the metal tape 41.

According to this configuration, the same effect as in the first embodiment can be obtained. Further, it is not necessary to provide the outer member 32 with a protruding portion that protrudes outward from the storage chambers 12 to 16. Therefore, even if it is the structure which arrange | positions the thermal radiation pipe 36 inside the right part heat insulation wall 24, the increase in the thickness dimension of the right part heat insulation wall 24 can be suppressed. As a result, space saving as the whole refrigerator 10 is achieved.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIG.
In the fourth embodiment, the outer member 32 is formed with a first intermediate recess 53 and a second intermediate recess 54 in place of the intermediate recess 50 of the third embodiment. The first intermediate recess 53 and the second intermediate recess 54 are set such that the width dimension, that is, the dimension in the front-rear direction is slightly larger than the outer diameter of the heat radiating pipe 36. In this case, a heat radiating pipe 362 is passed inside the first intermediate recess 53. Further, a heat radiating pipe 363 is passed inside the second intermediate recess 54. The vacuum heat insulation panel 33 is formed with a first intermediate escape portion 55 and a second intermediate escape portion 56 instead of the intermediate escape portion 52 in the third embodiment. The first intermediate relief portion 55 and the second intermediate relief portion 56 are formed along the first intermediate recess portion 53 and the second intermediate recess portion 54, respectively. The vacuum heat insulation panel 33 is separated from the heat radiating pipe 36 and the metal tape 41, and is also separated from the circumferential recess 49, the first intermediate recess 53, and the second intermediate recess 54.

According to this configuration, the same effect as that of the third embodiment can be obtained. Furthermore, the space between the first intermediate recess 53 and the second intermediate recess 54 inside the right heat insulating wall 24 is filled with the vacuum heat insulating panel 33. Therefore, even when a recess is formed in the vacuum heat insulation panel 33, the portion where the vacuum heat insulation panel 33 becomes thin can be suppressed as much as possible. As a result, it is possible to suppress a decrease in the heat insulation performance of the right heat insulation wall 24 as a whole.

(Fifth embodiment)
Next, a fifth embodiment will be described with reference to FIGS. 9 and 10.
In 5th embodiment, the heat insulation box 11 of the refrigerator 10 has the back side convex part 60 as a convex part. The back convex portion 60 is provided along the peripheral edge portion of the back heat insulating wall 27 in the back wall portion that does not form the opening of the heat insulating box 11, that is, the back heat insulating wall 27. The back side convex part 60 is comprised from the 1st back side convex part 601 and the 2nd back side convex part 602, as shown in FIG. The first back convex portion 601 is provided on each of the left and right edges of the back heat insulating wall 27 and extends downward from the machine room 30 side. The second back side convex part 602 is provided in the lower part of the back part heat insulation wall 27, extends in the left-right direction, and connects the lower ends of the left and right first back side convex parts 601.

Further, as shown in FIG. 10, the back heat insulating wall 27 is a vacuum heat insulating panel 63 as a heat insulating member between the inner member 61 and the outer member 62 in the same manner as the left and right

heat insulating walls

23 and 24 of the above embodiments. have. The vacuum heat insulation panel 63 is bonded and fixed to the inner member 61 and the outer member 62 by a resin adhesive such as hot melt. The inner member 61, the outer member 62, and the vacuum heat insulation panel 63 are configured in substantially the same manner as the inner member 31, the outer member 32, and the vacuum heat insulation panel 33 in each of the above embodiments except for the shape.

The back-side convex portion 60 is formed on the outer member 62 so as to protrude outward from the storage chambers 12 to 16. In this case, the back convex part 60 is formed in a rectangular shape, specifically a trapezoidal shape. The back projection 60 is formed by press drawing the outer member 62. The vacuum heat insulation panel 63 is provided at a position that does not overlap the back-side convex portion 60. A soft tape 64 is provided on the side of the vacuum heat insulation panel 63 and between the inner member 61 and the outer member 62 so as to be located in front of the back-side convex portion 60. The soft tape 64 is made of, for example, an open-cell synthetic rubber and is excellent in flexibility, stretchability, heat insulation, and waterproofness.

Between the inner member 61 and the outer member 62, a heat radiating pipe 65 is provided in contact with the inside of the back-side convex portion 60. The heat radiating pipe 65 is fixed to the outer member 62 by a metal tape 66 such as an aluminum tape. In this case, the protruding amount of the back convex portion 60 is set smaller than the diameter of the heat radiating pipe 65. Therefore, the heat radiating pipe 65 is pressed against the soft tape 64 via the metal tape 66. Further, the width dimension of the back convex portion 60 is set to be slightly larger than the diameter of the heat radiating pipe 65. The heat radiating pipe 65 and the metal tape 66 are separated from the vacuum heat insulating panel 63. That is, the heat radiating pipe 65 and the metal tape 66 are not in contact with the vacuum heat insulating panel 63.

This heat radiating pipe 65 also constitutes a part of the refrigeration cycle in the same manner as the heat radiating pipe 36 of each of the above embodiments. As shown in FIG. 9, the heat radiating pipe 65 enters the back heat insulating wall 27 from the machine room 30, travels around the periphery of the back heat insulating wall 27 along the back convex portion 60, and then passes from the back heat insulating wall 27 to the machine. It is provided so as to go into the chamber 30. Both ends of the heat radiating pipe 65 are connected to a compressor in the machine room 30 or connected to the heat radiating pipe 36 and the like, although details are not shown.

According to this embodiment, it is possible to obtain mainly the same functions and effects as those of the first embodiment with respect to 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 surface of the back heat insulating wall 27 is installed in contact with the wall of the room, the back convex portion 60 is brought into contact with the wall of the room. A space is formed between the part that does not exist and the wall of the room. Therefore, the entire outer surface of the back heat insulating wall 27 of the refrigerator 10 does not contact the wall of the room, and a space for heat dissipation of the heat radiating pipe 65 is secured. Therefore, in the refrigerator 10, even when the back heat insulating wall 27 that forms the back surface of the refrigerator 10 is disposed close to or in contact with the wall of the room, the heat is trapped around the heat radiating pipe 65 and the heat radiating efficiency is lowered. Can be suppressed.

Further, the heat radiating pipe 65 is accommodated inside the back convex portion 60. Therefore, when the refrigerator 10 is manufactured, the heat radiating pipe 65 can be disposed along the back-side convex portion 60. According to this, compared with the case where the outer member 62 does not have the back side convex part 60 and is only a flat structure, attachment of the heat radiating pipe 65 with respect to the outer member 62 becomes easy, and workability | operativity improves.

Further, the back convex portion 60 is formed by press-drawing a plate-like outer member 62. Therefore, the strength of the outer member 62 is increased by work hardening by drawing at the periphery of the back convex portion 60. Further, the formation of the back-side convex portion 60 increases the sectional moment of the entire outer member 62, and as a result, the strength of the outer member 62 as a whole in the bending direction increases.

And the back side convex part 60 is formed in the trapezoid shape. Therefore, a larger heat radiation area of the heat radiating pipe 65 can be secured, and as a result, the heat radiating efficiency of the heat radiating pipe 65 can be improved.

In this embodiment, the outer member 62 may have a concave portion that is recessed toward the inner member 61 instead of the back convex portion 60.

(Sixth embodiment)
Next, a sixth embodiment will be described with reference to FIG.
In the sixth embodiment, the shape of the back-side convex portion 60 is different from that of the fifth embodiment. That is, the back-side convex portion 60 of the sixth embodiment is not a trapezoidal shape, but is formed in a substantially semicircular shape along a part of the outer diameter of the heat radiating pipe 65. According to this, it is easy to arrange | position the thermal radiation pipe 65 inside the back side convex part 60, and the position after arrangement | positioning is hard to shift | deviate. Therefore, it is easy to attach the heat radiating pipe 65 to the outer member 62, and as a result, workability is further improved.

(Seventh embodiment)
Next, a seventh embodiment will be described with reference to FIGS.
In the seventh embodiment, the machine room 30 is provided in the lower rear portion of the heat insulation box 11. Although details are not shown, the machine room 30 is provided with a compressor that constitutes a part of the refrigeration cycle as in the above embodiments. In this case, the 1st back side convex part 601 is in the both right and left edge parts of the back part heat insulation wall 27, respectively, and is extended upwards from the machine room 30 side. The second back side convex part 602 is in the upper part of the back heat insulating wall 27 and extends in the left-right direction to connect the upper ends of the left and right first back side convex parts 601. A heat radiating pipe 65 is disposed in the back convex portion 60.

In the seventh embodiment, the convex portion 60 is provided on the back heat insulating wall 27 that does not form the opening of the heat insulating box 11, but the convex portion and the concave portion are formed on the wall portion that forms the opening of the heat insulating box 11. Is not provided. That is, in the seventh embodiment, the left and right

heat insulating walls

23, 24 are not provided with the

convex portions

34, 35, 47, 48 or the

concave portions

49, 50, 53, 54 as in the above embodiments.

Therefore, in the seventh embodiment, the outer members 32 of the left and right

heat insulating walls

23 and 24 are substantially flat without having a convex portion or a concave portion. In this case, in this embodiment, as shown in FIG. 13, the outer member 32 of the vacuum heat insulating panel 33 is replaced with the

convex portions

34, 35, 47, 48 or the

concave portions

49, 50, 53, 54 in the above embodiments. A recess 331 is formed on the side. The heat radiating pipe 36 is disposed along the recess 331.

根据该结构，能得る得到与上述第 5 实施方式相同的作用效果Furthermore, in this embodiment, the machine room 30 is provided in the lower rear side of the heat insulation box 11. According to this, the heat radiated from the compressor disposed in the machine room 30 passes through the space between the back heat insulating wall 27 formed by the back-side convex part 60 and the wall surface of the room, and from the machine room 30. It flows upward and dissipates heat. Therefore, according to this configuration, it is possible to effectively dissipate heat generated in the compressor without providing a new member for heat dissipation of the compressor. Further, the left and right side surfaces of the refrigerator 10, that is, the outer side surfaces of the left and right

heat insulating walls

23 and 24, are configured to have a flat appearance. Therefore, the appearance of the left and right side surfaces in the installed state of the refrigerator 10 can be improved.

Although not shown in detail, in each embodiment, the left heat insulating wall 23 is configured in substantially the same manner except that it is symmetrical with the right heat insulating wall 24. The left heat insulating wall 23 is also provided with a heat radiating pipe corresponding to the heat radiating pipe 36.

It is good also as a structure which provides a convex part or a recessed part in the ceiling part heat insulation wall 25, and arrange | positions a thermal radiation pipe inside these convex part or a recessed part. In this case, a space is secured between the upper surface of the refrigerator 10, that is, the outer surface of the ceiling heat insulating wall 25, and the ceiling of the room. Therefore, the user can arrange | position the refrigerator 10 without being conscious of ensuring of thermal radiation space about a thermal radiation pipe.

The heat insulation box 11 is not limited to the one having an opening on the front surface, and may have a structure having an opening on the upper surface, for example. In this case, the heat radiating pipe and the convex portion or the concave portion may be provided on the heat insulating walls on the four sides surrounding the opening on the upper surface.

For the heat insulating members of the heat insulating walls 23 to 27, urethane foam or the like may be used instead of the vacuum heat insulating panel, or a vacuum heat insulating panel and urethane foam may be used in combination.
The heat insulation box 11 is not limited to a combination of the divided heat insulation walls 23 to 27. For example, the heat insulating box 11 may have a structure in which an inner box forming a surface on the storage chambers 12 to 16 side is formed in an integral 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 configuration including an aluminum vapor deposition layer. Furthermore, the inner laminated film 461 and the outer laminated film 462 may be configured to have either an aluminum deposited layer or an aluminum foil layer, or may be configured by stacking a plurality of aluminum deposited layers and aluminum foil layers.

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

According to the configuration of the embodiment described above, for example, when the wall portion that forms the side surface of the heat insulating box is installed in contact with the wall of the room, the convex portion exists because the convex portion contacts the wall of the room. A space is formed between the unoccupied part and the wall of the room. Therefore, the entire side surface of the refrigerator does not come into contact with the wall of the room, and a space for radiating heat around the heat radiating pipe is secured. Therefore, even when the wall portion of the heat insulating box is disposed close to or in contact with the wall of the room, it is possible to suppress the heat radiation from being accumulated around the heat radiating pipe and the heat radiation efficiency from being lowered.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit 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 equivalent scope thereof.

Claims

A heat insulating box having a storage room and an opening connected to the storage room;
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 wall portion of the wall portions has a convex portion projecting outward of the storage chamber in the outer member or a concave portion recessed inward of the storage chamber,
The refrigerator provided with the heat radiating pipe which comprises the said refrigeration cycle in contact with the said convex part or the said recessed part between the said outer member and the said inner member.
A vacuum insulation panel is provided as the insulation member,
The refrigerator according to claim 1, wherein the vacuum heat insulation panel is bonded and fixed to the outer member in a form spaced from the convex portion or the concave portion.
The heat radiating pipe is between the convex part or the concave part and the vacuum heat insulation panel and is fixed to the outer member by a metal tape,
The refrigerator according to claim 2, wherein the vacuum heat insulation panel is separated from the heat radiating pipe and the metal tape.
The refrigerator according to any one of claims 1 to 3, 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 a reinforcing member is provided along the end edge portion on the convex portion of the end edge portion.
The vacuum heat insulation panel includes a core material and a bag body that accommodates the core material,
The bag body has an adhesive ear that protrudes around the core,
The refrigerator according to claim 5 or 6, wherein the ear portion is folded back toward the outer member and is accommodated 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 back wall portion that does not form the opening.
The refrigerator according to any one of claims 1 to 3, wherein the convex portion is provided on a back wall portion that does not form the opening and is not provided on the wall portion that forms the opening.
The refrigerator according to claim 8 or 9, further comprising a machine room provided with a compressor constituting a part of the refrigeration cycle at a lower portion of the heat insulating box.