JP5848618B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator provided with a foam heat insulating material in a heat insulating box.

  A conventional refrigerator is disclosed in Patent Document 1. This refrigerator includes a heat insulating box filled with a foam heat insulating material such as urethane foam between the outer box and the inner box. The inner box is formed of a resin molded product and forms the inner surface of the storage chamber. The outer box is formed of a metal plate, and at least the top surface and both side surfaces of the heat insulating box body are formed by bending to cover the outer side of the inner box.

  On the inner surface of the outer box, a heat radiating pipe extending in the vertical direction through which the refrigerant flows is arranged. A plurality of rows of heat radiating pipes are arranged in parallel in a horizontal direction by meandering, and are attached in close contact with an outer case by an adhesive tape such as an aluminum tape extending in the vertical direction. Thereby, the heat of the refrigerant | coolant which distribute | circulates the inside of a thermal radiation pipe is radiated | emitted via an outer box.

  In the refrigerator having the above-described configuration, since the heat radiating pipe meanders, bending or twisting due to elasticity is likely to occur, and the mounting position is not stable, so that workability during mounting is poor. For this reason, after temporarily fixing with the adhesive tape which crosses a plurality of rows of radiating pipes, it fixes with the adhesive tape extended up and down.

  FIG. 7 shows a developed view of the outer box. The outer box 11 is integrally formed with a top plate 11a and side plates 11b and 11e which are heat insulating boxes. The heat radiating pipe 33 is installed on the top plate 11a and the side surface plates 11b and 11e. The heat radiating pipe 33 is temporarily fixed by a first adhesive tape 41 extending over a plurality of rows at an intermediate portion in the vertical direction on the side plates 11b and 11e. Thereby, the displacement by the elasticity of the meandering heat radiating pipe 33 is suppressed.

  Next, a second adhesive tape 42 such as an aluminum tape extending in the extending direction of the heat radiating pipe 33 is crossed and pasted on the first adhesive tape 41. Thereby, the heat radiating pipe 33 can be attached in close contact with the outer box 11.

JP-A 61-265474

  According to the conventional refrigerator, the first and second adhesive tapes 41 and 42 are formed in a tape measure form in which the back surface of the adhesive surface is subjected to a release treatment. Thereby, the release paper is not required on the back surface, and workability at the time of manufacturing the refrigerator is improved. At this time, since the second adhesive tape 42 overlaps the first adhesive tape 41 that has been subjected to the mold release process, the adhesive force of the second adhesive tape 42 on the first adhesive tape 41 becomes weak. In addition, the adhesive force between the first and second adhesive tapes 41 and 42 and the foamed heat insulating material is also weakened.

  The outer box 11 is thermally expanded by the heat of the heat radiating pipe 33. In addition, air spaces are formed between the first and second adhesive tapes 41 and 42 and the outer box 11 on both sides of the heat radiating pipe 33. The air space is filled with air taken in when the tape is applied, gas such as cyclopentane and carbon dioxide generated from the foam heat insulating material, and the outer box 11 receives deformation stress due to a pressure difference from the atmosphere due to temperature.

  Thereby, when a stress is applied in a direction in which the outer box 11 swells along the heat radiating pipe 33, the first adhesive tape 41 and the second adhesive tape 42 having the weakest adhesive force are peeled off, and this portion is the starting point. Then, the first and second adhesive tapes 41 and 42 are peeled from the foam heat insulating material. In particular, the first adhesive tape 41 crosses the heat radiating pipe 33 between narrow pitches arranged in a plurality of rows. For this reason, each heat radiating pipe 33 receives deformation stress due to gas pressure in the air space formed between the first adhesive tape 41 and the outer box 11, and horizontally (first adhesive tape 41 on the outer surface of the outer box 11. There is a problem that a undulation phenomenon occurs in which unevenness extending in the extending direction of the film is formed.

  An object of this invention is to provide the refrigerator which can reduce the wavy phenomenon of an outer box.

  In order to achieve the above object, the present invention provides a heat insulating box filled with a foam heat insulating material between an inner box and a metal outer box, and a state in which the lines extend in one direction and are arranged in parallel in a plurality of rows. A heat-dissipating pipe arranged in contact with the inner surface of the outer box, a first adhesive tape extending in a direction intersecting the extending direction of the heat-dissipating pipe and fixing the heat-dissipating pipe to the outer box, and an extending direction of the heat-dissipating pipe A second adhesive tape for fixing the heat radiating pipe to the outer box along the unadhered region with the heat radiating pipe by the second adhesive tape outside the at least one edge in the width direction of the first adhesive tape. It is characterized by providing.

  According to this configuration, the first adhesive tape extending in the direction crossing the extending direction of the heat radiating pipe is temporarily fixed to the outer box, and then the second adhesive tape is attached along the extending direction of the heat radiating pipe. A heat radiating pipe is fixed to the inner surface of the box. Thereby, the heat of the heat radiating pipe is released to the outside through the outer box. Moreover, it has an unbonded area | region with the thermal radiation pipe by a 2nd adhesive tape outside the at least one edge of the width direction of a 1st adhesive tape. For this reason, when a 2nd adhesive tape does not overlap on a 1st adhesive tape, peeling between a 1st adhesive tape and a 2nd adhesive tape does not arise. Further, when the second adhesive tape overlaps the first adhesive tape, the foamed heat insulating material is firmly and directly bonded to the inner surface of the outer box in the non-adhered region, so that the first adhesive tape and the second adhesive tape are peeled off. Progress is prevented. Thereby, peeling with the foaming heat insulating material and the 1st adhesive tape 41a and the 2nd adhesive tape 42 which start from this part is reduced.

  Further, in the refrigerator configured as described above, an air space formed between the first adhesive tape around the at least one row of the heat radiating pipes and the outer box communicates with the outside of the heat insulating box. Yes. According to this configuration, the pressure in the air space between the first adhesive tape formed around at least one row of the heat radiating pipes and the outer box matches the atmospheric pressure.

  In the refrigerator configured as described above, the first adhesive tape may be attached to the outer box on one side with respect to the heat radiating pipe and may have an open end separated from the outer box on the other side. It is a feature. According to this structure, the 1st adhesive tape stuck on the heat radiating pipe is stuck on the outer box on one side of the heat radiating pipe, and has an open end on the other side to be separated from the outer box. Thereby, a foaming heat insulating material is filled between the first adhesive tape on the other side of the heat radiating pipe and the outer box. Further, even when the foam heat insulating material is not completely filled between the first adhesive tape and the outer box, the space between the first adhesive tape and the outer box is reduced, thereby reducing the atmospheric pressure difference of the gas in the space. The influence of deformation stress is reduced. In addition, the open end of a 1st adhesive tape can be cut | disconnected and formed after sticking a 1st adhesive tape ranging over several rows of thermal radiation pipes.

  In the refrigerator configured as described above, the second pressure-sensitive adhesive tape may be stacked and stuck on the first pressure-sensitive adhesive tape, and cuts may be provided on both sides of the heat radiating pipe on the first pressure-sensitive adhesive tape. It is said. According to this structure, the 2nd adhesive tape is distribute | arranged along the 1st adhesive tape which has an open end and leaves | separates with respect to an outer box by the cut | notch formed in the both sides of the heat radiating pipe. Thereby, a foaming heat insulating material is filled between a 1st adhesive tape and an outer case through the notch | incision of a 2nd adhesive tape.

  The present invention also includes a heat insulating box body filled with a foam heat insulating material between an inner box and a metal outer box, and is in contact with the inner surface of the outer box while extending in one direction and being arranged in a plurality of rows by meandering. A heat dissipating pipe, a first adhesive tape that extends in a direction intersecting the extending direction of the heat dissipating pipe and fixes the heat dissipating pipe to the outer box, and the heat dissipating pipe along the extending direction of the heat dissipating pipe. A second adhesive tape that is fixed to the outer box, and the first adhesive tape is attached to the outer box while intersecting the heat radiating pipe, and has an open end separated from the outer box on the other side. It is characterized by. According to this structure, the 1st adhesive tape stuck on the heat radiating pipe is stuck on the outer box on one side of the heat radiating pipe, and has an open end on the other side to be separated from the outer box. Thereby, a foaming heat insulating material is filled between the first adhesive tape on the other side of the heat radiating pipe and the outer box. Further, even when the foam heat insulating material is not completely filled between the first adhesive tape and the outer box, the space between the first adhesive tape and the outer box is reduced, thereby reducing the atmospheric pressure difference of the gas in the space. The influence of deformation stress is reduced. In addition, the open end of a 1st adhesive tape can be cut | disconnected and formed after sticking a 1st adhesive tape ranging over several rows of thermal radiation pipes.

  In the refrigerator configured as described above, the second pressure-sensitive adhesive tape may be stacked and stuck on the first pressure-sensitive adhesive tape, and cuts may be provided on both sides of the heat radiating pipe on the first pressure-sensitive adhesive tape. It is said. According to this configuration, the foamed heat insulating material is filled between the first adhesive tape and the outer box through the notch of the second adhesive tape.

  According to the present invention, the first and second adhesive tapes and the foam heat insulating material are provided because the non-adhesive region with the heat radiating pipe by the second adhesive tape is provided outside at least one edge in the width direction of the first adhesive tape. The progress of peeling is suppressed. Therefore, peeling of the foam heat insulating material from the outer box can be reduced, and the wavy phenomenon of the outer box can be reduced.

  Further, according to the present invention, the first adhesive tape is attached to the outer box on one side of the heat radiating pipe and has an open end separated from the outer box on the other side. Between the outer box and the foam insulation is filled. Therefore, the air space formed between the first adhesive tape and the outer box is reduced, the stress caused by the gas filled in the air area can be reduced, and the wavy phenomenon of the outer box can be reduced.

The disassembled perspective view which shows the refrigerator of 1st Embodiment of this invention. The top view which expands and shows the outer case which concerns on the refrigerator of 1st Embodiment of this invention The top view which expands and shows a part of outer box which concerns on the refrigerator of 1st Embodiment of this invention. The perspective view which expands and shows a part of outer box which concerns on the refrigerator of 1st Embodiment of this invention. The disassembled perspective view which expands and shows a part of outer box which concerns on the refrigerator of 2nd Embodiment of this invention. The perspective view which expands and shows a part of outer box which concerns on the refrigerator of 3rd Embodiment of this invention. The top view which expands and shows the outer box which concerns on the conventional refrigerator

[First embodiment]
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing the refrigerator 1 of the present embodiment.

  The heat insulating box 10 of the refrigerator 1 has a box shape with an open front. The outer surface of the heat insulation box 10 is formed by the outer box 11, and the inner surface is formed by the inner box 12. The outer box 11 is formed in a box shape whose front is opened by a top plate 11a made of a metal plate such as an iron plate, side plates 11b and 11e, a back plate 11c and a bottom plate 11d. The top surface 11a, the side plate 11b, and the side plate 11e are integrally formed by bending a metal plate. The inner box 12 is made of a resin molded product, and is divided into a plurality of cooling chambers whose front surfaces are open. Between the outer box 11 and the inner box 12, a foam heat insulating material (not shown) such as urethane foam is filled. A machine room 61 is provided below the bottom plate 11 d, and the machine room 61 is disposed outside the heat insulating box 10.

  FIG. 2 shows a developed view of the top surface 11a, the side plate 11b, and the side plate 11e of the outer box 11. As shown in FIG. On the top plate 11a, the side plate 11b, and the side plate 11e, there are arranged heat radiating pipes 33 extending in one direction and arranged in a plurality of rows by meandering. That is, the heat radiating pipes 33 on the top plate 11a extend in the front-rear direction and are arranged in a plurality of rows in the left-right direction. The heat radiation pipes 33 on the side plates 11b and 11e extend in the vertical direction, and a plurality of rows are arranged in parallel in the front-rear direction.

  In addition, the heat radiating pipe 33 on the top plate 11a and the heat radiating pipe 33 on one side plate 11e are connected on the outer box 11, and are connected to the heat radiating pipe 33 on the side plate 11b in the machine room 61 (see FIG. 1). Link. Further, the heat radiating pipe 33 on the side plates 11b and 11e is provided with an extending portion 33a extending to the machine room 61 (see FIG. 1).

  The first adhesive tapes 41 a to 41 d extend in a direction crossing the extending direction of the heat radiating pipe 33 to temporarily fix the heat radiating pipe 33 to the inner surface of the outer box 11. A plurality of second adhesive tapes 42 are arranged along a line in the extending direction of the heat radiating pipe 33, and the heat radiating pipe 33 is fixed to the inner surface of the outer box 11 by the second adhesive tape 42. Thereby, the heat radiating pipe 33 is brought into close contact with the outer box 11, and the heat of the heat radiating pipe 33 is released to the outside through the outer box 11.

  FIG. 3 is an enlarged plan view showing a part of the side plate 11b on the machine room 61 side. One end of the second adhesive tape 42 overlaps with the first adhesive tape 41a, but does not extend outward from one end edge in the width direction of the first adhesive tape 41a. For this reason, the non-adhesion area | region B of the 2nd adhesive tape 42 and the thermal radiation pipe 33 is formed in the outer side rather than the edge of the width direction of the 1st adhesive tape 41a. Further, an adhesive region A between the second adhesive tape 42 and the heat radiating pipe 33 is formed on the outer edge of the first adhesive tape 41a on the opposite side to the non-adhered region B in the width direction.

  When the outer casing 11 is filled with a foam heat insulating material (not shown), the foam heat insulating material contacts the inner surface of the outer box 11, the heat radiating pipe 33, the first adhesive tape 41 a, and the second adhesive tape 42. On the other hand, the upper surfaces of the first adhesive tape 41a and the second adhesive tape 42 are subjected to mold release treatment, and the foamed heat insulating material has a lower adhesive strength than the outer box 11, and the first adhesive tape 41a and the second adhesive tape. Adhere to 42. The adhesive strength of the overlapping region C where the first adhesive tape 41a and the second adhesive tape 42 overlap each other is the adhesive strength between the foamed heat insulating material and the first adhesive tape 41a and the adhesive strength between the foamed heat insulating material and the second adhesive tape 42. It is even smaller than the strength.

  FIG. 4 is an enlarged perspective view showing a part of the outer box 11. Air spaces 29 a are formed between the first adhesive tape 41 a and the outer box 11 on both sides of the heat radiating pipe 33. The air space 29a is filled with gas such as cyclopentane and carbon dioxide generated from the air taken in when the tape is applied, and the foam insulation.

  The outer box 11 is thermally expanded by the heat of the heat radiating pipe 33. The outer box 11 is subjected to deformation stress by the pressure difference between the gas filled in the air space 29a and the atmosphere. Accordingly, when stress is applied in the direction in which the outer box 11 swells along the heat radiating pipe 33, the first adhesive tape 41 and the second adhesive tape 42 are easily separated in the overlapping region C where the adhesive force is weak.

  At this time, the foamed heat insulating material and the outer box 11 are firmly bonded to each other in the non-bonded region B formed outside one edge in the width direction of the first adhesive tape 41a (below the overlapping region C). At this time, since the displacement of the outer box 11 is reduced, peeling between the first adhesive tape 41a and the second adhesive tape 42 in the overlapping region C is suppressed. This suppresses the progress of the peeling between the first adhesive tape 41a and the foamed heat insulating material and the peeling between the second adhesive tape 42 and the foamed heat insulating material starting from the peeling in the overlapping region C, thereby reducing the wavy phenomenon of the outer box 11. can do.

  In FIG. 3, the rear end portions of the first adhesive tapes 41 a and 41 d are arranged so as to overlap the top surface E of the machine room 61, and are stuck on the extending portion 33 a. For this reason, the airspace 29a (refer FIG. 4) on the extension part 33a is connected to the machine room 61 outside the heat insulation box 10. FIG. Therefore, the pressure in the air space 29a on the extending portion 33a can be made to coincide with the atmospheric pressure, and the undulation phenomenon of the outer box 11 can be further reduced.

  Further, the second adhesive tape 42 is separated from the first adhesive tapes 41 b and 41 c and is attached to the outer box 11. For this reason, the non-adhesion area | region B is formed in the outer side of the both edges of the width direction of the 1st adhesive tapes 41b and 41c. Therefore, the undulation phenomenon of the outer box 11 can be further reduced.

  According to the present embodiment, since the non-bonded region B with the heat radiating pipe 33 by the second adhesive tape 42 is provided outside at least one end edge in the width direction of the first adhesive tapes 41a to 41d, the first adhesive tape 41a-41d, the progress of peeling between the second adhesive tape 42 and the foamed heat insulating material is suppressed. Therefore, peeling of the foam heat insulating material from the outer box 11 can be reduced, and the undulation phenomenon of the outer box 11 can be reduced.

  Further, since the air space 29a formed between the first adhesive tapes 41a, 41d around the heat radiating pipe 33 and the outer box 11 communicates with the outside of the heat insulating box 10, the air space 29a is formed at atmospheric pressure, The wave phenomenon of the box 11 can be further reduced.

[Second Embodiment]
FIG. 5 is an exploded perspective view showing a part of the outer box 11 according to the second embodiment in an enlarged manner. In addition, the same part as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In contrast to the first embodiment, in the second embodiment, the first adhesive tape 41b in which an unbonded region B is formed adjacent to the outer sides of both end edges in the width direction is the outer box 11 on one side with respect to the heat radiating pipe 33. Affixed to. Further, the first adhesive tape 41 b has an open end 44 on the other side with respect to the heat radiating pipe 33 and is separated from the outer box 11. The open end 44 can be formed by cutting the first adhesive tape 41b after the first adhesive tape 41b is pasted across the plurality of rows of the heat radiation pipes 33.

  Thereby, the foaming heat insulating material is filled between the first adhesive tape 41 b and the outer box 11 on the open end 44 side on the other side of the heat radiating pipe 33. For this reason, the airspace 29a is not formed on the open end 44 side, and the undulation phenomenon of the outer box 11 can be further reduced. Even when the foam insulation is not completely filled between the first adhesive tape 41b and the outer box 11, the space between the first adhesive tape 41b and the outer box 11 is reduced, so that the amount of gas in the airspace is large. The influence of deformation stress due to the pressure difference is reduced.

[Third embodiment]
FIG. 6 is an enlarged perspective view showing a part of the outer box 11 according to the third embodiment. In addition, the same part as 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In the third embodiment, as in the second embodiment, the first adhesive tapes 41 a and 41 d in which an unbonded region B is formed adjacent to the outside of one edge in the width direction are on one side with respect to the heat radiating pipe 33. Is attached to the outer box 11. Further, the first adhesive tapes 41 a and 41 d have an open end 44 on the other side with respect to the heat radiating pipe 33 and are separated from the outer box 11.

  The second adhesive tape 42 is provided with cuts 45 along both sides of the heat radiating pipe 33 on the first adhesive tapes 41a and 41d. Thereby, the foamed heat insulating material is filled between the first adhesive tapes 41 a and 41 d and the outer box 11 through the notch 45. Therefore, similarly to the second embodiment, the air space 29a is not formed on the open end 44 side, and the undulation phenomenon of the outer box 11 can be further reduced. Even when the foam insulation is not completely filled between the first adhesive tapes 41a and 41d and the outer box 11, the space between the first adhesive tapes 41a and 41d and the outer box 11 is reduced to reduce the air space. The influence of deformation stress due to the atmospheric pressure difference of the internal gas is reduced.

  According to this invention, it can utilize for the refrigerator with which the foam heat insulating material was filled in the heat insulation box.

DESCRIPTION OF SYMBOLS 10 Heat insulation box 11 Outer box 11a Top plate 11b, 11e Side plate 11c Back plate 11d Bottom plate 12 Inner box 29a Air space 33 Radiation pipe 41a-41d 1st adhesive tape 42 2nd adhesive tape 61 Machine room

Claims (4)

A heat insulating box filled with foam heat insulating material between the inner box and the metal outer box, and heat dissipation arranged in contact with the inner surface of the outer box in a state of being arranged in a plurality of rows by meandering in one direction. A pipe, a first adhesive tape extending in a direction intersecting the extending direction of the heat radiating pipe and fixing the heat radiating pipe to the outer box, and fixing the heat radiating pipe to the outer box along the extending direction of the heat radiating pipe A second adhesive tape is provided, an unbonded area between the second adhesive tape and the heat radiating pipe is provided outside one end edge in the width direction of the first adhesive tape, and the upper side is disposed on the end of the first adhesive tape. The second pressure-sensitive adhesive tape that is laminated and stuck on the outside has a portion that directly adheres to the inner surface of the outer box on the outer side of the end portion in the extending direction of the first pressure-sensitive adhesive tape .   The refrigerator according to claim 1, wherein an air space formed between the first adhesive tape and the outer box around at least one row of the heat radiating pipes communicates with the outside of the heat insulating box.   The first adhesive tape is attached to the outer box on one side with respect to the heat radiating pipe, and has an open end separated from the outer box on the other side. Refrigerator.   The refrigerator according to claim 3, wherein the second adhesive tape is stuck on the first adhesive tape and is cut along both sides of the heat radiating pipe on the first adhesive tape.

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