JP6188080B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator in which a heat radiating pipe is arranged on the inner surface of an outer box of a heat insulating box having a partition plate provided horizontally.

  Conventional refrigerators are disclosed in Patent Documents 1 and 2. The refrigerator of patent document 1 is equipped with the heat insulation box which filled the foaming heat insulating material between the inner box of the resin molded product, and the metal outer box. A partition plate for partitioning into a plurality of storage chambers is installed in the heat insulation box. Openings facing each other are provided on the side surface of the partition plate and the inner box, and a foamed heat insulating material supplied between the inner box and the outer box is filled into the partition plate through the opening. Thereby, it is not necessary to store a shaping | molding heat insulating material beforehand in a partition plate, and can aim at the reduction in the number of parts of a refrigerator, and an assembly improvement.

  Moreover, the refrigerator of patent document 2 has a heat radiating pipe arranged on the inner surface of the side plate that forms the side surface of the outer box. The heat radiating pipes extend in the vertical direction and are arranged in parallel in the front-rear direction by meandering. A heat conductive adhesive is provided between the heat radiating pipe and the side plate. The heat radiation of the heat radiating pipe is performed through a heat conductive adhesive and an outer box.

  FIG. 13 shows a top cross-sectional view of a conventional refrigerator in which a heat radiating pipe is arranged on the inner surface of the side plate of the outer box, and foam insulation is filled between the outer box and the inner box. Yes. In the same figure, the horizontal cross section which passes along a partition plate is shown. A heat radiating pipe 15 extending in the vertical direction and arranged in parallel in the front-rear direction by meandering is disposed in contact with the side plate 3a of the metal outer box 3. The heat radiating pipe 15 is fixed to the side plate 3a by an adhesive tape 21 such as an aluminum tape.

  The inner box 4 of the resin molded product having an open front surface is arranged with a predetermined heat insulation thickness with respect to the outer box 3. A reinforcing portion 11 is provided at the front end portion of the partition plate 10, and the rear portion of the reinforcing portion 11 is hollow before filling with the foam heat insulating material 5. Engaging claws 11 a that engage with the inner surface of the inner box 4 protrude from both side ends of the reinforcing portion 11. Due to the engagement of the engaging claws 11a, the partition plate 10 is bridged to the inner box 4 with the side surface portion 10b contacting the inner surface of the inner box 4. An opening 10a is opened at the front part of the side surface part 10b of the partition plate 10, and an opening 4a facing the opening 10a is opened in the inner box 4.

  When the foam heat insulating material 5 is filled, the heat insulating box 2 is installed with the opening surface facing downward. And the undiluted | stock solution of foam heat insulating materials 5, such as urethane foam, is inject | poured between the outer box 3 and the inner box 4 through the injection hole provided in the back plate (not shown) of the outer box 3 distribute | arranged upwards. . The stock solution of the foam heat insulating material 5 is supplied into the partition plate 10 through the openings 4a and 10a. Foaming of the foam heat insulating material 5 injected into the heat insulating box 2 proceeds with time. Thereby, the foam heat insulating material 5 is filled between the outer box 3 and the inner box 4 and in the partition plate 10.

Japanese Patent Laid-Open No. 10-259985 (pages 2-6, FIG. 9) JP-A-2-233971 (page 3-4, FIG. 8)

  Internal pressure is applied to the outer box 3 and the inner box 4 by the progress of foaming of the foam heat insulating material 5 injected into the heat insulating box 2. As a result, pressure is applied to the outer box 3 to expand outward and the inner box 4 to expand inward. In order to prevent deformation of the outer box 3 and the inner box 4 due to this pressure, a predetermined jig is installed on the outer surface of the outer box 3 and the inner surface of the inner box 4.

  When foaming of the foam heat insulating material 5 is almost completed, the heat insulating box 2 is taken out from the jig. The heat insulating box 2 taken out from the jig is heated to a high temperature (60 ° C. to 70 ° C.) by the foam heat insulating material 5 due to the foaming reaction, and is gradually cooled to room temperature.

  For example, in the case of urethane foam, the foam heat insulating material 5 is often a material that easily undergoes heat shrinkage such as a linear shrinkage rate of about 0.5% during the cooling process. For this reason, as shown in FIG. 14, the side plate 3a is pulled inward by the foam heat insulating material 5 contracted in the cooling process of the foam heat insulating material 5 and deformed, resulting in a problem of appearance failure.

  Moreover, the adhesive tape 21 which fixes the heat radiating pipe 15 is provided with a release agent on the back surface which is the opposite surface of the adhesive surface, so that the adhesive strength with the foam heat insulating material 5 is weaker than that of the side plate 3a. In this case, as shown by an arrow A in FIG. 14, the side plate 3 a is pulled inward due to the shrinkage of the foam heat insulating material 5, and the foam heat insulating material 5 is separated on the adhesive tape 21 to form a void 18. As a result, a wavy phenomenon occurs in which the side plate 3a meanders and deforms in a horizontal plane.

  In particular, since the thickness of the foam heat insulating material 5 on the side plate 3a increases in the left-right direction passing through the openings 4a and 10a, the shrinkage amount of the foam heat insulating material 5 in the vicinity of the openings 4a and 10a increases. For this reason, there is a problem that the deformation of the side plate 3a facing the vicinity of the openings 4a and 10a becomes large, and the appearance defect of the refrigerator is particularly noticeable at the location.

  Patent Document 2 states that a heat conductive adhesive having flexibility is provided between the heat radiating pipe and the side plate. Thereby, the heat conductive adhesive arrange | positioned between the side plate pulled by the foaming heat insulating material in the cooling process and the heat radiating pipe contracts. For this reason, the protrusion of the part which faced the heat radiating pipe of the side plate can be prevented, and deformation of the side plate can be prevented.

  However, since the skeleton of the heat insulating box is formed by the heat radiating pipe, there is a problem that the strength of the heat insulating box is lowered when a thermally conductive adhesive having flexibility is interposed between the side plate and the heat radiating pipe. In addition, since the heat conductive adhesive is expensive, there is a problem that the cost of the refrigerator becomes high when used for bonding a long-distance heat radiating pipe.

  An object of this invention is to provide the refrigerator which can suppress an external appearance defect by suppressing a strength fall and a cost increase.

  In order to achieve the above object, the present invention provides a heat insulating box body filled with a foam heat insulating material between an inner box of a resin molded product and a metal outer box, and a plurality of storages disposed horizontally in the heat insulating box body. A partition plate for partitioning the chamber, a heat dissipating pipe arranged in contact with the inner surface of the side plate forming the side surface of the outer box and extending in the vertical direction and arranged in parallel in the front-rear direction by meandering; A first opening that is provided with a plurality of rows of first adhesive tapes in the front-rear direction that extends in the up-down direction and fixes the heat-dissipating pipe to the side plate, and that opens at the front portion of the side surface of the partition plate. In the refrigerator in which the foam heat insulating material is filled in the partition plate through the second opening that opens to the inner box opposite to the first opening and the first opening, the foam heat insulating material is in contact with the side plate. Also reduces the adhesive strength between the foam insulation and the side plate Provide a processor which management is performed on a front portion of the side plate, wherein the processing unit is characterized in that it is provided between the first adhesive tape that faces the side surface of the partition plate.

  According to this configuration, the stock solution of the foam heat insulating material injected between the outer box and the inner box flows into the partition plate via the first opening and the second opening and foams. The adhesive strength to the foamed heat insulating material is high on the side plate between the first adhesive tapes before and after being arranged along the heat radiating pipe, and the adhesive strength to the foamed heat insulating material is lower on the first adhesive tape than on the side plate. Moreover, the adhesive strength with respect to a foaming heat insulating material is low in the process part provided between the 1st adhesive tapes which oppose the side surface of a partition plate than on a side plate. Thereby, a part with low adhesive strength with respect to a foaming heat insulating material becomes large in the area | region where a side plate opposes the side surface of a partition plate. For this reason, it becomes difficult for a side plate to be pulled by shrinkage | contraction of a foam heat insulating material, and a deformation | transformation of a side plate is reduced.

  Further, the present invention is characterized in that, in the refrigerator having the above-described configuration, the processing section is formed by attaching a second adhesive tape in which a release agent is disposed on the opposite surface of the adhesive surface, or applying an elastic adhesive. .

  Further, the present invention provides a heat insulating box filled with a foam heat insulating material between an inner box of a resin molded product and a metal outer box, and a partition plate that is horizontally provided in the heat insulating box and partitioned into a plurality of storage chambers. A heat dissipating pipe disposed in contact with the inner surface of the side plate forming the side surface of the outer box and extending in the vertical direction and arranged in parallel in the front-rear direction by meandering, and a release agent disposed on the opposite surface of the adhesive surface And a plurality of rows of first adhesive tapes extending in the front-rear direction to extend in the vertical direction and fix the heat radiating pipe to the side plate, and open to the front portion of the side surface of the partition plate. In the refrigerator in which the foamed heat insulating material is filled in the partition plate through the second opening that opens to the inner box opposite to the inner box, the adhesive strength to the foamed heat insulating material is increased more than directly above the first adhesive tape. A processing part to be processed is provided in the front part of the side plate, Is characterized in that management unit is provided in the region of the first adhesive tape that faces the side surface of the partition plate.

  According to this configuration, the stock solution of the foam heat insulating material injected between the outer box and the inner box flows into the partition plate via the first opening and the second opening and foams. The adhesive strength to the foamed heat insulating material is high on the side plate between the first adhesive tapes before and after being arranged along the heat radiating pipe, and the adhesive strength to the foamed heat insulating material is lower on the first adhesive tape than on the side plate. Moreover, in the process part provided in the area | region of the 1st adhesive tape which opposes the side surface of a partition plate, the adhesive strength with respect to a foaming heat insulating material is higher than immediately above a 1st adhesive tape. Thereby, the contraction force applied by the contraction of the foamed heat insulating material is dispersed in the region of the side plate facing the side surface of the partition plate.

  Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, the processing unit is formed by a dividing part for dividing the first adhesive tape or a notch part for cutting the first adhesive tape into a narrow width.

  Moreover, this invention has the reinforcement part bridged by the said inner box adjacent to the front of the said foam heat insulating material with which the said partition plate is filled inside in the refrigerator of the said structure, The said process part is the said reinforcement part. It is characterized by being arranged behind.

  Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, an inlet for the foam heat insulating material is provided on a back surface of the outer box.

  Further, the present invention provides a heat insulating box filled with a foam heat insulating material between an inner box of a resin molded product and a metal outer box, and a partition plate that is horizontally provided in the heat insulating box and partitioned into a plurality of storage chambers. A heat dissipating pipe disposed in contact with the inner surface of the side plate forming the side surface of the outer box and extending in the vertical direction and arranged in parallel in the front-rear direction by meandering, and a release agent disposed on the opposite surface of the adhesive surface And a plurality of rows of first adhesive tapes extending in the front-rear direction to extend in the vertical direction and fix the heat radiating pipe to the side plate, and open to the front portion of the side surface of the partition plate. In the refrigerator in which the foamed heat insulating material is filled in the partition plate through a second opening that opens to the inner box opposite to the inner box, an elastic member is provided in a front portion of the side plate, and the elastic member is provided in the partition It is provided between the first adhesive tapes facing the side surfaces of the plate. That.

  According to this invention, the process part which performed the process which reduces the adhesive strength between a foam heat insulating material and a side plate is provided in the front part of the side plate, and the 1st adhesive tape with which a process part opposes the side surface of a partition plate. Between. Thereby, it becomes difficult to pull a side plate by shrinkage | contraction of a foam heat insulating material, and a deformation | transformation of a side plate can be reduced and the external appearance defect of a refrigerator can be prevented.

  Further, according to the present invention, the processing part that has been subjected to a process for increasing the adhesive strength to the foamed heat insulating material from directly above the first adhesive tape along the heat radiating pipe is provided at the front part of the side plate, and the processing part is provided on the partition plate. It is provided in the area | region of the 1st adhesive tape which opposes a side surface. Thereby, the shrinkage force applied to the region of the side plate facing the side surface of the partition plate due to the shrinkage of the foam heat insulating material is dispersed, so that the deformation of the side plate can be reduced and the appearance defect of the refrigerator can be prevented.

The perspective view which shows the heat insulation box of the refrigerator of 1st Embodiment of this invention. The perspective view which shows the state at the time of attaching the side plate and top plate of the heat insulation box of the refrigerator of 1st Embodiment of this invention. The perspective view which shows the state at the time of foaming heat insulating material filling of the refrigerator of 1st Embodiment of this invention. The expanded view which shows the top plate and side plate of the outer case of the refrigerator of 1st Embodiment of this invention. Detailed view of part H in FIG. Top view sectional drawing which passes along the partition plate of the refrigerator of 1st Embodiment of this invention. The expanded view which shows the top plate and side plate of the outer case of the refrigerator of 2nd Embodiment of this invention. Detailed view of part K in FIG. The top view which shows the state at the time of formation of the division part of the refrigerator of 2nd Embodiment of this invention Top sectional drawing which passes along the partition plate of the refrigerator of 2nd Embodiment of this invention. The side view which looked at the vicinity of the processing part of the refrigerator of a 3rd embodiment of the present invention from the inside. The expanded view which shows the top plate and side plate of the outer case of the refrigerator of 4th Embodiment of this invention. Cross-sectional top view through the partition plate when foaming the conventional refrigerator foam insulation Cross-sectional top view through the partition plate after cooling the foam insulation of a conventional refrigerator

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. Drawing 1 is a front view showing the heat insulation box of the refrigerator of a 1st embodiment. The heat insulating box 2 of the refrigerator 1 is opened at the front, and a foam heat insulating material 5 (see FIG. 6) such as urethane foam is filled between an inner box 4 of a resin molded product and a metal outer box 3 such as a steel plate. Formed. Both side surfaces of the outer box 3 are formed by a pair of side plates 3a, and the top surface is formed by a top plate 3b. The back surface of the outer box 3 is formed by a back plate 3c (see FIG. 3), and the bottom surface is formed by a bottom plate 3d (see FIG. 2).

  In the heat insulation box 2, a plurality of partition plates 10 and 12 made of a resin molded product are provided horizontally, and the refrigerator compartment 6, the freezer compartment 7 and the vegetable compartment 8 are provided in order from above by the partition plates 10 and 12. . A machine room 9 (see FIG. 2) is provided behind the vegetable room 8. Front openings of the refrigerator compartment 6, the freezer compartment 7, and the vegetable compartment 8 are opened and closed by doors (not shown). The upper partition plate 10 is filled with the foam heat insulating material 5 filled in the heat insulating box 2 at the same time, and the lower partition plate 12 is mounted on the heat insulating box 2 with a heat insulating material such as polystyrene foam.

  FIG. 2 is a perspective view showing a state when the side plate 3a and the top plate 3b of the heat insulating box 2 are attached. Both side plates 3 a are connected at the upper ends by the top plate 3 b, bent so as to cover the inner box 4, and arranged on the inner box 4 with a predetermined heat insulation thickness. A heat radiating pipe 15 is disposed on the inner surfaces of the side plate 3a and the top plate 3b.

  FIG. 3 is a perspective view showing a state when the foam heat insulating material 5 is filled. The heat insulation box 2 is installed with the opening surface facing downward. And the undiluted | stock solution (a polyol and isocyanate in the case of foaming urethane) of the foam heat insulating material 5 is inject | poured through the injection hole 3e provided in the right-and-left edge part of the backplate 3c of the outer box 3 distribute | arranged upwards. Thereby, the foam heat insulating material 5 is filled between the outer box 3 and the inner box 4 and inside the partition plate 10 (see FIG. 1) as described later.

  4 shows a developed view of the side plate 3a and the top plate 3b of the outer box 3. As shown in FIG. The heat radiating pipe 15 arranged on the side plate 3a extends in the vertical direction and is arranged in parallel in the front-rear direction by meandering. The heat radiating pipes arranged on the top plate 3b extend in the front-rear direction and are arranged in parallel in the left-right direction by meandering.

  The heat radiating pipe 15 is fixed to the outer box 3 by an adhesive tape 21 (first adhesive tape). The adhesive tape 21 is made of an aluminum tape or the like in which an adhesive surface is formed on one surface of a good thermal conductor such as an aluminum foil and a release agent is disposed on the back surface opposite to the adhesive surface. Thereby, the heat radiating pipe 15 is arranged in contact with the outer box 3, and the heat radiating from the heat radiating pipe 15 is performed via the adhesive tape 21 having the good heat conductor and the outer box 3. The adhesive tape 21 on the side plate 3a extends in the vertical direction along the heat radiating pipe 15, and is provided in a plurality of rows in the front-rear direction. The adhesive tape 21 on the top plate 3b extends in the front-rear direction along the heat radiating pipe 15, and is provided in a plurality of rows in the left-right direction.

  Adhesive tapes 23 and 24 are attached to the side plate 3a so as to cross over the heat radiating pipes 15 arranged in front and rear. The adhesive tapes 23 and 24 are made of aluminum tape or the like in which an adhesive surface is formed on one surface of a good thermal conductor such as an aluminum foil and a release agent is disposed on the back surface opposite to the adhesive surface.

  The adhesive tape 23 extends in the front-rear direction below the side plate 3a, and the adhesive tape 24 extends in the front-rear direction above the side plate 3a. A plurality of adhesive tapes 21 arranged side by side in the front-rear direction are stuck on the adhesive tape 23 and the adhesive tape 24. Since the adhesive tapes 23 and 24 have a weak adhesive force due to the release agent, a non-adhesive portion (not shown) is formed between the adhesive tape 21 and the foam heat insulating material 5. For this reason, the space part 19 (refer FIG. 6) formed in the both sides of the heat radiating pipe 15 inside the adhesive tape 21 is connected to the space part 19 formed inside the adhesive tape 21 of the last row through a non-bonding part. .

  The space portions 19 formed on both sides of the heat radiating pipe 15 are filled with carbon dioxide gas generated when the foam heat insulating material 5 is foamed. Carbon dioxide has a higher solubility in foamed insulation 5 such as urethane foam than in air and nitrogen or oxygen. For this reason, the inside of the space 19 is depressurized because the carbon dioxide gas permeates and flows out of the foam heat insulating material 5 more rapidly than the air permeates through the foam heat insulating material 5 and flows in. Thereby, the deformation | transformation which the outer case 3 dents inside along the thermal radiation pipe 15 arises.

  However, the space portion 19 communicates with the space portion 19 formed inside the adhesive tape 21 in the last row by the adhesive tapes 23 and 24. Since the last row of the heat radiating pipe 15 protrudes from the foam heat insulating material 5 and reaches the machine room 9, the space 19 formed inside the last row of the adhesive tape 21 extends along the heat radiating pipe 15. It can easily communicate with the outside air. As described above, the plurality of space portions 19 arranged in parallel in the front-rear direction can also communicate with the outside air through the space portion 19 formed inside the last-line adhesive tape 21, so that the deformation of the outer box 3 can be performed. Can be prevented.

  In addition, an adhesive tape 22 (second adhesive tape) is adhered between the adhesive tapes 21 that fix the heat radiating pipe 15 on the side plate 3a. A processing unit 31 to be described later is formed by the adhesive tape 22.

  FIG. 5 is a detailed view of the H part of FIG. 4 and shows a side view of the vicinity of the processing unit 31 as viewed from the inside. The adhesive tape 22 is provided between the plurality of rows of adhesive tapes 21 before and after being disposed along the heat radiating pipe 15 and at a position facing the side surface portion 10 b (see FIG. 6) of the partition plate 10. The adhesive tape 22 is made of an aluminum tape, a craft tape, or the like in which an adhesive surface is formed on one surface of a good thermal conductor (aluminum foil or the like) or a paper substrate, and a release agent is disposed on the back surface opposite to the adhesive surface. Since the pressure-sensitive adhesive tape 22 includes a release agent, the processing section 31 that has been subjected to a process of lowering the adhesive strength between the foamed heat insulating material 5 and the side surface plate 3a than the case where the foamed heat insulating material 5 is in contact with the side surface plate 3a. 22 is formed.

  FIG. 6 shows a cross-sectional top view through the partition plate 10 of the heat insulation box 2. A reinforcing portion 11 is provided at the front end portion of the partition plate 10 adjacent to the front of the foam heat insulating material 5. The processing part 31 formed by the adhesive tape 22 is provided at least in front of the side plate 3a behind the reinforcing part 11.

  Engaging claws 11 a that engage with the inner surface of the inner box 4 protrude from both side ends of the reinforcing portion 11. Due to the engagement of the engaging claws 11a, the partition plate 10 is bridged to the inner box 4 with the side surface portion 10b contacting the inner surface of the inner box 4. An opening 10a (first opening) is opened at the front part of the side surface part 10b of the partition plate 10, and an opening 4a (second opening) facing the opening 10a is opened in the inner box 4. The partition plate 10 before filling with the foam heat insulating material 5 is formed to be hollow behind the reinforcing portion 11, and the foam heat insulating material 5 is supplied through the openings 4a and 10a.

  The stock solution of the foam heat insulating material 5 injected from the injection hole 3 e (see FIG. 3) into the heat insulating box 2 installed with the opening surface facing downward flows down between the outer box 3 and the inner box 4. And the undiluted | stock solution of the foam heat insulating material 5 flows in into the partition plate 10 from opening part 4a, 10a distribute | arranged to the lower part in the installation state. When the openings 4a and 10a are provided in the front part of the heat insulation box 2, the openings 4a and 10a are arranged in the lower part in the installed state at the time of filling, so the stock solution of the foam heat insulating material 5 quickly flows into the partition plate 10. Can be made.

  Foaming of the foam heat insulating material 5 supplied between the outer box 3 and the inner box 4 and in the partition plate 10 proceeds with time. At this time, a predetermined jig is installed on the outer surface of the outer box 3 and the inner surface of the inner box 4 to prevent the outer box 3 and the inner box 4 from being deformed.

  When the stock solution of the foam heat insulating material 5 is injected and a predetermined time elapses, the heat insulating box 2 is taken out from the jig. In the heat insulating box 2 taken out from the jig, the foam heat insulating material 5 is at a high temperature, and then the foam heat insulating material 5 is gradually cooled to room temperature and stabilized. Thereby, the foam heat insulating material 5 is filled between the outer box 3 and the inner box 4 and in the partition plate 10.

  In the cooling process, the side plate 3 a is pulled inward due to the shrinkage of the foam heat insulating material 5 as in FIG. 14 described above. At this time, since the thickness of the foam heat insulating material 5 on the side plate 3a increases in the left-right direction passing through the openings 4a and 10a, the shrinkage amount of the foam heat insulating material 5 near the openings 4a and 10a becomes larger. Further, in the partition plate 10, the flow direction during foaming of the foam heat insulating material 5 occurs in a direction toward the upper side (direction of the back plate 3 c) and a direction toward the inner side of the partition plate 10 (left-right direction). The bubbles generated during foaming of the foam heat insulating material 5 are aligned along the flow direction, and the amount of shrinkage to the inside is further increased by the bubbles aligned in the left-right direction.

  On the other hand, the adhesive tapes 21 and 22 are provided with a release agent on the back surface opposite to the adhesive surface, and the adhesive strength with the foamed heat insulating material 5 is weaker than directly above the side plate 3a.

  For this reason, when the foam heat insulating material 5 tries to pull the side plate 3a inward due to contraction, the foam heat insulating material 5 is separated on the adhesive tapes 21 and 22 to form the gap 18 as shown in FIG. At this time, since the adhesive tape 22 is disposed between the adhesive tapes 21, the area of the foam heat insulating material 5 that is in direct contact with the side plate 3a is reduced. Thereby, it becomes difficult to apply the shrinkage force of the foam heat insulating material 5 directly to the side surface plate 3a facing the side surface portion 10b of the partition plate 10, and deformation due to meandering of the side surface plate 3a is reduced.

  According to this embodiment, the process part 31 which performed the process which reduces the adhesive strength between the foam heat insulating material 5 and the side plate 3a is provided in the front part of the side plate 3a. The processing unit 31 is provided on the side plate 3 a facing the side surface 10 b of the partition plate 10 and between the front and rear adhesive tapes 21 (first adhesive tapes) along the heat radiating pipe 15. Thereby, even if the foam heat insulating material 5 contracts, the side plate 3a is hardly pulled. Therefore, the deformation of the side plate 3a can be reduced to prevent the appearance failure of the refrigerator 1.

  The process part 31 should just be provided in the front part of the side plate 3a facing the side part 10b of the partition plate 10, and may be provided between the adhesive tapes 21 of another part. However, if the processing unit 31 is provided only at the front portion of the side plate 3a facing the partition plate 10, the formation of the gap 18 can be reduced, so that it is possible to suppress a decrease in heat dissipation and structural strength of the heat insulating box 2. it can.

  Moreover, the processing part 31 which performs the process which reduces the adhesive strength between the foam heat insulating material 5 and the side surface board 3a of the adhesive tape 22 (2nd adhesive tape) which has arrange | positioned the peeling agent to the back surface which is the opposite surface of an adhesive surface. It can be easily realized by sticking.

  Further, the vicinity of the peripheral edge of the side surface plate 3a is not easily deformed because of its high strength, and the portion facing the reinforcing portion 11 has a low shrinkage force of the foam heat insulating material 5 because the thickness of the foam heat insulating material 5 is small. For this reason, the process part 31 of the unnecessary part can be omitted by arrange | positioning the process part 31 in the back from the reinforcement part 11 away from the front end of the side plate 3a. Accordingly, it is possible to suppress a reduction in heat dissipation and structural strength of the heat insulating box 2.

  In the present embodiment, the processing unit 31 may be formed by applying an elastic adhesive. For example, a synthetic rubber-based hot melt adhesive used as an elastic adhesive has elasticity even when the temperature drops to room temperature. For this reason, even if it adheres to the shrinking foam heat insulating material 5 and is pulled, the synthetic rubber-based hot melt adhesive is elastically deformed, so that the shrinkage force of the foam heat insulating material 5 is not directly applied to the side plate 3a. Therefore, deformation due to meandering of the side plate 3a is reduced.

  In the present embodiment, an elastic member such as a butyl tape may be attached to the position of the processing unit 31 instead of the processing unit 31 formed of the adhesive tape 22. The elastic member is fixed to the shrinking foam heat insulating material 5 and pulled, but since it is elastically deformed, the meandering of the side plate 3a can be reduced.

Second Embodiment
Next, FIG. 7 shows a development view of the side plate 3a and the top plate 3b of the second embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, instead of the processing unit 31 (see FIG. 4) provided between the adhesive tapes 21, a processing unit 32 is provided in the area of the adhesive tape 21. Other parts are the same as those in the first embodiment.

  FIG. 8 is a detailed view of a portion K in FIG. 7 and shows a side view of the vicinity of the processing unit 32 as viewed from the inside. The pressure-sensitive adhesive tape 21 is divided at a position facing the partition plate 10, and a divided portion 21 a where the pressure-sensitive adhesive tape 21 is not provided is formed. The foam heat insulating material 5 contacts the side plate 3a on the dividing portion 21a. Thereby, the process part 32 which performed the process which increases the adhesive strength with respect to the foaming heat insulating material 5 within the width | variety of the adhesive tape 21 rather than immediately above the adhesive tape 21 is formed by the parting part 21a.

  In FIG. 7 described above, the processing unit 32 may be provided on each of the plurality of adhesive tapes 21 arranged in front and rear, but at least the adhesive for fixing the heat radiating pipes 15 arranged in the second and subsequent rows from the front row. It may be formed in the area of the tape 21. In this embodiment, the process part 32 is not formed in the adhesive tape 21 of the forefront row and the last row.

  The space part 19 (see FIG. 6) of the adhesive tape 21 where the processing part 32 is not formed is connected vertically. For this reason, the upper space portion 19 (the side on which the adhesive tape 24 is disposed) communicates with the lower space portion 19 and communicates with the outside air via the adhesive tape 23. At this time, it is more preferable that the adhesive tape 21 in which the processing unit 32 is not formed is the front-most or last-line adhesive tape 21.

  As described above, the space 19 of the adhesive tape 21 in the last row extends into the machine room 9 and is connected to the outside air. For this reason, if the space part 19 of the upper part (the side in which the adhesive tape 24 is arrange | positioned) is connected via the space part 19 of the adhesive tape 21 of the last row, it can be connected with external air at a shorter distance.

  Moreover, the opening parts 4a and 10a are provided in the front part of the inner box 4 and the partition plate 10, and the adhesive tape 21 of the last row will be the most distant position from the opening parts 4a and 10a. For this reason, the adhesive tape 21 in the last row is not easily affected by the thickness of the foam heat insulating material 5 or the bubbles generated when the foam heat insulating material 5 is foamed. Therefore, it is possible to reduce the risk of deformation of the side plate 3a due to the formation of the processing portion 32 in the adhesive tape 21 in the last row.

  A reinforcing portion 11 is provided at the front end portion of the partition plate 10. In addition, in many cases, the side surface plate 3a is provided with a heat radiating pipe 15 over a wide range in the front-rear direction to dissipate heat over a wide range. Therefore, the region in front of the heat radiating pipes 15 arranged in the foremost row is hardly deformed due to the proximity from the front end of the side plate 3a and the reinforcing effect of the reinforcing portion 11 described above.

  That is, an opening 10a (first opening) is opened at the front part of the side surface 10b of the partition plate 10, and an opening 4a (second opening) facing the opening 10a is opened in the inner box 4. However, the deformation suppressing effect of the side plate 3a by providing the processing unit 32 in the region of the heat radiating pipe 15 arranged in the front row is small.

  On the other hand, as described above, it is useful for preventing deformation of the outer case 3 to communicate the space portions 19 formed on both sides of the heat radiating pipe 15 with the outside air. Therefore, the adhesive tape 21 that fixes the heat radiation pipe 15 in the front row is not provided with the processing portion 32, so that the space portion 19 and the lower portion (the adhesive tape 23) on the upper side (the side where the adhesive tape 24 is disposed). It is possible to communicate with the outside air by reliably communicating with the space portion 19 on the side where is disposed) with the adhesive tape 21 in the front row.

  FIG. 9 is a side view showing a state when the dividing portion 21a is formed. On the side plate 3a, an adhesive tape 25 that crosses the heat radiating pipe 15 is attached at a position where the dividing portion 21a is formed, and the adhesive tape 21 is attached so as to cross the adhesive tape 25. Thereafter, the adhesive tape 25 is peeled off, whereby the dividing portion 21a can be easily formed as shown in FIG.

  FIG. 10 shows a cross-sectional top view through the processing section 32 of the heat insulating box 2. A reinforcing portion 11 is provided adjacent to the front of the foam heat insulating material 5 at the front end of the partition plate 10, and a dividing portion 21 a (see FIG. 8) provided along the heat radiating pipe 15 is behind the reinforcing portion 11. It is provided at least at the front part of the face plate 3a.

  In the process of cooling the foam heat insulating material 5 supplied between the outer box 3 and the inner box 4 and in the partition plate 10, the side plate 3 a is pulled inward by contraction of the foam heat insulating material 5. At this time, the foam heat insulating material 5 is separated on the adhesive tape 21, but since the foam heat insulating material 5 is in contact with the side plate 3a at the dividing portion 21a, the side plate 3a is pulled inward together with the heat radiating pipe 15. Thereby, the contraction force applied to the portion of the side plate 3a facing the side portion 10b of the partition plate 10 is dispersed, and deformation due to meandering of the side plate 3a is reduced. Therefore, the appearance defect of the refrigerator 1 can be prevented.

  According to this embodiment, the process part 32 which performed the process which increases the adhesive strength with respect to the foam heat insulating material 5 rather than just on the adhesive tape 21 (1st adhesive tape) is provided in the front part of the side plate 3a. Further, the processing unit 32 is provided in the region of the adhesive tape 21 that faces the side surface 10 b of the partition plate 10. Thereby, the shrinkage force applied to the portion of the side surface plate 3a facing the side surface portion 10b of the partition plate 10 of the side surface plate 3a due to the shrinkage of the foam heat insulating material is dispersed, and deformation due to meandering of the side surface plate 3a is reduced.

  The process part 32 should just be provided in the front part of the side plate 3a facing the side part 10b of the partition plate 10, and you may provide the process part 32 with respect to the adhesive tape 21 of another part. However, if the processing unit 32 is provided only on the front portion of the side plate 3a facing the partition plate 10, it is possible to suppress a decrease in heat dissipation of the heat insulating box 2 due to the removal of the adhesive tape 21.

  Moreover, the process part 32 which performed the process which increases the adhesive strength with respect to the foaming heat insulating material 5 rather than just on the adhesive tape 21 can be easily implement | achieved by the parting part 21a formed by parting of the adhesive tape 21. FIG.

  Further, by disposing the processing unit 32 away from the front end of the side plate 3a and behind the reinforcing unit 11, unnecessary processing units 32 can be omitted. Accordingly, it is possible to suppress a decrease in heat dissipation of the heat insulating box 2 due to the removal of the adhesive tape 21.

<Third Embodiment>
Next, FIG. 11 shows a side view of the vicinity of the processing unit 32 of the third embodiment viewed from the inside. For convenience of explanation, the same reference numerals are given to the same parts as those in the second embodiment shown in FIGS. This embodiment differs in the structure of the process part 32 with respect to 2nd Embodiment. Other parts are the same as those of the second embodiment.

  The adhesive tape 21 is notched by the notch 21 b at a position facing the side surface portion 10 b of the partition plate 10, so that the notch 21 b is formed within the width of the adhesive tape 21. In the notch portion 21b, the foam heat insulating material 5 is in direct contact with the side plate 3a. Thereby, the process part 32 which performed the process which increases the adhesive strength with respect to the foaming heat insulating material 5 within the width | variety of the adhesive tape 21 rather than immediately above the adhesive tape 21 is formed by the notch part 21b. Therefore, the same effect as in the second embodiment can be obtained.

  In this embodiment, it replaces with the parting part 21a of 2nd Embodiment, and it is set as the notch part 21b. Thereby, even if the notch part 21b is provided, the space part 19 can be formed in the both sides of the heat radiating pipe 15. For this reason, in order to make the space part 19 of the upper part (the side where the adhesive tape 24 is arrange | positioned) and the space part 19 of the lower part (the side where the adhesive tape 23 is arrange | positioned) communicate, the process part 32 (notch part). It is not necessary to provide the adhesive tape 21 that does not form 21b), and the manufacturing process is not complicated.

<Fourth embodiment>
Next, FIG. 12 shows a development view of the side plate 3a and the top plate 3b of the fourth embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those of the second embodiment shown in FIGS. In the present embodiment, a plurality of processing units 32 are provided in the direction in which the adhesive tape 21 extends. Other parts are the same as those of the second embodiment.

  The lower partition plate 12 (see FIG. 1) is simultaneously filled with the foam heat insulating material 5 filled in the heat insulation box 2 in the same manner as the upper partition plate 10. The processing unit 32 is provided to face the partition plate 10 and the partition plate 12, respectively. Thereby, the effect similar to 2nd Embodiment can be acquired. In addition, you may form the process part 32 by the notch part 21b (refer FIG. 11) similarly to 3rd Embodiment.

  An adhesive tape 26 similar to the adhesive tape 23 is attached between the upper and lower processing parts 32. The adhesive tape 26 crosses over the heat radiating pipe 15 arranged side by side. Thereby, the space part 19 (refer FIG. 6) formed between the upper and lower process parts 32 can be connected with external air.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the refrigerator provided with the heat sink pipe distribute | arranged to the partition plate with which a foaming heat insulating material is filled, and the inner surface of an outer box.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat insulation box 3 Outer box 3a Side plate 3b Top plate 3c Back plate 3d Bottom plate 3e Injection hole 4 Inner box 4a Opening 5 Foam insulation 6 Refrigeration room 7 Freezer room 8 Vegetable room 9 Machine room 10, 12 Partition Plate 10a Opening portion 10b Side surface portion 11 Reinforcement portion 15 Heat radiation pipe 21, 22, 23, 24, 25, 26 Adhesive tape 21a Dividing portion 21b Notch portion 31, 32 Processing portion

Claims (5)

  A heat insulating box filled with a foam heat insulating material between an inner box of the resin molded product and a metal outer box, a partition plate which is horizontally placed in the heat insulating box and partitioned into a plurality of storage chambers, and the outer box A heat dissipating pipe that is arranged in contact with the inner surface of the side plate that forms the side surface, extends in the vertical direction and is arranged in parallel in the front-rear direction by meandering, and a release agent is arranged on the opposite side of the adhesive surface and extends in the vertical direction A plurality of rows of first adhesive tapes in the front-rear direction for fixing the heat radiating pipe to the side plate, and facing the first opening and the first opening that open at the front of the side of the partition plate In the refrigerator in which the foam heat insulating material is filled in the partition plate through the second opening that opens in the inner box, the foam heat insulating material and the side plate are more than in the case where the foam heat insulating material is in contact with the side plate. The processing part to be subjected to the process of reducing the adhesive strength between the side plates Provided parts, refrigerator wherein the processing unit is characterized in that provided between a first adhesive tape which faces a side surface of the partition plate.   The refrigerator according to claim 1, wherein the processing unit is formed by sticking a second adhesive tape in which a release agent is disposed on the opposite surface of the adhesive surface, or applying an elastic adhesive.   A heat insulating box filled with a foam heat insulating material between an inner box of the resin molded product and a metal outer box, a partition plate which is horizontally placed in the heat insulating box and partitioned into a plurality of storage chambers, and the outer box A heat dissipating pipe that is arranged in contact with the inner surface of the side plate that forms the side surface, extends in the vertical direction and is arranged in parallel in the front-rear direction by meandering, and a release agent is arranged on the opposite side of the adhesive surface and extends in the vertical direction A plurality of rows of first adhesive tapes in the front-rear direction for fixing the heat radiating pipe to the side plate, and facing the first opening and the first opening that open at the front of the side of the partition plate In the refrigerator in which the foamed heat insulating material is filled into the partition plate through the second opening that opens in the inner box, a process is performed to increase the adhesive strength to the foamed heat insulating material from directly above the first adhesive tape. A processing unit is provided in front of the side plate, and the processing unit is Refrigerator, characterized in that provided in the region of the first adhesive tape that faces the side surface of the plate.   The refrigerator according to claim 3, wherein the processing unit is formed by a dividing part that divides the first adhesive tape or a notch part that cuts the first adhesive tape into a narrow width.   It has a reinforcing part that is bridged to the inner box adjacent to the front of the foam insulation material into which the partition plate is filled, and the processing part is arranged behind the reinforcing part. The refrigerator according to any one of claims 1 to 4.

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