CN114867978A

CN114867978A - Refrigerator with a door

Info

Publication number: CN114867978A
Application number: CN202180007366.XA
Authority: CN
Inventors: 千田勇介; 望月修; 渡边拓也
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Priority date: 2020-04-22
Filing date: 2021-04-20
Publication date: 2022-08-05
Anticipated expiration: 2041-04-20
Also published as: JP7490220B2; WO2021213348A1; JP2021173448A; CN114867978B

Abstract

The present invention provides a refrigerator that makes it possible to suppress deformation, displacement, and the like of an insulating partition wall in a process of foaming and filling a heat insulating material. The refrigerator 10 includes: a thermal insulation box 11 having an outer box 111 and an inner container 112 ; a storage compartment formed inside the thermal insulation box 11 ; and an insulating partition wall 28 dividing the storage compartment. In addition, the protrusion 22 is formed to protrude rearward on the rear surface of the heat insulating partition wall 28 , and the protrusion 22 is inserted into the insertion port 23 formed in the inner pot 112 until it reaches the vicinity of the outer case 111 .

Description

Refrigerator with a door

Technical Field

The present invention relates to a refrigerator that cools and preserves food and the like in a storage compartment, and more particularly, to a refrigerator having a heat-insulating partition wall that partitions the storage compartment.

Background

A general refrigerator has a plurality of storage compartments having different internal temperatures, and a heat insulating partition wall filled with a heat insulating material is disposed between the storage compartments.

With reference to fig. 8, a structure for partitioning each storage compartment described in patent document 1 as a background art will be described. Fig. 8 is an exploded perspective view of a refrigerator 1100 according to the related art. The refrigerator 1100 includes a heat insulating box 1101, and a storage compartment is formed inside the heat insulating box 1101.

The heat insulating case 1101 has: an outer case 1102; an inner container 1103 positioned inside the outer box 1102; and a heat insulating material 1104 foamed and filled between the outer case 1102 and the inner container 1103. The storage compartment formed inside the heat-insulating box 1101 has a refrigerating compartment 1105, a freezing compartment 1106, and a fresh food compartment 1107 from above downward.

The refrigerating chamber 1105 and the freezing chamber 1106 are partitioned by an insulating partition wall 1108 having an insulating structure. Further, the freezing chamber 1106 and the fresh food chamber 1107 are partitioned by an insulating partition wall 1109 having an insulating structure.

In the manufacturing process of the refrigerator 1100, after the inner container 1103 is disposed inside the outer case 1102, the heat insulating partition wall 1108 and the heat insulating partition wall 1109 prepared as separate components are assembled inside the inner container 1103. Further, a heat insulating material 1104 is foamed and filled between the outer case 1102 and the inner container 1103. Thereby, the refrigerating chamber 1105 and the freezing chamber 1106 are insulated and divided by an insulating partition wall 1108, and the freezing chamber 1106 and the fresh food chamber 1107 are insulated and divided by an insulating partition wall 1109.

[ patent document 1 ] Japanese patent laid-open No. 2018-179407.

However, in the aforementioned refrigerator 1100, there are the following problems: the thermal insulating partition wall 1108 and the thermal insulating partition wall 1109 may be deformed or moved during the manufacturing process.

Specifically, when the heat insulating material 1104 is foam-filled between the outer case 1102 and the inner container 1103, the heat insulating case 1101 is bonded to the foaming mold in order to suppress deformation of the heat insulating case 1101. Here, there are the following problems: when the thermal insulation cabinet 1101 is bonded to the foaming mold, the thermal insulation partition 1108 and the thermal insulation partition 1109 are deformed.

In addition, there are also the following problems: the strength of the connection between the thermal insulating partition wall 1108 and the thermal insulating partition wall 1109 and the thermal insulating case 1101 is not necessarily sufficient.

Disclosure of Invention

The present invention has been made in view of the foregoing circumstances, and an object of the present invention is to provide a refrigerator capable of suppressing deformation of a heat insulating partition wall in a process of foaming a heat insulating material.

The present invention provides a refrigerator, comprising: the refrigerator comprises a heat preservation box body with an outer box and an inner container, a storage chamber formed in the heat preservation box body, and a heat insulation partition wall used for partitioning the storage chamber; the heat insulating partition wall has a partition body and a projecting portion projecting rearward from the partition body, an insertion opening is formed in the inner container at a position corresponding to the projecting portion, and the projecting portion is provided so as to be inserted into the insertion opening until reaching the vicinity of the outer box. According to the refrigerator of the present invention, in the step of inserting the heat insulating partition wall into the mold to foam the heat insulating material inside the heat insulating box, the heat insulating partition wall can be suppressed from moving or deforming. Specifically, in the step of inserting the heat-insulating partition wall into the mold, the distal end of the protruding portion of the heat-insulating partition wall is positioned in the vicinity of the outer box, and therefore, when an external force acts, the partition main body of the heat-insulating partition wall is supported so that the protruding portion abuts against the outer box, and deformation or the like of the heat-insulating partition wall can be suppressed. In addition, the bonding strength between the heat insulating partition wall and the heat retention box can be improved.

In addition, the refrigerator of the present invention further includes a protection portion for protecting the protrusion portion, the protection portion being formed from a connection portion of the protrusion portion with the partition main body until reaching a middle portion of the protrusion portion. According to the refrigerator of the present invention, since the rigidity of the protruding portion can be ensured by protecting the protruding portion from the connecting portion to the middle portion thereof with the protecting portion, the protruding portion can be prevented from being broken during transportation or assembly of the heat insulating partition wall.

In addition, in the refrigerator of the present invention, the heat insulating partition wall is constituted by: a partitioning heat insulating material made of a heat insulating material, an upper cover portion covering the partitioning heat insulating material from above, and a lower cover portion covering the partitioning heat insulating material from below; the protection part is composed of the following structures: a protective upper part formed on a rear side surface of the upper cover part, and a protective lower part formed on a rear side surface of the lower cover part. According to the refrigerator of the present invention, the protection part is formed of the upper cover part and the lower cover part, and thus the protection part can be formed without an additional member.

In the refrigerator according to the present invention, the protection portion is terminated between the inner container and the outer container. According to the refrigerator of the present invention, since the protective portion made of synthetic resin having high thermal conductivity is terminated in front of the outer box, heat is not conducted to the outer box through the protective portion, and dew condensation can be prevented from occurring at a portion where the outer box abuts against the protruding portion.

The present invention provides a refrigerator, comprising: the refrigerator comprises a heat preservation box body with an outer box and an inner container, a storage chamber formed in the heat preservation box body, and a heat insulation partition wall used for partitioning the storage chamber; the heat-insulating partition wall has a partition body and a protruding portion protruding rearward from the partition body, an insertion opening is formed in the inner container at a position corresponding to the protruding portion, and the protruding portion is provided to be inserted into the insertion opening until abutting against the outer box. According to the refrigerator of the present invention, in the step of inserting the heat insulating partition wall into the mold to foam the heat insulating material inside the heat insulating box, the heat insulating partition wall can be suppressed from moving or deforming. Specifically, in the step of inserting the heat-insulating partition wall into the mold, the distal end of the protruding portion of the heat-insulating partition wall abuts against the outer box, and therefore, when an external force acts, the partition main body of the heat-insulating partition wall is supported so that the protruding portion abuts against the outer box, and deformation or the like of the heat-insulating partition wall can be suppressed. In addition, the bonding strength between the heat insulating partition wall and the heat retention box can be improved.

In addition, in the refrigerator of the present invention, a partitioning and heat insulating material is installed inside the partitioning main body, and the partitioning and heat insulating material has a partitioning and heat insulating main body and a heat insulating protrusion protruding rearward from a rear side surface of the partitioning and heat insulating main body; the protrusion has the heat insulating protrusion, and the end thereof is constituted by the heat insulating protrusion, which is in contact with the outer box. According to the refrigerator of the present invention, the terminal of the protruding portion is formed by the heat insulating protruding portion, and the outer case of the portion abutting against the protruding portion is prevented from being cooled extremely by heat conduction, whereby dew condensation on the outer surface of the outer case can be suppressed.

In addition, the ice of the present invention further includes a protection portion for protecting the heat insulation protrusion, the protection portion being formed from a base portion of the heat insulation protrusion to a middle portion of the heat insulation protrusion. According to the refrigerator of the present invention, the rigidity of the protruding portion can be ensured by protecting from the connecting portion to the middle portion of the protruding portion with the protecting portion, and therefore the breakage of the protruding portion in the transportation or assembly of the heat insulating partition wall can be prevented; further, since the protection portion is terminated in front of the outer box and does not contact the outer box, the heat is not conducted to the outer box through the protection portion, and condensation can be suppressed from occurring at the portion where the outer box contacts the protruding portion.

In the refrigerator according to the present invention, a stepped portion is formed in the middle of the heat insulating protrusion continuously around the heat insulating protrusion, and the rear end of the protector abuts against the stepped portion. With this configuration, even if a force pushing forward acts on the protruding portion, the stepped portion and the rear end of the protector portion contact each other to support the heat insulating protruding portion, and therefore deformation of the protruding portion can be suppressed.

In addition, in the refrigerator of the present invention, the heat insulating partition wall is constituted by the partition heat insulating material, an upper lid portion, and a lower lid portion; the upper cover part is provided with an upper cover main body and a protective upper part which protrudes backwards from the rear side surface of the upper cover main body, the upper cover main body covers the upper surface and the upper part of the side surface of the separation heat insulation main body of the separation heat insulation material, and the protective upper part covers the upper surface of the base part of the heat insulation protruding part and the upper part of the side surface of the base part; the lower cover part has a lower cover main body and a protective lower part projecting rearward on the rear side surface of the lower cover main body, the lower cover main body covers the lower surface and the side surface lower part of the partition heat insulation main body of the partition heat insulation material, and the protective lower part covers the lower surface of the base part and the side surface lower part of the base part of the heat insulation projecting part; the protection portion is constituted by the protection upper portion and the protection lower portion. According to the refrigerator of the present invention, the protection part is formed of the upper cover part and the lower cover part, and thus the protection part can be formed without an additional member.

In addition, in the refrigerator of the invention, a groove is formed on the inner surface of the inner container, and the insertion opening is formed in the groove; the heat insulating partition wall is fitted in the groove, and the projection is inserted into the insertion port. According to the refrigerator provided by the invention, the inner container and the heat insulation partition wall can be conveniently installed and positioned.

Drawings

Fig. 1 is a perspective view illustrating a refrigerator according to an embodiment of the present invention;

fig. 2 is a side sectional view showing a refrigerator of an embodiment of the present invention;

fig. 3 is an illustration showing a refrigerator of an embodiment of the present invention, which shows a perspective view of a heat-retaining box body and a heat-insulating partition wall separately;

fig. 4A is a perspective view illustrating an insulated partition wall of a refrigerator according to an embodiment of the present invention;

fig. 4B is a side sectional view showing an insulated partition wall of a refrigerator of an embodiment of the present invention;

fig. 4C is a schematic view illustrating an insulated partition wall of a refrigerator according to an embodiment of the present invention, in which an enlarged side sectional view of an insulated protrusion and a peripheral portion thereof is shown;

fig. 5 is an exploded perspective view showing an insulated partition wall of a refrigerator according to an embodiment of the present invention;

fig. 6A is a side sectional view illustrating a method of manufacturing a refrigerator according to an embodiment of the present invention, illustrating a process of foaming an insulation material;

FIG. 6B is a sectional view showing a section B-B in FIG. 6A;

FIG. 7A is a side sectional view showing a method of manufacturing a refrigerator of a comparative example, showing a process of foaming a heat insulating material;

FIG. 7B is a sectional view showing in section C-C in FIG. 7A;

fig. 8 is an exploded perspective view illustrating a structure of a related art refrigerator.

Description of the reference numerals:

10. a refrigerator; 11. a heat preservation box body; 111. an outer box; 112. an inner container; 113. a thermal insulation material; 115. a cooling chamber; 117. a defrosting heating unit; 118. an air supply duct; 12. a refrigerating chamber; 13. a freezing chamber; 14. a machine room; 16. a refrigeration cycle; 161. a compressor; 162. an evaporator; 17. a partition plate; 18. a heat-insulating door; 19. a heat-insulating door; 20. a heat-insulating door; 21. a heat-insulating door; 22. a protrusion; 23. an insertion opening; 24. a groove; 25. a partition body; 26. a separation and insulation material; 27. a blower; 28. a thermally insulating partition wall; 29. a thermally insulating projection; 30. protecting the upper part; 31. protecting the lower part; 32. a step portion; 33. an upper cover portion; 34. a lower cover portion; 35. a foaming mold; 36. a partition wall accommodating portion; 37. a protection part; 38. an upper cover main body; 39. a partitioning insulating body; 40. a lower cover main body; 1100. a refrigerator; 1101. a heat preservation box body; 1102. an outer box; 1103. an inner container; 1104. a thermal insulation material; 1105. a refrigerating chamber; 1106. a freezing chamber; 1107. a fresh-keeping chamber; 1108. a thermally insulating partition wall; 1109. a thermally insulating partition wall.

Detailed Description

Next, the refrigerator 10 according to the embodiment of the present invention will be described in detail based on the drawings. In the following description, in principle, the same members are denoted by the same reference numerals, and overlapping description is omitted. In addition, in the following description, the respective directions of up, down, front, rear, left, and right are used as appropriate, and the left and right indicate the left and right when the refrigerator 10 is viewed from the front. Further, in the present embodiment, the refrigerator 10 is exemplified as a refrigerator having a freezing chamber and a refrigerating chamber, but as the refrigerator 10, a refrigerator having only a freezing chamber or a refrigerator having only a refrigerating chamber may be employed.

Fig. 1 is a perspective view of a refrigerator 10 of an embodiment of the present invention as viewed from the front left. The refrigerator 10 has a heat-insulating box body 11 and a storage compartment formed inside the heat-insulating box body 11. As the storage compartment, there are a refrigerating compartment 12 and a freezing compartment 13 from the upper side. The front opening of the refrigerating chamber 12 is closed at its upper section by an insulation door 18 and at its lower section by an insulation door 19. The front opening of the freezing chamber 13 is closed at its upper section by an insulation door 20 and at its lower section by an insulation door 21. The insulated door 18 is a revolving door, and the

insulated doors

19, 20 and 21 are drawer type doors.

Fig. 2 is a side sectional view integrally showing the refrigerator 10. The heat preservation box body 11 is composed of the following parts: an outer case 111 made of a steel plate bent into a predetermined shape; an inner container 112 made of a synthetic resin plate, which is disposed inside the outer case 111; and a heat insulating material 113 filled between the outer case 111 and the inner container 112. Further, the refrigerating chamber 12 and the freezing chamber 13 are insulated and divided by an insulated partition wall 28. The structure and the like of the thermal insulating partition wall 28 will be described later with reference to fig. 4 and the like.

A cooling chamber 115 is formed behind the freezing chamber 13, and the freezing chamber 13 and the cooling chamber 115 are partitioned by a partition 17. An evaporator 162 as a cooler is disposed inside the cooling chamber 115. Further, a machine chamber 14 is divisionally formed at a lower end side, a rear side, of the refrigerator 10, and a compressor 161 is disposed in the machine chamber 14. The evaporator 162 and the compressor 161 form a refrigerant compression refrigeration cycle 16. Specifically, the refrigeration cycle 16 includes a compressor 161, a condenser, not shown, an expansion device, not shown, and an evaporator 162. By operating the refrigeration cycle 16, the temperature of the cold air inside the cooling compartment 115 is lowered by the evaporator 162, and the cold air is blown to each of the storage compartments by the blower 27, so that the temperature inside each of the storage compartments becomes a predetermined cooling temperature range. The respective constituent devices constituting the refrigeration cycle 16 are connected to each other by refrigerant pipes, and the refrigerant pipe 23 is made of a metal pipe such as a copper pipe.

Inside the cooling chamber 115, a blower 27 is arranged above the evaporator 162. The blower 27 is an axial flow blower or a centrifugal blower, and blows cold air inside the cooling chamber 115 cooled by the evaporator 162 to the refrigerating chamber 12 and the freezing chamber 13.

Inside the cooling chamber 115, a defrosting heating unit 117 is disposed below the evaporator 162. The defrosting heating unit 117 is a heater that generates heat when energized.

A blast duct 118 is formed upward from the cooling chamber 115. The air duct 118 is formed with an opening for blowing out cold air to the refrigerator compartment 12. The cold air having cooled the refrigerating chamber 12 is returned to the cooling chamber 115 through a return duct (not shown here), thereby cooling the refrigerating chamber 12 to a preset refrigerating temperature range.

A part of the blown cold air is blown to the freezing chamber 13 through an opening formed at an upper portion of the partition 17, and the cold air cooling the freezing chamber 13 is returned to the cooling chamber 115 from an opening formed at a lower portion of the partition 17. Thereby cooling the freezing chamber 13 to a preset freezing temperature range.

As the refrigerating chamber 12 and the freezing chamber 13 are continuously cooled by the refrigerating cycle 16, much frost is generated at the evaporator 162 and blocks heat transfer and air flow of the evaporator 162, and thus, a defrosting operation of the evaporator 162 is periodically performed. In the defrosting operation, cooling of the refrigerating chamber 12 and the freezing chamber 13 by the refrigerating cycle 16 is stopped, blowing by the blower 27 is stopped, and the air inside the cooling chamber 115 is heated by the defrosting heating unit 117 to defrost the evaporator 162. After the defrosting operation is finished, the cooling operation of the refrigerating chamber 12 and the freezing chamber 13 described above is resumed.

Fig. 3 is a perspective view of the insulated box 11 showing the insulated box 11 and the thermally insulated partition wall 28 in a separated state.

As described above, the storage compartment formed inside the insulated box 11 is divided into the refrigerating compartment 12 and the freezing compartment 13 by the heat-insulating partition wall 28. The heat-insulating partition wall 28 is assembled with the insulated box body 11 so as to be fitted in the groove 24 formed on the inner surface of the inner container 112. The groove 24 is a concave region in which the left inner surface, the rear inner surface, and the right inner surface of the inner container 112 are recessed outward. Further, the rear surface of the inner container 112 is partially opened with a rectangular opening, thereby forming the insertion port 23. In the present embodiment, two insertion ports 23 are formed in the groove 24.

The projecting portion 22 is formed to project rearward from the rear surface of the heat insulating partition wall 28. In the present embodiment, two projections 22 are formed on the rear side surface of the thermal insulation partition wall 28. When the heat insulating partition wall 28 is assembled to the heat insulating box 11, the protrusion 22 is inserted into the insertion port 23 of the inner container 112. In this way, as described later with reference to fig. 6B, it is possible to prevent the thermal partition wall 28 from being deformed in the foaming process when the refrigerator 10 is manufactured. In addition, the heat insulating partition wall 28 can be more firmly assembled to the heat retention box 11.

Fig. 4A is a perspective view showing the thermally insulating partition wall 28, fig. 4B is a sectional view of a section a-a of fig. 4A, and fig. 4C is a partially enlarged sectional view showing the thermally insulating protrusion 29 and its peripheral portion in an enlarged manner.

Referring to fig. 4A, the thermal insulation partition wall 28 has a partition body 25 and a projection 22. The partition main body 25 has a flat rectangular parallelepiped shape conforming to the internal shape of the outer box 111, and the protruding portion 22 protrudes rearward from the rear side surface of the partition main body 25.

Referring to fig. 4B, the partitioning main body 25 contains a partitioning insulating material 26 therein. The partition insulating material 26 is made of a foamed resin such as a urethane resin. The projection 22 has a heat insulating projection 29, and a part of the partition insulating material 26 projects rearward in the heat insulating projection 29. The tip of the projection 22 is constituted by an insulating projection 29. In addition, the base of the protruding portion 22 is covered with a protective portion 37 made of a synthetic resin plate. Since the heat insulating protrusion 29 can be reinforced by protecting the base portion of the heat insulating protrusion 29 with the protecting portion 37, the protrusion 22 can be prevented from being damaged in a transportation process, an assembly process, or the like of the heat insulating partition wall 28.

In FIG. 4C, the insulating protrusion 29 and its peripheral portion are shown together, the inner container 112 is shown by a dotted line, and the outer container 111 is shown by a dotted and horizontal line. The protruding portion 22 is inserted into a space between the outer box 111 and the inner container 112 from an insertion port 23 formed in the inner container 112. The distal end portion of the projection 22 constituted by the heat insulating projection 29 is disposed in the vicinity of the outer box 111. Since the heat insulating protrusion 29 made of foamed resin is disposed in the vicinity of the outer box 111 made of steel plate, heat exchange via the protrusion 22 is suppressed, and dew condensation can be suppressed from occurring on the outer surface of the outer box 111 at the portion in contact with the heat insulating protrusion 29.

In the present embodiment, the heat insulating protrusion 29 is disposed near the outer box 111, but the present invention is not limited thereto, and the heat insulating protrusion 29 may be in contact with the outer box 111.

In the middle of the heat insulating protrusion 29, a step 32 is formed continuously around the heat insulating protrusion 29. The rear end of the guard 37 abuts the step 32. With this structure, even if a force pushing forward (as indicated by an arrow) acts on the protruding portion 22, the rear ends of the step portion 32 and the protecting portion 37 contact each other to support the heat insulating protruding portion 29, and therefore deformation of the protruding portion 22 can be suppressed.

The protective portion 37 does not reach the outer box 111, but ends between the inner container 112 and the outer box 111, for example, at a substantially central portion thereof. Since the protective portion 37 made of a synthetic resin plate having a relatively high thermal conductivity is terminated in front of the outer case 111, heat conduction through the protective portion 37 can be suppressed, and therefore, the outer case 111 of the portion in contact with the protruding portion 22 is not cooled extremely by heat conduction with the protective portion 37, and thus, dew condensation can be suppressed from occurring on the outer surface of the outer case 111.

Fig. 5 is an exploded perspective view showing the heat insulating partition wall 28 of the refrigerator 10.

The heat insulating partition wall 28 has an upper lid portion 33, a partition heat insulating material 26, and a lower lid portion 34 from the upper side.

The partition insulating material 26 is formed by molding a foamed resin into a predetermined shape, and has a partition insulating body 39 having a substantially flat rectangular parallelepiped shape, and an insulating protrusion 29 protruding rearward on a rear side surface of the partition insulating body 39.

The upper cover 33 is made of a synthetic resin plate molded into a predetermined shape, and has an upper cover main body 38 and a protective upper portion 30 projecting rearward from a rear side surface of the upper cover main body 38. The upper cover body 38 covers the upper surface and the upper side surface of the partitioning and insulating body 39 of the partitioning and insulating material 26. Further, the protective upper part 30 covers the upper surface of the base of the heat insulating protrusion 29 and the upper part of the side surface of the base.

The lower cover portion 34 is made of a synthetic resin plate molded into a predetermined shape, and has a lower cover main body 40 and a protective lower portion 31 projecting rearward on a rear side surface of the lower cover main body 40. The lower cover portion 34 covers the lower surface and the lower side surface of the partitioning and insulating body 39 of the partitioning and insulating material 26. Further, the protective lower portion 31 covers the lower surface of the base portion of the heat insulating protrusion 29 and the lower portion of the side surface of the base portion.

Fig. 6A and 6B are diagrams illustrating a manufacturing method of the refrigerator 10, illustrating a process of foaming the heat insulating material 113, fig. 6A is a side sectional view, and fig. 6B is a sectional view in a B-B section of fig. 6A. In the following description of the manufacturing method, reference is also made to fig. 1 to 5 as appropriate.

In the method of manufacturing the refrigerator 10 according to the present embodiment, first, referring to fig. 3, the outer case 111 and the inner container 112 are assembled to form the heat insulating box 11. Further, the heat insulating partition wall 28 is assembled to the heat insulating box 11. At this time, the protruding portion 22 of the heat insulating partition wall 28 is inserted into the insertion port 23 formed on the rear-side inner surface of the insulated box 11.

Next, as shown in fig. 6A, the heat insulating box 11 is fitted to the foaming mold 35 so that the inside of the heat insulating box 11, that is, the space between the outer box 111 and the inner container 112 is filled with the foaming resin. The reason why the insulated cabinet 11 is fitted to the foaming mold 35 is to prevent the inner container 112 from being deformed by the foaming pressure. Then, the foaming mold 35 has a shape conforming to the inner shape of the inner bladder 112, and the foaming mold 35 is additionally formed with a partition wall accommodating portion 36 conforming to the shape of the heat insulating partition wall 28.

The heat-insulating partition wall 28 is accommodated in the partition wall accommodating portion 36 when the insulated cabinet 11 is fitted to the foaming mold 35. At this time, a force pressing the heat insulating partition wall 28 upward acts. Here, in order to suppress deformation at the time of foaming, the gap between the heat insulating partition wall 28 and the partition wall accommodating portion 36 is very small. Then, since the side surface of the partition wall accommodating portion 36 is in contact with the side surface of the thermal-insulating partition wall 28, resistance when the thermal-insulating partition wall 28 is inserted into the partition wall accommodating portion 36 becomes large.

Referring to fig. 6B, in the present embodiment, the protruding portion 22 of the heat insulating partition wall 28 is inserted from the insertion opening 23 formed in the inner container 112 until reaching the outer container 111. Then, a reaction force is obtained due to the contact of the rear end portion of the protruding portion 22 with the outer case 111.

Specifically, as described above with reference to fig. 3C, the protruding portion 22 protruding rearward from the partition main body 25 of the heat insulating partition wall 28 is inserted from the insertion port 23 of the inner container 112 into the space formed between the inner container 112 and the outer container 111. Further, the rear end of the protruding portion 22 is arranged near the outer box 111. When the heat insulating partition wall 28 is pressed against the outer box 111 in this step, the rear end of the protruding portion 22 abuts against the front surface of the outer box 111, and a reaction force that suppresses displacement and deformation of the heat insulating partition wall 28 can be obtained. In addition, since the protruding portion 22 is reinforced by bringing the rear end of the protecting portion 37 into abutment with the step portion 32 of the heat insulating protruding portion 29, a larger reaction force is generated, and displacement and deformation of the heat insulating partition wall 28 can be more effectively suppressed.

Thus, when the insulated box body 11 is assembled to the foaming mold 35, the insulated partition wall 28 is not displaced inside the insulated box body 11, and the insulated partition wall 28 can be prevented from being deformed.

After the heat insulating box 11 is assembled to the foaming mold 35, a foaming resin such as a urethane resin is filled in the heat insulating box 11. After the foaming process is completed, the heat-insulating case 11 is removed from the foaming mold 35. In addition, as shown in fig. 2, the refrigerator 10 is manufactured by attaching other constituent devices such as the heat insulation door 18 and the refrigeration cycle 16 to the heat preservation case 11.

Fig. 7A and 7B are diagrams illustrating a method of manufacturing the refrigerator 10 of the comparative example, illustrating a process of foaming the heat insulating material 113, fig. 7A is a side sectional view, and fig. 7B is a sectional view in a section C-C of fig. 7A. In the comparative example shown in the figure, the protrusion 22 shown in fig. 6A and the like is not formed on the heat insulating partition wall 28.

As shown in fig. 7A, when the insulated box body 11 is bonded to the foaming mold 35 without the protruding portion 22, a force pressing the insulated partition wall 28 upward is generated when the insulated partition wall 28 is inserted into the partition wall accommodating portion 36.

As a result, referring to fig. 7B, the front surface of the thermal insulation partition wall 28 is curved upward. In this case, when the heat insulation door 19 shown in fig. 2 is attached to the front surface of the heat insulation box 11, a gap is formed between the front surface of the heat insulation partition wall 28 and the heat insulation door 19. As a result, the refrigerating compartment 12 cannot be closed by the insulating door 19, and there is a problem that the cooling efficiency of the refrigerating compartment 12 is lowered.

According to the present embodiment, the following main effects can be obtained.

Referring to fig. 3, since the protrusion 22 is inserted into the insertion port 23, the joining strength between the heat insulating partition wall 28 and the heat retention box 11 can be increased. In addition, as shown in fig. 6, in the step of inserting the heat insulating partition wall 28 into the mold to foam the heat insulating material 113 inside the heat insulating box body 11, the partition main body 25 is supported by the protrusion 22, and therefore, the movement or deformation of the heat insulating partition wall 28 can be suppressed.

As shown in fig. 4B, by protecting the connection portion of the protruding portion 22 with the protecting portion 37, the rigidity of the protruding portion 22 can be ensured, and the supporting force of the protruding portion 22 can be increased.

As shown in fig. 5, by forming the protecting portion 37 by the protecting upper portion 30 and the protecting lower portion 31, the protecting portion 37 can be formed without requiring an additional member.

As shown in fig. 4C, the protective portion 37 made of synthetic resin having high thermal conductivity is terminated in front of the outer box 111, so that heat is not conducted through the protective portion 37, and dew condensation can be suppressed from occurring at the outer box 111 in the portion abutting against the protruding portion 22.

As shown in fig. 6A, when the heat insulating box 11 is coupled to the foaming mold 35 in the foaming step, the projection 22 of the heat insulating partition wall 28 abuts on the inside of the heat insulating box 11, and thus the heat insulating partition wall 28 can be prevented from moving or deforming in the step of inserting the heat insulating partition wall 28 into the mold 35.

Referring to fig. 4B, since the protruding portion 22 is made of the heat insulating protruding portion 29 which is a foamed resin, even when the distal end of the protruding portion 22 abuts against the outer box 111, since heat exchange via the protruding portion 22 is small, it is possible to suppress occurrence of dew condensation on the outer box 111 in the portion abutting against the protruding portion 22.

The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the scope of the gist of the present invention. Further, the foregoing various forms may be combined with each other.

For example, referring to fig. 2, in the refrigerator 10 of the present embodiment, the heat insulating partition wall 28 partitions the storage compartment in the vertical direction, but the heat insulating partition wall 28 may partition the storage compartment in the horizontal direction.

Claims

A refrigerator, comprising: the refrigerator comprises a heat preservation box body with an outer box and an inner container, a storage chamber formed in the heat preservation box body, and a heat insulation partition wall used for partitioning the storage chamber; the heat insulating partition wall has a partition body and a projecting portion projecting rearward from the partition body, an insertion opening is formed in the inner container at a position corresponding to the projecting portion, and the projecting portion is provided so as to be inserted into the insertion opening until reaching the vicinity of the outer box.
The refrigerator of claim 1, further comprising a protecting portion for protecting the protruding portion, the protecting portion being formed from a connection portion of the protruding portion with the partition main body until reaching a middle portion of the protruding portion.
The refrigerator according to claim 2, wherein the heat-insulating partition wall is constituted by each of: a partitioning heat insulating material made of a heat insulating material, an upper cover portion covering the partitioning heat insulating material from above, and a lower cover portion covering the partitioning heat insulating material from below;

the protection part is composed of the following structures: a protective upper part formed on a rear side surface of the upper cover part, and a protective lower part formed on a rear side surface of the lower cover part.
The refrigerator of claim 2, wherein the protective portion terminates between the inner container and the outer container.
A refrigerator, comprising: the refrigerator comprises a heat preservation box body with an outer box and an inner container, a storage chamber formed in the heat preservation box body, and a heat insulation partition wall used for partitioning the storage chamber; the heat insulating partition wall has a partition body and a projecting portion projecting rearward from the partition body, an insertion opening is formed in the inner container at a position corresponding to the projecting portion, and the projecting portion is provided so as to be inserted into the insertion opening until the projecting portion abuts against the outer box.
The refrigerator according to claim 5, wherein the partitioning insulating material is installed inside the partitioning main body, and the partitioning insulating material has a partitioning insulating main body and an insulating protrusion protruding rearward from a rear side surface of the partitioning insulating main body; the protruding portion has the heat insulating protruding portion, and the end thereof is constituted by the heat insulating protruding portion, the heat insulating protruding portion being in contact with the outer box.
The refrigerator according to claim 6, further comprising a protecting portion for protecting the heat insulating protrusion, the protecting portion being formed from a base of the heat insulating protrusion until reaching a middle portion of the heat insulating protrusion.
The refrigerator according to claim 7, wherein a stepped portion is formed in a middle portion of the heat insulating protrusion continuously around the heat insulating protrusion, and a rear end portion of the protecting portion abuts against the stepped portion.
The refrigerator according to claim 7, wherein the heat insulating partition wall is constituted by the partition heat insulating material, an upper lid portion and a lower lid portion;

the upper cover part is provided with an upper cover main body and a protective upper part which protrudes backwards from the rear side surface of the upper cover main body, the upper cover main body covers the upper surface and the upper part of the side surface of the separation heat insulation main body of the separation heat insulation material, and the protective upper part covers the upper surface of the base part of the heat insulation protruding part and the upper part of the side surface of the base part;

the lower cover part has a lower cover main body and a protective lower part projecting rearward on the rear side surface of the lower cover main body, the lower cover main body covers the lower surface and the side surface lower part of the partition heat insulation main body of the partition heat insulation material, and the protective lower part covers the lower surface of the base part and the side surface lower part of the base part of the heat insulation projecting part;

the protection portion is constituted by the protection upper portion and the protection lower portion.
The refrigerator of claim 5, wherein a groove is formed on an inner surface of the inner container, the insertion opening being formed in the groove; the heat insulating partition wall is fitted in the groove, and the projection is inserted into the insertion port.