JP6788726B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator having a heat radiating pipe at the frontage portion of the front surface.

The refrigerator is provided with a structure for heating the frontage portion in order to prevent dew condensation from occurring in the vicinity of the frontage portion of the storage chamber due to the influence of the cooled internal temperature. As such a heating structure, for example, a part of the heat radiating pipe provided on the heat radiating side of the refrigerating cycle provided in the refrigerator is divided into a frontage portion (periphery of the opening of the refrigerator and a partition for partitioning the storage chamber) on the front surface of the refrigerator. A structure is adopted in the front portion of the wall) (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2003-194450

By the way, in recent refrigerators, the use of vacuum heat insulating materials having higher heat insulating performance is being promoted in order to further improve the energy saving performance. In addition, considering the impact on the environment, it is basic to operate the refrigeration cycle with a necessary and sufficient low load. As a result, the temperature of the refrigerant flowing through the heat radiating pipe tends to decrease.

When the temperature of the heat radiating pipe is lowered in this way, it becomes difficult to suppress dew condensation by the heat radiating pipe performed at the frontage portion of the refrigerator.

Therefore, an object of the present invention is to provide a structure of a heat radiating pipe capable of more effectively suppressing dew condensation at the frontage portion in the refrigerator.

The refrigerator according to one aspect of the present invention is arranged on the front side plate-shaped member constituting the front surface of the frontage portion of the refrigerator and the back side of the front side plate-shaped member, and the refrigerant warmed by the refrigeration cycle in the refrigerator is inside. A heat-dissipating pipe to pass through, a support member for supporting the heat-dissipating pipe, and a support member arranged behind the heat-dissipating pipe, and when the support member is fixed to the front-side plate-shaped member, the heat-dissipating pipe is attached to the back surface of the front-side plate-shaped member. It is provided with a spacer portion that is moved along the above and pressed against the back side of the front plate-shaped member.

In the refrigerator of the present invention, the spacer portion may be arranged on the rear side of the heat radiating pipe so as to come into contact with the outer peripheral surface of the heat radiating pipe which is inclined with respect to the back surface of the front plate-shaped member. Good.

In the refrigerator of the present invention, the spacer portion may be elastically deformed in a direction orthogonal to the outer peripheral surface of the heat radiating pipe while the support member is fixed to the front plate-shaped member.

In the refrigerator of the present invention, the support member has an inclined surface that is inclined with respect to the back surface of the front plate-shaped member, and the inclined surface of the support member is a portion located behind the heat radiation pipe. Even if the distance from the spacer portion is smaller than the diameter of the heat radiation pipe and the distance from the spacer portion in the portion located in front of the heat radiation pipe is larger than the diameter of the heat radiation pipe. Good.

In the refrigerator of the present invention, the support member may have a surface that contacts the back surface of the front plate-shaped member.

According to the present invention, a spacer portion for pushing the heat radiating pipe toward the front plate-shaped member is provided at the frontage portion of the refrigerator. Then, when the support member is fixed to the front plate-shaped member, the spacer portion pushes the heat radiating pipe against the back surface of the front plate-shaped member while moving the heat radiating pipe along the back surface of the front plate-shaped member. As a result, the heat radiating pipe can be arranged so as to be closer to the frontage portion more reliably. Therefore, the effect of suppressing dew condensation at the frontage of the refrigerator can be enhanced.

It is a perspective view which shows the structure of the frontage part of the refrigerator which concerns on one Embodiment of this invention. It is a schematic diagram which shows the structure of the refrigerating cycle and the heat dissipation pipe provided in the refrigerator which concerns on one Embodiment of this invention. It is a vertical sectional view which shows the internal structure of the refrigerator which concerns on one Embodiment of this invention. It is a schematic diagram which shows the structure of the inner box which constitutes the lower part of the refrigerator which concerns on one Embodiment of this invention, and the heat dissipation pipe arranged in the frontage part. It is sectional drawing which shows the cross-sectional structure of the frontage part of the partition part of the refrigerator which concerns on one Embodiment of this invention. It should be noted that this figure is a cross-sectional view of the YY line of FIG. FIG. 5 is an enlarged cross-sectional view showing a lower portion of a partition portion of the refrigerator shown in FIG. It is a figure explaining the process of attaching a heat dissipation pipe to the partition part of the refrigerator shown in FIG. It is sectional drawing which shows the structure of the frontage part of the bottom part of the refrigerator which concerns on one Embodiment of this invention. It should be noted that this figure is a cross-sectional view of line XX of FIG. It is sectional drawing which shows the structure of the frontage part of the heat insulating box body which constitutes the bottom part of the refrigerator which concerns on one Embodiment of this invention. It is a schematic diagram explaining the assembly process of the heat insulating box body constituting the refrigerator which concerns on one Embodiment of this invention. (A) to (c) are schematic diagrams showing a step of fitting a base plate into an inner box of a heat insulating box body of a refrigerator according to an embodiment of the present invention. It is sectional drawing which shows the cross-sectional structure of the frontage part of the partition part of the refrigerator which concerns on 2nd Embodiment of this invention. It is a schematic diagram which shows the structure of the refrigerator which concerns on 3rd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are the same. Therefore, the detailed description of them will not be repeated.

<First Embodiment>
In the first embodiment, as an example of the refrigerator of the present invention, a refrigerator having a refrigerating chamber arranged on the upper side and a freezing chamber arranged on the lower side will be described as an example. However, the arrangement of each storage space of the refrigerator of the present invention is not limited to this.

<Overall configuration of refrigerator>
The left side of FIG. 2 shows a schematic configuration of the refrigerator 1 according to the present embodiment. Further, FIG. 3 shows the internal configuration of the refrigerator 1. As shown in FIG. 2, in the refrigerator 1, the refrigerating chamber 11 is arranged at the uppermost stage, and the first freezing chamber 12 is arranged at the lowermost stage. Further, in the middle stage of the refrigerator 1, the ice making chamber 13 is arranged on the left side, and the second freezing chamber 14 is arranged on the right side.

In the present embodiment, the surface provided with the door is the front surface of the refrigerator. Then, with reference to the front surface, each surface of the refrigerator 1 is designated as an upper surface 1a, a side surface 1b, a back surface 1c, and a bottom surface 1d (see FIGS. 2 and 3). Therefore, when the term "front side" or "back side" is defined in the present specification, the front side or the back side is provided with reference to an arbitrary position, or the front side or the back side is directed from an arbitrary position. It means the direction.

Further, as shown in FIG. 3, on the front surface (left side in FIG. 3) of each storage space of the refrigerator 1, openable / closable doors (for example, a refrigerating room door 11a, a first freezing room door 12a, and an ice making room door 13a). ) Are provided respectively. For the upper refrigerator compartment door 11a, for example, a method of opening and closing from either the left or right end, a method of opening and closing from both the left and right sides, a method of opening the double doors divided into left and right, and the like can be adopted. Further, as the first freezer door 12a, the ice making room door 13a, and the second freezer door (not shown) in the middle and lower stages, for example, a drawer type door can be adopted.

A refrigeration cycle is provided inside the refrigerator 1. The refrigerating cycle provided in the refrigerator 1 will be described with reference to FIGS. 2 and 3. The right side of FIG. 2 shows the configuration of the refrigerating cycle 20 provided inside the refrigerator. Further, the figure shows the arrangement of the heat dissipation pipe 25 connected to the refrigeration cycle 20. Further, FIG. 3 shows a cooling chamber 35 provided on the back surface 1c side of the refrigerator 1 and a machine room 30 provided on the back surface side of the bottom surface 1d of the refrigerator 1.

As shown in FIG. 2, the refrigeration cycle 20 includes a cooler (evaporator) 21, a compressor 22, a condenser 23, and an expander 24 as main components. Each of these components is connected via a refrigerant pipe (refrigerant flow path) through which the refrigerant flows. Of the refrigerant pipes, the flow path from the condenser 23 to the expander 24 constitutes the heat dissipation pipe 25. The inflator 24 is composed of a capillary tube (capillary) (not shown), a dryer and a refrigerant valve provided on the upstream side of the capillary tube in the flow direction of the refrigerant.

Further, a control unit (not shown) is provided inside the refrigerator 1. This control unit controls the operation of the refrigeration cycle 20. That is, when the control unit drives the compressor 22, the operation of the refrigeration cycle 20 is started, and the refrigerant is routed in the order of the compressor 22 → the condenser 23 → the heat dissipation pipe 25 → the expander 24 → the cooler 21 → the compressor 22. Circulates.

Specifically, the high-temperature and high-pressure refrigerant compressed by the compressor 22 is condensed while dissipating heat in the condenser 23. The refrigerant leaving the condenser 23 then flows through the heat radiating pipe 25. The heat of the refrigerant is taken away while flowing through the heat radiating pipe 25, and the refrigerant is condensed. The refrigerant that has passed through the heat radiating pipe 25 passes through the expander 24 to a low temperature and low pressure, and is sent to the cooler 21 as an evaporator. The refrigerant flowing into the cooler 21 exchanges heat with the airflow flowing in the cooling chamber 35, evaporates while absorbing heat, becomes a low-temperature gas refrigerant, and is sent to the compressor 22. In this way, the refrigeration cycle 20 is operated to circulate the refrigerant, and cold air is generated by the air flow that exchanges heat with the cooler 21.

The refrigerating capacity of the refrigerating cycle 20 is determined by, for example, the control unit switching to capillaries having different throttle degrees by a refrigerant valve, the control unit adjusting the rotation speed of the compressor 22, or a combination thereof. Be controlled.

As shown in FIG. 3, the cooler 21 is arranged in a cooling chamber 35 provided on the back side of the refrigerator 1. The cooling chamber 35 is located behind each storage space. In addition to the cooler 21, a cooling fan 33 and the like are provided in the cooling chamber 35. The cooling fan 33 is provided to circulate air between the cooling chamber 35 and each storage space. That is, the cooling fan 33 sends the cold air generated by the cooler 21 to each storage space via each flow path during the operation of the refrigeration cycle, and cools the cold air supplied to each storage chamber. Return to room 35. Further, as shown in FIG. 3, the compressor 22 is arranged in the machine room 30 provided on the back side of the bottom of the refrigerator 1.

<Structure of heat insulating box>
The refrigerator 1 is provided with a heat insulating box 50 as a heat insulating structure for insulating each storage space from the surroundings (see FIG. 3). The heat insulating box body 50 is provided so as to cover the outer periphery of the refrigerator 1. As shown in FIG. 3, the heat insulating box body 50 mainly includes an outer box 40, an inner box 60, and a heat insulating layer 51. In FIG. 3, the internal configuration of the refrigerator provided inside the heat insulating box 50 is not shown. Further, FIG. 10 schematically shows a process of assembling the outer box 40.

The outer box 40 forms the outer peripheral surface of the heat insulating box body 50. The outer box 40 also partially forms the outer shape of the refrigerator 1. The inner box 60 forms the inner peripheral surface of the heat insulating box body 50. Further, the inner box 60 forms an inner wall of each storage space (for example, a refrigerating room 11, a first freezing room 12, and an ice making room 13).

Further, a bottom plate 41 is provided at the bottom of the heat insulating box body 50. The bottom plate 41 mainly forms the bottom surface 1d of the refrigerator 1. A base plate 70 (see FIGS. 8, 10, etc.) is provided in front of the bottom plate 41. That is, the bottom of the frontage portion 10 of the heat insulating box body 50 is formed by an inner box 60, a bottom plate 41, and a base plate (base member) 70.

Further, a space for arranging the machine room 30 is formed on the back side of the bottom of the heat insulating box 50. That is, the machine room 30 is arranged outside the heat insulating box 50. This is because the temperature inside the machine room 30 rises as the compressor 22 is operated.

With the above configuration, as shown in FIG. 3, the machine room 30 and the first freezing room 12 are separated by the heat insulating box 50. Therefore, it is possible to prevent the heat generated in the machine room 30 from flowing into the first freezing room 12.

The heat insulating layer 51 is provided in the space between the outer box 40 and the inner box 60. The heat insulating layer 51 is composed of, for example, a vacuum heat insulating material and a foam heat insulating material. The vacuum heat insulating material is a sheet-shaped or plate-shaped heat insulating material. The foamed heat insulating material can be formed of, for example, foamed polyurethane.

The heat insulating box body 50 is manufactured, for example, as follows. First, the vacuum heat insulating material is adhered and fixed to the outer box 40 or the inner box 60 in advance. Then, the outer box 40 and the inner box 60 are fixed. Then, with the back surface 1c of the heat insulating box 50 facing up, the raw material of the liquid foam heat insulating material is injected from the injection port formed on the back surface. The injected raw material of the foamed heat insulating material is foamed in the space between the outer box 40 and the inner box 60 and then cured. As a result, the inside of the heat insulating box 50 is filled with the heat insulating layer 51. As shown in FIG. 3, the refrigerator 1 also includes a heat insulating layer 51 inside a partition wall 56 that partitions each storage space.

<About the arrangement of heat dissipation pipes>
Subsequently, the arrangement of the heat radiating pipe 25 will be described with reference to FIGS. 2 and 4. FIG. 4 shows a heat dissipation pipe 25 arranged at the frontage portion 10 (see FIG. 2) of the refrigerator 1.

The heat radiating pipe 25 is generally made of a metal material having relatively high thermal conductivity such as copper, aluminum, and iron. As described above, a relatively high temperature refrigerant flows from the condenser 23 into the heat radiating pipe 25. Then, as shown in FIG. 2, the heat radiating pipe 25 is stretched around the outer periphery of the refrigerator 1. Since the heat radiating pipe 25 through which the relatively high temperature refrigerant flows is arranged on the outer periphery of the refrigerator 1, it is generated due to the temperature difference between the inside and the outside of the refrigerator 1 on the outer peripheral surface of the refrigerator 1. The resulting dew condensation can be suppressed.

As shown in FIG. 2, the heat dissipation pipe 25 is roughly classified into a frontage heat dissipation pipe 25a, a right side heat dissipation pipe 25b, a left side heat dissipation pipe 25c, and a rear heat dissipation pipe 25d. The frontage heat dissipation pipe 25a is arranged at the frontage 10 between the refrigerator body and the door. The right side heat radiating pipe 25b and the left side heat radiating pipe 25c are arranged on the left and right side surfaces 1b of the refrigerator 1. The back heat dissipation pipe 25d is arranged on the back 1c of the refrigerator 1.

The flow path of the refrigerant in the heat radiating pipe 25 is not particularly limited, but for example, the refrigerant flows from the frontage radiating pipe 25a in the order of the right side radiating pipe 25b, the rear radiating pipe 25d, and the left side radiating pipe 25c. May be good. Since the frontage portion 10 of the refrigerator 1 is a boundary portion between the inside of the refrigerator and the outside air, dew condensation is more likely to occur. Therefore, the effect of suppressing dew condensation on the frontage portion 10 can be further enhanced by first flowing the higher temperature refrigerant from the condenser 23 to the frontage portion heat dissipation pipe 25a.

As shown in FIG. 4, in the refrigerator 1 of the present embodiment, the heat radiating pipe 25 (25a) is provided only in the frontage portion 10 of the middle to lower tiers where the freezer compartment and the ice making chamber are arranged. This is because dew condensation is likely to occur at the frontage of the freezing chamber where the temperature is lower. However, the present invention is not limited to such a configuration, and the heat radiating pipe 25 may be laid over the entire frontage portion of the refrigerator including the refrigerating chamber portion.

As shown in FIG. 2, in the frontage portion 10 of the refrigerator 1, the heat radiating pipe 25 is stretched over the entire peripheral edge of the first freezing chamber 12, the ice making chamber 13, and the second freezing chamber 14 of the refrigerator 1. .. The heat radiating pipe 25 is arranged along the frontage of the inner box 60 constituting the heat insulating box body 50.

<About the structure of the partition of the refrigerator frontage>
Subsequently, the arrangement configuration of the heat radiating pipe 25 on the partition wall 56 (partition portion) of the frontage portion 10 of the refrigerator 1 will be described with reference to FIGS. 1, 5, and 6. FIG. 1 shows a heat radiating pipe 25 provided in the frontage portion 10 of the middle portion of the refrigerator. FIG. 5 is a cross-sectional view of the refrigerator 1 shown in FIG. 1 along the YY line. FIG. 6 is an enlarged view of a cross section of a lower portion of the partition wall 56 shown in FIG. 5 in which the heat radiating pipe 25 is provided.

The partition wall 56 is provided at the boundary between the upper refrigerating chamber 11 and the middle ice making chamber 13 and the second freezing chamber 14. Here, the partition wall between the upper portion and the middle portion of the refrigerator 1 will be described as an example, but the same configuration will be applied to the frontage portion of the partition wall provided between the other storage spaces. Can be applied.

As shown in FIG. 1, a frame plate 81 (support member) and a center plate 82 (front plate-like member) are provided on the frontage portion 10 side of the partition wall 56. A heat radiating pipe 25 is arranged between the frame plate 81 and the center plate 82.

The frame plate 81 is an elongated plate-like member arranged on the front surface side of the partition wall 56 of the refrigerator 1 from one side surface 1b to the other side surface 1b. The frame plate 81 is attached to the frontage portion 10 of the heat insulating box body 50. The frame plate 81 is made of a metal plate having a certain degree of rigidity. As a result, the refrigerator can be reinforced. In order to reinforce the refrigerator, it is desirable to connect one side surface 1b and the other side surface 1b of the heat insulating box 50 forming the outer shell of the refrigerator with a frame plate 81.

The center plate 82 is an elongated thin plate-like member, and is arranged so as to overlap the frame plate 81. Since the center plate 82 is a member provided on the surface of the frontage portion 10 of the refrigerator 1, it is formed of a material having a aesthetic effect such as a decorative plate. The frame plate 81 and the center plate 82 are fixed to the heat insulating box body 50 with screws and screws (not shown).

The heat radiating pipe 25 is stretched around the partition wall 56 of the refrigerator 1 so as to surround the peripheral edge on the freezing chamber side. That is, the heat dissipation pipe 25, which is a long and narrow loop-shaped tubular body, meanders and crawls around the frontage portion 10 of the first freezing chamber 12, the ice making chamber 13, and the second freezing chamber 14. As a result, it is possible to suppress the occurrence of dew condensation at the frontage portion 10 of each freezing chamber.

Subsequently, the internal structure of the partition wall 56 in the vicinity of the frontage portion 10 will be described with reference to FIGS. 5 and 6. The partition wall 56 is formed by a part of the heat insulating box body 50. As shown in FIG. 5, in the vicinity of the frontage portion 10, the partition wall 56 includes an inner box 60, a heat insulating material 55, a heat radiating pipe 25, a lower support member 53 (including a spacer portion 58), a frame plate 81, and a center plate 82. , And a heat transfer auxiliary tape 83 and the like.

The partition wall 56 is fitted in the inner box 60. The upper surface of the partition wall 56 corresponds to the bottom surface of the refrigerator compartment 11, and the lower surface of the partition wall 56 corresponds to the top surface of the ice making chamber 13 and the second freezing chamber 14. On the front surface side of the inner box 60, an eaves portion 60d protruding forward from the upper surface of the partition wall 56 is provided.

The heat insulating material 55 is located on the front side of the heat insulating box 50 and below the eaves 60d. The heat insulating material 55 is formed of, for example, Styrofoam.

The frame plate 81 is arranged so as to cover the heat insulating material 55 at the frontage portion 10 of the partition wall 56. As shown in FIG. 5, the frame plate 81 has a shape in which the central portion in the vertical direction thereof protrudes toward the front surface side. That is, the frame plate 81 has a plurality of surfaces 81a, 81b, 81c having steps with each other. Further, there is a stepped portion 81d between the surfaces (that is, between the surfaces 81a and 81b and between the surfaces 81b and 81c).

Of these plurality of surfaces, the surface of the central portion protruding toward the front surface is the contact surface 81b with the back surface of the center plate 82. When the contact surface 81b of the frame plate 81 comes into contact with the center plate 82, the structural strength of the center plate 82 can be reinforced. Further, when the frame plate 81 is in contact with the heat radiating pipe 25, the heat from the heat radiating pipe 25 is transferred to the center plate 82 via the frame 81, so that the center plate 82 can be heated efficiently and the center plate 82 can be heated. The dew condensation suppressing effect can be improved. In this case, the frame plate 81 is preferably made of a material having high thermal conductivity. The main function of the frame plate 81 is to increase the structural strength of the refrigerator. Therefore, in consideration of both structural reinforcement and thermal conductivity, the frame plate 81 is preferably formed of, for example, a metal such as iron or aluminum, or a steel material.

Further, a heat radiating pipe 25 is arranged between the surface 81c recessed toward the back surface located below the frame plate 81 and the center plate 82. In the refrigerator 1 of the present embodiment, the heat radiating pipe is not provided in the front portion of the surface 81a recessed toward the back side located above the frame plate 81.

The lower support member 53 is arranged below the frame plate 81. The lower support member 53 supports the heat radiating pipe 25 from below. The lower support member 53 is composed of a main body portion 57 and a spacer portion 58. The main body 57 is a bent plate-shaped member having an L-shaped cross section. The main body 57 can be formed of a rigid material such as metal or a material having a certain degree of elasticity such as resin. The bent outer surface of the main body 57 is in contact with the front surface of the inner box 60. The other bent portion of the main body 57 constitutes the bottom of the partition wall 56.

The spacer portion 58 is a portion protruding from the main body portion 57 toward the front surface side. As shown in FIG. 6, the spacer portion 58 is attached to face the main body portion 57 constituting the bottom portion of the partition wall 56 and substantially parallel to each other. The spacer portion 58 is made of resin. The spacer portion 58 may be formed integrally with the main body portion 57, or may be formed as a separate member from the main body portion 57. When the spacer portion 58 is formed as a separate member from the main body portion 57, the spacer portion 58 is fitted or adhered to the main body portion 57 to be coupled to the main body portion 57. With such a configuration, the spacer portion 58 has a certain degree of springiness (elasticity) in the vertical direction.

As shown in FIG. 6, the spacer portion 58 is provided with an inclined surface 58a that comes into contact with the heat radiating pipe 25. The inclined surface 58a is provided below the back surface side of the heat radiating pipe 25, and is in contact with the outer peripheral surface below the back surface side of the heat radiating pipe 25 to push the heat radiating pipe 25 upward toward the front surface side (center plate 82 side). ..

As a result, when the center plate 82 is attached to the spacer portion 58 and the frame plate 81, the heat radiating pipe 25 moves upward along the back surface of the center plate 82 due to the action of the force received from the inclined surface 58a. It is pressed against the back surface of the center plate 82. Therefore, the heat radiating pipe 25 can be more reliably brought closer to the frontage portion 10 of the partition wall 56.

The outer peripheral surface of the heat radiating pipe 25 in contact with the inclined surface 58a of the spacer portion 58 is preferably a surface inclined with respect to the back surface of the center plate 82. As a result, it is possible to suppress the force applied from the inclined surface 58a to the heat radiating pipe 25 to be transmitted to only one of the front direction and the upward direction. Therefore, the heat radiating pipe 25 is subjected to stress appropriately distributed in the front direction and the upward direction through the outer peripheral surface. Therefore, the heat radiating pipe 25 can be pressed against the back surface of the center plate 82 while moving upward along the back surface of the center plate 82.

Further, the spacer portion 58 may be elastically deformed in a direction orthogonal to the outer peripheral surface of the heat radiating pipe 25 in contact with the spacer portion 58 while the center plate 82 is fixed to the frame plate 81. By elastically deforming the spacer portion 58 in this way, a part of the pressing force applied from the spacer portion 58 to the heat radiating pipe 25 can be absorbed by the elastic deformation of the spacer portion 58 itself, and the spacer portion 58 can be transferred to the heat radiating pipe 25. Even when an excessive pressing force is applied, the deformation of the heat radiating pipe can be suppressed.

The heat transfer auxiliary tape 83 is arranged between the heat radiating pipe 25 and the center plate 82. The heat transfer assist tape 83 is attached to the back surface of the center plate 82 at a contact position with the heat dissipation pipe 25. The heat transfer auxiliary tape 83 is made of a material such as butyl tape, which is relatively soft and adheres to the surface (outer peripheral surface) of the heat dissipation pipe 25. As a result, the heat generated from the heat radiating pipe 25 can be efficiently transferred to the center plate 82.

The center plate 82 is attached so as to cover the heat insulating material 55, the frame plate 81, the heat radiating pipe 25, and the spacer portion 58, and constitutes the outermost surface of the frontage portion 10 of the partition wall 56. The upper end and the lower end of the center plate 82 are bent portions 82a and 82b, respectively. These bent portions 82a and 82b are fitted inside the eaves portion 60d of the inner box 60 and the main body portion 57 of the lower support member 53.

Further, in the refrigerator 1 of the present embodiment, as described above, the frame plate 81 has a stepped portion 81d. The surface of the stepped portion 81d is an inclined surface inclined with respect to the center plate 82. As shown in FIG. 6, this inclined surface is inclined so as to rise from the rear side to the front side. On the other hand, the inclined surface 58a of the spacer portion 58 is inclined so as to descend from the rear side to the front side.

With this configuration, the space in which the heat radiating pipe 25 is arranged has a shape that expands from the rear side to the front side. The size of this space is designed so that, for example, the distance between the stepped portion 81d and the spacer portion 58 in the portion located behind the heat radiating pipe 25 is smaller than the diameter of the heat radiating pipe 25. Is preferable. As a result, the heat radiating pipe 25 can be moved to the center plate 82 side more reliably.

Further, the size of this space is preferably designed so that the distance from the stepped portion 81d spacer portion 58 in the portion located in front of the heat radiating pipe 25 is larger than the diameter of the heat radiating pipe 25. As a result, it is possible to prevent the center plate 82 from being deformed when the heat radiating pipe 25 tries to protrude forward from the center plate 82.

<Manufacturing method of partition wall part>
In the refrigerator 1 according to the present embodiment, when the center plate 82 is fitted into the frame plate 81 to which the heat radiating pipe 25 is temporarily fixed, the heat radiating pipe 25 is moved to the front surface of the refrigerator 1 by the action of the spacer portion 58 or the like. (That is, it can be guided to the frontage portion 10). Further, in the refrigerator 1 according to the present embodiment, the position of the heat radiating pipe 25 is changed by twisting the heat radiating pipe 25 located on the partition wall 56 in the middle of the manufacturing process. At this time, the heat radiating pipe 25 can be further guided to the front surface of the refrigerator 1 (that is, the frontage portion 10) by the action of the spacer portion 58 or the like. These points will be described below.

The partition wall 56 is an independent part, and a heat insulating material 55 is attached to a portion corresponding to the frontage portion 10. When the partition wall 56 is assembled in the inner box 60, the internal space is partitioned by the partition wall 56. The partition wall 56 has an upper inner box 60b forming an upper space and a lower inner box 60c forming a lower space. Then, the frame plate 81 is attached so as to cover the heat insulating material 55 on the frontage portion 10 of the partition wall 56. Next, the heat radiating pipe 25 is temporarily fixed to the recessed portion formed by the surface 81c of the frame plate 81 and the stepped portion 81d. Adhesive tape or the like may be used for temporary fixing. At this stage, it is not necessary to perform strict positioning of the heat radiating pipe 25. Therefore, for example, several places of the heat radiating pipe 25 may be temporarily fixed with adhesive tape.

Subsequently, the lower support member 53 is attached to the lower side of the frame plate 81. At this time, the inclined surface 58a of the frame plate 81 comes into contact with the heat radiating pipe 25. At this time, it is preferable that the upper portion of the heat radiating pipe 25 comes into contact with the stepped portion 81d. The lower support member 53 and the spacer portion 58 may be integrally formed with the partition wall 56. In this case, the frame plate 81 is assembled so as to be fitted between the lower support member 53 and the spacer portion 58. Next, the center plate 82 is attached so as to cover the heat insulating material 55, the frame plate 81, the heat radiating pipe 25, and the spacer portion 58.

By forming the partition wall 56 portion by the above flow, the heat radiating pipe 25 can be arranged so as to be in contact with the inclined surface 58a, the step portion 81d, and the center plate 82, respectively. That is, the elasticity of the spacer portion 58 serves as a starting force to push up the heat radiating pipe 25 upward. By contacting the inclined surface 58a and the stepped portion 81d, the heat radiating pipe 25 can change the above-mentioned upward force into a force in a direction of pressing against the inner surface of the center plate 82. Therefore, the heat radiating pipe 25 can be surely brought into contact with the center plate 82, and the dew condensation suppressing effect at the frontage portion 10 of the partition wall 56 can be improved.

Further, in the manufacturing process of the refrigerator 1, when the foamed heat insulating material is injected into the heat insulating box 50, the heat radiating pipe 25 is located along the partition wall 56 as shown by the broken line in FIG. It is possible. This is because when the U-shaped portion of the heat dissipation pipe 25 shown by the broken line in FIG. 7 is located along the front surface of the refrigerator 1, it interferes with the insertion work of the inner mold for defining the shape of the inner box 60 at the time of foaming. This is because it interferes with the injection work of the foamed heat insulating material.

At this time, the U-shaped portion of the heat radiating pipe 25 is arranged so as to penetrate the surface 81c of the frame plate 81 and face the back surface side. That is, a notch for arranging the U-shaped portion is formed on the surface 81c of the frame plate 81.

Then, in the manufacturing process of the refrigerator 1, after the foaming step of the heat insulating material injected into the heat insulating box 50, as shown in FIG. 7, the heat radiating pipe 25 is twisted in the direction of arrow A to change the position of the heat radiating pipe 25. doing. At this time, a downward force as shown by an arrow B in FIG. 7 acts on the heat radiating pipe 25 arranged on the back surface of the center plate 82.

In the partition wall 56 according to the present embodiment, since the spacer portion 58 having the inclined surface 58a in contact with the heat radiating pipe 25 is provided, the force acting on the heat radiating pipe 25 in the arrow B direction is applied in the arrow C direction (that is, that is). , Front side) can be changed (see FIG. 7). Therefore, the heat radiating pipe 25 arranged on the partition wall 56 can be pushed toward the front side. As described above, by going through the steps shown in FIG. 7, the effect of pushing the heat radiating pipe 25 to the front side can be exhibited even when the spacer portion 58 is made of a rigid body having relatively poor elasticity.

In the refrigerator 1, the frontage portion 10 between the first freezing chamber 12 in the lower stage, the ice making chamber 13 in the middle stage, and the second freezing chamber 14 passes through the frontage portion 10 above and below the frontage portion 10. A row of heat dissipation pipes 25 are arranged (see FIG. 2). The above-mentioned arrangement configuration of the heat dissipation pipe can be applied to this portion as well.

<About the composition of the bottom of the refrigerator frontage>
Subsequently, the arrangement configuration of the heat radiating pipe 25 at the bottom of the frontage portion 10 of the refrigerator 1 will be described with reference to FIGS. 8 and 9. FIG. 8 is a cross-sectional view of the refrigerator 1 shown in FIG. 4 taken along line XX. FIG. 9 is a diagram showing the configuration of the bottom portion of the heat insulating box body 50. Note that FIG. 9 shows the configuration of a portion substantially the same as that of FIG.

The heat insulating box body 50 has an inner box 60, a bottom plate 41, and a base plate (front plate-like member) 70, which form the bottom of the frontage portion 10 of the refrigerator 1. The inner box 60 has a bent end portion (protruding end portion) 61 at a position corresponding to the frontage portion 10 of the refrigerator 1. The bent end portion 61 is formed by bending the main body portion 60a of the inner box 60. The configuration of the frontage portion at the bottom of the refrigerator 1 including the bent end portion 61 of the base plate 70 and the inner box 60 is also an example of the configuration of the present invention.

The bent end 61 has flat contact surfaces 62.64 that come into contact with the base plate 70. In the present embodiment, the contact surfaces 62 and 64 are recessed one step inward from the bent surface 61a of the bent end portion 61. Further, the contact surfaces 62 and 64 are flush with each other. A heat insulating material sealing portion 63 is provided between the two contact surfaces 62 and 64. The heat insulating material sealing portion 63 is formed by recessing the flush contact surfaces 62 and 64 inward. In the present embodiment, the cross section of the heat insulating material sealing portion 63 is U-shaped, but the present invention is not limited to this. The heat insulating material sealing portion 63 is fitted into the folded space (that is, the accommodating portion 73) of the base plate 70 described later, and seals the heat insulating material in the space formed by the inner box 60, the base plate 70, and the bottom plate 41. I wish I could.

Further, an inclined portion 65 inclined inward is provided at the tip of the bent end portion 61. The inclined portion 65 functions as a guide member that directs the second spacer 31 in the space toward the back side when the bent end portion 61 is inserted into the folded space of the base plate 70. Further, the bent end portion 61 of the present embodiment is provided with a tip surface 66 substantially parallel to the contact surfaces 62 and 64 at the tip of the inclined portion 65.

The bottom plate 41 has a main body portion 41a and a flange portion 41b formed by bending the front surface portion of the main body portion 41a.

As shown in FIG. 10, the base plate 70 extends from the left side surface to the right side surface along the bottom of the frontage portion 10 of the refrigerator 1. As shown in FIGS. 8 and 9, the base plate 70 has a folded-back portion 72 in which one plate-shaped member is folded back. As shown in FIGS. 8 and 9, the folded-back portion 72 has a substantially U-shaped cross section. The heat radiating pipe 25 and the second spacer 31 are housed inside the space having a substantially U-shaped cross section formed in this way. That is, this folded space is the accommodating portion 73. Further, the bent end portion 61 of the inner box 60 is also inserted into the accommodating portion 73.

In the present embodiment, the width of the accommodating portion 73 gradually decreases from the bottom to the upper side. That is, the upper part has a narrowed shape. Then, the tip end portion of the folded-back portion 72, that is, the upper end portion 74 on the back surface side of the accommodating portion 73 is bent in the direction in which the width of the opening of the accommodating portion 73 widens. Therefore, in the accommodating portion 73, the opening width at the bent portion 74a is the smallest.

Then, the protruding height of the heat insulating material sealing portion 63 protruding from the contact surfaces 62 and 64 of the bent end portion 61 of the inner box 60 inserted into the accommodating portion 73 is slightly larger than the width of the accommodating portion 73 in the bent portion 74a. It is designed to be large. The base plate 70 is made of metal such as steel and has elasticity by itself. Further, the material of the inner box 60 is made of resin such as ABS, and can be slightly bent by a load. Therefore, the shapes of the accommodating portion 73 and the bent portion 74a, which are a part of the base plate 70, form a clip, and the bent portion 74a acts as a holding force for holding the heat insulating material sealing portion 63. As a result, when the bent end 61 of the inner box 60 is inserted into the accommodating portion 73, the heat insulating material sealing portion 63 is locked at the position of the bent portion 74a, and the bent end 61 is fitted into the accommodating portion 73. be able to.

As described above, in the bottom portion of the refrigerator 1 of the present embodiment, the heat radiating pipe 25 and the second spacer portion 31 are held in the space formed by the accommodating portion 73 of the base plate 70 and the bent end portion 61. Then, when the bent end portion 61 is fitted into the accommodating portion 73, the heat radiating pipe 25 moves upward along the back surface of the base plate 70 due to the action of the force received from the second spacer portion 31, and the bent end portion 61 is fitted. It is pressed against the back surface of the base plate 70 via the portion 61. Therefore, the heat radiating pipe 25 can be more reliably brought closer to the frontage portion 10.

<How to assemble the bottom of the heat insulating box>
Subsequently, a method of assembling the bottom portion of the heat insulating box 50 will be described with reference to FIG. FIG. 10 shows how the heat radiating pipe 25, the outer box 40, and the base plate 70 are attached to the inner box 60.

As shown in FIG. 10, in the heat insulating box body 50, the outer circumference of the inner box 60 is covered with an outer box 40, a bottom plate 41 (not shown in FIG. 10), a base plate 70, and the like to form the outer shape of the refrigerator 1. doing. The outer box 40 is a plate-shaped member in which the upper surface 1a portion of the refrigerator 1 and the side surface 1b and 1b portions on the left and right sides are integrated, and the plate-shaped member forming the back surface 1c portion of the refrigerator 1. (Not shown in FIG. 10).

When assembling the heat insulating box body 50 having the above configuration, first, the heat radiating pipe 25 is temporarily fixed to the inner box 60. At this time, the second spacer 31 arranged in contact with the heat radiating pipe 25 in the accommodating portion 73 is wound together with the heat radiating pipe 25 by using an adhesive tape or the like. Therefore, when the heat radiating pipe 25 is temporarily fixed, the second spacer 31 is also temporarily fixed to the inner box 60. At this time, the heat radiating pipe 25 is temporarily fixed with an adhesive tape so as to touch the heat insulating material sealing portion 63 and the contact surface 64 of the bent end portion 61 of the inner box 60. However, at this stage, the heat radiating pipe 25 does not have to be strictly positioned, and may be floated from the heat insulating material sealing portion 63. Therefore, for example, several places of the heat radiating pipe 25 may be temporarily fixed with adhesive tape.

FIG. 10 shows only the heat radiating pipe 25 (25a) located at the frontage portion 10 of the refrigerator 1. Therefore, although not shown in FIG. 10, the heat radiating pipes 25 (25b and 25c) located on the side surface 1b of the refrigerator are fixed to the inside of the outer box 40 with an adhesive tape having thermal conductivity such as aluminum tape. ..

Next, the base plate 70 is fitted into the bottom of the frontage portion 10 of the inner box 60. After that, the outer box 40 is covered so as to cover the outer circumference of the inner box 60 to which the heat radiating pipe 25 is temporarily fixed. At this time, for example, after first covering the outer box 40 forming the upper surface 1a and the side surface 1b of the refrigerator 1, the bottom plate 41 forming the bottom surface 1d of the refrigerator 1 can be attached.

Finally, a member constituting the back surface 1c is attached so as to cover the back surface of the heat insulating box body 50. The method of attaching the outer box described here is an example, and the present invention is not limited to this method.

<Process of fitting the base plate into the inner box>
In the refrigerator 1 according to the present embodiment, when the base plate 70 is fitted into the inner box 60 to which the heat radiating pipe 25 is temporarily fixed, the heat radiating pipe 25 is moved to the refrigerator 1 by the action of the second spacer 31 or the like. It can be guided to the front surface (that is, the frontage portion 10). This point will be described below with reference to FIG. In FIG. 11, the steps of fitting the base plate 70 into the inner box 60 are shown in order from (a) to (c).

As described above, in the refrigerator 1 of the present embodiment, the heat radiating pipe 25 located at the bottom of the frontage portion 10 is temporarily fixed to the tip end portion of the bent end portion 61 of the inner box 60 together with the second spacer 31 in advance. There is. In the present embodiment, the second spacer 31 has a relatively high rigidity and has a circular cross section like the heat radiating pipe 25. The second spacer 31 does not necessarily have to be hollow (cylindrical shape), and may have a solid cylindrical shape. Further, as the material of the second spacer 31, it is desirable that the material has relatively high thermal conductivity. For example, aluminum, copper, or the like can be used as the material of the spacer 31.

As described above, when the base plate 70 is attached to the inner box 60, the bent end portion 61 of the inner box 60 is inserted into the accommodating portion 73 having a U-shaped cross section formed by the folded portion 72 of the base plate 70. (See FIG. 11 (a)). At this time, as shown in FIG. 11A, the heat radiating pipe 25 and the second spacer 31 are arranged in the vertical direction and are positioned substantially vertically along the shape of the bent end portion 61.

The second spacer 31 is arranged along the heat radiating pipe 25 over almost the entire area of the heat radiating pipe 25 located at the bottom of the frontage portion 10. As a result, the heat radiating pipe 25 can be more reliably aligned in the accommodating portion 73.

At the stage shown in FIG. 11A, the second spacer 31 having a circular cross section is wound and bundled together with the heat radiating pipe 25 at several places with an adhesive tape or the like and is simply bonded. In this state, the second spacer 31 is temporarily fixed to the bent end 61 of the inner box 60 together with the heat radiating pipe 25.

After that, as the base plate 70 is lifted upward (see arrow A), the second spacer 31 is guided to the back side of the accommodating portion 73 by the guide member 65 provided on the tip end side of the bent end portion 61 of the inner box 60. (See arrow B). At this time, since the heat radiating pipe 25 and the spacer 31 are simply wound and bundled, the spacer 31 is movable. Since the heat radiating pipe 25 and the spacer 31 can slide while being in contact with each other on their circular surfaces, the spacer 31 rotates shortly along the outer peripheral surface of the heat radiating pipe 25.

Then, as shown in FIG. 11B, when the base plate 70 is further lifted upward, the second spacer 31 comes into contact with the bottom surface of the accommodating portion 73. At this time, the second spacer 31 is guided toward the corner portion 73a on the back side of the accommodating portion 73 by the guide member 65.

When the bent end portion 61 is completely fitted into the accommodating portion 73, the outer peripheral surface of the second spacer 31 comes into contact with the curved surface of the corner portion 73a, as shown in FIG. 11C. At this time, due to the force (arrow X) received by the second spacer 31 from the bottom surface of the accommodating portion 73, a force (arrow Y) that pushes the heat radiating pipe 25 toward the corner portion 61b of the bent end portion 61 acts. Therefore, it is possible to arrange the heat radiating pipe 25 at a desired position (that is, a position where the effect of suppressing dew exposure is enhanced) without performing strict alignment at the stage of temporarily fixing the heat radiating pipe 25 to the inner box 60 before fitting. it can. At this time, the force of the arrow Y is the resultant force of the force received by the spacer 31 from the bottom surface of the accommodating portion 73 (arrow X = arrow y1) and the drag force received by the spacer 31 from the holding force of the corner portion 73a (arrow y2).

The heat radiating pipe has a shape and a material that is thin and easy to bend. It is very difficult to attach a heat radiating pipe having such characteristics to an inner box made of thin resin with high accuracy. Further, the heat radiating pipe is a long loop-shaped bent molded product. Therefore, for example, the width is narrow and the mounting accuracy is relatively high so that the displacement of the heat radiating pipe can be absorbed, except for the places where the mounting accuracy is higher when mounting to the inner box, such as the partition of each storage space of the refrigerator. Loose parts are needed. However, in the conventional method of attaching the heat radiating pipe, there are many structures that cannot be realized unless the entire heat radiating pipe is accurately attached to the groove formed in the inner box.

On the other hand, in the mounting structure of the heat radiating pipe 25 in the refrigerator 1 of the present embodiment, the position of the heat radiating pipe 25 at the bottom of the frontage portion 10 is due to the pushing force of the second spacer 31 generated when the base plate 70 is fitted. Can be re-defined. As a result, it is possible to correct the bending and slight bending existing in the heat radiating pipe 25. Therefore, the heat radiating pipe 25, which is unlikely to have a perfect linear shape due to its characteristics, can be arranged at a desired position at the bottom of the frontage portion 10.

In this embodiment, a rigid material such as metal is used as the material of the second spacer 31. Therefore, even when the bent end portion 61 of the inner box 60 is pushed slightly deeper into the accommodating portion 73 of the base plate 70, the heat dissipation pipe 25 is pushed by the drag of the second spacer 31 having rigidity. Can be pushed in the direction of. Therefore, the heat radiating pipe 25 can be brought closer to the frontage portion 10 on the front surface of the refrigerator 1.

Further, when the second spacer 31 has rigidity, a force for fitting the base plate 70 (arrow y1 in FIG. 11C) as compared with a spacer member formed of an elastic body (for example, sponge, butyl rubber, etc.). Can be more reliably converted into a force by which the second spacer 31 pushes the heat radiation pipe 25 (arrow Y in FIG. 11C). As a result, the heat radiating pipe 25 can be brought into close contact with the front surface (contact surface 64 in the case of this embodiment) side of the accommodation space.

Further, when the second spacer 31 is formed of a metal (copper, aluminum, etc.) having high thermal conductivity like the heat dissipation pipe 25, heat is transferred from the heat dissipation pipe 25 to the second spacer 31, and the heat is further transferred. , Can be transmitted to the folded-back portion 72 forming the accommodating portion 73. As a result, the base plate 70 and the bottom plate 41 around the frontage portion 10 can be warmed, and the occurrence of dew can be further suppressed. It is preferable that the shape of the outer peripheral surface of the second spacer 31 and the curved shape of the inner surface of the corner portion 73a of the accommodating portion 73 are substantially equal. As a result, heat transfer from the second spacer 31 to the accommodating portion 73 can be further promoted.

The dimensions of the accommodating space formed by the accommodating portion 73 and the bent end portion 61 (specifically, the distance from the corner portion 73a to the corner portion 61b) are properly aligned with each other in the heat radiating pipe 25. It is preferable that the outer diameter is slightly smaller than the total of the outer diameter of the spacer 31. As a result, the heat dissipation pipe and the spacer can be made to bite into the minute clearance of the accommodation space (for example, the space surrounded by the folded portion 72 or the gap between the folded portion 72 and the contact surface 64), and heat is dissipated. The pipe 25 can be reliably brought into close contact with the contact surface 64.

If the force of the second spacer 31 pushing the heat dissipation pipe 25 and the direction of the force of fitting the base plate 70 are the same, the repulsive force pushed back from the heat dissipation pipe 25 acts in the direction of removing the base plate 70, so that the heat dissipation pipe It becomes difficult to bring the 25 into close contact with the accommodation space. Therefore, as in the configuration of the present embodiment, the directions of the force by which the second spacer 31 pushes the heat radiating pipe 25 (arrow Y) and the force for fitting the base plate 70 (arrow X in FIG. 11C) are the same. It is preferable that there is no such thing. As a result, the holding force (arrow y2 in FIG. 11C) of the shape inside the accommodating portion 73 acts on the force (arrow Y) that the second spacer 31 pushes the heat radiating pipe 25. The heat radiating pipe 25 can be pressed against the contact surface 64 of the bent end portion 61.

Further, in the configuration of the present embodiment, at the stage of being temporarily fixed to the bent end portion 61, the heat radiating pipe 25 and the second spacer 31 are arranged in the vertical direction along the shape of the bent end portion 61 and are substantially vertical. Is located in. Then, as shown in FIG. 11A, the depth width of the heat radiating pipe 25 and the second spacer 31 arranged substantially vertically is sufficiently smaller than the width of the accommodating portion 73 in the bent portion 74a. Therefore, the bent end portion 61 in a state where the heat radiating pipe 25 and the second spacer 31 are temporarily fixed can be easily inserted into the accommodating portion 73.

<Effect>
As described above, the refrigerator 1 according to the present embodiment is provided with a spacer portion 58 that pushes the heat radiating pipe 25 arranged at the frontage portion 10 of the partition wall 56 toward the center plate 82 side. With this configuration, the heat radiating pipe 25 can be arranged on the partition wall 56 so as to be closer to the frontage portion 10. Therefore, the effect of suppressing dew condensation at the partition portion of the refrigerator can be enhanced.

Further, in the refrigerator 1 according to the present embodiment, the heat radiating pipe 25 and the second spacer 31 are housed in the housing portion 73 of the base plate 70 arranged at the bottom of the frontage portion 10. The second spacer 31 is provided below the back surface side of the heat radiating pipe 25, and is configured to push the heat radiating pipe 25 toward the front surface side.

According to such a configuration, at the time of accommodating the heat radiating pipe 25 in the accommodating portion 73, the heat radiating pipe is installed at the time when the installation in the accommodating portion 73 is completed without strict alignment of the heat radiating pipe. It can be fixedly arranged on the front side (front side) of the storage portion closer to the frontage portion of the refrigerator. By arranging the heat radiating pipe near the frontage of the refrigerator, the effect of suppressing dew condensation at the frontage can be enhanced.

In recent refrigerators, the use of vacuum heat insulating materials with higher heat insulating performance is being promoted in order to further improve the energy saving performance. In addition, considering the impact on the environment, it is basic to operate the refrigeration cycle with a low load. As a result, the temperature of the refrigerant flowing through the heat radiating pipe tends to decrease. When the temperature of the heat radiating pipe is lowered in this way, it becomes difficult to suppress the dew condensation by the heat radiating pipe performed at the frontage portion of the refrigerator. Therefore, arranging the heat radiating pipe closer to the frontage of the refrigerator greatly affects the suppression of dew.

According to the refrigerator 1 of the present embodiment, when the base plate is attached to the inner box, the heat radiating pipe can be pushed out to the front surface so as to come into contact with the frontage portion of the refrigerator by the action of the spacer. Therefore, the heat radiating pipe can be brought into contact with the frontage portion without strict alignment of the heat radiating pipe at the stage before assembly, and the heat generated from the heat radiating pipe can be efficiently transferred to the frontage portion. Therefore, the effect of suppressing dew on the bottom of the frontage can be improved.

<Second embodiment>
Subsequently, a second embodiment of the present invention will be described. In the second embodiment, the structure of the partition portion of the frontage portion 10 of the refrigerator 1 is different from that of the first embodiment. With respect to other configurations, basically the same configurations as in the first embodiment can be applied. Therefore, in the second embodiment, only the points different from those in the first embodiment will be described.

In the first embodiment described above, the configuration in which the spacer portion 58 having the inclined surface 58a is provided on the lower support member 53 has been described. However, in the present invention, a spacer portion having a shape different from that of the first embodiment may be provided as a member separate from the lower support member 53. Therefore, as a second embodiment, a configuration in which a spacer portion having a circular cross section is provided as in the heat radiating pipe will be described as an example.

FIG. 12 shows a cross-sectional configuration of a frontage portion of the partition wall 156 of the refrigerator 1 according to the second embodiment. Similar to the first embodiment, the partition wall 156 is formed by a part of the heat insulating box body 50. As shown in FIG. 12, in the vicinity of the frontage portion 10, the partition wall 156 includes an inner box 60, a heat insulating material 55, a heat radiating pipe 25, a lower support member 153, a spacer 158, a frame plate 81, a center plate 82, and heat transfer. It has an auxiliary tape 83 and the like.

In the partition wall 156, the same configuration as in the first embodiment can be applied to the configurations other than the lower support member 153 and the spacer 158.

The lower support member 153 is arranged below the frame plate 81. The lower support member 153 supports the spacer 158, which will be described later, from below. The lower support member 153 is composed of a main body portion 157 and a spacer support portion 159. The main body portion 157 is a bent plate-shaped member having an L-shaped cross section. The main body portion 157 can be formed of a rigid material such as metal or a material having a certain degree of elasticity such as resin. The bent outer surface of the main body 157 is in contact with the front surface of the inner box 60. The other bent portion of the main body 157 constitutes the bottom of the partition wall 156.

The spacer support portion 159 is a portion protruding from the main body portion 157 toward the front surface side. As shown in FIG. 12, the spacer support portion 159 is attached to face the main body portion 157 constituting the bottom portion of the partition wall 56 and substantially parallel to each other. The spacer support portion 159 is made of resin. The spacer support portion 159 is integrally formed with the main body portion 157. With such a configuration, the spacer support portion 159 has a certain degree of springiness in the vertical direction.

As shown in FIG. 12, a spacer 158 is arranged on the spacer support portion 159. In the present embodiment, the spacer 158 has a relatively high rigidity and has a circular cross section like the heat radiating pipe 25. The spacer 158 does not necessarily have to be hollow (cylindrical shape), and may have a solid cylindrical shape.

At the tip of the spacer support portion 159, a folded-back portion 159a is provided to prevent the spacer 158 from moving to the front side. The diameter of the spacer 158 is equal to or less than the diameter of the heat radiating pipe 25. The spacer 158 is located on the back side of the center of the heat radiating pipe 25. The spacer 158 is provided below the back surface side of the heat dissipation pipe 25, and is pushed upward by the elastic spacer support portion 159. The spacer 158 pushes the heat radiating pipe 25 toward the stepped portion 81d on its cylindrical surface (outer peripheral surface) to change the direction of the force in the direct upward direction in the forward direction, and pushes the heat radiating pipe 25 to the front side (center plate 82 side). Pushing to.

As described above, the refrigerator 1 according to the present embodiment is provided with a spacer 158 that pushes the heat radiating pipe 25 arranged at the frontage portion 10 of the partition wall 156 toward the center plate 82 side. With this configuration, the heat radiating pipe 25 can be arranged on the partition wall 156 so as to be closer to the frontage portion 10. Therefore, the effect of suppressing dew condensation at the partition portion of the refrigerator can be enhanced.

<Third embodiment>
Subsequently, a third embodiment of the present invention will be described. In the third embodiment, the configuration of the heat radiating pipe arranged in the frontage portion 10 of the refrigerator 1 is different from that of the first embodiment. With respect to other configurations, basically the same configurations as in the first embodiment can be applied. Therefore, in the third embodiment, only the points different from those in the first embodiment will be described.

In the first embodiment described above, the configuration in which the heat dissipation pipe 25 (25a) is provided only in the frontage portion 10 of the middle to lower stage portion where the freezing chamber and the ice making chamber are arranged has been described. However, the present invention is not limited to such a configuration, and the heat radiating pipe may be laid over the entire frontage portion of the refrigerator including the refrigerating chamber portion. Therefore, in the third embodiment, a configuration in which a heat radiating pipe is also provided at the frontage portion on the refrigerating chamber side will be described.

FIG. 13 shows the configuration of the frontage portion 10 of the refrigerator 200 according to the third embodiment. As shown in FIG. 13, in the refrigerator 200, the refrigerating chamber 11 is arranged at the uppermost stage, and the first freezing chamber 12 is arranged at the lowermost stage. Further, in the middle stage of the refrigerator 1, the ice making chamber 13 is arranged on the left side, and the second freezing chamber 14 is arranged on the right side.

Similar to the first embodiment, heat dissipation pipes 125 are provided in each part of the refrigerator 200. The heat dissipation pipe 125 is roughly classified into a frontage heat dissipation pipe 125a, a right side heat dissipation pipe 25b, a left side heat dissipation pipe 25c, and a rear heat dissipation pipe 25d (see FIG. 2). The frontage heat dissipation pipe 125a is arranged at the frontage 10 between the refrigerator body and the door.

As shown in FIG. 13, the frontage heat dissipation pipe 125a is stretched around all the storage chambers of the refrigerator 200. As a result, it is possible to suppress the occurrence of dew condensation in the frontage portion 10 not only in the freezing space but also in the refrigerating chamber 11.

As shown in FIG. 13, in the refrigerator 200, heat radiating pipes 125 are arranged on the partition walls 256, 257, and 258 that partition each storage space. As for the method of arranging the heat radiating pipe 125 on each partition wall, the same method as in the first embodiment can be adopted.

In the refrigerator 200 of the present embodiment, heat dissipation pipes 125 are arranged in two rows on each of the partition walls 256, 257, and 258. For example, in the partition wall 256, the frontage portion 10 between the first refrigerating chamber 11 in the upper stage, the ice making chamber 13 in the middle stage, and the second freezing chamber 14 passes through the frontage portion 10 above and below the frontage portion 10. A row of heat dissipation pipes 125 are arranged.

As for the heat radiating pipe 125 passing below the frontage portion 10, the heat radiating pipe arrangement configuration described with reference to FIG. 5 and the like can be applied. The heat radiating pipe 125 passing above the frontage portion 10 can also be arranged between the frame plate 81 and the center plate 82 by applying the same method. That is, the heat radiating pipe 125 can be arranged together with the spacer portion in the space formed between the frame plate 81 and the center plate 82 above the frame plate 81.

At this time, by arranging the spacer portion so as to push the heat radiating pipe 125 toward the center plate 82, the heat radiating pipe 125 can be surely brought into contact with the center plate 82. Therefore, the dew condensation suppressing effect at the frontage portion 10 of the partition wall 256 can be improved. For the other partition walls 257 and 258, the heat dissipation pipe 125 may be arranged in the same manner as described above.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims are included. In addition, a configuration obtained by combining the configurations of different embodiments described in the present specification with each other is also included in the scope of the present invention.

1: Refrigerator 10: Frontage 11: Refrigerator room 12: First freezer room 13: Ice making room 14: Second freezer room 20: Refrigerator cycle 25: Heat dissipation pipe 31: Second spacer 40: Outer box 50: Insulation Box 56: Partition wall (partition)
58: Spacer part 60: Inner box 61: Bent end part (support member)
63: Insulation material sealing part (support member)
64: Contact surface (support member)
65: Inclined part (support member)
70: Base plate (base member)
73: Accommodating part 81: Frame plate (support member)
82: Center plate (front plate-shaped member)

Claims (5)

The front plate-shaped member that constitutes the front of the frontage of the refrigerator,
A heat radiating pipe arranged on the back side of the front plate-shaped member and through which the refrigerant warmed by the refrigeration cycle in the refrigerator passes through the inside.
A support member that supports the heat dissipation pipe and
It is arranged diagonally behind the heat radiating pipe, and when the support member is fixed to the front plate-shaped member, the heat radiating pipe is moved along the back surface of the front plate-shaped member and the back side of the front plate-shaped member. and a spacer portion for pressing to,
An inclined portion located between the back surface of the front plate-shaped member and the spacer portion and inclined away from the back surface of the front plate-shaped member in a direction away from the heat radiating pipe.
A refrigerator provided at a position facing the inclined portion in the front-rear direction, and provided with a corner portion that restricts the movement of the spacer portion when the support member is fixed to the front plate-shaped member . With the movement of the spacer portion restricted , the spacer portion comes into contact with the outer peripheral surface of the heat radiating pipe that is inclined with respect to the back surface of the front plate-shaped member on the rear side of the heat radiating pipe. The refrigerator according to claim 1 , wherein the corner portion is arranged. The refrigerator according to claim 2, wherein the spacer portion is elastically deformed in a direction orthogonal to the outer peripheral surface of the heat radiating pipe while the support member is fixed to the front plate-shaped member. The refrigerator according to any one of claims 1 to 3, wherein the spacer portion has good thermal conductivity, and the corner portion and the front plate-shaped member have high thermal conductivity . The refrigerator according to claim 4, wherein the support member has a surface that contacts the back surface of the front plate-shaped member.

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