JPWO2020003587A1 - refrigerator - Google Patents

Abstract

The refrigerator (1) includes a heat insulating box (50), an external electrical unit (41), and a machine room (30). The heat insulating box body (50) has an outer box (51) and an inner box (52). The external electrical equipment unit (41) is arranged in either the upper part or the lower part of the heat insulating box body (50). The machine room (30) is arranged in the other of the upper part and the lower part of the heat insulating box (50) (that is, the side opposite to the arrangement side of the external electrical equipment unit (41)), such as the compressor (31). Contains mechanical parts. The refrigerator (1) has at least one wiring (machine room wiring) (21) connecting the external electrical equipment unit (41) and the machine parts. This wiring (21) is fixed to the outer box (51).

Description

The present disclosure relates to a refrigerator provided with a heat insulating box.

Generally, the refrigerator is provided with a heat insulating box so as to cover the outer periphery of the storage space in order to insulate the refrigerator from the surroundings. The heat insulating box body is composed of an outer box, an inner box, and a heat insulating material filled between them. As the heat insulating material, for example, a foamable heat insulating material such as a rigid urethane foam heat insulating material is used.

Further, inside the heat insulating box, in addition to the heat insulating material, there are also electrical wiring for connecting various electronic components such as a control board, a switch, and a motor arranged in the refrigerator. Such electrical wiring exists so as to be embedded in the heat insulating material.

For example, Patent Document 1 discloses a refrigerator in which an electric lead wire 22 extending from an electrical unit 21 arranged on the top surface 20 of the refrigerator body is wired along the back surface of an inner box 3 of the refrigerator body. In this refrigerator, the electric lead wire 22 is fixed to the back surface of the inner box via a plurality of spacer members 23 made of a heat insulating material, and a foamed heat insulating material is provided between the electric lead wire 22 between the spacer members 23 and the inner box. 4 is filled and foamed to intervene.

Japanese Unexamined Patent Publication No. 2016-44907

In a conventional refrigerator like the refrigerator of Patent Document 1, the wiring passing through the inside of the heat insulating box is arranged on the inner box side.

By the way, when injecting the foamed heat insulating material into the heat insulating box, the outer box is placed on the upper side and the inner box is placed on the lower side, and heat is insulated from the opening (injection port) formed in the back portion of the outer box. Drop the material. The foamed heat insulating material injected into the heat insulating box first starts foaming from the inner box side located on the lower side and expands toward the outer box side. However, if the wiring is laid inside the heat insulating box, the wiring may hinder the formation of the foamed heat insulating material when the heat insulating material is foamed. In particular, if the wiring straddles the outer box and the inner box, it tends to become an obstacle during foaming. As a result, there may be voids or the like in the heat insulating box in which the foamed heat insulating material is not filled, and the heat insulating performance may be deteriorated. That is, the fluidity of the heat insulating material is hindered by the wiring.

Therefore, an object of the present invention is to provide a refrigerator capable of further improving the heat insulating performance of the heat insulating box body.

The refrigerator according to one aspect of the present invention includes a heat insulating box body having an outer box and an inner box, an electrical unit arranged at either the upper part or the lower part of the heat insulating box body, and the heat insulating box body. It is provided on the other side of the upper part and the lower part of the machine, and includes a machine room for accommodating electric parts and at least one wiring connecting the electric unit and the electric parts. Then, the wiring is fixed to the outer box.

In the refrigerator according to one aspect of the present invention, the heat insulating box body has a vacuum heat insulating material, and the wiring may be arranged between the vacuum heat insulating material and the outer box.

In the refrigerator according to one aspect of the present invention, the refrigerator further includes a sealing member for fixing the wiring to the outer box, and one end of the sealing member is between the vacuum heat insulating material and the outer box. It is sandwiched and the other end of the sealing member may extend to at least one end of the upper and lower parts of the heat insulating box.

In the refrigerator according to one aspect of the present invention, the heat insulating box has a heat radiating pipe, and the heat radiating pipe may be fixed by the sealing member.

The refrigerator according to one aspect of the present invention has a plurality of wirings, and the wirings are classified into high-voltage AC wiring and low-voltage DC wiring, and the high-voltage AC wiring and the above-mentioned wiring. The wiring for low-voltage direct current may be arranged apart from each other.

In the refrigerator according to one aspect of the present invention, the plurality of wirings may be arranged side by side along the plane of the outer box.

According to the refrigerator according to one aspect of the present invention, by fixing the wiring connecting the electrical unit and the electric component arranged in the machine room to the outer box, the generation of voids in the heat insulating layer of the heat insulating box is generated. It can be suppressed, and the heat insulating performance of the heat insulating box can be further improved.

It is a side sectional view which shows the internal structure of the refrigerator which concerns on one Embodiment of this invention. It is sectional drawing which shows the internal structure of the heat insulating box body of the refrigerator shown in FIG. It is a top view which shows the structure of the back part inside the heat insulating box body of the refrigerator which concerns on 1st Embodiment. It is sectional drawing which shows the structure of the BB line part of the heat insulating box shown in FIG. It is a top view which shows the structure of the back part inside the heat insulating box body of the refrigerator which concerns on 2nd Embodiment. It is a top view which shows the structure of the back part inside the heat insulating box body of the refrigerator which concerns on 3rd Embodiment. It is sectional drawing which shows the structure of the CC line part of the heat insulating box shown in FIG. It is a top view which shows the structure of the back part inside the heat insulating box body of the refrigerator which concerns on 4th Embodiment. It is sectional drawing which shows the structure of the DD line part of the heat insulating box shown in FIG. It is sectional drawing which shows the internal structure of the heat insulating box body of the refrigerator which concerns on the modification of 1st Embodiment. It is sectional drawing which shows the internal structure of the heat insulating box body of the refrigerator which concerns on 5th Embodiment. It is sectional drawing which shows the internal structure of the heat insulating box body of the refrigerator which concerns on the modification of 5th Embodiment.

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 present embodiment, as an example of the heat insulating structure of the present invention, a heat insulating box provided in a refrigerator will be described as an example. However, the present invention is not limited to this.

(Overall configuration of refrigerator)
First, the overall configuration of the refrigerator 1 according to the present embodiment will be described. FIG. 1 is a side sectional view showing the overall configuration of the refrigerator 1 according to the present embodiment. FIG. 2 shows the cross-sectional structure of the heat insulating box 50 constituting the refrigerator 1. FIG. 2 corresponds to the cross section of the AA line portion of FIG.

As shown in FIG. 1, the refrigerator 1 includes a plurality of storage chambers such as a refrigerator compartment 11. The refrigerating room 11 is provided with a refrigerating room door 11a. Other storage rooms also have doors at the openings.

In the present embodiment, the surface provided with the door is the front surface (front surface) of the refrigerator. Then, with reference to the front surface, each surface of the refrigerator 1 is defined as an upper surface, a side surface, a back surface, and a bottom surface based on the positions existing when the refrigerator 1 is installed in a normal state.

The refrigerator 1 is provided with a heat insulating box 50 as a heat insulating structure for insulating each storage space from the surroundings. The heat insulating box body 50 is provided so as to cover the outer periphery of the refrigerator 1. The heat insulating box body 50 mainly includes an outer box 51, an inner box 52, a heat insulating layer (foam heat insulating material) 53, a vacuum heat insulating material (VIP) 54, and the like (see FIG. 2).

In the present specification, the outer surfaces of the heat insulating box 50 are referred to as an upper surface portion 51a, a bottom surface portion 51b, a back surface portion 51c, and a side surface portion 51d, respectively, in combination with the designation of each surface of the refrigerator 1.

A refrigeration cycle is provided inside the refrigerator 1. In the refrigeration cycle, the compressor 31, the condenser (not shown), the expander (not shown), the cooler (not shown), and the like pass through the refrigerant pipe (refrigerant flow path) through which the refrigerant flows. It is connected and configured.

Further, a control unit is provided inside the refrigerator 1. This control unit controls the operation of the refrigeration cycle. That is, when the control unit drives the compressor 31, the operation of the refrigeration cycle is started, and the refrigerant flows in the cycle. The high-temperature and high-pressure refrigerant compressed by the compressor 31 is condensed while dissipating heat in the condenser. Subsequently, the high-temperature refrigerant expands in the expander to a low-temperature low-pressure, and is sent to the cooler as an evaporator. The refrigerant flowing into the cooler exchanges heat with the cold air flowing through the cooling chamber, evaporates while absorbing heat, becomes a low-temperature gas refrigerant, and is sent to the compressor 31. In this way, the refrigerant circulates to operate the refrigeration cycle, and cold air is generated by the air flow that exchanges heat with the cooler.

The cooler is arranged in a cooling chamber provided on the back side of the refrigerator 1. The cooling chamber is arranged between each storage space and the heat insulating box body 50. In addition to the cooler, the cooling chamber is equipped with a cooling fan and the like. Further, as shown in FIG. 1, the compressor 31 is arranged in a machine room 30 provided on the back side of the bottom of the refrigerator 1.

In the present embodiment, the control unit is realized as an external electrical unit 41, an internal electrical unit (not shown), and the like.

The external electrical equipment unit 41 is arranged on the upper surface portion 51a of the heat insulating box body 50. The external electrical equipment unit 41 is composed of a control board and controls each component. The external electrical unit 41 is connected to each component arranged outside the heat insulating box 50 such as the compressor 31 by wiring (also called a harness) 21 or the like. Further, the external electrical unit 41 is connected to the internal electrical unit by wiring 23.

The internal electrical equipment unit is arranged, for example, on the back surface of the refrigerator compartment 11. That is, the internal electrical equipment unit is arranged on the inner box 52 side of the heat insulating box body 50. The internal electrical unit is composed of a control board and controls each component. The internal electrical unit is connected to each component (cooler, cooling fan, various switches, etc.) arranged inside the heat insulating box 50. The internal electrical unit can be omitted. In that case, each component (cooler, cooling fan, various switches, etc.) arranged inside the heat insulating box 50 is connected to the external electrical unit 41 by wiring 23. It is connected.

The various wirings 21 and 23 are arranged inside the heat insulating box body 50. That is, the wirings 21 and 23 are embedded in the heat insulating layer 53 of the heat insulating box body 50. Wiring 21 and 23 connect between the external electrical unit 41, the internal electrical unit, and each component, respectively. Specifically, the wiring 21 electrically connects the external electrical equipment unit 41 and each electric component (for example, a compressor 31) in the machine room 30. The wiring 21 is also called a machine room wiring. Further, the wiring 23 is a wiring that electrically connects the external electrical equipment unit 41 and the internal electrical equipment unit. The wiring 23 is also called an internal wiring.

As shown in FIGS. 1 and 2, the wiring 21 is arranged inside the heat insulating box 50 so as to crawl on the back surface 51c (that is, the outer box 51 side) of the heat insulating box 50. Further, the wiring 23 is arranged on the inner box 52 side in the heat insulating box body 50. The details of the arrangement method of the wiring 21 (machine room wiring) will be described later.

(Explanation of heat insulating box)
Subsequently, a more specific configuration of the heat insulating box body 50 will be described with reference to FIGS. 1 to 4 and the like. FIG. 3 is a plan view showing the configuration of the back surface portion 51c of the outer box 51 constituting the heat insulating box body 50. FIG. 3 shows the inside of the back surface portion 51c (the side on which the heat insulating layer 53 is formed). FIG. 4 is a cross-sectional view showing the configuration of the BB line portion of the back surface portion 51c of the outer box 51 shown in FIG. As shown in FIG. 2, the heat insulating box body 50 mainly includes an outer box 51, an inner box 52, a heat insulating layer 53, and a vacuum heat insulating material (VIP) 54.

The outer box 51 forms the outer peripheral surface of the heat insulating box body 50. The outer box 51 also partially forms the outer shape of the refrigerator 1. The inner box 52 forms the inner peripheral surface of the heat insulating box body 50. Further, the inner box 52 partitions each storage space (for example, the refrigerating room 11). The inner box 52 is also called a hood liner.

A space for arranging the machine room 30 is formed on the back side of the bottom surface 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 due to the movement of the compressor 31.

The heat insulating layer 53 is mainly composed of a foamed heat insulating material. Specifically, the heat insulating layer 53 can be formed of hard urethane foam (also referred to as hard urethane foam) or the like. Rigid urethane foam is a uniform resin foam obtained by mixing a catalyst, a foaming agent, a foaming agent, etc. with two types of main raw materials and causing a foaming reaction and a resinification reaction at the same time.

Further, inside the heat insulating box 50, a vacuum heat insulating material 54 is included in addition to the heat insulating layer 53 made of the foam heat insulating material. The vacuum heat insulating material 54 is formed by covering a core material having fine voids such as glass wool or silica powder with an outer cover material (bag-like body, for example, a laminated film) having a gas barrier property, and sealing the inside of the outer cover material under reduced pressure. Will be done. The vacuum heat insulating material can realize a high heat insulating effect by keeping the internal space in a high vacuum and reducing the amount of heat transmitted through the gas phase as much as possible. The vacuum heat insulating material 54 is, for example, a flat plate-shaped member having a rectangular flat surface (see FIG. 3).

As shown in FIG. 2, the vacuum heat insulating material 54 is arranged on the back side of the heat insulating box body 50. That is, the vacuum heat insulating material 54 is attached to the back surface portion 51c of the outer box 51. Further, the machine room wiring 21 is sandwiched between the back surface portion 51c of the outer box 51 and the vacuum heat insulating material 54. In this way, the machine room wiring 21 is fixed to the outer box 51.

FIG. 10 shows a cross-sectional configuration of the heat insulating box 50 according to the modified example. As shown in FIG. 10, a plurality of wirings 21 may be provided. In this case, it is preferable that the plurality of wirings 21 are arranged side by side along the plane of the back surface portion 51c. As a result, the wiring 21 sandwiched between the back surface portion 51c and the flat plate-shaped vacuum heat insulating material 54 is prevented from significantly hindering the attachment of the vacuum heat insulating material 54 to the back surface portion 51c, and the vacuum heat insulating material 54 is attached. Can be done relatively easily. In addition, a plurality of wirings 23 (internal wiring) may be bundled in the same manner as the wirings 21.

The heat insulating box 50 having the above structure is manufactured as follows, for example. First, inside the inner box 52, a control board such as an internal electrical equipment unit, an internal wiring 23, and the like are attached at predetermined positions.

Further, the machine room wiring 21 or the like is attached to a predetermined position of the outer box 51. After that, the vacuum heat insulating material 54 is adhesively fixed to the outer box 51.

Specifically, as shown in FIG. 3, the machine room wiring 21 is laid from the upper end (upper surface portion 51a) side to the lower end (bottom surface portion 51b) of the back surface portion 51c of the outer box 51. A first connector 21a is attached to the upper end of the machine room wiring 21, and a second connector 21b is attached to the lower end. Both ends of the machine room wiring 21 including each of these connectors 21a and 21b protrude outward from the end of the back surface portion 51c.

With the machine room wiring 21 attached to the back surface 51c, the vacuum heat insulating material 54 is attached to the inner surface of the back surface 51c. At this time, with the machine room wiring 21 temporarily fixed to the back surface 51c, the vacuum heat insulating material 54 is attached to the back surface 51c using an adhesive, so that the machine room wiring 21 is embedded in the adhesive layer. It becomes. As a result, most of the machine room wiring 21 is fixed in a state of being covered with the vacuum heat insulating material 54. That is, as shown in FIG. 4, the machine room wiring 21 is sandwiched between the vacuum heat insulating material 54 and the back surface portion 51c of the outer box 51.

Then, the outer box 51 and the inner box 52 are assembled and fixed. As a result, the outer shape of the heat insulating box 50 is formed.

After that, with the back surface 51c of the heat insulating box 50 facing up, a liquid foam heat insulating material is injected from the injection ports 55 (see FIG. 3) formed near the left and right ends of the back surface 51c. To do. The material of the foamed heat insulating material is foamed in order from the front side to the back side in the space between the outer box 51 and the inner box 52, and is filled while increasing the volume. The foamed insulation then cures.

As a result, the inside of the heat insulating box 50 is filled with the foamed heat insulating material, and the heat insulating layer 53 is formed. The internal electrical unit and the internal wiring 23 are embedded in the foamed heat insulating material (hard urethane foam) while being attached to the wall surface of the inner box 52. Further, most of the machine room wiring 21 is sandwiched between the vacuum heat insulating material 54 and the back surface portion 51c of the outer box 51, and a part thereof (for example, the upper end portion and the lower end portion) is a foam heat insulating material (for example, the upper end portion and the lower end portion). It will be embedded inside the hard urethane foam). Further, the upper end of the machine room wiring 21 including the first connector 21a and the upper end of the internal wiring 23 are attachment portions of the external electrical unit 41 provided on the upper surface 51a of the outer box 51 from the heat insulating box body 50. It is in a state of popping out. Similarly, the lower end of the machine room wiring 21 including the second connector 21b is in a state of protruding from the heat insulating box 50 into the machine room 30.

After that, the external electrical unit 41 is attached to the upper surface 51a of the outer box 51, and the connector on the electrical unit side is connected to the first connector 21a of the machine room wiring 21. Further, the second connector 21b of the machine room wiring 21 is connected to the connector of each component (for example, the compressor 31) in the machine room 30.

The above-mentioned structure of the heat insulating box is an example of the present invention. Therefore, in the refrigerator according to one aspect of the present invention, the configuration of the heat insulating box is not limited to the above.

(Summary of the first embodiment)
As described above, the refrigerator 1 according to the present embodiment includes the heat insulating box body 50, the external electrical equipment unit 41, and the machine room 30. The heat insulating box body 50 has an outer box 51 and an inner box 52. Further, a heat insulating layer 53 is formed between the outer box 51 and the inner box 52. The heat insulating layer 53 is made of a foamed heat insulating material. Further, a vacuum heat insulating material 54 is provided between the outer box 51 and the inner box 52. The external electrical equipment unit 41 is arranged above the heat insulating box body 50 (that is, the upper surface portion 51a of the outer box 51). The machine room 30 is arranged below the heat insulating box 50 (that is, on the side opposite to the side where the external electrical unit 41 is arranged, specifically, the bottom surface 51b of the outer box 51), and is a machine such as a compressor 31. Contains parts. The external electrical equipment unit 41 and the compressor 31 may be arranged at positions upside down from those of the present embodiment.

Further, the refrigerator 1 has at least one wiring (machine room wiring) 21 connecting the external electrical equipment unit 41 and the machine parts. The wiring 21 is embedded in the heat insulating layer 53, and is sandwiched between the back surface portion 51c of the outer box 51 and the vacuum heat insulating material 54. In this way, the machine room wiring 21 is fixed to the outer box 51.

According to the above configuration, the wiring 21 connecting the external electrical unit 41 arranged on the upper surface portion 51a of the outer box 51 and the electric parts such as the compressor 31 arranged on the bottom surface portion 51b is connected to the outer box. By fixing to 51, the number of wires that may hinder the fluidity of the foam insulation material can be reduced. As a result, it is possible to suppress the generation of unfilled portions of the heat insulating material that may occur in the process of forming the foamed heat insulating material, and suppress the generation of voids (voids) in the heat insulating layer 53.

In particular, the wiring for connecting the external electrical equipment unit 41 arranged in the upper part of the heat insulating box 50 and the electric parts such as the compressor 31 in the machine room 30 arranged in the lower part of the heat insulating box 50 is inside. The necessity of arranging it on the box 52 side is low. Therefore, in the present embodiment, the machine room wiring 21 is arranged on the outer box 51 side. In the back surface portion 51c of the heat insulating box body 50, the foamed heat insulating material flows in order from the inner box 52 side, foams, and then flows to the outer box 51 side. Therefore, the possibility that the wiring arranged on the outer box 51 side hinders the fluidity of the foamed heat insulating material and the unfilled portion of the heat insulating material is generated is considerably higher than the possibility of the wiring arranged on the inner box 52 side. It gets lower. Therefore, by changing the arrangement position of the wiring in the heat insulating box 50 according to the application of the wiring, it is possible to minimize the decrease in the fluidity of the foamed heat insulating material due to the arrangement of the wiring in the heat insulating layer 53. Can be done.

Further, in the conventional technique, since all the wiring is arranged on the inner box 52 side, the machine room wiring 21 is once routed from the outer box 51 side to the inner box 52 side at the upper end of the heat insulating box body 50, and also. At the lower end of the heat insulating box 50, it was routed from the inner box 52 side to the outer box 51 side. In this configuration, there are at least one location above and below the location where the wiring straddles the outer box 51 and the inner box 52.

On the other hand, in the present embodiment, the machine room wiring 21 does not straddle the outer box 51 and the inner box 52, and the internal wiring 23 is only one place between the external electrical unit 41 and the inner box 52. The configuration is such that it straddles. Since a metal having high thermal conductivity such as a copper wire is usually used for the wiring, if there are many places where the wiring straddles the outer box 51 and the inner box 52, the heat insulating performance of the heat insulating box body deteriorates. On the other hand, in the present embodiment, the heat insulating performance of the heat insulating box body 50 can be maintained by reducing the wiring straddling the outer box 51 and the inner box 52.

Further, in the refrigerator 1 according to the present embodiment, the machine room wiring 21 is sandwiched between the back surface portion 51c of the outer box 51 and the vacuum heat insulating material 54. With such a configuration, it is possible to more effectively suppress the wiring from hindering the flow of the foamed heat insulating material, and to fix the machine room wiring 21 with the adhesive on the sticking surface of the vacuum heat insulating material 54.

Further, since the cold heat inside the refrigerator is blocked by the vacuum heat insulating material 54, it is possible to prevent the machine room wiring 21 from being cooled by the cold heat inside the refrigerator. Therefore, it is possible to prevent the cold heat from being transmitted through the machine room wiring 21 and leaking to the control board of the electric component or the electrical unit arranged outside the refrigerator, and reduce the possibility of dew condensation on the component or the control board outside the refrigerator. it can.

<Second embodiment>
Subsequently, a second embodiment of the present invention will be described. In the second embodiment, a configuration example in which the machine room wiring is divided into a wiring for high-voltage AC and a wiring for low-voltage DC will be described. The same configuration as in the first embodiment can be applied except for the arrangement of the machine room wiring on the back surface of the outer box. Therefore, in the second embodiment, the configuration of the back surface portion of the outer box will be mainly described.

FIG. 5 is a plan view showing the configuration of the back surface portion 51c of the outer box 51 constituting the heat insulating box body 50 of the refrigerator 1 according to the present embodiment. Similar to the first embodiment, the heat insulating box body 50 mainly includes an outer box 51, an inner box 52, a heat insulating layer 53, and a vacuum heat insulating material (VIP) 54. The same configuration as in the first embodiment can be applied to each of these constituent members.

In the present embodiment, the wiring passing through the inside of the heat insulating box 50 is the first machine room wiring (wiring for high voltage AC) 21, the second machine room wiring 22 (wiring for low voltage DC) 22, and the inside of the refrigerator. It is composed of three types of wiring 23. The internal wiring 23 is arranged on the inner box side in the heat insulating box 50 as in the first embodiment.

Similar to the wiring 21 of the first embodiment, the first machine room wiring 21 electrically connects the external electrical equipment unit 41 and each electric component (for example, a compressor 31) in the machine room 30. The first machine room wiring 21 is mainly used for driving the main power supply and each electric component such as the compressor 31 and the inverter. In other words, the first machine room wiring 21 is wiring for supplying high-voltage alternating current electricity.

The first connector 21a provided at the upper end of the first machine room wiring 21 is connected to the connector on the external electrical equipment unit 41 side. The second connector 21b provided at the lower end of the first machine room wiring 21 is connected to the connector of each component (for example, the compressor 31) in the machine room 30.

The second machine room wiring 22 is arranged substantially parallel to the first machine room wiring 21. The second machine room wiring 22 electrically connects the external electrical equipment unit 41 and each electric component (for example, a compressor 31) in the machine room 30. The second machine room wiring 22 is wiring used for transmitting an electric signal to various devices (for example, a condenser fan, a refrigerant switching valve, etc.) arranged in the machine room 30. In other words, the second machine room wiring 22 is wiring for supplying low-voltage direct current electricity.

The first connector 22a provided at the upper end of the second machine room wiring 22 is connected to the connector on the external electrical unit 41 side. The second connector 22b provided at the lower end of the second machine room wiring 22 is connected to the connector of each component (for example, the compressor 31) in the machine room 30.

As described above, in the present embodiment, the machine room wiring is divided into the first machine room wiring 21 and the second machine room wiring 22 according to the type of the electric signal to be transmitted. Then, as shown in FIG. 5, the first machine room wiring 21 and the second machine room wiring 22 are arranged on the back surface portion 51c of the outer box 51 in a state of being separated from each other. As a result, it is possible to reduce the generation of noise that may occur between the first machine room wiring 21 and the second machine room wiring 22.

The first machine room wiring 21 may be configured by bundling a plurality of wirings, for example, as in the wiring 21 shown in FIG. Similarly, the second machine room wiring 22 may be configured by bundling a plurality of wirings.

<Third embodiment>
Subsequently, a third embodiment of the present invention will be described. In the third embodiment, a configuration example in which the heat radiating pipe is attached to the back surface of the outer box will be described. The same configuration as in the first embodiment can be applied to the configuration other than the back surface portion of the outer box. Therefore, in the third embodiment, the configuration of the back surface portion of the outer box will be mainly described.

FIG. 6 is a plan view showing the configuration of the back surface portion 151c of the outer box 151 constituting the heat insulating box body 50 of the refrigerator 1 according to the present embodiment. FIG. 6 shows the inside of the back surface portion 151c. Similar to the first embodiment, the heat insulating box body 50 mainly includes an outer box 151, an inner box 52, a heat insulating layer 53, and a vacuum heat insulating material (VIP) 54. The same configuration as in the first embodiment can be applied to the inner box 52 and the heat insulating layer 53.

As shown in FIG. 6, a vacuum heat insulating material (VIP) 54 is attached to the back surface portion 151c. Insulation ports 55 for heat insulating materials are formed near the left and right ends of the back surface portion 151c. These configurations are the same as in the first embodiment.

Further, a heat radiating pipe 171 extends from the outer periphery of the vacuum heat insulating material 54 (specifically, the upper end portion and the left and right end portions). The refrigerant warmed in the refrigeration cycle flows through the heat radiating pipe 171. By providing such a heat radiating pipe 171, it is possible to suppress the occurrence of dew condensation on the surface of the heat insulating box body 50.

The heat radiating pipe 171 is fixed to the back surface portion 151c by sheet-shaped adhesive tapes (sealing members) 161 and 162. Specifically, a part 171a of the heat radiating pipe 171 extending along the upper end of the back surface portion 151c is fixed by a relatively wide adhesive tape 161. Further, a part 171b of the heat radiating pipe 171 extending along the left and right ends of the back surface portion 151c is fixed by a relatively narrow adhesive tape 162.

The machine room wiring 21 is sandwiched between the back surface portion 151c of the outer box 51 and the vacuum heat insulating material 54. In the present embodiment, the upper portion of the machine room wiring 21 is fixed together with the heat radiating pipe 171 by the adhesive tape 161.

FIG. 7 shows the cross-sectional configuration of the CC line portion of the back surface portion 151c shown in FIG. The adhesive tape 161 is attached along the upper end of the back surface portion 151c. One end portion 161a (lower end portion) in the width direction of the adhesive tape 161 is sandwiched between the vacuum heat insulating material 54 and the back surface portion 151c, and extends below the upper end portion of the vacuum heat insulating material 54. Has reached. Further, the other end portion 161b (upper end portion) of the adhesive tape 161 in the width direction reaches the upper end portion (upper surface portion 51a side) of the back surface portion 151c.

With such a configuration, a slight gap is formed between the adhesive tape 161 fixing the machine room wiring 21 and the back surface portion 151c. This gap is formed between the upper end portion and the back surface portion 151c of the vacuum heat insulating material 54 by sandwiching the end portion 161a of the adhesive tape 161 between the upper end portion and the back surface portion 151c of the vacuum heat insulating material 54. Communicate with space. Further, since the end portion 161b of the adhesive tape 161 reaches the end portion on the upper side (upper surface portion 51a side) of the back surface portion 151c, the space between the upper end portion and the back surface portion 151c of the vacuum heat insulating material 54 is created. Communicate with the outside air.

As a result, even when the foamed gas generated from the foamed heat insulating material invades between the vacuum heat insulating material 54 and the back surface portion 151c in the manufacturing process of the heat insulating box body 50 or the like, the foamed gas does not accumulate and is quickly exposed to the outside air. Since it can be discharged, the back surface portion 251c is less likely to be deformed.

In this embodiment, a refrigerator in which the heat radiating pipe 171 is attached to the back surface portion 151c of the outer box 151 has been described as an example. However, even in the case where the heat radiating pipe is not provided on the back surface of the refrigerator as in the first embodiment, the machine room wiring 21 may be fixed by using the adhesive tape 161. Even in the case where the heat radiating pipe is not provided, as in the present embodiment, one end 161a in the width direction of the adhesive tape 161 fixing the machine room wiring 21 is the vacuum heat insulating material 54. It is preferably sandwiched between the back surface portion 151c and reaches below the upper end portion of the vacuum heat insulating material 54. Further, it is preferable that the other end portion 161b of the adhesive tape 161 in the width direction reaches the end portion on the upper side (upper surface portion 51a side) of the back surface portion 151c. As a result, the space between the vacuum heat insulating material 54 and the back surface portion 151c communicates with the outside air. In this case, the adhesive tape 161 may have a left-right width enough to cover the machine room wiring 21.

<Fourth Embodiment>
Subsequently, a fourth embodiment of the present invention will be described. In the fourth embodiment, another configuration example in which the heat radiating pipe is attached to the back surface of the outer box will be described. The same configuration as in the first embodiment can be applied to the configuration other than the back surface portion of the outer box. Therefore, in the fourth embodiment, the configuration of the back surface portion of the outer box will be mainly described.

FIG. 8 is a plan view showing the configuration of the back surface portion 251c of the outer box 251 constituting the heat insulating box body 50 of the refrigerator 1 according to the present embodiment. FIG. 8 shows the inside of the back surface portion 251c. Similar to the first embodiment, the heat insulating box body 50 mainly includes an outer box 251, an inner box 52, a heat insulating layer 53, and a vacuum heat insulating material (VIP) 54. The same configuration as in the first embodiment can be applied to the inner box 52 and the heat insulating layer 53.

As shown in FIG. 8, a vacuum heat insulating material (VIP) 54 is attached to the back surface portion 251c. Insulation ports 55 for heat insulating materials are formed near the left and right ends of the back surface portion 251c. These configurations are the same as in the first embodiment.

Further, on the lower side of the vacuum heat insulating material 54, a heat radiating pipe 271 extends along the lower end portion of the vacuum heat insulating material 54. The heat radiating pipe 271 is fixed to the back surface portion 251c by sheet-shaped adhesive tapes (sealing members) 261 and 262. Specifically, a part 271a of the heat radiation pipe 271 extending along the lower end of the back surface portion 251c is fixed by the adhesive tape 261. Further, other portions of the heat radiating pipe 271 extending along the left and right ends of the back surface portion 251c are fixed by the adhesive tape 262.

In the configuration according to the present embodiment, the heat radiating pipe 271 is arranged only in the lower portion of the back surface portion 251c, and is not arranged at the left and right side ends of the back surface portion 251c. As a result, the vacuum heat insulating material 54 can be expanded and arranged on both the left and right sides as compared with the configuration of the third embodiment. Therefore, the surface area of the vacuum heat insulating material 54 is increased, and the heat insulating performance of the refrigerator 1 can be further improved.

Further, in the back surface portion 251c according to the present embodiment, as in the second embodiment, the machine room wiring is the first machine room wiring (wiring for high pressure AC) 21 and the second machine room wiring 22 (for low pressure DC). (Wire) 22 and fixed to the back surface portion 251c, respectively.

The first machine room wiring 21 and the second machine room wiring 22 are sandwiched between the back surface portion 251c of the outer box 51 and the vacuum heat insulating material 54. In the present embodiment, the lower portion of the first machine room wiring 21 and the second machine room wiring 22 is fixed together with the heat radiating pipe 271 by the adhesive tapes 261 and 262.

Specifically, the lower side of the first machine room wiring 21 is bent (21c) below the vacuum heat insulating material 54 and once extends in the lateral direction (left direction). Then, the first machine room wiring 21 extending in the lateral direction is bent again in the vicinity of the bent portion of the heat radiation pipe 271, extends in the vertical direction (downward direction), and protrudes from the back surface portion 251c.

Further, the lower side of the second machine room wiring 22 is bent (22c) below the vacuum heat insulating material 54 and once extends in the lateral direction (right direction). Then, the second machine room wiring 22 extending in the lateral direction is bent again in the vicinity of the bent portion of the heat radiation pipe 271, extends in the vertical direction (downward direction), and protrudes from the back surface portion 251c.

A part of the first machine room wiring 21 and the second machine room wiring 22 extending laterally along the lower end of the vacuum heat insulating material 54 is fixed by the adhesive tape 261. A part of the first machine room wiring 21 and the second machine room wiring 22 extending in the vertical direction at the left and right end portions of the back surface portion 251c is fixed by the adhesive tape 262.

FIG. 9 shows the cross-sectional configuration of the DD line portion of the back surface portion 251c shown in FIG. The adhesive tape 261 extends laterally along the lower end of the back surface 151c. One end 261a (upper end) of the adhesive tape 261 in the width direction is sandwiched between the vacuum heat insulating material 54 and the back surface 251c.

Further, the adhesive tape 262 extends in the vertical direction at the left and right side ends of the back surface portion 251c. Each adhesive tape 262 partially overlaps the left and right end portions of the adhesive tape 261. One end portion 262a (upper end portion) of the adhesive tape 262 is sandwiched between the vacuum heat insulating material 54 and the back surface portion 251c. Further, the other end portion 262b (lower end portion) of the adhesive tape 262 reaches the lower end portion (bottom surface portion 51b side) of the back surface portion 251c.

With such a configuration, a slight gap is formed between the adhesive tapes 261 and 262 fixing the first machine room wiring 21 and the second machine room wiring 22 and the back surface portion 151c. This gap is formed between the upper end portion of the vacuum heat insulating material 54 and the back surface portion 251c by sandwiching the end portion 261a of the adhesive tape 261 between the upper end portion and the back surface portion 251c of the vacuum heat insulating material 54. Communicate with space. Further, since the end portion 262b of the adhesive tape 262 reaches the end portion on the lower side (bottom surface portion 51b side) of the back surface portion 251c, the space between the lower end portion and the back surface portion 251c of the vacuum heat insulating material 54 is created. Communicate with the outside air.

As a result, deformation of the back surface portion 251c that may occur when the vacuum heat insulating material 54 shrinks or the like occurs in the manufacturing process of the heat insulating box 50 is less likely to occur.

In this embodiment, a refrigerator in which the heat radiating pipe 271 is attached to the back surface portion 251c of the outer box 251 has been described as an example. However, even in the case where the heat radiating pipe is not provided on the back surface of the refrigerator as in the first embodiment, the first machine room wiring 21 and the first machine room wiring 21 and 262 are used by the above-mentioned method. The second machine room wiring 22 may be fixed to the back surface portion 251c.

<Fifth Embodiment>
Subsequently, a fifth embodiment of the present invention will be described. In the fifth embodiment, a configuration example of a refrigerator not provided with the vacuum heat insulating material will be described. For other configurations, the same configuration as in the first embodiment can be applied. Therefore, in the fifth embodiment, a configuration different from that of the first embodiment will be mainly described.

FIG. 11 shows the configuration of the cross section of the heat insulating box 350 of the refrigerator 1 according to the present embodiment. The heat insulating box body 350 mainly includes an outer box 51, an inner box 52, and a heat insulating layer 53. The outer box 51, the inner box 52, and the heat insulating layer 53 have the same configuration as that of the first embodiment.

Various wirings 21 and 23 are arranged in the heat insulating layer 53. The wiring 21 electrically connects the external electrical equipment unit 41 and each electric component (for example, a compressor 31) in the machine room 30. The wiring 21 is also called a machine room wiring. Further, the wiring 23 is a wiring that electrically connects the external electrical equipment unit 41 and the internal electrical equipment unit. The wiring 23 is also called an internal wiring.

The wiring 21 is arranged inside the heat insulating box 350 so as to crawl on the back surface 51c (that is, the outer box 51 side) of the heat insulating box 50. In the present embodiment, since the vacuum heat insulating material is not provided, the wiring 21 is fixed to the inside of the back surface portion 51c by, for example, an adhesive tape.

According to the above configuration, the wiring 21 connecting the external electrical unit 41 arranged on the upper surface portion 51a of the outer box 51 and the electric parts such as the compressor 31 arranged on the bottom surface portion 51b is connected to the outer box. By fixing to 51, as in the first embodiment, the number of wires that may hinder the fluidity of the foam insulating material can be reduced. As a result, it is possible to suppress the generation of unfilled portions of the heat insulating material that may occur in the process of forming the foamed heat insulating material, and suppress the generation of voids (voids) in the heat insulating layer 53. Further, by reducing the wiring straddling the outer box 51 and the inner box 52, the heat insulating performance of the heat insulating box body 50 can be maintained.

FIG. 12 shows a cross-sectional configuration of the heat insulating box body 350 ′ according to the modified example. As shown in FIG. 12, a plurality of wirings 21 may be provided. In this case, it is preferable that the plurality of wirings 21 are arranged side by side along the plane of the back surface portion 51c. As a result, when a plurality of wirings 21 are arranged inside the heat insulating box, it is possible to prevent each wiring from hindering the fluidity of the foamed heat insulating material in the process of forming the heat insulating layer 53.

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 to include all modifications within the meaning and scope equivalent to the scope of claims. 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 21: Machine room wiring, first machine room wiring (wiring, wiring for high-voltage AC)
22: Wiring in the second machine room (wiring, wiring for low-voltage DC)
23: Wiring in the refrigerator 30: Machine room 31: Compressor (electric parts)
41: External electrical unit (electrical unit)
50: Insulation box body 51: Outer box 51c: Back surface 52 (of outer box): Inner box 53: Insulation layer 54: Vacuum heat insulating material 151: Outer box 161: Adhesive tape (seal member)
161a: (Adhesive tape) end 161b: (Adhesive tape) end 171: Heat dissipation pipe 251: Outer box 261: Adhesive tape (seal member)
261a: End (of adhesive tape) 262: Adhesive tape (seal member)
262b: End 350 (of adhesive tape): Insulated box 350': Insulated box

Claims (6)

Insulated box body with outer box and inner box,
An electrical unit arranged in either the upper part or the lower part of the heat insulating box, and
A machine room located on the other of the upper and lower parts of the heat insulating box and accommodating electric parts, and
It is provided with at least one wiring connecting the electrical unit and the electric component.
The wiring is fixed to the outer box, the refrigerator. The heat insulating box has a vacuum heat insulating material.
The refrigerator according to claim 1, wherein the wiring is arranged between the vacuum heat insulating material and the outer box. Further having a sealing member for fixing the wiring to the outer box,
One end of the sealing member is sandwiched between the vacuum heat insulating material and the outer box.
The other end of the sealing member extends to at least one of the upper and lower ends of the insulating box.
The refrigerator according to claim 2. The heat insulating box has a heat radiating pipe and has a heat radiating pipe.
The heat radiating pipe is fixed by the sealing member.
The refrigerator according to claim 3. Has multiple wires,
The wiring is classified into high-voltage AC wiring and low-voltage DC wiring.
The refrigerator according to any one of claims 1 to 4, wherein the wiring for high-voltage alternating current and the wiring for low-voltage direct current are arranged apart from each other. The refrigerator according to any one of claims 1 to 5, wherein the plurality of wirings are arranged side by side along the plane of the outer box.

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