WO2020003587A1

WO2020003587A1 - Refrigerator

Info

Publication number: WO2020003587A1
Application number: PCT/JP2019/005831
Authority: WO
Inventors: 翔櫻澤
Original assignee: シャープ株式会社
Priority date: 2018-06-25
Filing date: 2019-02-18
Publication date: 2020-01-02
Also published as: TWI727348B; TW202001169A; JPWO2020003587A1; JP7228589B2

Abstract

A refrigerator (1) has a heat insulating box (50), an electrical component unit (41) outside the refrigerator, and a machine compartment (30). The heat insulating box (50) has an outer box (51) and an inner box (52). The electrical component unit (41) outside the refrigerator is disposed on the upper part or the lower part of the heat insulating box (50). The machine compartment (30) is disposed on the other of the upper part and the lower part of the heat insulating box (50)(, that is, on the side opposite the side where the electrical component unit (41) outside the refrigerator is disposed), and holds a machine component such as a compressor (31). The refrigerator (1) has at least one wiring (machine compartment wiring)(21) which connects the electrical component unit (41) outside the refrigerator and the machine component. The wiring (21) is affixed to the outer box (51).

Description

refrigerator

The present disclosure relates to a refrigerator including a heat insulating box.

Generally, a refrigerator is provided with a heat insulating box so as to cover the outer periphery of the storage space in order to insulate the surroundings. The heat insulating box 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 foam heat insulating material such as a hard urethane foam heat insulating material is used.

In addition to the heat insulating material, there are electric wiring and the like that connect various electronic components such as a control board, a switch, and a motor provided in the refrigerator inside the heat insulating box. Such electric wiring exists so as to be embedded in the heat insulating material.

For example, Patent Literature 1 discloses a refrigerator in which an electric lead wire 22 extending from an electrical unit 21 arranged on a top surface 20 of a refrigerator main body is wired along the back surface of the inner box 3 of the refrigerator main body. In this refrigerator, the electric lead wires 22 are fixed to the back surface of the inner box through a plurality of spacer members 23 made of a heat insulating material, and a foam insulating material is provided between the electric lead wires 22 between the spacer members 23 and the inner box. 4 is formed by filling and foaming.

JP 2016-44907 A

配線 In the conventional refrigerator like the refrigerator of Patent Literature 1, the wiring passing through the heat insulating box is disposed on the inner box side.

By the way, when injecting the foamed heat insulating material into the heat insulating box body, the outer box is placed on the upper side and the inner box is placed on the lower side, and the heat is insulated from the opening (injection port) formed on the back portion of the outer box. The material is dropped. The foam heat insulating material injected into the heat insulating box first starts foaming from the inner box side located below and expands toward the outer box side. However, if the wiring is laid in the heat insulating box, the formation of the foamed heat insulating material may be hindered by the wiring 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, voids or the like not filled with the foamed heat insulating material exist in the heat insulating box, and the heat insulating performance may be reduced. 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 that can further improve the heat insulating performance of a heat insulating box.

A refrigerator according to one aspect of the present invention includes an insulating box having an outer box and an inner box, an electrical unit disposed at one of an upper portion and a lower portion of the insulating box, and the insulating box. And a machine room that accommodates an electric component and that is connected to the electric component unit and the electric component. And the said wiring is being fixed to the said outer box.

において In the refrigerator according to one aspect of the present invention, the heat insulating box may include a vacuum heat insulating material, and the wiring may be disposed 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 seal member for fixing the wiring to the outer box, and one end of the seal member is provided between the vacuum heat insulating material and the outer box. The other end of the sealing member may be sandwiched and extend to at least one of the upper and lower ends of the heat insulating box.

において In the refrigerator according to one aspect of the present invention, the heat insulating box may include a heat radiating pipe, and the heat radiating pipe may be fixed by the seal member.

The refrigerator according to one aspect of the present invention includes a plurality of wires, and the wires are classified into a high-voltage AC wire and a low-voltage DC wire, and the high-voltage AC wire, 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 along a plane of the outer box.

According to the refrigerator in accordance with 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 reduced. The heat insulation performance of the heat insulation box can be further improved.

It is a side sectional view showing the internal composition of the refrigerator concerning one embodiment of the present invention. FIG. 2 is a schematic cross-sectional view illustrating an internal configuration of a heat insulating box of the refrigerator illustrated in FIG. 1. It is a top view showing composition of the back part inside the heat insulation box of the refrigerator concerning a 1st embodiment. FIG. 4 is a cross-sectional view illustrating a configuration of a BB line portion of the heat insulating box illustrated in FIG. 3. It is a top view showing composition of the back part inside the heat insulation box of the refrigerator concerning a 2nd embodiment. It is a top view showing composition of the back part inside the heat insulation box of the refrigerator concerning a 3rd embodiment. FIG. 7 is a cross-sectional view showing a configuration of a line CC of the heat insulating box shown in FIG. 6. It is a top view showing composition of the back part inside the heat insulation box of the refrigerator concerning a 4th embodiment. FIG. 9 is a cross-sectional view illustrating a configuration of a DD line portion of the heat-insulating box illustrated in FIG. 8. It is a cross section showing the internal structure of the heat insulation box of the refrigerator concerning the modification of a 1st embodiment. It is a cross section showing the internal structure of the heat insulation box of the refrigerator concerning a 5th embodiment. It is a cross-sectional schematic diagram which shows the internal structure of the heat insulation box of the refrigerator concerning 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 components are denoted by the same reference numerals. Their names and functions are the same. Therefore, detailed description thereof will not be repeated.

<First embodiment>
In the present embodiment, a heat insulating box provided in a refrigerator will be described as an example of a heat insulating structure of the present invention. 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 cross-sectional view illustrating the overall configuration of a refrigerator 1 according to the present embodiment. FIG. 2 shows a cross-sectional configuration of the heat-insulating box 50 constituting the refrigerator 1. FIG. 2 corresponds to a cross section taken along line AA of FIG.

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

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

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 50 is provided so as to cover the outer periphery of the refrigerator 1. The heat insulating box 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).

外 In this 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 rear surface portion 51c, and a side surface portion 51d, respectively, along with the names of the respective surfaces of the refrigerator 1.

冷凍 A refrigerator cycle is provided inside the refrigerator 1. In the refrigeration cycle, a compressor 31, a condenser (not shown), an expander (not shown), a cooler (not shown), and the like are provided through a refrigerant pipe (a refrigerant flow path) through which the refrigerant flows. Connected and configured.

制御 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 through the cycle. The high-temperature and high-pressure refrigerant compressed by the compressor 31 is condensed while radiating heat in the condenser. Subsequently, the high-temperature refrigerant expands in the expander to a low temperature and low pressure, and is sent to a cooler as an evaporator. The refrigerant flowing into the cooler undergoes heat exchange with cold air flowing in the cooling chamber, evaporates while absorbing heat, and is sent to the compressor 31 as a low-temperature gas refrigerant. In this way, the refrigerant circulates to operate the refrigeration cycle, and cool air is generated by the airflow that has exchanged heat with the cooler.

The cooler is arranged in a cooling room provided on the back side of the refrigerator 1. The cooling chamber is disposed between each storage space and the heat insulating box 50. In the cooling chamber, a cooling fan and the like are provided in addition to the cooler. Further, as shown in FIG. 1, the compressor 31 is disposed 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 and an internal electrical unit (not shown).

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

電 The electrical unit in the refrigerator is disposed, for example, on the back of the refrigerator compartment 11. That is, the electrical unit in the refrigerator is disposed on the inner box 52 side of the heat insulating box 50. The in-compartment electrical unit is constituted by a control board, and controls each component. The in-compartment 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 this case, each component (cooler, cooling fan, various switches, etc.) arranged inside the heat insulating box 50 is connected to the external electrical unit 41 via the wiring 23. It is connected.

The

various wirings

21 and 23 are arranged inside the heat insulation box 50. That is, the

wirings

21 and 23 are embedded in the heat insulating layer 53 of the heat insulating box 50. The

wirings

21 and 23 connect the external electrical unit 41, the internal electrical unit, and the respective components. Specifically, the wiring 21 electrically connects the external electrical unit 41 and each electric component (for example, the compressor 31) in the machine room 30. The wiring 21 is also called a machine room wiring. The wiring 23 is a wiring for electrically connecting the external electrical unit 41 and the internal electrical unit. The wiring 23 is also called an internal wiring.

As shown in FIGS. 1 and 2, the wiring 21 is disposed inside the heat-insulating box 50 so as to crawl on the rear surface 51 c of the heat-insulating box 50 (that is, the outer box 51 side). The wiring 23 is disposed on the inner box 52 side in the heat insulating box 50. Details of the method of arranging the wiring 21 (machine room wiring) will be described later.

(Explanation of heat insulation box)
Subsequently, a more specific configuration of the heat insulating box 50 will be described with reference to FIGS. FIG. 3 is a plan view showing the configuration of the back surface 51c of the outer box 51 constituting the heat insulating box 50. FIG. 3 shows the inside (the side on which the heat insulating layer 53 is formed) of the back surface portion 51c. FIG. 4 is a cross-sectional view showing the configuration of the back part 51c of the outer case 51 shown in FIG. As shown in FIG. 2, the heat insulating box 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 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 50. The inner box 52 partitions each storage space (for example, the refrigerator compartment 11). The inner box 52 is also called a food liner.

空間 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 disposed outside the heat insulating box 50. This is because the temperature inside the machine room 30 increases when the compressor 31 moves.

The heat insulating layer 53 is mainly made of a foamed heat insulating material. Specifically, the heat insulating layer 53 can be formed of rigid urethane foam (also referred to as rigid urethane foam). Hard urethane foam is a uniform resin foam obtained by mixing a catalyst, a foaming agent, a foaming agent, and the like with two types of main raw materials and simultaneously causing a foaming reaction and a resinification reaction.

{Circle around (5)} In addition to the heat insulating layer 53 made of a foamed heat insulating material, the inside of the heat insulating box 50 contains a vacuum heat insulating material 54. 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 material having a gas barrier property (a bag-like body, for example, a laminated film), and sealing the inside of the outer material under reduced pressure. Is done. The vacuum heat insulating material can realize a high heat insulating effect by keeping the internal space at a high vacuum and minimizing the amount of heat transmitted through the gas phase. The vacuum heat insulating material 54 is, for example, a plate-like member having a rectangular plane (see FIG. 3).

真空 As shown in FIG. 2, the vacuum heat insulating material 54 is disposed on the back side of the heat insulating box 50. That is, the vacuum heat insulating material 54 is attached to the back surface 51 c of the outer box 51. The machine room wiring 21 is sandwiched between the back surface 51 c of the outer box 51 and the vacuum heat insulating material 54. Thus, the machine room wiring 21 is fixed to the outer box 51.

FIG. 10 shows a cross-sectional configuration of a heat-insulating box 50 according to a modification. 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 51c. Accordingly, the wiring 21 sandwiched between the back surface 51c and the flat-plate-shaped vacuum heat insulating material 54 is prevented from greatly hindering the attachment of the vacuum heat insulating material 54 to the back surface 51c. Can be performed relatively easily. Note that a plurality of wires 23 (in-compartment wires) may be bundled similarly to the wires 21.

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

機械 Attach the machine room wiring 21 and the like to a predetermined position of the outer box 51. Thereafter, the vacuum heat insulating material 54 is bonded and 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 51a) side of the rear surface 51c of the outer box 51 to the lower end (bottom surface 51b). The machine room wiring 21 has a first connector 21a attached to an upper end thereof, and a second connector 21b attached to a lower end thereof. Both ends of the machine room wiring 21 including these

connectors

21a and 21b protrude outward from the end of the back surface 51c.

(4) With the machine room wiring 21 attached to the rear portion 51c, the vacuum heat insulating material 54 is attached to the inner surface of the rear portion 51c. At this time, in a state where the machine room wiring 21 is temporarily fixed to the rear portion 51c, the vacuum heat insulating material 54 is attached to the rear portion 51c using an adhesive, so that the machine room wiring 21 is embedded in the adhesive layer. It becomes. Thereby, most of the machine room wiring 21 is fixed while 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 51 c of the outer box 51.

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

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

Thereby, 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 in-compartment electrical unit and the in-compartment wiring 23 are embedded in the foam insulation (hard urethane foam) while being attached to the wall surface of the inner box 52. Most of the machine room wiring 21 is sandwiched between the vacuum heat insulating material 54 and the rear surface 51c of the outer box 51, and a part (for example, an upper end and a lower end) of the foamed heat insulating material ( (Hard urethane foam). Further, the upper end of the machine room wiring 21 including the first connector 21a and the upper end of the in-compartment wiring 23 are provided on the upper part 51a of the outer box 51 from the heat-insulating box 50, to which the external electrical unit 41 is attached. It is in a state of jumping out. Similarly, the lower end of the machine room wiring 21 including the second connector 21 b is in a state of protruding from the heat insulating box 50 into the machine room 30.

Then, 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 a connector of each component (for example, the compressor 31) in the machine room 30.

The configuration of the heat insulating box described above is an example of the present invention. Therefore, in the refrigerator according to one embodiment of the present invention, the configuration of the heat insulating box is not limited to the above.

(Summary of First Embodiment)
As described above, the refrigerator 1 according to the present embodiment includes the heat-insulating box 50, the external electrical unit 41, and the machine room 30. The heat insulation box 50 has an outer box 51 and an inner box 52. Further, between the outer case 51 and the inner case 52, a heat insulating layer 53 is formed. The heat insulating layer 53 is formed of a foamed heat insulating material. Further, a vacuum heat insulating material 54 is provided between the outer case 51 and the inner case 52. The external electrical unit 41 is disposed above the heat-insulating box 50 (ie, the upper surface 51a of the outer box 51). The machine room 30 is disposed below the heat-insulating box 50 (that is, on the side opposite to the side where the external electrical unit 41 is disposed, specifically, the bottom surface 51b of the outer box 51). Contains parts. Note that the external electrical unit 41 and the compressor 31 may be arranged at positions that are upside down with respect to the present embodiment.

冷蔵庫 Refrigerator 1 also has at least one wiring (machine room wiring) 21 connecting external electrical unit 41 and mechanical parts. The wiring 21 is embedded in the heat insulating layer 53 and is sandwiched between the back surface 51 c of the outer box 51 and the vacuum heat insulating material 54. Thus, 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 51a of the outer case 51 and the electric component such as the compressor 31 arranged on the bottom surface 51b is connected to the outer case. By fixing to 51, the number of wirings that may hinder the fluidity of the foamed heat insulating material can be reduced. Accordingly, it is possible to suppress the generation of the unfilled portion of the heat insulating material which may occur in the process of forming the foamed heat insulating material, and to suppress the generation of the void (void) in the heat insulating layer 53.

In particular, regarding the wiring connecting the external electrical unit 41 arranged at the upper part of the heat insulating box 50 and the electric parts such as the compressor 31 in the machine room 30 arranged at the lower part of the heat insulating box 50, The necessity of arranging it on the box 52 side is low. For this reason, in the present embodiment, the machine room wiring 21 is arranged on the outer case 51 side. In the back part 51c of the heat insulating box 50, the foamed heat insulating material flows and foams sequentially from the inner box 52 side, and then flows to the outer box 51 side. Therefore, the possibility that the wiring arranged on the outer box 51 side impedes the flowability of the foamed heat insulating material to generate an unfilled portion of the heat insulating material is considerably larger than the possibility of the wiring arranged on the inner box 52 side. 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.

Further, in the related art, since all the wirings are 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 50, and At the lower end of the heat insulating box 50, the wire was routed from the inner box 52 side to the outer box 51 side. In this configuration, there is at least one location where the wiring straddles the outer case 51 and the inner case 52 at each of the upper and lower sides.

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 inner wiring 23 is provided only at one place between the outer electric unit 41 and the inner box 52. It becomes the structure which straddles with. Usually, a metal having high thermal conductivity such as a copper wire is used for the wiring. Therefore, 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 is reduced. On the other hand, in the present embodiment, the heat insulation performance of the heat insulating box body 50 can be maintained by reducing the number of wirings straddling the outer box 51 and the inner box 52.

In addition, in the refrigerator 1 according to the present embodiment, the machine room wiring 21 is sandwiched between the back part 51 c of the outer box 51 and the vacuum heat insulating material 54. With such a configuration, it is possible to more effectively prevent 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 surface to which the vacuum heat insulating material 54 is attached.

ため Further, since the cold heat inside the refrigerator is cut off by the vacuum heat insulating material 54, the cooling of the machine room wiring 21 by the cold heat inside the refrigerator is suppressed. Therefore, it is possible to suppress the transmission of cold heat to the machine room wiring 21 and to leak to the control parts of the electric components and the electrical components arranged outside the refrigerator and to reduce the possibility of dew condensation on the components and control boards 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 high-voltage AC wiring and a low-voltage DC wiring will be described. Except for the arrangement of the machine room wiring on the rear part of the outer box, the same configuration as that of the first embodiment can be applied. Therefore, in the second embodiment, a description will be given mainly of the configuration of the rear portion of the outer box.

FIG. 5 is a plan view showing the configuration of the back part 51c of the outer box 51 constituting the heat insulating box 50 of the refrigerator 1 according to the present embodiment. As in the first embodiment, the heat insulating box 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 components.

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

The first machine room wiring 21 electrically connects the outside electrical unit 41 and each electric component (for example, the compressor 31) in the machine room 30 similarly to the wiring 21 of the first embodiment. The first machine room wiring 21 is a wiring mainly used for driving a 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 a wiring for supplying high-voltage AC electricity.

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

２The 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 unit 41 and each electric component (for example, the compressor 31) in the machine room 30. The second machine room wiring 22 is a wiring used for transmitting an electric signal to various devices (for example, a condenser fan, a refrigerant switching valve, and the like) arranged in the machine room 30. In other words, the second machine room wiring 22 is a wiring for supplying low-voltage DC electricity.

１ The first connector 22a provided at the upper end of the second machine room wiring 22 is connected to the connector on the outside electrical unit 41 side. The second connector 22b provided at the lower end of the second machine room wiring 22 is connected to a 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 51 c of the outer box 51 in a state where they are separated from each other. Thereby, 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, like 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 description will be given of a configuration example in which a heat dissipation pipe is attached to a back surface of an outer box. In addition, about the structure other than the back part of an outer case, the structure similar to 1st Embodiment can be applied. Therefore, in the third embodiment, the configuration of the rear part of the outer box will be mainly described.

FIG. 6 is a plan view showing the configuration of the back surface 151c of the outer box 151 that constitutes the heat insulating box 50 of the refrigerator 1 according to the present embodiment. FIG. 6 shows the inside of the back part 151c. As in the first embodiment, the heat insulating box 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 that of the first embodiment can be applied to the inner box 52 and the heat insulating layer 53.

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

{Circle around (5)}, a heat dissipation pipe 171 extends around the outer periphery (specifically, the upper end and the left and right ends) of the vacuum heat insulator 54. The refrigerant heated in the refrigeration cycle flows through the heat radiation pipe 171. By providing such a heat radiation pipe 171, the occurrence of dew condensation on the surface of the heat insulating box 50 can be suppressed.

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

The machine room wiring 21 is sandwiched between the back surface portion 151 c 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 a cross-sectional configuration taken along the line CC of the back surface portion 151c shown in FIG. The adhesive tape 161 is stuck along the upper end of the back part 151c. One end 161a (lower end) of the adhesive tape 161 in the width direction is sandwiched between the vacuum heat insulating material 54 and the back surface 151c, and extends below the upper end of the vacuum heat insulating material 54. Has reached. Further, the other end 161b (upper end) in the width direction of the adhesive tape 161 reaches the upper end (upper surface 51a side) of the back surface 151c.

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

Thereby, even in the case where the foamed gas generated from the foamed heat insulating material enters between the vacuum heat insulating material 54 and the back surface portion 151c in the manufacturing process of the heat insulating box 50 or the like, the gas is immediately discharged to the outside air without being accumulated. Since it can be released, the rear portion 251c is less likely to be deformed.

In the present embodiment, a refrigerator in which the heat radiating pipe 171 is attached to the back surface 151c of the outer box 151 has been described as an example. However, the machine room wiring 21 may be fixed using the adhesive tape 161 even in the case of a configuration in which the heat radiating pipe is not provided on the back surface of the refrigerator as in the first embodiment. Even in the case where the heat radiation 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 in contact with the vacuum heat insulating material 54. It is preferable that it is sandwiched between the rear surface portion 151c and the lower portion than the upper end portion of the vacuum heat insulating material 54. Further, it is preferable that the other end 161b in the width direction of the adhesive tape 161 reaches the end on the upper side (the upper surface 51a side) of the back surface 151c. Thereby, the space between the vacuum heat insulating material 54 and the back surface portion 151c communicates with the outside air. Note that, in this case, the adhesive tape 161 only needs to have a left and right width that covers 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 a heat radiating pipe is attached to the back of the outer box will be described. In addition, about the structure other than the back part of an outer case, the structure similar to 1st Embodiment can be applied. Thus, in the fourth embodiment, a description will be given mainly of the configuration of the rear portion of the outer box.

FIG. 8 is a plan view showing the configuration of the back part 251c of the outer box 251 constituting the heat insulating box 50 of the refrigerator 1 according to the present embodiment. FIG. 8 shows the inside of the back part 251c. As in the first embodiment, the heat insulating box 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 that of the first embodiment can be applied to the inner box 52 and the heat insulating layer 53.

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

放熱 Further, a heat dissipation pipe 271 extends along the lower end of the vacuum heat insulator 54 below the vacuum heat insulator 54. The heat dissipation pipe 271 is fixed to the back surface 251c by sheet-like adhesive tapes (seal members) 261 and 262. Specifically, a part 271 a of the heat radiation pipe 271 extending along the lower end of the back surface 251 c is fixed by the adhesive tape 261. Further, other portions of the heat dissipation pipe 271 extending along both left and right end portions of the back surface portion 251 c are fixed by an adhesive tape 262.

In the configuration according to the present embodiment, the heat radiation pipes 271 are arranged only in the lower part of the back part 251c, and are not arranged at the left and right ends of the back part 251c. Thereby, compared with the configuration of the third embodiment, the vacuum heat insulating material 54 can be extended and arranged on both left and right sides. Therefore, the surface area of the vacuum heat insulating material 54 increases, and the heat insulating performance of the refrigerator 1 can be further improved.

In the back part 251c according to the present embodiment, similarly to the second embodiment, the machine room wiring includes the first machine room wiring (high-voltage AC wiring) 21 and the second machine room wiring 22 (low-voltage DC wiring). 22) and is fixed to the rear surface portion 251c.

The first machine room wiring 21 and the second machine room wiring 22 are sandwiched between the back part 251 c of the outer case 51 and the vacuum heat insulating material 54. In the present embodiment, the lower portions of the first machine room wiring 21 and the second machine room wiring 22 are fixed together with the heat radiation 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 temporarily extends in the lateral direction (left direction). Then, the first machine room wiring 21 extending in the horizontal direction is bent again near the bent portion of the heat radiation pipe 271, extends in the vertical direction (downward), and protrudes from the back surface 251 c.

{Circle around (2)} The lower side of the second machine room wiring 22 is bent (22c) below the vacuum heat insulating material 54 and temporarily extends in the lateral direction (rightward). The second machine room wiring 22 extending in the horizontal direction is bent again near the bent portion of the heat radiation pipe 271, extends in the vertical direction (downward), and protrudes from the rear surface portion 251 c.

A part of the first machine room wiring 21 and a part of the second machine room wiring 22 extending in the horizontal direction along the lower end of the vacuum heat insulating material 54 are fixed by the adhesive tape 261. A part of the first machine room wiring 21 and a part of the second machine room wiring 22 extending in the vertical direction at both left and right ends of the back surface 251 c are fixed by an adhesive tape 262.

FIG. 9 shows a cross-sectional configuration taken along the line DD of the back part 251c shown in FIG. The adhesive tape 261 extends in the lateral direction 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.

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

によって With such a configuration, a slight gap is formed between the

adhesive tapes

261 and 262 that fix the first machine room wiring 21 and the second machine room wiring 22 and the back surface 151c. This gap is formed between the upper end of the vacuum heat insulating material 54 and the back surface 251c because the end 261a of the adhesive tape 261 is sandwiched between the upper end of the vacuum heat insulating material 54 and the back surface 251c. Communicate with space. Further, since the end 262b of the adhesive tape 262 reaches the lower end (the bottom surface 51b side) of the back surface 251c, the space between the lower end of the vacuum heat insulating material 54 and the back surface 251c is reduced. Communicate with outside air.

This makes it difficult for the rear surface portion 251c to be deformed when the vacuum heat insulating material 54 contracts or the like in the manufacturing process of the heat insulating box body 50 or the like.

In the present embodiment, a refrigerator in which the heat radiation pipe 271 is attached to the back surface 251c of the outer box 251 has been described as an example. However, even in the case of a configuration in which a 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

adhesive tape

261 and 262 are used in the above-described manner. The second machine room wiring 22 may be fixed to the back part 251c.

<Fifth embodiment>
Subsequently, a fifth embodiment of the present invention will be described. In the fifth embodiment, a description will be given of a configuration example of a refrigerator provided with no vacuum heat insulating material. Note that, for other configurations, the same configuration as that of the first embodiment can be applied. Thus, in the fifth embodiment, a description will be given focusing on a configuration different from that of the first embodiment.

FIG. 11 shows a cross-sectional configuration of the heat insulating box 350 of the refrigerator 1 according to the present embodiment. The heat insulating box 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 in the first embodiment.

各種

Various wirings

21 and 23 are arranged in the heat insulating layer 53. The wiring 21 electrically connects the external electrical unit 41 to each electric component (for example, the compressor 31) in the machine room 30. The wiring 21 is also called a machine room wiring. The wiring 23 is a wiring for electrically connecting the external electrical unit 41 and the internal electrical 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 of the heat insulating box 50 (that is, the outer box 51 side). In the present embodiment, since no vacuum heat insulating material is provided, the wiring 21 is fixed inside 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 51a of the outer case 51 and the electric component such as the compressor 31 arranged on the bottom surface 51b is connected to the outer case. By fixing to 51, similarly to the first embodiment, it is possible to reduce the number of wirings that may hinder the fluidity of the foamed heat insulating material. Accordingly, it is possible to suppress the generation of the unfilled portion of the heat insulating material which may occur in the process of forming the foamed heat insulating material, and to suppress the generation of the void (void) in the heat insulating layer 53. In addition, the heat insulation performance of the heat insulating box 50 can be maintained by reducing the number of wirings extending between the outer box 51 and the inner box 52.

FIG. 12 shows a cross-sectional configuration of a heat-insulating box 350 'according to a modification. 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 51c. Thereby, when the plurality of wirings 21 are arranged in 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.

The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Further, configurations obtained by combining the configurations of different embodiments described in this specification with each other are also included in the scope of the present invention.

1: refrigerator 21: machine room wiring, first machine room wiring (wiring, high-voltage AC wiring)
22: 2nd machine room wiring (wiring, wiring for low voltage DC)
23: Internal wiring 30: Machine room 31: Compressor (electric parts)
41: Outside electrical unit (electric unit)
50: Insulated box 51: Outer box 51c: Back part (of outer box) 52: Inner box 53: Heat insulating layer 54: Vacuum heat insulator 151: Outer box 161: Adhesive tape (seal member)
161a: End 161b (of adhesive tape): End 171 (of adhesive tape): Heat dissipation pipe 251: Outer box 261: Adhesive tape (seal member)
261a: end 262 (of adhesive tape): adhesive tape (seal member)
262b: End 350 (of adhesive tape): Insulated box 350 ': Insulated box

Claims

An insulating box having an outer box and an inner box;
An electrical unit arranged on one of the upper and lower parts of the heat insulating box,
A machine room that is arranged on the other of the upper and lower parts of the heat insulating box and houses the electric parts,
Comprising at least one wiring connecting the electrical unit and the electric component,
The refrigerator, wherein the wiring is fixed to the outer box.
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 comprising a seal member for fixing the wiring to the outer box,
One end of the seal 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 heat insulating box,
The refrigerator according to claim 2.
The heat insulation box has a heat dissipation pipe,
The heat dissipation pipe is fixed by the seal member,
The refrigerator according to claim 3.
Have 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 high-voltage AC wiring and the low-voltage DC wiring are spaced apart from each other.
The refrigerator according to any one of claims 1 to 5, wherein the plurality of wires are arranged along a plane of the outer box.