JP2022032636A - refrigerator - Google Patents

Abstract

To provide a refrigerator that has a plurality of cabinets constituted to be freely attached and detached and that suppresses dew condensation while sending cool air from a main cabinet to a sub cabinet via a relay duct.SOLUTION: A refrigerator 100 has a subcabinet SC connected to a main cabinet MC having a cooling device C via a relay duct D, and thereby has a cool air sending flow passage L formed reaching the subcabinet SC via the relay duct D from the main cabinet MC, and also comprises heat cutoff members Z1 and Z2 which have lower thermal conductivity than a cylindrical member Y3 the internal space of which serves as the cool air sending flow passage L between an opposite face X1 of the main cabinet MC which is opposed to the relay duct D and the cool air sending flow passage L, and between an opposite face X2 of the subcabinet SC opposed to the relay duct D and the cool air sending flow passage L.SELECTED DRAWING: Figure 3

Description

The present invention relates to a refrigerator.

As shown in Patent Document 1, there is a conventional refrigerator in which a plurality of cabinets are detachably configured. With such a configuration, the user can freely customize the arrangement of cabinets and the capacity of the refrigerator according to lifestyle changes such as the birth of a child, independence, and living with parents, without having to buy a new refrigerator. be able to.

In such a refrigerator, if each cabinet is equipped with a cooling device, the storage volume is reduced and the cost is significantly increased. Therefore, in order to suppress the decrease in the storage volume, for example, one main cabinet is provided with a cooling device, and a configuration has been developed in which the main cabinet and the other sub-cabinets are connected via a relay duct. With such a configuration, cold air can be transported from the main cabinet to the sub-cabinet via the relay duct, and it is not necessary to equip each cabinet with a cooling device.

However, when cold air is conveyed through the relay duct in this way, the cold air blowing surface inside the relay duct becomes very cold (for example, -25 ° C), so that the cold air is transmitted to the surface of the relay duct and the cabinet, causing dew condensation. Occurs.

Japanese Unexamined Patent Publication No. 10-68573

Therefore, the present invention has been made to solve the above-mentioned problems at once, and in a refrigerator having a plurality of cabinets detachably configured, while transporting cold air from the main cabinet to the sub-cabinet via a relay duct. The main issue is to suppress the occurrence of dew condensation.

That is, in the refrigerator according to the present invention, a sub-cabinet having no cooling device is connected to the main cabinet having a cooling device via a relay duct, whereby cold air reaching the sub-cabinet from the main cabinet via the relay duct. A refrigerator in which a transport flow path is formed, the facing surface facing the relay duct in the main cabinet and the cold air transport flow path, and the facing surface facing the relay duct in the sub-cabinet. It is characterized by having a heat-cutting member that is interposed between the cold air transport flow path and whose internal space has a lower thermal conductivity than the tubular member that serves as the cold air transport flow path.

According to the refrigerator configured in this way, between the facing surface facing the relay duct in the main cabinet and the cold air transport flow path, and between the facing surface facing the relay duct in the sub cabinet and the cold air transport flow path. Since the heat-cutting member is interposed in each of them, it is possible to prevent the cold air flowing through the cold air transport flow path from being transmitted to the surface of the relay duct or the surface of the cabinet.
As a result, in a configuration in which the sub-cabinet can be attached to and detached from the main cabinet, it is possible to suppress the occurrence of dew condensation while transporting cold air from the main cabinet to the sub-cabinet via the relay duct.

As a more specific configuration, the main cabinet opens to the first facing surface facing the relay duct, and the main side flow path constituting the main cabinet side of the cold air transport flow path and the main side. It has the first heat-cutting member interposed between the flow path and the first facing surface, the sub-cabinet opens to the second facing surface facing the relay duct, and the cold air transport flow path is provided. It has a sub-side flow path constituting the sub-cabinet side and a second heat-cutting member interposed between the sub-side flow path and the second facing surface, and the relay duct has an opening at one end. A relay flow that is formed on the third facing surface facing the main cabinet and the other end opening is formed on the fourth facing surface facing the sub cabinet to communicate the main flow path and the sub side flow path. A third heat-cutting member interposed between the path, the relay flow path and the third facing surface, and a fourth heat-cutting member interposed between the relay flow path and the fourth facing surface. Can be mentioned.
In such a configuration, since a heat-cutting member is provided between each facing surface and the cold air transport flow path, for example, the back surface of the relay duct is exposed and becomes a part of the back surface of the refrigerator. However, it is possible to suppress the transmission of cold air to the back surface of the relay duct, and it is possible to suppress the occurrence of dew condensation in various configurations.

It is preferable that the relay duct has a tubular member made of resin, and the internal space of the tubular member is formed as the relay flow path.
By forming the relay flow path with the resin tubular member in this way, for example, urethane foam can be sealed inside the relay duct.

As described above, in a configuration in which the main cabinet has a main flow path, the relay duct has a relay flow path, and the sub cabinet has a sub side flow path, the connection points of the respective flow paths are displaced due to assembly variation. This leads to cold air leakage and increased pressure loss.
Therefore, the end portion of the main side flow path on the first facing surface side, the end portion of the sub side flow path on the second facing surface side, the end portion of the relay flow path on the third facing surface side, and It is preferable that at least one of the ends of the relay flow path on the fourth facing surface side has a shape in which the width of the flow path widens toward the corresponding facing surface.
With such a configuration, it is possible to absorb the deviation of the connection portion due to the assembly variation of each flow path by expanding the flow path width, and it is possible to reduce the increase of cold air leakage and pressure loss.

It is preferable that each of the facing surfaces of the main cabinet and the relay duct facing each other or the facing surfaces of the sub-cabinet and the relay duct facing each other are inclined surfaces inclined with respect to the horizontal direction.
With such a configuration, for example, it is possible to assemble the sub-cabinet from the front after attaching the relay duct to the main cabinet, or to attach the relay duct from the rear after assembling the main cabinet and the sub-cabinet. You can improve your sex.

As an example of a more specific embodiment, the facing surfaces of the main cabinet and the relay duct facing each other and the facing surfaces of the sub-cabinet and the relay duct facing each other with respect to each other in the horizontal direction. An embodiment in which the inclined surface is inclined can be mentioned.

More specifically, when the inclination angle of the inclined surface with respect to the horizontal direction is 25 ° or more and 65 ° or less, the assembling property can be improved more reliably.

It is preferable that the sealing member is interposed between the facing surfaces of the main cabinet and the relay duct facing each other and between the facing surfaces of the sub-cabinet and the relay duct facing each other.
In this case, leakage of cold air flowing through the cold air transport flow path can be prevented more reliably.

An embodiment in which the relay duct is arranged so that a part of the surface thereof is exposed can be mentioned.
In this case, as described above, the sub-cabinet can be assembled from the front of the relay duct, or the relay duct can be attached from the rear, and the assembleability is good.

According to the present invention configured as described above, in a refrigerator having a plurality of cabinets detachably configured, it is possible to suppress the occurrence of dew condensation while transporting cold air from the main cabinet to the sub-cabinet via a relay duct.

The perspective view which shows the whole structure of the refrigerator in this embodiment. The cross-sectional view which shows the internal structure of the refrigerator in the same embodiment. The cross-sectional view which shows the peripheral structure of the relay duct of the refrigerator in the same embodiment. The perspective view which shows an example of how to assemble a refrigerator in the same embodiment. The cross-sectional view which shows the internal structure of the refrigerator in another embodiment. The cross-sectional view which shows the internal structure of the refrigerator in another embodiment. The cross-sectional view which shows the internal structure of the refrigerator in another embodiment.

Hereinafter, an embodiment of the refrigerator according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, the refrigerator 100 according to the present embodiment is formed by assembling a plurality of cabinets MC and SC, and these cabinets MC and SC are configured to be detachable from each other.

Specifically, as shown in FIG. 2, the refrigerator 100 includes a main cabinet MC, a sub-cabinet SC that can be attached to and detached from the main cabinet MC, and a relay duct D that connects the main cabinet MC and the sub-cabinet SC. ing.
In the following, a case where one sub-cabinet SC is attached to the main cabinet MC will be described. However, a plurality of sub-cabinet SCs may be attached to the main cabinet MC, or the sub-cabinet SC attached to the main cabinet MC may be further attached. The sub-cabinet SC may be attached.

As shown in FIGS. 1 and 2, the main cabinet MC has a rectangular parallelepiped shape or a cube shape in which a door 1 is provided on the front surface, and includes a cooling device C, a compressor, and the like that constitute a refrigerant circuit.

As shown in FIGS. 1 and 2, the sub-cabinet SC has a rectangular parallelepiped shape or a cube shape with a door 2 provided on the front surface, and is not provided with a cooling device C or a compressor that constitutes a refrigerant circuit. The configuration is different from the main cabinet MC. The sub-cabinet SC of the present embodiment is detachable from the upper surface 11 of the main cabinet MC, but may be detachable from the lower surface or the side surface of the main cabinet MC.

The relay duct D is interposed between the main cabinet MC and the sub-cabinet SC to connect them so that the cold air from the cooling device C described above flows from the main cabinet MC to the sub-cabinet SC. be. The relay duct D is interposed between the facing joint surfaces 11 and 12 of the main cabinet MC and the sub cabinet SC facing each other, and in this embodiment, the relay duct D and the upper surface 11 which is the facing joint surface 11 of the main cabinet MC. , Intervenes between the lower surface 12 which is the facing joint surface 12 of the sub-cabinet SC.

By connecting the main cabinet MC and the sub-cabinet SC via the relay duct D in this way, as shown in FIG. 2, the cold air transport flow path from the main cabinet MC to the sub-cabinet SC via the relay duct D. L is formed.

Subsequently, the peripheral structure of the cold air transport flow path L will be described more specifically.
First, as shown in FIG. 3, the main cabinet MC opens to the first facing surface X1 facing the relay duct D, and has a main side flow path L1 constituting the main cabinet MC side of the cold air transport flow path L. is doing. The main flow path L1 is an internal space of the first tubular member Y1 made of a resin such as ABS, and guides the cold air generated by the cooling device C to the relay duct D. In the main cabinet MC of the present embodiment, a part of the facing joint surface (upper surface) 11 is recessed so that one end of the relay duct D can be fitted into the recess 20. That is, the bottom surface of the recess 20 is formed as the first facing surface X1 described above.

On the other hand, as shown in FIG. 3, the sub-cabinet SC has an opening in the second facing surface X2 facing the relay duct D and has a sub-side flow path L2 constituting the sub-cabinet SC side of the cold air transport flow path L. is doing. This sub-side flow path L2 is an internal space of a second tubular member Y2 made of a resin such as ABS, and communicates between the relay duct D and the inside of the sub-cabinet SC to allow the cold air flowing from the relay duct D to flow. It leads to the inside of the sub-cabinet SC. In the sub-cabinet SC of the present embodiment, a part of the facing joint surface (lower surface) 12 is inclined, and this inclined surface is referred to as the second facing surface X2. The inclination referred to here is a concept including the vertical direction. Further, as will be described in detail later, the facing surface X4 facing the sub-cabinet SC of the relay duct D is also an inclined surface, whereby, for example, by bringing the sub-cabinet SC closer to the relay duct D from the front, both facing surfaces. X2 and X4 are designed to overlap. The inclination angles of these facing surfaces (inclined surfaces) X2 and X4 with respect to the horizontal direction are, for example, 25 ° or more and 65 ° or less.

As shown in FIG. 3, the relay duct D has a relay flow path L3 that opens to the third facing surface X3 facing the main cabinet MC and opens to the fourth facing surface X4 facing the sub-cabinet SC. There is. This relay flow path L3 is an internal space of a third tubular member Y3 made of a resin such as ABS, and is a cold air that has flowed from the main side flow path L1 by communicating with the main side flow path L1 and the sub side flow path L2. Is guided to the sub-side flow path L2.

The surface of the relay duct D of the present embodiment is made of a resin such as ABS, and the above-mentioned third tubular member Y3 is arranged inside the relay duct D, and urethane foam or the like is formed around the third tubular member Y3. A heat insulating material is enclosed.

To explain a more specific configuration of the relay duct D, a convex portion 30 is formed on the surface of the relay duct D on the main cabinet MC side, and the tip surface of the convex portion 30 is used as the above-mentioned third facing surface X3. It is formed. On the other hand, the surface of the relay duct D on the sub-cabinet SC side is inclined with respect to the horizontal direction, and this inclined surface is formed as the above-mentioned fourth facing surface X4. Further, the relay duct D here is arranged so that at least a part of the surface thereof is exposed, and specifically, the back surface 40 thereof constitutes a part of the back surface of the refrigerator 100.

In such a configuration, when the sub-cabinet SC is attached to the main cabinet MC, for example, as shown in FIG. 4, the convex portion 30 of the relay duct D is first fitted into the concave portion 20 of the main cabinet MC, and the first facing surface X1 and the third By joining the facing surface X3, the upper flow path and the relay flow path L3 communicate with each other. Next, as shown in FIG. 4, the sub-cabinet SC is brought closer to the relay duct D from the front, for example, and the second facing surface X2 and the fourth facing surface X4 are joined to join the relay flow path L3 and the sub side. It communicates with the flow path L2. As a result, the cold air transport flow path L is formed by the main side flow path L1, the relay flow path L3, and the sub side flow path L2.

Here, if the connection points of the respective flow paths are displaced due to the assembly variation of the main side flow path L1, the relay flow path L3, and the sub side flow path L2, cold air may leak from these points or pressure loss may occur. There is a concern that it will increase.
Therefore, in the present embodiment, in order to reduce the deviation due to the assembly variation described above, at least one of the main flow path L1, the relay flow path L3, and the sub side flow path L2 has a connection point with the adjacent flow path. By widening the flow path width, it is possible to absorb assembly variations.

More specifically, as shown in FIG. 2, at the connection point between the main flow path L1 and the relay flow path L3, the end portion of the main side flow path L1 on the first facing surface X1 side is the first portion. It is formed in a tapered shape in which the width of the flow path gradually widens toward the facing surface X1.
Further, at the connection point between the sub-side flow path L2 and the relay flow path L3, the end portion of the relay flow path L3 on the fourth facing surface X4 side gradually flows toward the fourth facing surface X4. It is formed in a tapered shape that widens.
In order to be able to absorb assembly variations, the shape does not necessarily have to be tapered as long as the flow path width is widened, and the specific flow path shape at the connection point may be appropriately changed.

Further, in the present embodiment, in order to ensure the sealing property between the main cabinet MC and the relay duct D, the first seal member S1 is interposed between the facing surfaces of the main cabinet MC and the relay duct D facing each other. ing. Further, in order to ensure the sealing property between the sub-cabinet SC and the relay duct D, a second seal member S2 is interposed between the facing surfaces of the sub-cabinet SC and the relay duct D facing each other. Specifically, these first seal member S1 and second seal member S2 are annular members provided so as to surround the cold air transport flow path L, and are foams formed by using, for example, rubber.

Therefore, as shown in FIG. 3, the refrigerator 100 of the present embodiment has a first heat-cutting member Z1 interposed between the first facing surface X1 of the main cabinet MC and the cold air transport flow path L, and the sub-cabinet SC. A second heat cutting member Z2 interposed between the second facing surface X2 and the cold air transport flow path L is provided.

The first heat-cutting member Z1 and the second heat-cutting member Z2 are for suppressing the cold air flowing through the cold air transport flow path L from being transmitted to the surface of the refrigerator 100, and at least the internal space is the cold air transport flow path. It has a lower thermal conductivity than the above-mentioned tubular member Y which is L. Specifically, the first heat-cutting member Z1 has a lower thermal conductivity than the member (here, a resin such as ABS) constituting the first tubular member Y1 described above, and is, for example, a synthetic resin such as styrofoam. .. Further, the second heat-cutting member Z2 has a lower thermal conductivity than the member (here, a resin such as ABS) constituting the second tubular member Y2 described above, and is, for example, a synthetic resin such as styrofoam.

The first heat cutting member Z1 is interposed between the first facing surface X1 and the main flow path L1, and is specifically arranged on the back side of the first facing surface X1 and is arranged on the back side of the first facing surface X1 and is also arranged on the back side of the first facing surface X1. It has a through hole that constitutes the end of the.

The second heat-cutting member Z2 is interposed between the second facing surface X2 and the sub-side flow path L2, and is specifically arranged on the back side of the second facing surface X2 and the sub-side flow path L2. It has a through hole that constitutes the end of the.

Further, as shown in FIG. 2, the refrigerator 100 of the present embodiment has a third heat cutting member Z3 interposed between the third facing surface X3 of the relay duct D and the cold air transport flow path L, and the relay duct D. Further, a fourth heat cutting member Z4 interposed between the fourth facing surface X4 and the cold air transport flow path L is provided.

In the third heat-cutting member Z3 and the fourth heat-cutting member Z4, the cold air flowing through the cold air transport flow path L is transferred to the surface of the refrigerator 100 in the same manner as the first heat-cutting member Z1 and the second heat-cutting member Z2 described above. This is for suppressing transmission, and has a lower thermal conductivity than the tubular member Y whose internal space is the cold air transport flow path L. Specifically, the third heat-cutting member Z3 has a lower thermal conductivity than the member (here, a resin such as ABS) constituting the third tubular member Y3 described above, and is, for example, a synthetic resin such as styrofoam. .. Further, the fourth heat-cutting member Z4 has a lower thermal conductivity than the member (here, a resin such as ABS) constituting the fourth tubular member Y4 described above.

The third heat-cutting member Z3 is interposed between the third facing surface X3 and the relay flow path L3, and is specifically arranged on the back side of the third facing surface X3 and at one end of the relay flow path L3. It has a through hole that constitutes the part.

The fourth heat-cutting member Z4 is interposed between the fourth facing surface X4 and the relay flow path L3, and is specifically arranged on the back side of the fourth facing surface X4 and other than the relay flow path L3. It has a through hole that constitutes the end.

As described above, these heat-cutting members Z1 to Z4 suppress the heat transfer of cold air to the surface of the refrigerator 100, and have a function of cutting the heat transfer path of cold air from the cold air transport flow path L to the surface of the refrigerator 100. Demonstrate. More specifically, the first heat cutting member Z1 discontinues the outer plate of the main cabinet MC (specifically, the first facing surface X1) and the tubular member Y forming the cold air transport flow path L. These are thermally cut. In the second heat cutting member Z2, the outer plate of the sub-cabinet SC (specifically, the second facing surface X2) and the tubular member Y forming the cold air transport flow path L are discontinuous, and these are heated. Is disconnected. In the third heat cutting member Z3, the outer surface of the relay duct D (specifically, the third facing surface X3) and the tubular member Y forming the cold air transport flow path L are discontinuous, and these are thermally connected. It is disconnected to. In the fourth heat cutting member Z4, the outer surface of the relay duct D (specifically, the fourth facing surface X4) and the tubular member Y forming the cold air transport flow path L are discontinuous, and these are thermally connected. It is disconnected to.

According to the refrigerator 100 configured in this way, the first heat cutting member Z1 is interposed between the first facing surface X1 of the main cabinet MC and the main flow path L1, and the second facing surface of the sub cabinet SC is interposed. Since the second heat cutting member Z2 is interposed between X2 and the sub-side flow path L2, it is possible to suppress the transmission of cold air to the surface of the relay duct D, the surface of the main cabinet MC, and the surface of the sub-cabinet SC. can.
As a result, in a configuration in which the sub-cabinet SC can be attached to and detached from the main cabinet MC, it is possible to suppress the occurrence of dew condensation while transporting cold air from the main cabinet MC to the sub-cabinet SC via the relay duct D.

Further, a third heat cutting member Z3 is interposed between the third facing surface X3 of the relay duct D and the relay flow path L3, and a third heat cutting member Z3 is interposed between the fourth facing surface X4 of the relay duct D and the relay flow path L3. Since the heat-cutting member Z4 of 4 is interposed, it is possible to suppress the transmission of cold air to the surface (for example, the back surface 40) of the relay duct D.

Further, since the internal space of the resin-made third tubular member Y3 is formed as the relay flow path L3, for example, urethane foam can be sealed inside the relay duct D.

Further, since the second facing surface X2 and the fourth facing surface X4 facing each other between the sub-cabinet SC and the relay duct D are inclined surfaces inclined with respect to the horizontal direction, for example, the relay duct D is attached to the main cabinet MC. It becomes possible to assemble the sub-cabinet SC from the front later, and the assembleability can be improved.

The present invention is not limited to the above embodiment.

For example, in the above-described embodiment, the second facing surface X2 and the fourth facing surface X4 facing each other between the sub-cabinet SC and the relay duct D are used as inclined surfaces, but these second facing surfaces X2 and the fourth facing surface X4 are used. May be formed as a horizontal plane, as shown in FIGS. 5 and 6. Note that FIG. 5 shows a mode in which the back surface of the relay duct D constitutes a part of the back surface of the refrigerator 100, and FIG. 6 shows a mode in which the outer surface of the relay duct D is not exposed.

Further, as shown in FIG. 7, the first facing surface X1 and the third facing surface X3 facing each other between the main cabinet MC and the relay duct D may be inclined surfaces inclined with respect to the horizontal direction.
With such a configuration, it is possible to attach the relay duct D from the rear after assembling the main cabinet MC and the sub cabinet SC.

At the connection point between the main flow path L1 and the relay flow path L3, the flow path width at the end of the main side flow path L1 on the first facing surface X1 side was widened, but at this connection point, the relay flow path was widened. The flow path width at the end of L3 on the third facing surface X3 side may be widened. Further, at the connection point between the sub-side flow path L2 and the relay flow path L3, the flow path width at the end of the relay flow path L3 on the fourth facing surface X4 side was widened. The width of the flow path at the end of the flow path L2 on the second facing surface X2 side may be widened.

In the above embodiment, the back surface 40 of the relay duct D constitutes a part of the back surface of the refrigerator 100, but the relay duct D may be arranged so that the surface of the relay duct D is not exposed. In this case, the third relay duct D may be arranged. It is not always necessary to provide the heat-cutting member Z3 and the fourth heat-cutting member Z4.

Furthermore, the refrigerator 100 according to the present invention may be provided with a plurality of sub-cabinet SCs or may be provided with a plurality of main cabinet MCs.

In addition, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

100 ・ ・ ・ Refrigerator MC ・ ・ ・ Main cabinet SC ・ ・ ・ Sub cabinet D ・ ・ ・ Relay duct D1 ・ ・ ・ Door C ・ ・ ・ Cooling device D2 ・ ・ ・ Door 11 ・ ・ ・ Facing joint surface (upper surface)
12 ... Facing joint surface (lower surface)
L ... Cold air transport flow path L1 ... Main side flow path L2 ... Sub side flow path L3 ... Relay flow path X1 ... First facing surface X2 ... Second facing surface X3 ... 3rd facing surface X4 ・ ・ ・ 4th facing surface Y1 ・ ・ ・ 1st tubular member Y2 ・ ・ ・ 2nd tubular member Y3 ・ ・ ・ 3rd tubular member 20 ・ ・ ・ concave 30 ・ ・ ・ convex Part 40 ・ ・ ・ Back surface S1 ・ ・ ・ First seal member S2 ・ ・ ・ Second seal member Z1 ・ ・ ・ First heat member Z2 ・ ・ ・ Second heat member Z3 ・ ・ ・ Third heat member Z4 ... Fourth thermal member

Claims (9)

A sub-cabinet having no cooling device is connected to the main cabinet having a cooling device via a relay duct, whereby a refrigerator forming a cold air transport flow path from the main cabinet to the sub-cabinet via the relay duct. And,
Intervening between the facing surface facing the relay duct in the main cabinet and the cold air transport flow path, and between the facing surface facing the relay duct in the sub-cabinet and the cold air transport flow path, and inside. A refrigerator characterized in that a space is provided with a heat-cutting member having a lower thermal conductivity than a tubular member serving as a cold air transport flow path. The main cabinet
An opening on the first facing surface facing the relay duct, and a main side flow path constituting the main cabinet side of the cold air transport flow path, and a flow path on the main side.
It has the first heat-cutting member interposed between the main flow path and the first facing surface.
The sub-cabinet
A sub-side flow path that opens to the second facing surface facing the relay duct and constitutes the sub-cabinet side of the cold air transport flow path, and a sub-side flow path.
It has the second heat-cutting member interposed between the sub-side flow path and the second facing surface.
The relay duct
One end opening is formed on the third facing surface facing the main cabinet, and the other end opening is formed on the fourth facing surface facing the sub cabinet to communicate the main flow path and the sub side flow path. With the relay flow path
The third heat-cutting member interposed between the relay flow path and the third facing surface,
The refrigerator according to claim 1, further comprising the fourth heat-cutting member interposed between the relay flow path and the fourth facing surface. The refrigerator according to claim 2, wherein the relay duct has a tubular member made of resin, and the internal space of the tubular member is formed as the relay flow path. The end of the main flow path on the first facing surface side, the end of the sub-side flow path on the second facing surface side, the end of the relay flow path on the third facing surface side, and the relay. The refrigerator according to claim 2 or 3, wherein at least one of the ends of the flow path on the fourth facing surface side has a shape in which the width of the flow path increases toward the corresponding facing surface. 1 The refrigerator according to any one of 4 to 4. 5. Claim 5, each of the facing surfaces of the main cabinet and the relay duct facing each other and the facing surfaces of the sub-cabinet and the relay duct facing each other are inclined surfaces inclined with respect to the horizontal direction. The listed refrigerator. The refrigerator according to claim 5 or 6, wherein the inclination angle of the inclined surface with respect to the horizontal direction is 25 ° or more and 65 ° or less. Claims 1 to 7, wherein a sealing member is interposed between the facing surfaces of the main cabinet and the relay duct facing each other and between the facing surfaces of the sub-cabinet and the relay duct facing each other. The refrigerator described in any one of them. The refrigerator according to any one of claims 1 to 8, wherein the relay duct is arranged so that at least a part of the surface thereof is exposed.

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