JP2012112623A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which can reduce a space occupied by heat transfer piping, an accumulator and piping connected thereto.SOLUTION: The refrigerator includes a compressor 15, a condensation pipe 16, a capillary 18, a cooler 5 having a fin 7 and heat transfer piping 6 penetrating the fin 7, an accumulator 8 reserving a liquid refrigerant, an outlet pipe 9b connected to a refrigerant outlet of the accumulator 8, and a suction pipe 11 provided above the cooler 5. The outlet pipe 9b is inserted into the accumulator 8; and the accumulator 8 and the outlet pipe 9b are arranged in such a manner that a refrigerant flow outlet of the outlet pipe 9b is positioned above a vertical center position of the accumulator 8. The heat transfer piping 6 is laid in a plurality of stages in a vertical direction. A connecting part between the suction pipe 11 and the outlet pipe 9b is laid in a space 12 produced by forming the heat transfer piping 6 in a short size.

Description

  The present invention relates to a refrigerator including a cooler and an accumulator.

  As a conventional refrigerator including a cooler and an accumulator, a cooler having a plurality of fins and heat transfer pipes that are formed in a plurality of stages vertically through the fins, and connected to the cooler via an inlet pipe, is substantially horizontal And an accumulator installed in Further, in such a conventional refrigerator, the end opposite to the cooler connection side end in the pipe installed above the cooler (for example, the outlet pipe connected to the outlet of the accumulator) The end is bent upward and welded to the connection pipe.

Japanese Patent Laying-Open No. 2004-150771 (page 7, FIG. 5)

In the conventional refrigerator, since the accumulator is provided substantially horizontally, the liquid cannot be stored above the end of the outlet pipe connected to the outlet side of the accumulator (the refrigerant inlet of the outlet pipe). For this reason, when it was going to increase the liquid storage amount of an accumulator, it was necessary to enlarge an accumulator and there existed a subject that the capacity | capacitance of a refrigerator reduced.
In addition, the end of the pipe installed above the cooler (for example, the outlet pipe connected to the outlet of the accumulator) on the side opposite to the end on the cooler connection side bends the end to the connection pipe. And welded connected. For this reason, the space which the said piping occupies to the up-down direction became large, and the subject that the capacity | capacitance of a refrigerator reduced occurred.

  The present invention has been made to solve the above-described problems, and provides a refrigerator capable of reducing the space occupied by heat transfer piping, an accumulator, and piping connected to these.

A refrigerator according to the present invention includes a compressor that compresses a refrigerant, a condensing unit that condenses the refrigerant, an expansion device that expands the refrigerant, a plurality of fins stacked at predetermined intervals, and a stacking direction of these fins. It has a heat transfer pipe that penetrates it, is provided between the heat transfer pipe and the compressor, the cooler that cools the passing air, the relay pipe that connects the expansion device and the heat transfer pipe of the cooler, and the liquid refrigerant A refrigerator comprising: an accumulator for storing; an outlet pipe connected to a refrigerant outlet of the accumulator; a refrigerant inflow pipe inserted into the accumulator; and an inlet pipe connecting the outlet pipe and the compressor. ,
The accumulator is installed so that the refrigerant inlet of the outlet pipe is located above the central position in the vertical direction of the accumulator, and the accumulator and outlet pipe are arranged above the cooler, The pipes are provided in a plurality of stages in the vertical direction, and at least the uppermost heat transfer pipe and the lower heat transfer pipe are formed shorter than the other heat transfer pipes, and a gap is formed above the cooler. The connecting portion between the suction pipe and the outlet pipe is arranged.

  Since the refrigerator in the present invention is installed so that the refrigerant inlet of the outlet pipe is located above the central position in the vertical direction of the accumulator, the liquid reservoir that can be stored without enlarging the accumulator in order to secure the amount of liquid reservoir The amount can be increased. In addition, the outlet pipe installed above the cooler is connected to the suction pipe through a gap formed by shortening at least the uppermost heat transfer pipe and the lower heat transfer pipe. For this reason, it is not necessary to bend the outlet pipe upward, and a space-saving configuration can be obtained.

It is a sectional side view of the refrigerator in Embodiment 1 of this invention. It is a schematic block diagram of the refrigerating cycle of the refrigerator in Embodiment 1 of this invention. It is a front view of the cooler and its vicinity in Embodiment 1 of the present invention. It is a perspective view of the cooler and its vicinity in Embodiment 1 of the present invention. It is a perspective view of another example of the cooler in Embodiment 1 of this invention and its vicinity. It is a sectional side view of the accumulator in Embodiment 1 of this invention. It is a front enlarged view of the space | gap part of the cooler in Embodiment 1 of this invention. It is a side surface enlarged view of the space | gap part of the cooler in Embodiment 1 of this invention. It is a front view of the cooler in Embodiment 2 of this invention, and its vicinity.

  Hereinafter, an example of the refrigerator in the present invention will be described in detail with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a side sectional view of the refrigerator according to Embodiment 1 of the present invention. 1 is the front side of the refrigerator according to the first embodiment.
As shown in FIG. 1, a refrigerator 100 according to the first embodiment has an outer shell formed of a heat insulating box 1. The heat insulating box 1 (corresponding to the casing in the present invention) is a steel box outer box 1a, an inner box 1b obtained by vacuum molding a synthetic resin, and heat insulation filled and foamed between the outer box 1a and the inner box 1b. It is comprised by the material 1c etc. The inside of the heat insulation box 1 is partitioned by a partition wall to form a plurality of storage chambers. In the first embodiment, the refrigerator compartment 3 is provided in the upper stage and the freezer compartment 4 is provided in the lower stage, and the refrigerator compartment 3 and the freezer compartment 4 are partitioned by the partition wall 2.

A cooler 5 is provided on the back of the freezer compartment 4. A machine room 20 is provided below the cooler 5, and a compressor 15 is installed. A blower fan 14 that circulates the air that has passed through the cooler 5 in the storage chamber is provided above the cooler 5.
Below the cooler 5, a defrosting heater (glass tube heater) 13 that operates when the cooler 5 is defrosted is provided. By transmitting the radiant heat and natural stagnation by the defrosting heater 13 to the cooler 5, the frost adhering to the cooler 5 can be melted and removed.

Next, the structure of the refrigerating cycle used for the refrigerator in this Embodiment 1 is demonstrated.
FIG. 2 is a schematic configuration diagram of the refrigeration cycle of the refrigerator in the first embodiment of the present invention. In FIG. 2, the refrigeration cycle of the refrigerator includes a compressor 15, a condenser tube 16 (corresponding to the condensing part of the present invention), a dryer 17, a capillary tube 18 (corresponding to the expansion device of the present invention), the first relay pipe 10a, The relay pipe 10b, the cooler 5, the inlet pipe 9a, the accumulator 8, the outlet pipe 9b, and the suction pipe 11 are connected in this order so that the refrigerant flows. Here, the condenser tube 16 may be, for example, a heat exchanger that functions as a condenser, and the capillary tube 18 may be, for example, an expansion valve.

Although not particularly illustrated, among the constituent elements of the refrigeration cycle in the first embodiment, constituent elements other than the compressor 15 and the cooler 5 are arranged at the following positions, for example.
A condensing pipe 16 is connected to the discharge side of the compressor 15 disposed in the machine room 20, and the condensing pipe 16 passes through the inside of the heat insulating material 1c. Further, the condenser pipe 16 is connected to a dryer 17 disposed in the machine room 20. The dryer 17 is connected to a capillary tube 18 that passes through the inside of the heat insulating material 1c. The capillary 18 is connected to the first relay pipe 10a inside the heat insulating material 1c. The suction pipe 11 passes through the inside of the heat insulating material 1 c and is connected to the suction side of the compressor 15 in the machine room 20. Further, the suction pipe 11 and the capillary pipe 18 are soldered to each other inside the heat insulating material 1c, and are configured to exchange heat between the pipes. The detailed arrangement of the first relay pipe 10a, the second relay pipe 10b, the cooler 5, the inlet pipe 9a, the accumulator 8, the outlet pipe 9b, and the suction pipe 11 will be described later.

The refrigeration cycle configured as described above operates as follows.
The refrigerant is compressed by the compressor 15 to become a high temperature and a high pressure, dissipates heat in the condensing pipe 16, and the temperature is lowered. And the refrigerant | coolant which passed the condensation pipe | tube 16 removes a water | moisture content in the dryer 17, expands in the capillary tube 18, and a pressure falls. The refrigerant that has passed through the capillary 18 passes through the first relay pipe 10 a and the second relay pipe 10 b and evaporates in the cooler 5. At this time, the air in the warehouse passing through the cooler 5 is cooled by removing heat as vaporization heat by the refrigerant flowing in the cooler 5. The cooled air is sent into the cabinet by the blower fan 14. The refrigerant that has passed through the cooler 5 is in a gas-liquid two-phase state and flows into the accumulator 8 via the inlet pipe 9a. The liquid phase refrigerant is stored in the accumulator 8, and the gas phase refrigerant passes through the suction pipe 11 and flows into the compressor 15.

Subsequently, the configuration of the cooler 5 and the vicinity thereof in the first embodiment will be described.
FIG. 3 is a front view of the cooler and its vicinity according to Embodiment 1 of the present invention, and FIG. 4 is a perspective view of the cooler and its vicinity according to Embodiment 1 of the present invention. 3 and 4, the first relay pipe 10a (pipe connected to the second relay pipe 10b) and the suction pipe 11 (pipe connected to the outlet pipe 9b) are not shown.
Note that FIG. 3 is an observation of the vicinity of the cooler 5 from the front side of the refrigerator 100.

  The cooler 5 includes a plurality of fins 7 and a heat transfer pipe 6 that passes through the fins 7. The plurality of fins 7 have a thin plate shape, are provided substantially vertically, and are stacked in the left-right direction at a predetermined interval. The heat transfer pipe 6 penetrates the plurality of fins 7 and is provided in a plurality of stages in the vertical direction. And the part which connects the heat-transfer piping 6 of several steps to an up-down direction is connected with piping of a hairpin shape. The heat transfer pipe 6 according to the first embodiment may be formed by bending a single pipe to form a substantially straight portion and a hairpin shape portion. Further, the heat transfer pipes 6 arranged at the uppermost stage and the lower stage thereof are formed shorter than the other heat transfer pipes 6 in the left-right direction. More specifically, the heat transfer pipes 6 arranged at the uppermost stage and the lower stage thereof are arranged with the left end on the right side of the left end of the other heat transfer pipes 6. As a result, a gap 12 is formed on the upper left side of the cooler 5. Moreover, the convex part 19 is provided in the installation part of the cooler 5 in the inner box 1b, and the cooler 5 is installed so that the hairpin part of the cooler 5 may be put on the convex part 19. In the first embodiment, the heat transfer pipes 6 are provided in two rows in the front-rear direction, but may be one row or three or more rows.

  In the cooler 5 configured as described above, the second relay pipe 10b is connected to the refrigerant inlet, and the inlet pipe 9a is connected to the refrigerant outlet. In the cooler 5 according to the first embodiment, the right end portion of the heat transfer pipe 6 arranged in the rear row at the top is a refrigerant inlet, and the second relay pipe 10b is connected to the end portion. Yes. The right end of the heat transfer pipe 6 arranged in the front row at the top is a refrigerant outlet, and the second relay pipe 10b is connected to the end. The inlet pipe 9 a is connected to the refrigerant inlet of the accumulator 8 provided above the cooler 5. An outlet pipe 9b is connected to the left side (refrigerant outlet) of the accumulator 8. And the accumulator 8 and the exit pipe | tube 9b are inclined and installed from the horizontal so that the refrigerant | coolant exit side of the accumulator 8 may turn down.

  The inlet pipe 9a and the heat transfer pipe 6 may be formed by bending the same pipe, or may be different pipes. In any case, the portion from the connecting portion with the accumulator 8 to the front of the hairpin portion is referred to as an inlet tube 9a. Similarly, the second relay pipe 10b and the heat transfer pipe 6 may be formed by bending the same pipe, or may be different pipes. In any case, the portion from the connection portion with the first relay tube 10a to the front of the hairpin portion is referred to as the second relay tube 10b.

  In FIG. 4, the outlet pipe 9b is a single pipe, and the second relay pipe 10b is also a single pipe. However, the outlet pipe 9b and the second relay pipe 10b each include a plurality of materials. You may be comprised with piping.

FIG. 5 is a perspective view of another example of the cooler and the vicinity thereof in Embodiment 1 of the present invention. Further, in FIG. 5, the first relay pipe 10a (pipe connected to the second relay pipe 10b) and the suction pipe 11 (pipe connected to the outlet pipe 9b) are not shown.
As shown in FIG. 5, the outlet pipe 9b includes an aluminum pipe part 9b1 connected to the accumulator 8, a copper pipe part 9b2 connected to the suction pipe 11, and a joint part that joins the aluminum pipe part 9b1 and the copper pipe part 9b2. 9b3. The second relay pipe 10b connects the aluminum pipe part 10b1 connected to the heat transfer pipe 6, the copper pipe part 10b2 connected to the first relay pipe 10a, and the aluminum pipe part 10b1 and the copper pipe part 10b2. It has a coupling portion 10b3.

  Note that the bonding portion 9b3 and the bonding portion 10b3 connect the aluminum tube and the copper tube by eutectic bonding, but if the copper and aluminum are in contact with each other, the aluminum corrodes due to the difference in ionization tendency. End up. Therefore, the cooler 5 is paint-coated. Moreover, the coupling | bond part 9b3 and the coupling | bond part 10b3 are covered with the heat contraction tube. In the example shown in FIG. 5, when the suction pipe 11 is, for example, a copper pipe, the connection between the suction pipe 11 and the outlet pipe 9b is welding between the copper pipes, so that the above-described corrosion problem can be suppressed. Similarly, when the first relay pipe 10a is, for example, a copper pipe, the first relay pipe 10a and the second relay pipe 10b are welded with each other, so that the above-described corrosion problem can be suppressed.

Next, the accumulator 8 will be described in detail.
FIG. 6 is a side sectional view of the accumulator according to the first embodiment of the present invention. As shown in FIG. 6, the refrigerant inflow side end (refrigerant inlet) of the outlet pipe 9 b is inserted into the accumulator 8 to the vicinity of the refrigerant inlet of the accumulator 8. More specifically, when the accumulator 8 is tilted, the refrigerant inflow side end portion of the outlet pipe 9b (refrigerant inlet) so that the refrigerant inlet of the outlet pipe 9b is located above the center position in the vertical direction of the accumulator. ) Is inserted into the accumulator 8. Further, the accumulator 8 is provided so as to be inclined from the horizontal so that the refrigerant outlet side is downward. Thereby, the refrigerant | coolant inflow port of the exit pipe | tube 9b will be located above rather than the case where the accumulator 8 is made substantially horizontal.

  Here, the liquid refrigerant in the accumulator 8 flows into the outlet pipe 9b when the liquid level of the refrigerant reaches the refrigerant inlet portion of the outlet pipe 9b. For this reason, the accumulator 8 in this Embodiment 1 can store more liquid refrigerant because the refrigerant | coolant inflow port of the exit pipe | tube 9b is located above rather than the case where it installs substantially horizontal. The accumulator 8 and the outlet pipe 9b are not limited to the above-described configuration, and may be installed so that the refrigerant inlet of the outlet pipe 9b is located above the central position in the vertical direction of the accumulator 8. Good. For example, the accumulator 8 and the outlet pipe 9b may be installed substantially horizontally, and the outlet pipe 9b may be bent upward inside the accumulator 8.

Next, the space | gap part 12 and the components arrange | positioned there are demonstrated in detail.
FIG. 7 is an enlarged front view of the gap portion of the cooler in Embodiment 1 of the present invention, and FIG. 8 is an enlarged side view of the gap portion of the cooler in Embodiment 1 of the present invention. FIG. 8 is a drawing of the cooler shown in FIG. 7 observed from the left side.
As described above, the gap 12 is formed on the upper left side of the cooler 5. That is, the right end portion of the gap portion 12 is on a virtual extension line drawn vertically from the left end portion of the heat transfer pipe 6 formed short. Moreover, the left end part of the space | gap part 12 becomes on the virtual extension line pulled up and down from the left end part of the heat transfer piping 6 which is not formed short. The upper end of the gap 12 is a virtual extension line drawn leftward from the upper end of the accumulator 8. Moreover, the lower end of the gap portion 12 is an upper portion of the heat transfer pipe 6 arranged at the top of the heat transfer pipes 6 that are not formed short. Moreover, the front-back direction edge part of the space | gap part 12 becomes on the virtual extension line pulled in the up-down direction from the front-back direction edge part of the fin 7 of the cooler 5. FIG.

  The second relay pipe 10b and the outlet pipe 9b are bent downward in the gap portion 12, for example, at a substantially right angle. The first relay pipe 10a is welded to the end of the second relay pipe 10b, and the suction pipe 11 is welded to the end of the outlet pipe 9b. As shown in FIG. 8, a U-shaped portion 10a1 having a curved lower portion is formed at the end of the first relay tube 10a on the side connected to the second relay tube 10b. The first relay pipe 10a is inserted into the heat insulating box 1 at a portion (a portion on the upstream side of the refrigerant flow) excluding the U-shaped portion 10a1. Further, a U-shaped portion 11a having a curved lower portion is formed at the end of the suction pipe 11 on the side connected to the outlet pipe 9b. The suction pipe 11 is inserted into the heat insulating box 1 at a portion (a portion on the downstream side of the refrigerant flow) excluding the U-shaped portion 11a.

  The reason why the first relay pipe 10a has the U-shaped part 10a1 and the suction pipe 11 has the U-shaped part 11a will be described. In the manufacturing operation of the refrigerator 100, when the second relay pipe 10b is welded to the first relay pipe 10a and when the outlet pipe 9b is welded to the suction pipe 11, the first relay pipe 10a and the suction pipe 11 are first connected. It is installed in the state inserted in the heat insulation box 1. At this time, since the first relay pipe 10a has the U-shaped portion 10a1, the connection portion with the second relay pipe 10b faces upward. Similarly, since the suction pipe 11 has a U-shaped portion 11a, the connection portion with the outlet pipe 9b faces upward. Thus, the second relay pipe 10b can be connected and welded from above the first relay pipe 10a, and the outlet pipe 9b can be connected and welded from above the suction pipe 11. For this reason, the effect that welding work becomes easy can be produced.

  At the time of welding connection between the first relay pipe 10a and the suction pipe 11, an ultrasonic welding machine is put into the gap portion and welded. For this reason, it is desirable to design the cooler 5 so that the space 12 becomes a sufficient space when the ultrasonic welding machine is inserted as well as the first relay pipe 10a and the suction pipe 11. Thereby, the effect that there is no influence of a burn etc. on the inner box 1b can be produced.

  The U-shaped part 10a1 of the first relay pipe 10a and the U-shaped part 11a of the suction pipe 11 are arranged so as to be accommodated in the gap part 12 in the vertical direction and the horizontal direction. Further, the U-shaped portions 10 a 1 and 11 a of the first relay pipe 10 a and the suction pipe 11 are arranged so that at least a part of the U-shaped portions 10 a 1 and 11 a is contained in the gap portion 12 in the front-rear direction. For this reason, the space which the cooler 5, the accumulator, and the piping connected to these occupy can be reduced not only in the vertical direction but also in the horizontal direction and the front-rear direction.

  As described above, the refrigerator 100 according to the first embodiment is installed so that the refrigerant inlet of the outlet pipe 9b is located above the central position in the vertical direction of the accumulator 8, so that the amount of liquid reservoir is secured. Even if the accumulator 8 is not enlarged, the amount of liquid that can be stored increases.

  Moreover, the connection part of the outlet pipe 9b arrange | positioned above the cooler 5 is arrange | positioned at the space | gap part 12 formed by shortening the heat-transfer piping 6 of the uppermost stage and the lower stage at least. For this reason, it is not necessary to bend the outlet pipe 9b upward, and a space-saving configuration can be achieved. Further, in the refrigerator 100 according to the first embodiment in which the second relay pipe 10b is installed above the cooler 5, the connecting portion between the first relay pipe 10a and the second relay pipe 10a is also the gap portion 12. It is placed inside. For this reason, even when the 2nd relay pipe 10b is installed above the cooler 5, it can be set as a space-saving structure. Thereby, the capacity | capacitance of the refrigerator 100 increases and it can reduce the influence which it has on arrangement | positioning of other components. Note that the space saving configuration as described above does not affect the cooling power of the cooler 5 in the refrigeration cycle of the refrigerator 100.

  Moreover, since the 1st relay pipe 10a has the U-shaped part 10a1, the connection part with the 2nd relay pipe 10b has faced upwards. Similarly, since the suction pipe 11 has a U-shaped portion 11a, the connection portion with the outlet pipe 9b faces upward. Thus, the second relay pipe 10b is connected from above the first relay pipe 10a, and the outlet pipe 9b is connected from above the suction pipe 11 and can be welded in that state. For this reason, the effect that welding work becomes easy can be produced.

Embodiment 2. FIG.
When the partition wall 2 is disposed so as to cover the upper portion of the accumulator 8, for example, the refrigerator 100 may be configured as follows. In addition, about the structure and function of the refrigerator in this Embodiment 2, the part which is not demonstrated especially shall be the same as Embodiment 1. FIG.

FIG. 9 is a front view of the cooler and the vicinity thereof in the second embodiment of the present invention.
As shown in FIG. 9, the partition wall 2 has a ventilation opening 2 a near the center in the left-right direction. A recess 2b having a width substantially the same as that of the cooler 5 is formed in the lower part of the partition wall 2 and around the vent hole 2a. In addition, an inclined portion 2c that extends toward the lower portion is formed on the outer periphery of the concave portion 2b. By forming the inclined portion 2c, the flow of air flowing from the cooler 5 to the blower fan 14 can be made smooth.

  The cooler 5 and the accumulator 8 are arranged so that at least a part of the accumulator 8 is accommodated in the recess 2b formed as described above. In addition, the shape of the recessed part 2b is not restricted to the shape shown in FIG. 9, What is necessary is just to determine suitably with the magnitude | size or shape, etc. of the cooler 5 and an accumulator.

  As described above, the formation of the recess 2b in the partition wall 2 increases the space for installing the cooler 5, the accumulator 8, and the like. Thereby, since the thickness of the heat insulation box 1 of the cooler 5 lower part can be made thick, for example, the heat insulation effect can be heightened. Further, for example, the cooling performance can be improved by increasing the size of the cooler 5 (for example, by increasing the size of the fins 7 or increasing the number of the heat transfer pipes 6).

  DESCRIPTION OF SYMBOLS 1 Heat insulation box body, 1a outer box, 1b inner box, 1c heat insulating material, 2 partition wall, 2a vent, 2b recessed part, 2c inclined part, 3 refrigerator compartment, 4 freezer room, 5 cooler, 6 heat transfer piping, 7 Fin, 8 accumulator, 9a inlet pipe, 9b outlet pipe, 9b1 aluminum pipe part, 9b2 copper pipe part, 9b3 joint part, 10a first relay pipe, 10a1 U-shaped part, 10b second relay pipe, 10b1 aluminum pipe Part, 10b2 copper pipe part, 10b3 joint part, 11 suction pipe, 11a U-shaped part, 12 gap part, 13 defrosting heater, 14 blower fan, 15 compressor, 16 condensing pipe, 17 dryer, 18 capillary, 19 convex Part, 20 machine room, 100 refrigerator.

Claims (5)

A compressor for compressing the refrigerant;
A condensing part for condensing the refrigerant,
An expansion device for expanding the refrigerant;
A cooler that has a plurality of fins laminated through a predetermined interval and a heat transfer pipe that penetrates in the lamination direction of the fins, and cools the air passing therethrough;
A relay pipe connecting the expansion device and the heat transfer pipe of the cooler;
An accumulator which is provided between the heat transfer pipe and the compressor and stores liquid refrigerant;
An outlet pipe connected to the refrigerant outlet of the accumulator and having a refrigerant inlet inserted into the accumulator;
A suction pipe connecting the outlet pipe and the compressor;
A refrigerator comprising:
The accumulator is installed such that the refrigerant inlet of the outlet pipe is located above a central position in the vertical direction of the accumulator,
The accumulator and the outlet pipe are disposed above the cooler,
The heat transfer pipe is provided in a plurality of stages in the vertical direction,
At least the uppermost stage and the lower heat transfer pipe are formed shorter than the other heat transfer pipes, and a gap is formed in the upper part of the cooler,
A refrigerator in which a connection portion between the suction pipe and the outlet pipe is disposed in the gap. The relay pipe is
A first relay pipe having one end connected to the expansion device;
A second relay pipe having one end connected to the heat transfer pipe and the other end connected to the other end of the first relay pipe;
The second relay pipe is installed above the cooler,
The refrigerator according to claim 1, wherein a connection portion between the first relay pipe and the second relay pipe is disposed in the gap. An interior is partitioned by at least one partition wall, and includes a housing in which a plurality of storage chambers are formed.
One of the partition walls is arranged so as to cover the top of the accumulator,
A recess is formed on the bottom surface of the partition wall,
The refrigerator according to claim 1 or 2, wherein at least a part of the accumulator is disposed in the recess. At the end of the suction pipe connected to the outlet pipe, a U-shaped portion having a curved lower part is formed,
4. The outlet pipe and the suction pipe are connected by connecting ends of the outlet pipe so that the outlet pipe is an upper part and the suction pipe is a lower part. The refrigerator as described in any one. The end of the first relay pipe on the side connected to the second relay pipe is formed with a U-shaped part with a curved lower part,
The first relay pipe and the second relay pipe are connected by connecting the end portions so that the second relay pipe is the upper part and the first relay pipe is the lower part. The refrigerator according to any one of claim 2, claim 3 dependent on claim 2, and claim 4 dependent on claim 2.

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