JP2003075048A - Electric refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a simple cold air flow as well as efficiently eliminating irregularity of temperature in a refrigeration compartment. SOLUTION: In the main body R of an electric refrigerator, at least one heat exchanger 1 disposed in a rear face side of a freezing compartment 400 is used for cooling the whole compartment space. A cold air outlet 501 is provided in the front face side of a refrigeration compartment 100. A cold air return port 120 is provided at least in a rear face wall of the compartment 100. The cold air produced by the heat exchanger is made to flow from the front face side in the compartment 100 to the rear side in the direction of depth of the compartment 100.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electric refrigerator,
More specifically, the present invention relates to a technique for eliminating the temperature unevenness in the refrigerating compartment and improving the food storage state.

[0002]

2. Description of the Related Art In many cases, electric refrigerators are equipped with several storage compartments such as a refrigerator compartment, a vegetable storage compartment and a freezer compartment set in different temperature zones. To explain one example with reference to FIG. 11, in an electric refrigerator in recent years, a refrigerating room 100, which is most frequently used from an ergonomic point of view, is placed on the uppermost stage, and a specific low temperature room 20 such as a chilled room is placed on the lower stage.
0, vegetable room 300, and freezer room 400 are arranged.

Cold air is generated by a heat exchanger (evaporator) 1 connected to a compressor C, and the cool air is supplied to each of the storage chambers 100 to 400 by a blower 2 through a duct 3. The housing of the refrigerator main body R is composed of an inner box 4 and an outer box 5 assembled with a heat insulating material sandwiched between them, and a duct cover that forms a duct 3 between the inner box 4 and the inner box 4 on the rear side of the interior of the refrigerator. 9 is provided, and the heat exchanger 1 and the blower 2 are arranged in the duct 3 thereof.

Since the duct 3 is provided on the back side of the refrigerator body R, the refrigerating room 100 and the specific low temperature room 20
The cold air is supplied to 0 and the like from the back surface thereof, and is returned to the suction side of the heat exchanger 1 through a predetermined cold air return duct.

In this example, the cold air supplied to the refrigerator compartment 100 is guided to the vegetable compartment 300 through the bypass pipe 6 and then returned to the suction side of the heat exchanger 1. When the vegetable compartment 300 is placed under the refrigerating compartment 100, ventilation holes are provided in the partition walls of the refrigerating compartment 100 and the vegetable compartment 300 so that cold air is supplied from the refrigerating compartment 100 to the vegetable compartment 300.

[0006]

As described above, the conventional electric refrigerator has the following problems because it adopts the back-blowing system for supplying the cool air from the back side of the storage chamber. That is, as for the refrigerating compartment 100, in many cases, the shelves are packed with foods, which impedes the cooling air blowing, and the front side of the refrigerating compartment 100 is less likely to be cooled.

Not only that, the refrigerating compartment 100 is kept almost closed by the door D, but heat always enters through the gasket portion, and the door D of the refrigerating compartment 100 is frequently opened and closed. Especially, the front side of the refrigerating room 100 has a large amount of heat coming and going. Because of this, the refrigerator compartment 10
No temperature unevenness occurred between the back side and the front side of 0.

Although the refrigerating compartment 100 requires the most amount of cold air among the storage compartments, the heat exchanger 1 is arranged below the duct 3 because of the relationship with the compressor C, and the cool air is kept in the refrigerating compartment 100. Due to the long duct path leading to
In the process of moving, the temperature rises due to heat exchange with the outside,
Cold air loss due to this is also large.

[0009]

According to the present invention, in particular, it is possible to eliminate the temperature unevenness in the refrigerating compartment, reduce the loss of cold air, and efficiently cool the stored food. Therefore, the present invention has several features described below.

First, according to the present invention, a refrigerating compartment is arranged in an upper part, a freezing compartment is arranged in a lower part, and a part of the cool air generated by a heat exchanger arranged on the back side of the freezing compartment is blown by the blower. It is sent to the upper surface side of the refrigerating compartment through the rear side of the refrigerating compartment, and is made to flow from the front side of the refrigerating compartment toward the depth rear thereof, and the rest of the cool air is supplied to the freezing compartment. It features.

In this case, basically, the present invention can be applied even if the refrigerating compartment is arranged in the middle stage as long as the freezing compartment is arranged at the lower part. That is, when the refrigerating compartment is arranged, for example, in the middle of the refrigerating compartment main body, the duct may be drawn into the partition wall to blow out cool air from the front surface of the refrigerating compartment.

In a more preferred embodiment of the present invention, the compartment is divided into a plurality of spaces by a partition wall, the uppermost space is assigned to a vegetable compartment and a refrigerating room including a specific low temperature compartment, and the lower space is When it is a freezing room and each room is provided with a door, a heat exchanger and a blower are arranged adjacent to the back side of the freezing room, and the storage room has a rear side to a top side of the storage room. A duct extending toward the upper side of the duct is provided with a cool air outlet opening at the upper end on the front side of the door of the refrigerating compartment, and the back wall of the refrigerating compartment is provided with Since the cold air return port communicating with the duct is formed, a part of the cold air generated by the heat exchanger is flowed from the front side facing the door in the refrigerating chamber toward the depth rear thereof, Eliminating temperature unevenness, all Cooling speed is up.

In this case, the inside of the duct is divided into a cold air feed duct for sending cold air to the cold air outlet and a cold air return duct for returning the cold air in the refrigerating chamber to the heat exchanger through the cold air return port. As a result, the cold air generated by the heat exchanger arranged on the back side of the freezing compartment can be efficiently carried to the upper surface of the refrigerating compartment.

As a more preferred embodiment of the duct, the cold air feed duct and the cold air return duct are divided in parallel along the height direction of the storage chamber, and the cold air feed duct is formed at the center of the front surface of the duct. It is preferable that the cold air return ducts are provided on both left and right sides of the cold air feed duct.

Further, the cold air feeding duct and the cold air returning duct are divided in parallel along the height direction of the storage chamber, and the cold air returning duct is formed at the center of the front surface of the duct, and the cold air feeding duct is formed. Are preferably provided on both the left and right sides of the cold air return duct, and the cold air return port can be widened for each stage, so that the cool air can flow evenly.

As another mode other than this, the cold air feed duct and the cold air return duct are divided in parallel along the depth direction of the storage chamber, and the cold air return duct is located on the front side when viewed from the storage chamber. Is formed, the cold air feed duct may be formed on the back side of the cold air return duct, according to this, not only the duct structure can be simple, the cold air return port on the back side can be evenly arranged, The temperature unevenness in the compartment is further suppressed.

The rear end side of the cool air return duct is preferably provided adjacent to the back side of the heat exchanger, which makes it possible to make the frost on the heat exchanger uniform. The heat exchange rate becomes uniform.

Since the rear end of the cold air return duct is positioned below the lower end surface of the heat exchanger, the return cold air from the refrigerating room and the return cold air from the freezing room are mixed thoroughly. The temperature of the air introduced into the heat exchanger can be stabilized.

Since the rear end of the cool air return duct is located on the same plane as the lower end surface of the heat exchanger, turbulent flow generated on the lower side (intake side) of the heat exchanger is reduced. You can

A rectifying plate for rectifying the flow of the cold air flowing in the cold air return duct is provided in the cold air return duct, so that the flow of the return cold air is further stabilized and the thermal efficiency in the heat exchanger is improved. In addition, the frost can be made uniform and the duct can be reinforced.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment of the present invention will be described with reference to FIGS. 1 is a sectional view of the refrigerator body R of the electric refrigerator according to the present invention on the cold air sending side, and FIG. 2 is a sectional view of the refrigerator body R on the cold air returning side.

According to this, in the refrigerator body R, the refrigerating room 100, the specific low temperature room 200, and the vegetable room 300 are arranged in this order from the top.
A refrigerating room 400 is arranged. In addition, this first
In the embodiment, since the specific low temperature chamber 200 is assigned to a part of the refrigerating room 100, the specific low temperature chamber 200
Doors D are attached to the respective storage rooms except for.

The refrigerator body R includes an inner box 4 and an outer box 5,
In the meantime, the foam insulating material 7 is filled. Freezer 40
0 is a room independent of other storage rooms via a heat insulating partition wall 410, and a heat exchanger (evaporator) 1 and a blower 2 are respectively arranged behind the freezing room 400, and further heat A compressor C is arranged below the exchanger 1.

The refrigerator main body R of the present invention is a so-called 1-eva type electric refrigerator having one heat exchanger 1 for each refrigerator main body R, and a part of the cold air generated by the heat exchanger 1 is The refrigerating compartment 100 (including the specific low temperature compartment 200 and the vegetable compartment 300) is supplied, and the rest of the cool air is supplied to the freezing compartment 400, so that the refrigerating compartment 100 and the freezing compartment 400 are simultaneously cooled. .

Inside the refrigerator main body R, a duct cover 50 that forms a duct 500 with the inner box 4 is provided.
In the present invention, the duct cover 50 is continuously formed from the rear surface side to the upper surface of the refrigerator main body R, and the lower end side thereof extends to the lower end side of the heat exchanger 1 in the freezer compartment 400.

In this first embodiment, the duct 500
Is a rear duct portion 510 located on the rear side of the refrigerating compartment 100 including the specific low temperature compartment 200, and an upper surface duct portion 530 extending from above the rear duct portion 510 to the front side facing the door D of the refrigerating compartment 100. And a cold air outlet 501 is formed at the end of the upper surface duct portion 530.

A heat exchanger (evaporator) 1 and a blower 2 are provided in the duct 500. In the first embodiment, the heat exchanger 1 and the blower 2 are provided in the freezer compartment 400.
Is provided on the rear side of the
Near the boundary between the upper duct part 530 and the upper duct part 530, that is, the refrigerator compartment
A cross flow fan 21 for raising the cool air introduced into the rear surface duct portion 510 to the upper surface duct portion 530 is provided on the upper rear surface of 00.

The heat exchanger 1 is connected to the compressor C via a pipe (not shown), and the heat insulating material 12 is attached to the duct cover 50 side of the heat exchanger 1. In this embodiment, the heat insulating material 12 looks as if the lower end side of the duct cover 50 is integrated with the heat insulating material in the drawing, but in reality, the heat insulating material 12 is provided between the heat exchanger 1 and the duct cover 50. It is installed.

According to the first embodiment, the refrigerator compartment 100
Inside is four storage units 1 with four shelf boards 101-104.
It is divided into 11 to 114. The lowest shelf board 104 is used as a top board of the specific low temperature chamber 200. A cold air return port 1 communicating with a duct 500 on the back wall of the refrigerator compartment 100.
20 are provided. In addition, each storage part 111-114
The back wall of the refrigerating compartment 100 including the duct cover 5 is substantially
It is formed by 0.

According to the first embodiment, as shown in FIG. 3, the duct cover 50 has partition walls 51, 52 (rectifying plates) parallel to each other along the height direction of the refrigerator main body R. Two pieces are installed upright. As a result, the space between the duct cover 50 and the inner box 4 is 3 parallel to each other in the height direction.
One dedicated duct 41-43 is formed.

In the first embodiment, the central exclusive duct 42 is the cold air feed duct 42 for sending the cold air generated in the heat exchanger 1 to the upper surface duct portion 530, and the center of the cold air feed duct 42. The lower part, that is, the upper part on the discharge side of the heat exchanger 1, is provided with a cool air introduction port 421 for introducing the cool air sent out by the blower 2 into the cool air sending duct 42.

As shown in FIG. 1, cold air inlet 421
A damper 422 that limits the amount of cold air flowing into the opening
Is provided, and the temperature inside the compartment can be adjusted. In this embodiment, the damper 422 may be automatically controlled or may be manually controlled by a control means (not shown) provided in the compartment. There is no particular limitation on this point.

The dedicated ducts 41 and 43 on both the left and right sides of the partition walls 51 and 52 of the cold air feeding duct 42 sandwich the refrigerating chamber 10.
0 and the vegetable compartment 300 is a cold air return duct 43 for returning the cold air to the heat exchanger 1 again, and a part of the cold air return duct 43 passes through the cold air return port 120.
It communicates with 00.

In this embodiment, the exclusive ducts 41 to 41
The partition walls 51, 52 for partitioning 43 are made of a heat insulating resin or the like, and are ribs that also serve as reinforcement of the duct 50. Further, the partition walls 51 and 52 also serve as a current plate for allowing the cool air flowing in the dedicated ducts 41 to 43 to flow smoothly.

By the way, the cold air in the vegetable compartment 300 passes through the inside of the refrigerating compartment 100 and is guided from the lower side of the front surface thereof. At this time, there is a possibility that the odor unique to the refrigerating compartment 100 or the specific low temperature compartment 200 is included. There is. Therefore, the refrigerator compartment 100
The deodorizing means may be arranged so as to face the cold air passage extending from to the vegetable compartment 300. As the deodorizing means, a deodorizing agent may be attached or, for example, a honeycomb-shaped deodorizing agent may be fitted into the cold air passage.

In the first embodiment, the heat exchanger 1 also supplies cold air to the freezer compartment 400. As shown in FIG. 1, a freezing compartment duct cover 420 is provided on the rear surface of the freezing compartment 400, and the freezing compartment duct cover 420 is substantially a back wall of the freezing compartment 400. The freezing compartment duct cover 420 is provided with two upper and lower cold air outlets 421 and 421 for blowing cold air into the freezing compartment 400.

The lower side of the freezer compartment duct cover 420 is inclined along the inner wall of the inner box 4 of the freezer compartment 400, the cold air return port 422 is provided at the tip thereof, and the heat exchanger 1 is provided at the other end side.
Is connected to the lower side, that is, the suction side.

The operation of the cool air in the refrigerating compartment 100 will be described. The cool air produced in the heat exchanger 1 enters the cool air feeding duct 42 from the cool air introducing port 521 by the operation of the blower 2 and the rear surface of the refrigerating compartment 100. It is lifted up to the upper surface duct part 530 by the cross flow fan 21 at the upper part, and blows out to the front side of the refrigerating room 100 from the cold air outlet 501 provided at the tip.

The cold air blown into the refrigerating chamber 100 reaches the back side through the storage parts 111 to 114 and is returned to the cool air return ducts 41 and 43 through the cold air return port 120. The cold air that has entered the cold air return ducts 41 and 43 descends on the back side in the order of the refrigerating compartment 100, the vegetable compartment, and the freezer compartment 400, and is mixed with the cool air from the freezer compartment 400 at the bottom of the heat exchanger 1, It is introduced again into the suction side of the heat exchanger 1.

According to this cold air blowing method, the front side of the refrigerating compartment 100 where the temperature is most likely to rise is cooled first, so that even if food is packed in each of the storage parts 111 to 114, the inside of the refrigerating compartment 100 is cooled. The temperature of the whole can be made uniform.

In the specific low temperature chamber 200, cold air is supplied from the front cold air supply port 201, but since the cold air return port 202 is formed in the back wall, most of the cold air circulates in the specific low temperature chamber 200. After that, from the back wall side, vegetable room 3
Set back to 00.

Unlike the first embodiment, when the refrigerating compartment 100 is arranged, for example, in the middle of the refrigerator main body R, a duct is drawn into the partition wall, and the refrigerating compartment is operated in the same manner as described above. Cool air may be blown out from the front side of 100 and returned from the back side.

In the vegetable compartment 300, cold air that has passed through the refrigerator compartment 100 is supplied from the front side without circulating through the storage sections 111 to 114 and circulated, and then the cold air return ducts 41 and 43 are supplied from the cold air return port 301 on the back wall side. Returned to. If the vegetable compartment 300 is divided into a low-temperature vegetable compartment and a high-temperature vegetable compartment and the temperature is controlled more accurately, the refrigerator compartment 100 and the vegetable compartment 300 are partitioned from each other, and separate ducts are provided respectively. The set temperature can be set quickly and accurately.

Since most of the cool air in each room is returned to the heat exchanger 1 via the cool air return ducts 41 and 43 as described above, a deodorant (not shown) is provided on the suction side of the heat exchanger 1.
By providing the above, it is possible to effectively deodorize the cool air circulating in the refrigerator. The deodorant provided on the suction side of the heat exchanger 1 may be the same as the above deodorant, and preferably contains an antibacterial agent.

Next, another embodiment of the present invention will be described with reference to FIGS. 4 to 10. Parts which may be the same as or considered to be the same as the constituent elements of the first embodiment are designated by the same reference numerals. To use.

First, in the second embodiment of FIGS. 4 to 6, the main difference from the first embodiment is the usage of the dedicated ducts 41 to 43 in the duct cover 50.
That is, in the second embodiment, the dedicated duct 41
3 to 43 along the height direction as in the first embodiment.
The dedicated duct 42 in the center is a cold air return duct 42 for returning the chilled cold air, and the dedicated ducts 41, 43 on both left and right sides are the cold air feed ducts 41 for supplying the generated cold air. , 43.

In the second embodiment, the cold air feed ducts 41 and 43 are provided with the dedicated ducts on the left and right sides, respectively.
1, 431 are provided respectively. In the second embodiment, the cool air generated by the heat exchanger 1 is once introduced into the cool air introducing unit 44 having the cool air introducing port 441 through the blower 2, and then the cool air communicating with the cool air introducing unit 44 is performed. It is carried from the outlets 411, 431 to the cold air feeding ducts 41, 43.

In the second embodiment, the cold air feeding duct 4
The cold air conveyed to the upper surface duct portion 530 by the cooling devices 1, 43 is mixed again by the upper surface duct portion 43.
1, 43 may be extended and two independent cold air outlets 501 may be provided.

As shown in FIG. 4, cold air inlet 441 is provided.
A damper 442 that limits the amount of cold air flowing into the opening of the
Is provided, and the temperature inside the compartment can be adjusted. Also in the second embodiment, the damper 442 may be automatically controlled or may be manually controlled by a control means (not shown) provided in the compartment. There is no particular limitation on this point.

Next, a third embodiment shown in FIGS. 7 to 9 will be described. In the third embodiment, unlike the first and second embodiments, two cold air feed ducts 41 and two cold air return ducts 42 are provided in parallel along the depth direction of the refrigerating compartment 100.

That is, in the third embodiment, the cool air return duct 42 is formed between the duct cover 50 and the inner box 4 on the front side when viewed from the inside of the compartment via the partition wall 51 made of a heat insulating material. The cold air feeding duct 41 is formed on the back side thereof.

In the cold air feeding duct 41 of the third embodiment, the upper end is connected to the rear end of the upper surface duct portion 530, the cross flow fan 21 is housed in the corner portion, and the lower end side is the heat exchanger 1 and the blower. 2 communicates with a cold air introduction port 411 provided at the upper part of Also in this third embodiment,
A damper 412 for limiting the inflow amount of cold air is provided at the opening of the cold air inlet 441. Also in the third embodiment, there are no particular restrictions on the specifications of the damper 412.

The cold air return duct 42 of the third embodiment extends along the back wall sides of the refrigerating compartment 100 and the vegetable compartment 300, and communicates with the interior of the compartment via the cold air returning ports 120 and 301. The lower end side is the back side of the heat exchanger 1 (the inner box 4 side)
And is guided to the suction side of the heat exchanger 1.

In each of the above embodiments, the lower end of the duct cover 50 and the lower end surface of the heat exchanger 1 are formed on the same plane. However, as shown in FIG. The lower end of the heat exchanger 1 may project slightly below the lower end surface of the heat exchanger 1, and according to this, the return cool air from the refrigerating chamber 100 side and the return cool air from the freezing chamber 400 side having a temperature difference may be provided. Can be uniformly mixed, and by keeping the temperature of the air inserted into the heat exchanger 1 constant, frost formation can be made uniform.

[0055]

As described above, according to the present invention,
By allowing the cool air generated by the heat exchanger to flow from the front side of the refrigerating room toward the rear of the depth, it is possible to effectively eliminate temperature unevenness in the refrigerating room and reduce cold air loss for storage. Food can be cooled efficiently.

Further, by appropriately dividing the duct formed between the duct cover and the inner box into the cool air return duct and the cool air feed duct, the duct structure can be simplified, resulting in heat loss. It can be suppressed.

Further, by arranging the lower end side of the duct cover on the same plane as the lower end surface of the heat exchanger or below it, the temperature difference from the return air from the freezing chamber is reduced, and stable heat is generated. Exchange efficiency can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a cold air feeding side of an electric refrigerator according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a cold air return side of the electric refrigerator according to the first embodiment of the present invention.

FIG. 3 is a perspective view of the duct cover according to the first embodiment.

FIG. 4 is a sectional view showing a cold air return side of an electric refrigerator according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a cold air feeding side of an electric refrigerator according to a second embodiment of the present invention.

FIG. 6 is a perspective view of the duct cover according to the second embodiment.

FIG. 7 is a cross-sectional view showing a cold air sending side of an electric refrigerator according to a third embodiment of the present invention.

FIG. 8 is a sectional view showing a cold air return side of an electric refrigerator according to a third embodiment of the present invention.

FIG. 9 is a front view of the duct cover according to the third embodiment.

FIG. 10 is a partially enlarged view showing another aspect of the electric refrigerator of the present invention.

FIG. 11 is a cross-sectional view of a conventional electric refrigerator.

[Explanation of symbols]

1 heat exchanger 2 blower 21 Cross Flow Fan 4 inner box 5 outer box 7 insulation 41-43 Dedicated duct 50 duct cover 51,52 partition walls 100 cold room 101-104 shelf board 111-114 storage 120 Cold air return port 200 Specific low temperature room 201 Cold air supply port 202 Cold air return port 300 vegetable rooms 301 Cold air return port 400 freezer 410 Insulation partition wall 420 Freezer Duct Cover 421 Cold air outlet 422 Cold air return port 500 duct 501 cold air outlet 510 Rear duct part 530 Top duct part C compressor D door R refrigerator body

Claims (11)

[Claims] 1. A refrigerating compartment is arranged at an upper part, a freezing compartment is arranged at a lower part, and a part of cold air generated by a heat exchanger arranged on the back side of the freezing compartment is blown by a rear surface of the refrigerating compartment. Side, it is sent to the upper surface side of the refrigerating compartment and is made to flow from the front side of the refrigerating compartment toward the rear of the depth thereof, and the rest of the cold air is supplied to the freezing compartment. refrigerator. 2. The compartment is divided into a plurality of spaces by a partition wall, the uppermost space is assigned to a refrigerating room including a vegetable compartment and a specific low temperature compartment, and the lower space is a freezing compartment. In an electric refrigerator having a door provided in a room, a heat exchanger and a blower are arranged adjacent to the back side of the freezing room, and a duct extending from the back side to the top side of the same room in the storage room. Is formed, and at the one end on the upper surface side of the duct, there is provided a cool air outlet opening at the upper part of the front surface on the door side of the refrigerating compartment, and on the back wall of the refrigerating compartment, there is cool air communicating with the duct. An electric refrigerator characterized in that a return port is formed, and a part of the cold air generated by the heat exchanger is made to flow from the front side facing the door in the refrigerating chamber toward the depth rear side thereof. 3. The inside of the duct is divided into a cold air feed duct for sending cold air to the cold air outlet and a cold air return duct for returning the cold air in the refrigerating chamber to the heat exchanger via the cold air return port. The electric refrigerator according to claim 2. 4. The cold air feed duct and the cold air return duct are divided in parallel along the height direction of the storage chamber, the cold air feed duct is formed in the center of the front surface of the duct, and the cold air return duct is The electric refrigerator according to claim 3, wherein the electric refrigerator is provided on both left and right sides of the cold air feeding duct. 5. The cold air feed duct and the cold air return duct are divided in parallel along the height direction of the storage chamber, and the cold air return duct is formed at the center of the front surface of the duct. The electric refrigerator according to claim 3, wherein the electric refrigerator is provided on both left and right sides of the cold air return duct. 6. The cold air return duct and the cold air return duct are divided in parallel along the depth direction of the storage chamber, and the cold air return duct is formed on the front side when viewed from the storage chamber, and the cold air return duct is formed. The electric refrigerator according to claim 3, wherein the cold air feeding duct is formed on the inner side of the duct. 7. The electric refrigerator according to claim 3, wherein a rear end side of the cold air return duct is provided adjacent to a rear surface side of the heat exchanger. 8. The electric refrigerator according to claim 3, wherein a rear end of the cold air return duct is located below a lower end surface of the heat exchanger. 9. The rear end of the cool air return duct is flush with the lower end surface of the heat exchanger.
The electric refrigerator according to any one of 1. 10. The electric refrigerator according to claim 3, wherein a rectifying plate that rectifies a flow of the cold air flowing in the cold air return duct is provided in the cold air return duct. 11. A heat insulating material is interposed between the cold air return duct and the heat exchanger.
The electric refrigerator according to any one of 1.