CN214537004U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, it includes between first storing room and second storing room, and first storing room has cryrogenic mode and non-cryrogenic mode, and second storing room has non-cryrogenic mode, and refrigerator still includes first return air wind channel, first air door and first forced draught blower, and first return air wind channel communicates between room and second storing room through first air door between first storing to carry the return air of first storing room to in the second storing room. When the first storage chamber is set to be in the deep cooling mode and the second storage chamber needs to be refrigerated, the first air door and the first air blower are configured to be controlled to be opened, and the first air blower is configured to enable the return air of the first storage chamber to enter the second storage chamber through the first return air duct, so that the return air of the first storage chamber is used for providing cold energy for the second storage chamber, and waste of the cold energy is reduced.

Description

Refrigerator with a door

Technical Field

The utility model relates to a cold-stored frozen storage technical field especially relates to a refrigerator.

Background

The refrigerator generally has a plurality of temperature areas, can provide different food material storage demands for users, and the existing refrigerator with different temperature areas has the condition that the cold energy of a cold temperature area is directly returned to an evaporator, so that the cold energy is wasted, particularly for the refrigerator with a deep cooling space, the temperature of the deep cooling space can reach minus 40 ℃ or even lower, and if the cold energy is directly returned to the evaporator, the cold energy is wasted more seriously.

Disclosure of Invention

An object of the utility model is to provide a solve the refrigerator of above-mentioned problem at least.

A further object of the present invention is to improve refrigeration efficiency.

Particularly, the utility model provides a refrigerator, it includes:

the refrigerator comprises a refrigerator body, a first storage chamber and a second storage chamber are limited in the refrigerator body, the first storage chamber has a deep cooling mode and a non-deep cooling mode, the second storage chamber has a non-deep cooling mode, and a temperature regulation value in the non-deep cooling mode is larger than a temperature regulation value in the deep cooling mode;

the first air return duct is used for communicating the first storage compartment with the second storage compartment through the first air door so as to convey return air of the first storage compartment into the second storage compartment;

work as first storing compartment is set for cryrogenic mode just when the second storing compartment needs refrigeration, first air door with first forced draught blower is all controlled to be opened, just first forced draught blower configuration makes the return air warp of first storing compartment the first return air wind channel gets into the second storing compartment, in order to adjust the temperature of second storing compartment.

Optionally, the refrigerator further comprises:

the evaporator chamber, an evaporator positioned in the evaporator chamber and a first air supply duct;

first air supply wind channel configuration will the evaporimeter room with room intercommunication between first storing, first forced draught blower set up in the first air supply wind channel, work as room is set for between first storing when cryrogenic mode and need refrigerate, first forced draught blower is controlled to be opened to the configuration makes the refrigerated air current of evaporimeter is through first air supply wind channel gets into between first storing room, in order to adjust the temperature of room between first storing.

Optionally, the refrigerator further comprises:

the second air supply duct is configured to respectively communicate the evaporator chamber with the first storage compartment and the second storage compartment;

when first storing compartment is set for non-cryrogenic mode just first storing compartment and/or when the second storing compartment needs refrigeration, the second forced draught blower is controlled to be opened, and configure to and impel the refrigerated air current of evaporimeter passes through second air supply wind channel gets into first storing compartment and/or second storing compartment.

Optionally, the refrigerator further comprises:

the second return air duct is used for communicating the first storage compartment with the evaporator chamber through the second air door, so that the return air of the first storage compartment flows back into the evaporator chamber through the second return air duct;

work as first storing compartment is set for when cryrogenic mode and need refrigerate just when the second storing compartment does not need to refrigerate, perhaps, work as first storing compartment is set for when non-cryrogenic mode and need refrigerate, the controlled opening of second air door, and configure to the messenger the return air warp of first storing compartment the second return air wind channel flows back to in the evaporator room by the evaporator recooling.

Optionally, the first storage compartment is located above the second storage compartment, and the evaporator is located behind the second storage compartment;

the refrigerator also comprises a third air door, the second air supply duct comprises a lower air duct section and an upper air duct section, the lower air duct section is configured to communicate the evaporator chamber with the second storage compartment, and the upper air duct section communicates the lower air duct section with the first storage compartment through the third air door;

when first storing compartment is set for non-cryrogenic mode and need refrigerate, the controlled opening of third throttle is so that the refrigerated at least partial air current of evaporimeter passes through lower wind channel section with go up the wind channel section and get into first storing compartment.

Optionally, the first air supply duct and the second air supply duct are both arranged behind the first storage compartment and the second storage compartment and are distributed at intervals along the transverse direction;

the first air return duct is positioned behind the second storage compartment and is positioned in front of and below the first air supply duct;

and the second return air duct is positioned behind the second storage compartment.

Optionally, a first air supply outlet and a second air supply outlet which are transversely distributed are formed in the upper section of the rear wall of the first storage compartment;

the first air supply duct is communicated with the first storage chamber through the first air supply outlet, and the second air supply duct is communicated with the first storage chamber through the second air supply outlet.

Optionally, a first air return opening is formed in a lower section of the rear wall of the first storage compartment, the first air return opening is communicated with the first air return duct through the first air door, and the first air return opening is communicated with the second air return duct through the second air door.

Optionally, a third air supply outlet and a fourth air supply outlet are formed in the upper section of the rear wall of the second storage compartment;

the first air return duct is communicated with the second storage chamber through the third air supply outlet, and the second air supply duct is communicated with the second storage chamber through the fourth air supply outlet;

the lower section of the rear wall of the second storage compartment is provided with a second air return opening which is communicated with the evaporator chamber and is positioned below the evaporator, so that the return air of the second storage compartment flows back to the evaporator chamber from the second air return opening.

Optionally, the refrigerator further comprises:

the electromagnetic valve is provided with an inlet end connected with an outlet end of the compressor, a first outlet end connected with an inlet end of the first capillary tube and a second outlet end connected with an inlet end of the second capillary tube, and the flow rate of the first capillary tube is smaller than that of the second capillary tube;

a first inlet end of the evaporator is communicated with an outlet end of the first capillary tube, and a second inlet end of the evaporator is communicated with an outlet end of the second capillary tube;

when first storing compartment is set for when cryrogenic mode, the solenoid valve is configured to the controlled conduction first play end with the end of advancing of first capillary, works as when first storing compartment is set for when non-cryrogenic mode, the solenoid valve is configured to the controlled conduction the second play end with the end of advancing of second capillary.

The utility model discloses a refrigerator through set up the return air wind channel between first storing room and second storing room, will be set for in the second storing room is introduced to the return air of the first storing room of cryrogenic mode, for second storing room provides the cold air current, adjusts the temperature of second storing room to can reduce the waste of cold volume.

Further, the utility model discloses a refrigerator can be according to the different refrigeration mode that first storing room was set for, selects different forced draught blower and air supply route to accomplish the air supply circulation between first storing room, second storing room and evaporimeter room respectively, guarantees that the air supply of first storing room, second storing room is independent.

Further, the utility model discloses a refrigerator, evaporimeter are connected with the capillary of two different flows, and the refrigerator can adopt different refrigerating system circulation according to the different refrigeration mode of first storing compartment, can satisfy user's temperature demand and can improve system efficiency again.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic side sectional view of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic front sectional view of a refrigerator according to an embodiment of the present invention;

fig. 3 is a schematic connection diagram of a refrigeration system of a refrigerator according to an embodiment of the present invention.

Detailed Description

For convenience of description, the directions of "up", "down", "front", "back", "lateral", and the like referred to in the specification are defined according to the spatial position relationship in the normal operation state of the refrigerator 10, for example, as shown in fig. 1 and 2, the side of the refrigerator 10 facing the user is front, and the side facing away from the user is back. The lateral direction means a direction parallel to the width direction of the refrigerator 10.

Fig. 1 is a schematic side sectional view of a refrigerator 10 according to an embodiment of the present invention, and fig. 2 is a schematic front sectional view of the refrigerator 10 according to an embodiment of the present invention.

The refrigerator 10 of the present embodiment includes a cabinet 100, and a first storage compartment 120 and a second storage compartment 110 are defined in the cabinet 100, the first storage compartment 120 has a cryogenic mode and a non-cryogenic mode, and the second storage compartment 110 has a non-cryogenic mode, and a temperature regulation value in the non-cryogenic mode is greater than a temperature regulation value in the cryogenic mode. That is, the first storage compartment 120 is a temperature-changing chamber, and the temperature adjustment range thereof is wide.

Particularly, in the embodiment, the refrigerator 10 further includes a first air return duct 150, a first damper 104 and a first blower 102, wherein the first air return duct 150 communicates the first storage compartment 120 with the second storage compartment 110 through the first damper 104 to deliver the return air of the first storage compartment 120 to the second storage compartment 110. When the first storage compartment 120 is set to the deep cooling mode and the second storage compartment 110 needs to be cooled, the first damper 104 and the first blower 102 are configured to be controlled to be opened, and the first blower 102 is configured to force the return air of the first storage compartment 120 to enter the second storage compartment 110 through the first return air duct 150, so that the return air of the first storage compartment 120 is used for providing cold energy for the second storage compartment 110, and waste of the cold energy is reduced.

Since the temperature of first storage compartment 120 in the cryogenic mode is much lower than the set temperature of second storage compartment 110 in the non-cryogenic mode, it is ensured that the return air from first storage compartment 120 can reduce the temperature of second storage compartment 110 to its set temperature value. The non-cryogenic mode may be a freezing mode or a cold storage mode.

The temperature range of the deep cooling mode can be-30 to-40 ℃, the temperature range of the freezing mode can be-15 to-24 ℃, the temperature range of the cold storage mode can be 1 to 9 ℃, the temperature ranges are only examples, and the invention is not particularly limited thereto.

The first storage compartment 120 and the second storage compartment 110 may be defined by one storage bladder, or may be defined by two storage bladders, respectively.

In this embodiment, the first storage compartment 120 may be cooled by compression cooling or other cooling methods, such as semiconductor cooling. The first storage compartment 120 may be cooled by air cooling or direct cooling in the compression refrigeration mode.

In the embodiment shown in the drawings, the first storage compartment 120 is cooled in an air cooling manner, specifically, the refrigerator 10 further comprises an evaporator chamber 130, an evaporator 101 located in the evaporator chamber 130, and a first supply air duct 140 communicated with the evaporator chamber 130, the first supply air duct 140 is configured to communicate the evaporator chamber 130 with the first storage compartment 120, the first blower 102 is located in the first supply air duct 140, and when the first storage compartment 120 is set to a deep cooling mode and cooling is required, the first blower 102 is controlled to be turned on and configured to promote airflow cooled by the evaporator 101 to enter the first storage compartment 120 through the first supply air duct 140 so as to regulate the temperature of the first storage compartment 120.

When the temperature of the second storage compartment 110 is reduced to the set temperature value, that is, when the second storage compartment 110 reaches the preset shutdown temperature, the return air of the first storage compartment 120 does not flow to the second storage compartment 110 any more, but directly returns to the evaporator chamber 130 to be cooled by the evaporator 101 in the non-deep cooling mode of the first storage compartment 120. Specifically, the refrigerator 10 further includes a second return air duct 170 and a second damper 105, and the second return air duct 170 communicates the first storage compartment 120 with the evaporator compartment 130 through the second damper 105, so that the return air of the first storage compartment 120 directly flows back into the evaporator compartment 130 through the second return air duct 170.

When first storing compartment 120 is set to deep cooling mode and need to refrigerate and second storing compartment 110 does not need to refrigerate, perhaps, when first storing compartment 120 is set to non-deep cooling mode and need to refrigerate, second air door 105 is controlled to open to be configured as and make the return air of first storing compartment 120 flow back to by evaporimeter 101 recooling in evaporimeter room 130 through second return air wind channel 170 to form the air current circulation between first storing compartment 120 and evaporimeter room 130, realize the independent air supply of first storing compartment 120.

When the first compartment 120 is set to the non-deep cooling mode, the temperatures of the first compartment 120 and the second compartment 110 are the same or have a small difference, the return air of the first compartment 120 cannot satisfy the cooling requirement of the second compartment 110, and in order to satisfy the cooling requirement of the second compartment 110, the refrigerator 10 of the present embodiment further includes a second supply air duct 160 and a second blower 103 disposed in the second supply air duct 160, the second supply air duct 160 is configured to communicate the evaporator chamber 130 with the second compartment 110, when the first storage compartment 120 is set to a non-cryogenic mode and the second storage compartment 110 requires cooling, the second blower 103 is turned on, and is configured to induce an air flow cooled by the evaporator 101 to enter the first storage compartment 120 through the second supply air duct 160, so as to independently supply air to the first storage compartment 120 and meet the refrigeration requirement of the first storage compartment 120.

Further, when the first storage compartment 120 is in the non-cryogenic mode, the air supply path of the first storage compartment 120 may be changed from the first air supply duct 140 to the second air supply duct 160 in the cryogenic mode, that is, the second air supply duct 160 may be further configured to communicate the evaporator chamber 130 with the first storage compartment 120, and when the first storage compartment 120 is set to the non-cryogenic mode and the first storage compartment 120 requires cooling, the second air supply blower 103 is controlled to be turned on and configured to promote the air flow cooled by the evaporator 101 to enter the first storage compartment 120 through the second air supply duct 160.

In the embodiment shown in the drawings, the first storage compartment 120 may be located above the second storage compartment 110, the evaporator 101 may be located behind the second storage compartment 110, and in order to ensure that the second supply air duct 160 supplies air to the second storage compartment 110 and the first storage compartment 120 independently, the second supply air duct 160 may include two sections, a lower duct section and an upper duct section, the lower duct section being configured to communicate the evaporator chamber 130 with the second storage compartment 110, and the upper duct section communicating the lower duct section with the first storage compartment 120 through the third damper 106. When the first compartment 120 is set to a non-cryogenic mode and cooling is required, the third damper 106 is controlled to open to allow at least a portion of the air flow cooled by the evaporator 101 to enter the first compartment 120 through the lower duct section and the upper duct section to ensure independent air supply to the first compartment 120 and the second compartment 110.

In the embodiment shown in the drawings, the first air supply duct 140 and the second air supply duct 160 are disposed behind the first storage compartment 120 and the second storage compartment 110 and are distributed at intervals along the transverse direction, the first air return duct 150 is located behind the second storage compartment 110 and is located in front of and below the first air supply duct 140, and the second air return duct 170 is located behind the second storage compartment 110. In the embodiment, each air supply duct and each air return duct are concentrated at the rear part of each storage chamber, so that the rear space of each storage chamber can be fully utilized, the transverse size of each storage chamber is ensured, and the volume of each storage chamber is increased.

As shown in fig. 2, a first air supply outlet 122 and a second air supply outlet 123 are formed at an upper section of a rear wall of the first storage compartment 120, and are transversely distributed, the first air supply duct 140 can be communicated with the first storage compartment 120 through the first air supply outlet 122, and the second air supply duct 160 can be communicated with the first storage compartment 120 through the second air supply outlet 123, so that air supply of the first air supply duct 140 and air supply of the second air supply duct 160 are ensured to be independent from each other.

The lower section of the rear wall of the first storage compartment 120 may be formed with a first air return opening 121, the first air return opening 121 is communicated with the first air return duct 150 through the aforementioned first air door 104, and the first air return opening 121 is communicated with the second air return duct 170 through the aforementioned second air door 105, so that by controlling the opening and closing of the first air door 104 and the second air door 105, the return air flowing out of the first storage compartment 120 from the first air return opening 121 can be controlled to directly flow back to the evaporator chamber 130 or flow back to the second storage compartment 110, thereby controlling the return air direction of the first storage compartment 120.

As shown in fig. 2, the first damper 104 is located on the first return air duct 150, the second damper 105 is located on the second return air duct 170, and the first damper 104 and the second damper 105 are transversely distributed below the first return air opening 121. The first damper 104 and the second damper 105 can be linked by a motor, that is, the first motor controls the opening and closing of the first damper 104 and the second damper 105, and when one of the first damper 104 and the second damper 105 is opened, the other is closed.

In other embodiments, as shown in fig. 1, a first air return opening 121 may be formed in the bottom wall of the first storage compartment 120, the first air return opening 121 is communicated with the first air return duct 150 through a first damper (not shown in fig. 1), another air return opening (not shown in fig. 1) is formed in the lower section of the rear wall of the first storage compartment 120, and the another air return opening is communicated with the second air return duct 170 through a second damper (not shown in fig. 1).

In the embodiment shown in fig. 2, a third air supply outlet 111 and a fourth air supply outlet 112 are formed in an upper section of a rear wall of the second storage compartment 110, the first air return duct 150 is communicated with the second storage compartment 110 through the third air supply outlet 111, and the second air supply duct 160 is communicated with the second storage compartment 110 through the fourth air supply outlet 112, so that the first air return duct 150 and the second air supply duct 160 supply air to the second storage compartment 110 independently.

The lower section of the rear wall of the second storage compartment 110 may be formed with a second return air opening 113 communicating with the evaporator compartment 130 and located below the evaporator 101, so that the return air of the second storage compartment 110 is returned to the evaporator compartment 130 from the second return air opening 113.

Fig. 3 is a schematic connection diagram of a refrigeration system of the refrigerator 10 according to an embodiment of the present invention.

Switching between the cryogenic mode and the non-cryogenic mode of the first storage compartment 120 is realized, as shown in fig. 3, the refrigeration system of the refrigerator 10 of the present embodiment further includes a compressor 11, an electromagnetic valve 13, a first capillary 14 and a second capillary 15, the electromagnetic valve 13 has an inlet connected to an outlet of the compressor 11, and has a first outlet connected to an inlet of the first capillary 14 and a second outlet connected to an inlet of the second capillary 15.

The first inlet end of the evaporator 101 is communicated with the outlet end of the first capillary 14, the second inlet end of the evaporator 101 is communicated with the outlet end of the second capillary 15, when the first storage chamber 120 is set to be in the deep cooling mode, the solenoid valve 13 is configured to be in controlled conduction with the first outlet end and the inlet end of the first capillary 14, and when the first storage chamber 120 is set to be in the non-deep cooling mode, the solenoid valve 13 is configured to be in controlled conduction with the second outlet end and the inlet end of the second capillary 15.

The flow of the first capillary 14 should be less than the flow of the second capillary 15, the flow of the first capillary 14 is less, the throttling effect is stronger, and when the electromagnetic valve 13 is switched to communicate the first capillary 14 with the evaporator 101, the temperature of the evaporator 101 can be lower, so that the temperature requirement of the deep cooling mode is met. Therefore, different capillaries can be switched according to different refrigeration modes of the first storage chamber 120, so that the efficiency of the refrigeration system is improved, and energy conservation is facilitated.

The first storage compartment 120 supplies cold energy to the second storage compartment 110 by utilizing return air of the first storage compartment in the deep cooling mode, and the electromagnetic valve 13, which is required to be refrigerated and generated by the second storage compartment 110 in the non-deep cooling mode, is also prevented from being switched during the deep cooling refrigeration of the first storage compartment 120, so that the refrigeration efficiency is further improved.

As well known to those skilled in the art, as shown in fig. 2, the refrigeration system of the refrigerator 10 may further include a condenser 12 between an inlet end of the solenoid valve 13 and an outlet end of the compressor 11, in addition to the aforementioned compressor 11, the solenoid valve 13, the first capillary tube 14, and the second capillary tube 15.

The refrigerator 10 of the present embodiment may further include a third storage compartment 180, which may be a refrigerating compartment, located above the first storage compartment 120, the refrigerator 10 further includes another evaporator 16 and a third capillary 17, the solenoid valve 13 has a third outlet connected to an inlet of the third capillary 17, an outlet of the third capillary 17 is communicated with an inlet of the another evaporator 16, an outlet of the another evaporator 16 is communicated with an inlet of the compressor 11, and when the third storage compartment 180 requires refrigeration, the solenoid valve 13 is configured to controllably conduct the third outlet thereof and the inlet of the third capillary 17, so as to supply refrigeration to the third storage compartment 180 by using the another evaporator 16.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A refrigerator, characterized by comprising:

the refrigerator comprises a refrigerator body, a first storage chamber and a second storage chamber are limited in the refrigerator body, the first storage chamber has a deep cooling mode and a non-deep cooling mode, the second storage chamber has a non-deep cooling mode, and a temperature regulation value in the non-deep cooling mode is larger than a temperature regulation value in the deep cooling mode;

the first air return duct is used for communicating the first storage compartment with the second storage compartment through the first air door so as to convey return air of the first storage compartment into the second storage compartment;

work as first storing compartment is set for cryrogenic mode just when the second storing compartment needs refrigeration, first air door with first forced draught blower is all controlled to be opened, just first forced draught blower configuration makes the return air warp of first storing compartment the first return air wind channel gets into the second storing compartment, in order to adjust the temperature of second storing compartment.

2. The refrigerator according to claim 1, further comprising:

the evaporator chamber, an evaporator positioned in the evaporator chamber and a first air supply duct;

first air supply wind channel configuration will the evaporimeter room with room intercommunication between first storing, first forced draught blower set up in the first air supply wind channel, work as room is set for between first storing when cryrogenic mode and need refrigerate, first forced draught blower is controlled to be opened to the configuration makes the refrigerated air current of evaporimeter is through first air supply wind channel gets into between first storing room, in order to adjust the temperature of room between first storing.

3. The refrigerator of claim 2, further comprising:

the second air supply duct is configured to respectively communicate the evaporator chamber with the first storage compartment and the second storage compartment;

when first storing compartment is set for non-cryrogenic mode just first storing compartment and/or when the second storing compartment needs refrigeration, the second forced draught blower is controlled to be opened, and configure to and impel the refrigerated air current of evaporimeter passes through second air supply wind channel gets into first storing compartment and/or second storing compartment.

4. The refrigerator of claim 3, further comprising:

the second return air duct is used for communicating the first storage compartment with the evaporator chamber through the second air door, so that the return air of the first storage compartment flows back into the evaporator chamber through the second return air duct;

work as first storing compartment is set for when cryrogenic mode and need refrigerate just when the second storing compartment does not need to refrigerate, perhaps, work as first storing compartment is set for when non-cryrogenic mode and need refrigerate, the controlled opening of second air door makes the return air warp of first storing compartment the second return air wind channel flows back to in the evaporator room by the evaporimeter is recooled.

5. The refrigerator according to claim 4,

the first storage chamber is positioned above the second storage chamber, and the evaporator is positioned behind the second storage chamber;

the refrigerator also comprises a third air door, the second air supply duct comprises a lower air duct section and an upper air duct section, the lower air duct section is configured to communicate the evaporator chamber with the second storage compartment, and the upper air duct section communicates the lower air duct section with the first storage compartment through the third air door;

when first storing compartment is set for non-cryrogenic mode and need refrigerate, the controlled opening of third throttle is so that the refrigerated at least partial air current of evaporimeter passes through lower wind channel section with go up the wind channel section and get into first storing compartment.

6. The refrigerator according to claim 5,

the first air supply duct and the second air supply duct are arranged behind the first storage chamber and the second storage chamber and are distributed at intervals along the transverse direction;

the first air return duct is positioned behind the second storage compartment and is positioned in front of and below the first air supply duct;

and the second return air duct is positioned behind the second storage compartment.

7. The refrigerator according to claim 6,

a first air supply outlet and a second air supply outlet which are transversely distributed are formed in the upper section of the rear wall of the first storage compartment;

the first air supply duct is communicated with the first storage chamber through the first air supply outlet, and the second air supply duct is communicated with the first storage chamber through the second air supply outlet.

8. The refrigerator according to claim 6,

and a first air return opening is formed in the lower section of the rear wall of the first storage compartment, the first air return opening is communicated with the first air return air channel through the first air door, and the first air return opening is communicated with the second air return air channel through the second air door.

9. The refrigerator according to claim 6,

a third air supply outlet and a fourth air supply outlet are formed in the upper section of the rear wall of the second storage compartment;

the first air return duct is communicated with the second storage chamber through the third air supply outlet, and the second air supply duct is communicated with the second storage chamber through the fourth air supply outlet;

the lower section of the rear wall of the second storage compartment is provided with a second air return opening which is communicated with the evaporator chamber and is positioned below the evaporator, so that the return air of the second storage compartment flows back to the evaporator chamber from the second air return opening.

10. The refrigerator of claim 2, further comprising:

the electromagnetic valve is provided with an inlet end connected with an outlet end of the compressor, a first outlet end connected with an inlet end of the first capillary tube and a second outlet end connected with an inlet end of the second capillary tube, and the flow rate of the first capillary tube is smaller than that of the second capillary tube;

a first inlet end of the evaporator is communicated with an outlet end of the first capillary tube, and a second inlet end of the evaporator is communicated with an outlet end of the second capillary tube;

when first storing compartment is set for when cryrogenic mode, the solenoid valve is configured to the controlled conduction first play end with the end of advancing of first capillary, works as when first storing compartment is set for when non-cryrogenic mode, the solenoid valve is configured to the controlled conduction the second play end with the end of advancing of second capillary.

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