CN214039028U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, include: a tank defining a cryogenic compartment therein; the Stirling refrigerating system is arranged outside the deep cooling room and comprises a Stirling refrigerating machine and a heat exchanger, and the cold end of the Stirling refrigerating machine is thermally connected with the heat exchanger; the box body is configured to at least wrap the heat exchanger, and a first opening is formed in the box body; and the air supply duct is configured into an air supply outlet with one end communicated with the box body through the first opening and the other end communicated with the subzero chamber, so that the subzero chamber is supplied with cold. The utility model discloses a refrigerator is through setting up stirling refrigerating system between cryrogenic outdoor to set up the box body and wrap up heat exchanger, set up first opening on the box body, utilize the supply-air outlet of air supply duct intercommunication box body and cryrogenic room, make stirling refrigerating system's cold volume can supply with for cryrogenic room through air supply duct air current flow.

Description

Refrigerator with a door

Technical Field

The utility model relates to a refrigeration field especially relates to a refrigerator.

Background

Most of the existing household refrigerators adopt a vapor compression mode for refrigeration, and the temperature in the refrigerator is difficult to reach below minus 30 ℃. The Stirling refrigerating system is adopted for refrigeration in the fields of spaceflight, medical treatment and the like, and the refrigerating temperature of the system can be below 200 ℃ below zero. When the existing refrigerator adopts the Stirling refrigerating system, part of components of the Stirling refrigerating system are introduced into the storage chamber to realize cold supply, and the structure of the storage chamber needs to be greatly changed, so that the problem of complex process flow is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome at least one defect of prior art, provide an adoption stirling refrigerating system refrigerated refrigerator that storing compartment structure need not to change almost.

A further object of the present invention is to provide a refrigerator using stirling refrigerating system with high efficiency of cold transfer.

Particularly, the utility model provides a refrigerator, include:

a tank defining a cryogenic compartment therein;

the Stirling refrigerating system is arranged outside the deep cooling room and comprises a Stirling refrigerating machine and a heat exchanger, wherein the cold end of the Stirling refrigerating machine is thermally connected with the heat exchanger;

the box body is configured to at least wrap the heat exchanger, and a first opening is formed in the box body; and

and the air supply duct is configured to be communicated with the box body through the first opening at one end and communicated with an air supply outlet of the deep cooling chamber at the other end, so that cold quantity is provided for the deep cooling chamber.

Optionally, the box body is further provided with a second opening;

the refrigerator further includes: and the air return duct is configured to have one end communicated with the box body through the second opening and the other end communicated with the air return opening of the deep cooling chamber, so that airflow in the deep cooling chamber flows back into the box body.

Optionally, the supply air duct and the return air duct are connected to the first opening and the second opening respectively by flexible joints.

Optionally, a device chamber is formed at the bottom of the rear side of the box body;

the Stirling refrigerator is arranged in the device chamber, and the cold end of the Stirling refrigerator is arranged upwards;

the box body is arranged above the Stirling refrigerator.

Optionally, the heat exchanger comprises a cold conducting plate and a plurality of cold conducting fins; wherein the cold end is thermally connected with the cold conducting plate; the cold guide fins extend from the cold guide plate to one side far away from the cold end, and airflow channels in the left-right direction are defined between the adjacent cold guide fins;

the second opening is arranged on the left side of the top wall surface of the box body, and the first opening is arranged on the right side of the top wall surface of the box body.

Optionally, the stirling refrigeration system further comprises: the lower end cover of the cold guide piece is buckled outside the cold end to be thermally connected with the cold end, and the upper end of the cold guide piece is thermally connected with the cold guide plate;

the box is configured to wrap around the heat exchanger, the cold guide and the cold end.

Optionally, a heat preservation part is arranged in the box body; and/or

A sealing element is arranged between the upper part of the box body and the top wall of the device chamber.

Optionally, an electric heater is arranged on the heat exchanger for defrosting;

the bottom wall surface of the box body is provided with a water outlet;

the refrigerator further includes: the evaporation dish is arranged in the device chamber, one end of the drain pipe is connected with the water outlet, the other end of the drain pipe extends into the evaporation dish, and defrosting water flows out of the box body through the water outlet and reaches the evaporation dish through the drain pipe; and is

The heat exchanger is obliquely arranged, wherein the height of one side close to the water outlet is lower than that of the side far away from the water outlet; and/or the bottom wall surface of the box body is obliquely arranged, wherein the water outlet is positioned at the lower end of the inclined structure.

Optionally, the refrigerator further comprises:

a vapor compression refrigeration system comprising a compressor, a condenser and an evaporator;

the compressor and the condenser are arranged in the device chamber;

the evaporator is arranged outside the inner container of the deep cooling chamber to provide cold for the deep cooling chamber.

Optionally, the refrigerator further comprises:

the air duct cover plate is arranged in the deep cooling compartment and is provided with an air supply outlet; and

and the air supply fan is positioned between the air duct cover plate and the inner container of the deep cooling chamber and is arranged corresponding to the air supply outlet.

The utility model discloses a refrigerator is through setting up stirling refrigerating system between cryrogenic outdoor, and set up the box body and wrap up heat exchanger, set up first opening on the box body, utilize the supply-air outlet between air supply duct intercommunication box body and cryrogenic, make stirling refrigerating system's cold volume can supply with for cryrogenic room through air supply duct airflow flow, and because all set up whole stirling refrigerating system between cryrogenic outdoor, need not to change the structure of room between current storing, make manufacturing process simplify, and assemble simply, the conduction of stirling refrigerator's vibration has still been reduced simultaneously, be favorable to the damping to fall and make an uproar.

Further, the utility model discloses a second opening is through seting up on the box body to the refrigerator to set up return air wind channel and communicate the return air inlet and the box body of cryrogenic room, make the indoor air current of cryrogenic room can flow back to the box body and carry out the heat transfer by heat exchanger again, realize the air current circulation of cryrogenic room.

Further, the utility model discloses a refrigerator is formed with the device room through the rear side bottom at the box, sets up the stirling refrigerator in the device room, and the cold junction sets up to set up the box body in the top of stirling refrigerator, make the part overall arrangement of refrigerator compact, the orderly arrangement, convenient equipment and maintenance set up the length that can shorten the air supply wind channel with the cold junction up simultaneously, make to pass cold distance and shorten, reduce cold volume loss.

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 perspective view of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a rear view schematically showing part of components of the refrigerator shown in fig. 1.

Fig. 3 is a schematic sectional view of a part of components of the refrigerator shown in fig. 2 taken along line a-a.

Fig. 4 is a schematic sectional view of a part of components of the refrigerator shown in fig. 2 taken along line B-B.

Fig. 5 is an exploded schematic view of part of the components of the refrigerator shown in fig. 2.

Detailed Description

In the following description, the orientation or positional relationship indicated by "front", "rear", "upper", "lower", "left", "right", etc. is an orientation based on the refrigerator 100 itself as a reference, as indicated by the direction indicated in fig. 5.

Fig. 1 is a schematic perspective view of a refrigerator 100 according to an embodiment of the present invention. Fig. 2 is a rear view schematically illustrating part of components of the refrigerator 100 shown in fig. 1. Fig. 3 is a schematic cross-sectional view of a portion of the components of the refrigerator 100 shown in fig. 2 along line a-a (the bottom panel of the device chamber 102, the evaporator 405, etc. are not shown). Fig. 4 is a schematic cross-sectional view of a portion of the components of the refrigerator 100 shown in fig. 2 along line B-B (the bottom panel of the device chamber 102, the evaporator 405, etc. are not shown). Fig. 5 is an exploded schematic view of a portion of the components of the refrigerator 100 shown in fig. 2 (the bottom panel of the device compartment 102, vapor compression refrigeration system components, insulation 505, seals 506, etc. are not shown).

The utility model discloses refrigerator 100 can include: the refrigerator comprises a box body 101, a Stirling refrigerating system, a box body 500 and an air supply duct 201. A cryogenic compartment 112 is defined within tank 101. The Stirling refrigerating system is arranged outside the cryogenic compartment 112 and comprises a Stirling refrigerator 300 and a heat exchanger 305, wherein the cold end 302 of the Stirling refrigerator 300 is thermally connected with the heat exchanger 305. The box 500 is configured to wrap at least the heat exchanger 305, and the box 500 is provided with a first opening 501. The air supply duct 201 is configured such that one end is communicated with the box 500 through the first opening 501, and the other end is communicated with the air supply outlet 103 of the deep cooling compartment 112, thereby providing cold energy to the deep cooling compartment 112. The utility model discloses refrigerator 100 is through setting up stirling refrigerating system outside cryrogenic room 112, and set up box body 500 and wrap up heat exchanger 305, set up first opening 501 on box body 500, utilize air supply duct 201 intercommunication box body 500 and cryrogenic room 112 supply-air outlet 103, make stirling refrigerating system's cold volume can supply with for cryrogenic room 112 through air supply duct 201 airflow, and because all set up whole stirling refrigerating system outside cryrogenic room 112, need not to change the structure of room between current storing, make manufacturing process simplify, and the assembly is simple, the conduction of stirling refrigerator 300's vibration has still been reduced simultaneously, be favorable to the damping to fall and make an uproar.

The box 101 may include a casing, an inner container disposed in the casing, and a heat insulation layer disposed between the casing and the inner container. The inner container limits a storage chamber. The number of the storage compartments may be one or more, and generally, a plurality, so as to realize a multi-temperature zone structure of the refrigerator 100. The refrigerator 100 of the embodiment of the present invention further includes a vapor compression refrigeration system, which includes a compressor 401, a condenser 402, an evaporator 405, a throttling element (not shown in the figure), and the like. The utility model discloses in, will be called cryrogenic room 112 by the storing room of stirling refrigerating system cooling, perhaps by stirling refrigerating system and vapor compression refrigerating system cooling, will be called ordinary room only by the storing room of vapor compression refrigerating system cooling. The common compartment may be, for example, a refrigeration compartment, a freezing compartment, a temperature-changing compartment. The preservation temperature of the cold storage chamber can be 2-9 ℃ generally, and the preservation temperature of the freezing chamber can be-20 ℃ to-16 ℃ generally. The temperature-changing chamber can be adjusted according to requirements and used as a refrigerating chamber or a freezing chamber. The preservation temperature of the deep cooling chamber 112 can be generally-14 ℃ to-80 ℃; when the vapor compression refrigeration system and the stirling refrigeration system supply cold together, the storage temperature of the cryogenic compartment 112 can be widened to 2 ℃ to-80 ℃. The stirling refrigeration system and the vapor compression refrigeration system of the refrigerator 100 of the embodiment of the present invention are controlled independently. The cryogenic compartment 112 may be used as a normal compartment when the stirling cooler 300 is off and the vapor compression refrigeration system is on. In the refrigerator 100 shown in fig. 1, the refrigerator 100 is a cross-door refrigerator, and may include a refrigerating compartment (not shown) located at an upper portion, a deep-cooling compartment 112 located at a left side of a lower portion, and a freezing compartment (not shown) located at a right side of the lower portion.

As shown in fig. 1 and 4, the refrigerator 100 further includes an air duct cover 105 disposed in the deep cooling compartment 112, and the air duct cover 105 is provided with an air outlet 103. An accommodating space is defined between the air duct cover plate 105 and the inner container 113 of the deep cooling compartment 112, an air supply fan 150 is arranged in the accommodating space, and the air supply fan 150 is arranged corresponding to the air supply outlet 103. The air after heat exchange by the heat exchanger 305 flows through the air duct 201, enters the housing space, and is blown out of the air outlet 103 into the deep cooling compartment 112.

Referring to fig. 2 to 5, the box 500 further has a second opening 502. The embodiment of the utility model provides a refrigerator 100 still includes return air wind channel 202, configures into one end through second opening 502 intercommunication box body 500, and the other end intercommunication air return opening 104 of cryrogenic compartment 112 to make the air current in the cryrogenic compartment 112 flow back to in the box body 500. The second opening 502 is preferably spaced from the first opening 501 to allow the air stream entering the cassette 500 to exchange heat substantially with the heat exchanger 305. The utility model discloses refrigerator 100 is through seting up second opening 502 on box body 500 to set up return air wind channel 202 and communicate air return opening 104 and box body 500 of cryrogenic room 112, make the air current in the cryrogenic room 112 can flow back to and carry out the heat transfer by heat exchanger 305 again in the box body 500, realize the air current circulation of cryrogenic room 112. As shown in fig. 1, a return air inlet 104 is formed at the lower part of the deep cooling compartment 112, and the air supply outlet 103 is located above the return air inlet 104, thereby realizing a structure of returning air from the upper air outlet to the lower air outlet.

As shown in fig. 5, the supply air duct 201 and the return air duct 202 are connected to a first opening 501 and a second opening 502, respectively, by a flexible docking piece 203. Through setting up flexible interfacing part 203, can avoid air supply wind channel 201, return air wind channel 202 and box body 500 rigidity collision, can protect air supply wind channel 201, return air wind channel 202 and box body 500 to a certain extent. With continued reference to fig. 5, the inlet end of the air supply duct 201 is connected to the first opening 501 of the box 500 by the flexible docking member 203, and the outlet end is connected to the first duct connection port at the rear wall of the inner container 113; the inlet end of the return air duct 202 is connected to the second air duct connection port at the rear of the bottom wall of the inner container 113, and the outlet end is connected to the second opening 502 of the box body 500 by the flexible docking member 203.

As shown in fig. 3 and 4, the stirling cooler 300 may include a casing 301, a cylinder (not shown), a piston (not shown), and a driving mechanism (not shown). The housing 301 includes a main body portion 311 and a cylindrical portion 312, and the cross-sectional area of the main body portion 311 is larger than that of the cylindrical portion 312. The piston is configured to reciprocate within the cylindrical portion 312 such that a cold end 302 of the stirling cooler 300 is formed at the end of the cylindrical portion 312 and a hot end of the stirling cooler 300 is formed at the interface of the cylindrical portion 312 and the body portion 311. An opening is formed in the rear wall of the main body 311 of the stirling cooler 300, and a heat radiation fan 306 is provided at the opening. A fin radiator 304 may also be provided on the side of the body portion 311 where the cylindrical portion 312 is provided, to further enhance heat dissipation from the stirling cooler 300.

In some embodiments, the rear bottom of the case 101 is formed with a device chamber 102; the Stirling refrigerator 300 is arranged in the device chamber 102, and the cold end 302 is arranged upwards; the cassette 500 is disposed above the stirling cooler 300. The utility model discloses refrigerator 100 is formed with device room 102 through the rear side bottom at box 101, sets up stirling refrigerator 300 in device room 102, and cold junction 302 sets up to set up box body 500 in stirling refrigerator 300's top, make refrigerator 100's part overall arrangement compact, the orderly arrangement, convenient equipment and maintenance set up cold junction 302 up simultaneously and can shorten the length of air supply duct 201, make and pass the cold distance and shorten, reduce cold volume loss. As shown in fig. 2 and 5, a plurality of legs 341 are provided at intervals around the bottom of the cabinet 301 of the stirling cooler 300, and elastic feet 342 are provided at the legs 341, and the stirling cooler 300 is placed on the bottom plate of the device chamber 102 using the elastic feet 342 to reduce vibration noise. As shown in fig. 2, the stirling cooler 300, the compressor 401, and the condenser 402 are disposed in the device chamber 102 at intervals in the transverse direction, so that the entire refrigerator 100 is compact in component layout and convenient to set up and maintain. An evaporator 405 may be provided outside of the inner bladder 113 of cryogenic compartment 112 to allow the vapor compression refrigeration system to provide refrigeration to cryogenic compartment 112. The evaporator 405 may be a plate and tube evaporator. Further, a heat radiation fan 403 is further provided between the compressor 401 and the condenser 402 to promote the flow of the air stream.

In some embodiments, as shown in fig. 3 and 5, the heat exchanger 305 includes a cold plate 351 and a plurality of cold conduction fins 352; wherein cold end 302 is thermally coupled to cold conductive plate 351; a plurality of cooling guide fins 352 extend from the cooling guide plate 351 to a side away from the cold end 302, and an air flow passage in the left-right direction is defined between adjacent cooling guide fins 352. The second opening 502 is opened on the left side of the top wall surface of the case 500, and the first opening 501 is opened on the right side of the top wall surface of the case 500. The utility model discloses refrigerator 100's heat exchanger 305 is provided to include and leads cold drawing 351 and a plurality of cold fin 352 to inject the airflow channel along left right direction between the adjacent cold fin 352, can increase the area of contact of air current and heat exchanger 305, improve heat exchange efficiency, the cooperation sets up the position of first opening 501 and second opening 502 simultaneously, makes the air current flow more smooth and easy.

With continued reference to fig. 3, the stirling refrigeration system further comprises: a cold conducting member 303, the lower end of which is covered and buckled outside the cold end 302 to be thermally connected with the cold end 302, and the upper end of which is thermally connected with the cold conducting plate 351; cassette 500 is configured to enclose heat exchanger 305, cold sink 303, and cold sink 302. The utility model discloses cold piece 303 is led through setting up to refrigerator 100 to the direct cover of one end that will lead cold piece 303 is buckled and is come with cold end 302 thermal connection in the outside of cold end 302, and the other end is direct and heat exchanger 305 thermal connection, makes cold end 302 very short with heat exchanger 305's biography cold distance, and cold volume loss is little. The heat exchanger 305, cold conductor 303 and cold end 302 are all wrapped in the box 500, so that the loss of cold energy can be further reduced. The cold conductive member 303 is typically a thermally conductive metal member, such as an aluminum alloy member.

As shown in fig. 2 to 5, an insulating member 505 is provided in the box body 500, and the heat exchanger 305, the cold conduction member 303 and the cold end 302 are all wrapped in the insulating member 505. Furthermore, a sealing member 506 is provided between the upper portion of the box 500 and the top wall of the device chamber 102, so that the box 500 can be sealed with the supply air duct 201 and the return air duct 202. The sealing member 506 may be a low temperature sponge, which can provide a certain shock absorption effect while ensuring sealing.

With continued reference to fig. 5, in some embodiments, an electric heater 353 is provided on the heat exchanger 305 for defrosting. A drain opening 503 is formed in the bottom wall surface of the case 500. The embodiment of the utility model provides a refrigerator 100 still includes drain pipe 504 and evaporating dish 404, and evaporating dish 404 sets up in device room 102, and the drain opening 503 is connected to the one end of drain pipe 504, and in the other end extended to evaporating dish 404, the defrosting water flowed out box body 500 through drain opening 503 and reachd evaporating dish 404 through drain pipe 504. The heat exchanger 305 is disposed obliquely with the height of the side close to the drain opening 503 lower than the height of the side far from the drain opening 503; and/or the bottom wall of the case 500, wherein the drain opening 503 is at the lower end of the inclined structure. By providing the heat exchanger 305 with an inclination and/or providing the bottom wall surface of the box 500 with an inclination, the defrosting water can be smoothly discharged out of the box 500 and into the drain pipe 504. The vapor compression refrigeration system and the stirling refrigeration system may share a single evaporator pan 404. The electric heater 353 may be an aluminum tube heater.

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:

a tank defining a cryogenic compartment therein;

the Stirling refrigerating system is arranged outside the deep cooling room and comprises a Stirling refrigerating machine and a heat exchanger, and the cold end of the Stirling refrigerating machine is thermally connected with the heat exchanger;

the box body is configured to at least wrap the heat exchanger, and a first opening is formed in the box body; and

and the air supply duct is configured into an air supply opening with one end communicated with the box body through the first opening and the other end communicated with the subzero chamber, so that the subzero chamber is provided with cold.

2. The refrigerator according to claim 1,

the box body is also provided with a second opening;

the refrigerator further includes: and the return air duct is configured into a structure that one end is communicated with the box body through the second opening and the other end is communicated with the return air inlet in the deep cooling chamber, so that the air flow in the deep cooling chamber flows back to the box body.

3. The refrigerator according to claim 2,

the air supply duct and the air return duct are respectively connected with the first opening and the second opening by flexible butt joints.

4. The refrigerator according to claim 2,

a device chamber is formed at the bottom of the rear side of the box body;

the Stirling refrigerator is arranged in the device chamber, and the cold end of the Stirling refrigerator is arranged upwards;

the box body is arranged above the Stirling refrigerator.

5. The refrigerator according to claim 4,

the heat exchanger comprises a cold guide plate and a plurality of cold guide fins; wherein the cold end is thermally coupled to the cold conductive plate; the plurality of cold guide fins extend from the cold guide plate to one side far away from the cold end, and airflow channels in the left-right direction are defined between the adjacent cold guide fins;

the second opening is arranged on the left side of the top wall surface of the box body, and the first opening is arranged on the right side of the top wall surface of the box body.

6. The refrigerator according to claim 5,

the stirling refrigeration system further comprising: the lower end of the cold guide piece is covered and buckled outside the cold end to be thermally connected with the cold end, and the upper end of the cold guide piece is thermally connected with the cold guide plate;

the cassette is configured to enclose the heat exchanger, the cold sink, and the cold end.

7. The refrigerator according to claim 6,

a heat preservation piece is arranged in the box body; and/or

And a sealing element is arranged between the upper part of the box body and the top wall of the device chamber.

8. The refrigerator according to claim 4,

the heat exchanger is provided with an electric heater for defrosting;

a water outlet is formed in the bottom wall surface of the box body;

the refrigerator further includes: the evaporation dish is arranged in the device chamber, one end of the drain pipe is connected with the water outlet, the other end of the drain pipe extends into the evaporation dish, and defrosting water flows out of the box body through the water outlet and reaches the evaporation dish through the drain pipe; and is

The heat exchanger is obliquely arranged, wherein the height of one side close to the water outlet is lower than that of the side far away from the water outlet; and/or the bottom wall surface of the box body is obliquely arranged, wherein the water outlet is positioned at the lower end of the inclined structure.

9. The refrigerator of claim 4, further comprising:

a vapor compression refrigeration system comprising a compressor, a condenser and an evaporator;

the compressor and the condenser are arranged in the device chamber;

the evaporator is arranged outside the inner container of the deep cooling chamber to provide cold for the deep cooling chamber.

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

the air duct cover plate is arranged in the deep cooling compartment, and the air supply outlet is formed in the air duct cover plate; and

and the air supply fan is positioned between the air duct cover plate and the inner container of the deep cooling chamber and corresponds to the air supply outlet.

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