CN214276198U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, include: the refrigerator comprises a refrigerator body, a storage compartment and a storage box, wherein the refrigerator body is internally limited with the storage compartment; the storage chambers are respectively configured to provide cold energy by using the Stirling refrigeration systems, each group of Stirling refrigeration systems is respectively configured to provide cold energy to at least one storage chamber, and each group of Stirling refrigeration systems respectively comprises a Stirling refrigerator; wherein a device chamber is formed at the bottom of the rear side of the box body, and at least one Stirling refrigerator is arranged in the device chamber. The utility model discloses a refrigerator avoids the problem of refrigerant leakage which may occur when the vapor compression refrigeration system is adopted for refrigeration; the device chamber is formed at the bottom of the rear side of the box body, and the at least one Stirling refrigerator is arranged in the device chamber, so that the arrangement and the layout of the Stirling refrigerator can be facilitated.

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 refrigerators adopt a vapor compression refrigeration system comprising a compressor, an evaporator, a condenser and the like, but the vapor compression refrigeration system needs to utilize refrigerant circulation, so that the problem of refrigerant leakage can occur, and meanwhile, the refrigeration temperature of the vapor compression refrigeration system is still high. With the health emphasis of people, the household stock of high-end food materials is also increasing. According to the research, the storage temperature of the food material is lower than the glass transition temperature, the property of the food material is relatively stable, and the quality guarantee period is greatly prolonged. Wherein the glass transition temperature of the food material is mostly concentrated at-80 ℃ to-30 ℃. Therefore, there is a need for a refrigerator that does not risk leakage of refrigerant, and that can achieve ultra-low storage temperatures, which is more advantageous for storage of food materials.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a no refrigerant leaks the risk, more does benefit to the refrigerator that eats the material storage.

The utility model discloses a further purpose provides a part arranges rationally, the convenient refrigerator of maintaining.

Particularly, the utility model provides a refrigerator, include:

the refrigerator comprises a refrigerator body, a storage compartment and a storage box, wherein the refrigerator body is internally limited with the storage compartment; and

the Stirling refrigerating system comprises at least two groups of Stirling refrigerating systems, wherein each storage chamber is respectively configured to provide cold energy by using the Stirling refrigerating systems, each group of Stirling refrigerating systems is respectively configured to provide cold energy to at least one storage chamber, and each group of Stirling refrigerating systems respectively comprises a Stirling refrigerator; wherein, a device chamber is formed at the bottom of the rear side of the box body, and at least one Stirling refrigerator is arranged in the device chamber.

Optionally, each set of Stirling refrigeration systems further comprises a heat exchanger and a cold conducting device, wherein

The heat exchanger is arranged in the storage chamber;

the cold guide device comprises a cold end adapter and a cold guide heat pipe, the cold end adapter is fixed with the cold end of the Stirling refrigerator, one end of the cold guide heat pipe is thermally connected with the cold end adapter, and the other end of the cold guide heat pipe is thermally connected with the heat exchanger.

Optionally, the heat exchanger includes a plurality of first cooling guide fins arranged at intervals, an air outlet channel is defined between adjacent first cooling guide fins, and the cooling guide heat pipe is arranged through the plurality of first cooling guide fins; or

The heat exchanger comprises a cold guide plate and a plurality of second cold guide fins, wherein the second cold guide fins extend forwards from the front surface of the cold guide plate, air outlet channels are defined between the adjacent second cold guide fins, and the cold guide heat pipes are fixed with the cold guide plate.

Optionally, the at least one group of stirling refrigeration systems is configured to provide refrigeration to the at least two storage compartments; wherein

The heat exchanger of the Stirling refrigerating system is arranged in a storage room;

the refrigerator also comprises at least one air supply duct, wherein one end of the air supply duct is connected with the storage chamber provided with the heat exchanger, and the other end of the air supply duct is connected with the storage chamber not provided with the heat exchanger, so that a group of Stirling refrigerating systems can provide cold energy for at least two storage chambers.

Optionally, the refrigerator further comprises: and each air supply duct is internally provided with one air door for controlling the on-off of the air supply duct.

Optionally, the refrigerator further comprises: and one end of the return air duct is connected with a storage area of the storage room which is not provided with the heat exchanger, and the other end of the return air duct is connected with the storage room which is provided with the heat exchanger.

Optionally, each storage compartment corresponds to one group of Stirling refrigeration systems respectively; wherein

The Stirling refrigerator corresponding to the storage chamber at the upper part is arranged at the top of the box body; the Stirling refrigerator corresponding to the storage chamber at the lower part is arranged in the device chamber.

Optionally, when there are at least two stirling coolers in the device chamber, a partition is provided between adjacent stirling coolers.

Optionally, the stirling cooler comprises a housing, a cylinder, a piston and a drive mechanism; the shell comprises a main body part and a cylindrical part, a driving mechanism is arranged in the main body part, and the piston is configured to be driven by the driving mechanism to reciprocate in the cylindrical part, so that a cold end is formed at one end of the cylindrical part, which is far away from the main body part, and a hot end is formed at one end, which is close to the main body part.

Optionally, each set of stirling refrigeration systems further comprises a heat sink; wherein

The heat dissipation device comprises a hot end adapter, a heat conduction heat pipe and a heat dissipation fin, wherein the hot end adapter is in thermal connection with the hot end, one end of the heat conduction heat pipe is in thermal connection with the hot end adapter, and the other end of the heat conduction heat pipe is inserted into the heat dissipation fin; or

The heat dissipation device comprises a heat dissipation fan and a fin radiator, an opening is formed in the side wall of the main body part, and the heat dissipation fan is arranged at the opening; the fin radiator is arranged on the periphery of the hot end and fixed with the main body part.

The refrigerator of the utility model is provided with at least two groups of Stirling refrigerating systems, and each storage chamber utilizes the Stirling refrigerating system to provide cold, thereby avoiding the problem of refrigerant leakage which possibly occurs when the vapor compression refrigerating system is adopted for refrigeration, and the preservation temperature of each storage chamber can reach ultra-low temperature, thereby being more beneficial to food material storage; by configuring each group of Stirling refrigeration systems to provide cold energy for at least one storage chamber, the number of the Stirling refrigeration systems can be smaller than that of the storage chambers, and the overall vibration noise is reduced; the device chamber is formed at the bottom of the rear side of the box body, and the at least one Stirling refrigerator is arranged in the device chamber, so that the arrangement and the layout of the Stirling refrigerator can be facilitated.

Further, the utility model discloses a every group stirling refrigerating system of refrigerator still includes heat exchanger and leads cold charge and put, sets up heat exchanger indoor between the storing, utilizes including cold junction adapter and the cold charge of leading cold heat pipe device realization stirling refrigerator's cold junction and heat exchanger's thermal connection, can make and pass cold structure firm, reliable, passes cold efficiently simultaneously.

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 part of components 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 partially enlarged rear view schematically illustrating part of components of the refrigerator shown in fig. 1.

Fig. 4 is a partially enlarged cross-sectional view taken along line a-a in fig. 2.

Fig. 5 is a partially enlarged cross-sectional view taken along line B-B in fig. 2.

Fig. 6 is a rear view schematically illustrating part of components of a refrigerator according to another embodiment of the present invention.

Fig. 7 is an exploded schematic view of a double door and a door frame of the refrigerator shown in fig. 1.

Fig. 8 is a partially enlarged schematic view of fig. 7.

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 shown in fig. 1.

Fig. 1 is a schematic perspective view of a part of components 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 partially enlarged rear view schematic diagram of a part of components of the refrigerator 100 shown in fig. 1. Fig. 4 is a partially enlarged cross-sectional view taken along line a-a in fig. 2. Fig. 5 is a partially enlarged cross-sectional view taken along line B-B in fig. 2. Fig. 6 is a rear view schematically illustrating part of components of a refrigerator 100 according to another embodiment of the present invention.

The refrigerator 100 of the embodiment of the present invention may generally include: a cabinet 101 and at least two sets of stirling refrigeration systems. A storage compartment is defined in the case 101. Each storage compartment is respectively configured to provide refrigeration using a stirling refrigeration system. Each set of stirling refrigeration systems is configured to provide refrigeration to at least one storage compartment, and each set of stirling refrigeration systems includes a stirling cooler 300. Wherein, the rear bottom of the box 101 is formed with a device chamber 102, and at least one stirling cooler 300 is disposed in the device chamber 102. The refrigerator 100 provided by the embodiment of the utility model is provided with at least two groups of Stirling refrigerating systems, and each storage chamber utilizes the Stirling refrigerating system to provide cold, so that the problem of refrigerant leakage which possibly occurs when a vapor compression refrigerating system is adopted for refrigeration is avoided, and the preservation temperature of each storage chamber can reach ultralow temperature, thereby being more beneficial to food material storage; by configuring each group of Stirling refrigeration systems to provide cold energy for at least one storage chamber, the number of the Stirling refrigeration systems can be smaller than that of the storage chambers, and the overall vibration noise is reduced; by forming the device chamber 102 at the bottom of the rear side of the cabinet 101 and disposing at least one stirling cooler 300 in the device chamber 102, the arrangement and layout of the stirling coolers 300 can be facilitated, and the stirling cooler 300 is located away from the front side of the refrigerator 100, which can reduce noise transmission.

The box 101 may include a housing, a liner disposed in the housing, and a heat insulating layer disposed between the housing and the liner, wherein the liner defines a storage compartment. The storage chamber utilizes a Stirling refrigerating system for cooling, so that the storage temperature of the storage chamber can reach-80 ℃. The target preservation temperature range of each storage compartment can be set as required. In the embodiment shown in fig. 1, the refrigerator 100 is a cross-door refrigerator, the storage compartment includes a first compartment 111 located at the upper part, a second compartment 112 located at the lower part right side, a third compartment 113 located at the lower part left side lower part, and a fourth compartment 114 located at the lower part left side upper part, and the first compartment 111 can be used as a cold storage compartment, the second compartment 112 can be used as a freezing compartment, the third compartment 113 can be used as an ultra-low temperature compartment, and the fourth compartment 114 can be used as a temperature changing compartment.

Referring to fig. 2 to 5, the stirling cooler 300 may include a casing, a cylinder (not shown), a piston (not shown), and a driving mechanism (not shown) for driving the piston to move. The housing may be composed of a main body 301 and a cylindrical portion 302. The driving mechanism may be disposed within the body portion 301. The piston may be arranged to reciprocate within the cylindrical portion 302 to form a cold end of the stirling cooler 300 at an end of the cylindrical portion 302 remote from the body portion 301 and a hot end of the stirling cooler 300 at an end adjacent the body portion 301. The stirling cooler 300 may be secured within the device chamber 102 by springs, shock mounts, or the like.

In some embodiments, each set of stirling refrigeration systems further includes a heat exchanger 305 and a cold sink 303. The heat exchanger 305 is provided in the storage compartment. The cold guiding device 303 includes a cold end adapter 331 and a cold guiding heat pipe 332, the cold end adapter 331 is fixed to the cold end of the stirling cooler 300, one end of the cold guiding heat pipe 332 is thermally connected to the cold end adapter 331, and the other end is thermally connected to the heat exchanger 305. The utility model discloses every group stirling refrigerating system of refrigerator 100 still includes heat exchanger 305 and leads cold charge and put 303, sets up heat exchanger 305 indoor between the storing, utilizes the cold charge that leads cold charge and put 303 including cold junction adapter 331 and lead cold heat pipe 332 to realize stirling refrigerator 300's cold junction and heat exchanger 305's thermal connection, can make and pass cold structure firm, reliable, passes cold efficiently simultaneously. A heat insulating member 306 may be provided outside the cooling guide 303.

In some embodiments, the heat exchanger 305 includes a plurality of first cooling guide fins 351 spaced apart from each other, and an air flow channel is defined between adjacent first cooling guide fins 351, wherein the cooling guide heat pipe 332 is disposed through the plurality of first cooling guide fins 351. The utility model discloses refrigerator 100 can realize the heat transfer of large tracts of land, improves heat exchange efficiency through setting heat exchanger 305 to the first cold fin 351 that leads that includes a plurality of intervals setting. As shown in fig. 5, a heat exchanger 305 including a plurality of first cooling guide fins 351 is provided in the second compartment 112.

In other embodiments, the heat exchanger 305 includes a cold conducting plate 350 and a plurality of second cold conducting fins 352, the second cold conducting fins 352 extend forward from the front surface of the cold conducting plate 350, and air flow passages are defined between adjacent second cold conducting fins 352, wherein the cold conducting heat pipes 332 are fixed to the cold conducting plate 350. The utility model discloses refrigerator 100 can realize the large tracts of land heat transfer through leading cold plate 350 and the second of a plurality of interval settings to lead cold fin 352 with heat exchanger 305 sets up, improves heat exchange efficiency, leads cold heat pipe 332 and heat exchanger 305's fixed simpler simultaneously to more convenient the maintenance. As shown in fig. 4, a heat exchanger 305 including a cooling guide plate 350 and a plurality of second cooling guide fins 352 is provided in the third compartment 113.

With reference to fig. 4, an air duct cover 106 is disposed on the inner side of the rear wall of the third compartment 113, an air supply outlet is disposed on the upper portion of the air duct cover 106, an air return outlet is disposed on the lower portion of the air duct cover 106, an accommodating space is defined between the air duct cover 106 and the inner container of the third compartment 113, the heat exchanger 305 is disposed in the accommodating space, and the air flow channel extends in the up-down direction, and the air flow flowing into the accommodating space from the air return outlet passes through the heat exchanger 305 from the bottom to the top, so as to form a structure of air return from the bottom to the top in the third compartment 113. In addition, a blowing fan 107 may be provided at the blowing port to promote airflow.

In some embodiments, at least one set of stirling refrigeration systems is configured to provide refrigeration to at least two storage compartments; wherein the heat exchanger 305 of the stirling refrigeration system is disposed within a storage compartment. The utility model discloses refrigerator 100 still includes at least one air supply wind channel 103, and wherein the room between the storing that has set up heat exchanger 305 is connected to the one end in air supply wind channel 103, and the room between the storing that does not set up heat exchanger 305 is connected to the other end to realize that a set of stirling refrigerating system provides cold volume to room between at least two storing. As shown in fig. 2 and 3, one set of stirling cooling systems provides cooling only to the third compartment 113, and the other set of stirling cooling systems provides cooling to the first compartment 111, the second compartment 112, and the fourth compartment 114. The heat exchanger 305 of the last group of stirling refrigerating systems is arranged in the second compartment 112, the refrigerator 100 is provided with two air supply ducts 103, one end of one air supply duct 103 is connected with the second compartment 112, and the other end is connected with the first compartment 111; one end of the other air supply duct 103 is connected to the second compartment 112, and the other end is connected to the fourth compartment 114.

In some embodiments, the refrigerator 100 of the present invention further includes: at least one air door (not shown in the figure) is arranged in each air supply duct 103 and used for controlling the on-off of the air supply duct 103. The air flow of the air supply duct 103 can be effectively and simply adjusted by setting the air door.

In some embodiments, the refrigerator 100 of the present invention further includes: and at least one return air duct 104, wherein one end of the return air duct 104 is connected to the storage region of the storage compartment where the heat exchanger 305 is not provided, and the other end is connected to the storage compartment where the heat exchanger 305 is provided. As shown in fig. 2 and 3, the refrigerator 100 has two return air ducts 104, wherein one end of one return air duct 104 is connected to the storage region of the first compartment 111, and the other end is connected to the second compartment 112; one end of the other return air duct 104 is connected to the storage region of the fourth compartment 114, and the other end is connected to the second compartment 112, so that the air flow in the storage regions of the first compartment 111 and the fourth compartment 114 is returned to the second compartment 112 for heat exchange.

In other embodiments, each storage compartment corresponds to a respective set of stirling refrigeration systems. That is, each set of stirling refrigeration systems is configured to provide cooling energy to one of the storage compartments in which the heat exchanger 305 of its corresponding stirling refrigeration system is disposed. The utility model discloses refrigerator 100 can need not to set up air supply duct 103 etc. through configuring a set of stirling refrigerating system to every storing compartment, nevertheless probably can make the noise increase simultaneously. In order to shorten the cooling distance, the stirling cooler 300 corresponding to the storage compartment located at the upper portion is disposed at the top of the cabinet 101; the stirling cooler 300 corresponding to the lower storage compartment is disposed in the device chamber 102. In the embodiment shown in fig. 6, the refrigerator 100 is also a cross-door refrigerator, but the storage compartments include a first compartment 111 located at the upper portion, a second compartment 112 located at the lower right side, and a third compartment 113 located at the lower left side. A shelf is provided above the inner container of the first compartment 111 to form a receiving space in which the stirling cooler 300 of the stirling refrigerating system corresponding to the first compartment 111 is placed at the top of the cabinet 101. And the stirling coolers 300 of the stirling cooling system corresponding to the second and third compartments 112 and 113 are disposed at intervals in the lateral direction in the device chamber 102. By locating both stirling coolers 300 within the device chamber 102, the component layout of the refrigerator 100 may also be made more compact while facilitating ease of assembly and maintenance.

To ensure heat dissipation from the stirling cooler 300, each stirling cooler group further includes a heat sink 304. The device chamber 102 is generally provided with ventilation openings at the lower portions of the two side walls thereof, respectively, to further facilitate the air flow. Similarly, a vent hole may be formed in the rear back plate of the housing 101 corresponding to the device chamber 102.

As shown in fig. 2, in some embodiments, the heat dissipation device 304 includes a hot end adapter 341, a heat-conducting heat pipe 342, and a heat dissipation fin 343, wherein the hot end adapter 341 is thermally connected to the hot end, one end of the heat-conducting heat pipe 342 is thermally connected to the hot end adapter 341, and the other end is inserted into the heat dissipation fin 343. The utility model discloses heat abstractor 304 of refrigerator 100 is through setting to including hot end adapter 341, heat conduction heat pipe 342 and radiating fin 343, with hot end adapter 341 and the fixed hot junction of hot junction, with the one end and the fixed hot junction of hot end adapter 341 of heat conduction heat pipe 342, the other end is inserted and is located radiating fin 343, can make stirling refrigerator 300's heat transfer to radiating fin 343 department effectively, and heat abstractor 304's structure is assembled easily simultaneously, and the structure is firm.

As shown in fig. 2 and fig. 5, in other embodiments, the heat dissipation device 304 includes a heat dissipation fan 361 and a fin heat sink 362, an opening is formed on a sidewall of the main body 301, and the heat dissipation fan 361 is disposed at the opening; the fin radiator 362 is disposed around the hot end and fixed to the body 301. The heat dissipation device 304 of the refrigerator 100 according to the embodiment of the present invention can effectively dissipate heat of the driving mechanism by providing the heat dissipation fan 361 on the main body 301; through set up fin radiator 362 in hot junction a week, can realize effectively dispelling the heat to the hot junction, the setting and the casing of while cooling fan 361 and fin radiator 362 are integrative, can the modularization assembly and more convenient transportation.

As shown in fig. 2 and 6, when there are at least two stirling coolers 300 in the device chamber, a partition 105 is provided between the adjacent stirling coolers 300. By separating the two stirling coolers 300 by the partition plate 105, the heat dissipation areas of the two stirling coolers 300 can be separated, and the heat of the two stirling coolers 300 can be prevented from affecting each other, thereby facilitating heat dissipation.

Fig. 7 is an exploded schematic view of the double door 400 and the door frame 430 of the refrigerator 100 shown in fig. 1. Fig. 8 is a partially enlarged schematic view of fig. 7. A double door 400 is provided at a front side of the storage compartment of the refrigerator 100 to enhance a heat insulation effect of the refrigerator 100. The double door 400 may be provided at the front side of each storage compartment, or the double door 400 may be provided at the front side of a part of the storage compartments. As shown in fig. 1, a double door 400 is provided at the front side of the fourth compartment 114 and the third compartment 113 located at the lower left side. In some embodiments, the double door 400 includes an outer door body 401 and an inner door body 402; the inner door 402 is located inside the outer door 401, is disposed in front of the third chamber 113, and opens and closes the third chamber 113; and the outer door body 401 and the inner door body 402 are provided independently of each other so that the inner door body 402 remains closed while the outer door body 401 is opened outward. The preservation temperature of the third compartment 113 is relatively low, when the third compartment 113 and the fourth compartment 114 share the same outer door body 401, the double-layer door 400 is set to include the outer door body 401 and the inner door body 402 which are independent of each other, the size of the outer door body 401 is larger than that of the inner door body 402, and the fourth compartment 114 is opened and closed by the outer door body 401, so that when a user takes and places articles from and in the fourth compartment 114, the inner door body 402 can be kept in a closed state in a state that the outer door body 401 is opened, that is, the third compartment 113 is still sealed, and cold leakage can be effectively reduced. The distance between the inner door body 402 and the outer door body 401 is not more than 5 mm. The distance is too large, and the frosting risk is large. In addition, the outer surface of the inner door 402 may be provided with a heating wire, which may be intermittently turned on or turned on depending on conditions. Meanwhile, in order to ensure that the outer side of the inner door body 402 does not frost, a vacuum heat insulation board can be further arranged inside the inner door body 402, so that the temperature of the outer surface of the inner door body 402 is higher than 0 ℃. In order to overcome the negative pressure problem of the third chamber 113, a pressure balance hole may be further formed on the door seal of the inner door 402 to ensure that the inner door 402 can be opened smoothly.

The embodiment of the utility model provides a refrigerator 100 still includes: a door frame 430 and a mechanical locking mechanism. The door frame 430 is provided at the front of the case 101 of the third compartment 113. One end of the inner door 402 is connected to the cabinet 101, and the other end is detachably connected to the door frame 430 by a mechanical locking mechanism. The inner door 402 can be embedded in the case 101 by providing a separate door frame 430 in the front of the case 101 in the third compartment 113. A seal strip is provided between the inner door body 402 and the door frame 430. Specifically, in order to ensure the sealing performance of the inner door body 402, a sealing strip is provided at the mating surface of the inner door body 402 and the door frame 430, and a sealing strip is also provided at the convex portion of the inner door body 402, i.e., a double door seal, which reduces the gap between the inner door body 402 and the door frame 430. Meanwhile, in order to prevent cold leakage, a seal may be provided between the upper portion of the inner door body 402 and the fourth compartment 114.

In some embodiments, the inner door 402 and the chest 101 may be connected by at least two hinges 450. By connecting the inner door 402 to the box 101 with the hinge 450, the angle of the inner door 402 when opened can be ensured to reach 90 °. In the embodiment shown in FIG. 7, the inner door 402 is attached to the cabinet 101 by two hinges 450.

In some embodiments, the front end surface of the door frame 430 is formed with a locking groove 431. The mechanical locking mechanism comprises a first structural member 501, a second structural member 502, a third structural member 503 and a rotating rod 504, wherein a clamping joint 5121 is formed on a side end plate 512 of the first structural member 501, and the first structural member 501 is rotatably connected with the side end surface of the inner door body 402 through the third structural member 503 and the rotating rod 504; the second structural member 502 is connected to the door frame 430 and has a protrusion 521 extending to the slot 431. The inner door body 402 and the door frame 430 are hermetically fixed by moving the clamping head 5121 into the clamping groove 431 and fitting the bulge 521, and the inner door body 402 and the door frame 430 are separated by moving the clamping head 5121 out of the clamping groove 431. Through set up draw-in groove 431 on door frame 430, utilize the joint 5121 of mechanical locking mechanism to realize the fixed and separation of interior door body 402 and door frame 430, also realize closing and opening of interior door body 402, the structure is ingenious, conveniently controls. Referring to fig. 8, the first structure 501 includes a front end plate 511 and a side end plate 512, and a through hole matching with the first rod (not shown) of the rotating rod 504 is formed on the side end plate 512. The third structural member 503 includes a front end plate and a side end plate, the side end plate is fixed to the inner door 402 by two mounting holes and a fixing member 530, a through hole for the rotating rod 504 to pass through is also formed between the two mounting holes corresponding to the through hole of the first structural member 501, and the through hole of the third structural member 503 is matched with the second rod portion (not shown in the figure) of the rotating rod 504. And the outer diameter of the first rod part of the rotating rod 504 is larger than that of the second rod part, that is, the outer diameter of the contact area of the rotating rod 504 and the first structural member 501 is larger than that of the contact area of the rotating rod 504 and the third structural member 503, so that the first structural member 501 can be connected with the inner door body 402 and can rotate at the same time. In addition, in order to make the installation of the third structural member 503 and the inner door 402 more stable, a gasket may be provided under the side end plate of the third structural member 503. In the embodiment shown in fig. 8, the first structural member 501 rotates in the front-rear direction, the latch 5121 is formed to extend downward and rearward, and the second structural member 502 has a flat plate portion provided with a mounting hole and a protrusion 521 extending upward from the flat plate portion. It is understood that the first structural member 501 may also be rotated in the up-down direction, in which case the locking groove 431 may be opened in the left-right direction, and the protrusion 521 may extend leftwards or rightwards. In some embodiments, the front end surface of the inner door body 402 is formed with a recess 421; the front end plate 511 of the first structural member 501 extends into the recess 421, and the front side is provided with an indication plate 422. The front end plate 511 of the first structural member 501 is located in the concave portion 421, and can be used as a handle, so that the operation of a user is facilitated, the operation direction of the user can be reminded by arranging the indicating plate 422, and the use experience of the user is improved.

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 storage compartment and a storage box, wherein the refrigerator body is internally limited with the storage compartment; and

at least two groups of Stirling refrigerating systems, wherein each storage chamber is respectively configured to provide cold energy by using the Stirling refrigerating systems, each group of Stirling refrigerating systems is respectively configured to provide cold energy to at least one storage chamber, and each group of Stirling refrigerating systems respectively comprises a Stirling refrigerator; wherein a device chamber is formed at the bottom of the rear side of the box body, and at least one Stirling refrigerator is arranged in the device chamber.

2. The refrigerator according to claim 1,

each group of the Stirling refrigerating systems also comprises a heat exchanger and a cold guide device, wherein

The heat exchanger is arranged in the storage room;

the cold guide device comprises a cold end adapter and a cold guide heat pipe, the cold end adapter is fixed with the cold end of the Stirling refrigerator, one end of the cold guide heat pipe is thermally connected with the cold end adapter, and the other end of the cold guide heat pipe is thermally connected with the heat exchanger.

3. The refrigerator according to claim 2,

the heat exchanger comprises a plurality of first cold guide fins arranged at intervals, and an air outlet channel is defined between every two adjacent first cold guide fins, wherein the cold guide heat pipe penetrates through the plurality of first cold guide fins; or

The heat exchanger comprises a cold guide plate and a plurality of second cold guide fins, wherein the second cold guide fins are formed by extending forwards from the front surface of the cold guide plate, an air outlet channel is defined between the adjacent second cold guide fins, and the cold guide heat pipe is fixed with the cold guide plate.

4. The refrigerator according to claim 2,

at least one group of the Stirling refrigerating systems is configured to provide cold for at least two storage compartments; wherein

The heat exchanger of the Stirling refrigeration system is arranged in one storage room;

the refrigerator also comprises at least one air supply duct, wherein one end of the air supply duct is connected with the storage compartment provided with the heat exchanger, and the other end of the air supply duct is connected with the storage compartment not provided with the heat exchanger, so that a group of Stirling refrigerating systems can provide cold for at least two storage compartments.

5. The refrigerator of claim 4, further comprising:

and each air supply duct is internally provided with one air door for controlling the on-off of the air supply duct.

6. The refrigerator of claim 4, further comprising:

and one end of the return air duct is connected with a storage area of the storage room which is not provided with the heat exchanger, and the other end of the return air duct is connected with the storage room which is provided with the heat exchanger.

7. The refrigerator according to claim 2,

each storage chamber corresponds to one group of Stirling refrigeration systems; wherein

The Stirling refrigerating machine corresponding to the storage compartment at the upper part is arranged at the top of the box body; the Stirling refrigerating machines corresponding to the storage chambers positioned at the lower part are arranged in the device chambers.

8. The refrigerator according to claim 1,

when at least two Stirling refrigerators are arranged in the device chamber, a partition plate is arranged between every two adjacent Stirling refrigerators.

9. The refrigerator according to claim 1,

the Stirling refrigerator comprises a shell, a cylinder, a piston and a driving mechanism; the casing comprises a main body part and a cylindrical part, the driving mechanism is arranged in the main body part, the piston is configured to be driven by the driving mechanism to reciprocate in the cylindrical part, so that a cold end is formed at one end of the cylindrical part, which is far away from the main body part, and a hot end is formed at one end of the cylindrical part, which is close to the main body part.

10. The refrigerator according to claim 9,

each group of the Stirling refrigeration systems further comprises a heat dissipation device; wherein

The heat dissipation device comprises a hot end adapter, a heat conduction heat pipe and a heat dissipation fin, wherein the hot end adapter is in thermal connection with the hot end, one end of the heat conduction heat pipe is in thermal connection with the hot end adapter, and the other end of the heat conduction heat pipe is inserted into the heat dissipation fin; or

The heat dissipation device comprises a heat dissipation fan and a fin radiator, an opening is formed in the side wall of the main body part, and the heat dissipation fan is arranged at the opening; the fin radiator is arranged on the periphery of the hot end and fixed with the main body part.

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