CN214276200U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, include: the refrigerator comprises a box body and a deep cooling inner container, wherein a deep cooling chamber is limited in the deep cooling inner container; a Stirling refrigeration system configured to provide cold to the cryogenic compartment; and the vapor compression refrigerating system comprises an evaporator, wherein the evaporator is attached to the outer side of the cryogenic inner container to realize that the vapor compression refrigerating system provides cold for the cryogenic compartment. The refrigerator of the utility model can supply cold to the deep cooling chamber by arranging the Stirling refrigerating system and the vapor compression refrigerating system, so that the preservation temperature of the deep cooling chamber is widened, and the refrigerator can be used for refrigerating, freezing or ultra-low temperature freezing food materials; the evaporator of the vapor compression refrigerating system is attached to the outer side of the deep cooling inner container to supply cold to the deep cooling chamber, and the vapor compression refrigerating system is ingenious in structure and easy to set.

Description

Refrigerator with a door

Technical Field

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

Background

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 ℃. The cryogenic compartment of the existing household refrigerator adopting Stirling refrigeration is only cooled by a Stirling refrigeration system, so that the preservation temperature of the compartment is generally between-14 ℃ and-80 ℃, and the compartment can only be used as frozen food materials.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can widen the refrigerator of the temperature of preserving of cryrogenic compartment.

A further object of the utility model is to provide a refrigerator that usable stirling refrigerating system of cryrogenic compartment and vapor compression refrigerating system refrigerate jointly and the structure is ingenious, set up easily.

Particularly, the utility model provides a refrigerator, include:

the refrigerator comprises a box body and a deep cooling inner container, wherein a deep cooling chamber is limited in the deep cooling inner container;

a Stirling refrigeration system configured to provide cooling to the cryogenic compartment; and

the vapor compression refrigerating system comprises an evaporator, wherein the evaporator is arranged close to the outer side of the deep cooling inner container so as to realize that the vapor compression refrigerating system provides cold energy for the deep cooling chamber.

Optionally, the stirling refrigeration system comprises a stirling cooler and a heat exchanger; wherein

The Stirling refrigerating machine is arranged outside the cryogenic inner container, the heat exchanger is arranged in the cryogenic inner container, and the heat exchanger is thermally connected with the cold end of the Stirling refrigerating machine to realize that the Stirling refrigerating system provides cold for the cryogenic chamber.

Optionally, the heat exchanger is arranged inside the rear wall of the cryogenic inner container;

the evaporator is arranged close to the outer side of the bottom wall of the deep cooling inner container.

Optionally, a first heating wire is arranged on the evaporator and used for defrosting;

and a first water receiving tray is arranged on the outer side of the bottom wall of the deep cooling inner container behind the evaporator and used for receiving defrosting water of the evaporator.

Optionally, the bottom wall of the deep cooling inner container is provided with a slope structure which inclines downwards from front to back.

Optionally, the included angle between the inclined plane of the bottom wall of the cryogenic liner and the horizontal plane is 3-10 degrees.

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

a first drainage port is formed in the first water receiving disc, a first drainage pipe is connected to the first drainage port, and the other end of the first drainage pipe extends into an evaporation pan located in the device chamber.

Optionally, a second heating wire is arranged on the heat exchanger for defrosting;

the bottom of the inner side of the rear wall of the deep cooling liner is also provided with a second water receiving disc for receiving defrosting water of the heat exchanger;

and a second water outlet is formed in the second water receiving disc, a second water discharge pipe is connected to the second water discharge port, and the other end of the second water discharge pipe extends into the evaporating dish.

Optionally, the heat exchanger comprises a cold guide plate and a plurality of cooling guide fins arranged at intervals, the plurality of cooling guide fins extend forwards from the front surface of the cold guide plate to form, and air outlet channels are defined between the adjacent cooling guide fins;

the Stirling refrigerating system further comprises a cold guide device, 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 rear surface of the cold guide plate.

Optionally, the evaporator includes a first heat exchange plate, a second heat exchange plate, and a heat exchange tube, a portion of which is sandwiched between the first heat exchange plate and the second heat exchange plate, and a refrigerant flows through the heat exchange tube, and the first heat exchange plate or the second heat exchange plate is disposed adjacent to the outer side of the deep cooling inner container.

The refrigerator of the utility model can supply cold to the deep cooling chamber by arranging the Stirling refrigerating system and the vapor compression refrigerating system, so that the preservation temperature of the deep cooling chamber is widened, and the refrigerator can be used for refrigerating, freezing or ultra-low temperature freezing food materials; the evaporator of the vapor compression refrigerating system is attached to the outer side of the deep cooling inner container to supply cold to the deep cooling chamber, and the vapor compression refrigerating system is ingenious in structure and easy to set.

Furthermore, the refrigerator of the utility model arranges the heat exchanger at the inner side of the back wall of the deep cooling inner container and arranges the evaporator close to the outer side of the bottom wall of the deep cooling inner container, so that the arrangement of the cooling parts of the deep cooling chamber is reasonable, and the Stirling refrigerating system and the vapor compression refrigerating system do not influence each other; when the Stirling refrigerating system and the vapor compression refrigerating system are used for refrigerating at the same time, the heat exchanger supplies cold from back to front and the evaporator supplies cold from bottom to top, so that the multi-direction simultaneous cooling of the deep cooling chamber can be realized, and the refrigerating efficiency is improved.

Furthermore, the first water pan is arranged at the rear part of the evaporator of the refrigerator, and the bottom wall of the deep cooling liner is arranged to be of an inclined plane structure which inclines downwards from front to back, so that the flowing and the discharging of the defrosting water can be facilitated; by guiding both the first drain pipe and the second drain pipe into the evaporating dish in the device chamber, the overall parts of the refrigerator can be reduced and the layout is compact and beautiful.

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 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 perspective view of a part of components of the refrigerator shown in fig. 2.

Fig. 4 is a perspective view of the stirling refrigeration system of the refrigerator shown in fig. 1.

Fig. 5 is an exploded schematic view of a double door and a door frame of the refrigerator shown in fig. 1.

Fig. 6 is a partially enlarged schematic view of fig. 5.

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, and "front", "rear", "upper", "lower", "left", "right" is a direction as indicated in fig. 1.

Fig. 1 is a 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 perspective view of a part of components of the refrigerator 100 shown in fig. 2. Fig. 4 is a perspective view of the stirling refrigeration system of the refrigerator 100 shown in fig. 1.

The refrigerator 100 of the embodiment of the present invention may generally include: a cabinet 101, a stirling refrigeration system, and a vapor compression refrigeration system. 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 defines a storage compartment, and the refrigerator 100 may include at least one common inner container 111 and at least one cryogenic inner container 113, wherein the common inner container 111 defines the common compartment and the cryogenic inner container 113 defines the cryogenic compartment. Herein, the "normal inner container 111" refers to an inner container other than the deep cooling inner container 113, such as a refrigerating inner container, a freezing inner container, and a temperature changing inner container. Correspondingly, the "ordinary compartment" refers to other non-ultralow temperature compartments which do not use the stirling refrigerating system for cooling except the cryogenic compartment and cannot realize ultralow temperature, such as a refrigerating compartment, a freezing compartment and a temperature-changing compartment, and are respectively defined by a refrigerating liner, a freezing liner and a temperature-changing liner. The preservation temperature of the cold storage chamber can be 4-7 ℃ generally, and the preservation temperature of the freezing chamber can be-20-16 ℃ generally. The temperature-changing chamber can be adjusted according to requirements and used as a refrigerating chamber or a freezing chamber. A cryogenic compartment is a compartment that is cooled at least by a stirling refrigeration system. In the refrigerator 100 of the embodiment of the present invention, the stirling refrigeration system is configured to provide cooling energy to the cryogenic compartment; the vapor compression refrigeration system includes an evaporator 203, wherein the evaporator 203 is positioned against the outside of the cryogenic inner tank 113 to achieve that the vapor compression refrigeration system provides cold to the cryogenic compartment. That is, the cryogenic compartment of the refrigerator 100 according to the embodiment of the present invention may be cooled by one or both of the stirling refrigeration system and the vapor compression refrigeration system. Thus, the utility model discloses refrigerator 100's cryrogenic compartment has three kinds of refrigeration modes, and the first kind is only to utilize stirling refrigerating system to refrigerate, and the second kind is only to utilize vapor compression refrigerating system to refrigerate, and the third kind is to utilize stirling refrigerating system and vapor compression refrigerating system to refrigerate simultaneously, and two refrigerating system can complement each other. Therefore, the preservation temperature range of the deep cooling chamber can be further widened, so that the preservation temperature of the deep cooling chamber can be changed in a wide temperature range from 4 ℃ to-80 ℃, and three functions of refrigeration, freezing and ultralow temperature freezing can be realized. The deep cooling chamber of the refrigerator 100 according to the embodiment of the present invention may further be provided with a switching temperature, and when the temperature of the deep cooling chamber is higher than the switching temperature, the vapor compression refrigeration system supplies cold; when the temperature of the compartment of the cryogenic compartment is lower than the switching temperature, cooling is supplied by the Stirling refrigeration system. The switching temperature may be, for example, -25 ℃.

The refrigerator 100 of the embodiment of the present invention can supply cold to the cryogenic compartment by setting both the stirling refrigeration system and the vapor compression refrigeration system, so that the preservation temperature of the cryogenic compartment is widened, and the refrigerator can be used for refrigerating, freezing or freezing food materials at ultra-low temperature; the evaporator 203 of the vapor compression refrigeration system is attached to the outer side of the deep cooling inner container 113 to realize that the vapor compression refrigeration system provides cold energy for the deep cooling chamber, and the structure is ingenious and easy to arrange; in addition, when the cryogenic compartment needs to be rapidly cooled, the Stirling refrigeration system and the vapor compression refrigeration system can be used simultaneously to provide cold for the cryogenic compartment, and the refrigeration efficiency is improved.

In some embodiments, as shown in fig. 3, evaporator 203 may be a plate-and-tube evaporator, and includes a first heat exchange plate 231, a second heat exchange plate 232, and a heat exchange tube 233 partially sandwiched between first heat exchange plate 231 and second heat exchange plate 232 and having a refrigerant flowing therein, where first heat exchange plate 231 or second heat exchange plate 232 is disposed against an outer side of cryogenic inner container 113. By arranging the evaporator 203 to have a plate-tube structure, the evaporator 203 can be in surface contact with the cryogenic inner container 113, so that the cold transfer effect between the evaporator 203 and the cryogenic inner container 113 is good. Both ends of the heat exchange tube 233 are connected to the vapor compression refrigeration system, respectively. The vapour compression refrigeration system further comprises a compressor 201, a condenser 202, a throttling element etc. As shown in fig. 1, an appliance chamber 102 is defined at the bottom of the rear side of a cabinet 101 of a refrigerator 100, and a compressor 201 and a condenser 202 are provided at intervals in the appliance chamber 102. In addition, a heat dissipation fan may be disposed between the compressor 201 and the condenser 202 to facilitate heat dissipation of the compressor 201. In the refrigerator 100 of the embodiment of the present invention, the common compartment defined by the common inner container 111 may be cooled by a vapor compression refrigeration system. The vapor compression refrigeration system may also include a plurality of second evaporators (not shown), which may be generally finned evaporators. The second evaporator can be correspondingly arranged in each common chamber, or the second evaporator can be arranged in some common chambers, and the second evaporator is not independently arranged in other common chambers, but an air supply duct is arranged for cooling. For example, one end of the air supply duct is connected to a common chamber in which the second evaporator is disposed, and the other end is connected to a common chamber in which the second evaporator is not disposed.

The stirling refrigeration system includes a stirling cooler 300 and a heat exchanger 305. The Stirling refrigerator 300 is arranged outside the cryogenic inner container 113, the heat exchanger 305 is arranged in the cryogenic inner container 113, and the heat exchanger 305 is thermally connected with the cold end of the Stirling refrigerator 300 to realize that the Stirling refrigerating system provides cold for the cryogenic chamber. Referring to fig. 1-3, a stirling cooler 300 is also disposed within the device chamber 102, behind the cryogenic compartment. The stirling cooler 300 may include a housing, a cylinder, a piston, and a drive mechanism to drive the piston in motion. 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 cylinder portion 302 to form a cold end and a hot end. The stirling cooler 300 may be secured within the device chamber 102 by springs, shock mounts, or the like.

In some embodiments, heat exchanger 305 is disposed inside the rear wall of cryogenic inner bladder 113; evaporator 203 is disposed against the outside of the bottom wall of cryogenic tank 113. The refrigerator 100 of the embodiment of the present invention arranges the heat exchanger 305 inside the rear wall of the cryogenic inner container 113, and arranges the evaporator 203 against the outside of the bottom wall of the cryogenic inner container 113, so that the arrangement of the cooling components of the cryogenic compartment is reasonable, and the stirling refrigeration system and the vapor compression refrigeration system do not affect each other; when the Stirling refrigeration system and the vapor compression refrigeration system are used for refrigeration at the same time, the heat exchanger 305 supplies cold from back to front and the evaporator 203 supplies cold from bottom to top, so that the multi-direction simultaneous cooling of the deep cooling chamber can be realized, and the refrigeration efficiency is improved; meanwhile, the heat exchanger 305 is arranged on the inner side of the rear wall of the deep cooling inner container 113, so that the distance between the heat exchanger and the Stirling refrigerator 300 can be shortened, the cold transmission distance is further reduced, the cold loss is reduced, and the cold transmission effect is enhanced.

In some embodiments, a first heating wire 234 is provided on the evaporator 203 for defrosting; the outer side of the bottom wall of the deep cooling inner container 113 is also provided with a first water receiving tray 611 at the rear of the evaporator 203 for receiving the defrosting water of the evaporator 203. A first drain port is formed in the first water receiving tray 611, a first drain pipe 612 is connected to the first drain port, and the other end of the first drain pipe 612 extends into the evaporation pan 603 located in the device chamber 102. As shown in fig. 3, the portion of the heat exchange tube 233 sandwiched between the first heat exchange plate 231 and the second heat exchange plate 232 may be arranged to be bent back and forth, so as to increase the length of the heat exchange tube 233 between the first heat exchange plate 231 and the second heat exchange plate 232. The first heating wire 234 may be an aluminum pipe heating wire, and the first heating wire 234 may be arranged at the bottom of the second heat exchange plate 232 while being bent back and forth corresponding to the heat exchange pipe 233, so as to better defrost. The first heating wire 234 may also be an aluminum foil heating wire, and a planar aluminum foil heating wire is attached to the bottom of the evaporator 203 to achieve defrosting. The first water receiving tray 611 may be designed to receive defrosting water, and may be designed with reference to a water receiving tray structure of an existing refrigerator, which is not limited herein.

In some embodiments, the bottom wall of cryogenic inner tank 113 has a ramp structure that slopes downward from front to back. The utility model discloses refrigerator 100 sets up first water collector 611 at evaporimeter 203 rear, sets to have by the inclined plane structure of preceding backward downward sloping through the diapire with cryrogenic inner bag 113, laminates in the evaporimeter 203 in the diapire outside correspondingly and forms the inclined plane structure promptly, can conveniently change the flow and the discharge of frost water. More preferably, the inclined plane of the bottom wall of cryogenic inner container 113 has an angle of 3 ° to 10 ° with the horizontal plane. The inclination angle can facilitate the flow of defrosting water in the range, and meanwhile, the influence on the configuration of components inside the deep cooling chamber can be reduced, for example, the size and the assembly structure of a drawer in the deep cooling chamber only need to be finely adjusted or even do not need to be adjusted, so that the process change can be further reduced, and the cost is reduced.

In some embodiments, a second heating wire 353 is provided on the heat exchanger 305 for defrosting; the bottom of the inner side of the rear wall of the deep cooling inner container 113 is also provided with a second water receiving tray 621 for receiving defrosting water of the heat exchanger 305; a second water outlet is formed in the second water receiving tray 621, a second water discharging pipe 622 is connected to the second water outlet, and the other end of the second water discharging pipe 622 extends into the evaporating dish 603. The utility model discloses a refrigerator 100 is through all leading first drain pipe 612 and second drain pipe 622 to the evaporating dish 603 that is located device room 102 in, can make refrigerator 100's whole parts reduce and overall arrangement compactness, pleasing to the eye.

In some embodiments, as shown in FIG. 4, the heat exchanger 305 includes a cold plate 351 and a plurality of spaced apart cold guide fins 352, the plurality of cold guide fins 352 extending forwardly from a front surface of the cold plate 351, adjacent cold guide fins 352 defining air flow passages therebetween. The Stirling refrigerating system further comprises a cold guide device 303, wherein the cold guide device 303 comprises a cold end adapter 331 and a cold guide heat pipe 332, the cold end adapter 331 is fixed with the cold end of the Stirling refrigerator 300, one end of the cold guide heat pipe 332 is thermally connected with the cold end adapter 331, and the other end of the cold guide heat pipe 332 is thermally connected with the rear surface of the cold guide plate 351. The utility model discloses refrigerator 100 can realize the large tracts of land heat transfer through setting heat exchanger 305 to including leading cold drawing 351 and the cold fin 352 of leading that a plurality of intervals set up, improves heat exchange efficiency. The second heating wire 353 may be an aluminum tube heating wire, and is disposed between the plurality of cooling fins 352 in a winding manner. In the refrigerator 100 shown in fig. 1, an air duct cover (not shown) is further disposed inside a rear wall of the deep cooling inner container 113, and an accommodating space is defined between the air duct cover and the deep cooling inner container 113. The upper part of the air duct cover plate is provided with an air supply outlet, and the lower part of the air duct cover plate is provided with an air return inlet. The heat exchanger 305 is disposed in the accommodating space, and the airflow channel extends substantially in the vertical direction, and the airflow flowing into the accommodating space from the return air inlet passes through the heat exchanger 305 from bottom to top, thereby forming a structure in which the air is returned downward and discharged upward in the deep cooling compartment. Referring to fig. 2 and 4, the stirling refrigeration system may also include a heat sink 304. The heat sink 304 is thermally coupled to the hot side of the stirling cooler 300 and may include a hot side adapter 341, a heat conducting heat pipe 342, and fins 343.

Fig. 5 is an exploded schematic view of the double door 400 and the door frame 430 of the refrigerator 100 shown in fig. 1. Fig. 6 is a partially enlarged schematic view of fig. 5. A double door 400 is provided at a front side of the deep cooling compartment of the refrigerator 100 to enhance a heat insulating effect of the refrigerator 100. In some embodiments, the double door 400 includes an outer door body 401 and an inner door body 402; the inner door body 402 is positioned at the inner side of the outer door body 401, is arranged at the front side of the deep cooling chamber and is used for opening and closing the deep cooling chamber; 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 deep cooling compartment is lower, when deep cooling compartment and ordinary compartment share same outer door body 401, set double-deck door 400 to including outer door body 401 and interior door body 402 independent of each other, and the size of outer door body 401 is greater than the size of interior door body 402, ordinary compartment is opened and close by outer door body 401, and like this, when the user got from ordinary compartment and puts article, under the state that outer door body 401 was opened, interior door body 402 can keep the state of closing, and also the deep cooling compartment is still sealed, can effectively reduce to leak cold. 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 deep cooling chamber, a pressure balance hole can be further formed in the door seal of the inner door body 402 to ensure that the inner door body 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 tank 101 of the deep cooling compartment. 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. By providing a separate door frame 430 in the front of the tank 101 of the cryogenic compartment, the inner door 402 can be embedded in the tank 101. 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 sealing strip may be disposed between the upper portion of the inner door body 402 and the general compartment.

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. 5, 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. 6, 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. 6, 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 box body and a deep cooling inner container, wherein a deep cooling chamber is limited in the deep cooling inner container;

a Stirling refrigeration system configured to provide cold to the cryogenic compartment; and

vapor compression refrigerating system, including the evaporimeter, the evaporimeter pastes the outside of cryrogenic inner bag sets up in order to realize vapor compression refrigerating system to cryrogenic compartment provides cold volume.

2. The refrigerator according to claim 1,

the Stirling refrigerating system comprises a Stirling refrigerator and a heat exchanger; wherein

The stirling refrigerator set up in outside the cryrogenic inner bag, heat exchanger set up in the cryrogenic inner bag, heat exchanger with the cold junction thermal connection of stirling refrigerator is in order to realize stirling refrigerating system to the cryrogenic room provides cold volume.

3. The refrigerator according to claim 2,

the heat exchanger is arranged on the inner side of the rear wall of the deep cooling inner container;

the evaporator is arranged by being attached to the outer side of the bottom wall of the deep cooling liner.

4. The refrigerator according to claim 3,

the evaporator is provided with a first heating wire for defrosting;

the outer side of the bottom wall of the deep cooling inner container is provided with a first water receiving disc behind the evaporator and used for receiving defrosting water of the evaporator.

5. The refrigerator according to claim 4,

the bottom wall of the deep cooling inner container is provided with an inclined surface structure which inclines downwards from front to back.

6. The refrigerator according to claim 5,

the included angle between the inclined plane of the bottom wall of the deep cooling inner container and the horizontal plane is 3-10 degrees.

7. The refrigerator according to claim 4,

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

a first drainage port is formed in the first water receiving disc, a first drainage pipe is connected to the first drainage port, and the other end of the first drainage pipe extends to the evaporation pan located in the device chamber.

8. The refrigerator according to claim 7,

the heat exchanger is provided with a second heating wire for defrosting;

the bottom of the inner side of the rear wall of the deep cooling liner is also provided with a second water receiving disc for receiving defrosting water of the heat exchanger;

and a second water outlet is formed in the second water receiving tray, a second water discharge pipe is connected to the second water discharge port, and the other end of the second water discharge pipe extends into the evaporating dish.

9. The refrigerator according to claim 2,

the heat exchanger comprises a cold guide plate and a plurality of cold guide fins arranged at intervals, wherein the plurality of cold guide fins extend forwards from the front surface of the cold guide plate, and an airflow channel is defined between every two adjacent cold guide fins;

the Stirling refrigerating system further comprises a cold guide device, the cold guide device comprises a cold end adapter and a cold guide heat pipe, the cold end adapter is fixed to 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 rear surface of the cold guide plate.

10. The refrigerator according to claim 1,

the evaporator comprises a first heat exchange plate, a second heat exchange plate and a part clamp, wherein the heat exchange tube of a refrigerant flows inside the evaporator between the first heat exchange plate and the second heat exchange plate, and the first heat exchange plate or the second heat exchange plate is attached to the outer side of the deep cooling inner container.

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