CN214276191U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, include: the refrigerator comprises a box body, a door body and a refrigerator, wherein storage compartments are limited in the box body, and at least one storage compartment is a deep cooling compartment; and a stirling refrigeration system configured to provide refrigeration to said cryogenic compartment; the Stirling refrigerating system comprises a Stirling refrigerator and a heat dissipation device, wherein the heat dissipation device is thermally connected with the hot end of the Stirling refrigerator, and at least one part of the heat dissipation device extends into an evaporation dish for receiving defrosting water so as to dissipate heat by using the defrosting water. The utility model discloses a refrigerator can utilize the defrosting water to dispel the heat with higher speed heat abstractor, has promoted the radiating effect of stirling refrigerator, has reduced the fault rate of stirling refrigerator, can prolong the life of stirling refrigerator.

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 existing household refrigerator adopting Stirling refrigeration has the defects that the Stirling refrigerator has poor heat dissipation, so that the Stirling refrigerator has high failure rate and the service life is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a refrigerator that stirling refrigerator's radiating effect is good.

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 box body, a door body and a refrigerator body, wherein storage compartments are limited in the box body, and at least one storage compartment is a deep cooling compartment; and

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

The Stirling refrigerating system comprises a Stirling refrigerator and a heat dissipation device, wherein the heat dissipation device is thermally connected with the hot end of the Stirling refrigerator, and at least one part of the heat dissipation device extends into an evaporation pan for receiving defrosting water so as to dissipate heat by using the defrosting water.

Optionally, the heat sink comprises a hot end adapter, a heat conducting heat pipe and a heat sink; wherein the hot end adapter is fixedly and thermally connected with the hot end of the Stirling refrigerator; the first end of the heat conduction heat pipe is fixedly and thermally connected with the hot end adapter, and the second end of the heat conduction heat pipe is fixedly and thermally connected with the heat dissipation piece; at least a portion of the heat sink is within the evaporation pan.

Optionally, the heat sink includes a heat dissipating fin and/or a heat conducting block, and the second end of the heat conducting heat pipe is inserted through the heat dissipating fin and/or fixed to the heat conducting block; wherein

At least one radiating fin is at least partially positioned in the evaporating dish; and/or

The heat conduction block is at least partially arranged in the evaporating dish.

Optionally, the stirling refrigerating system further comprises a heat exchanger, the heat exchanger is arranged in the deep cooling compartment and is in thermal connection with the cold end of the stirling refrigerating machine, and a first heating wire for defrosting is arranged on the heat exchanger;

the refrigerator further includes: the vapor compression refrigeration system is used for providing cold energy for at least one storage room, an evaporator of the vapor compression refrigeration system is arranged in the storage room, and a second heating wire for defrosting is arranged on the evaporator;

the evaporating dish is configured to receive defrosting water generated by defrosting of the heat exchanger and/or the evaporator.

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

the Stirling refrigerator, the compressor of the vapor compression refrigeration system and the condenser are transversely arranged in the device chamber at intervals, and the Stirling refrigerator is positioned behind the deep cooling chamber and the cold end of the Stirling refrigerator is arranged upwards.

Optionally, the evaporating dish is arranged on one side of the Stirling refrigerator far away from the compressor and is used for receiving defrosting water generated by defrosting of the heat exchanger.

Optionally, the heat-conducting heat pipe includes a set of first heat-conducting heat pipes bent and extended upwards from the hot end adapter and two sets of second heat-conducting heat pipes bent and extended downwards from the hot end adapter, and the second ends of the second heat-conducting heat pipes reach the evaporating dish; the second ends of the two groups of second heat conduction heat pipes respectively penetrate through the group of radiating fins, and the two groups of radiating fins are arranged at intervals in the front and back.

Optionally, the evaporating dish is arranged on one side of the compressor far away from the Stirling refrigerator and is used for receiving defrosting water generated by defrosting of the evaporator or the evaporator and the heat exchanger.

Optionally, the evaporation pan comprises a first evaporation pan and a second evaporation pan; wherein

The first evaporating dish is arranged on one side of the Stirling refrigerator, which is far away from the compressor, and is used for receiving defrosting water generated by defrosting of the heat exchanger; at least a portion of the heat sink is within the first evaporation pan;

the second evaporating dish is arranged on one side of the compressor, which is far away from the Stirling refrigerator, and is used for receiving defrosting water generated by defrosting of the evaporator.

Optionally, the upper part of the first evaporating dish is provided with an overflow hole;

the refrigerator also comprises an overflow pipe, one end of the overflow pipe is connected with the overflow hole, and the other end of the overflow pipe extends into the second evaporation dish.

The refrigerator of the utility model comprises a Stirling refrigerator and a heat dissipation device, wherein the heat dissipation device is thermally connected with the hot end of the Stirling refrigerator, at least one part of the heat dissipation device extends into an evaporation vessel for receiving defrosting water, and the defrosting water can be utilized to carry out accelerated heat dissipation on the heat dissipation device, so that the heat dissipation effect of the Stirling refrigerator is improved, the failure rate of the Stirling refrigerator is reduced, and the service life of the Stirling refrigerator can be prolonged; meanwhile, the defrosting water can be reused to accelerate the evaporation of the defrosting water, and excessive defrosting water is prevented from being left in the evaporating dish.

Further, the utility model discloses a heat abstractor of refrigerator includes hot junction adapter, heat conduction heat pipe and radiating piece, through the hot junction fixed thermal connection with hot junction adapter and stirling refrigerator, with heat conduction heat pipe's first end and hot junction adapter fixed thermal connection, the second end is connected with radiating piece fixed thermal connection, with at least partly in the evaporating dish of radiating piece, can make stirling refrigerator's heat transmit to radiating piece department effectively, heat abstractor's structure is assembled easily simultaneously, and the structure is firm.

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 front view schematically illustrating parts of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a perspective view of a part of components of the refrigerator shown in fig. 1.

Fig. 3 is another perspective view of a part of components of the refrigerator shown in fig. 1.

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

Fig. 5 is a rear view schematically illustrating parts of a refrigerator according to another embodiment of the present invention.

Fig. 6 is a rear view schematically showing parts of a refrigerator according to still 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 orientations or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", and the like are orientations based on the refrigerator 100 itself as a reference.

Fig. 1 is a schematic front view of parts of a refrigerator 100 according to an embodiment of the present invention. Fig. 2 is a schematic perspective view of a part of the components of the refrigerator 100 shown in fig. 1. Fig. 3 is another perspective view of a part of the components of the refrigerator 100 shown in fig. 1. Fig. 4 is a perspective view of the stirling refrigeration system of the refrigerator 100 shown in fig. 1. Fig. 5 is a rear view schematically illustrating parts of a refrigerator 100 according to another embodiment of the present invention. Fig. 6 is a rear view schematically illustrating parts of a refrigerator 100 according to still another embodiment of the present invention.

The refrigerator 100 of the embodiment of the present invention may generally include: a cabinet 101 and a stirling refrigeration system. The box body 101 is internally provided with storage chambers, and at least one storage chamber is a deep cooling chamber 112. The stirling refrigeration system is configured to provide refrigeration to cryogenic compartment 112. The stirling refrigeration system includes a stirling cooler 300 and a heat sink 304, the heat sink 304 is thermally coupled to the hot end of the stirling cooler 300, and at least a portion of the heat sink 304 extends into the evaporation pan 103 that receives the defrost water to dissipate heat using the defrost water. The utility model discloses refrigerator 100 is through setting stirling refrigerating system to including stirling refrigerator 300 and heat abstractor 304, heat abstractor 304 and stirling refrigerator 300's hot junction thermal connection, and at least some of heat abstractor 304 extends to the evaporating dish 103 of accepting the defrosting water, can utilize the defrosting water to carry out the heat dissipation with higher speed to heat abstractor 304, has promoted stirling refrigerator 300's radiating effect, has reduced stirling refrigerator 300's fault rate, can prolong stirling refrigerator 300's life; meanwhile, the recycling of the defrosting water can also accelerate the evaporation of the defrosting water, and excessive defrosting water is prevented from being left in the evaporation dish 103.

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 defining a common compartment 111 and at least one cryogenic inner container defining a cryogenic compartment 112. Herein, the "normal liner" refers to other liners except for the cryogenic liner, such as a refrigerating liner, a freezing liner, and a temperature-changing liner. Correspondingly, the "ordinary compartment" refers to other non-ultralow temperature compartments, such as a refrigerating compartment, a freezing compartment and a temperature-changing compartment, which are not cooled by the stirling refrigerating system and cannot realize ultralow temperature, except the cryogenic compartment 112, 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. Cryogenic compartment 112 refers to a compartment that is cooled using at least a stirling refrigeration system. In the embodiment shown in fig. 1, 5 and 6, the refrigerator 100 is a cross-door refrigerator, and the storage compartments include a refrigerating compartment (not shown) located at the upper portion, a freezing compartment located at the right side of the lower portion, a temperature-changing compartment located above the left side of the lower portion, and a deep-cooling compartment 112 located below the left side of the lower portion.

Referring to fig. 2 to 4, the stirling cooler 300 may include a casing, a cylinder, a piston, and a driving mechanism 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 the end of the cylindrical portion 302 and a hot end of the stirling cooler 300 at the junction of the cylindrical portion 302 and the body portion 301.

In some embodiments, the heat sink 304 of the refrigerator 100 of the present invention includes a hot end adapter 341, a heat conducting heat pipe 342, and a heat sink 343. The hot end adapter 341 is fixedly thermally connected to the hot end of the stirling cooler 300. A first end of the heat-conducting heat pipe 342 is fixedly and thermally connected to the hot-end adapter 341, and a second end is fixedly and thermally connected to the heat-dissipating member 343. At least a portion of the heat sink 343 is within the evaporation pan 103. The utility model discloses refrigerator 100's heat abstractor 304 includes hot end adapter 341, heat conduction heat pipe 342 and heat sink 343, fixed hot connection of hot end through with hot end adapter 341 and stirling refrigerator 300, the first end and the hot end adapter 341 fixed hot connection with heat conduction heat pipe 342, the second end is connected with the fixed hot connection of heat sink 343, at least partly be in evaporating dish 103 with heat sink 343, can make stirling refrigerator 300's heat transmit to heat sink 343 department effectively, heat abstractor 304's structure is assembled easily simultaneously, and the structure is firm.

In some embodiments, the heat dissipating member 343 includes heat dissipating fins 3431 and/or a heat conducting block 3432, and the second end of the heat conducting heat pipe 342 passes through the heat dissipating fins 3431 and/or is fixed to the heat conducting block 3432; wherein at least one heat dissipation fin 3431 is at least partially disposed in the evaporation pan 103; and/or the thermally conductive block 3432 is at least partially within the boat 103. In the embodiment shown in fig. 2 to 4, the heat dissipation member 343 includes a plurality of heat dissipation fins 3431. In the embodiment shown in fig. 5 and 6, the heat dissipation member 343 includes a plurality of heat dissipation fins 3431 and a heat conduction block 3432. It is to be understood that the heat radiating member 343 may also include only the heat conductive block 3432, but it is preferable to employ the heat radiating fins 3431 in view of the heat radiating efficiency of the heat radiating fins 3431 better than that of the heat conductive block 3432. The thermal block 3432 may be, for example, an aluminum block. The heat dissipation fins 3431 may also be made of aluminum.

The defrosting water used by the heat dissipation device 304 of the embodiment of the present invention may be defrosting water generated by defrosting the heat exchanger of any refrigeration system of the refrigerator 100. In some embodiments, the stirling refrigeration system further comprises a heat exchanger 305, the heat exchanger 305 is disposed in the cryogenic compartment 112 and is thermally connected to the cold end of the stirling cooler 300, and the heat exchanger 305 is provided with a first heating wire 353 for defrosting. The embodiment of the utility model provides a refrigerator 100 still includes: the vapor compression refrigeration system is used for providing cold energy for at least one storage compartment, an evaporator 203 of the vapor compression refrigeration system is arranged in the storage compartment, and a second heating wire (not shown in the figure) for defrosting is arranged on the evaporator 203. The evaporation pan 103 is configured to receive defrosting water generated by defrosting of the heat exchanger 305 and/or the evaporator 203. As shown in fig. 3, the heat exchanger 305 is disposed at the inner rear wall of the deep cooling chamber 112, a water receiving tray (not shown) is further formed at the bottom of the inner rear wall of the deep cooling chamber 112, a water outlet is formed in the water receiving tray, the water outlet is connected to a water discharge pipe 354, and the end of the water discharge pipe 354 extends into the evaporation pan 103. The vapor compression refrigeration system may supply cooling only to the normal compartment 111, or may supply cooling to the normal compartment 111 and the cryogenic compartment 112. In an embodiment of the present invention, the vapor compression refrigeration system supplies only the common compartment 111 with cooling. The vapor compression refrigeration system is implemented to supply cold to the common compartment 111 by providing the evaporator 203 inside the inner container or containers of the common compartment 111. As shown in fig. 5, the evaporator 203 is disposed inside the inner container of the freezing compartment located at the right side of the lower portion, and the variable temperature compartment and the refrigerating compartment can supply cold by providing an air duct communicating with the freezing compartment.

Referring to fig. 4, the heat exchanger 305 may include 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. A heat insulating member 306 may be provided outside the cooling guide 303. 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 first 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 disposed inside the rear wall of the deep cooling compartment 112, an air supply opening is disposed at the upper portion of the air duct cover, an air return opening is disposed at the lower portion of the air duct cover, an accommodating space is defined between the air duct cover and the inner container of the deep cooling compartment 112, the heat exchanger 305 is disposed in the accommodating space, and the air flow channel extends substantially in the vertical direction, and the air flow flowing into the accommodating space from the air return opening passes through the heat exchanger 305 from bottom to top, so that a structure of air return from bottom to top is formed in the deep cooling compartment 112.

As shown in fig. 2 and 3, a device chamber 102 is formed in the rear bottom of the case 101. The Stirling refrigerator 300, the compressor 201 of the vapor compression refrigeration system and the condenser 202 are transversely arranged in the device chamber 102 at intervals, the Stirling refrigerator 300 is positioned behind the deep cooling chamber 112, and the cold end of the Stirling refrigerator is arranged upwards. By arranging the stirling cooler 300, the compressor 201, and the condenser 202 in the device chamber 102, the refrigerator 100 can be made reasonable and compact in component layout, and convenient to install and maintain. First ventilation openings 121 are respectively formed at lower portions of two side walls of the device chamber 102 to facilitate airflow circulation. A heat radiation fan 204 may be further provided between the compressor 201 and the condenser 202 to further enhance heat radiation. The stirling cooler 300 may be secured within the device chamber 102 by springs, shock mounts, or the like.

In some embodiments, the evaporating dish 103 is disposed on a side of the stirling cooler 300 away from the compressor 201 for receiving defrosting water generated by defrosting of the heat exchanger 305. By disposing the evaporating dish 103 on the side of the stirling cooler 300 away from the compressor 201, the gap between the stirling cooler 300 and the adjacent side wall of the device chamber 102 can be fully utilized, so that the layout of the device chamber 102 of the refrigerator 100 is more compact, and the length of the heat conducting heat pipe 342 can be shortened, thereby further improving the heat dissipation efficiency. As shown in fig. 2 to 4, the heat-conducting heat pipes 342 include a set of first heat-conducting heat pipes 3421 bent and extended upward from the hot-end adapter 341 and two sets of second heat-conducting heat pipes 3422 bent and extended downward from the hot-end adapter 341 and having second ends reaching the evaporation pan 103; the second ends of the two sets of second heat conduction heat pipes 3422 respectively penetrate through the set of heat dissipation fins 3431, and the two sets of heat dissipation fins 3431 are arranged at intervals in front of and behind. By arranging two groups of radiating fins 3431 in the evaporating dish 103 and arranging the two groups of radiating fins 3431 at intervals, the utilization of the defrosting water by the radiating fins 3431 can be improved, and the radiating efficiency of the stirling refrigerator 300 is further improved; by bending and extending the first heat-conducting heat pipe 3421 upwards, on one hand, part of the heat dissipation device 304 of the stirling refrigerator 300 can be far away from the compressor 201, so that the mutual influence of the heat of the stirling refrigeration system and the heat of the vapor compression refrigeration system can be reduced as much as possible, and on the other hand, a second vent (not shown in the figure) can be arranged at the corresponding position of the device chamber 102, so that the heat dissipation effect of the stirling refrigerator 300 can be further enhanced.

In some embodiments, the evaporation pan 103 is disposed on a side of the compressor 201 away from the stirling cooler 300, and is configured to receive defrosting water generated by defrosting the evaporator 203 or the evaporator 203 and the heat exchanger 305. Since the conventional refrigerator 100 is generally provided with a vapor compression refrigeration system and generally has the evaporation pan 103 for receiving the defrost water of the evaporator 203, a part of the heat sink 304 is introduced into the conventional evaporation pan of the refrigerator 100, and the additional addition of the evaporation pan 103 can be omitted, thereby reducing the number of components. As shown in fig. 5, a portion of the heat conducting heat pipe 342 extends upward to the left, another portion extends downward to the right, and the second end reaches the evaporation pan 103 located at the right side of the compressor 201, wherein the second end of the heat conducting heat pipe 342 extending upward to the left is disposed through the plurality of heat dissipating fins 3431, and a heat conducting block 3432 is fixed to the second end of the heat conducting heat pipe 342 extending downward to the right.

In some embodiments, the evaporation pan 103 includes a first evaporation pan 131 and a second evaporation pan 132; the first evaporating dish 131 is arranged on one side of the Stirling refrigerator 300 far away from the compressor 201 and is used for receiving defrosting water generated by defrosting of the heat exchanger 305; at least a portion of the heat sink 343 is within the first evaporation pan 131; the second evaporation pan 132 is disposed on a side of the compressor 201 away from the stirling cooler 300, and is configured to receive defrosting water generated by defrosting of the evaporator 203. That is, two evaporation pans are simultaneously provided in the device chamber 102, a first evaporation pan 131 is provided near the stirling refrigerator 300 to receive the defrost water generated by the defrosting of the heat exchanger 305 and a portion of the heat dissipation member 343 is located in the first evaporation pan 131, and a second evaporation pan 132 is provided near the compressor 201 to receive the defrost water generated by the defrosting of the evaporator 203. Although the number of the evaporation pans 103 is increased, the length of the heat-conducting heat pipe 342 can be shortened, and the problem that the compressor 201 needs to be bypassed when the heat-conducting heat pipe 342 is disposed across the compressor 201 and the like so that the heat-conducting heat pipe 342 does not affect the replacement of the compressor 201 is avoided.

In some preferred embodiments, the first evaporation pan 131 is provided with an overflow hole at the upper part. The utility model discloses refrigerator 100 still includes overflow pipe 133, and the overflow hole is connected to overflow pipe 133's one end, and the other end extends to in the second evaporating dish 132. By providing the overflow hole and the overflow pipe 133, when the amount of defrosting water in the first evaporation pan 131 is excessive, a part of defrosting water can be introduced into the second evaporation pan 132, and the defrosting water can be prevented from overflowing. As shown in fig. 6, a first evaporation pan 131, a stirling cooler 300, a compressor 201, and a second evaporation pan 132 are sequentially disposed in the device chamber 102 from left to right at intervals, a first portion of the heat-conducting heat pipe 342 extends upward to the left, a second portion extends downward to the left into the first evaporation pan 131, and a third portion extends downward to the right to reach the second evaporation pan 132, wherein second ends of the heat-conducting heat pipe 342 of the first portion and the second portion penetrate through a plurality of heat dissipation fins 3431, a heat conduction block 3432 is fixed to a second end of the heat-conducting heat pipe 342 of the third portion, and an overflow hole is formed in an upper portion of a right sidewall of the first evaporation pan 131.

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 deep cooling compartment 112 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 on the inner side of the outer door body 401, is arranged on the front side of the deep cooling chamber 112 and is used for opening and closing the deep cooling chamber 112; 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 cryogenic compartment 112 is relatively low, when the cryogenic compartment 112 and the common compartment 111 share the same outer door body 401, the double-layer door 400 is arranged 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 common compartment 111 is opened and closed by the outer door body 401, so that when a user takes and places articles from and in the common compartment 111, the inner door body 402 can be kept in a closed state under the condition that the outer door body 401 is opened, namely, the cryogenic compartment 112 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 deep cooling compartment 112, a pressure balance hole may be further formed on 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. Door frame 430 is disposed at the front of tank 101 of deep cooling compartment 112. 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 front of the tank 101 of the cryogenic compartment 112, the inner door 402 can be embedded within 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 seal may be provided between the upper portion of the inner door 402 and the general compartment 111.

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 box body, a door body and a refrigerator, wherein storage compartments are limited in the box body, and at least one storage compartment is a deep cooling compartment; and

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

The Stirling refrigerating system comprises a Stirling refrigerator and a heat dissipation device, wherein the heat dissipation device is thermally connected with the hot end of the Stirling refrigerator, and at least one part of the heat dissipation device extends into an evaporation pan for receiving defrosting water so as to dissipate heat by using the defrosting water.

2. The refrigerator according to claim 1,

the heat dissipation device comprises a hot end adapter, a heat conduction heat pipe and a heat dissipation piece; the hot end adapter is fixedly and thermally connected with the hot end of the Stirling refrigerator; the first end of the heat conduction heat pipe is fixedly and thermally connected with the hot end adapter, and the second end of the heat conduction heat pipe is fixedly and thermally connected with the heat radiating piece; at least a portion of the heat sink is within the evaporation pan.

3. The refrigerator according to claim 2,

the heat dissipation piece comprises a heat dissipation fin and/or a heat conduction block, and the second end of the heat conduction heat pipe penetrates through the heat dissipation fin and/or is fixed on the heat conduction block; wherein

At least one of the heat dissipation fins is at least partially arranged in the evaporation dish; and/or

The heat conduction block is at least partially arranged in the evaporation dish.

4. The refrigerator according to claim 3,

the Stirling refrigerating system further comprises a heat exchanger, the heat exchanger is arranged in the deep cooling chamber and is in thermal connection with the cold end of the Stirling refrigerating machine, and a first heating wire for defrosting is arranged on the heat exchanger;

the refrigerator further includes: the vapor compression refrigeration system is used for providing cold energy for at least one storage room, an evaporator of the vapor compression refrigeration system is arranged in the storage room, and a second heating wire for defrosting is arranged on the evaporator;

the evaporation pan is configured to receive defrosting water generated by defrosting of the heat exchanger and/or the evaporator.

5. The refrigerator according to claim 4,

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

the Stirling refrigerator the vapor compression refrigerating system's compressor, condenser horizontal interval set up in the device is indoor, the Stirling refrigerator is located the back and the cold junction of cryrogenic room upwards set up.

6. The refrigerator according to claim 5,

the evaporating dish is arranged on one side of the Stirling refrigerator, which is far away from the compressor, and is used for receiving defrosting water generated by defrosting of the heat exchanger.

7. The refrigerator according to claim 6,

the heat-conducting heat pipes comprise a group of first heat-conducting heat pipes bent and extended upwards from the hot end adapter and two groups of second heat-conducting heat pipes bent and extended downwards from the hot end adapter, and second ends of the second heat-conducting heat pipes reach the evaporating dish; the second ends of the two groups of second heat conduction heat pipes respectively penetrate through the two groups of radiating fins, and the two groups of radiating fins are arranged at intervals in the front and back.

8. The refrigerator according to claim 5,

the evaporator is arranged on one side of the compressor, which is far away from the Stirling refrigerator, and is used for receiving defrosting water generated by defrosting of the evaporator or the evaporator and the heat exchanger.

9. The refrigerator according to claim 5,

the evaporation pan comprises a first evaporation pan and a second evaporation pan; wherein

The first evaporating dish is arranged on one side of the Stirling refrigerator, which is far away from the compressor, and is used for receiving defrosting water generated by defrosting of the heat exchanger; at least a portion of the heat sink is within the first evaporation pan;

the second evaporating dish is arranged on one side of the compressor, which is far away from the Stirling refrigerator, and is used for receiving defrosting water generated by defrosting of the evaporator.

10. The refrigerator according to claim 9,

the upper part of the first evaporating dish is provided with an overflow hole;

the refrigerator also comprises an overflow pipe, one end of the overflow pipe is connected with the overflow hole, and the other end of the overflow pipe extends into the second evaporation dish.

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