CN211876488U

CN211876488U - Refrigerating and freezing device

Info

Publication number: CN211876488U
Application number: CN201922403951.4U
Authority: CN
Inventors: 李靖; 房雯雯; 野田俊典; 万新明; 刘会; 杨利生; 陶瑞涛; 孙永升
Original assignee: Qingdao Haier Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-06
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a cold-stored refrigeration device. The refrigerating and freezing device comprises a box body, a vapor compression refrigerating system and a Stirling refrigerating system. The case defines at least one storage compartment and a device compartment. At least one part of the vapor compression refrigeration system is arranged in a storage chamber or is communicated with the storage chamber so as to provide cold energy for the storage chamber, and the vapor compression refrigeration system comprises a compressor. At least one part of the Stirling refrigerating system is arranged in a storage chamber or reaches the storage chamber to provide cold for the storage chamber, and the Stirling refrigerating system comprises a Stirling refrigerator. The compressor and the Stirling refrigerator are both arranged in the device chamber, the structure is compact, the box body has a large storage space, the installation and maintenance and the circuit layout of the compressor and the Stirling refrigerator are facilitated, and the production cost is reduced.

Description

Refrigerating and freezing device

Technical Field

The utility model relates to a refrigeration field especially relates to an adopt cryogenic cold-stored refrigerating plant of stirling refrigerating system.

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 adopts a vapor compression method for refrigeration, and in recent years, refrigerators adopting semiconductor, magnetic refrigeration and other methods are developed, but the temperature in the refrigerator is difficult to reach below minus 30 ℃ due to the limitation of refrigeration efficiency. The Stirling refrigerating system is adopted for refrigeration in the fields of spaceflight, medical treatment and the like, and the refrigerating temperature of the system can be below 200 ℃ below zero. But the cold end and the hot end of the Stirling refrigerator are close to each other, so that heat dissipation is difficult.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome at least one defect of prior art, provide an adopt cryogenic cold-stored refrigerating plant of stirling refrigerating system.

The utility model discloses a further purpose avoids the heat that stirling refrigerating system and vapor compression refrigerating system produced to interfere with each other.

The utility model discloses another further purpose improves stirling refrigerating system and vapor compression refrigerating system's radiating efficiency.

Particularly, the utility model provides a cold-stored refrigeration device, its characterized in that includes:

a case defining at least one storage compartment and a device compartment;

the vapor compression refrigeration system is at least partially arranged in the storage room or communicated into the storage room so as to provide cold energy for the storage room, and comprises a compressor; and

the Stirling refrigerating system is at least partially arranged in the storage room or communicated into the storage room so as to provide cold for the storage room, and comprises a Stirling refrigerating machine; wherein

The compressor and the Stirling refrigerator are both disposed in the device chamber.

Optionally, the refrigeration and freezing apparatus further comprises:

the partition plate is arranged in the device chamber and divides the device chamber into a compressor heat dissipation area and a Stirling heat dissipation area; wherein

The compressor is arranged in the compressor heat dissipation area, and the hot end of the Stirling refrigerator is arranged in the Stirling heat dissipation area.

Optionally, the compressor and the stirling cooler are juxtaposed in a transverse direction; and is

The body of the Stirling cooler is at least partially located in the compressor heat sink region.

Optionally, the compressor heat dissipation area and the stirling heat dissipation area are respectively provided with at least one compressor vent and at least one stirling vent which are communicated with the external environment.

Optionally, the stirling refrigeration system further comprises a heat sink disposed in the stirling heat sink region and comprising:

the hot end adapter is arranged to be in thermal connection with the hot end of the Stirling refrigerator and is provided with at least one pipe hole;

and the at least one heat conduction heat pipe is respectively arranged in the at least one pipe hole and is in thermal connection with the hot end adapter.

Optionally, the number of the heat conducting heat pipes is multiple, and the heat conducting heat pipes extend from the hot end adapter to two transverse sides of the hot end respectively; and is

The number of the Stirling vents is two, one Stirling vent is arranged on the transverse side wall of the Stirling heat dissipation area, and the other Stirling vent is arranged on the rear side wall of the Stirling heat dissipation area, which is located far away from the rear side of the heat conduction heat pipe of the transverse side wall.

Optionally, the at least one heat-conducting heat pipe is arranged to extend from the hot end adapter to a lateral side of the cold end of the stirling cooler; and is

The number of the Stirling vents is two, one of the Stirling vents is arranged on the transverse side wall, located on one side, close to the at least one heat conduction heat pipe, of the cold end of the Stirling heat dissipation area, and the other Stirling vent is arranged on the portion, located on the rear side of the at least one heat conduction heat pipe, of the backward side wall of the Stirling heat dissipation area.

Optionally, the heat dissipation device further includes:

and the Stirling heat dissipation fan is arranged at the Stirling vent positioned on the transverse side wall of the Stirling heat dissipation area.

Optionally, the at least one compressor vent comprises two compressor vents disposed upstream and downstream of the stirling cooler and the compressor, respectively; and the refrigerating and freezing device further comprises:

a compressor heat rejection blower disposed within the compressor heat rejection region and configured to urge airflow from the compressor to the body of the Stirling cooler.

Optionally, the vapor compression refrigeration system further comprises:

and the condenser is arranged in the heat dissipation area of the compressor and is positioned at the upstream of the compressor.

The utility model discloses a cold-stored refrigerating plant all sets up at the device indoor with vapor compression refrigerating system's compressor and stirling refrigerating system's stirling refrigerator for compact structure not only for the box has great storing space, is favorable to the installation maintenance and the circuit layout of compressor and stirling refrigerator moreover, has reduced manufacturing cost.

Further, the utility model discloses a set up the baffle in the device is indoor to come the device room to separate for compressor radiating area and stirling radiating area to make at least partial main part of compressor and stirling refrigerator set up in the compressor radiating area, the hot junction of stirling refrigerator sets up in the stirling radiating area, has avoided the heat that compressor and stirling refrigerator produced to interfere with each other, and then has reduced the energy consumption, has improved vapor compression refrigerating system and stirling refrigerating efficiency of stirling refrigerating system.

Further, the utility model discloses a heat pipe heat abstractor who sets up and stirling refrigerator hot junction in the stirling radiating area, and make the outer air flow through the condenser in compressor radiating area in proper order, the main part of compressor and stirling refrigerator flows again, need not to increase new fan in the compressor radiating area, when making stirling refrigerating system and vapor compression refrigerating system compact structure, the radiating efficiency of stirling refrigerating system and vapor compression refrigerating system has been improved on the whole, the energy consumption has further been reduced, and the refrigerating efficiency is improved, and the problem of overheated production potential safety hazard is avoided.

Further, the utility model discloses a plurality of spring hanging device that distribute on the circumferential direction of stirling refrigerator suspend the stirling refrigerator in the housing in midair to set up a plurality of elastic pad feet between the bottom stabilizer blade of housing and mounting surface, not only avoided the vibration transmission that the stirling refrigerator produced to housing and housing, the box takes place to resonate, still when the installation that makes the stirling refrigerator is reliable and stable, reduce the vibration of eliminating the stirling refrigerator even in all directions, user experience has further been improved.

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 rear view of a refrigeration and freezing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic rear view of the refrigeration freezer of fig. 1 with the cover plate of the appliance compartment removed;

FIG. 3 is a schematic rear view of the refrigeration freezer of FIG. 2 with one of the half shells, one of the resilient feet, and the heat retention cover removed;

FIG. 4 is a schematic partial enlarged view of region A in FIG. 3;

FIG. 5 is a schematic exploded view of the heat sink of FIG. 4;

FIG. 6 is a schematic cross-sectional view of the resilient footpad of FIG. 4;

figure 7 is a schematic rear view of a refrigeration freezer apparatus according to another embodiment of the present invention;

fig. 8 is a schematic partial view of the equipment compartment of the refrigeration freezer shown in fig. 7.

Detailed Description

Fig. 1 is a schematic rear view of a refrigeration and freezing apparatus 100 according to an embodiment of the present invention. Referring to fig. 1, the refrigerating and freezing apparatus 100 may include a cabinet defining at least one storage compartment, at least one door for opening and closing the at least one storage compartment, respectively, a stirling refrigerating system for refrigerating the at least one storage compartment, a vapor compression refrigerating system for refrigerating the at least one storage compartment, and a controller for controlling operations of the vapor compression refrigerating system and the stirling refrigerating system.

In the present invention, at least one of the plurality of the first and second electrodes is one, two, or more than two. The refrigerating and freezing apparatus 100 may be a refrigerator, freezer, ice chest, or the like.

The box body may include an outer box 111, at least one inner container disposed in the outer box 111, and a heat insulation layer disposed between the outer box 111 and the at least one inner container. Wherein, at least one storage compartment is limited by at least one inner container respectively.

The vapor compression refrigeration system and the Stirling refrigeration system can be at least partially arranged in a storage room or communicated into the storage room so as to provide cold for the storage room.

In the illustrated embodiment, the vapor compression refrigeration system may be configured to provide refrigeration to the storage compartment defined by the liner 112 and the liner 113. The stirling refrigeration system may be configured to provide cooling only to the storage compartment defined by the inner bladder 112.

Specifically, the vapor compression refrigeration system may include a compressor 131, a condenser 132, at least one throttling element, and at least one evaporator. Wherein, at least one evaporimeter can set up respectively in at least one storing indoor.

The stirling refrigeration system may include at least one stirling cooler 120, at least one cold conduction device 150 thermally coupled to the cold end of the at least one stirling cooler 120, respectively, and at least one heat sink 160 thermally coupled to the hot end of the at least one stirling cooler 120, respectively. Wherein, the cold conducting device 150 can be partially disposed in the inner container 112. In the illustrated embodiment, the number of stirling coolers 120 is one.

Specifically, each Stirling cooler 120 may include a housing, a cylinder, a piston, and a drive mechanism that drives the piston in motion. The housing may be composed of a main body 121 and a cylindrical portion 122. The driving mechanism may be disposed within the body 121. The piston may be arranged to reciprocate within the cylinder portion 122 to form a cold end and a hot end.

Fig. 2 is a schematic rear view of the refrigeration freezer 100 shown in fig. 1 with the cover 115 of the appliance compartment 114 removed. Referring to fig. 2, the outer case 111 may further define a device chamber 114. The compressor 131 and the stirling cooler 120 may be disposed in the device chamber 114, so that the structure is compact, the box body has a large storage space, the installation and maintenance and the circuit layout of the compressor 131 and the stirling cooler 120 are facilitated, and the production cost is reduced.

The device chamber 114 may also be provided with a partition 140 for dividing the device chamber 114 into a compressor heat rejection region 114a and a Stirling heat rejection region 114 b. The compressor 131 may be disposed in the compressor heat dissipation region 114a, and the hot end of the stirling cooler 120 may be disposed in the stirling heat dissipation region 114b, so as to avoid mutual interference between heat generated by the compressor 131 and the hot end of the stirling cooler 120, thereby reducing energy consumption and improving the cooling efficiency of the vapor compression cooling system and the stirling cooling system.

The compressor heat sink region 114a and the Stirling heat sink region 114b may be vented with at least one compressor vent 117 and at least one Stirling vent 116, respectively, in communication with the off-board environment to vent heat to the off-board environment. In the present invention, the external environment refers to the environment around the refrigerating and freezing apparatus 100.

The compressor 131 and the stirling cooler 120 may be juxtaposed in the lateral direction. The body 121 of the stirling cooler 120 may be at least partially disposed in the compressor heat dissipation region 114a to improve the compactness of the vapor compression refrigeration system and the stirling refrigeration system and reduce the space occupied by the device chamber 114 while maintaining heat dissipation efficiency.

In some embodiments, the device chamber 114 may be located at the bottom of the back side of the case. The stirling cooler 120 may be disposed vertically within the device chamber 114 with its cold end up. That is, the Stirling heat sink region 114b may be located above the compressor heat sink region 114 a.

In other embodiments, the device chamber 114 may be located at the top of the tank. In some further embodiments, the Stirling cooler 120 may be disposed vertically within the device chamber 114 with its cold end down. That is, the Stirling heat sink region 114b may be located below the compressor heat sink region 114 a. In still further embodiments, the Stirling cooler 120 may be disposed horizontally within the device chamber 114 with its cold end forward. That is, the Stirling heat sink region 114b may be located forward of the compressor heat sink region 114 a.

In some embodiments, the refrigerated freezer 100 can also include a heat retaining cover 170. The heat-retaining cover 170 may be configured to separate the cold end and the hot end of the stirling cooler 120 between the inner side and the outer side thereof, so as to avoid thermal interference of the heated end of the cold end, and to transmit most or even all of the cold energy generated by the cold end to the cryogenic compartment, thereby improving the cooling efficiency of the stirling cooler 120.

In some embodiments, the refrigerating and freezing device 100 may further include a cover case 180 covering the outside of the body 121 of the stirling cooler 120, so as to prevent heat generated by the compressor 131 from affecting the operating efficiency of the stirling cooler 120, and to shield vibration noise generated by the stirling cooler 120, thereby reducing noise transmitted to the surrounding environment and improving user experience.

Fig. 3 is a schematic rear view of the refrigerating and freezing apparatus 100 shown in fig. 2, in which one half shell 181, one elastic stand 190, and the heat-retaining cover 170 are removed. Referring to fig. 2 and 3, the enclosure 180 may be comprised of two half-shells 181 that are mirror symmetric about a longitudinal central symmetry plane of the stirling cooler 120. That is, the two half-shells 181 of the housing 180 may be mirror symmetric about a plane coplanar with the direction of piston movement of the stirling cooler 120 to facilitate assembly of the stirling cooler 120 with the housing 180 and extraction of the cold and hot ends of the stirling cooler 120.

The compressor heat rejection area 114a may also be provided with a compressor heat rejection fan 133. The at least one compressor vent 117 may include two compressor vents disposed upstream and downstream of the stirling cooler 120 and the compressor 131, respectively. The compressor heat sink fan 133 may be configured to urge airflow from the compressor 131 to the body 121 of the stirling cooler 120 to increase the heat dissipation efficiency of the stirling cooling system and the vapor compression cooling system as a whole, further reducing energy consumption, increasing cooling efficiency, and avoiding overheating creating a potential safety hazard.

The condenser 132 may also be disposed in the compressor heat dissipation area 114a and located upstream of the compressor 131 to further improve the compactness of the refrigeration and freezing apparatus 100 and further improve the heat dissipation efficiency.

The compressor heat dissipation fan 133 may be disposed between the condenser 132 and the compressor 131 to reduce wind resistance, increase air volume, and further increase heat dissipation efficiency.

The controller may be disposed within the compressor heat sink region 114a and downstream of the Stirling cooler 120 to facilitate electrical connection of the controller to the Stirling cooler 120 and the compressor 131.

The at least one compressor vent 117 may further include another two compressor vents respectively provided to portions of the cover plate 115 corresponding to the condenser 132 and the body 121 of the stirling cooler 120 to further improve heat dissipation efficiency.

FIG. 4 is a schematic partial enlarged view of region A in FIG. 3; fig. 5 is a schematic exploded view of the heat sink 160 of fig. 4. Referring to fig. 4 and 5, the heat sink 160 may be disposed in the stirling heat sink region 114 b. And heat sink 160 may include a hot side adapter, at least one thermally conductive heat pipe 162, and a set of fins 163.

Specifically, the hot end adapter may be configured to be thermally connected to the hot end of the stirling cooler 120, and it may be configured with at least one tube aperture. At least one heat-conducting heat pipe 162 may be disposed in at least one of the pipe holes and thermally connected to the hot-side adapter to receive heat from the hot side and to rapidly conduct the heat away.

The heat dissipating fin set 163 may include a plurality of heat dissipating fins, and each of the heat dissipating fins is provided with at least one through hole. The at least one heat conduction heat pipe 162 may be disposed to be thermally connected to the heat dissipation fins through the at least one through hole to increase a heat dissipation area and improve heat dissipation efficiency.

In the illustrated embodiment, the number of the heat conductive heat pipes 162 is plural. Hot end adapter may include two mounts 161a and two retaining members 161 b. The two mounts 161a may be mirror symmetric about a longitudinal central plane (i.e., an axial central plane) of the hot end and sandwich the hot end therebetween to thermally connect with the hot end.

The two mounting pieces 161a may be respectively formed with at least one pipe groove 164. Each locking member 161b may be formed with at least one tube groove 164 and be combined with the at least one tube groove 164 of one mounting member 161a to form at least one tube hole along the longitudinal direction of the heat conductive heat pipe 162 to be thermally connected to the at least one heat conductive heat pipe 162, so as to improve the reliability of the hot end adapter and facilitate the assembly of the hot end adapter with the heat conductive heat pipe 162.

Each retaining member 161b may be split with the portion of mounting member 161a remote from the hot end to further improve assembly efficiency.

Surfaces of the two mounting pieces 161a and the two locking pieces 161b near the cold ends may be formed with at least one rib extending in a longitudinal direction of the heat conductive heat pipe 162 to improve structural strength of the two mounting pieces 161a and the two locking pieces 161 b.

In some embodiments, at least one thermally conductive heat pipe 162 may be provided extending from the hot end adapter to one lateral side of the cold end of the Stirling cooler 120.

The number of the stirling vents 116 may be two, one of the stirling vents 116 may be opened on a lateral side wall of the stirling heat dissipation region 114b located at a side of the cold end near the heat dissipation fin set 163, and the other stirling vent 116 may be opened on a portion of a rearward side wall (i.e., the cover plate 115) of the stirling heat dissipation region 114b located at a rear side of the at least one heat-conducting heat pipe 162, so as to further improve the heat dissipation efficiency and reduce the heat transferred from the heat pipe to the cold end.

The heat sink 160 may also include a Stirling heat sink blower (obscured from view by the grill at the Stirling vent 116). The stirling heat sink fan may be disposed at the stirling vent 116 of the lateral sidewall of the stirling heat sink region 114b to further improve heat dissipation efficiency while providing a compact structure and more reliable heat sink fan installation.

In some embodiments, the refrigerator-freezer 100 may further include a plurality of spring suspensions 182 evenly distributed in the circumferential direction of the stirling cooler 120. Each spring suspension 182 may be fixedly connected to the housing 180 and the stirling cooler 120 to suspend the stirling cooler 120 within the housing 180 to reduce or even eliminate vibration of the stirling cooler 120 in all directions while stabilizing and securing the installation of the stirling cooler 120, thereby preventing the vibration generated by the stirling cooler 120 from being amplified via the heat conducting heat pipes 162 and the heat sink fin sets 163.

Each spring suspension 182 may include a first mounting plate fixedly connected to the housing of the stirling cooler 120, a second mounting plate fixedly connected to the housing 180, and two tension springs having two ends respectively fixedly connected to the first mounting plate and the second mounting plate, and extending lines in the tension direction intersecting with one side of the first mounting plate away from the second mounting plate.

The cover case 180 may be provided with a plurality of recesses recessed toward the inside thereof. The plurality of spring suspension devices 182 may be disposed to be fixedly connected to the bottom walls of the plurality of recesses, respectively, to improve the structural strength of the housing 180, reduce the thickness of the housing 180, and save the production cost of the housing 180.

Fig. 6 is a schematic cross-sectional view of the resilient footpad 190 of fig. 4. Referring to fig. 4 and 6, in some embodiments, the bottom of the casing 180 may be provided with a plurality of feet 183. The refrigerating and freezing apparatus 100 may further include a plurality of elastic feet 190 respectively disposed between the plurality of feet 183 and the mounting surface of the mounting housing 180 to further reduce the vibration of the stirling cooler 120.

In particular, the mounting surface may be provided with a plurality of mounting posts 118 extending upwardly and being annular in cross-section. Each of the elastic legs 190 may be formed with a mounting hole 191 penetrating the elastic leg 190 in a vertical direction and a mounting groove 192 extending in a circumferential direction thereof and opening outward. Wherein, the internal perisporium of erection column 118 can be used for cooperating with the fastener, and erection column 118 can be located to mounting hole 191 cover, and stabilizer blade 183 joint in mounting groove 192 to reduce stirling cooler 120's vibration in vertical direction, and reduce certain stirling cooler 120's vibration in the horizontal direction, and then prevent that the vibration that stirling cooler 120 produced from enlargiing via heat conduction heat pipe 162 and radiating fin group 163.

In the embodiment of fig. 4, each half shell 181 is provided with one leg 183, and each leg 183 is configured to be snapped into the mounting grooves 192 of the two resilient pads 190.

An outer diameter of a portion of each elastic foot 190 located at a lower side of the installation groove 192 may be greater than an outer diameter of a portion located at an upper side of the installation groove 192 to save production costs and improve reliability of the elastic foot 190.

Each elastic pad foot 190 can also be provided with two buffer grooves 193 which are mutually communicated with the mounting hole 191 and are respectively positioned on the inner side and the lower side of the mounting groove 192, so that the air chamber formed by the two buffer grooves 193 and the mounting column 118 is utilized, the elasticity of the elastic pad foot 190 is improved, the vibration reduction effect is further improved, and the service life of the elastic pad foot 190 is prolonged.

The cover 180 may be made of metal to improve a shielding effect of the cover 180. In some embodiments, the enclosure 180 may be made of steel. The thickness of the housing 180 can be 2-5 mm, such as 2mm, 3mm, 4mm or 5mm, to reduce the size of the mounting groove 192, thereby improving the elasticity of the elastic foot pad 190.

Fig. 7 is a schematic rear view of a refrigeration freezer 100 according to another embodiment of the present invention; fig. 8 is a schematic partial view of the equipment compartment 114 of the refrigeration freezer 100 shown in fig. 7. Referring to fig. 7 and 8, the difference between the embodiments of fig. 1 to 6 is that the number of heat-conducting heat pipes 162 is plural and extends from the hot-end adapter to both lateral sides of the hot end. That is, at least one heat conduction pipe 162 extends to one lateral side of the hot end, and at least one heat conduction pipe 162 extends to the other lateral side of the hot end, so as to improve the stress uniformity of the hot end adapter, and further improve the reliability of the hot end adapter.

The number of the stirling vents 116 may be two, one of the stirling vents 116 may be opened on a lateral side wall of the stirling heat dissipation region 114b, and the other stirling vent 116 may be opened on a portion of a rear side wall of the stirling heat dissipation region 114b located at a rear side of the heat conductive heat pipe 162 away from the lateral side wall, so that heat exchange between the air outside the engine and the heat conductive heat pipe 162 and the heat dissipation fin group 163 is more sufficient.

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

1. A refrigeration freezer apparatus, comprising:

a case defining at least one storage compartment and a device compartment;

2. A refrigerator-freezer as claimed in claim 1, further comprising:

3. A refrigerator-freezer according to claim 2,

the compressor and the Stirling refrigerator are arranged in parallel in the transverse direction; and is

4. A refrigerator-freezer according to claim 2,

the compressor heat dissipation area and the Stirling heat dissipation area are respectively provided with at least one compressor vent and at least one Stirling vent which are communicated with the external environment.

5. A refrigerator-freezer according to claim 4, wherein the Stirling refrigeration system further comprises a heat sink, the heat sink being disposed in the Stirling heat sink region and comprising:

6. A refrigerator-freezer according to claim 5,

the heat conducting heat pipes are multiple and extend to the two transverse sides of the hot end from the hot end adapter respectively; and is

7. A refrigerator-freezer according to claim 5,

the at least one heat conduction heat pipe is arranged to extend from the hot end adapter to one transverse side of the cold end of the Stirling refrigerator; and is

8. A refrigerator-freezer according to claim 6 or 7, wherein the heat sink further comprises:

9. A refrigerator-freezer according to claim 4,

the at least one compressor vent includes two compressor vents disposed upstream and downstream of the stirling cooler and the compressor, respectively; and the refrigerating and freezing device further comprises:

10. A refrigerator-freezer according to claim 9, wherein the vapour compression refrigeration system further comprises: