CN111059830B

CN111059830B - Refrigerating and freezing device

Info

Publication number: CN111059830B
Application number: CN201911379970.6A
Authority: CN
Inventors: 刘煜森; 房雯雯; 李靖; 万新明; 野田俊典; 刘会; 孙永升; 陶瑞涛
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: 2023-10-20
Anticipated expiration: 2039-12-27
Also published as: CN111059830A

Abstract

The application provides a refrigerating and freezing device. The refrigeration and freezer includes a housing, a Stirling refrigeration system, and a first heat sink. The housing defines at least one storage compartment. At least a portion of the Stirling refrigeration system is disposed within or to the storage compartment to provide refrigeration to the storage compartment, the Stirling refrigeration system including a Stirling refrigerator. The first heat radiating device is arranged to be in thermal connection with the main body of the Stirling refrigerator, so that the service life of the Stirling refrigerator is prolonged, the failure rate of the Stirling refrigerator is reduced, the performance of the Stirling refrigerator is improved, and the refrigeration efficiency of a Stirling refrigerating system is further improved.

Description

Refrigerating and freezing device

Technical Field

The application relates to the field of refrigeration, in particular to a refrigeration and freezing device adopting a Stirling refrigeration system for refrigeration.

Background

With the importance of people on health, the household reserve of high-end food materials is also increasing. Through researches, the storage temperature of the food material is lower than the vitrification temperature of the food material, 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 domestic refrigerators are refrigerated by adopting a vapor compression mode, and refrigerators adopting semiconductor, magnetic refrigeration and other modes are developed in recent years, but the temperature in the refrigerator is difficult to reach below-30 ℃ due to the limitation of refrigeration efficiency. The Stirling refrigerating system is adopted for refrigerating in the fields of aerospace, medical treatment and the like, and the refrigerating temperature of the Stirling refrigerating system can be lower than minus 200 ℃. But the cold end and the hot end of the stirling cooler are closer to each other and the main body is more difficult to dissipate heat.

Disclosure of Invention

It is an object of the present application to overcome at least one of the disadvantages of the prior art and to provide a refrigeration and freezing apparatus employing a stirling refrigeration system for refrigeration.

A further object of the present application is to improve the heat dissipation efficiency of the body and hot side of a stirling cooler.

It is yet a further object of the present application to reduce vibration of a Stirling refrigeration system.

In particular, the present application provides a refrigerating and freezing apparatus characterized by comprising:

the box body is limited with at least one storage compartment;

a Stirling refrigeration system, at least a portion of which is disposed within or to the storage compartment to provide refrigeration to the storage compartment, the Stirling refrigeration system comprising a Stirling refrigerator; and

a first heat sink is disposed in thermal communication with the body of the Stirling cooler.

Optionally, the first heat dissipation device includes:

at least one body connector configured to be thermally coupled to a body of the Stirling refrigerator, each body connector having a first tube hole; and

at least one first heat conduction heat pipe is respectively arranged in the first pipe holes of the at least one main body connector and is in thermal connection with the at least one main body connector.

Optionally, each heat-conducting heat pipe includes at least one bending part, and a bending angle of at least one bending part is greater than or equal to 90 ° and less than 360 °.

Optionally, each of the body connectors comprises:

a connection block configured to be thermally connected to a main body of the Stirling refrigerator; and

the end plate is fixedly connected with the connecting block; wherein the method comprises the steps of

The connecting block and the end plate are respectively provided with a first pipe groove, and the first pipe grooves of the connecting block and the end plate are arranged to form the first pipe holes in a spliced mode along the longitudinal direction of the first heat conduction heat pipe and clamp the first heat conduction heat pipe therebetween.

Optionally, the refrigeration and freezing device further comprises:

at least one heat radiating fin group, each of which comprises a plurality of heat radiating fins and is arranged to be thermally connected with at least one first heat conducting heat pipe.

Optionally, the refrigeration and freezing device further comprises:

a housing provided outside the main body of the Stirling refrigerator; and is also provided with

The at least one radiating fin group is arranged on the outer side of the housing.

Optionally, the refrigeration and freezing device further comprises a second heat dissipation device, and the second heat dissipation device comprises:

the hot end adapter is arranged to be in thermal connection with the hot end of the Stirling refrigerator and is provided with a plurality of second pipe holes; and

the second heat conduction pipes are respectively arranged in the second pipe holes and are in thermal connection with the hot end adapter; wherein the method comprises the steps of

Each radiating fin group is arranged to be thermally connected with a plurality of the second heat conduction heat pipes.

Optionally, each of the heat-conducting heat pipes includes:

at least one radial segment arranged to extend radially outward of the Stirling cooler; and

at least one axial segment arranged to extend in an axial direction of the Stirling refrigerator; wherein the method comprises the steps of

The extending end of each heat conducting heat pipe extending from its corresponding connector or adapter is the axial section extending in the axial direction, and the at least one heat radiating fin group is at least partially arranged in thermal connection with the axial section.

Optionally, the number ratio of the first heat conduction heat pipe to the second heat conduction heat pipe thermally connected with each radiating fin group is 1/3-1/5.

Optionally, a portion of the plurality of second heat-conducting heat pipes thermally connected to one of the heat-dissipating fin groups is distributed radially outside a portion of the at least one first heat-conducting heat pipe thermally connected to the heat-dissipating fin group.

The inventors of the present application creatively recognized the effect of heat from the body of a Stirling refrigerator on the performance of the Stirling refrigerator, particularly when the Stirling refrigerator is located in a small space. The application sets the independent heat radiation device for the main body of the Stirling refrigerator, which not only prolongs the service life of the Stirling refrigerator and reduces the failure rate of the Stirling refrigerator, but also improves the performance of the Stirling refrigerator and further improves the refrigeration efficiency of the Stirling refrigerating system. Before the present application, those skilled in the art generally consider that the heat generated by the main body of the stirling cooler is far less than that generated by the hot end, and the performance of the stirling cooler is affected in a negligible way, and only the heat dissipating device is provided for the hot end.

Furthermore, the heat radiating fins are arranged to be simultaneously in thermal connection with the first heat conducting heat pipe radiating for the main body and the second heat conducting heat pipe radiating for the hot end, and the part, connected with the heat radiating fins, of the second heat conducting heat pipe is distributed on the radial outer side of the part, connected with the heat radiating fins, of the first heat conducting heat pipe, so that the heat radiating fins are compact in structure and small in occupied space, and the whole heat radiating efficiency of the main body and the hot end is optimized under the condition that the heat radiating fins with the same size are adopted, and further the refrigerating efficiency of the Stirling refrigerating system is improved.

Further, the heat conduction heat pipe comprises at least one radial section and at least one axial section, and all or part of the radiating fins are arranged on the axial section with the largest radial distance from the Stirling refrigerator, so that vibration generated by the Stirling refrigerator is prevented from being amplified by the heat conduction heat pipe and the radiating fins, reliability of the first radiating device and the second radiating device is improved, and service lives of connection structures among the Stirling refrigerator, the main body connector, the hot end adapter and the heat conduction heat pipe and the radiating fins are prolonged.

Furthermore, the Stirling refrigerator is suspended in the housing through the plurality of spring suspension devices distributed in the circumferential direction of the Stirling refrigerator, and the plurality of elastic cushion feet are arranged between the bottom support feet and the mounting surface of the housing, so that vibration generated by the Stirling refrigerator is prevented from being transmitted to the housing to resonate with the housing and the box body, the Stirling refrigerator is stably and reliably mounted, and meanwhile, vibration of the Stirling refrigerator is reduced or even eliminated in all directions, and user experience is further improved.

The above, as well as additional objectives, advantages, and features of the present application will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present application when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic rear view of a refrigerated chiller according to one embodiment of the present application;

FIG. 2 is a schematic rear view of the refrigeration and freezer of FIG. 1 with the cover plate of the device chamber removed;

FIG. 3 is a schematic rear view of the refrigeration and freezer of FIG. 2 with one half shell, one resilient pad, and a thermal 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 Stirling refrigeration system of FIG. 4 with the cold guide removed;

FIG. 6 is a schematic exploded view of the first heat sink of FIG. 5;

FIG. 7 is a schematic exploded view of the second heat sink of FIG. 5;

fig. 8 is a schematic cross-sectional view of the resilient pad of fig. 4.

Detailed Description

Fig. 1 is a schematic rear view of a refrigerated chiller 100 according to one embodiment of the present application; fig. 2 is a schematic rear view of the refrigeration and freezer 100 of fig. 1 with the cover plate 115 of the device chamber 114 removed. Referring to fig. 1 and 2, a refrigeration 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, a stirling refrigeration system for refrigerating the at least one storage compartment and a vapor compression refrigeration system for refrigerating the at least one storage compartment, respectively, and a controller for controlling operation of the vapor compression refrigeration system and the stirling refrigeration system.

In the present application, at least one is one, two or more than two. The refrigeration and freezing device 100 may be a refrigerator, freezer, ice chest, or the like.

The case may include an outer case 111, at least one inner container disposed in the outer case 111, and a heat insulation layer disposed between the outer case 111 and the at least one inner container. Wherein, at least one inner container is limited with at least one storing compartment respectively.

Both the vapor compression refrigeration system and the Stirling refrigeration system may be configured such that at least a portion is disposed within or in communication with one of the storage compartments to provide refrigeration to the storage compartment.

In the illustrated embodiment, the vapor compression refrigeration system may be configured to provide refrigeration to a storage compartment defined by the liner 112 and the liner 113. The Stirling refrigeration system may be configured to provide only cold to the storage compartment defined by the liner 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 evaporator can be arranged in at least one storage compartment respectively.

The Stirling refrigeration system may include at least one Stirling cooler 120, at least one cold guide 150 thermally coupled to a cold side of the at least one Stirling cooler 120, respectively, and at least one heat sink to dissipate heat from the Stirling cooler 120. Wherein, the cold guide 150 may be disposed partially inside the liner 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 to drive the movement of the piston. Wherein the housing may be composed of a body 121 and a cylindrical portion 122. The drive mechanism may be disposed within the body 121. The piston may be configured to reciprocate within barrel 122 to form a cold end and a hot end.

The outer housing 111 may also define a device chamber 114. The compressor 131 and the Stirling refrigerator 120 may be disposed in the device chamber 114, so that the structure is compact, the box body has a larger storage space, and the installation, maintenance and circuit layout of the compressor 131 and the Stirling refrigerator 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 sink 114a and a Stirling heat sink 114b. The compressor 131 may be disposed in the compressor heat dissipation area 114a, and the hot end of the stirling cooler 120 may be disposed in the stirling heat dissipation area 114b, so as to avoid mutual interference between the heat generated by the compressor 131 and the hot end of the stirling cooler 120, thereby reducing energy consumption and improving refrigeration efficiency of the vapor compression refrigeration system and the stirling refrigeration system.

The compressor heat sink 114a and the Stirling heat sink 114b may be provided with at least one compressor vent 117 and at least one Stirling vent 116, respectively, in communication with the outside environment to reject heat to the outside environment. In the present application, the outside environment refers to the environment surrounding the refrigeration and freezer 100.

The compressor 131 and the stirling cooler 120 may be juxtaposed in the transverse direction. The main body 121 of the stirling cooler 120 may be at least partially disposed in the compressor heat sink 114a to improve the compactness of the vapor compression refrigeration system and the stirling refrigeration system while ensuring heat dissipation efficiency, thereby reducing the footprint of the device chamber 114.

In some embodiments, the device chamber 114 may be located at the bottom of the rear side of the enclosure. The Stirling cooler 120 may be disposed vertically within the device chamber 114 with its cold end facing upward. 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 enclosure. In some further embodiments, the Stirling cooler 120 may be disposed vertically within the device chamber 114 with its cold end facing downward. 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.

Fig. 3 is a schematic rear view of the refrigeration and freezer 100 of fig. 2 with one of the half shells 181, one of the resilient feet 190, and the insulating cover 145 removed. Referring to fig. 2 and 3, the refrigerator-freezer 100 may further include a thermal cover 145. The heat preservation cover 145 may be configured to separate the cold end and the hot end of the stirling cooler 120 from the inside and the outside thereof, so as to avoid the heat interference of the hot end and the cold end, and make most or all of the cold energy generated by the cold end be transmitted to the cryogenic compartment, thereby improving the refrigeration efficiency of the stirling cooler 120.

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

The enclosure 180 may be comprised of two half-shells 181 that are mirror symmetrical about a longitudinal central plane of symmetry of the Stirling cooler 120. I.e., the two halves 181 of the housing 180 may be mirror symmetric about a plane coplanar with the direction of piston motion 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 portion of the housing 180 near the hot end may be perforated to provide a through hole to lead out the cold and hot ends of the Stirling cooler 120.

The compressor heat dissipation area 114a may also be provided with a compressor heat dissipation fan 133. The at least one compressor vent 117 may include two compressor vents 117 disposed upstream and downstream of the Stirling refrigerator 120 and the compressor 131, respectively. The compressor heat rejection fan 133 may be configured to induce airflow from the compressor 131 to the body 121 of the Stirling refrigerator 120 to generally improve the heat rejection efficiency of the Stirling refrigeration system and vapor compression refrigeration system, further reduce energy consumption, improve refrigeration efficiency, and avoid the problem of potential safety hazards due to overheating.

The condenser 132 may also be disposed in the compressor heat dissipation area 114a and upstream of the compressor 131 to further improve the compactness of the refrigeration and freezer 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, improve air volume, and further improve heat dissipation efficiency.

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

The at least one compressor vent 117 may further include another two compressor vents 117 provided to portions of the cover plate 115 corresponding to the condenser 132 and to the body 121 of the Stirling refrigerator 120, respectively, 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 Stirling refrigeration system of FIG. 4 with the cold guide 150 removed; fig. 6 is a schematic exploded view of the first heat sink 170 of fig. 5. Referring to fig. 4-6, the refrigerated freezer 100 can 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 coupled 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 the installation of the stirling cooler 120, thereby preventing the vibration generated by the stirling cooler 120 from being amplified via the heat sink.

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 cover 180, and two tension springs having both ends fixedly connected to the first and second mounting plates, respectively, and extending lines of the tension directions intersecting at one side of the first mounting plate away from the second mounting plate.

The cover 180 may be provided with a plurality of recesses recessed toward the inside thereof. The plurality of spring suspension devices 182 may be disposed in fixed connection with the bottom walls of the plurality of recesses, respectively, to improve structural strength of the cover 180, reduce thickness of the cover 180, and save production costs of the cover 180.

In particular, the heat dissipating device may include a first heat dissipating device 170 thermally coupled to the body 121 of the Stirling refrigerator 120 to dissipate heat from the body 121 of the Stirling refrigerator 120, thereby prolonging the service life of the Stirling refrigerator 120, reducing the failure rate of the Stirling refrigerator 120, and improving the performance of the Stirling refrigerator 120.

The first heat sink 170 may include at least one body connector thermally coupled to the body 121 of the Stirling refrigerator 120 and at least one first heat conductive heat pipe 173 thermally coupled to the at least one body connector, respectively.

Specifically, each of the main body connectors may be provided with a first pipe hole, and the at least one first heat-conducting heat pipe 173 may be thermally connected to the main body connector by being respectively disposed in the first pipe holes of the at least one main body connector, so as to receive heat of the main body 121 and rapidly conduct out the heat.

Each body connector may include a connection block 171 thermally connected to the body 121 of the stirling cooler 120 and an end plate 172 fixedly connected to the connection block 171.

The connection block 171 and the end plate 172 may be respectively provided with a first pipe groove 174. The first pipe groove 174 of the connection block 171 and the first pipe groove 174 of the end plate 172 may be provided to be spliced to form a first pipe hole in the longitudinal direction of the first heat conduction heat pipe 173 with the first heat conduction heat pipe 173 interposed therebetween, to facilitate the assembly of the body connector with the first heat conduction heat pipe 173.

In some embodiments, the number of first heat sinks 170 may be two and mirror-symmetrical about the longitudinal center plane of the body 121 to achieve uniform heat dissipation of the body 121.

The Stirling refrigeration system may also include at least one heat dissipating fin set 163. Each of the heat radiating fin groups 163 may include a plurality of heat radiating fins and be disposed to be thermally connected with at least one first heat conducting heat pipe 173 to increase a heat exchanging area of the first heat conducting heat pipe 173 and improve heat radiating efficiency.

At least one heat radiating fin group 163 may be disposed at an outer side of the housing 180 to improve heat radiating efficiency of the body 121. The first heat conductive heat pipe 173 may be led out from the through hole of the housing 180 to the outside of the housing 180 and thermally connected with the heat radiating fin group 163.

In some embodiments, the number of fin sets 163 may be one, disposed on one lateral side of the cold end of the Stirling cooler 120.

The number of the Stirling vents 116 may be two, one Stirling vent 116 may be disposed on a lateral side wall of the Stirling heat dissipation area 114b located on a side of the cold end close to the heat dissipation fin group 163, and the other Stirling vent 116 may be disposed on a portion of a rear side wall (i.e., the cover plate 115) of the Stirling heat dissipation area 114b located on a rear side of the heat dissipation fin group 163, so as to further improve heat dissipation efficiency and reduce heat transferred from the heat conduction heat pipe and the heat dissipation fins to the cold end.

In other embodiments, the number of the heat dissipation fin groups 163 may be two, and the heat dissipation fin groups are respectively disposed on two lateral sides of the hot end of the Stirling refrigerator 120, so as to make the stress of the heat conduction heat pipe uniform and improve the reliability of the connection structure.

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

The heat sink may also include a Stirling cooler (obscured by a grill at Stirling vent 116 in the view shown). The Stirling heat dissipation blower may be disposed at the Stirling vent 116 of the lateral side wall of the Stirling heat dissipation region 114b to further improve heat dissipation efficiency while enabling compact structure and more reliable installation of the heat dissipation blower.

Fig. 7 is a schematic exploded view of the second heat sink 160 of fig. 5. Referring to fig. 5 and 7, in some embodiments, the heat sink may further comprise a second heat sink 160 thermally coupled to the hot end of the stirling cooler 120 to dissipate heat from the hot end of the stirling cooler 120.

The second heat sink 160 may include a hot side adapter thermally coupled to the hot side of the Stirling refrigerator 120 and a plurality of second heat conductive heat pipes 162 thermally coupled to the hot side adapter.

Specifically, the hot end adapter may be provided with a plurality of second tube holes, and the plurality of second heat-conducting heat tubes 162 may be thermally connected to the hot end adapter by being respectively disposed in the plurality of second tube holes, so as to receive heat of the hot end and rapidly conduct out the heat.

The hot end adapter may include two mounts 161a and two locks 161b. The two mounts 161a may be mirror symmetrical about a longitudinal center plane (i.e., an axial center plane) of the hot side and sandwich the hot side therebetween to thermally connect with the hot side.

The two mounting members 161a and the two locking members 161b may be formed with at least one second tube groove 164, respectively. The at least one second tube groove 164 of each locking member 161b may be formed with at least one second tube groove 164 of one mounting member 161a along the longitudinal direction of the second heat conductive heat pipe 162 to be coupled thermally with the at least one second heat conductive heat pipe 162 to improve the reliability of the hot side adapter and facilitate the assembly of the hot side adapter with the second heat conductive heat pipe 162.

Each locking member 161b may be engaged with a portion of the mounting member 161a remote from the hot end to further improve assembly efficiency and to make the temperature of the at least one second heat conductive heat pipe 162 uniform.

The surfaces of the two mounting members 161a and the two locking members 161b near the cold end and the surface of the end plate 172 remote from the body 121 may be formed with at least one rib extending in the longitudinal direction of the corresponding heat conductive pipe to improve the structural strength of the two mounting members 161a, the two locking members 161b and the end plate 172.

Each of the heat dissipation fin groups 163 may be further configured to be thermally connected to the plurality of second heat conductive heat pipes 162, so as to increase the heat exchange area of the second heat conductive heat pipes 162 and improve the heat dissipation efficiency.

In an embodiment in which the number of the heat radiating fin groups 163 is one, the plurality of second heat conductive heat pipes 162 are each thermally connected to the heat radiating fin groups 163.

In an embodiment in which the number of the heat radiating fin groups 163 is two, the number of the second heat conductive heat pipes 162 may be four, six or an even number of more than six, and are thermally connected to the two heat radiating fin groups 163, respectively. The number of second heat conductive heat pipes 162 to which each heat radiating fin group 163 is connected may be equal.

In some embodiments, the number ratio of the first heat conductive heat pipes 173 to the second heat conductive heat pipes 162 thermally connected to each heat radiating fin group 163 may be 1/3 to 1/5, for example, 1/3, 1/4 or 1/5, to improve the overall heat radiating efficiency.

In some embodiments, the portion of the plurality of second heat-conducting heat pipes 162 thermally connected to the heat-dissipating fin set 163 may be distributed radially outside the portion of the at least one first heat-conducting heat pipe 173 thermally connected to the heat-dissipating fin set 163, so as to improve the structural compactness of the heat-dissipating device, reduce the occupied space, and optimize the overall heat-dissipating efficiency of the main body 121 and the hot end when the heat-dissipating fins with the same size are used, thereby improving the refrigeration efficiency of the stirling refrigeration system.

In the illustrated embodiment, the number of the heat radiating fin groups 163 is one. The number of the first heat conduction heat pipes 173 is two, and is located in the middle of the heat dissipation fin group 163. The number of the second heat-conductive heat pipes 162 is eight, and is located on the side of the two first heat-conductive heat pipes 173 closer to the periphery of the heat-radiating fin group 163.

In some embodiments, each heat pipe may include at least one bend 175, and the bend angle of the at least one bend 175 may be greater than or equal to 90 ° and less than 360 °, for example, 90 °, 150 °, 163 °, 176 °, 191 °, 230 °, or 250 °, to reduce vibration transmitted to the heat sink by the stirling cooler 120.

In some further embodiments, at least one bend 175 may be a 90 ° rounded corner. That is, each heat conductive heat pipe may include at least one radial segment 162a extending radially outward of the Stirling refrigerator 120 and at least one axial segment 162b extending in an axial direction of the Stirling refrigerator 120 to facilitate thermal connection of the heat dissipating fin group 163 with the heat conductive heat pipe while reducing vibration.

The extension end of each heat conducting heat pipe extending from its corresponding connector or adapter is an axial segment 162b extending in the axial direction.

At least one heat dissipating fin set 163 may be at least partially disposed in thermal communication with the distal axial segment 162b to prevent vibration generated by the Stirling refrigerator 120 from being amplified by the heat conducting heat pipe and the heat dissipating fins, to improve reliability of the first heat sink 170 and the second heat sink 160, and to extend the useful life of the connection structure between the Stirling refrigerator 120, the body connector, the hot end adapter, the heat conducting heat pipe and the heat dissipating fins.

Fig. 8 is a schematic cross-sectional view of the resilient pad 190 of fig. 4. Referring to fig. 4 and 8, the bottom of the cover 180 may be provided with a plurality of legs 183. The refrigeration and freezer 100 can also include a plurality of resilient pads 190 disposed between the plurality of feet 183 and the mounting surface of the mounting enclosure 180, respectively, to further reduce vibration of the Stirling cooler 120.

Specifically, 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 casters 190 may be provided with a mounting hole 191 penetrating the elastic caster 190 in a vertical direction, and a mounting groove 192 extending in a circumferential direction thereof and opening outward. Wherein, the inner peripheral wall of the mounting post 118 can be used to cooperate with the fastener, the mounting hole 191 can be sleeved on the mounting post 118, and the supporting leg 183 is clamped in the mounting groove 192, so as to reduce the vibration of the Stirling refrigerator 120 in the vertical direction and reduce the vibration of a certain Stirling refrigerator 120 in the horizontal direction, thereby preventing the vibration generated by the Stirling refrigerator 120 from being amplified by the heat conduction heat pipe and the heat dissipation 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 snap into a mounting groove 192 of two resilient pads 190.

The outer diameter of the portion of each of the elastic casters 190 located at the lower side of the mounting groove 192 may be larger than the outer diameter of the portion located at the upper side of the mounting groove 192 to save production costs and improve reliability of the elastic casters 190.

Each elastic foot 190 may further be provided with two buffer slots 193 which are mutually communicated with the mounting hole 191 and are respectively located at the inner side and the lower side of the mounting slot 192, so that the elasticity of the elastic foot 190 is improved by using the air chamber formed by the two buffer slots 193 and the mounting column 118, thereby improving the vibration reduction effect and prolonging the service life of the elastic foot 190.

The cover 180 may be made of metal to improve the shielding effect of the cover 180. In some embodiments, the housing 180 may be made of steel. The thickness of the cover 180 may be 2 to 5mm, for example, 2mm, 3mm, 4mm, or 5mm, to reduce the size of the installation groove 192 and thus improve the elasticity of the elastic pad 190.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the application have been shown and described herein in detail, many other variations or modifications of the application consistent with the principles of the application may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the application. Accordingly, the scope of the present application should be understood and deemed to cover all such other variations or modifications.

Claims

1. A refrigeration and freezer comprising:

the box body is limited with at least one storage compartment;

a Stirling refrigeration system, at least a portion of which is disposed within or to the storage compartment to provide refrigeration to the storage compartment, the Stirling refrigeration system comprising a Stirling refrigerator;

a first heat sink configured to be thermally coupled to the body of the Stirling refrigerator, comprising at least one first heat-conducting heat pipe;

the second heat dissipation device is arranged to be in thermal connection with the hot end of the Stirling refrigerator and comprises a plurality of second heat conduction heat pipes; and

at least one heat radiating fin group, each of the heat radiating fin groups including a plurality of heat radiating fins and being disposed in thermal connection with at least one of the first heat conductive heat pipe and a plurality of the second heat conductive heat pipes; wherein,,

the quantity ratio of the first heat conduction heat pipe to the second heat conduction heat pipe which are thermally connected with each radiating fin group is 1/3-1/5; and is also provided with

The parts of the second heat conduction heat pipes thermally connected with one radiating fin group are distributed on the radial outer side of the parts of at least one first heat conduction heat pipe thermally connected with the radiating fin group.

2. The refrigeration chiller of claim 1, wherein the first heat sink further comprises:

at least one body connector configured to be thermally coupled to a body of the Stirling refrigerator, each body connector having a first tube hole; wherein,,

the at least one first heat conduction heat pipe is respectively arranged in the first pipe holes of the at least one main body connector and is in thermal connection with the at least one main body connector.

3. A refrigerating and freezing apparatus according to claim 1, wherein,

each heat conduction heat pipe comprises at least one bending part, and the bending angle of at least one bending part is more than or equal to 90 degrees and less than 360 degrees.

4. The refrigeration and chiller of claim 2 wherein each of said body connectors comprises:

5. The refrigeration and freezer of claim 1, further comprising:

6. The refrigeration chiller of claim 1, wherein the second heat sink further comprises:

the hot end adapter is arranged to be in thermal connection with the hot end of the Stirling refrigerator and is provided with a plurality of second pipe holes; wherein,,

the plurality of second heat conduction pipes are respectively arranged in the plurality of second pipe holes and are in thermal connection with the hot end adapter.

7. The refrigeration chiller of claim 6 wherein each of the thermally conductive heat pipes comprises: