CN217817622U - Refrigerator - Google Patents

Abstract

The application relates to the technical field of low-temperature storage, and discloses a refrigerator which comprises a shell, a partition plate, a sliding rail, a fixed support and a Stirling refrigerator, wherein the shell is provided with an accommodating space; the partition plate divides the accommodating space into a refrigerating space and a cold storage space, and the refrigerating space is provided with an opening; the sliding track is arranged on the inner wall of the refrigerating space, and the sliding direction of the sliding track faces towards the opening; the fixed bracket is arranged on the sliding track in a sliding manner; a Stirling refrigerator fixed to the fixing bracket to slide along with the fixing bracket, the Stirling refrigerator being slidable between a first position pushed out of the refrigerating space and a second position pushed back into the refrigerating space; and the heat conduction device is used for transferring the cold energy generated by the Stirling refrigerator to the refrigerating space. Use the refrigerator that this application discloses, the stirling refrigerator passes through the fixed bolster and slides and set up in the refrigeration space, and when the refrigerator breaks down, the stirling refrigerator can be followed the refrigeration space and slided and released to maintain or change it, made things convenient for the user to use.

Description

Refrigerator

Technical Field

The application relates to the technical field of low-temperature storage, for example to a refrigerator.

Background

At present, a refrigerator can create a low-temperature environment, so that long-time storage of food, medicine, biological samples and other articles is realized. Most refrigerators create a low temperature environment by using a refrigerant circulation system, and a temperature zone is determined by the type of refrigerant and has a narrow temperature. The refrigerator refrigerated by the Stirling refrigerator does not need a refrigerant, the temperature zone is not limited by the type of the refrigerant, and the refrigerator can keep higher efficiency within the range of-150 ℃ to-20 ℃. When the Stirling refrigerator works, the compression cavity can generate heat, and the heat needs to be discharged in time so as to avoid influencing the low-temperature environment in the refrigerator.

The refrigerator comprises a refrigerator body and a refrigerator door, wherein a freezing chamber is arranged in the refrigerator body, a heat-insulating partition plate is arranged in the refrigerator body, the refrigerator body below the heat-insulating partition plate is a refrigerating working chamber, and heat dissipation holes are formed in the side face of the refrigerator body where the refrigerating working chamber is located. The back of the refrigerator body is provided with a cold guide pipe corresponding to the position of the freezing chamber, the cold guide pipe is a snakelike copper pipe with two closed ends, and a refrigerant working medium is filled in the copper pipe. And a Stirling refrigerating machine is arranged in the refrigerating working chamber, and heat exhausting fans are arranged on two sides of the Stirling refrigerating machine. The cold head of the Stirling refrigerator penetrates through the heat-insulation partition plate, and the cold head is connected with the cold guide pipe through the flexible heat conduction piece. The flexible heat conduction piece is a flexible metal sheet or a metal net, is provided with an upper arm and a lower arm, can generate elastic deformation longitudinally, and the lower arm of the flexible heat conduction piece is welded with the cold head.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the cold head of the Stirling refrigerator is positioned in the freezing chamber and is welded and connected with the flexible heat conduction piece, and if the refrigerator breaks down, the Stirling refrigerator is difficult to maintain and replace in the narrow freezing chamber.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a refrigerator to solve the problem of how to make the stirling cryocooler of the refrigerator easier to maintain and replace.

In some embodiments, the refrigerator includes a case, a partition, a sliding rail, a fixing bracket, and a stirling cooler, wherein the case is configured with an accommodating space; the partition board divides the accommodating space into a refrigerating space and a cold storage space, and the refrigerating space is provided with an opening; the sliding track is arranged on the inner wall of the refrigerating space, and the sliding direction of the sliding track faces towards the opening; the fixed bracket is arranged on the sliding track in a sliding manner; a Stirling refrigerator fixed to the fixing bracket to slide together with the fixing bracket, the Stirling refrigerator being slidable between a first position pushed out of the refrigerating space and a second position pushed back into the refrigerating space; and the heat conduction device is used for transferring the cold energy generated by the Stirling refrigerator to the refrigerating space.

In some embodiments, the opening is opened on a first side wall of the refrigerating space, and the sliding rail is transversely arranged.

In some embodiments, the refrigerating space is provided with an air inlet and an air outlet, and the refrigerator further includes a fan disposed in the refrigerating space for driving air to flow from the air inlet to the air outlet.

In some embodiments, the sliding track comprises a first track and a second track, wherein the first track is disposed on a second sidewall of the refrigerated space adjacent to the first sidewall; the second rail is disposed on a third side wall of the refrigerated space, the third side wall being opposite the second side wall.

In some embodiments, the fixing bracket includes a first fixing arm and a second fixing arm, wherein the first fixing arm is slidably disposed on the first track; the second fixing arm is arranged on the second track in a sliding mode; the stirling refrigerator is fixed to the first fixing arm and the second fixing arm.

In some embodiments, the fixing bracket further comprises: the cover plate is fixed at the front ends of the first fixing arm and the second fixing arm and used for plugging and opening the opening.

In some embodiments, the cold head of the stirling cooler is configured with a docking recess; the heat conducting device comprises a heat pipe which penetrates through the partition plate, the first end of the heat pipe is positioned in the refrigerating space, and the second end of the heat pipe is positioned in the refrigerating space; when the Stirling refrigerator is located at the second position, the first end of the heat pipe is embedded into the butt-joint groove; when the Stirling refrigerator moves from the second position to the first position, the first end of the heat pipe is separated from the butt groove.

In some embodiments, the butt groove is a spiral groove, and the first end of the heat pipe has a shape corresponding to the spiral groove.

In some embodiments, the docking groove is a U-shaped groove, and the first end of the heat pipe has a shape corresponding to the U-shaped groove.

In some embodiments, the cold head of the stirling cooler is configured with a plurality of said U-shaped recesses and the heat conducting means comprises a plurality of said heat pipes.

The refrigerator provided by the embodiment of the disclosure can realize the following technical effects:

the Stirling refrigerator is arranged in the refrigerating space in a sliding mode through the fixing support, when the refrigerator breaks down, the Stirling refrigerator can be checked, maintained and replaced by sliding the Stirling refrigerator out, and time and labor are saved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of a refrigerator provided in an embodiment of the present disclosure;

fig. 2 is a schematic cross-sectional structural view of a refrigerator provided in an embodiment of the present disclosure;

fig. 3 is a schematic cross-sectional structure view of another refrigerator provided in the embodiment of the present disclosure;

fig. 4 is a schematic cross-sectional structure view of another refrigerator provided in the embodiment of the present disclosure;

fig. 5 is a schematic cross-sectional structure view of another refrigerator provided in the embodiment of the present disclosure;

fig. 6 is a schematic cross-sectional structural view of another refrigerator provided in an embodiment of the present disclosure.

Reference numerals:

reference numerals:

110: a housing; 120: a partition plate; 210: a refrigerated space; 215: opening the opening; 216: a cover plate; 217: an operation hole; 218: a baffle plate; 220: a refrigerated space; 230: a slide rail; 240: a fixed bracket; 250: a Stirling refrigerator; 251: a compression chamber; 252: cooling the head; 260: a heat conducting device; 261: a heat pipe; 271: an air inlet; 272: an air outlet; 273: a fan; 280: a flange plate.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and claims of the embodiments of the disclosure and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure may be understood as specific cases by those of ordinary skill in the art.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

As shown in fig. 1 to 6, an embodiment of the present disclosure provides a refrigerator including a housing 110, a partition 120, a sliding rail 230, a fixing bracket 240, and a stirling cooler 250, wherein the housing 110 is configured with an accommodating space; a partition 120 dividing the accommodating space into a refrigerating space 210 and a refrigerating space 220, the refrigerating space 210 being provided with an opening 215; a sliding rail 230 disposed on an inner wall of the refrigerating space 210, the sliding direction facing the opening 215; a fixed bracket 240 slidably disposed on the sliding rail 230; a stirling cooler 250 fixed to the fixing bracket 240 to slide together with the fixing bracket 240, the stirling cooler 250 being slidable between a first position pushed out of the refrigerating space 210 and a second position pushed back into the refrigerating space 210; and a heat transfer device 260 for transferring the cold generated from the stirling cooler 250 to the refrigerating space 220.

In the embodiment of the present disclosure, the refrigerator includes a housing 110, and the housing 110 configures an accommodating space. The partition 120 divides the accommodating space into a refrigerating space 210 and a refrigerating space 220. The partition 120 spatially separates the refrigerated space 210 from the refrigerated space 220 to reduce heat exchange between the refrigerated space 210 and the refrigerated space 220, and to maintain the two spatially and thermally independent of each other. The stirling cooler 250 is disposed in the refrigerating space 210, the stirling cooler 250 includes a cold head 252, and the temperature of the cold head 252 is continuously decreased when the stirling cooler 250 operates. The heat transfer device 260 transfers the cold generated from the stirling cooler 250 to the refrigerating space 220, thereby lowering the temperature of the refrigerating space 220. The stirling cooler 250 is fixed to the fixing bracket 240, and the fixing bracket 240 is slidably coupled to the sliding rail 230, so that the stirling cooler 250 is slidably coupled to the sliding rail 230 through the fixing bracket 240. The sectional area of the opening 215 of the refrigerating space 210 is larger than that of the stirling cooler 250, and the sliding rail 230 faces the opening 215 so that the stirling cooler 250 can be pushed out of or back from the opening 215 along the sliding rail 230. The opening 215 may be opened at the top of the refrigerating space 210, and in this case, the sliding rail 230 is vertically disposed and the stirling cooler 250 slides up and down. The opening 215 may also be opened on a side wall of the refrigerating space 210, in which case the sliding rail 230 is transversely disposed, may be disposed on a top wall of the refrigerating space 210, and may also be disposed on a side wall of the refrigerating space 210, and the stirling cooler 250 horizontally slides. The Stirling cooler 250 is in the service position when in the first position. With the Stirling cooler 250 in the service position, the Stirling cooler 250 may be located partially or entirely outside of the refrigerated space 210, and the Stirling cooler 250 may be easily serviced or replaced. The Stirling cooler 250 is in the operating position when in the second position. By adopting the arrangement form, the Stirling refrigerator 250 breaks down, and the Stirling refrigerator 250 can be maintained and replaced only by pushing out the Stirling refrigerator 250, so that the maintenance difficulty of the refrigerator is reduced, and the use by a user is facilitated.

Alternatively, the opening 215 is opened at a first sidewall of the refrigerating space 210, and the sliding rail 230 is laterally disposed.

The opening 215 is formed in the first side wall, the sliding rail 230 is transversely arranged, and the Stirling refrigerator 250 can be pushed out and pushed back horizontally, so that the required force is small, and the use by a user is further facilitated.

Optionally, the cooling space 210 is provided with an air inlet 271 and an air outlet 272, and the refrigerator further includes a fan 273 disposed in the cooling space 210 for driving air to flow from the air inlet 271 to the air outlet 272.

When the Stirling refrigerator 250 works, heat is generated, the air inlet 271 and the air outlet 272 are formed, and the fan 273 drives the space to flow from the air inlet 271 to the air outlet 272, so that the heat generated by the Stirling refrigerator 250 is taken away. Due to the arrangement mode, on one hand, the phenomenon that the temperature of the Stirling refrigerator 250 is increased to influence the operation of the Stirling refrigerator 250 can be avoided, and on the other hand, the phenomenon that the temperature of the refrigerating space 210 is increased to influence the temperature of the refrigerating space 220 can be avoided.

Alternatively, the fan 273 is provided corresponding to the compression chamber 251 of the stirling cooler 250.

During operation of the Stirling cooler 250, heat is primarily concentrated in the expansion chamber of the Stirling cooler 250. The fan 273 is disposed to correspond to the expansion chamber of the stirling cooler 250, and the air blown from the fan 273 is directly blown to the expansion chamber of the stirling cooler 250, so that the heat dissipation effect of the stirling cooler 250 can be improved.

Optionally, the sliding rail 230 includes a first rail and a second rail, wherein the first rail is disposed on a second sidewall of the refrigerating space 210, and the second sidewall is adjacent to the first sidewall; the second rail is disposed on a third sidewall of the refrigerating space 210, and the third sidewall is opposite to the second sidewall.

The first and second rails are arranged in parallel pairs, which provides better support for the stirling cooler 250.

Optionally, the fixing bracket 240 includes a first fixing arm and a second fixing arm, wherein the first fixing arm is slidably disposed on the first rail; the second fixed arm is arranged on the second track in a sliding manner; the stirling cooler 250 is fixed to the first fixing arm and the second fixing arm.

The fixing bracket 240 is provided with first and second fixing arms corresponding to the first and second rails, and the stirling cooler 250 is slidably connected to the first and second rails through the first and second fixing arms. When the stirling cooler 250 is replaced, the fixing bracket 240 may be removed together with the stirling cooler 250, or only the stirling cooler 250 may be removed while leaving the fixing bracket 240. With this arrangement, the fixing bracket 240 has a simple structure, and the sliding of the stirling cooler 250 is reliable.

Optionally, the fixing bracket 240 further comprises: and a cover plate 216 fixed to the front ends of the first and second fixing arms, the cover plate 216 being used to close and open the opening 215.

The cover plate 216 is fixed to the front ends of the first fixing arm and the second fixing arm, and when the stirling cooler 250 moves from the second position to the first position, the cover plate 216 moves along with the fixing bracket 240 to open the opening 215, so that the stirling cooler 250 can be pushed out of the opening 215. When the Stirling cooler 250 moves from the first position to the second position, the cover plate 216 moves with the fixing bracket 240 to close the opening 215, thereby preventing foreign objects from entering the refrigerating space 210. With such an arrangement, the cover plate 216 slides along with the Stirling refrigerator 250, simplifying the structure of the refrigerator and facilitating the use of the refrigerator by a user.

Optionally, the cold head 252 of the stirling cooler is configured with a docking recess; the heat transfer device 260 includes a heat pipe 261 penetrating the partition 120, having a first end located in the refrigerating space 210 and a second end located in the refrigerating space 220; wherein, when the stirling cooler 250 is in the second position, the first end of the heat pipe 261 is inserted into the docking groove; when the stirling cooler 250 moves from the second position to the first position, the first end of the heat pipe 261 is separated from the docking groove.

The Stirling refrigerator 250 is disposed in the refrigerating space 210, the Stirling refrigerator 250 includes a cold head 252, and the temperature of the cold head 252 is continuously lowered while the Stirling refrigerator 250 operates. The heat pipe 261 is a hollow pipe body filled with a refrigerant. The heat pipe 261 transfers the temperature by two-phase change of the refrigerant therein. The heat pipe 261 actively transfers heat from the refrigerated space 220 to the cold head 252 of the stirling cooler, thereby lowering the temperature of the refrigerated space 220. The first end of the heat pipe 261 is embedded in the butt-joint groove of the cold head 252 of the Stirling refrigerator, so that the contact area of the heat pipe 261 and the cold head 252 of the Stirling refrigerator can be increased, and the heat transfer effect of the heat pipe 261 is improved. The heat pipe 261 and the cold head 252 of the stirling cooler can be conveniently butted or separated by butting the heat pipe 261 and the butting groove. By using the refrigerator provided by the embodiment of the disclosure, the heat pipe 261 is directly connected with the cold head 252 of the stirling refrigerator, and the temperature difference between the first end and the second end of the hot end is large, so that the heat conduction efficiency of the heat pipe 261 can be improved, and further, the refrigeration effect of the refrigerator is improved; the first end of the heat pipe 261 is embedded into the butt-joint groove of the cold head 252, the contact area of the heat pipe 261 and the cold head 252 of the Stirling refrigerator is large, and the heat flow density of heat transferred by the heat pipe 261 can be improved; the first end of the heat pipe 261 and the cold head 252 of the Stirling refrigerator are in a quick disconnecting mode, so that the Stirling refrigerator 250 can be conveniently detached when the Stirling refrigerator breaks down, and the maintenance difficulty of the refrigerator is reduced.

Alternatively, the stirling cooler 250 is disposed horizontally, the docking groove is opened vertically, and the first end of the heat pipe 261 is inserted vertically into the docking groove.

The stirling cooler 250 is laterally disposed and operates with vibrations primarily in the horizontal direction. The butt-joint groove is vertically formed, so that even if the Stirling refrigerator 250 vibrates in the operation process, the heat pipe 261 can still be in good contact with the cold head 252 of the Stirling refrigerator. Moreover, the vibration of the stirling cooler 250 facilitates gas-liquid separation of the refrigerant in the heat pipe 261, and further, improves the heat transfer efficiency of the heat pipe 261.

Optionally, the docking recess opens into an end face of the cold head 252 of the stirling cooler.

The interior of the cold head 252 of the stirling cooler is an expansion cavity, so that the cold head 252 is a hollow cavity with a certain wall thickness, and the outer wall surface is cylindrical and comprises a side surface which is a curved surface and an end surface which is a plane. The side surface of the cold head 252 has a certain thickness, and if the side wall is provided with the butt joint groove, the cold head 252 is difficult to process and is easy to deform. The thickness of the end face of the cold head 252 is not limited, the butt joint grooves are formed in the end face of the cold head 252, machining is easy, machining of the butt joint grooves is convenient, and the butt joint grooves in various shapes can be formed.

Alternatively, the docking groove is a spiral-shaped groove, and the first end of the heat pipe 261 has a shape corresponding to the spiral-shaped groove.

The spiral line is in a ring shape with the diameter gradually increasing from inside to outside, and the spiral line-shaped groove can fully utilize the heat exchange area of the end face of the cold head 252. The first end of the heat pipe 261 is shaped like a spiral line corresponding to the first end, and when the first end of the heat pipe 261 is embedded into the butt groove, the first end is in full contact with the cold head 252, and heat exchange is uniform. Such an arrangement can improve the heat transfer effect of the heat pipe 261, and further, improve the cooling effect of the refrigerator.

Optionally, the docking groove is a U-shaped groove, and the first end of the heat pipe 261 has a shape corresponding to the U-shaped groove.

The butt joint groove is U-shaped, the first end of the heat pipe 261 is also U-shaped, the contact area between the heat pipe 261 and the cold head 252 of the Stirling refrigerator can be increased, and further the refrigerating effect of the refrigerator is improved.

Optionally, the cold head 252 of the Stirling cooler is configured with a plurality of U-shaped grooves and the heat transfer device 260 includes a plurality of heat pipes 261.

When the butt joint recess that stirling cooler's cold head 252 was seted up was the U-shaped recess, it is lower to the heat transfer area utilization ratio of stirling cooler 250 cold head 252 terminal surface, consequently, a plurality of U-shaped recesses have been seted up to the terminal surface of cold head 252, and a plurality of U go of recesses can be the parallel arrangement, also can the annular arrangement, and heat pipe 261 is provided with a plurality ofly, and the shape of the first end of every heat pipe 261 all corresponds with the shape of U go of recess. Therefore, the heat exchange area of the cold head 252 of the Stirling refrigerator 250 can be fully utilized, the heat conduction effect of the heat pipe 261 is improved, and the refrigeration effect of the refrigerator is further improved.

Optionally, a thermally conductive material is coated between the first end of the heat pipe 261 and the docking groove.

The heat conductive material may fill a gap between the first end of the heat pipe 261 and the docking groove, thereby further improving the heat exchange effect between the heat pipe 261 and the cold head 252 of the stirling cooler. Optionally, the thermally conductive material is a thermally conductive paste.

Optionally, the refrigerator further comprises a first heat preservation part and a second heat preservation part, wherein the first heat preservation part covers the cold head 252 of the stirling refrigerator; a second insulation portion covering a first end of the heat pipe 261; the first heat-preserving portion and the second heat-preserving portion are butted to form a heat-preserving space, and the cold head 252 of the stirling cooler and the first end of the heat pipe 261 are located in the heat-preserving space.

The Stirling cooler 250 is positioned to cool the space 210, and the compression chamber 251 of the Stirling cooler 250 generates heat. In order to avoid the influence of the heat emitted by the stirling cooler 250 on the refrigeration of the refrigerator, a first heat-insulating portion and a second heat-insulating portion are provided to isolate the heat pipe 261 from being transferred. Specifically, the first heat-retaining portion covers the cold head 252 of the stirling cooler, and the second heat-retaining portion covers the first end of the heat pipe 261. The first heat preservation portion and the second heat preservation portion are semi-closed cavities, and one surfaces facing each other are provided with butt joint windows, so that the first end of the heat pipe 261 can be in butt joint with the cold head 252 of the Stirling refrigerator. When the first end of the heat pipe 261 is embedded in the butt-joint groove, the first heat preservation portion is in butt joint with the second heat preservation portion, and the two semi-closed cavities are combined to form a closed heat preservation space. The cold head 252 of the stirling cooler and the first end of the heat pipe 261 are both located within the insulated space. Therefore, the first heat preservation part and the second heat preservation part isolate the influence of the heat generated by the operation of the Stirling refrigerator 250 on the refrigeration of the refrigerator, and further improve the refrigeration efficiency of the refrigerator. In addition, the first heat preservation portion and the second heat preservation portion are in butt joint, so that the cold head 252 of the Stirling refrigerator and the first end of the heat pipe 261 can still be quickly connected and quickly detached, the Stirling refrigerator 250 of the refrigerator can be conveniently disassembled and assembled, and the maintenance difficulty of the refrigerator is reduced.

Optionally, the refrigerating space 210 is provided with an operation hole 217 corresponding to the cold head 252 of the Stirling refrigerator; the refrigerator further comprises a baffle 218 which is arranged in the operation hole 217 in an openable and closable manner.

The opening 215 is opened on the first side wall, and the operation hole 217 is opened on the fourth side wall opposite to the first side wall. That is, the first sidewall corresponds to the compression chamber 251 of the Stirling cooler 250 and the fourth sidewall corresponds to the cold head 252 of the Stirling cooler. An operation hole 217 is formed, and the Stirling refrigerator 250 can be observed and maintained through the operation hole 217. The operation hole 217 corresponds to the cold head 252 of the stirling cooler, and the connection between the cold head 252 of the stirling cooler and the first end of the heat pipe 261 can be disconnected through the operation hole 217. In addition, if the first and second heat-insulating portions are not butted in place, a simple adjustment can be made through the operation hole 217. The blocking plate 218 may block the operation hole 217 to prevent foreign objects from entering the refrigerating space 210.

Optionally, the refrigerator further includes a third heat preservation portion, and the third heat preservation portion is wound around a butt joint position of the first heat preservation portion and the second heat preservation portion.

The third heat-insulating portion is provided to improve the sealing property before heat insulation, and further, to prevent the cold head 252 of the stirling refrigerator from exchanging heat with the refrigerating space 210. Optionally, the third insulating portion is a flexible insulating material. In this way, after the cold head 252 of the stirling cooler is butted against the first end of the heat pipe 261, multiple layers of insulation material may be wound around the outer circumference of the first end of the heat pipe 261 of the cold head 252 of the stirling cooler through the operation hole 217. Similarly, when it is desired to disconnect the cold head 252 of the stirling cooler from the first end of the heat pipe 261, the insulation is released through the access hole 217.

Optionally, the refrigerator further comprises a flange 280 bolted to the cold head 252 of the stirling cooler, and the first end of the heat pipe 261 is located between the flange 280 and the cold head 252 of the stirling cooler.

The flange 280 is simple to assemble and disassemble, and the flange 280 can be arranged to press the first end of the heat pipe 261 into the butt joint groove of the cold head 252 of the Stirling refrigerator 250, so that the contact area between the heat pipe 261 and the cold head 252 of the Stirling refrigerator is increased, and further, the heat conduction effect of the heat pipe 261 is improved. The flange 280 can prevent the first end of the heat pipe 261 from falling out of the butt groove under the vibration of the Stirling refrigerator 250, and the operational reliability of the refrigerator is improved. The flange 280 can be conveniently disassembled and assembled through the operation hole 217. In the case where the flange 280 is provided, the refrigerator is provided with only the third insulating portion to facilitate attachment and detachment of the stirling cooler 250.

Optionally, the heat pipe 261 is a gravity heat pipe and the refrigerated space 210 is located above the refrigerated space 220.

The refrigerating space 210 is located above the refrigerating space 220, and the heat pipe 261 is vertically arranged, so that gas-liquid separation of refrigerants in the heat pipe 261 under the action of gravity is facilitated, and a heat conduction effect is better played. The heat pipe 261 is the gravity heat pipe, the liquid refrigerant in the heat pipe 261 flows to cold-stored space 220 under the action of gravity, it becomes gaseous refrigerant to absorb heat at cold-stored space 220 and evaporate, gaseous refrigerant upward movement gets into the first end of heat pipe 261 under the effect of density difference, with the condensation of stirling refrigerator's cold head 252 heat transfer back for liquid refrigerant, then flow to cold-stored space 220 under the action of gravity, so reciprocating cycle, the latent heat of phase transition that carries when utilizing self phase transition takes away the heat of cold-stored space 220, thereby realize the cooling to cold-stored space 220. With such an arrangement, the refrigerant circulation in the heat pipe 261 is relatively efficient, and the heat conductivity of the heat pipe 261 is relatively high.

Optionally, the heat pipe 261 is a pulsating heat pipe.

The pulsating heat pipe has a small pipe diameter, and is filled with a refrigerant, and the refrigerant forms liquid columns and air plugs with different lengths in the pipe under the action of surface tension. At the evaporation end, the working medium absorbs heat to generate bubbles, and the bubbles expand and boost rapidly to push the working medium to flow to the low-temperature condensation end. The bubbles are cooled, contracted and broken at the condensation end, the pressure is reduced, and due to the pressure difference between the two ends and the imbalance of the pressure between the adjacent pipe sections, the working medium flows between the evaporation end and the condensation end in an oscillating way, so that the heat transfer is realized. Compared with the traditional heat pipe 261, the pulsating heat pipe has the advantages of simple structure, low cost and small volume; and can be bent more freely. The pulsating heat pipe has small influence on the heat transfer due to gravity, the heat pipe 261 is a pulsating heat pipe, and the relative position of the refrigerating space 210 of the refrigerating space 220 can be set at will, so that the design of the refrigerator is facilitated.

The above description and the drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A refrigerator, characterized by comprising:

a housing configured with an accommodating space;

the partition board divides the accommodating space into a refrigerating space and a cold storage space, and the refrigerating space is provided with an opening;

the sliding track is arranged on the inner wall of the refrigerating space, and the sliding direction of the sliding track faces towards the opening;

the fixed bracket is arranged on the sliding track in a sliding manner;

a Stirling refrigerator fixed to the fixing bracket to slide together with the fixing bracket, the Stirling refrigerator being slidable between a first position pushed out of the refrigerating space and a second position pushed back into the refrigerating space;

and the heat conduction device is used for transferring the cold energy generated by the Stirling refrigerator to the refrigerating space.

2. The refrigerator according to claim 1,

the opening is formed in the first side wall of the refrigerating space, and the sliding rail is transversely arranged.

3. The refrigerator according to claim 2,

air intake and air outlet have been seted up to the refrigeration space, the refrigerator still includes:

and the fan is arranged in the refrigerating space and used for driving air to flow from the air inlet to the air outlet.

4. The refrigerator of claim 2, wherein the sliding rail comprises:

a first track disposed on a second sidewall of the refrigerated space, the second sidewall adjacent the first sidewall;

and the second rail is arranged on a third side wall of the refrigerating space, and the third side wall is opposite to the second side wall.

5. The refrigerator of claim 4, wherein the fixing bracket comprises:

the first fixing arm is arranged on the first track in a sliding mode;

the second fixing arm is arranged on the second track in a sliding mode;

wherein the stirling refrigerator is fixed to the first fixing arm and the second fixing arm.

6. The refrigerator of claim 5, wherein the fixing bracket further comprises:

the cover plate is fixed at the front ends of the first fixing arm and the second fixing arm and used for plugging and opening the opening.

7. The refrigerator according to any one of claims 1 to 6,

the cold head of the Stirling refrigerator is provided with a butt joint groove;

the heat conducting device includes:

the heat pipe penetrates through the partition plate, the first end of the heat pipe is positioned in the refrigerating space, and the second end of the heat pipe is positioned in the refrigerating space;

when the Stirling refrigerator is located at the second position, the first end of the heat pipe is embedded into the butt joint groove; when the Stirling refrigerator moves from the second position to the first position, the first end of the heat pipe is separated from the butt groove.

8. The refrigerator according to claim 7,

the butt joint groove is a spiral line-shaped groove, and the shape of the first end of the heat pipe corresponds to that of the spiral line-shaped groove.

9. The refrigerator according to claim 7,

the butt joint groove is a U-shaped groove, and the shape of the first end of the heat pipe corresponds to that of the U-shaped groove.

10. The refrigerator according to claim 9,

the cold head of the Stirling refrigerator is provided with a plurality of U-shaped grooves, and the heat conducting device comprises a plurality of heat pipes.

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