CN116951817A - Spindle-shaped low-temperature precooling device and refrigerator - Google Patents
Spindle-shaped low-temperature precooling device and refrigerator Download PDFInfo
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- CN116951817A CN116951817A CN202310774567.3A CN202310774567A CN116951817A CN 116951817 A CN116951817 A CN 116951817A CN 202310774567 A CN202310774567 A CN 202310774567A CN 116951817 A CN116951817 A CN 116951817A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
- F25D19/04—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors with more than one refrigeration unit
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Abstract
本申请涉及制冷设备技术领域，公开了一种纺锤形低温预冷装置以及制冷机，包括：驱动组件和第一纺锤形传导件，第一纺锤形传导件连接在驱动组件上，并通过驱动组件的驱动而沿预设方向移动；以及沿预设方向依次并排设置的第一冷源温区件、第一实验冷板、第二冷源温区件，第一冷源温区件与第二冷源温区件具有不同的预冷温度；第一纺锤形传导件通过移动具有上接触状态和下接触状态；当上接触状态时，第一纺锤形传导件与第一冷源温区件和第一实验冷板相连接，并进行冷量传导；当下接触状态时，第一纺锤形传导件与第二冷源温区件和第一实验冷板相连接，并进行冷量传导。解决现有技术中的采用多个预定开关的操作过程繁琐、降低了降温和实验的效率的问题。
This application relates to the technical field of refrigeration equipment. It discloses a spindle-shaped low-temperature precooling device and a refrigerator, which include: a driving assembly and a first spindle-shaped conductive member. The first spindle-shaped conductive member is connected to the drive assembly and passes through the drive assembly. driven to move in the preset direction; and the first cold source temperature zone component, the first experimental cold plate, the second cold source temperature zone component, the first cold source temperature zone component and the second cold source temperature zone component, which are arranged side by side in the preset direction. The cold source temperature zone member has different precooling temperatures; the first spindle-shaped conductive member has an upper contact state and a lower contact state by moving; when in the upper contact state, the first spindle-shaped conductor and the first cold source temperature zone member and The first experimental cold plate is connected to conduct cold energy transmission; in the lower contact state, the first spindle-shaped conductive member is connected to the second cold source temperature zone member and the first experimental cold plate to conduct cold energy conduction. This solves the problem in the prior art that the operation process of using multiple predetermined switches is cumbersome and reduces the efficiency of cooling and experiments.
Description
Technical Field
The application relates to the technical field of refrigeration, in particular to a spindle-shaped low-temperature precooling device and a refrigerator.
Background
The start-up or use of cryogenic devices and systems starts from room temperature, which faces the problem that cryogenic devices drop from 300K to temperatures below 1K and even down to several milli-K, which is a problem that requires a lot of time and energy to solve (sometimes cooling takes even more than a week). In order to solve the problems, the existing method similar to a switch is to make the initial low-temperature cold source contact with all cold plates or devices needing to be cooled when the initial low-temperature cold source begins to be precooled, and separate the cold plates from the initial cold source when the temperature of each cold plate is reduced to be almost the same as that of the initial low-temperature cold source, and then continuously cooling down. Therefore, after the precooling process, the rapid cooling of the cold plate or the device can be realized, and the purposes of saving cooling time and energy are achieved.
In the process of precooling the cold plate or the device, a precooling switch is generally adopted to connect or disconnect the cold plate and the initial low-temperature cold source. Usually, the precooling switch acts in a single direction, for example, pushing down the precooling switch is that all cold plates needing precooling are in a connection state; when the precooling switch moves up to a certain distance, the cooling plates can be in a disconnected state without precooling. The precooling switch has various forms, but a mechanical precooling switch is adopted in common practice, but in a common low-temperature system, the initial cold source is usually two or more than two, such as a cold head in a frequently used dry refrigeration system, and the initial cold source has two initial cold source temperatures of 50K and 4K. Thus, it is required to provide two or more pre-cooling switches, wherein the pre-cooling process is completed by contacting a pre-set switch-controlled cold plate with a 50K temperature initial cold source and then contacting another pre-cooling switch-controlled cold plate with a 4K temperature initial cold source. The vacuum cavity is required to be opened again by switching control among different preset switches, so that the operation is complicated, time and energy are wasted, and the cooling and experiment efficiency is reduced.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a spindle-shaped low-temperature precooling device and a refrigerator, which solve the problems of complicated operation process and reduced cooling and experiment efficiency of the prior art adopting a plurality of preset switches.
The technical scheme of the application is as follows:
in one aspect, the present application provides a spindle-shaped cryogenic precooling apparatus, comprising: the driving assembly and the first spindle-shaped conducting piece are connected to the driving assembly and move along a preset direction through the driving of the driving assembly;
the first cold source temperature area piece, the first experiment cold plate and the second cold source temperature area piece are sequentially arranged side by side along the preset direction, and the first cold source temperature area piece and the second cold source temperature area piece have different precooling temperatures;
the first spindle-shaped conductive member has an upper contact state and a lower contact state by moving;
when the upper contact state is adopted, the first spindle-shaped conducting piece is connected with the first cold source temperature area piece and the first experiment cold plate, and cold energy conduction is carried out;
and in the lower contact state, the first spindle-shaped conduction piece is connected with the second cold source temperature area piece and the first experiment cold plate, and conducts cold energy.
Optionally, the first spindle-shaped conductive element comprises: the main body conduction part is connected with the first experiment cold plate and conducts cold energy;
the upper contact part is fixedly arranged at one end of the main body conducting part and is conical;
the lower contact part is fixedly arranged at the other end of the main body conducting part and is conical;
the first cold source temperature area piece is provided with a first pair of interfaces, the first pair of interfaces are conical, the second cold source temperature area piece is provided with a second pair of interfaces, and the second pair of interfaces are conical;
the upper contact is embedded in the first pair of interfaces or the lower contact is embedded in the second pair of interfaces by movement of the body conductive portion.
Optionally, a heat conduction piece is connected to the first experiment cold plate, and one end of the heat conduction piece is abutted to the main body conduction part; the heat conduction piece is a heat conduction copper rope.
Optionally, the first cold source temperature section includes: the driving component penetrates through the first cold source temperature zone plate and is connected with the first spindle-shaped conducting piece;
the first contact disc is movably arranged on one side of the first cold source temperature zone plate facing the first spindle-shaped conducting piece, and the first butt joint opening is formed in the surface of the first contact disc facing the first spindle-shaped conducting piece;
and the upper heat conduction piece is connected with the first cold source temperature zone plate and the first contact plate.
Optionally, a first buffer elastic element is arranged between the first contact disc and the first cold source temperature zone plate.
Optionally, a sealing cover is arranged on the first cold source temperature zone plate, and the driving assembly penetrates through the sealing cover;
the first contact plate is movably connected to the sealing cover.
Optionally, the second cold source temperature zone comprises: the second cold source temperature zone plate is positioned at one side of the first spindle-shaped conducting piece, which is away from the first cold source temperature zone plate;
the second contact disc is movably arranged on one side of the second cold source temperature zone plate facing the first spindle-shaped conducting piece, and the second butt joint opening is formed in the surface of the second contact disc facing the first spindle-shaped conducting piece;
the lower heat conduction piece is connected with the second cold source temperature zone plate and the second contact disc;
the second buffer elastic piece is connected between the second contact disc and the second cold source temperature zone plate.
Optionally, the drive assembly comprises: the displacement driver is arranged on one side of the first cold source temperature area part, which is away from the second cold source temperature area part;
the displacement control rod is connected to the displacement driver and moves back and forth along a preset direction through the driving of the displacement driver;
the displacement control rod penetrates through the first cold source temperature area part, and the first spindle-shaped conducting part is connected to the displacement control rod.
Optionally, the spindle-shaped cryogenic precooling apparatus further comprises: the third contact disc is movably arranged on one side of the second cold source temperature zone plate, which is away from the first cold source temperature zone plate, through a third buffer elastic piece, and the third contact disc is in cold conduction connection with the second cold source temperature zone plate through a third heat conduction piece;
the second experiment cold plate is arranged on one side of the third contact disc, which is away from the second cold source temperature zone plate;
the thermal contact funnel is positioned at one side of the second experiment cold plate, which is away from the second cold source temperature zone plate;
the drive assembly further includes: the second spindle-shaped conducting piece is connected to the first spindle-shaped conducting piece through a penetrating rod and is movably abutted with the second experiment cold plate;
the second spindle-shaped conductive piece is abutted into the thermal contact funnel by the driving of the driving assembly;
the second cold source temperature area component, the third contact disc, the third buffer elastic component, the second experiment cold plate and the second spindle-shaped conduction component form a temperature area component, the temperature area component is provided with a plurality of, the plurality of temperature area components are sequentially arranged along the preset direction, and the thermal contact funnel is positioned at one side of the second spindle-shaped conduction component at the lowest layer.
In another aspect, the present application also provides a refrigerator, including: the main frame of the refrigerator and the spindle-shaped low-temperature precooling device are arranged on the main frame of the refrigerator.
The beneficial effects are that: compared with the prior art, the spindle-shaped low-temperature precooling device and the refrigerator provided by the application have the advantages that when the spindle-shaped low-temperature precooling device works, the first spindle-shaped conducting piece is positioned at the neutral position in the initial state, and different cold source temperature areas are contacted. When driven by the driving component, the first spindle-shaped conductive piece can move up and down, and an upper contact state and a lower contact state are respectively formed. When the first spindle-shaped conducting piece moves upwards, the upper end of the first spindle-shaped conducting piece is connected with the first cold source temperature area piece, the first spindle-shaped conducting piece is still connected with the first experiment cold plate in the moving process, cold energy is conducted through the first spindle-shaped conducting piece, and cold energy on the first cold source temperature area piece is conducted to the first experiment cold plate, so that the temperature of the first experiment cold plate can be reduced to the temperature of the first cold source temperature area piece approximately. Also, when the first spindle-shaped conductive member moves down from the neutral position, the lower end of the first spindle-shaped conductive member is connected to the second cold source temperature zone member, and the first spindle-shaped conductive member is still connected to the first cold source temperature zone member during movement, cold energy is conducted through the first spindle-shaped conductive member, and cold energy on the second cold source temperature zone member is conducted to the first cold source temperature zone member, which means that the temperature of the first cold source temperature zone member can be reduced to about the temperature of the second cold source temperature zone member. Thus, the function of combining and disconnecting the two initial temperature areas is realized by using a spindle-shaped low-temperature precooling device. The spindle-shaped low-temperature precooling device is more convenient and flexible to operate, greatly reduces precooling time and shortens working time of an external power source; the multi-temperature-zone precooling of one precooling switch does not need to open the vacuum cavity again in the process of carrying out the precooling step by step for many times, thereby accelerating the progress of cooling and experiments, saving time and energy sources and having high economic benefit and use value.
Drawings
Fig. 1 is a schematic structural diagram of a spindle-shaped low-temperature precooling apparatus according to an embodiment of the present application;
fig. 2 is a cross-sectional view of a spindle-shaped cryogenic precooling apparatus in an upper contact state according to an embodiment of the present application;
fig. 3 is a cross-sectional view of a spindle-shaped cryogenic precooling apparatus in a lower contact state according to an embodiment of the application.
The reference numerals in the drawings: 100. a drive assembly; 110. a displacement driver; 120. a displacement control lever; 121. a penetrating rod; 200. a first spindle-shaped conductive member; 210. a main body conduction part; 220. an upper contact portion; 230. a lower contact portion; 300. a first cold source temperature zone; 310. a first cold source temperature zone plate; 311. a sealing cover; 320. a first contact pad; 321. an upper heat conduction member; 330. a first buffer elastic member; 400. a first experimental cold plate; 410. a heat conductive member; 500. a second cold source temperature zone; 510. a second cold source temperature zone plate; 520. a second contact pad; 521. a lower heat conduction member; 530. a second buffer elastic member; 540. a third contact pad; 541. a third heat conduction member; 550. a third buffer elastic member; 600. a second experimental cold plate; 700. a second spindle-shaped conductive member; 800. and thermally contacting the funnel.
Detailed Description
The application provides a spindle-shaped low-temperature precooling device and a refrigerator, which are used for making the purposes, technical schemes and effects of the application clearer and more definite, and the application is optionally described in detail below by referring to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Example 1
As shown in fig. 1, the present embodiment provides a spindle-shaped low-temperature precooling apparatus for use in a refrigerator, so that each experimental cold plate can be precooled in at least two temperature areas. The spindle-shaped low-temperature precooling device mainly comprises: the driving assembly 100 (the driving assembly may include the displacement driver 110 and the displacement lever 120), the first spindle-shaped conductive member 200, the first cold source warm zone member 300 (the first cold source warm zone member may include the first cold source warm zone plate 310, the first contact plate 320, the upper heat conductive member 321, and the first buffer elastic member 330), the first experiment cold plate 400, and the second cold source warm zone member 500 (the second cold source warm zone member may include the second cold source warm zone plate 510, the second contact plate 520, the lower heat conductive member 521, and the second buffer elastic member 530). The driving assembly 100 generates power in the case of being started, and the first spindle-shaped conductive member 200 is connected to the driving assembly 100 and is moved in a preset direction by the driving of the driving assembly 100, and for convenience of structural description, the preset direction in this embodiment is an up-down direction, it is easy to think that if the refrigerator is of a horizontal type structure, the preset direction may also be a horizontal direction, etc. The first cold source temperature zone 300, the first experimental cold plate 400, and the second cold source temperature zone 500 are sequentially arranged side by side in the up-down direction. The first cold source temperature zone 300 is above the first experiment cold plate 400, the second cold source temperature zone 500 is below the first experiment cold plate 400, and an experiment sample can be placed on the first experiment cold plate 400 to perform a bottom temperature or ultra-low temperature experiment. The first cold source temperature zone 300 and the second cold source temperature zone 500 have different pre-cooling temperatures, and specifically, the temperature of the first cold source temperature zone 300 may be 50K and the temperature of the second cold source temperature zone 500 may be 4K. By moving the first spindle-shaped conductive element 200 to different positions, there are at least three states, respectively: an initial state (as shown in fig. 1), an upper contact state (as shown in fig. 2), and a lower contact state (as shown in fig. 3). As shown in fig. 1, in the initial state, the first spindle-shaped conductive member 200 is located at the middle position, and the middle portion of the first spindle-shaped conductive member 200 is connected to the first experimental cold plate 400 and performs cold energy conduction, while the upper and lower ends of the first spindle-shaped conductive member 200 are not in contact with the first cold source temperature zone 300 and the second cold source temperature zone 500. As shown in fig. 2, when the first spindle-shaped conductive member 200 moves upward to form an upper contact state, the first spindle-shaped conductive member 200 is connected to the first cold source temperature zone 300 and the first experimental cold plate 400 and performs cold energy conduction when in the upper contact state. As shown in fig. 3, a lower contact state is formed when the first spindle-shaped conductive member 200 moves downward; in the lower contact state, the first spindle-shaped conductive member 200 is connected to the second cold source temperature zone member 500 and the first experimental cold plate 400, and performs cold energy conduction.
As shown in fig. 1, 2 and 3, in the solution of the present embodiment, when the spindle-shaped cryogenic precooling apparatus is in operation, in the initial state, the first spindle-shaped conductive element 200 is in the neutral position, and any cold source temperature components are in contact. The first spindle-shaped conductive member 200 can be moved up and down and respectively brought into an upper contact state and a lower contact state when driven by the driving assembly 100. When the first spindle-shaped conductive member 200 moves upward, the upper end of the first spindle-shaped conductive member 200 is connected to the first cold source temperature zone member 300, and the first spindle-shaped conductive member 200 is still connected to the first experiment cold plate 400 during the movement, the cold energy on the first cold source temperature zone member 300 is conducted to the first experiment cold plate 400 through the cold energy conduction of the first spindle-shaped conductive member 200, which means that the temperature of the first experiment cold plate 400 can be reduced to about the temperature of the first cold source temperature zone member 300. Also, when the first spindle-shaped conductive member 200 moves downward from the neutral position, the lower end of the first spindle-shaped conductive member 200 is connected to the second cold source temperature zone member 500, and the first spindle-shaped conductive member 200 is still connected to the first cold source temperature zone member 400 during movement, the cooling capacity is conducted through the first spindle-shaped conductive member 200, and the cooling capacity on the second cold source temperature zone member 500 is conducted to the first cold source temperature zone member 400, so that the temperature of the first cold source temperature zone member 400 can be reduced to about the temperature of the second cold source temperature zone member 500. Therefore, the spindle-shaped low-temperature precooling device realizes the function of combining and disconnecting two initial temperature areas, so that the first experiment cold plate 400 can perform experiments in two different temperature areas. The spindle-shaped low-temperature precooling device is more convenient and flexible to operate, greatly reduces precooling time and shortens working time of an external power source; the multi-temperature-zone precooling of one precooling switch does not need to open the vacuum cavity again in the process of carrying out the precooling step by step for many times, thereby accelerating the progress of cooling and experiments, saving time and energy sources and having high economic benefit and use value.
As shown in fig. 1, further, the first spindle-shaped conductive member 200 specifically includes: a body conductive portion 210, an upper contact portion 220, and a lower contact portion 230. The main body conduction part 210, the upper contact part 220 and the lower contact part 230 are integrally formed in an up-down direction, the main body conduction part 210 is connected with the first experiment cold plate 400 to conduct cold, and the upper contact part 220 is fixedly arranged at the upper end of the main body conduction part 210 and is tapered; the lower contact part 230 is fixedly provided at the lower end of the body conductive part 210 and tapered to form a shape having both ends thin, middle and the like thick. It is readily contemplated that other shapes may be employed with the middle being thicker and the ends being thinner, such as triangular or circular arcs at the ends. The driving assembly 100 penetrates the first cold source temperature section 300 in the up-down direction and is then connected to the upper contact part 220, and the main body conduction part 210, the upper contact part 220 and the lower contact part 230 are moved up-down simultaneously by the driving of the driving assembly 100. The first cold source temperature section 300 has a first pair of interfaces opened downward, the first pair of interfaces being tapered, and the second cold source temperature section 500 has a second pair of interfaces opened upward, the second pair of interfaces being tapered. The upper contact 220 is embedded within the first pair of interfaces or the lower contact 230 is embedded within the second pair of interfaces by movement of the body conductive portion 210. The first and second conical interfaces are adopted to make the interfaces horn-shaped and match with the upper and lower cone angles of the first spindle-shaped conductive piece 200, so that the upper contact part 220 and the lower contact part 230 can be well in close contact with the respective cold plates, and the contact area is as large as possible in a conical contact mode, and the efficiency in the cold conduction process is high.
Further, as shown in fig. 1, a heat conductive member 410 is connected to the first experimental cold plate 400, and one end of the heat conductive member 410 is connected to the first spindle-shaped conductive member 200. The thermally conductive member 410 may be a thermally conductive copper strand, such as a copper-guided thermal rope. One end of the heat conductive copper string is connected to the first experimental cold plate 400, and the other end is connected to the body conductive part 210, which does not affect the moving process of the first spindle-shaped conductive member 200 because the heat conductive copper string has deformability. The heat conduction copper rope has good heat conduction performance, and is convenient to use in a bottom temperature environment.
It is easy to think that the heat conductive piece 410 may also use a heat conductive copper sheet, for example, one end of the heat conductive copper sheet is fixed on the first experiment cold plate 400, and the other end of the heat conductive copper sheet is elastically abutted against the main body conductive portion 210, and can be contacted with the surface of the main body conductive portion 210 to conduct cold through elasticity, so that the moving process of the main body conductive portion 210 is not affected.
Further, as shown in fig. 1, the first cold source temperature section 300 may include various structures, for example, the first cold source temperature section 300 may include only the first cold source temperature section plate 310, and the first interface is opened on the first cold source temperature section 300. The first cold source temperature zone 300 of this embodiment specifically includes: the driving assembly 100 penetrates through the first cold source temperature zone plate 310 and is connected with the first spindle-shaped conductive piece 200, the first contact plate 320 is movably arranged on the lower side of the first cold source temperature zone plate 310, the first butt joint opening is formed on the lower surface of the first contact plate 320, and the driving assembly 100 penetrates through and extends into the first butt joint opening and is connected to the upper contact part 220 below. The upper heat conductive member 321 connects the first cold source temperature zone plate 310 and the first contact plate 320 using a heat conductive copper string. The movable arrangement of the first contact plate 320 may be a gravity return or elastic return structure, so that when the upper contact portion 220 and the first contact plate 320 engaged with the upper contact portion are abutted against each other, a displacement can be further performed, and thus the upper contact portion 220 can be in closer contact with the first pair of interfaces, the cold conducting performance and efficiency are improved, and the subsequent spindle-shaped conductive members are subjected to dimensional fault tolerance, and even if the dimensions deviate slightly, the upper contact portion 220 and the first contact plate 320 can be firmly engaged with the corresponding contact plates under the driving of the driving assembly 100.
As shown in fig. 1, further, a first buffer elastic member 330 is provided between the first contact pad 320 and the first cold source temperature zone plate 310. The first buffer elastic member 330 may be a spring, and after the first cold source temperature area member 300 contacts with the first spindle-shaped conductive member 200, the first contact plate 320 is connected with the first cold source temperature area plate 310 by a strong spring, so that under the action of the first buffer elastic member 330, the first contact plate 320 is pushed to the first spindle-shaped conductive member 200 to realize firm connection, and meanwhile, the first contact plate 320 can be thermally connected with the first cold source temperature area plate 310 by the copper heat conduction soft rope. The contact surface area is large, and the heat conduction effect is very good due to the large positive pressure generated under the elastic action.
Further, as shown in fig. 1, a sealing cover 311 is disposed on the first cold source temperature zone plate 310, the driving assembly 100 penetrates through the sealing cover 311, and the first contact plate 320 is movably connected to the sealing cover 311. The sealing cap 311 may be configured to facilitate installation of the drive assembly 100 and the first spindle-shaped conductive member 200.
As shown in fig. 1, further, the second cold source temperature section 500 includes: the second cold source temperature zone plate 510, the second contact plate 520, the lower heat conductive member 521, and the second buffer elastic member 530. The second cold source temperature zone plate 510 is located below the first spindle-shaped conductive member 200, the second contact plate 520 is movably disposed at an upper side of the second cold source temperature zone plate 510 by the action of the second buffer elastic member 530, the second butt joint opening is formed on an upper surface of the second contact plate 520, the lower heat conductive member 521 adopts a heat conductive copper rope and connects the second cold source temperature zone plate 510 and the second contact plate 520, and the second buffer elastic member 530 is connected between the second contact plate 520 and the second cold source temperature zone plate 510. When the first spindle-shaped conductive member 200 is pressed down and is in butt joint with the second contact plate 520, the second contact plate 520 can be pushed up by the pushing force of the second buffer elastic member 530, so that the contact surface area of the second pair of interfaces with the lower contact portion 230 of the first spindle-shaped conductive member 200 is large, and the heat conduction effect is good due to the large positive pressure generated under the elastic action. And after the first spindle-shaped conductive member 200 moves away, the second contact pad 520 can be reset under the pushing force of the second buffer elastic member 530, thereby realizing a reset function.
As shown in fig. 1, 2 and 3, the driving assembly 100 in this embodiment specifically includes: the displacement actuator 110 and the displacement control lever 120. The displacement driver 110 is disposed at the upper side of the first cold source temperature zone member 300, and the displacement driver 110 may be an electric push cylinder; the displacement lever 120 is connected to the displacement driver 110 and moves back and forth in the up-down direction by the driving of the displacement driver 110. The displacement control rod 120 penetrates the first cold source temperature zone member 300, and the first spindle-shaped conductive member 200 may be coupled to the displacement control rod 120 by screw-coupling. Automatic control can be achieved by the drive assembly 100, and automated lifting and lowering of the first spindle-shaped conductive member 200 can be achieved.
As shown in fig. 1, fig. 2, and fig. 3, further, in this embodiment, the multi-layer cold plate is capable of being pre-cooled by contact, and taking 2-layer cold plates as an example, the spindle-shaped low-temperature pre-cooling device further includes: a third contact plate 540, a second experimental cold plate 600 and a thermal contact funnel 800. The third contact plate 540 is movably arranged on one side of the second cold source temperature zone plate 510, which is far away from the first cold source temperature zone plate 310, through the third buffer elastic piece 550, the third contact plate 540 is in cold conduction connection with the second cold source temperature zone plate 510 through the third heat conduction piece 541, the third heat conduction piece 541 adopts a heat conduction copper rope, and the second experiment cold plate 600 is arranged below the third contact plate 540. The thermal contact funnel 800 is located below the second experimental cold plate 600. The drive assembly 100 further includes: and a second spindle-shaped conductive member 700, the second spindle-shaped conductive member 700 being connected to the first spindle-shaped conductive member 200 through the penetration rod 121, the second spindle-shaped conductive member 700 being connected to the second experiment cold plate 600 through a heat conductive copper wire, thereby allowing cold energy conduction between the second spindle-shaped conductive member 700 and the second experiment cold plate 600. The second spindle-shaped conductive member 700 has two states by the driving of the driving unit 100, namely, a state of abutting against and connecting with the third contact plate 540 or a state of abutting into the thermal contact funnel 800. By driving the driving unit 100, the first and second spindle conductors 200 and 700 are moved up or down synchronously, and when moving up, the first spindle conductor 200 contacts the first contact plate 320 and transfers the cold to the first experiment cold plate 400, thereby pre-cooling the first experiment cold plate 400, and simultaneously the second spindle conductor 700 contacts the third contact plate 540 and transfers the cold on the second cold source temperature zone plate 510 to the second experiment cold plate 600, thereby pre-cooling the second experiment cold plate 600, so that the synchronous pre-cooling of the first experiment cold plate 400 and the second experiment cold plate 600 can be realized. When the first spindle-shaped conductive member 200 moves downward, it contacts the second contact plate 520 and transfers the cold to the first experiment cold plate 400, thereby further pre-cooling the first experiment cold plate 400, and at the same time, the second spindle-shaped conductive member 700 contacts the thermal contact funnel 800, so that the second experiment cold plate 600 can maintain the original pre-cooling temperature. By adopting the structure mode, the multi-layer cold plate can be synchronously precooled, so that the experimental efficiency is improved.
As shown in fig. 1, 2 and 3, further, based on the structure of pre-cooling the 2 layers of cold plates, in order to realize the pre-cooling process of more layers of cold plates, in this embodiment, the second cold source temperature zone 500, the third contact plate 540, the third buffer elastic member 550, the second experiment cold plate 600 and the second spindle-shaped conductive member 700 form a temperature zone assembly, and the temperature zone assembly is provided with a plurality of temperature zone assemblies, and the plurality of temperature zone assemblies are sequentially arranged along a preset direction. Namely, the second cold source temperature zone 500 of the next layer, the third contact plate 540 of the next layer and the third buffer elastic piece 550 of the next layer are arranged below the original second experiment cold plate 600, the second experiment cold plate 600 of the next layer is arranged below the second cold source temperature zone 500 of the next layer, the second spindle-shaped conducting piece 700 of the next layer is connected below the original second spindle-shaped conducting piece 700 through the penetrating rod 121, the second spindle-shaped conducting piece 700 of the next layer and the second experiment cold plate 600 of the next layer are connected in a cold conducting manner through the third heat conducting piece 541 of the next layer, and thus, the arrangement of the temperature zone assembly of the next layer is formed, a plurality of temperature zone assemblies are sequentially arranged along the downward direction, so that the cooling plate precooling function of more layers can be realized, and the synchronous precooling of the plurality of temperature zone assemblies can be realized through one-time driving of the driving assembly 100. When a plurality of temperature zone assemblies are provided, the thermal contact funnel 800 is located on the underside of the lowermost second spindle-shaped conductive member 700.
Therefore, when the precooling switch formed by the spindle-shaped low-temperature precooling apparatus is simultaneously contacted with multiple layers of cold plates, not only the contact effect of the first spindle-shaped conduction element 200 and the first cold source temperature zone element 300 is good, but also the conduction heat effect is good, and then when other temperature zone elements are contacted, the cold plates of the uppermost layer of the first cold source temperature zone element 300 are rigidly contacted, so that the problem of limiting good contact of the cold plates in the lower layer of temperature zone elements is caused. The application adopts unique multi-stage buffer springs, copper soft conductive ropes and other parts in the structure of each cold plate, and can well solve the problems. By adopting the contact plate with the spring structure, after the first cold source temperature zone plate 310 contacts with the first spindle-shaped conductive member 200, the first contact plate 320 is connected with the first cold source temperature zone plate 310 by the strong spring and the copper heat conduction soft rope, although the first spindle-shaped conductive member 200 is firmly contacted with the first contact plate 320, and meanwhile, the first cold source temperature zone plate 310 and the first spindle-shaped conductive member 200 can be thermally connected by the copper heat conduction soft rope. However, due to the presence of the buffer spring, the first spindle-shaped conductive member 200 and the first contact pad 320 engaged therewith can continue to be displaced a little, so that the second spindle-shaped conductive member 700 and the third contact pad 540 in the respective temperature zone components below on the pre-cooling switch can be firmly engaged together, and so on. So that synchronous control of the plurality of spindle-shaped conductors can be achieved to pre-cool the first experimental cold plate 400 and the second experimental cold plate 600 in the plurality of temperature zone assemblies.
Example two
The present embodiment proposes a refrigerator, including: the main frame of the refrigerator and the spindle-shaped low-temperature precooling device are arranged on the main frame of the refrigerator.
In summary, the spindle-shaped low-temperature precooling device and the refrigerator provided by the application design a precooling switch by utilizing the appearance characteristics of thin two ends and thick middle of the spindle-shaped conducting piece, and break a precooling mode which is only one-way on or off. When the precooling switch is in the middle (neutral) position, the precooling is disconnected, and when the precooling switch moves upwards and touches the first cold source temperature area (50K initial temperature source), the precooling switch is in a working state of 50K initial precooling. Also, when the second cold source temperature zone (4K initial temperature source) is contacted by moving from the middle to the bottom, the 4K precooling process is formed. The spindle-shaped low-temperature precooling device is more convenient and flexible to operate, greatly reduces precooling time and shortens working time of an external power source; the multi-temperature-zone precooling of one precooling switch does not need to open the vacuum cavity again in the process of carrying out the precooling step by step for many times, thereby accelerating the progress of cooling and experiments, saving time and energy sources and having high economic benefit and use value.
It is to be understood that the application is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (10)
1. A spindle-shaped cryogenic precooling apparatus, comprising: the driving assembly and the first spindle-shaped conducting piece are connected to the driving assembly and driven by the driving assembly to move along a preset direction;
the first cold source temperature area piece, the first experiment cold plate and the second cold source temperature area piece are sequentially arranged side by side along the preset direction, and the first cold source temperature area piece and the second cold source temperature area piece have different precooling temperatures;
the first spindle-shaped conductive member has an upper contact state and a lower contact state by moving;
when in an upper contact state, the first spindle-shaped conduction piece is connected with the first cold source temperature area piece and the first experiment cold plate and conducts cold energy;
and when the first spindle-shaped conduction piece is in a lower contact state, the second cold source temperature area piece is connected with the first experiment cold plate, and cold energy conduction is carried out.
2. The spindle-shaped cryogenic pre-cooling device of claim 1, wherein the first spindle-shaped conductive element comprises: the main body conduction part is connected with the first experiment cold plate and conducts cold energy;
the upper contact part is fixedly arranged at one end of the main body conducting part and is conical;
the lower contact part is fixedly arranged at the other end of the main body conduction part and is conical;
the first cold source temperature area piece is provided with a first pair of interfaces, the first pair of interfaces are conical, the second cold source temperature area piece is provided with a second pair of interfaces, and the second pair of interfaces are conical;
the upper contact is embedded within the first pair of interfaces or the lower contact is embedded within the second pair of interfaces by movement of the body conductive portion.
3. The spindle-shaped cryogenic precooling apparatus as claimed in claim 2, wherein a heat conduction member is connected to the first experiment cold plate, and one end of the heat conduction member is connected to the main body conduction portion;
the heat conduction piece is a heat conduction copper rope.
4. A spindle-shaped cryogenic precooling apparatus as claimed in any one of claims 2-3, wherein the first cold source temperature section comprises: the driving component penetrates through the first cold source temperature zone plate and is connected with the first spindle-shaped conducting piece;
the first contact disc is movably arranged on one side of the first cold source temperature zone plate, which faces the first spindle-shaped conducting piece, and the first butt joint opening is formed in the surface of the first contact disc, which faces the first spindle-shaped conducting piece;
and the upper heat conduction piece is connected with the first cold source temperature zone plate and the first contact plate.
5. The spindle-shaped cryogenic precooling apparatus as claimed in claim 4, wherein a first buffer elastic member is provided between the first contact plate and the first cold source temperature zone plate.
6. The spindle-shaped cryogenic precooling apparatus as claimed in claim 4, wherein a sealing cover is provided on said first cold source temperature zone plate, said driving assembly penetrating said sealing cover;
the first contact plate is movably connected to the sealing cover.
7. The spindle-shaped cryogenic precooling apparatus as claimed in claim 4, wherein the second cold source temperature section comprises: the second cold source temperature zone plate is positioned at one side of the first spindle-shaped conducting piece, which is away from the first cold source temperature zone plate;
the second contact disc is movably arranged on one side of the second cold source temperature zone plate, which faces the first spindle-shaped conducting piece, and the second butt joint opening is formed in the surface of the second contact disc, which faces the first spindle-shaped conducting piece;
the lower heat conduction piece is connected with the second cold source temperature zone plate and the second contact plate;
the second buffer elastic piece is connected between the second contact disc and the second cold source temperature zone plate.
8. The spindle-shaped cryogenic pre-cooling device according to claim 7, wherein the drive assembly comprises: the displacement driver is arranged on one side of the first cold source temperature area part, which is away from the second cold source temperature area part;
the displacement control rod is connected to the displacement driver and moves back and forth along a preset direction through the driving of the displacement driver;
the displacement control rod penetrates through the first cold source temperature area part, and the first spindle-shaped conducting part is connected to the displacement control rod.
9. The spindle-shaped cryogenic pre-cooling device according to claim 8, further comprising: the third contact disc is movably arranged on one side of the second cold source temperature zone plate, which is away from the first cold source temperature zone plate, through a third buffer elastic piece, and the third contact disc is in cold conduction connection with the second cold source temperature zone plate through a third heat conduction piece;
the second experiment cold plate is arranged on one side of the third contact disc, which is away from the second cold source temperature zone plate;
the thermal contact funnel is positioned at one side of the second experiment cold plate, which is away from the second cold source temperature zone plate;
the drive assembly further includes: the second spindle-shaped conducting piece is connected to the first spindle-shaped conducting piece through a penetrating rod, and the second spindle-shaped conducting piece is connected with the second experiment cold plate;
the second spindle-shaped conductive piece is connected with a third contact disc or is abutted into the thermal contact funnel through the driving of the driving assembly;
the second cold source temperature area component, the third contact disc, the third buffer elastic piece, the second experiment cold plate and the second spindle-shaped conduction piece form a temperature area component, the temperature area component is provided with a plurality of temperature area components, the plurality of temperature area components are sequentially arranged along the preset direction, and the thermal contact funnel is positioned at one side of the second spindle-shaped conduction piece at the lowest layer.
10. A refrigerator, comprising: a refrigerator main frame, and a spindle-shaped cryogenic pre-cooling device as claimed in any one of claims 1 to 9, the spindle-shaped cryogenic pre-cooling device being provided on the refrigerator main frame.
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| CN202310774567.3A CN116951817B (en) | 2023-06-27 | 2023-06-27 | Spindle-shaped low-temperature pre-cooling device and refrigerator |
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| CN202310774567.3A CN116951817B (en) | 2023-06-27 | 2023-06-27 | Spindle-shaped low-temperature pre-cooling device and refrigerator |
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