Controllable heat pipe heating device

Abstract

The utility model relates to a controllable heat pipe heating device which comprises a heat pipe, a first permanent magnet and a heat source, the heat pipe comprises a pipe body and a plug body, the plug body is located in the pipe body, the first permanent magnet is located on the outer side of the pipe body and drives the plug body to move through magnetic force, the pipe body comprises a heat absorption section, a heat release section and a diameter shrinkage section, and the diameter shrinkage section is located in the pipe body. The two ends of the reducing section are integrally formed with the heat absorption section and the heat release section respectively, the plug body is used for plugging the reducing section, and the heat absorption section is fixedly connected with a heat source. Ice crystals in the heat pipe move in the heat pipe through gravity, so that working fluid in the heat pipe can still conduct phase change heat conduction after being solidified, and the heat conduction efficiency of the heat pipe is greatly improved. The plug body in the pipe body is driven to move through magnetic force, when the low-temperature pump body works in a cooling mode, the plug body separates the heat absorption section from the heat release section, ice crystals are prevented from moving to the heat absorption section, phase change heat conduction is stopped, and interference of external temperature on the internal temperature of the low-temperature pump body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic pumps, and in particular to a controllable heat pipe heating device. Background Technology

[0002] The operating temperature of existing heat pipes cannot be lower than the freezing point of the working fluid inside them; otherwise, the working fluid will solidify and will not be able to reach the heat absorption section through capillary action. This will cause the working fluid inside the heat pipe to stop phase change, resulting in a significant decrease in the heat pipe's thermal conductivity.

[0003] Cryogenic pumps are storage-type vacuum pumps. They contain an extremely low-temperature surface that captures gases through condensation and adsorption to achieve ultra-high vacuum. Cryogenic pumps can obtain clean vacuums with the highest pumping rates and lowest ultimate pressures, and are widely used in semiconductor and integrated circuit research and production, as well as in molecular beam research, vacuum coating equipment, vacuum surface analysis instruments, ion implanters, and space simulation devices.

[0004] When a cryogenic pump reaches its saturation capacity after long-term operation, its pumping speed drops sharply. At this point, it is necessary to stop the pump and raise the temperature to release the gas adsorbed on the cryogenic plate and restore its original pumping performance. The process of raising the temperature and using a pre-pump to remove the released condensed and adsorbed gas is called "regeneration".

[0005] Regeneration can be achieved in the following ways:

[0006] ① Natural heating method: Turn off the power to the refrigeration unit and use the heat from the pump wall to slowly heat up the cryogenic pump. The heating is very slow at first, but when the pressure inside the pump rises to the point where convection heat transfer takes effect, the heating rate accelerates and eventually reaches a stable temperature.

[0007] ② Venting and Heating Method: After shutting down the refrigeration unit, open the vent valve to release clean, dry air, causing the low-temperature pump's low-temperature plate to heat up rapidly.

[0008] ③ Electric heating method: Electric heaters are installed on the primary and secondary cold heads of the cryogenic pump. During regeneration, the low-temperature plate is heated by electricity to quickly raise the temperature and shorten the regeneration time.

[0009] The existing electric heating method uses an electric heating rod with a metal shell inserted into the cryogenic pump. Inside the empty metal shell are multiple heating wires and silicone. The silicone is located between the heating wires and the metal shell to prevent the heating wires from contacting each other or the heating rod shell, thus preventing short circuits.

[0010] Thinner silicone rubber has better thermal conductivity, but it also makes the heating element more prone to short circuits, leading to electromagnetic interference. Conversely, thicker silicone rubber reduces the likelihood of short circuits, but reduces thermal conductivity. Because of the poor thermal conductivity of silicone rubber, and the relatively thick silicone rubber layer in existing heating elements, the heating output of the heating element to the cold head cannot be further increased, resulting in longer regeneration times. Furthermore, the need for limited internal space in cryogenic pumps and a reduction in the number of sealing interfaces prevents increasing the number of heating elements from increasing the heating output. Utility Model Content

[0011] This invention provides a controllable heat pipe heating device, which solves the above-mentioned technical problems.

[0012] A controllable heat pipe heating device includes: a heat pipe, a first permanent magnet, and a heat source. The heat pipe includes a pipe body and a plug, with the plug located inside the pipe body and the first permanent magnet located outside the pipe body. The first permanent magnet drives the plug to move through magnetic force. The pipe body includes a heat-absorbing section, a heat-releasing section, and a diameter-reducing section. The two ends of the diameter-reducing section are integrally formed with the heat-absorbing section and the heat-releasing section, respectively. The plug is used to seal the diameter-reducing section, and the heat-absorbing section is fixedly connected to the heat source.

[0013] Furthermore, the heat pipe consists of a heat-releasing section, a diameter-reducing section, and a heat-absorbing section from top to bottom. The height of the heat pipe decreases continuously from top to bottom. The tube body is filled with a working fluid, which moves from the heat-releasing section to the heat-absorbing section by gravity.

[0014] Furthermore, it also includes a heat insulation sleeve, which is fitted onto the outside of the heat absorption section and the heat source.

[0015] Furthermore, the heat pipe also includes a second permanent magnet located inside the pipe body. The second permanent magnet is fixed in position relative to the plug body, and the first permanent magnet drives the second permanent magnet by magnetic force.

[0016] Furthermore, the heat pipe also includes a connecting rod and a slider. The two ends of the connecting rod are fixedly connected to the plug and the second permanent magnet, respectively. The slider is fixedly connected to the connecting rod and slidably connected to the inner wall of the pipe. The slider has a vent hole.

[0017] Furthermore, it also includes a driving device located inside the heat insulation sleeve, which is fixedly connected to the cylinder housing. A vacuum environment is formed inside the heat insulation sleeve. The driving device is fixedly connected to the cylinder housing or the heat insulation sleeve. The driving device is connected to the first permanent magnet and drives the first permanent magnet to move.

[0018] Furthermore, it also includes a fan, the heat source being a heat sink, the heat sink comprising a base plate and fins, and the fan being used to drive air movement between the fins.

[0019] Furthermore, the heat source is a heater.

[0020] Furthermore, a non-stick coating is fixedly disposed inside the tube.

[0021] Furthermore, a first channel is formed above the plug body, connecting the heat-releasing section and the diameter-reducing section.

[0022] Furthermore, it also includes a permanent magnet shell, which is fitted onto the outside of the first permanent magnet and fixedly connected to the first permanent magnet, and the permanent magnet shell is slidably connected to the heat absorption section.

[0023] Furthermore, it also includes a track, which is fixedly connected to the heat dissipation section, and the permanent magnet shell is slidably connected to the track and moves along the track direction.

[0024] This utility model has the following advantages:

[0025] 1. Ice crystals inside the heat pipe move within the heat pipe due to gravity, allowing the working fluid inside the heat pipe to still undergo phase change heat conduction after solidification, greatly improving the heat conduction efficiency of the heat pipe.

[0026] 2. The movement of the plug inside the tube is driven by magnetic force. When the cryogenic pump body is cooling down, the plug separates the heat absorption section and the heat release section, preventing ice crystals from moving to the heat absorption section, stopping phase change heat conduction, and reducing the interference of external temperature on the internal temperature of the cryogenic pump body. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0028] Figure 1 : A three-dimensional structural diagram of a cryogenic pump;

[0029] Figure 2 A three-dimensional structural diagram of a cryogenic pump with some components removed;

[0030] Figure 3 : A cross-sectional structural diagram of Example 1;

[0031] Figure 4 Example 1: Cross-sectional view of the structure after installation;

[0032] Figure 5 : Figure 4 A magnified view of a section at point A in the middle;

[0033] Figure 6 : A cross-sectional view of Example 2;

[0034] Figure 7 Example 2: Cross-sectional view of the structure after installation;

[0035] Figure 8 : Figure 7 A magnified view of a section at point B in the middle;

[0036] Figure 9 : Figure 6 A magnified view of a section at point C. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and examples:

[0038] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Example 1:

[0042] like Figures 1 to 5As shown, a controllable heat pipe heating device includes: a heat pipe 2, a first permanent magnet 7, and a heat source. The heat pipe 2 includes a pipe body 20 and a plug 25. The plug 25 is located inside the pipe body 20, and the first permanent magnet 7 is located outside the pipe body 20. The first permanent magnet 7 drives the plug 25 to move through magnetic force. The pipe body 20 includes a heat-absorbing section 23, a heat-releasing section 22, and a diameter-reducing section 24. The two ends of the diameter-reducing section 24 are integrally formed with the heat-absorbing section 23 and the heat-releasing section 22, respectively. The plug 25 is used to seal the diameter-reducing section 24. The heat-absorbing section 23 is located and fixedly connected to the heat source.

[0043] Optionally, the plug 25 is made of magnetic material, and the plug 25 and the first permanent magnet 7 are directly driven by magnetic force.

[0044] Furthermore, the heat pipe 2 consists of a heat-releasing section 22, a diameter-reducing section 24, and a heat-absorbing section 23 from top to bottom. The height of the heat pipe 2 decreases continuously from top to bottom. The pipe body 20 is filled with a working fluid, which moves from the heat-releasing section 22 to the heat-absorbing section 23 by gravity.

[0045] Furthermore, the working fluid inside the tube 20 has a melting point below -100°C and a critical temperature above 0°C.

[0046] Preferably, the working fluid is ethanol, R23, R508B, or R600a.

[0047] During installation, heat pipe 2 is passed through cylinder housing 10 of cryogenic pump 1, heat dissipation section 22 is fixed to primary cold head 14 and secondary cold head 15, and then the connection between heat pipe 2 and cylinder housing 10 is sealed.

[0048] Preferably, the tube body 20 is made of aluminum, copper, aluminum alloy, or copper alloy. The tube body 20 is welded and fixed to the cylinder housing 10.

[0049] Optionally, the heat pipe 2 is brazed to the primary cold head 14, and the heat pipe 2 is brazed to the secondary cold head 15.

[0050] Optionally, it also includes a first fixing device 4 and a second fixing device 5, wherein the first fixing device 4 fixes the heat pipe 2 to the primary cold head 14, and the second fixing device 5 fixes the heat pipe 2 to the secondary cold head 15.

[0051] Preferably, the first fixing device 4 and the second fixing device 5 can be fixing blocks (such as...). Figure 4 (As shown) or clamps. The fixing block is fixed to the cold head by screws; the clamps tighten the cold head and heat pipe 2 inside, making them contact each other.

[0052] Furthermore, the heat pipe 2 also includes a second permanent magnet 27, which is located inside the pipe body 20. The position of the second permanent magnet 27 relative to the plug body 25 is fixed, and the first permanent magnet 7 drives the second permanent magnet 27 by magnetic force.

[0053] Furthermore, the heat pipe 2 also includes a connecting rod 26 and a slider 28. The two ends of the connecting rod 26 are fixedly connected to the plug body 25 and the second permanent magnet 27, respectively. The slider 28 is fixedly connected to the connecting rod 26 and is slidably connected to the inner wall of the pipe body 20. The slider 28 has a vent hole 281.

[0054] Furthermore, it also includes a permanent magnet shell 72, which is fitted onto the outside of the first permanent magnet 7 and fixedly connected to the first permanent magnet 7, and the permanent magnet shell 72 is slidably connected to the heat absorption section 23.

[0055] Furthermore, it also includes a track 71, which is fixedly connected to the heat dissipation section 22, and the permanent magnet shell 72 is slidably connected to the track 71 and moves along the direction of the track 71.

[0056] Furthermore, a first channel 251 is formed above the plug body 25, connecting the heat-releasing section 22 and the diameter-reducing section 24. The first channel 251 is used to balance the pressure difference between the two ends; in order to prevent ice crystals from passing through the first channel 251, the first channel 251 cannot be located at the lower part of the plug body 25.

[0057] Furthermore, it also includes a fan 83, the heat source is a heat sink 9, the heat sink 9 includes a base plate 91 and fins 92, and the fan 83 is used to drive the air movement between the fins 92.

[0058] Preferably, the system also includes a bracket 101, which contacts the cylinder housing 10 and the radiator 9 respectively, and provides support.

[0059] It should be noted that the cryogenic pump 1 is a prior art cryogenic pump, such as the cryogenic pump disclosed in Chinese Utility Model Patent No. CN117489563B. The primary cold head 14 and the secondary cold head 15 of the cryogenic pump 1 are located inside the cylinder housing 10 and the outer housing 11, respectively, and the cylinder housing 10 and the outer housing 11 are fixedly connected. The cold shield 2 and the cold umbrella 3 of the cryogenic pump body 1 are disposed inside the outer housing 11, and the end of the cylinder housing 10 is fixed to the base via the cold head base 16.

[0060] At work: such as Figure 4As shown, the outer shell 11 needs to be positioned above the cylinder shell 10. The permanent magnet shell 72 is manually moved, and the first permanent magnet 7 drives the second permanent magnet 27 to move synchronously via magnetic force. After the plug 25 seals the heat-dissipating section 22 and the diameter-reducing section 24, the first permanent magnet 7 stops moving and is fixed to the tube body 20. This fixing can be achieved using the frictional force between the track 71 and the permanent magnet shell 72.

[0061] Subsequently, the internal temperature of cryogenic pump 1 decreases, allowing the cold shield 12 and cold umbrella 13 to adsorb molecules in the gas at low temperatures. During the temperature reduction process, due to the excessively low temperature of cryogenic pump 1, the working fluid inside tube 20 will solidify into ice crystals. Under the influence of gravity, the ice crystals will slide downwards along tube 20 until they are blocked by plug 25, preventing them from moving downwards to the heat absorption section 23, thus stopping the phase change heat conduction of heat pipe 2. After the phase change heat conduction stops, the influence of the external temperature of cryogenic pump 1 on its interior is reduced, allowing the cold shield 2 and cold umbrella 3 inside cryogenic pump 1 to smoothly decrease to the specified temperature.

[0062] During regeneration: The permanent magnet shell 72 moves, and the first permanent magnet 7 drives the second permanent magnet 27 to move synchronously, away from the junction of the plug body 25 and the heat-releasing section 22 and the narrowing section 24. Ice crystals slide along the lower part of the inner wall of the tube body 20 to the heat-absorbing section 23 under gravity. The heat source transfers heat to the heat-absorbing section 23, causing the ice crystals to melt and then vaporize or sublimate. The vaporized working fluid moves to the contact point between the heat-releasing section 22 and the first-stage cold head 14 and the second-stage cold head 15, where it liquefies or condenses. The heat-releasing working fluid or its transformed ice crystals move downwards along the heat pipe 2 to the flat plate section 21 under gravity to continue absorbing heat, completing the phase change cycle of the heat pipe 20. During this process, the fan 83 operates, accelerating the gas flow between the fins 92, thereby accelerating the heat exchange efficiency. The first-stage cold head 14 and the second-stage cold head 15 can eventually reach temperatures close to room temperature.

[0063] After the working fluid solidifies, heat pipe 2 smoothly undergoes phase change and conducts heat, greatly improving the heat conduction efficiency. This allows a large amount of heat to be transferred to the first-stage cold head 14 and the second-stage cold head 15 in a short time, enabling the first-stage cold head 14 and the second-stage cold head 15 to heat up rapidly and shorten the regeneration time.

[0064] It should be noted that controllable heat pipe heating devices can be used not only in cryogenic pumps, but also in cryogenic fields such as experiments or aerospace.

[0065] Example 2:

[0066] like Figure 1 , Figure 2 , Figures 6 to 9As shown, a controllable heat pipe heating device includes: a heat pipe 2, a first permanent magnet 7, and a heat source. The heat pipe 2 includes a pipe body 20 and a plug 25. The plug 25 is located inside the pipe body 20, and the first permanent magnet 7 is located outside the pipe body 20. The first permanent magnet 7 drives the plug 25 to move through magnetic force. The pipe body 20 includes a heat-absorbing section 23, a heat-releasing section 22, and a diameter-reducing section 24. The two ends of the diameter-reducing section 24 are integrally formed with the heat-absorbing section 23 and the heat-releasing section 22, respectively. The plug 25 is used to seal the diameter-reducing section 24. The heat-absorbing section 23 is located and fixedly connected to the heat source.

[0067] Furthermore, the heat pipe 2 consists of a heat-releasing section 22, a diameter-reducing section 24, and a heat-absorbing section 23 from top to bottom. The height of the heat pipe 2 decreases continuously from top to bottom. The pipe body 20 is filled with a working fluid, which moves from the heat-releasing section 22 to the heat-absorbing section 23 by gravity.

[0068] Furthermore, the working fluid inside the tube 20 has a melting point below -100°C and a critical temperature above 0°C.

[0069] Preferably, the working fluid is ethanol, R23, R508B, or R600a.

[0070] During installation, heat pipe 2 is passed through cylinder housing 10 of cryogenic pump 1, heat dissipation section 22 is fixed to primary cold head 14 and secondary cold head 15, and then the connection between heat pipe 2 and cylinder housing 10 is sealed.

[0071] Preferably, the tube body 20 is made of aluminum, copper, aluminum alloy, or copper alloy. The tube body 20 is welded and fixed to the cylinder housing 10.

[0072] Optionally, the heat pipe 2 is brazed to the primary cold head 14, and the heat pipe 2 is brazed to the secondary cold head 15.

[0073] Optionally, it also includes a first fixing device 4 and a second fixing device 5, wherein the first fixing device 4 fixes the heat pipe 2 to the primary cold head 14, and the second fixing device 5 fixes the heat pipe 2 to the secondary cold head 15.

[0074] Preferably, the first fixing device 4 and the second fixing device 5 can be fixing blocks (such as...). Figure 7 (As shown) or clamps. The fixing block is fixed to the cold head by screws; the clamps tighten the cold head and heat pipe 2 inside, making them contact each other.

[0075] Furthermore, the heat pipe 2 also includes a second permanent magnet 27, which is located inside the pipe body 20. The position of the second permanent magnet 27 relative to the plug body 25 is fixed, and the first permanent magnet 7 drives the second permanent magnet 27 by magnetic force.

[0076] Furthermore, the heat pipe 2 also includes a connecting rod 26 and a slider 28. The two ends of the connecting rod 26 are fixedly connected to the plug body 25 and the second permanent magnet 27, respectively. The slider 28 is fixedly connected to the connecting rod 26 and is slidably connected to the inner wall of the pipe body 20. The slider 28 has a vent hole 281.

[0077] Furthermore, it also includes a permanent magnet shell 72, which is fitted onto the outside of the first permanent magnet 7 and fixedly connected to the first permanent magnet 7, and the permanent magnet shell 72 is slidably connected to the heat absorption section 23.

[0078] Furthermore, a non-stick coating 201 is fixedly provided inside the tube body 20.

[0079] Preferably, the non-stick coating 201 is a polytetrafluoroethylene coating.

[0080] Furthermore, a first channel 251 is formed above the plug body 25, connecting the heat-releasing section 22 and the diameter-reducing section 24. The first channel 251 is used to balance the pressure difference between the two ends; in order to prevent ice crystals from passing through the first channel 251, the first channel 251 cannot be located at the lower part of the plug body 25.

[0081] Furthermore, the heat source is heater 3. Preferably, heater 3 is an electric heater.

[0082] Furthermore, it also includes a heat insulation sleeve 8, which is fitted onto the outside of the heat absorption section 23 and the heat source. The inner cavity 80 of the heat insulation sleeve 8 forms a vacuum environment. The vacuum environment of the inner cavity 80 reduces the heat exchange between the heat pipe 2 and the outside of the heat insulation sleeve 8, thus preventing heat exchange through the metal tube body 10 when the cryogenic pump 1 is working.

[0083] Furthermore, the heat insulation sleeve 8 of the rigid outer shell is made of metal, and the heat insulation sleeve 8 is welded and fixed to the cylinder housing 10.

[0084] Furthermore, a reflective layer 85 is fixedly provided on the inner wall of the heat insulation sleeve 8.

[0085] Preferably, the reflective layer 85 is a silver plating layer.

[0086] Furthermore, it also includes a drive device 6, which is located inside the heat insulation sleeve 8. The heat insulation sleeve 8 is fixedly connected to the cylinder housing 10. A vacuum environment is formed inside the heat insulation sleeve 8. The drive device 6 is fixedly connected to the cylinder housing 10 or the heat insulation sleeve 8. The drive device 6 is connected to the first permanent magnet 7 and drives the first permanent magnet 7 to move.

[0087] Preferably, the drive device 6 is an electric push rod.

[0088] It should be noted that the cryogenic pump 1 is a prior art cryogenic pump, such as the cryogenic pump disclosed in Chinese Utility Model Patent No. CN117489563B. The primary cold head 14 and the secondary cold head 15 of the cryogenic pump 1 are located inside the cylinder housing 10 and the outer housing 11, respectively, and the cylinder housing 10 and the outer housing 11 are fixedly connected. The cold shield 2 and the cold umbrella 3 of the cryogenic pump body 1 are disposed inside the outer housing 11, and the end of the cylinder housing 10 is fixed to the base via the cold head base 16.

[0089] At work: such as Figure 7 As shown, the outer shell 11 needs to be located above the cylinder shell 10. The drive device 6 drives the permanent magnet shell 72, and the first permanent magnet 7 drives the second permanent magnet 27 to move synchronously through magnetic force. After the plug 25 seals the heat dissipation section 22 and the diameter reduction section 24, the first permanent magnet 7 stops moving and is fixed to the tube 20. The drive device 6 can use a brake or locking mechanism to fix the position of the first permanent magnet 7.

[0090] Subsequently, the internal temperature of cryogenic pump 1 decreases, allowing the cold shield 12 and cold umbrella 13 to adsorb molecules in the gas at low temperatures. During the temperature reduction process, due to the excessively low temperature of cryogenic pump 1, the working fluid inside tube 20 will solidify into ice crystals. Under the influence of gravity, the ice crystals will slide downwards along tube 20 until they are blocked by plug 25, preventing them from moving downwards to the heat absorption section 23, thus stopping the phase change heat conduction of heat pipe 2. After the phase change heat conduction stops, the influence of the external temperature of cryogenic pump 1 on its interior is reduced, allowing the cold shield 2 and cold umbrella 3 inside cryogenic pump 1 to smoothly decrease to the specified temperature.

[0091] During regeneration: The drive unit 6 moves the permanent magnet shell 72, and the first permanent magnet 7 drives the second permanent magnet 27 to move synchronously, away from the junction of the plug body 25 and the heat-releasing section 22 and the narrowing section 24. Ice crystals slide along the lower part of the inner wall of the tube body 20 to the heat-absorbing section 23 under gravity. The heater 3 heats up and transfers heat to the heat-absorbing section 23, causing the ice crystals to melt and then vaporize or sublimate. The vaporized working fluid moves to the contact point between the heat-releasing section 22 and the first-stage cold head 14 and the second-stage cold head 15, where it liquefies or condenses. The heat-releasing working fluid or its transformed ice crystals move downwards along the heat pipe 2 to the flat plate section 21 under gravity to continue absorbing heat, completing the phase change cycle of the heat pipe 20.

[0092] After the working fluid solidifies, heat pipe 2 smoothly undergoes phase change and conducts heat, greatly improving the heat conduction efficiency. This allows a large amount of heat to be transferred to the first-stage cold head 14 and the second-stage cold head 15 in a short time, enabling the first-stage cold head 14 and the second-stage cold head 15 to heat up rapidly and shorten the regeneration time.

[0093] It should be noted that controllable heat pipe heating devices can be used not only in cryogenic pumps, but also in cryogenic fields such as experiments or aerospace.

[0094] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A controllable heat pipe heating device, characterized in that, include: The heat pipe (2), the first permanent magnet (7), and the heat source are described. The heat pipe (2) includes a pipe body (20) and a plug (25). The plug (25) is located inside the pipe body (20), and the first permanent magnet (7) is located outside the pipe body (20). The first permanent magnet (7) drives the plug (25) to move by magnetic force. The pipe body (20) includes a heat-absorbing section (23), a heat-releasing section (22), and a diameter-reducing section (24). The two ends of the diameter-reducing section (24) are integrally formed with the heat-absorbing section (23) and the heat-releasing section (22), respectively. The plug (25) is used to seal the diameter-reducing section (24). The heat-absorbing section (23) is located and fixedly connected to the heat source.

2. The controllable heat pipe heating device according to claim 1, characterized in that: The heat pipe (2) consists of a heat-releasing section (22), a diameter-reducing section (24), and a heat-absorbing section (23) from top to bottom. The height of the heat pipe (2) decreases continuously from top to bottom. The pipe body (20) is filled with working fluid, which moves from the heat-releasing section (22) to the heat-absorbing section (23) by gravity.

3. The controllable heat pipe heating device according to claim 2, characterized in that: It also includes a heat insulation sleeve (8), which is fitted on the outside of the heat absorption section (23) and the heat source.

4. The controllable heat pipe heating device according to claim 3, characterized in that: The heat pipe (2) also includes a second permanent magnet (27), which is located inside the tube body (20). The position of the second permanent magnet (27) relative to the plug body (25) is fixed. The first permanent magnet (7) drives the second permanent magnet (27) by magnetic force.

5. The controllable heat pipe heating device according to claim 4, characterized in that: The heat pipe (2) also includes a connecting rod (26) and a slider (28). The two ends of the connecting rod (26) are fixedly connected to the plug (25) and the second permanent magnet (27) respectively. The slider (28) is fixedly connected to the connecting rod (26) and is slidably connected to the inner wall of the tube body (20). The slider (28) has a vent hole (281).

6. The controllable heat pipe heating device according to claim 4, characterized in that: It also includes a drive device (6), which is located inside the heat insulation sleeve (8). The heat insulation sleeve (8) is fixedly connected to the cylinder housing (10). A vacuum environment is formed inside the heat insulation sleeve (8). The drive device (6) is fixedly connected to the cylinder housing (10) or the heat insulation sleeve (8). The drive device (6) is connected to the first permanent magnet (7) and drives the first permanent magnet (7) to move.

7. The controllable heat pipe heating device according to claim 1, characterized in that: It also includes a fan (83), the heat source being a radiator (9), the radiator (9) including a base plate (91) and fins (92), and the fan (83) being used to drive air movement between the fins (92).

8. The controllable heat pipe heating device according to claim 1, characterized in that: The heat source is a heater (3).

9. A controllable heat pipe heating device according to claim 1, characterized in that: The tube body (20) is fixedly provided with a non-stick coating (201); A first channel (251) is formed above the plug (25) connecting the heat-releasing section (22) and the diameter-reducing section (24).

10. A controllable heat pipe heating device according to claim 4, characterized in that: It also includes a permanent magnet shell (72), which is fitted on the outside of the first permanent magnet (7) and fixedly connected to the first permanent magnet (7), and the permanent magnet shell (72) is slidably connected to the heat absorption section (23); It also includes a track (71), which is fixedly connected to the heat dissipation section (22), and the permanent magnet shell (72) is slidably connected to the track (71) and moves along the direction of the track (71).

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