CN116558339B - Heat pipe device and exhaust method - Google Patents
Heat pipe device and exhaust method Download PDFInfo
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- CN116558339B CN116558339B CN202310454858.4A CN202310454858A CN116558339B CN 116558339 B CN116558339 B CN 116558339B CN 202310454858 A CN202310454858 A CN 202310454858A CN 116558339 B CN116558339 B CN 116558339B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0283—Means for filling or sealing heat pipes
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Compressor (AREA)
Abstract
The application relates to a heat pipe device and an exhaust method, wherein a pipe body is provided with an assembly opening and a containing cavity communicated with the assembly opening, a sealing assembly is arranged at the assembly opening, and the sealing assembly is provided with an exhaust sealing hole. The exhaust piston is movably arranged in the accommodating cavity, and the outer peripheral side of the exhaust piston is movably matched with the inner wall of the accommodating cavity so as to divide the accommodating cavity into a pressure cavity far away from the assembly port and an exhaust cavity close to the assembly port. The pressure cavity is internally provided with a liquid working medium, when the temperature of the working medium in the pressure cavity is higher than the boiling point temperature, the gasified working medium can push the exhaust piston to move towards the direction close to the sealing assembly so as to push the non-condensable gas in the exhaust cavity out of the accommodating cavity through the exhaust sealing hole, and one end of the exhaust piston close to the sealing assembly can be inserted into the exhaust sealing hole to seal the exhaust sealing hole. The heat pipe device and the exhaust method provided by the application solve the problems of complex equipment and high implementation difficulty of the heat pipe vacuumizing.
Description
Technical Field
The present application relates to the field of heat pipes, and in particular, to a heat pipe device and an exhaust method.
Background
In general, a heat pipe needs to be vacuumized, and the heat pipe generally discharges non-condensable gas inside the heat pipe through a low-pressure single-side vacuuming method, a secondary vacuuming method, a high-low pressure double-side vacuuming method or a heating vacuuming method. However, the above method is complex, and the above method generally needs to be vacuumized through professional equipment, so that the implementation difficulty of discharging non-condensable gas from the heat pipe is increased.
Disclosure of Invention
Based on this, it is necessary to provide a heat pipe device and an exhaust method to solve the problems of complex equipment and difficult implementation of the existing heat pipe vacuumizing device.
The heat pipe device comprises a pipe body, an exhaust piston and a sealing component, wherein the pipe body is provided with an assembly opening and a containing cavity communicated with the assembly opening, the sealing component is arranged at the assembly opening, and the sealing component is provided with an exhaust sealing hole so that the containing cavity can be communicated with an external space through the exhaust sealing hole. The exhaust piston is movably arranged in the accommodating cavity, and the outer peripheral side of the exhaust piston is movably matched with the inner wall of the accommodating cavity so as to divide the accommodating cavity into a pressure cavity far away from the assembly port and an exhaust cavity close to the assembly port. The pressure cavity is internally provided with a liquid working medium, and when the temperature of the working medium in the pressure cavity is higher than the boiling point temperature, the gasified working medium can push the exhaust piston to move towards the direction close to the sealing assembly so as to push the non-condensable gas in the exhaust cavity out of the accommodating cavity through the exhaust sealing hole, and one end of the exhaust piston close to the sealing assembly can be inserted into the exhaust sealing hole to seal the exhaust sealing hole.
In one embodiment, the vent piston is provided with a communication hole communicating the pressure chamber and the vent chamber, and the sealing assembly is capable of sealing the communication hole near the opening of the vent chamber when the vent piston seals the vent sealing hole.
In one embodiment, the vent piston comprises a main body and a screw joint, wherein the screw joint is connected to one end of the main body close to the sealing assembly, and the screw joint is in threaded sealing fit with the inner wall of the vent sealing hole.
In one embodiment, the accommodating cavity, the screw joint, the exhaust sealing hole and the exhaust piston are all cylindrical and coaxially arranged, the communication holes are arranged at intervals along the central axis of the exhaust piston, and the communication holes are internally provided with stress inclined planes which are arranged at an included angle with the axis of the exhaust piston, so that the acting force of the gaseous working medium on the stress inclined planes can be decomposed into axial force parallel to the axial direction of the exhaust piston and tangential force perpendicular to the radial direction of the exhaust piston.
In one embodiment, the end of the main body facing away from the screw joint is provided with a balance cone coaxially arranged with the main body, the balance cone is conical, and the cross-sectional area of the balance cone is in a decreasing trend along the direction from the end close to the screw joint to the end far away from the screw joint.
In one embodiment, the sealing assembly comprises a gasket and a sealing ring, the exhaust sealing hole penetrates through the sealing ring and the gasket in sequence, the heat pipe device further comprises a cover body, the exhaust sealing hole extends to the cover body and does not penetrate through the cover body, the screw joint can be connected to the cover body through the exhaust sealing hole in the cover body in a threaded manner, and one end, close to the screw joint, of the main body is pressed against one end, close to the main body, of the sealing ring, so that the sealing ring and the gasket are tightly clamped between the main body and the cover body.
In one embodiment, the edge of the pipe body located at the assembly opening extends towards the center of the assembly opening to form a through hole flanging structure, the sealing ring is made of elastic materials, the sealing ring comprises a first ring body, a second ring body and a connecting body for connecting the first ring body and the second ring body, annular clamping grooves are formed in the interval mode between the first ring body and the second ring body, the sealing ring can penetrate through the through hole through the connecting body, the sealing ring can be clamped to the flanging structure through the clamping grooves, and the first ring body and the second ring body located on two sides of the clamping grooves are respectively and tightly attached to two sides of the flanging structure.
In one embodiment, the periphery of the screw joint is provided with a cutting surface so that the cross section of the screw joint is non-circular, and the shape of the through hole is the same as the shape of the cross section of the screw joint.
In one embodiment, the accommodating cavity is vertically arranged, one end of the exhaust piston, which is close to the pressure cavity, is provided with a conical gas collecting cavity, the tip end of the gas collecting cavity faces upwards, and the tip end of the gas collecting cavity is communicated with the communication hole.
The application also provides an exhaust method, which comprises the following steps:
the liquid working medium is arranged at the bottom of the pipe body, and the exhaust piston is arranged above the liquid working medium;
Then heating the liquid working medium to evaporate and gasify the working medium and push the exhaust piston to move upwards until the exhaust piston moves to the top end of the pipe body;
and sealing and installing the exhaust piston at the top end of the pipe body, and stopping heating the working medium.
Compared with the prior art, the heat pipe device and the exhaust method provided by the application have the following specific steps that the exhaust process of the heat pipe device is that firstly, a liquid working medium and an exhaust piston are arranged in a pressure cavity, and then, a sealing assembly is arranged at an assembly port. And then, heating the liquid working medium to enable the liquid working medium to be heated and evaporated to become a gaseous state, wherein obviously, the density of the gaseous working medium is far less than that of the liquid working medium, and the outer peripheral side of the exhaust piston is combined with the inner wall of the containing cavity in a movable fit manner, so that the gaseous working medium can be rapidly expanded and drive the exhaust piston to move towards the direction close to the sealing assembly, and the noncondensable gas in the exhaust cavity is completely discharged out of the containing cavity through the exhaust sealing hole.
Finally, because the exhaust piston is close to one end of the sealing assembly and can be inserted into the exhaust sealing hole and matched with the exhaust sealing hole in a sealing way so as to seal the assembly opening, the exhaust piston can be fixedly connected to the exhaust sealing hole after the exhaust process is finished, so that non-condensable gas in the external space is prevented from flowing back. And when the temperature of the working medium in the heat pipe is lower than the boiling point temperature, the working medium is liquefied again and flows back to the bottom of the accommodating cavity, and at the moment, other spaces of the accommodating cavity are in a vacuum state.
Therefore, the heat pipe device provided by the application has the advantages of simple structure and simple and convenient exhaust operation, greatly reduces the exhaust difficulty and improves the exhaust efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic view of a pipe body according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a heat pipe device according to an embodiment of the present application;
FIG. 3 is a partially exploded view of a heat pipe apparatus according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an exhaust piston according to an embodiment of the present application;
FIG. 5 is a top view of an exhaust piston according to an embodiment of the present application;
fig. 6 is a top view of a tube according to an embodiment of the present application.
Reference numerals: 100. a tube body; 110. a receiving chamber; 111. a pressure chamber; 112. an exhaust chamber; 120. an assembly port; 130. a liquid level window; 140. a limit protrusion; 150. a flanging structure; 151. a through hole; 160. a bottom plate; 200. an exhaust piston; 210. a communication hole; 211. a stress inclined plane; 220. a main body portion; 230. a screw joint; 231. a cutting face; 240. a balance cone; 300. a seal assembly; 310. an exhaust seal hole; 320. a cover body; 321. a boss; 330. a gasket; 340. a seal ring; 341. a first ring body; 342. a second ring body; 343. a connecting body; 344. and a clamping groove.
Detailed Description
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In general, a heat pipe needs to be vacuumized, and the heat pipe generally discharges non-condensable gas inside the heat pipe through a low-pressure single-side vacuuming method, a secondary vacuuming method, a high-low pressure double-side vacuuming method or a heating vacuuming method. However, the above method is complex, and the above method generally needs to be vacuumized through professional equipment, so that the implementation difficulty of discharging non-condensable gas from the heat pipe is increased.
Referring to fig. 1-6, in order to solve the problems of complex equipment and difficult implementation of the conventional heat pipe vacuumizing device, the present application provides a heat pipe device and an air exhausting method, the heat pipe device includes a pipe body 100, an air exhausting piston 200 and a sealing assembly 300, the pipe body 100 is provided with an assembling port 120 and a receiving cavity 110 communicating with the assembling port 120, the sealing assembly 300 is disposed at the assembling port 120 of the pipe body 100, and the sealing assembly 300 is provided with an air exhausting sealing hole 310, so that the receiving cavity 110 can communicate with an external space through the air exhausting sealing hole 310. The vent piston 200 is movably provided in the accommodating chamber 110, and an outer circumferential side of the vent piston 200 is movably fitted with an inner wall of the accommodating chamber 110 to partition the accommodating chamber 110 into a pressure chamber 111 distant from the fitting port 120 and a vent chamber 112 close to the fitting port 120. The pressure chamber 111 is provided with a liquid working medium, and when the temperature of the working medium in the pressure chamber 111 is greater than the boiling point temperature, the gasified working medium can push the exhaust piston 200 to move towards the direction close to the sealing assembly 300 so as to push the non-condensable gas in the exhaust chamber 112 out of the accommodating chamber 110 through the exhaust sealing hole 310, and one end of the exhaust piston 200 close to the sealing assembly 300 can be inserted into the exhaust sealing hole 310 and seal the exhaust sealing hole 310.
It should be noted that since the vent piston 200 is movably disposed, the ranges of the pressure chamber 111 and the vent chamber 112 are not fixed, and it is determined that the pressure chamber 111 and the vent chamber 112 are bounded by the vent piston 200, and that when the volume of the pressure chamber 111 increases, the volume of the vent chamber 112 must be reduced, and vice versa.
The exhaust process of the heat pipe device is specifically as follows, firstly, the liquid working medium and the exhaust piston 200 are installed in the pressure chamber 111, and then the sealing assembly 300 is installed at the assembly port 120 (the operation of installing the sealing assembly 300 at the assembly port 120 may be performed after the exhaust piston 200 rises to the top). After that, the liquid working medium is heated to evaporate and become gaseous, obviously, the density of the gaseous working medium is far less than that of the liquid working medium, and the outer peripheral side of the exhaust piston 200 is movably matched with the inner wall of the accommodating cavity 110, so that the gaseous working medium rapidly expands and drives the exhaust piston 200 to move towards the direction approaching to the sealing assembly 300, and the non-condensable gas in the exhaust cavity 112 is completely discharged out of the accommodating cavity 110 through the exhaust sealing hole 310.
Finally, since one end of the exhaust piston 200 near the sealing assembly 300 can be inserted into the exhaust sealing hole 310 and sealingly engaged with the exhaust sealing hole 310 to block the fitting opening 120, the exhaust piston 200 can be fixedly coupled to the exhaust sealing hole 310 after the exhaust process is completed, so as to prevent the non-condensable gas of the external space from flowing back. And, when the temperature of the working medium in the heat pipe is lower than the boiling point temperature, the working medium will be re-liquefied and flow back to the bottom of the accommodating cavity 110, and at this time, other spaces of the accommodating cavity 110 will become a vacuum state.
Therefore, the heat pipe device provided by the application has the advantages of simple structure and simple and convenient exhaust operation, greatly reduces the exhaust difficulty and improves the exhaust efficiency.
The working medium is phase-change cooling liquid.
Specifically, the phase change coolant includes water, a fluorocarbon, and a hydrocarbon. Specifically comprises acetone, ethanol, fluoridation liquid and the like, and the boiling points of the fluorocarbon and the hydrocarbon are between-88 ℃ and 50 ℃. Wherein the boiling point of the fluoridation liquid is about 58 ℃.
In this way, the working medium is advantageously gasified and a high pressure environment is created to push the exhaust piston 200 to move.
As shown in fig. 3, in an embodiment, the vent piston 200 is provided with a communication hole 210 that communicates the pressure chamber 111 and the vent chamber 112, and the seal assembly 300 is capable of blocking the opening of the communication hole 210 near the vent chamber 112 when the vent piston 200 blocks the vent seal hole 310.
In this way, the assembly process of the heat pipe device is as follows, and first, the liquid working medium is filled into the accommodating chamber 110 through the assembly port 120. Then, the vent piston 200 is fitted into the accommodating chamber 110 through the fitting port 120, and under the compression of the vent piston 200, the gas between the liquid working substance and the vent piston 200 can enter the side of the vent piston 200 near the fitting port 120 through the communication hole 210 until the vent piston 200 contacts the liquid working substance, that is, only the working substance exists in the pressure chamber 111.
It should be noted that, although the exhaust piston 200 is provided with the communication hole 210 that communicates the pressure chamber 111 and the exhaust chamber 112, since the working medium is continuously expanded by vaporization, the air pressure in the pressure chamber 111 is greater than the air pressure in the exhaust chamber 112, and thus, the non-condensable gas in the exhaust chamber 112 cannot flow back into the pressure chamber 111, which is advantageous for the heat pipe device to completely exhaust the non-condensable gas in the accommodating chamber 110.
However, not limited thereto, in other embodiments, the bottom of the pipe body 100 is also detachable, that is, the pipe body 100 is provided with a detachable bottom plate 160, so that the exhaust piston 200 can be installed and filled with working fluid without providing the communication hole 210.
In order to completely prevent the non-condensable gas in the exhaust chamber 112 from flowing back, in one embodiment, a one-way check valve (not shown) is disposed in the communication hole 210, and the one-way check valve can enable the pressure chamber 111, the communication hole 210 and the exhaust chamber 112 to be in a one-way communication state.
Specifically, a steel ball may be provided in the communication hole 210, and the steel ball closes the communication hole 210 when the steel ball moves to an end of the communication hole 210 near the pressure chamber 111, and opens the communication hole 210 when the steel ball moves to an end of the communication hole 210 near the exhaust chamber 112.
In one embodiment, the accommodating chamber 110 is vertically disposed, and a tapered gas collecting chamber (not shown) is disposed at an end of the exhaust piston 200 adjacent to the pressure chamber 111, and a tip of the gas collecting chamber faces upward and communicates with the communication hole 210.
Therefore, the non-condensable gas in the pressure cavity 111 can be collected in the gas collecting cavity and can be rapidly extruded into the communication hole 210 by the gaseous working medium, and the exhaust efficiency of the heat pipe device is further improved. Further, in one embodiment, the density of the vent piston 200 is less than the density of the liquid working fluid to enable the vent piston 200 to float above the liquid working fluid.
In this manner, on the one hand, the liquid working medium may be located below the exhaust piston 200, which is beneficial for the liquid working medium to push the exhaust piston 200 to move toward the direction approaching the seal assembly 300. On the other hand, the exhaust piston 200 is disposed above the liquid working medium, so that when the gaseous working medium pushes the exhaust piston 200, the friction force between the exhaust piston 200 and the inner wall of the accommodating cavity 110 and the gravity of the exhaust piston 200 need to be overcome at the same time, and thus, the air pressure of the gaseous working medium in the pressure cavity 111 is further increased, and the non-condensable gas in the exhaust cavity 112 is prevented from flowing back towards the pressure cavity 111.
In an embodiment, the receiving chamber 110 is vertically disposed, and the plurality of communication holes 210 are uniformly distributed along the circumferential direction of the exhaust piston 200.
When the pressure of the exhaust piston 200 on the side close to the pressure chamber 111 is unbalanced, the gaseous working substance at the position with higher pressure can accelerate the rate of entering the exhaust chamber 112 through the communication hole 210, so that the pressure value in the above area is reduced, which is beneficial to the pressure of the exhaust piston 200 in the moving process in a real-time balanced state, prevents the exhaust piston 200 from being inclined due to unbalanced stress, and further improves the moving smoothness of the exhaust piston 200.
To achieve a sealed connection of the vent piston 200 and the vent seal bore 310, in one embodiment, as shown in fig. 3, the vent piston 200 includes a main body 220 and a screw 230, the screw 230 is connected to an end of the main body 220 near the seal assembly 300, and the screw 230 is screw-engaged with an inner wall of the vent seal bore 310.
In this way, the cover 320 may be screwed to the outside of the screw joint 230 when the screw joint 230 of the vent piston 200 protrudes out of the fitting opening 120, so as to achieve a sealed connection of the seal assembly 300 and the vent piston 200.
Further, in order to reduce the assembly difficulty of the screw joint 230 and the cover 320, in an embodiment, as shown in fig. 3, the accommodating cavity 110, the screw joint 230, the exhaust sealing hole 310 and the exhaust piston 200 are all cylindrical and coaxially arranged, the central axes of the communication hole 210 and the exhaust piston 200 are arranged at intervals, and a stress inclined plane 211 arranged at an included angle with the axis of the exhaust piston 200 is arranged in the communication hole 210, so that the acting force of the gaseous working medium on the stress inclined plane 211 can be decomposed into an axial force parallel to the axial direction of the exhaust piston 200 and a tangential force perpendicular to the radial direction of the exhaust piston 200.
It will be appreciated that the direction in which the vent piston 200 is threaded into the vent seal bore 310 is the same as the direction of rotation of the vent piston 200.
In this way, when the gaseous working medium impacts the stressed inclined plane 211, the axial force parallel to the axial direction of the exhaust piston 200 can push the exhaust piston 200 to move towards the direction close to the sealing assembly 300, the tangential force perpendicular to the circumferential direction of the exhaust piston 200 can push the exhaust piston 200 to rotate relative to the accommodating cavity 110, and when the exhaust piston 200 moves to the exhaust sealing hole 310, the rotating exhaust piston 200 can be directly screwed into the exhaust sealing hole 310, so that the assembly difficulty of the exhaust piston 200 and the cover body 320 is greatly reduced, and the assembly efficiency of the heat pipe assembly is improved.
In one embodiment, as shown in fig. 4, an end of the main body 220 facing away from the screw joint 230 is provided with a balance cone 240 coaxially disposed with the main body 220, the balance cone 240 is tapered, and the cross-sectional area of the balance cone 240 tends to decrease along a direction from an end near the screw joint 230 to an end far from the screw joint 230.
In this way, when the exhaust piston 200 moves, the balance cone 240 can effectively enlarge the stress area of the exhaust piston 200, improve the stress balance of the exhaust piston 200, and prevent the exhaust piston 200 from rolling.
Also, by this arrangement, it is possible to prevent non-condensable gas from adhering to the end of the exhaust piston 200 near the pressure chamber 111.
Further, the cross-sectional area of the balance cone 240 at one end of the body portion 220 is equal to the cross-sectional area of the body portion.
In order to reduce the difficulty in machining the communication hole 210, in an embodiment, the communication hole 210 is linear and penetrates the exhaust piston 200, and an axial direction of the communication hole 210 and an axial direction of the exhaust piston 200 are disposed at an included angle.
Specifically, the included angle between the axial direction of the communication hole 210 and the axial direction of the exhaust piston 200 is an acute angle, and further, the included angle ranges from 30 degrees to 60 degrees.
Further, in an embodiment, the plurality of communication holes 210 are uniformly distributed along the circumferential direction of the exhaust piston 200. In this way, the stress point of the exhaust piston 200 can be increased, the rotation rate of the exhaust piston 200 can be increased, and the occurrence of roll of uneven stress of the exhaust piston 200 can be prevented.
But is not limited thereto, in other embodiments, the exhaust piston 200 may also be snapped or magnetically coupled with the inner wall of the exhaust seal bore 310.
In an embodiment, as shown in fig. 3, the sealing assembly 300 includes a gasket 330 and a sealing ring 340, and the exhaust sealing hole 310 sequentially penetrates through the sealing ring 340 and the gasket 330, the heat pipe device further includes a cover 320, the exhaust sealing hole 310 extends to the cover 320 and does not penetrate through the cover 320, the screw joint 230 can be connected to the cover 320 through the exhaust sealing hole 310 located in the cover 320 in a threaded manner, and one end of the main body 220 close to the screw joint 230 is pressed against one end of the sealing ring 340 close to the main body 220, so that the sealing ring 340 and the gasket 330 are tightly clamped between the main body 220 and the cover 320.
It should be noted that the fact that the exhaust sealing hole 310 is partially penetrating through the cover 320 means that the end of the cover 320 away from the main body 220 is not provided with the exhaust sealing hole 310, that is, the end of the cover 320 away from the main body 220 is in a blocking state.
The exhaust sealing hole 310 extends to the cover 320, and the screw joint 230 can be screwed to the cover 320 through the exhaust sealing hole 310 located in the cover 320, so that the connection strength of the exhaust piston 200 is greatly improved. In addition, the exhaust sealing hole 310 does not penetrate the cover 320, so that the sealability of the exhaust sealing hole 310 is greatly improved, and the leakage of the connection gap between the sealing assembly 300 and the exhaust piston 200 is prevented.
Specifically, the cover 320 has a hexagonal shape, which is beneficial to screwing the cover 320.
Further, in an embodiment, the inner diameter of the sealing ring 340 is larger than the outer diameter of the screw joint 230, and the inner wall of the sealing ring 340 and the outer wall of the screw joint 230 are spaced apart.
In this way, the screw joint 230 is advantageously prevented from contacting the seal ring 340 during rotation, resulting in torsional deformation of the seal ring 340.
Specifically, in this embodiment, as shown in fig. 3, a protruding portion 321 is disposed at an end of the cover 320 near the main body 220, and a gasket 330 and a sealing ring 340 are sleeved outside the protruding portion 321.
In this way, the screw joint 230 and the seal 340 can be directly blocked, and the two can be prevented from contacting each other.
Further, the inner wall of the protrusion 321 is screwed with the screw joint 230, which increases the structural strength of the heat pipe device.
In one embodiment, as shown in fig. 3, the edge of the tube body 100 at the fitting opening 120 extends toward the center of the fitting opening 120 to form a flange structure 150 having a through hole 151. The sealing ring 340 is elastic material, and the sealing ring 340 includes the first circle body 341, the second circle body 342 and connect the connector 343 of the first circle body 341 and the second circle body 342, and the interval of the first circle body 341 and the second circle body 342 sets up and forms annular joint groove 344, and the sealing ring 340 can wear to locate through hole 151 through connector 343, and sealing ring 340 can pass through joint groove 344 joint in turn-ups structure 150, and the first circle body 341 and the second circle body 342 that are located joint groove 344 both sides closely paste respectively and locate the both sides of turn-ups structure 150.
It should be noted that the first ring body 341, the second ring body 342 and the connecting body 343 are integrally formed, and the sealing ring 340 is made of rubber, silicone or other elastic materials.
Further, it should be noted that the flanging structure 150 and the pipe body 100 may be an integrally formed structure or a welded structure.
So set up, improved sealing washer 340's leakproofness, and can make the both sides atress of turn-ups structure 150 balanced, prevent that turn-ups structure 150 both sides atress is uneven to take place deformation and lead to sealing failure of sealing washer 340.
In one embodiment, as shown in fig. 5 and 6, the outer circumference of the screw joint 230 is provided with a cutting surface 231 such that the cross section of the screw joint 230 is non-circular, and the shape of the through hole 151 is the same as the cross section of the screw joint 230.
In this way, by providing the cutting surface 231, the through hole 151 of the flange structure 150 can restrict the rotation of the screw joint 230, that is, the vent piston 200 will not rotate when the cap 320 is screwed to the screw joint 230.
Specifically, the number of cutting faces 231 may be one or a plurality.
In one embodiment, as shown in fig. 2, a limiting protrusion 140 is disposed in the accommodating cavity 110, and the limiting protrusion 140 protrudes from the inner wall of the accommodating cavity 110 and stops at an end of the exhaust piston 200 away from the sealing assembly 300.
By the arrangement, the space occupied by liquid working medium caused by excessive displacement of the exhaust piston 200 can be effectively avoided.
Specifically, the side wall of the tube body 100 is formed with a limit projection 140 by punching.
In an embodiment, as shown in fig. 2, the side wall of the tube body 100 is provided with a liquid level window 130, the liquid level window 130 is provided with a liquid level scale, and an operator can observe the liquid level of the working medium in the accommodating cavity 110 through the liquid level window 130, so that the working medium can be conveniently and timely supplemented into the accommodating cavity 110.
The application also provides an exhaust method, which comprises the following steps:
The liquid working medium is arranged at the bottom of the pipe body 100, and the exhaust piston 200 is arranged above the liquid working medium;
Then heating the liquid working medium to evaporate and gasify the working medium and push the exhaust piston 200 to move upwards until the exhaust piston 200 moves to the top end of the pipe body 100;
the exhaust piston 200 is sealingly mounted to the top end of the tube 100 and stops heating the working fluid.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.
Claims (10)
1. The heat pipe device is characterized by comprising a pipe body (100), an exhaust piston (200) and a sealing assembly (300), wherein the pipe body (100) is provided with an assembly port (120) and a containing cavity (110) communicated with the assembly port (120), the sealing assembly (300) is arranged at the assembly port (120), and the sealing assembly (300) is provided with an exhaust sealing hole (310) so that the containing cavity (110) can be communicated with an external space through the exhaust sealing hole (310);
The exhaust piston (200) is movably arranged in the accommodating cavity (110), and the outer periphery side of the exhaust piston (200) is in movable fit with the inner wall of the accommodating cavity (110) so as to divide the accommodating cavity (110) into a pressure cavity (111) far away from the assembly port (120) and an exhaust cavity (112) close to the assembly port (120);
Be equipped with liquid working medium in pressure chamber (111), and, when the temperature of working medium in pressure chamber (111) is higher than boiling temperature, the gasification working medium can promote exhaust piston (200) towards being close to direction of seal assembly (300) is removed, so that will noncondensable gas in exhaust chamber (112) passes through exhaust seal hole (310) release hold chamber (110), exhaust piston (200) are close to one end of seal assembly (300) can insert exhaust seal hole (310) and shutoff exhaust seal hole (310).
2. The heat pipe device according to claim 1, wherein the vent piston (200) is provided with a communication hole (210) communicating the pressure chamber (111) and the vent chamber (112), and the seal assembly (300) is capable of sealing an opening of the communication hole (210) near the vent chamber (112) when the vent piston (200) seals the vent seal hole (310).
3. The heat pipe device according to claim 2, wherein the exhaust piston (200) includes a main body portion (220) and a screw joint (230), the screw joint (230) is connected to an end of the main body portion (220) near the seal assembly (300), and the screw joint (230) is screw-engaged with an inner wall of the exhaust seal hole (310).
4. A heat pipe device according to claim 3, wherein the accommodating cavity (110), the screw joint (230), the exhaust sealing hole (310) and the exhaust piston (200) are all cylindrical and coaxially arranged, the communication hole (210) and the central shaft of the exhaust piston (200) are arranged at intervals, and a stress inclined surface (211) arranged at an included angle with the axis of the exhaust piston (200) is arranged in the communication hole (210), so that the acting force of the gaseous working substance on the stress inclined surface (211) can be decomposed into an axial force parallel to the axial direction of the exhaust piston (200) and a tangential force perpendicular to the radial direction of the exhaust piston (200).
5. The heat pipe device according to claim 4, wherein an end of the main body portion (220) facing away from the screw joint (230) is provided with a balance cone (240) coaxially provided with the main body portion (220), the balance cone (240) being tapered, and a cross-sectional area of the balance cone (240) is in a decreasing trend along a direction from an end near the screw joint (230) to an end far from the screw joint (230).
6. A heat pipe device according to claim 3, wherein the sealing assembly (300) comprises a gasket (330) and a sealing ring (340), and the exhaust sealing hole (310) penetrates through the sealing ring (340) and the gasket (330) in sequence, the heat pipe device further comprises a cover (320), the exhaust sealing hole (310) extends to the cover (320) and does not penetrate through the cover (320), the screw joint (230) can be connected to the cover (320) through the exhaust sealing hole (310) in the cover (320) in a threaded manner, and one end of the main body (220) close to the screw joint (230) is pressed against one end of the sealing ring (340) close to the main body (220) so that the sealing ring (340) and the gasket (330) are tightly clamped between the main body (220) and the cover (320).
7. The heat pipe device according to claim 6, wherein the edge of the pipe body (100) located at the assembly opening (120) extends towards the center of the assembly opening (120) to form a flange structure (150) with a through hole (151), the sealing ring (340) is made of elastic material, the sealing ring (340) comprises a first ring body (341), a second ring body (342) and a connecting body (343) connecting the first ring body (341) and the second ring body (342), the first ring body (341) and the second ring body (342) are arranged at intervals to form annular clamping grooves (344), the sealing ring (340) can be arranged through the connecting body (343) in a penetrating manner, the sealing ring (340) can be clamped in the flange structure (150) through the clamping grooves (344), and the first ring body (341) and the second ring body (342) located at two sides of the clamping grooves (344) are respectively arranged at two sides of the flange structure (150) in a tight manner.
8. The heat pipe device according to claim 7, wherein a cutting surface (231) is provided on an outer periphery of the screw joint (230) such that a cross section of the screw joint (230) is non-circular, and the through hole (151) has the same shape as a cross section of the screw joint (230).
9. The heat pipe device according to claim 2, wherein the accommodating chamber (110) is vertically disposed, and one end of the exhaust piston (200) near the pressure chamber (111) is provided with a tapered air collecting chamber, a tip of the air collecting chamber faces upward, and a tip of the air collecting chamber is communicated with the communication hole (210).
10. A method of exhausting gas for use in the manufacture of a heat pipe apparatus as claimed in any one of claims 1 to 9, the method comprising the steps of:
the liquid working medium is arranged at the bottom of the pipe body (100), and the exhaust piston (200) is arranged above the liquid working medium;
Then heating the liquid working medium to evaporate and gasify the working medium and pushing the exhaust piston (200) to move upwards until the exhaust piston (200) moves to the top end of the pipe body (100);
And sealing and installing the exhaust piston (200) at the top end of the pipe body (100), and stopping heating the working medium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310454858.4A CN116558339B (en) | 2023-04-23 | 2023-04-23 | Heat pipe device and exhaust method |
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| CN202310454858.4A CN116558339B (en) | 2023-04-23 | 2023-04-23 | Heat pipe device and exhaust method |
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| CN116558339B true CN116558339B (en) | 2024-04-16 |
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Citations (6)
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| TW201202648A (en) * | 2010-07-14 | 2012-01-16 | Hon Hai Prec Ind Co Ltd | Heat pipe manufacturing method |
| CN104321609A (en) * | 2012-05-11 | 2015-01-28 | 丹麦丹腾制冷股份公司 | Variable conductance thermo syphon |
| CN106705719A (en) * | 2016-12-04 | 2017-05-24 | 大连碧蓝节能环保科技有限公司 | Straight line pump power heat pipe |
| CN110940211A (en) * | 2019-11-14 | 2020-03-31 | 东华大学 | Method and device for improving thermal efficiency of rechargeable liquid filling rate-variable heat pipe |
| CN211527183U (en) * | 2019-11-18 | 2020-09-18 | 中山大学附属中学 | Volume-controllable heat pipe heat exchanger |
| CN113513933A (en) * | 2021-05-13 | 2021-10-19 | 华中科技大学 | Heat pipe, heat exchanger and pressure shell integrated structure and processing technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11453593B2 (en) * | 2019-04-29 | 2022-09-27 | Global Graphene Group, Inc. | Oriented graphene sheet-enhanced vapor-based heat transfer device and process for producing same |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201202648A (en) * | 2010-07-14 | 2012-01-16 | Hon Hai Prec Ind Co Ltd | Heat pipe manufacturing method |
| CN104321609A (en) * | 2012-05-11 | 2015-01-28 | 丹麦丹腾制冷股份公司 | Variable conductance thermo syphon |
| CN106705719A (en) * | 2016-12-04 | 2017-05-24 | 大连碧蓝节能环保科技有限公司 | Straight line pump power heat pipe |
| CN110940211A (en) * | 2019-11-14 | 2020-03-31 | 东华大学 | Method and device for improving thermal efficiency of rechargeable liquid filling rate-variable heat pipe |
| CN211527183U (en) * | 2019-11-18 | 2020-09-18 | 中山大学附属中学 | Volume-controllable heat pipe heat exchanger |
| CN113513933A (en) * | 2021-05-13 | 2021-10-19 | 华中科技大学 | Heat pipe, heat exchanger and pressure shell integrated structure and processing technology |
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| CN116558339A (en) | 2023-08-08 |
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