CN113124699A - Heat pipe structure - Google Patents
Heat pipe structure Download PDFInfo
- Publication number
- CN113124699A CN113124699A CN202110511762.8A CN202110511762A CN113124699A CN 113124699 A CN113124699 A CN 113124699A CN 202110511762 A CN202110511762 A CN 202110511762A CN 113124699 A CN113124699 A CN 113124699A
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- CN
- China
- Prior art keywords
- heat pipe
- pipe
- tube body
- working fluid
- space
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- F28D15/04—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 with tubes having a capillary structure
- F28D15/046—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 with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The present invention provides a heat pipe structure, comprising: the tube body is provided with a first end, a second end and an airtight cavity, the wall surface of the tube body is provided with at least one capillary structure layer, a working fluid is filled in the tube body, any one of the first end and the second end of the tube body is arranged in a mode of being vertical to a horizontal plane, the first end and the second end are respectively positioned at the upper end and the lower end of the tube body, which is in contact with the horizontal plane, is provided with an expansion space which is used as an ice molecule release space after the working fluid is frozen.
Description
Technical Field
The present invention relates to a heat pipe structure, and more particularly, to a heat pipe structure having a space for releasing frozen ice molecules.
Background
The traditional heat pipe has a hollow shell (pipe) body, and the capillary wick and the working fluid (water, coolant, methanol, acetone, liquid ammonia, etc.) are arranged inside the shell (pipe), the hollow shell (pipe) body is mostly made of copper, aluminum, etc. materials at present, because the working fluid inside the hollow shell (pipe) body generates a phase-change latent heat mechanism to conduct heat.
However, the heat pipe made of Copper and Water (Copper tube + Pure Water) is currently used in the field of heat dissipation of electronic products, and because Copper has better heat conductivity, the working liquid has better latent heat, and can be used in most normal environments; however, it still suffers from the limitation of application conditions, such as outdoor (5G, 6G base station, outdoor photovoltaic power IGBT heat dissipation, vehicle or any outdoor application requiring heat dissipation), icing problem of working fluid at 0 ℃ of ambient temperature, and influence of icing molecular force on structural strength.
When the heat pipe level sets up, and run into working fluid and produce the phenomenon of icing, the ice molecule takes place the inflation of inflation extrusion heat pipe wall, make the heat pipe take place to warp, another, if set up the application with the heat pipe with upright mode, working fluid receives the bottom that gravity influences and gathers in the heat pipe lower extreme, work environment is less than the inside working fluid of heat pipe when 0 degree icing again, and the ice molecule will produce the inflation and then prop the inflation with this heat pipe wall, will prop the explosion heat pipe when serious, make the heat pipe produce and break and lose the vacuum nature and make working fluid produce the seepage.
Therefore, it is the first objective of those skilled in the art to provide a method for properly preventing the internal working fluid from freezing at low temperature, and further damaging the vapor-liquid circulation inside the heat pipe.
Disclosure of Invention
Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a heat pipe structure which solves the problem that when a heat pipe is vertically installed (under the influence of gravity), the working fluid filled in the heat pipe freezes at zero degrees, the molecular release force of ice at the lowest portion expands the lowest portion of the pipe body, and further, an ice molecular release force space is additionally provided.
To achieve the above object, the present invention provides a heat pipe structure, comprising:
the tube body is provided with a first end, a second end and an airtight cavity, the wall surface of the tube body is provided with at least one capillary structure layer, the airtight cavity is filled with working fluid, any one of the first end and the second end of the tube body is arranged in a vertical mode with a horizontal plane, the first end and the second end are respectively positioned at the upper end and the lower end of the tube body, and one end of the tube body, which is in contact with the horizontal plane, is provided with an expansion space which is used as an ice molecule release space after the working fluid is frozen.
The heat pipe structure, wherein: the pipe body is provided with the expansion space which is the lower end, and the volume ratio of the expansion space is larger than that of other parts of the pipe body.
The heat pipe structure, wherein: the expansion space is vertically and upwards protruded from the pipe wall of the pipe body to form a pipe expanding space.
The heat pipe structure, wherein: the expansion space horizontally protrudes from any one of the left side or the right side of the pipe wall of the pipe body to form a pipe expanding space.
The heat pipe structure, wherein: the tube body is made of any one of aluminum, copper, stainless steel and titanium.
The heat pipe structure, wherein: the working fluid is any one of water, methanol and acetone.
When the heat pipe is vertically arranged, the working fluid influenced by gravity is gathered at the lower end of the heat pipe, the working fluid filled in the heat pipe can be frozen when the working environment is lower than zero degree, the environment temperature changes from-40 ℃ to 100 ℃ in an actual working scene, and the molecular release force of ice at one end (the lower end of the heat pipe) below the heat pipe in the most vertical direction can cause the bottommost part of the heat pipe to swell due to different physical densities of the ice water when the internal working fluid is frozen, so that the expansion space for preventing the swelling of the heat pipe body is arranged as the ice molecular release space after the working fluid is frozen.
Brief description of the drawings
FIG. 1 is a perspective view of a first embodiment of a heat pipe structure of the present invention;
fig. 2 is a sectional view of a first embodiment of the heat pipe structure of the present invention.
Description of reference numerals: a pipe body 1; a first end 11; a second end 12; a gas-tight chamber 13; an expansion space 14; a capillary structure layer 2; a working fluid 3.
Detailed Description
The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.
Referring to fig. 1 and fig. 2, which are a perspective view and a cross-sectional view of a heat pipe structure according to a first embodiment of the present invention, as shown in the drawings, the heat pipe structure of the present invention includes: a tube body 1;
the tube 1 has a first end 11 and a second end 12 and an airtight chamber 13, the wall of the tube 1 has at least one capillary structure layer 2 and is filled with a working fluid 3, the working fluid 3 is any one of water, refrigerant, methanol and acetone, the capillary structure layer 2 can be sintered powder or grooves or woven meshes or a combination thereof, the pipe body 1 is any one of a round pipe, a flat pipe and a square pipe, the material of the pipe body 1 is any one of aluminum, copper, stainless steel and titanium, any one of the first end 11 and the second end 12 of the tube body 1 is arranged in a way of being vertical to a horizontal plane, that is, the tube 1 is vertically disposed, the first and second ends 11 and 12 are respectively located at the upper and lower ends of the tube 1, the end of the pipe body 1 contacting the horizontal surface has an expansion space 14 as an ice molecule releasing space after the working fluid 3 is frozen.
The volume ratio of the part of the pipe body 1 provided with the expansion space 14 is larger than that of other parts of the pipe body 1, and the expansion space 14 is formed by vertically and upwards protruding the pipe wall of the pipe body or is formed by horizontally and upwards protruding any one of the left side or the right side of the pipe wall of the pipe body.
The invention solves the problem that when the heat pipe is vertically used, the working fluid is gathered at the lower end, and when the ambient temperature is lower than 0 ℃, the working fluid at the lower end in the heat pipe is frozen, and the frozen part of the heat pipe expands, even bursts, so that the expansion space is arranged at the lower end of the heat pipe when the heat pipe is vertically used as the ice molecule release space after the working fluid is frozen, and the expansion space can be connected with the two ends of the heat pipe, or the expansion space is correspondingly arranged at each position of the heat pipe according to different use states.
Claims (6)
1. A heat pipe structure, comprising:
the tube body is provided with a first end, a second end and an airtight cavity, the wall surface of the tube body is provided with at least one capillary structure layer, the airtight cavity is filled with working fluid, any one of the first end and the second end of the tube body is arranged in a vertical mode with a horizontal plane, the first end and the second end are respectively positioned at the upper end and the lower end of the tube body, and one end of the tube body, which is in contact with the horizontal plane, is provided with an expansion space which is used as an ice molecule release space after the working fluid is frozen.
2. A heat pipe structure as defined in claim 1, wherein: the pipe body is provided with the expansion space which is the lower end, and the volume ratio of the expansion space is larger than that of other parts of the pipe body.
3. A heat pipe structure as defined in claim 1, wherein: the expansion space is vertically and upwards protruded from the pipe wall of the pipe body to form a pipe expanding space.
4. A heat pipe structure as defined in claim 1, wherein: the expansion space horizontally protrudes from any one of the left side or the right side of the pipe wall of the pipe body to form a pipe expanding space.
5. A heat pipe structure as defined in claim 1, wherein: the tube body is made of any one of aluminum, copper, stainless steel and titanium.
6. A heat pipe structure as defined in claim 1, wherein: the working fluid is any one of water, methanol and acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511762.8A CN113124699A (en) | 2021-05-11 | 2021-05-11 | Heat pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511762.8A CN113124699A (en) | 2021-05-11 | 2021-05-11 | Heat pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113124699A true CN113124699A (en) | 2021-07-16 |
Family
ID=76781672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110511762.8A Pending CN113124699A (en) | 2021-05-11 | 2021-05-11 | Heat pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113124699A (en) |
-
2021
- 2021-05-11 CN CN202110511762.8A patent/CN113124699A/en active Pending
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |