CN2829090Y - Slotted cylindrical heat pipe - Google Patents
Slotted cylindrical heat pipe Download PDFInfo
- Publication number
- CN2829090Y CN2829090Y CN 200520013758 CN200520013758U CN2829090Y CN 2829090 Y CN2829090 Y CN 2829090Y CN 200520013758 CN200520013758 CN 200520013758 CN 200520013758 U CN200520013758 U CN 200520013758U CN 2829090 Y CN2829090 Y CN 2829090Y
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- CN
- China
- Prior art keywords
- heat
- top cover
- capillary
- type heat
- pipe
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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.)
- Expired - Lifetime
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Abstract
The utility model relates to a slotted cylindrical heat pipe. An exhaust pipe, a top cover, a pipe body and a bottom plate form a sealing cavity body. The inner part of the sealing cavity body is vacuum. The lower end of the pipe body is provided with the bottom plate. The upper end of the pipe body is provided with a capillary cover plate on which the top cover is arranged. The exhaust pipe is arranged on the top cover. The surface of the inner wall of the pipe body and the inner surface of the bottom plate are respectively provided with a sintered layer having a porous capillary structure. The sintered layer is communicated with the capillary cover plate at the upper end of the pipe body to form a continuous working liquid cycle channel. The inner parts of the sintered layer and the capillary cover plate are adsorbed with working liquid. The utility model has the advantages that the heat conducting velocity is fast, the heat transferring capability is strong, and the temperature of the upper part of the pipe body and the temperature of the lower part of the pipe body are homogeneous; the heat transferring area is enlarged, and the evaporating heat transferring is intensified by the sintered layer on the bottom plate in the slotted cylindrical heat pipe; the stability of the evaporating condensation phase change process is increased, when the slotted cylindrical heat pipe works, the temperature fluctuation is decreased; the heat radiation capability is strong, the heat resistance is little, the weight is light, and the requirements of an electronic element that the power of a radiator is large, the volume is small and the weight is light can be satisfied.
Description
Technical field
The utility model relates to a kind of heat pipe, the fluting column-type heat tube that especially a kind of end face that is used for heat-generating electronic elements (comprising PC CPU) is heated.
Background technology
Along with surprising speed development and the miniaturization of electronic products such as computer, communication, photoelectric lighting LED with " Moore's Law (Moor ' s Law) " geometric progression, the Heat-treatment Problem of deriving relatively also becomes to increasing, and density of heat flow rate also promotes thereupon.How to solve this heat dissipation problem in limited space, guarantee the normal running of electronic product, be that countries in the world heat radiation module producer and related scientific research mechanism strengthen the scientific research input, actively seek and research and develop new and effective, as to be fit to electronic product development need of future generation radiating subassembly.
Heat pipe is a kind of small amount of liquid working medium of injecting in the cavity of sealing, utilizes evaporation of liquid and condensation to come quick conductive, is the existing the fastest heat transfer element of heat conduction.With the heat radiation module that heat pipe is made as high-performance heat transfer components, begun to enter heat-generating electronic elements (comprising computer CPU) heat radiation module market, and progressively substituted existing entity heat radiation module.Heat pipe heat radiation module commonly used is provided with the fin that plurality of layers stacks at the L shaped or U-shaped small heat pipe of welding more than one on the substrate on small heat pipe.Direct and the substrate contacts of heat-generating electronic elements is given heat pipe by substrate with heat conduction during use, and heat pipe is passed to fin with heat again, in the side of fin fan is installed, and fan forces a plurality of fin of blows air over that heat is distributed in the surrounding air.
Because small heat pipe and substrate weld together, the heat that electronic component produces at first conducts to substrate, gives heat pipe with heat conduction again by substrate, increased thermal resistance, and the difficulty of processing of dress fin increases on many small heat pipes, and cost is higher, has influenced the large-scale application of this heat-pipe radiator.
Summary of the invention
In order to overcome the deficiency of existing heat-pipe radiator, the utility model provides a kind of fluting column-type heat tube, an end face (column-type heat tube base plate) of this fluting column-type heat tube is a heating surface, directly contact with heat-generating electronic elements, the whole tube wall face of fluting column-type heat tube is a radiating surface, heat sink assembly can be set thereon constitute the heat radiation module, reduces thermal resistance, increases area of dissipation, improve radiating efficiency and heat radiation power, alleviate the weight of radiator.
The utility model solves the technical scheme that its technical problem adopts: this fluting column-type heat tube comprises blast pipe, top cover, capillary cover board, capillary structure sinter layer, body, base plate, by blast pipe, top cover, body, base plate constitutes seal chamber, and inside is vacuum state; The lower end of body is provided with base plate, and the upper end of body is provided with step, and capillary cover board is housed on step, is provided with top cover on capillary cover board, and top cover is provided with blast pipe, and blast pipe is sealing state; Inboard wall of tube body face and plate inner surface are provided with the sinter layer of porous capillary structure, are communicated with the capillary cover board of body upper end to constitute continuous hydraulic fluid circulation canal, are adsorbed with hydraulic fluid in sinter layer and capillary cover board.
The effect that the utility model is useful is: the base plate of fluting column-type heat tube directly contacts heat absorption as heating surface with heat-generating electronic elements, has reduced the welding of prior art heat pipe and substrate and the thermal conduction resistance of increase; Outer surface of tube body and heat sink assembly are combined into the heat radiation module, owing to adopt cord tissue, have increased heat pipe and heat sink assembly bonded area, have reduced heat radiator thermal resistance.The fluting column-type heat tube is inner by hydraulic fluid evaporation and condensation phase-change heat transfer, and heat conduction speed is fast, heat-transfer capability big, the temperature up and down of body is even.Sinter layer on the fluting column-type heat tube internal backplane has increased heat transfer area, has strengthened evaporation heat transfer; Inboard wall of tube body face sinter layer increases the condensation heat transfer area, has strengthened the condensation of steam; Sinter layer on sinter layer, the inboard wall of tube body face, body upper end capillary cover board constitute and are interconnected on the plate inner surface, constitute closed capillary structure connected component, the continuous unobstructed good circulation canal of hydraulic fluid is provided, increased the stability of evaporative condenser phase transition process, the temperature fluctuation when having reduced the work of fluting column-type heat tube.Therefore the heat radiation module that utilizes this invention to make, heat-sinking capability is big, thermal resistance is little, in light weight, can satisfy that electronic component is big to radiator power, volume is little, lightweight demand.
Description of drawings
Fig. 1 is the utility model perspective exploded view;
Fig. 2 is the utility model body, base plate, sinter layer schematic perspective view;
Fig. 3 is the utility model body, base plate, sinter layer schematic top plan view;
Fig. 4 is the utility model body, base plate, sinter layer sectional structure schematic diagram;
Fig. 5 is the structural representation of the plane top cover of the utility model;
Fig. 6 is the structural representation of the utility model conical protrusions top cover;
Fig. 7 is the structural representation of the curved inner concavity top cover of the utility model.
Description of reference numerals: blast pipe 1, top cover 2, step 2-1, through hole 2-2, capillary cover board 3, sinter layer 4, body 5, step 5-1, raised line 5-2, base plate 6.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, this fluting column-type heat tube comprises blast pipe 1, top cover 2, capillary cover board 3, sinter layer 4, body 5, base plate 6.This fluting column-type heat tube constitutes seal chamber by blast pipe 1, top cover 2, body 5, base plate 6, and inside is vacuum state; The lower end of body 5 is provided with base plate 6, base plate 6 is one-body molded with body 5, or two weld together, and base plate 6 is identical with the external diameter of body 5, or base plate 6 is greater than the external diameter of body 5, and its shape is circular or square or triangle or rhombus or other irregular shape.The upper end of body 5 is provided with step 5-1, and capillary cover board 3 is housed on step 5-1, and capillary cover board 3 is by the silk screen capillary structure, or copper powder sintering capillary structure, or the fiber hair fine texture, or other capillary structure materials with certain hair suction constitute.On capillary cover board 3, be provided with top cover 2, top cover 2 upper ends are provided with step 2-1, the external diameter of top cover 2 matches with the internal diameter of body 5 upper end step 5-1, and the height of top cover 2 matches with the height of body 5 upper end step 5-1, makes installation back header 2 height concordant with body 5 upper surfaces; The internal face of the step 2-1 of top cover 2 upper ends and body 5 upper end step 5-1 forms cannelure, is used for placing the cored solder wire ring, and as top cover 2 tank of braze during with body 5 high-temperature soldering.Top cover 2 is provided with through hole 2-2, inserts blast pipe 1 in the through hole 2, by welding manner blast pipe 1 and top cover 2 is welded together.In the sinter layer 4 of fluting column-type heat tube, inject hydraulic fluid by blast pipe 1, will slot after the air extraction of column-type heat tube inside, again blast pipe 1 usefulness clamp and welding manner are sealed by blast pipe 1.Body 5 internal faces and base plate 6 inner surfaces are provided with certain thickness porous capillary structure sinter layer 4, sinter layer 4 is counted the copper powder high temperature sintering by certain order and is formed, be communicated with the hydraulic fluid circulation canal that constitutes closure with the capillary cover board 3 of body 5 upper ends, in sinter layer 4 and capillary cover board 3, be adsorbed with hydraulic fluid.The outside wall surface of body 5 is provided with a plurality of raised line 5-2, and raised line 5-2 and body 5 are one-body molded.The shape of raised line 5-2 is semicircle or square or triangle or trapezoidal or other shape.Raised line 5-2 is axially uniform along body 5 outer walls, or is radial equipartition, or in spiral distribution.
Referring to Fig. 5, Fig. 6, Fig. 7, top cover 2 upper ends are provided with step 2-1, form cannelure with the step 5-1 internal face of body 5, are used for placing the cored solder wire ring, and as top cover 2 tank of braze during with body 5 high-temperature soldering.Top cover 2 also is provided with through hole 2-2, and blast pipe 1 inserts in the through hole 2 and with top cover 2 and welds together.The annulus projection that is shaped as the increase bearing strength of top cover, or plane, or curved concave shape, or be conical protrusions.
During use, the base plate of fluting column-type heat tube is as heating surface, directly contact with heat-generating electronic elements, outer surface of tube body is a radiating surface, combine with heat sink assembly, the fin composition heat radiation module that plurality of layers stacks normally is set, parallel from the side each fin surface of blowing over of wind on the tube wall face; Or body is contained in the heat radiation module of forming in the through hole that is provided with a plurality of radial fin all around, and wind is blown over radial fin surface downwards from the top.Heat-generating electronic elements is passed to heat the base plate of fluting column-type heat tube, hydraulic fluid in the plate inner surface sinter layer absorbs heat and evaporates and become steam, steam is condensed into liquid in the heat release of inboard wall of tube body face, heat is passed to and the close-fitting heat sink assembly of body, be dispersed in the surrounding environment by wind again.In the steam heat release of inboard wall of tube body face and the liquid of condensation in sinter layer and capillary cover board in, turn back to plate inner surface by its capillary force that provides, to replenish the hydraulic fluid that reduces because of evaporation on the base plate, thereby guarantee that working media continuously evaporates and condensation cycle, the heat that heat-generating electronic elements is produced is passed to heat sink assembly fast continuously, is dispersed in the surrounding environment again.Because the utility model utilizes the principle of evaporative condenser phase-change heat transfer to realize heat conduction, so rate of heat transfer is fast, heat-transfer capability is big, and volume is little, and the utility model is the hollow sealing cavity body structure, and is in light weight; Tube wall face of the present utility model is provided with raised line, increased contact area with heat sink assembly, reduced thermal resistance, therefore the heat radiation module of being made up of this high-performance heat transfer components of the utility model can satisfy that heat-generating electronic elements is big to radiator heat-dissipation power, volume is little, the requirement of in light weight, stable performance.
Claims (9)
1, a kind of fluting column-type heat tube, comprise blast pipe (1), top cover (2), capillary cover board (3), sinter layer (4), body (5), base plate (6), it is characterized in that: constitute seal chamber by blast pipe (1), top cover (2), body (5), base plate (6), inside is vacuum state; The lower end of body (5) is provided with base plate (6), the upper end of body (5) is provided with step (5-1), and capillary cover board (3) is housed on step (5-1), is provided with top cover (2) on capillary cover board (3), top cover (2) is provided with blast pipe (1), and blast pipe (1) is sealing state; Body (5) internal face and base plate (6) inner surface are provided with the sinter layer (4) of porous capillary structure, are communicated with the capillary cover board (3) of body (5) upper end to constitute the hydraulic fluid circulation canal, are adsorbed with hydraulic fluid in sinter layer (4) and capillary cover board (3).
2, fluting column-type heat tube according to claim 1, it is characterized in that: described sinter layer (4) is that the fine copper powder is once sintered on body (5) internal face and base plate (6) inner surface through high temperature, sinter layer (4) is communicated with the capillary cover board (3) of body (5) upper end, constitute closed capillary structure connected component, the circulation canal of hydraulic fluid is provided.
3, fluting column-type heat tube according to claim 1 is characterized in that: the upper end of described body (5) is provided with step (5-1).
4, fluting column-type heat tube according to claim 1 is characterized in that: the outer wall of described body (5) is provided with a plurality of raised lines (5-2), and raised line (5-2) is one-body molded with body (5); The shape of raised line (5-2) is semicircle, square, triangle or trapezoidal.
5, according to claim 1,4 described fluting column-type heat tubes, it is characterized in that: described raised line (5-2) is along the shape distribution in the shape of a spiral of body (5) outer wall.
6, according to claim 1,4 described fluting column-type heat tubes, it is characterized in that: described raised line (5-2) is axial distribution along body (5) outer wall.
7, according to claim 1,4 described fluting column-type heat tubes, it is characterized in that: described raised line (5-2) is radial distribution along body (5) outer wall.
8, fluting column-type heat tube according to claim 1, it is characterized in that: described top cover (2) upper end is provided with step (2-1), the external diameter of top cover (2) matches with the internal diameter of body (5) upper end step (5-1), the height of top cover (2) matches with the height of body (5) upper end step (5-1), and the step (2-1) of top cover (2) upper end forms cannelure with the internal face of body (5) upper end step (5-1); Top cover (2) is provided with through hole (2-2), and through hole (2) middle insertion blast pipe (1) also welds together.
9, fluting column-type heat tube according to claim 1 is characterized in that: described capillary cover board (3) is by the silk screen capillary structure, or copper powder sintering capillary structure, or the fiber hair fine texture constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520013758 CN2829090Y (en) | 2005-07-30 | 2005-07-30 | Slotted cylindrical heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520013758 CN2829090Y (en) | 2005-07-30 | 2005-07-30 | Slotted cylindrical heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2829090Y true CN2829090Y (en) | 2006-10-18 |
Family
ID=37080641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520013758 Expired - Lifetime CN2829090Y (en) | 2005-07-30 | 2005-07-30 | Slotted cylindrical heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2829090Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360888C (en) * | 2005-07-30 | 2008-01-09 | 嘉善华昇电子热传科技有限公司 | Cylindrical heat pipe |
| CN107087374A (en) * | 2017-02-15 | 2017-08-22 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe and its fluid injection method for exhausting |
| CN108463094A (en) * | 2017-02-15 | 2018-08-28 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe of setting compensated chamber |
| CN110953909A (en) * | 2019-12-12 | 2020-04-03 | 中船重工（上海）新能源有限公司 | Manufacturing process of annular heat accumulator and annular heat accumulator |
| CN110958814A (en) * | 2019-12-09 | 2020-04-03 | 华南理工大学 | Flexible phase-change heat transfer cooler for server |
| CN111867322A (en) * | 2020-06-08 | 2020-10-30 | 广州大学 | Fin radiator |
-
2005
- 2005-07-30 CN CN 200520013758 patent/CN2829090Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100360888C (en) * | 2005-07-30 | 2008-01-09 | 嘉善华昇电子热传科技有限公司 | Cylindrical heat pipe |
| CN107087374A (en) * | 2017-02-15 | 2017-08-22 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe and its fluid injection method for exhausting |
| CN107087374B (en) * | 2017-02-15 | 2018-04-13 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe and its fluid injection method for exhausting |
| CN108444320A (en) * | 2017-02-15 | 2018-08-24 | 山东大学 | A kind of jet chimney width is more than the flat-plate minitype loop circuit heat pipe of fluid pipeline width |
| CN108463094A (en) * | 2017-02-15 | 2018-08-28 | 山东大学 | A kind of flat-plate minitype loop circuit heat pipe of setting compensated chamber |
| CN108444320B (en) * | 2017-02-15 | 2019-03-29 | 山东大学 | A kind of jet chimney width is greater than the flat-plate minitype loop circuit heat pipe of fluid pipeline width |
| CN110958814A (en) * | 2019-12-09 | 2020-04-03 | 华南理工大学 | Flexible phase-change heat transfer cooler for server |
| CN110958814B (en) * | 2019-12-09 | 2024-05-03 | 广州智冷节能科技有限公司 | Flexible phase-change heat transfer cooler for server |
| CN110953909A (en) * | 2019-12-12 | 2020-04-03 | 中船重工（上海）新能源有限公司 | Manufacturing process of annular heat accumulator and annular heat accumulator |
| CN111867322A (en) * | 2020-06-08 | 2020-10-30 | 广州大学 | Fin radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080109 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |