CN201407936Y - Ultrathin flat heat pipe - Google Patents
Ultrathin flat heat pipe Download PDFInfo
- Publication number
- CN201407936Y CN201407936Y CN2009200453792U CN200920045379U CN201407936Y CN 201407936 Y CN201407936 Y CN 201407936Y CN 2009200453792 U CN2009200453792 U CN 2009200453792U CN 200920045379 U CN200920045379 U CN 200920045379U CN 201407936 Y CN201407936 Y CN 201407936Y
- Authority
- CN
- China
- Prior art keywords
- flat
- heat pipe
- pipe
- flat tube
- heat
- Prior art date
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 238000009833 condensation Methods 0.000 claims abstract description 16
- 230000005494 condensation Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 abstract description 14
- 238000001704 evaporation Methods 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 210000002421 cell wall Anatomy 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
Images
Classifications
-
- 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
- F28D15/0233—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 the conduits having a particular shape, e.g. non-circular cross-section, annular
-
- 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
Landscapes
- 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 utility model discloses an ultrathin flat heat pipe, which comprises a sealing flat pipe. The working liquid is packaged in the flat pipe; one end of the flat pipe is an evaporation section, and the other end is a condensation section; the inner wall of the flat pipe is uniformly distributed with a plurality of grooves which are arranged along the axial direction around the circumferential direction; the tooth height of the groove is 0.1mm-0.2mm; a metal mesh layer is distributed at the inner side of the grooves around the circumferential direction on the evaporation section of the flat pipe; the thickness of the metal mesh layer is 0.04mm-0.1mm; and the wall thickness of a tubular shell is 0.15mm-0.3mm. By ensuring the overall thickness of the flat heat pipe to be less than or equal to 1.5mm at the same time, the heat conduction area of the heat pipe is increased, and the heat conduction rate of the heat pipe is improved, thereby improving the heat transfer performance of the heatpipe.
Description
Technical field
The utility model relates to a kind of heat-transfer device, relates in particular to a kind of ultra-thin flat hot pipe, and this ultra-thin flat hot pipe is mainly used on the less heat abstractor of volume.
Background technology
In recent years, because developing rapidly of electronic technology, electronic device high frequency, high speed and integrated circuit intensive and microminiaturized, make the caloric value of the interior electronic device of unit volume increase severely, characteristics such as hot pipe technique is efficient with it, compactness and flexibility and reliability are applicable to solve the heat dissipation problem that electronic device is derived because of performance boost.
The heat pipe that is used for notebook computer heat radiation module is a flat hot pipe, to satisfy the restriction of notebook computer inner space.Flat hot pipe commonly used is the groove heat pipe, and its structure mainly is by the metallic flat pipe of a sealing, constitutes along hydraulic fluid in this flat tube of the some tiny groove of axially offering on this flat tube inwall and packing (as pure water etc.).On the radial section of this flat tube, the cell wall of these tiny grooves is uniform being convexly equipped with in the week of flat tube inwall of dentation and makes progress.Usually one section that heat pipe is heated is called evaporator section, and one section of cooling is called condensation segment.During heat pipe work, the vaporization of being heated of hydraulic fluid in the evaporator section, the diffusion of vapor that forms is to condensation segment, the steam that diffuses to condensation segment is after this section heat release is condensed into liquid state, capillary structure along inner walls is back to evaporator section again, do action and so forth, thus heat is delivered to condensation segment and distributes from evaporator section fast.And the Heat Transfer of Heat Pipe on Heat Pipe performance is mainly stored the size decision of the vapor space that how much reaches the confession diffusion of vapor of reserving in the housing of the working solution scale of construction by evaporator section.
At present, notebook computer develops towards light, thin, short, little direction, and this just requires the heat pipe that adopted also more and more thinner, now requires the flat hot pipe integral thickness to be less than or equals 1.5mm.And the wall thickness of traditional groove thermotube shell is for being generally about 0.3mm, the groove tooth depth is about 0.25mm, after this conventional heat pipe is pressed into flat, integral thickness is many about 2.5mm～3.5mm, could guarantee to have in the thermotube shell vapor space of enough confession diffusion of vapor, otherwise, the vapor space in the thermotube shell reduces, steam is assembled the drop that forms after the condensation segment condensation makes that the vapor space further reduces between housing, the interface that causes diffusion of vapor and liquid to reflux can produce an interactional shearing force, this shearing force stops liquid to reflux to evaporator section on the one hand, hinders steam on the other hand toward the condensation segment diffusion.Because the existence of this shearing force is slowed down the circulation rate of hydraulic fluid in the heat pipe greatly, has reduced the Heat Transfer of Heat Pipe on Heat Pipe performance, the long heat pipe less for diameter, even condensed liquid occurs and can't be back to the evaporation ends heat radiation that circulates.
Therefore, how providing a kind of ultra-thin conduit of efficient heat transfer, satisfy heat radiation requirement light, thin, short, subnotebook, is those skilled in the art's contents of research emphatically.
Summary of the invention
The utility model provides a kind of ultra-thin flat hot pipe, its objective is when guaranteeing that the heat pipe integral thickness is less than or equal to 1.5mm, increases the heat conduction speed of the heat-conducting area and the lifting heat pipe of heat pipe, thereby improves the Heat Transfer of Heat Pipe on Heat Pipe performance.
For achieving the above object, the technical solution adopted in the utility model is: a kind of ultra-thin flat hot pipe, comprise a sealing flat tube, encapsulation work liquid in this flat tube, one end of this flat tube is an evaporator section, the other end is a condensation segment, and around circumferentially being evenly equipped with some grooves that are provided with vertically, it is characterized in that: the tooth depth of described groove is 0.1mm～0.2mm on this flat tube inwall; On the evaporator section of described flat tube, in the groove inboard around circumferential laying one metal mesh layer.
Related content in the technique scheme is explained as follows:
1, in the such scheme, the order number of described metal mesh layer is 100 orders～200 orders, and this metal mesh layer is the copper mesh order.
2, in the such scheme, the tooth depth of described groove is 0.12mm～0.15mm.
3, in the such scheme, the pipe thickness of described flat tube is 0.15mm～0.3mm, and the thickness of metal mesh layer is 0.04mm～0.1mm; And pipe thickness the best of flat tube is at 0.12mm～0.15mm, and wherein pipe thickness refers to the distance of the outer diametric plane of flat tube to the groove bottom land.
4, in the such scheme, be vacuum cavity in the described sealing flat tube.
5, in the such scheme, on the described flat tube inwall around circumferentially uniform groove number more than or equal to 55.
6, in the such scheme, on the evaporator section of described flat tube, around circumferential laying one metal mesh layer, refer to the inboard that metal mesh layer is laid in groove in the groove inboard.
7, in the such scheme, described hydraulic fluid is a pure water.
Design principle of the present utility model: for satisfying the heat radiation requirement of ultra-thin notebook computer, the integral thickness of the flat hot pipe of the module that is used to dispel the heat also is limited in the thickness of 1.5mm.And if the groove capillary structure only is set in flat tube, guarantee to press its integral thickness to adapt to requirement, then the pipe thickness of the tooth depth of groove and flat tube all is bound to and will reduces, because reducing of groove tooth depth, groove depth is corresponding also to be reduced, then the evaporator section of the heat pipe amount that can store hydraulic fluid also reduces, and then can not satisfy the necessary heat flux of heat pipe, promptly can't improve the Heat Transfer of Heat Pipe on Heat Pipe performance.And adopt at the compound laying one metal mesh layer of the evaporating section of heat pipe, then having improved the capillarity of evaporating section, the amount that evaporating section stores hydraulic fluid increases to some extent, thereby has satisfied the necessary heat flux of heat pipe, has improved the Heat Transfer of Heat Pipe on Heat Pipe performance.
And if (being evaporator section and condensation segment) all lays metal mesh layer in whole heat pipe, because there is certain thickness in metal mesh layer, then certainly will reduce the vapor space of heat pipe condenser section, and metal mesh layer is after heat pipe is pressed into flat and bending, can be out of shape because of being squeezed, thereby the capillary that influences whole heat pipe refluxes and the vapor space, has reduced the Heat Transfer of Heat Pipe on Heat Pipe performance on the contrary.
Though lay the vapor space that metal mesh layer also can reduce this evaporator section at evaporator section, but because of evaporator section is the perseverance section of going out that hydraulic fluid is heated and is vaporized into steam, the vapor space reduces, its steam pressure increases, and the vapor space of condensation segment is greater than evaporator section, thereby make steam easier, the circulation rate of hydraulic fluid in the heat pipe is accelerated greatly, improved the Heat Transfer of Heat Pipe on Heat Pipe performance to the condensation segment diffusion.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, because the utility model has at first reduced the tooth depth of groove and the pipe thickness of flat tube, thereby can satisfy the requirement of the ultra-thin size of heat pipe, simultaneously, at the compound again laying one metal mesh layer of the evaporator section inwall of flat hot pipe, this metal mesh layer has increased the capillarity of evaporator section and the amount that evaporator section stores hydraulic fluid, thereby satisfied the necessary heat flux of heat pipe, improved the Heat Transfer of Heat Pipe on Heat Pipe performance.
2, the utility model is simple in structure, and effect is remarkable, when guaranteeing that the flat hot pipe integral thickness is less than or equal to 1.5mm, increases the heat conduction speed of the heat-conducting area and the lifting heat pipe of heat pipe, thereby improves the Heat Transfer of Heat Pipe on Heat Pipe performance.
Description of drawings
A place enlarged diagram in accompanying drawing 5 accompanying drawings 4.
In the above accompanying drawing: 1, flat tube; 2, evaporator section; 3, condensation segment; 4, groove; 5, cell wall; 6, metal mesh layer.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment:
Shown in Fig. 3～6, a kind of ultra-thin flat hot pipe, comprise a sealing flat tube 1, encapsulation work liquid (not shown) in this flat tube 1, an end of this flat tube 1 is an evaporator section 2, the other end is a condensation segment 3, on this flat tube 1 inwall around circumferentially being evenly equipped with some grooves 4 that are provided with vertically, on the radial section of flat tube 1, as shown in Figure 4 and Figure 5, the cell wall 5 of these grooves 4 is uniform being convexly equipped with in the week of flat tube 1 inwall of dentation and makes progress.In this flat tube 1, the quantity of these cell walls 5 is at least 55.The tooth depth of described groove 4 is 0.1mm～0.2mm; On the evaporator section 2 of described flat tube 1, in groove 4 inboards around circumferential laying one metal mesh layer 6, the thickness of this metal mesh layer 6 is 0.04mm～0.1mm, the tooth depth of described groove 4 is 0.1mm～0.2mm, its best tooth depth is 0.12mm～0.15mm, like this, the formed vapor space is just enough big.The wall thickness of described tubular shell is 0.2mm～0.25mm, and tube wall also is difficult for too thin, and tube wall is too thin, and is yielding when bending.
Compound laying one metal mesh layer 6 has improved the capillarity at evaporator section 2 places at evaporator section 2 places of flat hot pipe, and the amount that evaporator section 2 places store hydraulic fluid increases to some extent, thereby has satisfied the necessary heat flux of heat pipe, has improved the Heat Transfer of Heat Pipe on Heat Pipe performance.
The utility model has at first reduced the tooth depth of groove and the thickness of flat tube tube wall, thereby can satisfy the requirement of the ultra-thin size of heat pipe, simultaneously, lay a metal mesh layer at the evaporator section inwall of flat tube, this metal mesh layer has increased the capillarity of evaporator section and the amount that evaporator section stores hydraulic fluid, thereby satisfied the necessary heat flux of heat pipe, improved the Heat Transfer of Heat Pipe on Heat Pipe performance.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (7)
1, a kind of ultra-thin flat hot pipe, comprise a sealing flat tube (1), the interior encapsulation work liquid of this flat tube (1), one end of this flat tube (1) is evaporator section (2), the other end is condensation segment (3), around circumferentially being evenly equipped with some grooves (4) that are provided with vertically, it is characterized in that: the tooth depth of described groove (4) is 0.1mm～0.2mm on this flat tube (1) inwall; On the evaporator section (2) of described flat tube (1), inboard around circumferential laying one metal mesh layer (6) at groove (4).
2, ultra-thin flat hot pipe according to claim 1 is characterized in that: the order number of described metal mesh layer (6) is 100 orders～200 orders.
3, ultra-thin flat hot pipe according to claim 1 is characterized in that: the tooth depth of described groove (4) is 0.12mm～0.15mm.
4, ultra-thin flat hot pipe according to claim 1 is characterized in that: the pipe thickness of described flat tube (1) is 0.15mm～0.3mm, and the thickness of metal mesh layer is 0.04mm～0.1mm.
5, ultra-thin flat hot pipe according to claim 4 is characterized in that: the pipe thickness of described flat tube (1) is 0.2mm～0.25mm.
6, ultra-thin flat hot pipe according to claim 1 is characterized in that: be vacuum cavity in the described sealing flat tube (1).
7, ultra-thin flat hot pipe according to claim 1 is characterized in that: count more than or equal to 55 around circumferentially uniform groove (4) on described flat tube (1) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200453792U CN201407936Y (en) | 2009-05-18 | 2009-05-18 | Ultrathin flat heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200453792U CN201407936Y (en) | 2009-05-18 | 2009-05-18 | Ultrathin flat heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407936Y true CN201407936Y (en) | 2010-02-17 |
Family
ID=41678871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200453792U Expired - Lifetime CN201407936Y (en) | 2009-05-18 | 2009-05-18 | Ultrathin flat heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407936Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017176A (en) * | 2016-07-18 | 2016-10-12 | 华南理工大学 | Ultrathin heat pipe for heat dissipation of mobile phone and manufacturing method thereof |
| CN112556468A (en) * | 2020-11-20 | 2021-03-26 | 广州大学 | One-way heat transfer pipe and processing method thereof |
| US12342920B2 (en) | 2020-06-19 | 2025-07-01 | Shenzhen Ulike Smart Electronics Co., Ltd | Depilator |
-
2009
- 2009-05-18 CN CN2009200453792U patent/CN201407936Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017176A (en) * | 2016-07-18 | 2016-10-12 | 华南理工大学 | Ultrathin heat pipe for heat dissipation of mobile phone and manufacturing method thereof |
| US12342920B2 (en) | 2020-06-19 | 2025-07-01 | Shenzhen Ulike Smart Electronics Co., Ltd | Depilator |
| CN112556468A (en) * | 2020-11-20 | 2021-03-26 | 广州大学 | One-way heat transfer pipe and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |