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CN100383960C - Heat pipe - Google Patents

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Publication number
CN100383960C
CN100383960C CNB2004100273645A CN200410027364A CN100383960C CN 100383960 C CN100383960 C CN 100383960C CN B2004100273645 A CNB2004100273645 A CN B2004100273645A CN 200410027364 A CN200410027364 A CN 200410027364A CN 100383960 C CN100383960 C CN 100383960C
Authority
CN
China
Prior art keywords
pedestal
heat pipe
diaphragm
mentioned
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 - Fee Related
Application number
CNB2004100273645A
Other languages
Chinese (zh)
Other versions
CN1700455A (en
Inventor
吕昌岳
陈杰良
余泰成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Original Assignee
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hongfujin Precision Industry Shenzhen Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Hongfujin Precision Industry Shenzhen Co Ltd
Priority to CNB2004100273645A priority Critical patent/CN100383960C/en
Priority to US11/014,427 priority patent/US20050257916A1/en
Publication of CN1700455A publication Critical patent/CN1700455A/en
Application granted granted Critical
Publication of CN100383960C publication Critical patent/CN100383960C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
    • H01L23/427—Cooling by change of state, e.g. use of heat pipes
    • 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
    • F28D15/06—Control arrangements therefor
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The present invention relates to a thermal pipe. The present invention comprises a pipe body, wherein working liquid is arranged in the pipe body; one end of the pipe body is a heat absorption end, and the other end is a heat release end; a pump body with the variable volume is arranged in one tail end of the pipe body; an electromagnetic switch is arranged outside the pipe body near the tail end of the pipe body; the pump body comprises a magnetic film sheet; the electromagnetic switch generates a magnetic field, and the magnetic field drives the magnetic film sheet to move, so the volume in the pump body is changed. The working liquid is driven to move through the volume variation of the cavity in the pump body, so the present invention can work at a low temperature, the working liquid flowing motive power can be increased, and the present invention has good radiation effect.

Description

Heat pipe
[technical field]
The invention relates to a kind of heat pipe, refer in particular to a kind of heat pipe that is applied to electronic element radiating.
[background technology]
Along with the constantly development of electronic information industry, electronic component running frequency and speed are also in continuous lifting.The heat that high-frequency high-speed will make electronic component produce is more and more, and temperature is also more and more higher, and how the heat with electronic component distributes, and to guarantee its normal operation, is the problem of industry in research always.Traditional radiating mode is the radiator conduction heat that relies on metal material merely, because the coefficient of heat conduction of metal is limited, causes the amount of thermal conduction of radiator under unit interval, unit volume also limited.Traditional simple metal radiator heat-dissipation mode can not satisfy the radiating requirements of golf calorific value electronic component.
Technology personage heat pipe commonly used is an electronic element radiating in the industry at present, and temperature remained unchanged when heat pipe utilized liquid to change between the vapour-liquid binary states, absorbs simultaneously or the principle of emitting big calorimetric is fallen the heat dissipation of electronic component generation.Figure 1 shows that known heat pipe structure schematic diagram, heat pipe 120 comprises a sealing low pressure tubular shell 121, is provided with capillary structure 122 in this housing 121 and is filled with an amount of hydraulic fluid 123.Heat pipe 120 1 ends are evaporation section 130, and the other end is a condensation segment 132, can arrange adiabatic section 131 according to need of work two sections centres.Hydraulic fluid 123 carburation by evaporations when heat pipe 120 evaporation sections 130 are heated in the capillary structure 122, steam condenses into liquid after condensation segment 132 is emitted heat flowing under the small pressure reduction, liquid is back to evaporation section 130 under capillary structure 122 capillary force effects, thereby makes heat reach condensation segment 132 rapidly by heat pipe 120 evaporation sections 130.Heat pipe 120 utilizes the vapour of hydraulic fluid 123, liquid two phase change a large amount of heats can be transmitted at a distance by its less sectional area, and thermal resistance is less, have good isothermal performance and high heat-conducting property, compare with metals such as copper, silver, aluminium, the heat pipe 120 of Unit Weight can transmit the heat of several magnitude.This heat pipe also has its weak point, heat pipe transmits heat by the phase change of hydraulic fluid, so heat pipe has certain initial working temperature, the initial working temperature of general heat pipe is about about 30～40 degree, when heat pipe does not reach uniform temperature, hydraulic fluid in it can not produce phase change and transmit heat, thereby the evaporation ends at heat pipe causes the cumulative effect of heat that heater element is dispelled the heat, for improving the boiling point that initial temperature that heat pipe need reduce heat pipe to the radiating effect of heater element promptly reduces hydraulic fluid, can be under the certain condition of hydraulic fluid by the vacuum degree in the raising heat pipe to reduce the boiling point of hydraulic fluid, but the material of the vacuum degree opposite heat tube in the raising heat pipe, the leak rate of heat pipe and structural strength thereof etc. have high requirement, and it is the production cost height, thereby and impracticable.And heat pipe relies on the capillary force of its capillary structure to provide mobile power for hydraulic fluid, the heat that produces along with heater element constantly increases sharply, it is mobile that capillary structure can not provide enough big capillary force to drive hydraulic fluid, cause the generation of the various heat transport limitations of heat pipe, thereby influence the heat conductivility of heat pipe.The mobilization dynamic how former initial working temperature that how to reduce heat pipe promptly makes heat pipe can work and how improve hydraulic fluid at a lower temperature is the urgent problem that further promotes properties of hot pipe.
[summary of the invention]
The object of the present invention is to provide a kind of can work at a lower temperature, and can increase the heat pipe of hydraulic fluid mobilization dynamic.
The objective of the invention is to be achieved through the following technical solutions: heat pipe of the present invention comprises that one is equipped with the body of hydraulic fluid, and this body one end is a heat absorbing end, and the other end is a release end of heat; Wherein be provided with the pump housing of a variable volume in this body one end, the outer end near above-mentioned body of this body is provided with electromagnetic switch, and this pump housing comprises a magnetic diaphragm, and this electromagnetic switch produces magnetic field, this field drives magnetic motion of membrane changes the volume in the pump housing.
Compare with known techniques, heat pipe of the present invention comprises a pump housing, variation by pump housing volume drives the hydraulic fluid motion, thus heat pipe of the present invention when heat absorbing end reaches the hydraulic fluid boiling point, just can not work, thereby avoid heat to accumulate the radiating effect of lifting to the element that is cooled in heat absorbing end; Simultaneously, heat pipe of the present invention utilizes the variation of pump housing volume to drive hydraulic fluid, can provide bigger power to make the hydraulic fluid shuttling movement, thereby can greatly improve the radiating effect of heat pipe.
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
[description of drawings]
Fig. 1 is known heat pipe structure schematic diagram.
Fig. 2 is the working state schematic representation of heat pipe first embodiment of the present invention.
Fig. 3 is the working state schematic representation at heat pipe following a moment among Fig. 2.
Fig. 4 is the structural representation of heat pipe second embodiment of the present invention.
[embodiment]
Please together referring to figs. 2 to Fig. 3, heat pipe 10 of the present invention comprises an electromagnetic switch 100 and a body 200, this body 200 comprises one with the heat absorbing end 280 of electronic component 15 contact that is cooled and be positioned at body 200 1 ends and the release end of heat 270 relative with heat absorbing end 280, and it is outer near heat absorbing end 280 1 sides that above-mentioned electromagnetic switch 100 is positioned at body 200.Wherein, this body 200 comprises a housing 220, is filled in the hydraulic fluid 222 in the housing 220 and is positioned at body 200 1 ends and is fixed in a pump housing 230 that closes on heat absorbing end 280 1 ends on the housing 220.This pump housing 230 comprises a pedestal 240 and a magnetic diaphragm 246, and this pump housing 230 is fixed on the housing 220 by its pedestal 240, and this magnetic diaphragm 246 can be made by magnetic materials such as nickel iron, is fixed on the pedestal 240 by the AB on it, CD peripheral edge portion.This pedestal 240 comprises a base 241, a footstock 242 and is located between the two some diaphragms 244.Above-mentioned magnetic diaphragm 246, footstock 242 and diaphragm 244 form the cavity volume 248 of a variable volume, and on base 241, footstock 242, be respectively equipped with port 250,252,253 and 258,259,260 etc., these diaphragms 244 respectively with base 241 and footstock 242 on corresponding port 250,252,253 and 258,259,260 form unidirectional valves 254,256 and 264, thereby constitute the flow channel of hydraulic fluid 222.
Heat pipe 10 of the present invention in use, the magnetic field opposite by the Push And Release generation direction of electromagnetic switch 100 moves back and forth to drive magnetic diaphragm 246, make the volume of cavity volume 248 expand, compress between two states and change, thereby make hydraulic fluid 222 be inhaled into or discharge cavity volume 248, its detailed process such as Fig. 2 and Fig. 3.Figure 2 shows that cavity volume 248 sucks hydraulic fluid 222 states: electromagnetic switch 100 produces magnetic field makes magnetic diaphragm 246 to electromagnetic switch 100 place direction motions, thereby cause cavity volume 248 volumes to increase, make cavity volume 248 interior pressure be lower than the pressure of other parts in the body 200, unidirectional valve 254 and 256 is opened, unidirectional valve 264 is closed, thereby form two paths that cavity volume 248 is communicated with other parts in the body 200 at unidirectional valve 254 and 256 places, hydraulic fluid 222 in the heat absorbing end 280 is inhaled in the cavity volume 248 along these two paths, thereby the hydraulic fluid 222 that is cooled in the release end of heat 270 flows to the temperature that heat absorbing end 280 reduces heat absorbing end 280, when the pressure of other parts in pressure in the cavity volume 248 and the body 200 reaches balance, unidirectional valve 254 and 256 is closed, finish the imbibition process, cavity volume 248 will be discharged the hydraulic fluid in it 222.Figure 3 shows that cavity volume 248 is with the 222 discharge states of the hydraulic fluid in it: electromagnetic switch 100 is closed the opposite magnetic field of the together above-mentioned magnetic direction of generation, drive magnetic diaphragm 246 to release end of heat 270 motions, the compression of cavity volume 248 volumes diminishes, make cavity volume 248 interior pressure be higher than the pressure of other parts in the body 200, unidirectional valve 264 is opened, unidirectional valve 254 and 256 is closed, thereby form the path that cavity volume 248 is communicated with other parts in the body 200 at unidirectional valve 264 places, the hydraulic fluid 222 of heat in the cavity volume 248 is discharged from cavity volume 248 along this path and flows to release end of heat 270, make hot hydraulic fluid 222 emit the heat cooling at release end of heat 270, when the pressure of other parts in pressure in the cavity volume 248 and the body 200 reaches balance, unidirectional valve 264 is closed, finish the discharge opeing process, cavity volume 248 will suck hydraulic fluid 222 and repeat the course of work shown in Figure 2, so constantly circulation, thus make hydraulic fluid 222 reciprocating motion between body 200 release end of heat 270 and heat absorbing end 280.Baffle plate shown in the figure 243,245 and 262 has protective effect: suck or discharge in the process of hydraulic fluid 222 at cavity volume 248, can avoid impacting the damage that diaphragm 244 causes unidirectional valve 254 grades because hydraulic fluid 222 flow velocitys are too high.
Fig. 4 is heat pipe second embodiment of the present invention, and the difference of this heat pipe 10A and first embodiment is the structure of the pump housing.The pump housing 230A of this heat pipe 10A comprises a pedestal 240A and a magnetic diaphragm 246, and this pedestal 240A comprises a base 241A, a footstock 242A and is located at some diaphragm 244A between the two and is fixed on the base 241A diaphragm 244B of side in addition.Correspondingly on the base 241 be provided with some passages diaphragm 244A corresponding or 244B constitutes unidirectional valve 254A, 256A, 264A respectively with it.As the above-mentioned course of work, the Push And Release of control electromagnetic switch 100 can drive hydraulic fluid reciprocating motion between body release end of heat and heat absorbing end.Owing to be not provided with protection structures such as baffle plate 243,245 and 262 in the present embodiment, under the lower situation of hydraulic fluid 222 flow velocitys so the heat pipe 10A of present embodiment is suitable for using.
Above-mentioned for two specific embodiments of heat pipe of the present invention, but heat pipe of the present invention is not limited in this, comprise unidirectional valve and the unidirectional valve that liquid flows out that two liquid flow among above-mentioned two embodiment, the quantity of the unidirectional valve that can change the controlling liquid inflow as required, flows out and the combination of passing through to change diaphragm and pedestal, can obtain identical one-way valve structures, and magnetic diaphragm 246 can be directly fixed on the diaphragm; The size of the power of cavity volume suction or drain is relevant with the cavity volume rate of change, can adjust the flow rate of liquid that needs to obtain to it according to the heat pipe cross sectional dimensions, thus the cooling effect of control heat pipe; In addition, this pump housing can also be located at body release end of heat one side.

Claims (8)

1. heat pipe, comprise that one is equipped with the body of hydraulic fluid, body one end is a heat absorbing end, the other end is a release end of heat, it is characterized in that: be provided with the pump housing of a variable volume in this body one end, the outer end near above-mentioned body of this body is provided with electromagnetic switch, this pump housing comprises a magnetic diaphragm, this electromagnetic switch produces magnetic field, and this field drives magnetic motion of membrane changes the volume in the pump housing.
2. heat pipe as claimed in claim 1, it is characterized in that: this pump housing also comprises a pedestal, above-mentioned magnetic diaphragm is fixed on this pedestal and constitutes the cavity volume of a variable volume with pedestal, and this pedestal is provided with the unidirectional valve that unidirectional valve that at least one Control work liquid flows into and at least one Control work liquid flow out.
3. heat pipe as claimed in claim 2 is characterized in that: above-mentioned pedestal comprises some diaphragms and some ports, and the diaphragm on these pedestals is formed above-mentioned unidirectional valve with corresponding port.
4. heat pipe as claimed in claim 3 is characterized in that: also be provided with the baffle plate of avoiding hydraulic fluid directly to impact above-mentioned unidirectional valve on the pedestal of above-mentioned unidirectional valve one side.
5. heat pipe as claimed in claim 3, it is characterized in that: above-mentioned pedestal comprises a base and a footstock, the diaphragm of above-mentioned pedestal is fixed between this base and the footstock, and the magnetic diaphragm is fixed on the footstock and form the cavity volume of this variable volume with the some diaphragms between pedestal and footstock and the base.
6. heat pipe as claimed in claim 3, it is characterized in that: above-mentioned pedestal comprises a base and a footstock, the diaphragm part of above-mentioned pedestal is fixed between this base and the footstock, a part is fixed in the base opposite side, and the magnetic diaphragm is fixed on the footstock and form the cavity volume of this variable volume with the some diaphragms between pedestal and footstock and the base.
7. heat pipe as claimed in claim 3 is characterized in that: the diaphragm of above-mentioned pedestal is fixed on the pedestal, and the magnetic diaphragm is directly fixed on the diaphragm of this pedestal, forms the cavity volume of a variable volume with the diaphragm of pedestal and above-mentioned pedestal.
8. heat pipe as claimed in claim 1 is characterized in that: above-mentioned magnetic diaphragm is made by nickel iron.
CNB2004100273645A 2004-05-18 2004-05-18 Heat pipe Expired - Fee Related CN100383960C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNB2004100273645A CN100383960C (en) 2004-05-18 2004-05-18 Heat pipe
US11/014,427 US20050257916A1 (en) 2004-05-18 2004-12-17 Heat conductive pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2004100273645A CN100383960C (en) 2004-05-18 2004-05-18 Heat pipe

Publications (2)

Publication Number Publication Date
CN1700455A CN1700455A (en) 2005-11-23
CN100383960C true CN100383960C (en) 2008-04-23

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CNB2004100273645A Expired - Fee Related CN100383960C (en) 2004-05-18 2004-05-18 Heat pipe

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US (1) US20050257916A1 (en)
CN (1) CN100383960C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103427556A (en) * 2013-09-02 2013-12-04 南京磁谷科技有限公司 High-power high-speed electric machine and high-power high-speed draught fan
CN104538372B (en) * 2014-12-29 2018-05-22 华进半导体封装先导技术研发中心有限公司 Heat-radiation type package structure and preparation method thereof, heat radiating type package substrate
CN107462095A (en) * 2017-08-31 2017-12-12 南昌大学 A kind of thermal siphon of variable heat conduction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005639A (en) * 1988-03-24 1991-04-09 The United States Of America As Represented By The Secretary Of The Air Force Ferrofluid piston pump for use with heat pipes or the like
US6029742A (en) * 1994-01-26 2000-02-29 Sun Microsystems, Inc. Heat exchanger for electronic equipment
CN1371125A (en) * 2001-02-21 2002-09-25 台达电子工业股份有限公司 Heat sinks using magnetized heat transfer fluids

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Publication number Priority date Publication date Assignee Title
US5005639A (en) * 1988-03-24 1991-04-09 The United States Of America As Represented By The Secretary Of The Air Force Ferrofluid piston pump for use with heat pipes or the like
US6029742A (en) * 1994-01-26 2000-02-29 Sun Microsystems, Inc. Heat exchanger for electronic equipment
CN1371125A (en) * 2001-02-21 2002-09-25 台达电子工业股份有限公司 Heat sinks using magnetized heat transfer fluids

Also Published As

Publication number Publication date
CN1700455A (en) 2005-11-23
US20050257916A1 (en) 2005-11-24

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