CN101370370A - Heat radiation model set and its fin group - Google Patents

Heat radiation model set and its fin group Download PDF

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Publication number
CN101370370A
CN101370370A CNA2007100757007A CN200710075700A CN101370370A CN 101370370 A CN101370370 A CN 101370370A CN A2007100757007 A CNA2007100757007 A CN A2007100757007A CN 200710075700 A CN200710075700 A CN 200710075700A CN 101370370 A CN101370370 A CN 101370370A
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CN
China
Prior art keywords
fin
fins group
air outlet
length
wind side
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.)
Granted
Application number
CNA2007100757007A
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Chinese (zh)
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CN101370370B (en
Inventor
黄清白
张�杰
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.)
Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
Original Assignee
Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen 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 Hong Jun Precision Industry Co ltd, Fuzhun Precision Industry Shenzhen Co Ltd filed Critical Hong Jun Precision Industry Co ltd
Priority to CN2007100757007A priority Critical patent/CN101370370B/en
Priority to US11/955,304 priority patent/US20090044927A1/en
Publication of CN101370370A publication Critical patent/CN101370370A/en
Application granted granted Critical
Publication of CN101370370B publication Critical patent/CN101370370B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
    • 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
    • H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
    • H01L23/4006—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws
    • 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
    • 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
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
    • 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

A radiation module group comprises a centrifugal fan and fin set. The centrifugal fan comprises a rotor and a wind outlet including a wind-near side and wind-far side positioned at two ends and middle area between wind-near side and wind-far side, the fin set, disposed at wind outlet, includes several radiation sheets. The radiation sheet corresponding to wind-near side and wind-far side is longer than that in middle area to form a stepped shape on the side corresponding to centrifugal fan rotor and a linear type of other side far from centrifugal fan rotor, thus promoting utilization rate of cooling air current provided by radiation fan, enlarging contact area of radiation sheet and air current, and promoting radiation performance of whole radiation module group.

Description

Heat radiation module and fins group thereof
Technical field
The present invention relates to a kind of heat radiation module, relate in particular to a kind of heat radiation module and fins group thereof that is used for electronic element radiating.
Background technology
(central processing unit CPU) waits improving constantly of electronic component power, and heat dissipation problem more and more is subject to people's attention, and is all the more so in such as notebook computer at all kinds of portable electron devices along with central processing unit.In order to take away the heat that system produces efficiently in limited space, industry mainly adopts the heat radiation module of being made up of fin, heat pipe and radiator fan to come electronic components such as CPU are dispelled the heat at present.The heat conduction path of this mode is: the heat that CPU produces passes to fin through heat pipe, and the air-flow that is produced by the radiator fan heat that will reach fin is taken away again.
The setting parallel to each other of traditional fin is installed in the air outlet place of radiator fan, and the size of each fin all equates, forms the runner that air feed stream passes through between the per two adjacent fin.Yet the air quantity and the wind speed thereof of the air outlet everywhere of radiator fan are all different, be arranged to equirotal fin and just can't make full use of the cooling blast that radiator fan produces, and then the heat on the fin can't in time be removed, influence the heat dispersion of entire heat dissipation module.
Summary of the invention
In view of this, be necessary to provide a kind of heat radiation module and fins group thereof with preferable heat dispersion.
A kind of heat radiation module, comprise a centrifugal fan and a fins group, this centrifugal fan comprises a rotor, this centrifugal fan is provided with an air outlet, and air outlet comprises at a nearly wind side at two ends and a wind side far away and the zone line between nearly wind side and wind side far away, this fins group is located at this air outlet place and is comprised some fin, described fins group corresponding to the length of the fin of the nearly wind side of air outlet and wind side far away greater than length corresponding to the fin of the zone line of air outlet, make a side of the rotor of the corresponding centrifugal fan of fins group form the stepped distribution that fin is uneven in length, and form linear away from the opposite side of the rotor of centrifugal fan.
A kind of fins group comprises some fin, and described fins group is positioned at the length of fin at two ends greater than the length of the fin that is positioned at zone line, makes fins group form the stepped distribution that fin is uneven in length in a side, and forms linear in opposite side.
Compared with prior art, because the air quantity and the different fin that different length is set everywhere of wind speed of corresponding air outlet in this heat radiation module, can make full use of the cooling blast that radiator fan provides, and increase the contact area of fin and air-flow, effectively improve the heat dispersion of entire heat dissipation module.
Description of drawings
With reference to the accompanying drawings, in conjunction with the embodiments the present invention is further described.
Fig. 1 is the dispel the heat decomposing schematic representation of module first embodiment of the present invention.
Fig. 2 is the assembly drawing of heat radiation module shown in Figure 1.
Fig. 3 is the assembling schematic diagram after heat radiation module shown in Figure 2 is removed the loam cake of centrifugal fan.
Fig. 4 removes assembling schematic diagram behind the loam cake of centrifugal fan for the present invention module second embodiment that dispels the heat.
Embodiment
Fig. 1 is to Figure 3 shows that the present invention's wherein preferred embodiment of module of dispelling the heat, and this heat radiation module is used for being installed in portable electron devices such as notebook computer, with heat-generating electronic elements such as the heat radiations such as central processing unit, video card chip that are used for to its inside.This heat radiation module comprises a centrifugal fan 20, a fins group 30, a heat pipe 40 and a heat-collecting block 50.
Centrifugal fan 20 comprises that a housing 21 and has the rotor 22 of some flabellums, and this rotor 22 is installed in this housing 21 and can does around its axis and rotates counterclockwise.This housing 21 comprises a base 212 and is located at a loam cake 214 on this base 212, and this loam cake 214 is a plate body, and its central authorities are provided with the air inlet 23 of a circle, enter in the centrifugal fan 20 for outside air.The side direction of this housing 21 offers a rectangular air outlet 24, and the two ends of this air outlet 24 form a nearly wind side 24a and a wind side 24b far away respectively.During centrifugal fan 20 runnings, rotor 22 is done around axis and is rotated counterclockwise, and when the air-flow that centrifugal fan 20 is produced outwards flowed out through air outlet 24, air-flow arrived the nearly wind side 24a of air outlet 24 earlier, arrived the wind side 24b far away of air outlet 24 again.By simulation analysis as can be known, the nearly wind side 24a of the air outlet 24 of centrifugal fan and wind side 24b far away account for the flow of air-flow that zone is flow through of air outlet 24 width 1/2 far above half of air-flow total flow, also be that the air-flow that flows through of the zone of the nearly wind side 24a of air outlet 24 and wind side 24b far away is more than the throughput that zone line flow through of air outlet 24, therefore, on the area that equates, the flow velocity that flows through the cooling blast of 24 liang of end regions of air outlet is greater than the flow velocity of the zone line cooling blast of air outlet 24, and it is bigger than wind side 24b far away wherein to flow through the air-flow velocity of nearly wind side 24a of air outlet 24.
Fins group 30 is located at air outlet 24 places of centrifugal fan 20, first fin 31 and second fin 32 that comprise some two kinds of different lengths that are arranged in parallel in the present embodiment, wherein first fin, 31 to the second fin 32 are long, described first fin 31 is arranged at the two ends of fins group 30 respectively, correspondence places the nearly wind side 24a and the wind side 24b far away of air outlet 24, second fin 32 then places the centre of fins group 30, promptly between first fin 31, correspondence places the zone line of air outlet 24, make the side of rotor 22 of fins group 30 corresponding centrifugal fans 20 stepped, and form linear away from the opposite side of the rotor 22 of centrifugal fan 20.In the present embodiment, the quantity of first fin 31 of nearly wind side 24a of being located at air outlet 24 is greater than the quantity of first fin 31 of the wind side 24b far away that is located at air outlet 24, to make full use of the smooth characteristic of the bigger air-flow of nearly wind side 24a, reach the whole effect that promotes heat dispersion.
Each fin 31,32 has identical structure, to simplify processing procedure, it comprises the body 311 of a rectangle, the both sides up and down of this body 311 extend to form a flanging (indicating) along the direction bending vertical with body 311 respectively, flanging and the mutual butt of flanging of last fin 31 (32) of back one fin 31 (32), and the runner 313 that formation air feed stream passes through between per two adjacent fin 31 (32).These fin 31 (32) can be fixed together by the mode of welding, also fastening structure can be set on flanging, and the mode by snapping is fixed together fin 31 (32) again.Each fin 31 (32) in away from the height of its body 311 of an end of air outlet 24 greater than height near an end of air outlet 24, thereby each first, second fin 31,32 that is fixed together forms the end difference (indicating) of a carrying heat pipe 40.Thereby first, second fin 31,32 equates to make each fin 31,32 just to insert in the air outlet 24 in the height of its body 311 of an end of close air outlet 24 with the height of air outlet 24.
Because the gas channel that the nearly wind side 24a of air outlet 24 and wind side 24b far away form in the centrifugal fan 20 is spacious, the space is bigger, be provided with first fin 31 longer than second fin 32, can make first fin 31 can be set to the bigger degree of depth the nearly wind side 24a and the wind side 24b inside far away of the air outlet 24 of centrifugal fan 20, and not interfere with the normal operation of the rotor 22 of centrifugal fan 20.The width of these second fin, 32 shared air outlets 24 can be air outlet 24 integral width 1/3 to 1/2 between, so that this second fin 32 conforms to the airflow state at these air outlet 24 places with the width of first fin, 31 shared air outlets 24, to bring into play maximum heat dissipation.In the present embodiment, this second fin 32 accounts for 1/2 of air outlet 24 integral width, places the nearly wind side 24a of air outlet 24 and first fin 31 of wind side 24b far away to account for 1/2 of air outlet 24 integral width altogether.
Heat pipe 40 is a flat, and it comprises an evaporation section 41 and a condensation segment 42.The evaporation section 41 and heat-collecting block 50 hot links of heat pipe 40, its condensation segment 42 is attached on the end difference of fins group 30, roughly consistent with the height of the end difference of the fins group 30 thereby heat pipe 40 of the height of heat pipe 40 just is carried on this end difference and does not protrude out to outside the fins group 30, heat pipe 40 except the bottom surface with the surface of fins group 30 contacts, its sidewall also contacts with the side surface of the end difference of fins group 30, thereby has increased the contact area of heat pipe 40 with fins group 30.
Heat-collecting block 50 is roughly rectangular, and its metal material by the tool high thermal conductivity coefficient is made.In the present embodiment, heat-collecting block 50 is made of copper.This heat-collecting block 50 is roughly along the angular direction is provided with the long and narrow evaporation section 41 of fluting 51 to accommodate heat pipe 40.The centre of this fluting 51 is a through hole that runs through 52, the evaporation section 41 of heat pipe 40 is contacted with the heat-generating electronic elements that is attached at heat-collecting block 50 belows (figure does not show), to improve heat exchange efficiency between the two, the heat that is more conducive to the heat-generating electronic elements generation reaches fins group 30 apace by heat pipe 40.
In this heat radiation module when assembling,, the evaporation section 41 of heat pipe 40 is contained in the fluting 51 of heat-collecting block 50, and the mode by heat-conducting glue or soldering links together the evaporation section 41 of heat pipe 40 with heat-collecting block 50.The condensation segment 42 of heat pipe 40 places on the end difference of fins group 30, and the bottom surface of its condensation segment 42 and sidewall all contact with fins group 30.Fins group 30 is located at air outlet 24 places of centrifugal fan 20.
When this heat radiation module is used for electronic installations such as notebook computer and dispels the heat, heat-collecting block 50 is attached on the heat-generating electronic elements, the heat that heat-generating electronic elements produced is passed to heat pipe 40 by heat-collecting block 50, by heat pipe 40 heat is reached fins group 30 again, at last the air-flow that produces by centrifugal fan 20 brush fins group 30 and and fins group 30 between heat exchange takes place, heat is dispersed into the external world the most at last.Because air outlet 24 corresponding wind flow and bigger nearly wind side 24a and the wind side 24b far away of wind speed at centrifugal fan 20 are provided with the first long fin 31, be deep into to the bigger degree of depth in the air outlet 24 of centrifugal fan 20, effectively utilized the heat-dissipating space in the centrifugal fan 20, increased area of dissipation, the powerful cooling blast of wind speed that centrifugal fan 20 is produced can contact with first fin 31 as soon as possible, improve the heat exchanger effectiveness of air-flow and fin, can improve the radiating efficiency of heat radiation module.Slower because of the air velocity of air outlet 24 zone lines in addition, shorter to second fin 32 that should zone line be provided with, in the air-flow travel path, form bigger hole, thereby avoid the air-flow of this zone line is formed obstruction, make the slower air-flow of this zone line flow velocity also can in time pass through fins group 30 swimmingly.
In this heat radiation module, fins group 30 also can be arranged to other shape corresponding to the airflow state of air outlet 24.Be illustrated in figure 4 as dispel the heat second embodiment of module of the present invention and remove assembling schematic diagram behind the loam cake 214 of centrifugal fan 20, in this heat radiation module, fins group 30a comprises fin 31a, 31b, 32a, the 32b of four kinds of different lengths.Wherein fin 31a is the longest, and fin 31b takes second place, and 32b is the shortest for fin, and the length of fin 32a is between fin 31b and fin 32b length.Fin 31a correspondence is arranged on the nearly wind side 24a of air outlet 24, fin 31b correspondence is arranged on the wind side 24b far away of air outlet 24, fin 32b correspondence is arranged on the zone line of contiguous wind side 24b far away, and fin 32a correspondence is arranged on the zone line of contiguous nearly wind side 24a.Be located at two kinds of air outlet 24 zone lines the width of the short shared air outlet 24 of fin 32a, 32b be 1/2 of air outlet 24 integral width, the nearly wind side 24a that places air outlet 24 and fin 31a, the 31b of wind side 24b far away account for air outlet 24 integral width remaining 1/2.With identical among first embodiment, be located at two kinds of air outlet 24 zone lines the width of the short shared air outlets 24 of fin 32a, 32b also can be air outlet 24 integral width 1/3 to 1/2 between, so that the width of each fin 31a, 31b, the shared air outlet 24 of 32a, 32b conforms to the airflow state at these air outlet 24 places, to bring into play maximum heat dissipation.

Claims (12)

  1. One kind the heat radiation module, comprise a centrifugal fan and a fins group, this centrifugal fan comprises a rotor, this centrifugal fan is provided with an air outlet, and air outlet comprises at a nearly wind side at two ends and a wind side far away and the zone line between nearly wind side and wind side far away, this fins group is located at this air outlet place and is comprised some fin, it is characterized in that: described fins group corresponding to the length of the fin of the nearly wind side of air outlet and wind side far away greater than length corresponding to the fin of the zone line of air outlet, make a side of the rotor of the corresponding centrifugal fan of fins group form the stepped distribution that fin is uneven in length, and form linear away from the opposite side of the rotor of centrifugal fan.
  2. 2. heat radiation module as claimed in claim 1, it is characterized in that: described fins group is made up of some first fin and some second fin of two kinds of different lengths, wherein the length of first fin is greater than the length of second fin, these some first fin are located at the nearly wind side and the wind side far away of air outlet respectively, and these some second fin are located at the zone line of air outlet.
  3. 3. heat radiation module as claimed in claim 1, it is characterized in that: described fins group comprises the fin of at least three kinds of different lengths, wherein be located at the length maximum of fin of the nearly wind side of air outlet, be located at the length of fin of the wind side far away of air outlet and take second place, be located at the length minimum of fin of the zone line of air outlet.
  4. 4. heat radiation module as claimed in claim 3, it is characterized in that: described fins group comprises the fin of four kinds of different lengths, be located at the length maximum of fin of the nearly wind side of air outlet, being located at the length of fin of the wind side far away of air outlet takes second place, be located at the zone line of air outlet but the length minimum of the fin at contiguous wind side position far away place, be located at the zone line of air outlet but the length of the fin of contiguous nearly wind side between the fin of the nearly wind side of being located at air outlet be located at the zone line of air outlet but between the fin length of contiguous wind side far away.
  5. 5. as claim 2 or 3 described heat radiation modules, it is characterized in that: the quantity of fin of nearly wind side of being located at air outlet is greater than the quantity of the fin of the wind side far away of being located at air outlet.
  6. 6. heat radiation module as claimed in claim 1, it is characterized in that: this heat radiation module also comprises a heat pipe and a heat-collecting block, this heat pipe comprises an evaporation section and a condensation segment, and the evaporation section of this heat pipe is connected with this heat-collecting block, the condensation segment of this heat pipe and fins group hot link.
  7. 7. heat radiation module as claimed in claim 6 is characterized in that: this diagonal angle, heat-collecting block upper edge offers the fluting of a thin-and-long, and the evaporation section of this heat pipe is contained in this fluting.
  8. 8. heat radiation module as claimed in claim 6 is characterized in that: form an end difference on this fins group, the condensation segment of this heat pipe places on the end difference of fins group, and the bottom surface of condensation segment and sidewall all contact with fins group.
  9. 9. fins group, comprise some fin, it is characterized in that: described fins group is positioned at the length of fin at two ends greater than the length of the fin that is positioned at zone line, makes fins group form the stepped distribution that fin is uneven in length in a side, and forms linear in opposite side.
  10. 10. fins group as claimed in claim 9, it is characterized in that: described fins group is made up of some first fin and some second fin of two kinds of different lengths, wherein the length of first fin is greater than the length of second fin, these some first fin are located at the two ends of fins group respectively, and these some second fin are located at the zone line of fins group.
  11. 11. fins group as claimed in claim 9, it is characterized in that: described fins group comprises the fin of at least three kinds of different lengths, be located at the wherein length maximum of the fin of an end of fins group, be located at the length of the fin of the fins group other end and take second place, and be located at the length minimum of fin of the zone line of fins group.
  12. 12. as claim 10 or 11 described fins group, it is characterized in that: the quantity of fin of being located at fins group one end is greater than the quantity of the fin of being located at the fins group other end.
CN2007100757007A 2007-08-17 2007-08-17 Heat radiation module Expired - Fee Related CN101370370B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2007100757007A CN101370370B (en) 2007-08-17 2007-08-17 Heat radiation module
US11/955,304 US20090044927A1 (en) 2007-08-17 2007-12-12 Thermal module and fin unit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007100757007A CN101370370B (en) 2007-08-17 2007-08-17 Heat radiation module

Publications (2)

Publication Number Publication Date
CN101370370A true CN101370370A (en) 2009-02-18
CN101370370B CN101370370B (en) 2011-11-09

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CN101945560A (en) * 2009-07-07 2011-01-12 富瑞精密组件（昆山）有限公司 Heat abstractor
CN102196707A (en) * 2010-03-08 2011-09-21 富准精密工业(深圳)有限公司 Heat radiating device
CN102421272A (en) * 2010-09-27 2012-04-18 富瑞精密组件（昆山）有限公司 Portable electronic device and heat radiation module thereof
CN102427706A (en) * 2011-12-05 2012-04-25 苏州聚力电机有限公司 Thinned heat-radiating module
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CN101945560A (en) * 2009-07-07 2011-01-12 富瑞精密组件（昆山）有限公司 Heat abstractor
CN102196707A (en) * 2010-03-08 2011-09-21 富准精密工业(深圳)有限公司 Heat radiating device
CN102421272A (en) * 2010-09-27 2012-04-18 富瑞精密组件（昆山）有限公司 Portable electronic device and heat radiation module thereof
CN102427706A (en) * 2011-12-05 2012-04-25 苏州聚力电机有限公司 Thinned heat-radiating module
CN102427706B (en) * 2011-12-05 2015-09-02 苏州聚力电机有限公司 A kind of Thinned heat-radiating module
CN110442213A (en) * 2019-07-02 2019-11-12 昆山品岱电子有限公司 A kind of radiator improving outlet air
CN112486291A (en) * 2019-09-12 2021-03-12 英业达科技有限公司 Heat dissipation system
CN116033704A (en) * 2022-05-31 2023-04-28 荣耀终端有限公司 Heat dissipation module and electronic equipment
CN116033704B (en) * 2022-05-31 2023-11-24 荣耀终端有限公司 Heat dissipation module and electronic equipment

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