WO2012152018A1 - Echangeur de chaleur du type à tube caloporteur plan - Google Patents

Echangeur de chaleur du type à tube caloporteur plan Download PDF

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Publication number
WO2012152018A1
WO2012152018A1 PCT/CN2011/084561 CN2011084561W WO2012152018A1 WO 2012152018 A1 WO2012152018 A1 WO 2012152018A1 CN 2011084561 W CN2011084561 W CN 2011084561W WO 2012152018 A1 WO2012152018 A1 WO 2012152018A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
heat exchanger
condensation
evaporation
heat
Prior art date
Application number
PCT/CN2011/084561
Other languages
English (en)
Chinese (zh)
Inventor
朱旺法
薛松
鞠金培
刘欣
易杰
景佰亨
郭雨龙
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012152018A1 publication Critical patent/WO2012152018A1/fr

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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

Definitions

  • the invention relates to the technical field of heat exchangers, in particular to a flat heat pipe heat exchanger. Background technique
  • the heat pipe can quickly pass the heat generated by the high-heat heat source through the vaporizing subtropical zone. Because of the large latent heat of vaporization, the temperature of the heated surface can be instantaneously reduced, thereby effectively reducing the temperature of the heat source and improving the reliability of the system.
  • the power consumption of the power tube is up to several hundred watts.
  • the traditional solution is to: solder the power tube on the copper substrate, and use the good thermal conductivity of copper to quickly heat the local heat source. Expanding around, increasing the effective heat dissipation area, and efficiently transferring heat to the heat dissipating fins, thereby reducing the temperature of the heat source.
  • VC steam chamber heat pipe on RRU shows that no matter what structure is adopted, as long as the heat can be quickly diffused (showing good uniform temperature performance on the contact surface with the heat source), the temperature of the heat source can be effectively reduced, and the whole system can be improved. reliability.
  • the VC steam cavity heat pipe has a fatal disadvantage in that the external dimensions are limited. When the external dimensions are increased to a certain extent, the heat pipe cannot work, and the heat transfer effect of the entire heat pipe is even worse than that of the copper block. The main reason is that when the external dimensions increase, The capillary force (a force that drives the flow of the liquid caused by the surface tension) cannot overcome the flow resistance of the liquid. At this time, the VC steam chamber heat pipe cannot work, and thus the heat transfer performance is drastically deteriorated. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a flat heat pipe heat exchanger for solving the problem that the heat dissipation performance of the prior art steam cavity heat pipe is limited by the structure size.
  • the present invention provides a flat heat pipe heat exchanger, the heat exchanger comprising: a casing, the inside of the casing is a closed steam chamber; the steam chamber is provided with a working liquid;
  • the heat exchanger is provided with a condensation surface and an evaporation surface, a top surface of the condensation surface is provided with a condensation surface groove collector; a bottom surface of the evaporation surface is provided with a evaporation surface groove collector; the condensation surface groove collector and the evaporation surface
  • the groove collector is in communication through an internal groove disposed on an inner wall of the steam chamber.
  • the internal grooves are one or more.
  • the inner groove includes a condensation surface inner groove and an evaporation surface inner groove, and the condensation surface inner groove extends downward with the condensation surface groove collector as a vertex; the evaporation surface inner groove is The evaporation surface groove collector extends upward from the apex and communicates with the internal groove of the condensation surface to form a closed loop.
  • the working liquid is water, ammonia or a refrigerant.
  • the evaporation surface groove collector is filled with a porous metal foam, a wire mesh, and/or a sintered metal powder.
  • a portion of the outer casing corresponding to the condensing surface is provided with heat dissipating fins, or a groove is formed.
  • the inner groove is semicircular, square, trapezoidal or triangular.
  • the invention absorbs the heat of the heat source through the working liquid in the evaporation surface groove collector, and the generated steam liquefies and radiates heat on the condensation surface through the steam chamber, and the heat is radiated to the surrounding environment, and the steam is on the condensation surface. After condensing in the groove collector, under the action of gravity and capillary force, it flows along the internal groove to the evaporation surface groove collector to realize circulation.
  • the invention can effectively reduce the temperature of the power tube device, thereby ensuring reliable, safe and stable operation of the system.
  • FIG. 1 is a schematic structural view of a flat heat pipe heat exchanger according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is a cross-sectional view taken along line B-B of Figure 1;
  • Figure 4 is a perspective view showing the internal structure of the internal groove of Figure 1;
  • Figure 5 is a cross-sectional view taken along line C-C of Figure 1. detailed description
  • the present invention provides a flat heat pipe heat exchanger.
  • the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • FIG. 1 is a schematic structural view of a flat heat pipe heat exchanger according to an embodiment of the present invention, wherein the broken line in FIG. 1 indicates the internal structure of the flat heat pipe heat exchanger.
  • an embodiment of the present invention relates to a flat heat pipe heat exchanger, comprising: a casing 1 having a closed steam chamber 2 inside the casing 1; a working liquid 52 disposed in the steam chamber 2; The evaporation surface 6 and the condensation surface 7 and the four side surfaces are surrounded, wherein the evaporation surface 6 refers to a surface that absorbs heat of the heat source through the working liquid 52 in the evaporation surface groove collector 5; the condensation surface 7 is a surface that is directed to the external heat dissipation.
  • the outer casing 1 adopts a six-sided square structure, the two largest surfaces are the evaporation surface 6 and the condensation surface 7, respectively, and the remaining four surfaces are the upper and lower bottom surfaces and the left and right side surfaces, respectively.
  • the top of the condensation surface 7 is provided with a condensation surface groove collector 3; the bottom of the evaporation surface 6 is provided with a evaporation surface groove collector 5; the condensation surface groove collector 3 and the evaporation surface groove collector 5 are disposed on the inner wall of the steam chamber 2
  • the upper inner groove 4 is connected.
  • the inner grooves 4 may be one piece or a plurality of pieces, and in the case of a plurality of pieces, each of them communicates with the condensing surface groove concentrator 3 and the evaporation surface groove concentrator 5.
  • the inner groove 4 includes a condensation face inner groove 41 and an evaporation face inner groove 42.
  • the condensation face inner groove 41 extends downward with the condensation face groove collector 3 as a vertex, and the groove of the condensation section has a ' ⁇ 'shape;
  • the evaporation surface inner groove 42 extends upward from the evaporation surface groove collector 5 and communicates with the condensation surface inner groove collector 3 to form a closed loop.
  • the evaporation section groove and the condensation section groove have opposite shapes. ' ⁇ ' shape.
  • the groove is also provided with grooves on both sides of the vapor chamber 2 connecting the condensation surface 7 and the evaporation surface 6, for connecting the condensation surface inner groove 41 and the evaporation surface inner groove 42 to form a closed loop.
  • the shape of the inner groove 4 may be semicircular, square, trapezoidal or triangular.
  • the semicircle includes an " ⁇ " shape, an ellipse shape, a quarter circle shape, a three-quarter circle shape, a circular arc shape, and the like.
  • the trapezoid includes a trapezoid with a small upper bottom, a large trapezoid with a large lower bottom, and a small dovetail with a large upper and lower bottom.
  • the entire flat heat pipe radiator of this embodiment is placed in a vertical position; the portion of the outer casing 1 corresponding to the condensation surface 7 is provided with heat dissipating fins, or a groove is formed.
  • the outer casing 1 corresponding to the condensation surface 7 is provided with fins to increase the effective condensation area.
  • the cold source is a liquid, a "U" shaped channel or a fractal tree structure can be directly placed on the condensing surface of the casing to enhance heat exchange.
  • the housing material of the outer casing 1 may be a variety of high thermal conductivity metals such as copper and aluminum alloy.
  • the working fluid 52 is water, ammonia or a plurality of refrigerants.
  • the evaporation face groove collection 5 is filled with a porous metal foam, a wire mesh and/or a sintered metal powder, or various composite heat source wick structures 51.
  • the wick can enhance the capillary driving force, not only can quickly evaporate or boil the working liquid, form steam 8, and can quickly flow the liquid in the condensing section to the evaporation point, thereby improving the heat exchange efficiency.
  • the working principle of the flat heat pipe heat exchanger of the present invention is that the flat heat pipe heat exchanger is placed vertically, the evaporation surface groove collector 5 is located at the bottom of the evaporation surface 6, and the condensation section groove collector 3 is located at the condensation surface 7. The top. The position of the heat source 10 is close to the bottom of the flat heat pipe heat exchanger of the embodiment of the present invention.
  • the flat heat pipe of the embodiment uses the working liquid (working liquid 52) in the groove collector 5 of the evaporation section.
  • the heat of the power tube is absorbed to generate an evaporation phase change, and the steam 8 generated by the vapor phase transition from the heat source point rapidly flows through the steam chamber 2 to the condensation surface 7 of a larger area, and the heat is released after the condensation surface 7 is condensed, passing through the condensation surface 7 Direct transmission to external sources of cold.
  • the condensate produced by the vapor 8 after liquefaction on the condensing surface 7 flows downward in both directions of the inner groove 41 of the condensing surface under the double driving of capillary force and gravity, and passes through the side wall groove to the inner groove 42 of the evaporation surface. Go to the evaporation section groove collector 5.
  • the working liquid in the evaporation section groove collector 5 again absorbs the heat of the high heat flow heat source 10 to generate steam 8, which is condensed by the steam chamber 2 to the condensation surface 7.
  • the heat transfer in the heat pipe is realized by the capillary pump pressure and the gravity, and the heat of the heat source 10 can be quickly absorbed, thereby effectively reducing the temperature of the heat source 10.
  • the flat heat pipe heat exchanger of the embodiment of the invention can quickly pass the heat generated by the high heat flow heat source point through the vaporization latent tropical zone, the latent heat of the vaporization is large, so that the temperature level of the heating surface can be instantaneously reduced, so that the flat heat pipe heating surface has superior isothermal temperature. Performance, effectively reducing the temperature of the power tube device, thus ensuring reliable, safe and stable operation of the system. It can not only overcome the shortcomings of the copper block unable to transmit large heat in a limited space, but also overcome the shortcomings of the VC steam cavity heat pipe structure when it has a large size.
  • the internal groove structure can not only effectively utilize the suction driving effect of the capillary force, but also make full use of the action of gravity to quickly return the condensate from the condensation section to the evaporation section;
  • the composite wick structure of the inner groove of the evaporation surface and the wire mesh can provide a strong capillary driving force, and also allows the liquid in the condensing section to quickly flow back to the evaporation section. This greatly increases the maximum heat transfer capacity. Therefore, it can effectively eliminate local hot spots, improve the temperature uniformity of the heating surface and reduce the temperature of the power tube, thereby reducing the overall system temperature and ensuring reliable, safe and stable operation of the system.
  • the flat heat pipe heat exchanger of the embodiment of the invention has the characteristics of simple structure, convenient processing and strong operability.

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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention porte sur un échangeur de chaleur à tube caloporteur plan qui comprend : une enveloppe (1), une cavité de vapeur étanche (2) à l'intérieur du boîtier (1), et un fluide travaillant (52) contenu dans la cavité de vapeur (2). L'échangeur de chaleur à tube caloporteur plan comporte une face de condensation (7) et une face d'évaporation (6). La cavité de vapeur (2) est entourée par la face de condensation (7), par la face d'évaporation (6) et par quatre faces latérales. Sur la partie haute de la face de condensation (7) est disposé un groupement de rainures de face de condensation (3). Sur la partie basse de la face d'évaporation, est disposé un groupement de rainures de face d'évaporation (5). Le groupement de rainures de face de condensation (3) et le groupement de rainures de face d'évaporation (5) sont reliés par des rainures internes (4) formées sur la paroi intérieure de la cavité de vapeur (2). L'échangeur de chaleur à tube caloporteur plan autorise une température efficacement réduite des composants formant tubes d'énergie, en assurant ainsi au système un fonctionnement fiable, sûr et stable.
PCT/CN2011/084561 2011-07-01 2011-12-23 Echangeur de chaleur du type à tube caloporteur plan WO2012152018A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110183384.1A CN102261862B (zh) 2011-07-01 2011-07-01 一种平板热管换热器
CN201110183384.1 2011-07-01

Publications (1)

Publication Number Publication Date
WO2012152018A1 true WO2012152018A1 (fr) 2012-11-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/084561 WO2012152018A1 (fr) 2011-07-01 2011-12-23 Echangeur de chaleur du type à tube caloporteur plan

Country Status (2)

Country Link
CN (1) CN102261862B (fr)
WO (1) WO2012152018A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261862B (zh) * 2011-07-01 2016-04-13 中兴通讯股份有限公司 一种平板热管换热器
CN103395155A (zh) * 2013-07-01 2013-11-20 长春富维—江森自控汽车饰件系统有限公司 搪塑表皮b面薄膜型气泡消除方法
CN103453792A (zh) * 2013-08-14 2013-12-18 奉化市垭特机电科技有限公司 一种重力热管底部强化传热结构
CN104764349A (zh) * 2015-04-17 2015-07-08 广东新创意科技有限公司 一种复合型吸液芯超薄热管及其制造方法
CN115604976A (zh) * 2021-07-09 2023-01-13 中兴智能科技南京有限公司（Cn） 散热器及通信设备
CN115568160B (zh) * 2022-04-02 2023-08-18 荣耀终端有限公司 散热结构及电子设备

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CN2613740Y (zh) * 2003-04-17 2004-04-28 鸿富锦精密工业（深圳）有限公司 热管
JP2005077052A (ja) * 2003-09-03 2005-03-24 Hitachi Metals Ltd 平面型ヒートパイプ
CN1832156A (zh) * 2005-03-09 2006-09-13 台达电子工业股份有限公司 散热装置的结构及其制造方法
CN1858540A (zh) * 2005-04-29 2006-11-08 乐金电子（昆山）电脑有限公司 散热导管
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TWI261659B (en) * 2005-03-25 2006-09-11 Delta Electronics Inc Manufacturing method of heat dissipation apparatus
CN100334930C (zh) * 2005-07-18 2007-08-29 华中科技大学 一种用于cpl的平面式毛细芯蒸发器
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CN101762196A (zh) * 2010-01-08 2010-06-30 东南大学 多通道嵌入吸液芯式平板热管

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CN2613740Y (zh) * 2003-04-17 2004-04-28 鸿富锦精密工业（深圳）有限公司 热管
JP2005077052A (ja) * 2003-09-03 2005-03-24 Hitachi Metals Ltd 平面型ヒートパイプ
CN1832156A (zh) * 2005-03-09 2006-09-13 台达电子工业股份有限公司 散热装置的结构及其制造方法
CN1858540A (zh) * 2005-04-29 2006-11-08 乐金电子（昆山）电脑有限公司 散热导管
CN102261862A (zh) * 2011-07-01 2011-11-30 中兴通讯股份有限公司 一种平板热管换热器

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