WO2022027740A1 - Chambre à vapeur mince - Google Patents

Chambre à vapeur mince Download PDF

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Publication number
WO2022027740A1
WO2022027740A1 PCT/CN2020/111172 CN2020111172W WO2022027740A1 WO 2022027740 A1 WO2022027740 A1 WO 2022027740A1 CN 2020111172 W CN2020111172 W CN 2020111172W WO 2022027740 A1 WO2022027740 A1 WO 2022027740A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover plate
capillary
upper cover
lower cover
cavity
Prior art date
Application number
PCT/CN2020/111172
Other languages
English (en)
Chinese (zh)
Inventor
张于光
Original Assignee
昆山联德电子科技有限公司
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 昆山联德电子科技有限公司 filed Critical 昆山联德电子科技有限公司
Publication of WO2022027740A1 publication Critical patent/WO2022027740A1/fr

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    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal

Definitions

  • the utility model belongs to the technical field of temperature uniformity plates, in particular to a thin temperature uniformity plate.
  • Vapor chambers have gradually replaced traditional heat sinks.
  • the vapor chamber has the ability of rapid surface heat conduction and high-density heat conduction, and has the characteristics of lightness and thinness.
  • the vacuum chamber is not cleanly degassed.
  • the residual gas including hydrogen cannot be condensed above 0 °C, resulting in performance degradation or failure.
  • Iron or iron alloy undergoes electrochemical corrosion reaction in the presence of medium water or water vapor, and redox releases iron oxide and hydrogen (hydrogen evolution reaction), even if iron or iron alloy has better anti-corrosion and anti-oxidation treatment A slower hydrogen evolution reaction will still occur, and the reaction will speed up as the temperature increases;
  • the vaporizing plate products with hydrogen absorbing function are all placed in the cavity with an independent hydrogen absorbing device, which occupies the heat conduction space of the vaporizing plate, and is easy to form a blind area of uniform temperature.
  • the position of the hydrogen absorbing device has a large temperature difference and is limited In view of the possibility that the thickness of the vapor chamber will continue to decrease, it is difficult to achieve a thickness of 0.3mm, which becomes the bottleneck of the structural design of ultra-thin products; and additional placement and fixing operations are required in the production and manufacturing, and the processing efficiency and cost are both high for consumer products. Great constraints on production capacity and cost.
  • the purpose of the present utility model is to provide a thin temperature equalizing plate, which can effectively remove a variety of condensed gases that cannot be above 0°C, including hydrogen, in the chamber of the temperature equalizing plate, Improve and maintain the good low temperature difference uniform temperature performance of the vapor chamber.
  • a thin temperature equalizing plate comprising an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are opposite to each other and a cavity is formed between them, and a capillary is arranged in the cavity and on the side close to the upper cover plate Liquid suction structure, a working phase change fluid medium is enclosed in the cavity, a plurality of supporting structures and/or capillary supporting composite structures are selectively arranged between the upper cover plate and the lower cover plate, and the lower cover plate and/or the support structure and/or
  • the capillary support composite structure supports the upper cover plate, and several metal plating layers are respectively arranged on the upper cover plate, the lower cover plate, the capillary liquid absorption structure, the support structure and the capillary support composite structure.
  • front and back sides of the upper cover plate, the lower cover plate, the capillary liquid absorption structure, the support structure and the capillary support composite structure faces all of the one side inside the cavity, and the front side or the back side faces the inside of the cavity.
  • a number of layers of metal plating layers are respectively provided on one side.
  • two metal plating layers are respectively provided on the upper cover plate, the lower cover plate, the capillary liquid absorption structure, the support structure and the capillary support composite structure.
  • the thickness of the first metal plating layer is 1 ⁇ m ⁇ 50 ⁇ m, and the thickness of the second metal plating layer is 0.01 ⁇ m ⁇ 10 ⁇ m.
  • the cavity between the upper cover plate and the lower cover plate is filled with gas adsorption particles with a particle size of 5um to 500um.
  • the lower cover is in a concave-convex structure
  • the capillary liquid absorption structure is connected with the concave portion on the top of the lower cover
  • the upper cover and the bottom convex portion of the lower cover are face-to-face and form several cavities.
  • both the support structure and the capillary support composite structure are in the form of a network, and the capillary support composite structure is coated with copper powder.
  • the capillary liquid-absorbing structure is a network capillary network formed by weaving.
  • a seal is provided in the middle of one side of the temperature equalizing plate, and a working phase change fluid medium is injected into the cavity through the seal.
  • the metal plating layer adopts any one of titanium-based substances, calcium-based substances, palladium-based substances, vanadium-based substances, and platinum-based substances.
  • a cavity is formed between the upper cover and the lower cover, and several support structures and/or capillary support composite structures are selectively arranged between the upper cover and the lower cover.
  • the capillary support composite structure supports the upper cover plate, and the liquid fluid medium flows along the capillary liquid absorption structure by the surface tension tensile stress of the material, with strong capillary ability and high structural stability;
  • the upper cover, the lower cover, the support structure, the capillary liquid absorption structure and the capillary support composite structure are given the function of absorbing and storing various gases that cannot be condensed above 0°C, including hydrogen, which greatly simplifies the temperature uniformity plate.
  • the assembly and manufacturing process is convenient for automated production and manufacturing, which improves efficiency and reduces manufacturing costs;
  • Fig. 1 is the front view of the uniform temperature plate of Embodiment 1 of the present utility model
  • Fig. 2 is A-A sectional view in Fig. 1 of the utility model
  • Fig. 3 is the partial enlarged view of I in Fig. 2 of the utility model
  • Fig. 4 is the structural representation of the capillary liquid absorbing structure of the present invention.
  • Fig. 8 is A-A sectional view in Fig. 7 of the utility model
  • Fig. 11 is A-A sectional view in Fig. 10 of the utility model
  • Fig. 12 is the temperature difference curve diagram of the aging test after the soaking plate of the utility model is coated
  • FIG. 13 is a temperature difference curve diagram of the aging test of the uncoated layer of the vapor chamber of the present invention.
  • a thin-type temperature equalizing plate has a seal 1 on one side of the uniform temperature plate.
  • the temperature equalizing plate includes an upper cover plate 2 and a lower cover plate 3, and the upper cover plate 2 and the lower cover plate 3 are face-to-face. And a cavity is formed between the two. Specifically, the upper cover plate 2 and the lower cover plate 3 are in contact with the head and tail surfaces and form a cavity in the middle position. The side of the cavity close to the upper cover plate 2 is provided with capillary suction. Liquid structure 5, the working phase change fluid medium is injected into the cavity through the seal 1 and vacuumed for sealing.
  • the working phase change fluid medium changes from a liquid fluid medium to a gaseous fluid medium after being heated at the heat source, and moves to the non-gaseous fluid medium by the expansion force.
  • the heat source condenses and changes back to the liquid fluid medium and releases heat at the same time, and the liquid fluid medium flows back to the heat source along the capillary liquid absorbing structure 5 by the tensile stress of the surface tension of the material, and several supports are selectively arranged between the upper cover plate 2 and the lower cover plate 3
  • the structure 4 and several capillary support composite structures support the upper cover plate 2 through the lower cover plate 3 and/or the support structure 4 and/or the capillary support composite structure, and the lower cover plate 3, the support structure 4 and the capillary support composite structure can be selected.
  • One or several combinations of supporting the upper cover plate 2, the support structure 4 and the capillary support composite structure can be alternately arranged or not simultaneously arranged between the upper cover plate 2 and the lower cover plate 3, the support structure 4 and the capillary support composite structure Both are in the form of a network and have the same structure.
  • the capillary support composite structure can be obtained by coating copper powder on the support structure 4.
  • the lower cover plate 3 can be designed into a concave-convex structure or other structures to improve the support capacity, as shown in Figure 8. It is only necessary to ensure that there is a cavity between the lower cover 3 and the upper cover 2, and that the shape and structure of the upper cover 2, the lower cover 3, the support structure 4, the capillary suction structure 5 and the capillary support composite structure are all the same.
  • the upper cover plate 2, the lower cover plate 3, the support structure 4, the capillary liquid absorption structure 5 and the capillary support composite structure are respectively provided for absorbing, storing and removing several kinds of hydrogen, including hydrogen, which cannot be condensed above 0 °C.
  • the thickness of the first metal coating is 1 ⁇ m to 50 ⁇ m
  • the thickness of the second metal coating is 0.01 ⁇ m to 10 ⁇ m
  • the thickness of the Nth metal coating can be decreased according to actual needs.
  • the present invention does not limit the position of the metal coating on the surface of the upper cover plate 2, the lower cover plate 3, the support structure 4, the capillary liquid absorption structure 5 and the capillary support composite structure.
  • Parts, including edges, corners, middle parts or multiple parts, can also disperse gas adsorption particles with a particle size of 5 ⁇ m to 500 ⁇ m in the cavity to remove the gas in the cavity.
  • the temperature equalizing plate is made of one or more of copper, copper alloy, iron, stainless steel of various grades, titanium, titanium alloy, aluminum, aluminum alloy, magnesium, magnesium alloy nickel, nickel alloy, tin, and tin alloy.
  • the metal plating layer is made of a composite material alloy in which one or more of titanium-based substances, calcium-based substances, palladium-based substances, vanadium-based substances, and platinum-based substances are combined.
  • the capillary liquid-absorbing structure 5 is a network capillary network formed by weaving, or a network capillary network structure composed of powder sintering or weaving and powder sintering. There are several circular dimple structures on it, and the capillary capacity is high.
  • the utility model effectively removes a variety of condensed gases, including hydrogen, which cannot be above 0°C in the cavity of the temperature chamber, and improves and maintains the good low temperature difference average temperature and thermal conductivity of the temperature chamber; the temperature is within 400°C Absorb and store small molecular gases such as hydrogen, retain the working phase change fluid medium in the cavity and make the unique component ratio in the cavity higher, so as to achieve the purpose of improving and maintaining the uniform temperature performance of the vapor chamber; it can make a great breakthrough
  • the manufacturing limit of the thickness of the thin vapor chamber is currently at 0.18mm, which fully meets the conventional test requirements for thin vapor chambers.
  • all chambers with a thickness of ⁇ 0.1mm are applicable to the utility model; the manufacturing process of vapor chamber assembly is greatly simplified, and the automation is facilitated. Manufacturing, improves efficiency and reduces manufacturing costs; it can effectively improve the performance and manufacturing yield of the vapor chamber, maintain the excellent thermal conductivity of the vapor chamber for a long time, and can withstand long-term aging tests. It has a wide range of application prospects. It has low technological difficulty and is of great practical value in electronic products, electronic components, vehicle power systems, batteries and other products and industries.
  • a thin temperature uniform plate has a seal 1 on one side of the uniform temperature plate.
  • the uniform temperature plate includes an upper cover plate 2 and a lower cover plate 3.
  • the head and tail surfaces of the upper cover plate 2 and the lower cover plate 3 The surfaces are connected to each other and an internal cavity is formed in the middle position.
  • a capillary liquid absorbing structure 5 is arranged on the side close to the upper cover plate 2.
  • the sealing 1 injects the working phase change fluid medium into the cavity and vacuumizes the sealing.
  • Several supporting structures 4 are arranged in parallel between the upper cover 2 and the lower cover 3. At this time, there is no need to set up a capillary support composite structure.
  • the plate 3 and the support structure 4 support the upper cover plate 2, and the support structure 4 is a network structure formed by weaving or powder sintering or weaving and powder sintering.
  • the upper cover plate 2, the lower cover plate 3, the support Structure 4 and capillary liquid absorbing structure 5 are respectively provided with two layers of metal coatings for absorbing, storing and removing several kinds of gases including hydrogen that cannot be condensed above 0°C.
  • the thickness of the first metal coating is 10 ⁇ m
  • the thickness of the second metal coating is
  • the thickness of the metal plating layer is 5 ⁇ m.
  • a thin temperature uniform plate has a seal 1 on one side of the uniform temperature plate.
  • the uniform temperature plate includes an upper cover plate 2 and a lower cover plate 3.
  • the head and tail surfaces of the upper cover plate 2 and the lower cover plate 3 The surfaces are connected to each other and an internal cavity is formed in the middle position.
  • a capillary liquid suction structure 5 is arranged on the side close to the upper cover plate 2, and the working phase change fluid medium is injected into the cavity through the sealing 1, and the sealing is performed by vacuuming.
  • the difference between the second embodiment and the first embodiment is that the support structure 4 and the capillary support composite structure can be selectively arranged or not arranged between the upper cover plate 2 and the lower cover plate 3 of the second embodiment.
  • the capillary liquid absorbing structure 5 is connected to the upper cover plate 2, and the other side of the capillary liquid absorbing structure 5 is connected to the top recess of the concave-convex structure of the lower cover plate 3. Connection, a cavity is formed between the bottom protrusion of the concave-convex structure of the lower cover plate 3 and the upper cover plate 2, and the upper cover plate 2, the lower cover plate 3, and the capillary liquid absorbing structure 5 are respectively provided for absorbing, storing and removing.
  • the thickness of the first metal coating is 10 ⁇ m
  • the thickness of the second metal coating is 5 ⁇ m.
  • the support structure 4 and the capillary support composite structure can be selectively arranged or not arranged between the upper cover plate 2 and the lower cover plate 3 of the second embodiment.
  • Several circular or other arbitrary-shaped structures arranged in a row are arranged on the inner wall to improve the supporting capacity. At this time, there is still a cavity between the upper cover plate 2 and the lower cover plate 3, as shown in Figure 9-11.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

La présente invention concerne une chambre à vapeur mince. Une plaque de couverture supérieure (2) et une plaque de couverture inférieure (3) sont opposées de façon face à face, et une cavité est formée entre la plaque de couverture supérieure et la plaque de couverture inférieure ; une structure d'absorption de liquide capillaire (5) est agencée dans la cavité et sur un côté proche de la plaque de couverture supérieure (2), et un milieu fluide à changement de phase de travail est scellé dans la cavité ; une pluralité de structures de support (4) et/ou de structures composites de support capillaire sont agencées sélectivement entre la plaque de couverture supérieure (2) et la plaque de couverture inférieure (3) ; la plaque de couverture supérieure (2) est soutenue au moyen de la plaque de couverture inférieure (3) et/ou des structures de support (4) et/ou des structures composites de support capillaire ; et une pluralité de revêtements métalliques sont respectivement disposés sur la plaque de couverture supérieure (2), la plaque de couverture inférieure (3), la structure d'absorption de liquide capillaire (5), les structures de support (4) et les structures composites de support capillaire. La chambre à vapeur possède les fonctions d'absorption et de stockage de différents gaz qui comprennent de l'hydrogène et qui ne peuvent pas être condensés à une température de 0 °C ou plus, les performances et le rendement de fabrication de la chambre à vapeur sont efficacement améliorés, les excellentes performances de conduction thermique de la chambre à vapeur sont maintenues pendant une longue durée, et la chambre à vapeur peut résister à un test de vieillissement à long terme.
PCT/CN2020/111172 2020-08-03 2020-08-26 Chambre à vapeur mince WO2022027740A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021576995.3 2020-08-03
CN202021576995.3U CN212931119U (zh) 2020-08-03 2020-08-03 一种薄型均温板

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WO2022027740A1 true WO2022027740A1 (fr) 2022-02-10

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WO (1) WO2022027740A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113347860A (zh) * 2021-07-08 2021-09-03 东莞立讯技术有限公司 热导装置及其制造方法、电连接器和电子装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87103423A (zh) * 1986-04-23 1987-11-18 昭和铝株式会社 热管
CN1144324A (zh) * 1994-09-25 1997-03-05 中国科学院广州能源研究所 渗透除氢热管
JP2010060206A (ja) * 2008-09-04 2010-03-18 Fujikura Ltd アルミニウム製ヒートパイプ
CN101852565A (zh) * 2010-05-11 2010-10-06 中国科学院广州能源研究所 储氢合金除氢长效热管
CN209605636U (zh) * 2016-02-29 2019-11-08 古河电气工业株式会社 热管及具有该热管的散热器
CN110567304A (zh) * 2019-10-15 2019-12-13 联德精密材料（中国）股份有限公司 薄型毛细结构支撑均温板
CN110779370A (zh) * 2019-12-06 2020-02-11 昆山联德电子科技有限公司 薄型均温板
CN111065876A (zh) * 2017-08-23 2020-04-24 古河电气工业株式会社 热管及热管的制造方法
CN111322891A (zh) * 2020-02-25 2020-06-23 张于光 一种均温板散热器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87103423A (zh) * 1986-04-23 1987-11-18 昭和铝株式会社 热管
CN1144324A (zh) * 1994-09-25 1997-03-05 中国科学院广州能源研究所 渗透除氢热管
JP2010060206A (ja) * 2008-09-04 2010-03-18 Fujikura Ltd アルミニウム製ヒートパイプ
CN101852565A (zh) * 2010-05-11 2010-10-06 中国科学院广州能源研究所 储氢合金除氢长效热管
CN209605636U (zh) * 2016-02-29 2019-11-08 古河电气工业株式会社 热管及具有该热管的散热器
CN111065876A (zh) * 2017-08-23 2020-04-24 古河电气工业株式会社 热管及热管的制造方法
CN110567304A (zh) * 2019-10-15 2019-12-13 联德精密材料（中国）股份有限公司 薄型毛细结构支撑均温板
CN110779370A (zh) * 2019-12-06 2020-02-11 昆山联德电子科技有限公司 薄型均温板
CN111322891A (zh) * 2020-02-25 2020-06-23 张于光 一种均温板散热器

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