US20120285662A1 - Vapor chamber with improved sealed opening - Google Patents

Vapor chamber with improved sealed opening Download PDF

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Publication number
US20120285662A1
US20120285662A1 US13/104,239 US201113104239A US2012285662A1 US 20120285662 A1 US20120285662 A1 US 20120285662A1 US 201113104239 A US201113104239 A US 201113104239A US 2012285662 A1 US2012285662 A1 US 2012285662A1
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US
United States
Prior art keywords
filling
casing
chamber
degassing tube
vapor chamber
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.)
Abandoned
Application number
US13/104,239
Inventor
George Anthony Meyer, IV
Chien-Hung Sun
Chieh-Ping Chen
Ming-Kuei Hsieh
Te-Hsuan Chin
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Celsia Technologies Taiwan Inc
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Celsia Technologies Taiwan Inc
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 Celsia Technologies Taiwan Inc filed Critical Celsia Technologies Taiwan Inc
Priority to US13/104,239 priority Critical patent/US20120285662A1/en
Assigned to Celsia Technologies Taiwan, Inc. reassignment Celsia Technologies Taiwan, Inc. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, CHIEH-PING, CHIN, TE-HSUAN, HSIEH, MING-KUEI, MEYER IV, GEORGE ANTHONY, SUN, CHIEN-HUNG
Publication of US20120285662A1 publication Critical patent/US20120285662A1/en
Abandoned legal-status Critical Current

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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
    • F28D15/04—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
    • 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
    • F28D15/0283—Means for filling or sealing heat pipes

Definitions

  • the invention relates to heat pipes, particularly to vapor chambers.
  • Vapor chambers are a variant type of heat pipe. Because of lightness and thinness, vapor chambers are widely applied in portable electronic apparatuses.
  • a conventional vapor chamber includes a casing, wick structure, working fluid and filling/degassing tube.
  • the casing has a chamber therein.
  • the wick structure and working fluid are disposed in the chamber.
  • the filling/degassing tube is connected with the casing and protrudent from the chamber.
  • the filling/degassing tube is used for filling the working fluid into the casing and degassing the air in the casing. After that, the filling/degassing tube have to be sealed by welding.
  • the protrudent filling/degassing tube When a vapor chamber is installed in an electronic apparatus, the protrudent filling/degassing tube usually interferes with other components or mechanisms. This may limit availability of vapor chambers. Further, the protrudent filling/degassing tube tends to be damaged by unexpected collisions or pressure when assembling.
  • An object of the invention is to provide a vapor chamber, which is easy to make a sealed end of the filling/degassing tube and avoids the tube from interfering with other components by the tube with the casing.
  • the vapor chamber of the invention includes a casing, wick structure, working fluid and filling/degassing tube.
  • the casing is composed of two plates and has a chamber therein.
  • the wick structure and working fluid are disposed in the chamber.
  • the filling/degassing tube is connected with the casing to form a passage communicating with the chamber. A portion of the plates which overlaps the filling/degassing tube is pressed to deform for making the passage closed. And the outer end of the filling/degassing tube is flush with the side of the casing.
  • An advantage of the invention is to provide an option of the second cutting, which may increase availability of vapor chambers. Besides, the manufacturing cost and process can also be reduced and simplified, respectively.
  • FIG. 1 is a perspective view of the invention
  • FIG. 2 is a perspective view of the invention before the filling/degassing tube is machined;
  • FIG. 3 is a cross-sectional view of the invention before the filling/degassing tube is pressedly machined;
  • FIG. 4 is a cross-sectional view of the invention after the filling/degassing tube is pressedly machined;
  • FIG. 5 is a cross-sectional view of the invention before the filling/degassing tube is cut;
  • FIG. 6 is a perspective view of another embodiment of the invention.
  • FIG. 7 is a cross-sectional view of the embodiment shown in FIG. 6 .
  • the vapor chamber of the invention includes a casing 10 , a wick structure 20 , a working fluid 30 and a filling/degassing tube 40 .
  • the casing 10 is made of copper or copper alloy.
  • the casing 10 is composed of an upper plate 11 and a lower plate 12 .
  • Each of the two plates 11 , 12 is of a substantially rectangular shape.
  • a periphery of the overlapping plates 11 , 12 is sealed by welding to form a chamber 13 therein.
  • An angle of the casing 10 is formed with a truncated angle 14 .
  • the upper plate 11 is arced at the truncated angle 14 to form an insert channel 15 which communicates with the chamber 13 .
  • the wick structure 20 may be metal mesh, fiber bundle or sintered metal powder. It is attached on the plates 11 , 12 in the chamber 13 .
  • the wick structure 20 provides a capillary force to make liquid working fluid 30 flow back.
  • the work fluid 30 may be water and is filled in the chamber 13 . Under a room temperature, the work fluid 30 is liquid absorbed in the wick structure 20 . The work fluid 30 will be vaporized to flow upwards.
  • the filling/degassing tube 40 has a semicircular cross-section. A portion of the filling/degassing tube 40 is inserted into the insert channel 15 and firmly connected therewith, and the other portion is exposed and protrudent from the plates 11 , 12 .
  • the filling/degassing tube 40 is provided with a passage 41 which communicates with the chamber 13 .
  • FIGS. 2-5 Please refer to FIGS. 2-5 .
  • a press machine is employed to press the upper plate 11 at the location of filling/degassing tube 40 .
  • the upper plate 11 and the filling/degassing tube 40 will be deformed to make the passage 41 closed and to form a groove 16 in the upper plate 11 .
  • the groove 16 has a U-shaped cross-section.
  • a knife 8 as shown in FIG. 5 is employed to cut a portion of the filling/degassing tube 40 which is protrudent from the truncated angle 14 of the casing 10 . This can flush an outer end of the filling/degassing tube 40 and the casing 10 .
  • FIGS. 6 and 7 illustrate another embodiment of the invention.
  • the knife 8 may be used to perform a second cut to the groove 16 in the above embodiment to form a new groove 16 ′.
  • the new groove 16 ′ has a substantially L-shaped cross-section. This may further decrease a size of the filling/degassing tube 40 to expand availability in small apparatuses.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The vapor chamber includes a casing, wick structure, working fluid and filling/degassing tube. The casing is composed of two plates and has a chamber therein. The wick structure and working fluid are disposed in the chamber. The filling/degassing tube is connected with the casing to form a passage communicating with the chamber. A portion of the plates which overlaps the filling/degassing tube is pressed to deform for making the passage closed. And the outer end of the filling/degassing tube is flush with the side of the casing.

Description

    BACKGROUND OF THE INVENTION
  • 1. Technical Field
  • The invention relates to heat pipes, particularly to vapor chambers.
  • 2. Related Art
  • Vapor chambers are a variant type of heat pipe. Because of lightness and thinness, vapor chambers are widely applied in portable electronic apparatuses.
  • A conventional vapor chamber includes a casing, wick structure, working fluid and filling/degassing tube. The casing has a chamber therein. The wick structure and working fluid are disposed in the chamber. The filling/degassing tube is connected with the casing and protrudent from the chamber. The filling/degassing tube is used for filling the working fluid into the casing and degassing the air in the casing. After that, the filling/degassing tube have to be sealed by welding.
  • When a vapor chamber is installed in an electronic apparatus, the protrudent filling/degassing tube usually interferes with other components or mechanisms. This may limit availability of vapor chambers. Further, the protrudent filling/degassing tube tends to be damaged by unexpected collisions or pressure when assembling.
    • SUMMARY OF THE INVENTION
  • An object of the invention is to provide a vapor chamber, which is easy to make a sealed end of the filling/degassing tube and avoids the tube from interfering with other components by the tube with the casing.
  • To accomplish the above object, the vapor chamber of the invention includes a casing, wick structure, working fluid and filling/degassing tube. The casing is composed of two plates and has a chamber therein. The wick structure and working fluid are disposed in the chamber. The filling/degassing tube is connected with the casing to form a passage communicating with the chamber. A portion of the plates which overlaps the filling/degassing tube is pressed to deform for making the passage closed. And the outer end of the filling/degassing tube is flush with the side of the casing.
  • An advantage of the invention is to provide an option of the second cutting, which may increase availability of vapor chambers. Besides, the manufacturing cost and process can also be reduced and simplified, respectively.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of the invention;
  • FIG. 2 is a perspective view of the invention before the filling/degassing tube is machined;
  • FIG. 3 is a cross-sectional view of the invention before the filling/degassing tube is pressedly machined;
  • FIG. 4 is a cross-sectional view of the invention after the filling/degassing tube is pressedly machined;
  • FIG. 5 is a cross-sectional view of the invention before the filling/degassing tube is cut;
  • FIG. 6 is a perspective view of another embodiment of the invention; and
  • FIG. 7 is a cross-sectional view of the embodiment shown in FIG. 6.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • Please refer to FIG. 1. The vapor chamber of the invention includes a casing 10, a wick structure 20, a working fluid 30 and a filling/degassing tube 40.
  • The casing 10 is made of copper or copper alloy. In this embodiment, the casing 10 is composed of an upper plate 11 and a lower plate 12. Each of the two plates 11,12 is of a substantially rectangular shape. A periphery of the overlapping plates 11,12 is sealed by welding to form a chamber 13 therein. An angle of the casing 10 is formed with a truncated angle 14. The upper plate 11 is arced at the truncated angle 14 to form an insert channel 15 which communicates with the chamber 13.
  • The wick structure 20 may be metal mesh, fiber bundle or sintered metal powder. It is attached on the plates 11,12 in the chamber 13. The wick structure 20 provides a capillary force to make liquid working fluid 30 flow back.
  • The work fluid 30 may be water and is filled in the chamber 13. Under a room temperature, the work fluid 30 is liquid absorbed in the wick structure 20. The work fluid 30 will be vaporized to flow upwards.
  • The filling/degassing tube 40 has a semicircular cross-section. A portion of the filling/degassing tube 40 is inserted into the insert channel 15 and firmly connected therewith, and the other portion is exposed and protrudent from the plates 11,12. The filling/degassing tube 40 is provided with a passage 41 which communicates with the chamber 13.
  • Please refer to FIGS. 2-5. After the work fluid has been filed in the chamber 13 of the casing 10 and the air in the chamber 13 has been removed out, A press machine is employed to press the upper plate 11 at the location of filling/degassing tube 40. As a result, the upper plate 11 and the filling/degassing tube 40 will be deformed to make the passage 41 closed and to form a groove 16 in the upper plate 11. In the shown embodiment, the groove 16 has a U-shaped cross-section. After that, a knife 8 as shown in FIG. 5 is employed to cut a portion of the filling/degassing tube 40 which is protrudent from the truncated angle 14 of the casing 10. This can flush an outer end of the filling/degassing tube 40 and the casing 10.
  • Please refer to FIGS. 6 and 7, which illustrate another embodiment of the invention. The knife 8 may be used to perform a second cut to the groove 16 in the above embodiment to form a new groove 16′. The new groove 16′ has a substantially L-shaped cross-section. This may further decrease a size of the filling/degassing tube 40 to expand availability in small apparatuses.
  • It will be appreciated by persons skilled in the art that the above embodiments have been described by way of example only and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the invention as defined by the appended claims.

Claims (8)

1. A vapor chamber comprising:
a casing, composed of two plates, and having a chamber therein;
a wick structure disposed in the chamber;
a work fluid filled in the chamber; and
a filling/degassing tube, connected with the casing, and having a passage communicating with the chamber;
wherein a portion of the casing which overlaps the filling/degassing tube is pressed to deform for making the passage closed, and an outer end of the filling/degassing tube is flush with a side of the casing.
2. The vapor chamber of claim 1, wherein the casing is a substantial rectangle in shape, an angle of the casing is formed with a truncated angle, an insert channel for being inserted by the filling/degassing tube is formed at the truncated angle.
3. The vapor chamber of claim 2, wherein an outer end of the filling/degassing tube is flush with a side of the truncated angle.
4. The vapor chamber of claim 1, wherein the wick structure is a metal mesh, fiber bundle or sintered metal powder.
5. The vapor chamber of claim 1, wherein the filling/degassing tube has a semicircular cross-section.
6. The vapor chamber of claim 1, wherein one of the plates is pressed to form a groove.
7. The vapor chamber of claim 6, wherein the groove has a U-shaped cross-section.
8. The vapor chamber of claim 6, wherein the groove has a L-shaped cross-section.
US13/104,239 2011-05-10 2011-05-10 Vapor chamber with improved sealed opening Abandoned US20120285662A1 (en)

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Cited By (14)

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US20130284395A1 (en) * 2012-04-27 2013-10-31 Keihin Thermal Technology Corporation Heat exchanger with thermal storage function and method of manufacturing the same
US20140251580A1 (en) * 2011-11-17 2014-09-11 Behr Gmbh & Co. Kg Method for closing a collecting tank
US20150121945A1 (en) * 2013-11-01 2015-05-07 Keihin Thermal Technology Corporation Heat exchanger with thermal storage function
US20170059254A1 (en) * 2015-08-25 2017-03-02 Champ Tech Optical (Foshan) Corporation Vapor chamber
US20170350657A1 (en) * 2016-06-02 2017-12-07 Tai-Sol Electronics Co., Ltd. Heat spreader with a liquid-vapor separation structure
CN108731523A (en) * 2017-04-21 2018-11-02 新光电气工业株式会社 Heat pipe and the method for manufacturing heat pipe
TWI645152B (en) * 2017-11-24 2018-12-21 泰碩電子股份有限公司 Manufacturing method of temperature-free plate without degassing tube
US10371458B2 (en) * 2016-04-07 2019-08-06 Cooler Master Co., Ltd. Thermal conducting structure
US20190249928A1 (en) * 2018-02-13 2019-08-15 Asia Vital Components Co., Ltd. Vapor chamber water-filling section sealing structure
US11079183B2 (en) * 2017-01-27 2021-08-03 Furukawa Electric Co., Ltd. Vapor chamber
US11092383B2 (en) * 2019-01-18 2021-08-17 Asia Vital Components Co., Ltd. Heat dissipation device
TWI747083B (en) * 2019-11-22 2021-11-21 大陸商深圳興奇宏科技有限公司 Vapor chamber having sealing structure
US20220260322A1 (en) * 2021-02-12 2022-08-18 Abb Schweiz Ag Blank for a heat-transfer device and method to produce a heat-transfer device
US20230221077A1 (en) * 2022-01-13 2023-07-13 Nidec Chaun-Choung Technology Corporation Integrated vapor chamber and manufacturing method thereof

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140251580A1 (en) * 2011-11-17 2014-09-11 Behr Gmbh & Co. Kg Method for closing a collecting tank
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