US20070089376A1 - Connection of Fill Tube to a Two-Phase Heat Dissipation Device - Google Patents

Connection of Fill Tube to a Two-Phase Heat Dissipation Device Download PDF

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Publication number
US20070089376A1
US20070089376A1 US11/426,049 US42604906A US2007089376A1 US 20070089376 A1 US20070089376 A1 US 20070089376A1 US 42604906 A US42604906 A US 42604906A US 2007089376 A1 US2007089376 A1 US 2007089376A1
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US
United States
Prior art keywords
fill tube
squeezer
describe
heat dissipation
connection
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
US11/426,049
Inventor
Shwin-Chung Wong
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National Tsing Hua University NTHU
Original Assignee
National Tsing Hua University NTHU
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 National Tsing Hua University NTHU filed Critical National Tsing Hua University NTHU
Assigned to NATIONAL TSING HUA UNIVERSITY reassignment NATIONAL TSING HUA UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WONG, SHWIN-CHUNG
Publication of US20070089376A1 publication Critical patent/US20070089376A1/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
    • F28D15/0283—Means for filling or sealing heat pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/09—Heat pipes

Definitions

  • This invention relates to the installation of a fill tube in two-phase heat dissipation devices, such as flat plate heat pipes, loop heat pipes, capillary pumped loops, spray cooling devices, et al., which need to be evacuated and filled with working fluids.
  • two-phase heat dissipation devices such as flat plate heat pipes, loop heat pipes, capillary pumped loops, spray cooling devices, et al., which need to be evacuated and filled with working fluids.
  • the interior of two-phase heat dissipation devices such as flat plate heat pipes, loop heat pipes, capillary pumped loops, spray cooling devices, et al., must be free from non-condensable gases. Therefore, hermetic sealing is required for the containers. Also, the connection between the container and the fill tube, through which evacuation and filling of the working fluid is performed carefully, must be hermetic. Afterwards, the sealing is completed by pinching off the fill tube. Conventionally, the hermetic connection between the container and the fill tube is handled by soldering, brazing, or welding. However, these methods are carried out at a relative high temperature working conditions. The procedure as well as the equipment is more complicated. Moreover, when the working temperature is above the anneal temperature, the rigidity of the container decreases seriously.
  • This invention disclosed a simple cold-work method for hermetic connection of the fill tube to the container at a relatively low temperature. Not only the rigidity of the container can be maintained, but also the cost can be reduced with simpler procedure and equipment.
  • FIG. 1 shows step 1 of a first embodiment according to the present invention, a fill tube inserting into a hole on the wall of the container.
  • FIG. 2 shows step 2 of the first embodiment, a squeezer inserting into the fill tube.
  • FIG. 3 shows a different squeezer can be used according to the present invention.
  • FIG. 4 shows an interfacial layer can be inserted in between the connection surface before connection according to the present invention.
  • a cold-work procedure to connect a fill tube to a container at a relatively low working temperature, or room temperature, is disclosed. Under this low temperature connection procedure, the rigidity of the container is maintained, and the cost is reduced with a simpler procedure and equipment.
  • FIG. 1 shows step 1 to put the fill tube 3 into a hole of the container wall 1 of a two-phase heat dissipation device.
  • FIG. 2 shows step 2 , when a squeezer 4 a is inserted into the fill tube 3 .
  • the front section 7 of a cylindrical fill tube 3 is inserted into a hole 2 in the metal container wall 1 .
  • the inner diameter of the hole 2 is slightly larger than the outer diameter of the front section 7 of the fill tube 3 .
  • the surfaces of the connecting parts should be cleaned beforehand.
  • a cylindrical squeezer 4 a having a diameter somewhat larger than the inner diameter of the front section 7 of the fill tube 3 is squeezed in to cause permanent plastic deformation of the front section of the fill tube 3 and hermetic connection between the fill tube 3 and the container wall 1 , as shown in FIG. 2 .
  • the squeezer 4 a is withdrawn to finish the cold connection.
  • fixing of the fill tube 3 is needed as the squeezer is being squeezed in and withdrawn.
  • the extension section 8 of the fill tube 3 has a larger diameter than that of the front section 7 for easy movement of the squeezer 4 a .
  • the fill tube 3 is annealed beforehand for easy deformation.
  • the fixer 5 is used to clamp the container wall 1 and restrict its deformation so that only the front section 7 of the fill tube 3 is deformed. Spinning of the squeezer 4 a while it is moved in and out can make the process smoother.
  • FIG. 3 discloses a screw-type squeezer 4 b can be used alternatively. To screw the squeezer 4 b in causing permanent deformation and hermetic connection of the fill tube 3 into the container wall 1 . Again, fixing of the fill tube 3 is needed as the squeezer is squeezed in and withdrawn.
  • FIG. 4 indicates that a layer of interfacial material 6 can be put between the surface of the front section 7 of the fill tube 3 and the container wall 1 .
  • the interfacial material 6 can be soft metals, such as lead, tin, or lead-tin alloy, etc.; soft non-metals, such as a plastic sheet, a rubber sheet, or a silicone rubber sheet, etc.; or binding agents, such as epoxy resin or silicone resin, etc.

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

Abstract

This invention discloses a cold-work method to connect the metal wall of a two-phase heat dissipation device with a fill tube. First, place the fill tube into a hole prepared in the wall, then push a squeezer slightly larger than the inner diameter of the fill tube to create permanent deformation and hence hermetical bonding thereof. Finally, draw out the squeezer to finish the cold work. This method simplifies the procedure and equipment by avoiding a relatively high-temperature soldering or brazing process.

Description

    BACKGROUND OF THE INVENTION
  • (1) Field of the Invention
  • This invention relates to the installation of a fill tube in two-phase heat dissipation devices, such as flat plate heat pipes, loop heat pipes, capillary pumped loops, spray cooling devices, et al., which need to be evacuated and filled with working fluids.
  • (2) Brief Description of Related Art
  • The interior of two-phase heat dissipation devices, such as flat plate heat pipes, loop heat pipes, capillary pumped loops, spray cooling devices, et al., must be free from non-condensable gases. Therefore, hermetic sealing is required for the containers. Also, the connection between the container and the fill tube, through which evacuation and filling of the working fluid is performed carefully, must be hermetic. Afterwards, the sealing is completed by pinching off the fill tube. Conventionally, the hermetic connection between the container and the fill tube is handled by soldering, brazing, or welding. However, these methods are carried out at a relative high temperature working conditions. The procedure as well as the equipment is more complicated. Moreover, when the working temperature is above the anneal temperature, the rigidity of the container decreases seriously.
    • SUMMARY OF THE INVENTION
  • This invention disclosed a simple cold-work method for hermetic connection of the fill tube to the container at a relatively low temperature. Not only the rigidity of the container can be maintained, but also the cost can be reduced with simpler procedure and equipment.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows step 1 of a first embodiment according to the present invention, a fill tube inserting into a hole on the wall of the container.
  • FIG. 2 shows step 2 of the first embodiment, a squeezer inserting into the fill tube.
  • FIG. 3 shows a different squeezer can be used according to the present invention.
  • FIG. 4 shows an interfacial layer can be inserted in between the connection surface before connection according to the present invention.
    • DETAILED DESCRIPTION OF THE INVENTION
  • A cold-work procedure to connect a fill tube to a container at a relatively low working temperature, or room temperature, is disclosed. Under this low temperature connection procedure, the rigidity of the container is maintained, and the cost is reduced with a simpler procedure and equipment.
  • FIG. 1 shows step 1 to put the fill tube 3 into a hole of the container wall 1 of a two-phase heat dissipation device. FIG. 2 shows step 2, when a squeezer 4 a is inserted into the fill tube 3. The front section 7 of a cylindrical fill tube 3 is inserted into a hole 2 in the metal container wall 1. The inner diameter of the hole 2 is slightly larger than the outer diameter of the front section 7 of the fill tube 3. The surfaces of the connecting parts should be cleaned beforehand. With the container wall 1 clamped with a fixer 5, a cylindrical squeezer 4 a having a diameter somewhat larger than the inner diameter of the front section 7 of the fill tube 3 is squeezed in to cause permanent plastic deformation of the front section of the fill tube 3 and hermetic connection between the fill tube 3 and the container wall 1, as shown in FIG. 2. Afterwards, the squeezer 4 a is withdrawn to finish the cold connection. Although not shown in FIG. 2, fixing of the fill tube 3 is needed as the squeezer is being squeezed in and withdrawn. The extension section 8 of the fill tube 3 has a larger diameter than that of the front section 7 for easy movement of the squeezer 4 a. Preferably, the fill tube 3 is annealed beforehand for easy deformation. The fixer 5 is used to clamp the container wall 1 and restrict its deformation so that only the front section 7 of the fill tube 3 is deformed. Spinning of the squeezer 4 a while it is moved in and out can make the process smoother.
  • FIG. 3 discloses a screw-type squeezer 4 b can be used alternatively. To screw the squeezer 4 b in causing permanent deformation and hermetic connection of the fill tube 3 into the container wall 1. Again, fixing of the fill tube 3 is needed as the squeezer is squeezed in and withdrawn.
  • FIG. 4 indicates that a layer of interfacial material 6 can be put between the surface of the front section 7 of the fill tube 3 and the container wall 1. The interfacial material 6 can be soft metals, such as lead, tin, or lead-tin alloy, etc.; soft non-metals, such as a plastic sheet, a rubber sheet, or a silicone rubber sheet, etc.; or binding agents, such as epoxy resin or silicone resin, etc.
  • While the preferred embodiments of the invention have been described, it will be apparent to those skilled in the art that various modifications may be made without departing from the spirit of the present invention. Such modifications are all within the scope of this invention.

Claims (7)

1. A method to hermetically connect a fill tube to the metal container wall of a two-phase heat dissipation device, comprises the steps of:
(1) placing a front section of said fill tube into a hole prepared in said container wall;
(2) forcing a squeezer with diameter somewhat larger than the inner diameter of said front section of said fill tube into said front section of said fill tube, to cause permanent plastic deformation of said fill tube; and
(3) drawing out said squeezer.
2. A method as describe in claim 1, wherein said squeezer is a cylindrical object.
3. The method as describe in claim 1, wherein said squeezer is a screw-type cylindrical object.
4. The method as describe in claim 1, wherein an interfacial material is added between the connecting surfaces of said fill tube and said container wall.
5. The method as describe in claim 4, wherein said interfacial material is a deformable metal.
6. The method as describe in claim 4, wherein said interfacial material is a deformable non-metal.
7. The method as describe in claim 4, wherein said interfacial material is a binding agent.
US11/426,049 2005-10-12 2006-06-23 Connection of Fill Tube to a Two-Phase Heat Dissipation Device Abandoned US20070089376A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW094135544 2005-10-12
TW094135544A TWI298384B (en) 2005-10-12 2005-10-12 Connection of filling tube to a two-phase heat dissipation device

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US20070089376A1 true US20070089376A1 (en) 2007-04-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150121945A1 (en) * 2013-11-01 2015-05-07 Keihin Thermal Technology Corporation Heat exchanger with thermal storage function
US11097385B2 (en) * 2016-06-29 2021-08-24 Compagnie Generale Des Etablissements Michelin Method for producing a heat pipe
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
US11796258B2 (en) * 2017-10-12 2023-10-24 Microsoft Technology Licensing, Llc Sealing a heat pipe

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545527A (en) * 1947-06-21 1951-03-20 Babcock & Wilcox Co Method of forming an expanded tube and tube seat connection with an intervening metallic bonding stratum of low fusion temperature
US3269006A (en) * 1964-08-20 1966-08-30 Besly Welles Corp Method of swaging metal tubes onto internal members
US3449812A (en) * 1966-01-24 1969-06-17 Kotthaus & Busch Method of securing tube end portions in bores of a heavy plate by pilgrim step rolling
US3566947A (en) * 1969-04-29 1971-03-02 John A Jukes Self-locking threaded insert
US3913421A (en) * 1974-06-05 1975-10-21 Du Pont Method for installing a capillary insert in a passage through a spinneret
US4204312A (en) * 1977-02-11 1980-05-27 Serck Industries Limited Method and apparatus for joining a tubular element to a support
US4453301A (en) * 1980-11-17 1984-06-12 United Aircraft Products, Inc. Sealing mechanical tube joints
US4482415A (en) * 1980-11-17 1984-11-13 United Aircraft Products, Inc. Sealing mechanical tube joints
US4897908A (en) * 1984-03-20 1990-02-06 Asea Stal Ab Method of attaching tubes in a tube plate in a heat exchanger
US5129253A (en) * 1990-01-26 1992-07-14 Bell Helicopter Textron Inc. Antifretting coating for a bushing in a coldworked joint
US5487573A (en) * 1993-11-19 1996-01-30 Itt Corporation Unitary assembly of tubing and a pressed on, interference fit, terminating fitting
US5564184A (en) * 1994-02-02 1996-10-15 Heat Pipe Technology, Inc. Method for making heat pipes
US5722312A (en) * 1993-01-18 1998-03-03 Danfoss A/S Process for mounting a cylinder sleeve in a base member, and a hydraulic machine
US5752313A (en) * 1993-12-20 1998-05-19 Carrier Corporation Tube expander with force sensor
US5885318A (en) * 1995-02-17 1999-03-23 Tanaka Kikinzoku Kogyo K.K. Bushing base plate and process of preparing same
US6138747A (en) * 1999-02-17 2000-10-31 Dehr Heat Transfer System, Inc. Heat exchanger tube to header swaging process
US6328073B1 (en) * 1998-08-07 2001-12-11 Automotive Fluid Systems, Inc. Fluid-tight conduit connection and method of making same
US6561077B2 (en) * 2001-04-09 2003-05-13 Delphi Technologies, Inc. System and process for assembling a tube in a connecting element, and servomotor housing including such a system
US20060208479A1 (en) * 2005-03-03 2006-09-21 Denso Corporation Pipe unit with connector and producing method thereof

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545527A (en) * 1947-06-21 1951-03-20 Babcock & Wilcox Co Method of forming an expanded tube and tube seat connection with an intervening metallic bonding stratum of low fusion temperature
US3269006A (en) * 1964-08-20 1966-08-30 Besly Welles Corp Method of swaging metal tubes onto internal members
US3449812A (en) * 1966-01-24 1969-06-17 Kotthaus & Busch Method of securing tube end portions in bores of a heavy plate by pilgrim step rolling
US3566947A (en) * 1969-04-29 1971-03-02 John A Jukes Self-locking threaded insert
US3913421A (en) * 1974-06-05 1975-10-21 Du Pont Method for installing a capillary insert in a passage through a spinneret
US4204312A (en) * 1977-02-11 1980-05-27 Serck Industries Limited Method and apparatus for joining a tubular element to a support
US4453301A (en) * 1980-11-17 1984-06-12 United Aircraft Products, Inc. Sealing mechanical tube joints
US4482415A (en) * 1980-11-17 1984-11-13 United Aircraft Products, Inc. Sealing mechanical tube joints
US4897908A (en) * 1984-03-20 1990-02-06 Asea Stal Ab Method of attaching tubes in a tube plate in a heat exchanger
US5129253A (en) * 1990-01-26 1992-07-14 Bell Helicopter Textron Inc. Antifretting coating for a bushing in a coldworked joint
US5722312A (en) * 1993-01-18 1998-03-03 Danfoss A/S Process for mounting a cylinder sleeve in a base member, and a hydraulic machine
US5487573A (en) * 1993-11-19 1996-01-30 Itt Corporation Unitary assembly of tubing and a pressed on, interference fit, terminating fitting
US5752313A (en) * 1993-12-20 1998-05-19 Carrier Corporation Tube expander with force sensor
US5564184A (en) * 1994-02-02 1996-10-15 Heat Pipe Technology, Inc. Method for making heat pipes
US5885318A (en) * 1995-02-17 1999-03-23 Tanaka Kikinzoku Kogyo K.K. Bushing base plate and process of preparing same
US6328073B1 (en) * 1998-08-07 2001-12-11 Automotive Fluid Systems, Inc. Fluid-tight conduit connection and method of making same
US6138747A (en) * 1999-02-17 2000-10-31 Dehr Heat Transfer System, Inc. Heat exchanger tube to header swaging process
US6178636B1 (en) * 1999-02-17 2001-01-30 Behr Heat Transfer Systems, Inc. Heat exchanger tube to header swaging process
US6561077B2 (en) * 2001-04-09 2003-05-13 Delphi Technologies, Inc. System and process for assembling a tube in a connecting element, and servomotor housing including such a system
US20060208479A1 (en) * 2005-03-03 2006-09-21 Denso Corporation Pipe unit with connector and producing method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150121945A1 (en) * 2013-11-01 2015-05-07 Keihin Thermal Technology Corporation Heat exchanger with thermal storage function
US9863652B2 (en) * 2013-11-01 2018-01-09 Keihin Thermal Technology Corporation Heat exchanger with thermal storage function
US11097385B2 (en) * 2016-06-29 2021-08-24 Compagnie Generale Des Etablissements Michelin Method for producing a heat pipe
US11796258B2 (en) * 2017-10-12 2023-10-24 Microsoft Technology Licensing, Llc Sealing a heat pipe
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
US12066255B2 (en) * 2021-02-12 2024-08-20 Abb Schweiz Ag Blank for a heat-transfer device and method to produce a heat-transfer device

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Publication number Publication date
TW200714860A (en) 2007-04-16
TWI298384B (en) 2008-07-01

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Owner name: NATIONAL TSING HUA UNIVERSITY, CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WONG, SHWIN-CHUNG;REEL/FRAME:017832/0669

Effective date: 20060609

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION