WO2010144811A1 - Liaison thermique à différence de température nulle - Google Patents

Liaison thermique à différence de température nulle Download PDF

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Publication number
WO2010144811A1
WO2010144811A1 PCT/US2010/038328 US2010038328W WO2010144811A1 WO 2010144811 A1 WO2010144811 A1 WO 2010144811A1 US 2010038328 W US2010038328 W US 2010038328W WO 2010144811 A1 WO2010144811 A1 WO 2010144811A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigeration
self
transferring
working
cryogenic
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.)
Ceased
Application number
PCT/US2010/038328
Other languages
English (en)
Inventor
Andrew Painter
Yeon Suk Choi
Dong Lak Kim
Hongyu Bai
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.)
Korea Basic Science Institute KBSI
Florida State University
Original Assignee
Korea Basic Science Institute KBSI
Florida State University
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 Korea Basic Science Institute KBSI, Florida State University filed Critical Korea Basic Science Institute KBSI
Publication of WO2010144811A1 publication Critical patent/WO2010144811A1/fr
Anticipated expiration legal-status Critical
Priority to US13/316,820 priority Critical patent/US20120137707A1/en
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/006—Thermal coupling structure or interface

Definitions

  • This invention relates to cryogenic refrigeration. More specifically, it relates to the transfer of heat from a fixed location, such as a cryocooler, to a remote location, such as a superconducting magnet.
  • Applying refrigeration to remote locations in a cryostat typically involves constructing conduction paths from fixed copper links and using liquid cryogens provided by an open or closed loop.
  • the fixed copper links create thermal and mechanical loads.
  • the fixed copper links generate vibrations and are relatively complicated to install and use.
  • the novel apparatus transfers cryogenic refrigeration from a fixed location to a remote location.
  • the apparatus generally includes a cryocooler interface, a housing having a self- contained volume of working fluid, a heat exchanger, a flexible thermal link, and a remote cartridge cold head.
  • the cryocooler interface is disposed on the surface of the housing and in thermal communication with the heat exchanger.
  • the heat exchanger is disposed within the housing and in thermal communication with the self-contained volume of working fluid.
  • the flexible thermal link extends from, and is in thermal communication with, the housing.
  • the remote cartridge cold head is in thermal communication with the flexible link and provides a heat transfer surface.
  • the cryocooler interface is thermally connected to a cryocooler providing refrigeration.
  • the refrigeration is passed from the cryocooler into the heat exchanger via the cryocooler interface.
  • the remote cartridge cold head is attached to a remote location. Heat is drawn from the remote location through the remote cartridge cold head and into the heat exchanger via the working fluid within the flexible thermal link and housing. Within the heat exchanger, heat is transferred from the working fluid to the cryocooler and is replaced by refrigeration from the cryocooler; accordingly, the remote location is cooled.
  • the figure is an elevated, diagrammatic view of an embodiment of the invention.
  • the present invention is an apparatus for transferring cryogenic refrigeration from a fixed location, such as a cryocooler, to a remote location, such as a superconducting magnet.
  • the apparatus generally includes cryocooler interface 10, housing 30, working fluid 25, heat exchanger 20, flexible thermal link 50, and remote cartridge cold head
  • Cryocooler interface 10 is disposed on the surface of housing 30 and in thermal communication with heat exchanger 20.
  • Heat exchanger 20 is disposed within housing 30 and in thermal communication with the self-contained volume of working fluid 25.
  • Flexible thermal link 50 extends from, and is in thermal communication with, housing 30.
  • Remote cartridge cold head 60 is in thermal communication with flexible link 50 and provides a heat transfer surface.
  • the novel apparatus provides transfer of fixed position cold head refrigeration to remote locations from the cryocooler and other sources of refrigeration at various cryogenic temperatures. It also provides refrigeration at remote locations for both high-temperature and low-temperature superconducting magnets and devices as well as for other cryogenic components with zero or essentially zero temperature rise from the original source of refrigeration.
  • the apparatus uses a working fluid that is self-contained. This eliminates complicated liquid or gas handling operational requirements. No gas bottles or liquid cryogen handling is required to implement and operate this device.
  • the apparatus minimizes vibration transfer from the source of the refrigeration to the cryogenic component. It also minimizes thermal and other types of mechanical loads on the source of refrigeration. This reduces risk of damage dramatically in the case of thin-walled tubes in cryocoolers.
  • cryocooler 15 provides the fixed source of refrigeration.
  • the apparatus will work with other sources of refrigeration.
  • Cryocooler interface 10 connects directly to cryocooler 15.
  • the refrigeration from cryocooler 15 passes through cyrocooler interface 10 and into heat exchanger 20.
  • Heat exchanger 20 facilitates the transfer of heat from working fluid 25 to the refrigeration.
  • the heat transfer causes working fluid 25 to condense into the liquid phase.
  • Housing 30 contains a self-contained volume of working fluid 25 so that an operator does not need to transfer cryogens.
  • Charging nozzle 40 places the required mass of working fluid 25 into housing 30.
  • Flexible thermal link 50 transfers working fluid 25 from housing 30 to a location remote of cryocooler 15.
  • Remote cartridge cold head 60 provides a heat transfer surface at the remote location.
  • cryocooler interface 10 is thermally connected to cryocooler 15.
  • Cryocooler 15 provides refrigeration.
  • the refrigeration is passed from crycooler 15 into heat exchanger 20 via cryocooler interface 10.
  • Remote cartridge cold head 60 is attached to a remote location. Heat is drawn from the remote location through remote cartridge cold head 60 and into heat exchanger 20 via working fluid 25 within flexible thermal link 50 and housing 30.
  • Working fluid 25, containing heat from the remote location travels up flexible thermal link 50 and housing 30 and into heat exchanger 20.
  • heat is transferred from working fluid 25 to cryocooler 15.
  • charging nozzle 40 is used only once during manufacturing and places the required mass of working fluid 25 into housing 30. Accordingly, working fluid 25 is a self-contained volume and an operator does not need to transfer or otherwise handle cryogens.
  • Working fluid 25 is preferably helium, hydrogen, methane, nitrogen, oxygen, neon or fluorine or a combination thereof.
  • Remote cartridge cold head 60 preferably includes at least one hole to facilitate heat transfer. Moreover, to further facilitate heat transfer, remote cartridge cold head 60 is formed from a high thermal conducting material. In the figure, remote cartridge cold head 60 is depicted as a long cylinder but may be of any predetermined geometric shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention porte sur un appareil pour transférer une réfrigération cryogénique, qui comprend une interface de cryoréfrigérateur, un boîtier, un fluide de travail, un échangeur de chaleur, une liaison thermique souple et une tête froide de cartouche distante. L'interface de cryoréfrigérateur est reliée thermiquement à un cryoréfrigérateur délivrant une source de réfrigération. La réfrigération est passée à partir du cryoréfrigérateur dans l'échangeur de chaleur par l'intermédiaire de l'interface de cryoréfrigérateur. La tête froide de cartouche distante est fixée à un emplacement distant. De la chaleur est aspirée à partir de l'emplacement distant à travers la tête froide de cartouche distante et dans l'échangeur de chaleur par l'intermédiaire du fluide de travail à l'intérieur de la liaison thermique souple et du boîtier. A l'intérieur de l'échangeur de chaleur, de la chaleur est transférée du fluide de travail à la source de réfrigération, du type cryoréfrigérateur, ce qui permet de refroidir l'emplacement distant.
PCT/US2010/038328 2009-06-11 2010-06-11 Liaison thermique à différence de température nulle Ceased WO2010144811A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/316,820 US20120137707A1 (en) 2009-06-11 2011-12-12 Zero delta temperature thermal link

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18624709P 2009-06-11 2009-06-11
US61/186,247 2009-06-11

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/316,820 Continuation US20120137707A1 (en) 2009-06-11 2011-12-12 Zero delta temperature thermal link

Publications (1)

Publication Number Publication Date
WO2010144811A1 true WO2010144811A1 (fr) 2010-12-16

Family

ID=43309242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/038328 Ceased WO2010144811A1 (fr) 2009-06-11 2010-06-11 Liaison thermique à différence de température nulle

Country Status (2)

Country Link
US (1) US20120137707A1 (fr)
WO (1) WO2010144811A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
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US6330800B1 (en) * 1999-04-16 2001-12-18 Raytheon Company Apparatus and method for achieving temperature stability in a two-stage cryocooler
US20050274124A1 (en) * 2004-06-15 2005-12-15 Cryomech, Inc. Multi-stage pulse tube cryocooler

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US6330800B1 (en) * 1999-04-16 2001-12-18 Raytheon Company Apparatus and method for achieving temperature stability in a two-stage cryocooler
US20050274124A1 (en) * 2004-06-15 2005-12-15 Cryomech, Inc. Multi-stage pulse tube cryocooler

Also Published As

Publication number Publication date
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