US20120137707A1 - Zero delta temperature thermal link - Google Patents
Zero delta temperature thermal link Download PDFInfo
- Publication number
- US20120137707A1 US20120137707A1 US13/316,820 US201113316820A US2012137707A1 US 20120137707 A1 US20120137707 A1 US 20120137707A1 US 201113316820 A US201113316820 A US 201113316820A US 2012137707 A1 US2012137707 A1 US 2012137707A1
- Authority
- US
- United States
- 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.)
- Abandoned
Links
- 238000005057 refrigeration Methods 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052754 neon Inorganic materials 0.000 claims description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
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 60 .
- 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.
Abstract
Description
- This application is a continuation of international patent application No. PCT/US2010/038328, entitled “ZERO DELTA TEMPERATURE THERMAL LINK,” filed on Jun. 11, 2010, which claims priority to U.S. provisional patent application No. 61/186,247, with the same title, filed on Jun. 11, 2009, the contents of which are hereby incorporated by reference.
- 1. Field of the Invention
- 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.
- 2. Description of the Prior Art
- 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. Furthermore, the fixed copper links generate vibrations and are relatively complicated to install and use.
- What is needed in the art is an apparatus to eliminate the thermal and mechanical loads created by the fixed copper links.
- What is also needed is an apparatus to reduce the transfer of vibrations from the fixed copper links.
- Yet another need in the art exists for an apparatus that facilitates use when compared with the maintenance of liquid cryogens in an open system.
- Still another need in the art exists for an apparatus that facilitates installation in view of the installation of a complicate closed-loop cryogenic system.
- However, in view of the prior art considered as a whole at the time the present invention was made, it was not obvious to those of ordinary skill in the art how the limitations of the art could be overcome.
- The long-standing but heretofore unfulfilled need for an improved apparatus for transferring heat from a fixed location to a remote location is now met by a new, useful, and nonobvious invention.
- 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.
- In operation, 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.
- For a fuller understanding of the invention, reference should be made to the following detailed description, taken in connection with the accompanying drawings, in which:
- 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. As depicted in the FIGURE, the apparatus generally includes
cryocooler interface 10,housing 30, workingfluid 25,heat exchanger 20, flexiblethermal link 50, and remote cartridgecold head 60. Cryocoolerinterface 10 is disposed on the surface ofhousing 30 and in thermal communication withheat exchanger 20.Heat exchanger 20 is disposed withinhousing 30 and in thermal communication with the self-contained volume of workingfluid 25. Flexiblethermal link 50 extends from, and is in thermal communication with, housing 30. Remote cartridgecold head 60 is in thermal communication withflexible 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.
- In the FIGURE,
cryocooler 15 provides the fixed source of refrigeration. The apparatus, however, will work with other sources of refrigeration. Cryocoolerinterface 10 connects directly tocryocooler 15. The refrigeration fromcryocooler 15 passes throughcyrocooler interface 10 and intoheat exchanger 20.Heat exchanger 20 facilitates the transfer of heat from workingfluid 25 to the refrigeration. The heat transfer causes workingfluid 25 to condense into the liquid phase.Housing 30 contains a self-contained volume of workingfluid 25 so that an operator does not need to transfer cryogens. Chargingnozzle 40 places the required mass of workingfluid 25 intohousing 30. Flexiblethermal link 50transfers working fluid 25 fromhousing 30 to a location remote ofcryocooler 15. Remote cartridgecold head 60 provides a heat transfer surface at the remote location. - In operation,
cryocooler interface 10 is thermally connected tocryocooler 15. Cryocooler 15 provides refrigeration. The refrigeration is passed from crycooler 15 intoheat exchanger 20 viacryocooler interface 10. Remote cartridgecold head 60 is attached to a remote location. Heat is drawn from the remote location through remote cartridgecold head 60 and intoheat exchanger 20 via workingfluid 25 within flexiblethermal link 50 andhousing 30. Workingfluid 25, containing heat from the remote location, travels up flexiblethermal link 50 and housing 30 and intoheat exchanger 20. Withinheat exchanger 20, heat is transferred from workingfluid 25 tocryocooler 15. - In a preferred embodiment, charging
nozzle 40 is used only once during manufacturing and places the required mass of workingfluid 25 intohousing 30. Accordingly, workingfluid 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, remotecartridge cold head 60 is formed from a high thermal conducting material. In the FIGURE, remotecartridge cold head 60 is depicted as a long cylinder but may be of any predetermined geometric shape. - It will be seen that the advantages set forth above, and those made apparent from the foregoing description, are efficiently attained and since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matters contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Claims (14)
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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18624709P | 2009-06-11 | 2009-06-11 | |
PCT/US2010/038328 WO2010144811A1 (en) | 2009-06-11 | 2010-06-11 | Zero delta temperature thermal link |
US13/316,820 US20120137707A1 (en) | 2009-06-11 | 2011-12-12 | Zero delta temperature thermal link |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/038328 Continuation WO2010144811A1 (en) | 2009-06-11 | 2010-06-11 | Zero delta temperature thermal link |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120137707A1 true US20120137707A1 (en) | 2012-06-07 |
Family
ID=43309242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/316,820 Abandoned US20120137707A1 (en) | 2009-06-11 | 2011-12-12 | Zero delta temperature thermal link |
Country Status (2)
Country | Link |
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US (1) | US20120137707A1 (en) |
WO (1) | WO2010144811A1 (en) |
Citations (36)
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US5139496A (en) * | 1990-12-20 | 1992-08-18 | Hed Aharon Z | Ultrasonic freeze ablation catheters and probes |
US5365750A (en) * | 1992-12-18 | 1994-11-22 | California Aquarium Supply | Remote refrigerative probe |
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US20130152608A1 (en) * | 2011-12-16 | 2013-06-20 | Daniel X. Wray | Cryogenic injection compositions, systems and methods for cryogenically modulating flow in a conduit |
Also Published As
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WO2010144811A1 (en) | 2010-12-16 |
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