Cryocooler with ambient temperature surge volume
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IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0762867
(2004-01-22)
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발명자
/ 주소 |
- Kirkconnell,Carl S.
- Price,Kenneth D.
- Barr,Michael C.
- Finch,Anthony T.
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
6 인용 특허 :
10 |
초록
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A two-stage cryocooler (10) includes an ambient temperature portion (12), a first-stage temperature portion ( 14), and a second-stage temperature portion (16). The ambient temperature portion includes a surge volume (44) that is coupled to and in communication with the first-stage temperature portio
A two-stage cryocooler (10) includes an ambient temperature portion (12), a first-stage temperature portion ( 14), and a second-stage temperature portion (16). The ambient temperature portion includes a surge volume (44) that is coupled to and in communication with the first-stage temperature portion. The surge volume may be coupled to a first-stage interface (36) of the first-stage temperature portion by use of an inertance tube (42). Locating the surge volume in the ambient temperature portion may advantageously reduce size and mass of the first-stage temperature portion. Also, thermal losses may be reduced by maintaining the surge volume at ambient temperature. Space and structural requirements for maintaining the system may be met more easily with the surge volume maintained in the ambient temperature portion of the two-stage cooler. The surge volume may be a separate unit, or may be a plenum or other chamber within an expander in the ambient temperature portion.
대표청구항
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What is claimed is: 1. A hybrid multistage cryocooler comprising: a first-stage expander having a first-stage expander outlet; a first-stage thermal interface; a second-stage expander in communication with the first-stage expander outlet, via the first-stage thermal interface; and a surge volume i
What is claimed is: 1. A hybrid multistage cryocooler comprising: a first-stage expander having a first-stage expander outlet; a first-stage thermal interface; a second-stage expander in communication with the first-stage expander outlet, via the first-stage thermal interface; and a surge volume in communication with a second-stage expander outlet of the second-stage expander, via the first-stage thermal interface; wherein the surge volume is maintained at an ambient temperature. 2. The cryocooler of claim 1, further comprising an inertance tube coupling the surge volume to the first-stage thermal interface. 3. The cryocooler of claim 2, wherein a first end of the inertance tube is at the ambient temperature, and wherein a second end of the inertance tube is at a first-stage temperature that is lower than the ambient temperature. 4. The cryocooler of claim 2, wherein the inertance tube is thermally coupled to a cold cylinder surrounding an expansion volume that is in gaseous communication with the first-stage expander outlet. 5. The cryocooler of claim 1, wherein the first-stage expander is a Stirling expander. 6. The cryocooler of claim 5, wherein the Stirling expander includes: a cold cylinder surrounding an expansion volume that is in gaseous communication with the first-stage expander outlet; a displacer which forces a working gas through the expansion volume and a first-stage regenerator; and a motor that drives the displacer. 7. The cryocooler of claim 1, wherein the second-stage expander is a pulse tube expander. 8. The cryocooler of claim 7, wherein the pulse tube expander includes: a pulse tube inlet; a pulse tube gas volume in gaseous communication with the pulse tube inlet, the gas volume including a second-stage regenerator and a pulse tube gas column; and a second-stage heat exchanger in thermal communication with the second-stage regenerator and the pulse tube gas column. 9. The cryocooler of claim 1, wherein the first-stage thermal interface is maintained at a first-stage cold temperature that is lower than the ambient temperature. 10. The cryocooler of claim 9, wherein the first-stage thermal interface is coupled to an expansion volume of the first-stage expander. 11. The cryocooler of claim 10, further comprising an inertance tube coupling the surge volume to the first-stage thermal interface. 12. The cryocooler of claim 10, wherein the first-stage thermal interface is cantilevered off the expansion volume. 13. The cryocooler of claim 1, wherein the surge volume is within the Stirling expander. 14. The cryocooler of claim 1, wherein the surge volume is inside at least part of a plenum of the Stirling expander. 15. The cryocooler of claim 1, further comprising an ambient-stage structure; wherein the surge volume and at least the first-stage expander are mechanically coupled to the ambient-stage structure. 16. A hybrid multistage cryocooler comprising: a first-stage expander having a first-stage expander outlet; a first-stage thermal interface; a second stage in communication with the first-stage expander outlet, via the first-stage thermal interface; a surge volume in communication with a second-stage expander, via the first-stage thermal interface; and an inertance tube coupling the surge volume to the first-stage thermal interface; wherein the surge volume is maintained at an ambient temperature; wherein a first end of the inertance tube is at the ambient temperature, wherein a second end of the inertance tube is at a first-stage temperature that is lower than the ambient temperature; wherein the first-stage expander is a Stirling expander; wherein the first-stage thermal interface is coupled to an expansion volume of the first-stage expander; and wherein the first-stage thermal interface is cantilevered off the expansion volume. 17. The cryocooler of claim 16, wherein the surge volume is within the Stirling expander. 18. The cryocooler of claim 16, wherein the surge volume is in at least part of a plenum of the Stirling expander. 19. The cryocooler of claim 16, further comprising an ambient-stage structure; and wherein the surge volume and at least the first-stage expander are mechanically coupled to the ambient-stage structure. 20. A method of cooling, comprising: providing a first-stage expander having a first-stage expander outlet; providing a first-stage thermal interface; providing a second-stage cooler in communication with the first-stage expander outlet, via the first-stage thermal interface; and coupling a surge volume in communication with the first-stage expander outlet and the second-stage cooler, via the first-stage thermal interface, wherein the coupling includes placing the surge volume such that the surge volume is maintained at an ambient temperature. 21. The cryocooler of claim 1, wherein the first-stage thermal interface is at a first-stage temperature that is lower than the ambient temperature.
이 특허에 인용된 특허 (10)
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Price Kenneth D. ; Kirkconnell Carl S., Apparatus and method for achieving temperature stability in a two-stage cryocooler.
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Ohtani Yasumi,JPX ; Takahashi Masahiko,JPX ; Hatakeyama Hideo,JPX ; Chandratilleke Rohana,JPX ; Kuriyama Toru ; Nakagome Hideki,JPX ; Kobayashi Takayuki,JPX ; Hattori Tomomi,JPX ; Yoshino Tatsuya,JPX, Cooling system having a plurality of cooling stages in which refrigerant-filled chamber type refrigerators are used.
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Rattray Alan A. (Alta Loma CA) Kirkconnell Carl S. (Huntington Beach CA) Soloski Steven C. (Manhattan Beach CA) Price Kenneth D. (Long Beach CA) Russo Samuel C. (Arcadia CA), Cooling system using a pulse-tube expander.
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Dante Patrick Bonaquist ; Bayram Arman ; Nancy Jean Lynch ; Arun Acharya, Cryogenic pulse tube system.
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Acharya Arun ; Royal John Henri ; Gottzmann Christian Fredrich ; Bonaquist Dante Patrick ; Arman Bayram, Cryogenic ultra cold hybrid liquefier.
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Hiresaki Yu (Tokyo JPX) Gao Jin Lin (Tokyo JPX) Matsubara Yoichi (Funabashi JPX), Gas cycle refrigerator.
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Gao Jin Lin, Hybrid-two-stage pulse tube refrigerator.
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Swift, Gregory W.; Wollan, John J., Method and apparatus for fine tuning an orifice pulse tube refrigerator.
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Chao Wang, Pulse-tube cryorefrigeration apparatus using an integrated buffer volume.
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Price Kenneth D. ; Kirkconnell Carl S. ; Neville Stephen C., Single-fluid stirling/pulse tube hybrid expander.
이 특허를 인용한 특허 (6)
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Yates, Ryan; Conrad, Theodore J.; Bullard, Andrew L., Frequency-matched cryocooler scaling for low-cost, minimal disturbance space cooling.
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Kirkconnell, Carl S.; Barr, Michael C.; Bellis, Lowell A., High efficiency compact linear cryocooler.
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Hon, Robert C; Bellis, Lowell A; Shrago, Julian A; Kirkconnell, Carl S., Long life seal and alignment system for small cryocoolers.
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McKaughan, Stephen V.; Rombult, Philip A.; Campbell, Jr., Robert J., Optical payload with folded telescope and cryocooler.
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Xu, Mingyao; Gao, Jin Lin, Reduced input power cryogenic refrigerator.
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Hon, Robert C.; Silny, John F., Time domain vibration reduction and control.
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