[특허]Cryostat refrigeration system using mixed refrigerants in a closed vapor compression cycle having a fixed flow restricto

Cryostat refrigeration system using mixed refrigerants in a closed vapor compression cycle having a fixed flow restricto 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-041/06
출원번호	US-0496468 (1995-06-29)
발명자 / 주소	Longsworth Ralph C. (Allentown PA) Boiarsky Mikhail J. (Moscow RUX) Khatri Ajay (Bethlehem PA)
출원인 / 주소	Apd Cryogenics, Inc. (Allentown PA 02)
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

A closed cycle cryogenic refrigerating system with a fixed restrictor operates with a compressor inlet pressure in a range of 0.1 Mpa to 0.4 Mpa and compressor discharge pressure in a range of 1.5 Mpa and 2.5 Mpa. A basic cryogenic refrigerant mixture is used to which is added approximately 3% to 25% of helium, hydrogen and/or neon. A ratio of refrigerant density at the inlet of the fixed restrictor between steady-state operation and operation at the beginning of cool-down is in an approximate range of 7 to 17. Relatively rapid cool-down is achieved and evaporator temperature is maintained in an approximate range of 70K to 120K.

대표청구항 ▼

A closed cycle refrigerating system for steady-state cooling at a low cryogenic temperature and for cool-down from an elevated initial temperature toward said low cryogenic steady state temperature, comprising: an evaporator for circulating a low pressure, low temperature cryogenic refrigerant therein, said evaporator absorbing heat from a load whereby said refrigerant is heated and said load is cooled; a refrigerant compressor having a low pressure inlet in a range of 0.1 to 0.4 Mpa (1 to 4 atm) and a high pressure discharge in a range of 1.5 Mpa to 2.5 Mpa (15 to 25 Atm), said compressor receiving said heated low pressure refrigerant from said evaporator at said inlet and compressing said refrigerant to a high pressure at said discharge; an after-cooler for receiving a flow of said compressed refrigerant from said compressor, removing heat from said high pressure refrigerant, and rejecting said heat from said refrigerating system; a fixed restrictor having an outlet connected to an inlet of said evaporator, said fixed restrictor throttling said refrigerant flow from said high pressure to said low pressure, said refrigerant expanding through said restrictor and thereby becoming colder, said restrictor being fixed dimensionally and operative both for cool-down and for steady-state cooling; a regenerative heat exchanger having a high pressure side and a low pressure side, said high pressure side and said low pressure side being in heat exchange relationship, said high pressure side connecting between an outlet of said after-cooler and an inlet to said fixed restrictor, said low pressure side connecting between an outlet of said evaporator and said low pressure inlet to said compressor; said refrigerant being a mixture of refrigerant components having a density ratio in an approximate range of 7 to 17 during steady-state operation while maintaining an evaporator temperature in an approximate range of 70K to 120K, said ratio being between a density at the inlet to said fixed restrictor and a density at the high pressure inlet to said regenerative heat exchanger.

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Arman Bayram ; Bonaquist Dante Patrick ; Weber Joseph Alfred ; Vincett Mark Edward, Cryogenic air separation process for producing elevated pressure gaseous oxygen.
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Honkonen Scott C. ; Hill Theodore B. ; Hill Charles C. ; Walker Graham,CAX, Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator.
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Flynn,Kevin P.; Boiarski,Mikhail; Podtcherniaev,Oleg, Methods of freezeout prevention and temperature control for very low temperature mixed refrigerant systems.
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Yaron, Ran, Miniature refrigeration system for cryothermal ablation catheter.
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Sprayberry, Kelly Gene; Williams, Joel John; Couch, Charles Thomas; Metzger, Edward H., Multi-zone variable refrigerant flow heating/cooling unit.
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Sprayberry, Kelly Gene; Williams, Joel John; Couch, Charles Thomas; Metzger, Edward H., Multi-zone variable refrigerant flow heating/cooling unit.
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Arman, Bayram; Prosser, Neil Mark; Rashad, M. Abdul-Aziz; Howard, Henry Edward, Multicomponent refrigerant fluids for low and cryogenic temperatures.
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Olszewski Walter Joseph ; Arman Bayram ; Weber Joseph Alfred ; Acharya Arun, Single circuit cryogenic liquefaction of industrial gas.
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Arun Acharya ; John H. Royal ; Dante P. Bonaquist ; Bayram Arman ; Christian F. Gottzmann, System for providing cryogenic refrigeration using an upstream pulse tube refrigerator.
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Acharya Arun ; Arman Bayram ; Olszewski Walter Joseph ; Bonaquist Dante Patrick ; Weber Joseph Alfred, Variable load refrigeration system particularly for cryogenic temperatures.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Cryostat refrigeration system using mixed refrigerants in a closed vapor compression cycle having a fixed flow restricto 원문보기

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Cryostat refrigeration system using mixed refrigerants in a closed vapor compression cycle having a fixed flow restricto 원문보기

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