GB1238911A - - Google Patents

Info

Publication number
GB1238911A
GB1238911A GB3747768A GB1238911DA GB1238911A GB 1238911 A GB1238911 A GB 1238911A GB 3747768 A GB3747768 A GB 3747768A GB 1238911D A GB1238911D A GB 1238911DA GB 1238911 A GB1238911 A GB 1238911A
Authority
GB
United Kingdom
Prior art keywords
nozzle
refrigerant
nitrogen
gaseous
stage
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.)
Expired
Application number
GB3747768A
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 filed Critical
Publication of GB1238911A publication Critical patent/GB1238911A/en
Expired legal-status Critical Current

Links

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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/02—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/02—Gas cycle refrigeration machines using the Joule-Thompson effect
    • F25B2309/022—Gas cycle refrigeration machines using the Joule-Thompson effect characterised by the expansion element
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/02—Gas cycle refrigeration machines using the Joule-Thompson effect
    • F25B2309/023—Gas cycle refrigeration machines using the Joule-Thompson effect with two stage expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

1,238,911. Cryogenic apparatus. HYMATIC ENG. CO. Ltd. 6 Aug., 1969 [6 Aug., 1968], No. 37477/68. Heading F4H. In a two-stage cooling apparatus comprising a second stage in which a gaseous refrigerant is passed through a nozzle to utilize the Joule- Thomson effect, the gaseous refrigerant is passed to the nozzle through a heat exchanger, the cooled gases from the nozzle passing through the other path of the heat-exchanger, and the second stage refrigerant is precooled by the evaporation of a liquid refrigerant under pressure delivered through a metering nozzle, the effective area of each nozzle is controlled in accordance with cooling demand. Gaseous nitrogen is supplied at 18 to a finned tube 12, and expands through a nozzle 22, cooled nitrogen flowing between inner and outer casings 11, 13 to cool the tube 12. The lower part of the outer casing forms a reservoir for liquid nitrogen, and a sensor 30 having a stem 31 projects downwardly towards the liquid nitrogen and communicates with the interior of the inner casing 11 so that alteration of pressure in the bulb 30 operates a bellows arrangement 24, 25 connected to a needle 23 controlling the expansion nozzle 22. A liquid refrigerant is supplied through a metering nozzle 54 to a cup 75, where its evaporation precools the gaseous nitrogen as it passes through an unfinned close coiled portion 77 of the supply tube 12. A bellows arrangement 62, 63 responsive to the pressure in a sensor device 67, 69 adjusts a needle valve 53 to regulate the flow of liquid refrigerant from the nozzle 54.
GB3747768A 1968-08-06 1968-08-06 Expired GB1238911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3747768 1968-08-06

Publications (1)

Publication Number Publication Date
GB1238911A true GB1238911A (en) 1971-07-14

Family

ID=10396772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3747768A Expired GB1238911A (en) 1968-08-06 1968-08-06

Country Status (2)

Country Link
US (1) US3590597A (en)
GB (1) GB1238911A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197981A (en) * 1986-11-14 1988-06-02 Marconi Co Ltd Cold stage for a microscope
GB2199399A (en) * 1986-12-13 1988-07-06 Bodenseewerk Geraetetech Cryostatic device for cooling an infrared detector
EP0447861A2 (en) * 1990-03-22 1991-09-25 Hughes Aircraft Company Two-stage Joule-Thomson cryostat with gas supply management system, and uses thereof
FR2665753A1 (en) * 1990-08-07 1992-02-14 Hymatic Eng Co Ltd Cryogenic cooling apparatus using the Joule-Thompson effect
US5150579A (en) * 1989-12-14 1992-09-29 Bodenseewerk Geratetechnik Gmbh Two stage cooler for cooling an object
DE4135764C1 (en) * 1991-10-30 1993-02-25 Bodenseewerk Geraetetechnik Gmbh, 7770 Ueberlingen, De

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1330837A (en) * 1969-12-08 1973-09-19 Hymatic Eng Co Ltd Cooling apparatus
FR2082897A5 (en) * 1970-03-31 1971-12-10 Alsthom
US3728868A (en) * 1971-12-06 1973-04-24 Air Prod & Chem Cryogenic refrigeration system
FR2176544B1 (en) * 1972-03-23 1982-02-19 Air Liquide
US3782129A (en) * 1972-10-24 1974-01-01 Gen Dynamics Corp Proportionate flow cryostat
US3818720A (en) * 1973-09-06 1974-06-25 Hymatic Eng Co Ltd Cryogenic cooling apparatus
US4080802A (en) * 1976-07-14 1978-03-28 International Telephone And Telegraph Corporation Hybrid gas cryogenic cooler
US4343268A (en) * 1979-06-07 1982-08-10 Cummins Engine Company, Inc. Energy conserving exhaust passage for an internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1465656A (en) * 1965-12-02 1967-01-13 Electronique & Physique Gas expansion cooler

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197981A (en) * 1986-11-14 1988-06-02 Marconi Co Ltd Cold stage for a microscope
GB2199399A (en) * 1986-12-13 1988-07-06 Bodenseewerk Geraetetech Cryostatic device for cooling an infrared detector
US4819451A (en) * 1986-12-13 1989-04-11 Hingst Uwe G Cryostatic device for cooling a detector
GB2199399B (en) * 1986-12-13 1990-12-05 Bodenseewerk Geraetetech Cryostatic device for cooling an infrared detector
US5150579A (en) * 1989-12-14 1992-09-29 Bodenseewerk Geratetechnik Gmbh Two stage cooler for cooling an object
EP0447861A2 (en) * 1990-03-22 1991-09-25 Hughes Aircraft Company Two-stage Joule-Thomson cryostat with gas supply management system, and uses thereof
EP0447861A3 (en) * 1990-03-22 1992-03-25 Hughes Aircraft Company Two-stage joule-thomson cryostat with gas supply management system, and uses thereof
EP0561431A2 (en) 1990-03-22 1993-09-22 Hughes Aircraft Company Two-stage joule-thomson cryostat with gas supply management system, and uses thereof
EP0561431A3 (en) * 1990-03-22 1994-01-12 Hughes Aircraft Co
FR2665753A1 (en) * 1990-08-07 1992-02-14 Hymatic Eng Co Ltd Cryogenic cooling apparatus using the Joule-Thompson effect
DE4135764C1 (en) * 1991-10-30 1993-02-25 Bodenseewerk Geraetetechnik Gmbh, 7770 Ueberlingen, De
US5299425A (en) * 1991-10-30 1994-04-05 Bodenseewerk Geratetechnik Gmbh Cooling apparatus

Also Published As

Publication number Publication date
US3590597A (en) 1971-07-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee