GB1238470A - - Google Patents

Info

Publication number
GB1238470A
GB1238470A GB1238470DA GB1238470A GB 1238470 A GB1238470 A GB 1238470A GB 1238470D A GB1238470D A GB 1238470DA GB 1238470 A GB1238470 A GB 1238470A
Authority
GB
United Kingdom
Prior art keywords
signal
expansion nozzle
vary
load
temperature
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
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 GB1238470A publication Critical patent/GB1238470A/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
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/42—Modularity, pre-fabrication of modules, assembling and erection, horizontal layout, i.e. plot plan, and vertical arrangement of parts of the cryogenic unit, e.g. of the cold box

Abstract

1,238,470. Refrigerating. HYMATIC ENG. CO. Ltd. 19 Sept., 1969 [28 June, 1968], No. 30940/68. Heading F4H. [Also in Division G3] In a Joule Thomson cooling apparatus for cooling a load 24 by passing a pressurized supply of refrigerant gas below its inversion temperature through a heat exchanger coil 11 and an expansion nozzle 20 and thence in a path 12 around the coil to cool the incoming gas, the flow of gas through the expansion nozzle is regulated in accordance with an error signal determined in a modulating means. Thus, the apparatus provides regulation enabling a desired temperature to be maintained as required, the value of the temperature depending on the chosen reference signal which may, if desired, be made adjustable. The means includes a thermoelectric transducer formed as a thermocouple 30 adjacent the load 24 connected to a preamplifier 32 to produce an electric signal which is algebraically added to a reference signal 34 in an adding: unit 35, the output of which constitutes the error signal. This signal is supplied to an electropneumatic valve 37 arranged to connect a pressure line 40 to either a low-pressure servogas supply 38 or an exhaust 39, and thereby vary the position of bellows 23 connected by a rod 22 to a needle valve 21 to vary the effective area of the expansion nozzle.
GB1238470D 1968-06-28 1968-06-28 Expired GB1238470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3094068 1968-06-28

Publications (1)

Publication Number Publication Date
GB1238470A true GB1238470A (en) 1971-07-07

Family

ID=10315489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238470D Expired GB1238470A (en) 1968-06-28 1968-06-28

Country Status (1)

Country Link
GB (1) GB1238470A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237699A (en) * 1979-05-23 1980-12-09 Air Products And Chemicals, Inc. Variable flow cryostat with dual orifice
GB2186741A (en) * 1986-02-14 1987-08-19 Philips Electronic Associated Infrared detectors
EP0582817A1 (en) * 1992-08-13 1994-02-16 BODENSEEWERK GERÄTETECHNIK GmbH Refrigeration system for cooling down an object to low temperatures by a Joule Thomson cooler
US6082119A (en) * 1999-02-16 2000-07-04 General Pneumatics Corp. Commandably actuated cryostat
WO2015132538A1 (en) * 2014-03-06 2015-09-11 Société Française De Détecteurs Infrarouges - Sofradir Cooled detecting device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237699A (en) * 1979-05-23 1980-12-09 Air Products And Chemicals, Inc. Variable flow cryostat with dual orifice
GB2186741A (en) * 1986-02-14 1987-08-19 Philips Electronic Associated Infrared detectors
GB2186741B (en) * 1986-02-14 1989-11-08 Philips Electronic Associated Infrared detectors
EP0582817A1 (en) * 1992-08-13 1994-02-16 BODENSEEWERK GERÄTETECHNIK GmbH Refrigeration system for cooling down an object to low temperatures by a Joule Thomson cooler
EP0699881A3 (en) * 1992-08-13 1996-09-11 Bodenseewerk Geraetetech Refrigeration system for cooling down an object to low temperatures by a joule Thomson cooler
US6082119A (en) * 1999-02-16 2000-07-04 General Pneumatics Corp. Commandably actuated cryostat
WO2015132538A1 (en) * 2014-03-06 2015-09-11 Société Française De Détecteurs Infrarouges - Sofradir Cooled detecting device
FR3018352A1 (en) * 2014-03-06 2015-09-11 Soc Fr Detecteurs Infrarouges Sofradir COOLING DETECTION DEVICE
US10161800B2 (en) 2014-03-06 2018-12-25 Societe Francaise de Detecteurs Infrarouges—Sofradir Cooled detecting device

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees