GB654278A - Improvements in and relating to snap action valves - Google Patents

Improvements in and relating to snap action valves

Info

Publication number
GB654278A
GB654278A GB18317/48A GB1831748A GB654278A GB 654278 A GB654278 A GB 654278A GB 18317/48 A GB18317/48 A GB 18317/48A GB 1831748 A GB1831748 A GB 1831748A GB 654278 A GB654278 A GB 654278A
Authority
GB
United Kingdom
Prior art keywords
bellows
valve
strip
valve member
secondary circuit
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
GB18317/48A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB654278A publication Critical patent/GB654278A/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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/56—Mechanical actuating means without stable intermediate position, e.g. with snap action
    • F16K31/566—Mechanical actuating means without stable intermediate position, e.g. with snap action using a bistable spring device arranged symmetrically around the actuating stem
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

654,278. Refrigerating systems. BRITISH THOMSON-HOUSTON CO., Ltd. July 7, 1948, No. 18317. Convention date, July 8, 1947. [Class 29] [Also in Group XXIX] In a refrigerator having a freezing compartment cooled by a primary circuit and a cooling compartment cooled by a secondary circuit whose condenser is arranged in heat transfer relationship with the primary evaporator, operation of the secondary circuit on a defrosting cycle is effected by a snap acting valve disposed between the evaporator and the condenser of the secondary circuit and responsive to the refrigerant pressure in that circuit. The valve comprises a bellows 23 whose upper free end is connected by a member 27, 28 having arms 29, 30, and a bowed spring strip 31, to a valve member 19 controlling the outlet 10. A stop 37 for the valve member when in its open position causes, upon contraction of the bellows, deformation of the strip 31 beyond a dead-centre position whereupon the strip operates to close the valve. A stop 36 limits the upward movement of the valve member to permit subsequent opening thereof. The bellows is loaded externally by gas in a chamber 24. In a modification, the spring strip is connected directly to the bellows and the member 28 to the valve member, the member 28, in this case, moving between stops.
GB18317/48A 1947-07-08 1948-07-07 Improvements in and relating to snap action valves Expired GB654278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US654278XA 1947-07-08 1947-07-08

Publications (1)

Publication Number Publication Date
GB654278A true GB654278A (en) 1951-06-13

Family

ID=22062647

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18317/48A Expired GB654278A (en) 1947-07-08 1948-07-07 Improvements in and relating to snap action valves

Country Status (1)

Country Link
GB (1) GB654278A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186980A1 (en) * 1984-12-05 1986-07-09 Ford Motor Company Limited Pressure operated valve
EP0555051A1 (en) * 1992-02-03 1993-08-11 General Electric Company Pressure controlled switching valve for refrigeration system
EP0556972A1 (en) * 1992-02-10 1993-08-25 General Electric Company Pressure controlled switching valve for refrigeration system
EP1134467A1 (en) * 2000-03-16 2001-09-19 Otto Egelhof GmbH & Co. Valve installation in a refrigeration system
EP1327837A2 (en) * 2002-01-09 2003-07-16 Electrolux Home Products Corporation N.V. Automatic cooling agent valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186980A1 (en) * 1984-12-05 1986-07-09 Ford Motor Company Limited Pressure operated valve
EP0555051A1 (en) * 1992-02-03 1993-08-11 General Electric Company Pressure controlled switching valve for refrigeration system
EP0556972A1 (en) * 1992-02-10 1993-08-25 General Electric Company Pressure controlled switching valve for refrigeration system
EP1134467A1 (en) * 2000-03-16 2001-09-19 Otto Egelhof GmbH & Co. Valve installation in a refrigeration system
EP1327837A2 (en) * 2002-01-09 2003-07-16 Electrolux Home Products Corporation N.V. Automatic cooling agent valve
EP1327837A3 (en) * 2002-01-09 2005-09-07 Electrolux Home Products Corporation N.V. Automatic cooling agent valve

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