GB1126496A - Controls for refrigeration systems - Google Patents

Controls for refrigeration systems

Info

Publication number
GB1126496A
GB1126496A GB46445/66A GB4644566A GB1126496A GB 1126496 A GB1126496 A GB 1126496A GB 46445/66 A GB46445/66 A GB 46445/66A GB 4644566 A GB4644566 A GB 4644566A GB 1126496 A GB1126496 A GB 1126496A
Authority
GB
United Kingdom
Prior art keywords
valve
expansion valve
pressure
liquid
opening
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
GB46445/66A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1126496A publication Critical patent/GB1126496A/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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
    • F25B41/335—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/025—Motor control arrangements
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/16—Sensors measuring the temperature of products

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

1,126,496. Refrigerating. WESTINGHOUSE ELECTRIC CORP. 18 Oct., 1966 [19 Nov., 1965], No. 46445/66. Heading F4H. [Also in Division G3] The expansion valve 14 of a compressioncondensation system is controlled during normal operation by the pressure and temperature of liquid leaving the condenser 11. The expansion valve is operated by a piston provided with a bleed opening and moving in a chamber 26 under the influence of the pressure of liquid refrigerant admitted from the liquid line 12 at 20 in such manner that increased pressure on the piston moves the expansion valve in the opening direction. Valves 21 and 23 are operated by cold gas pressure on diaphragms in chambers 39 and 30 and under normal operation are open and closed respectively. A solenoid valve 25 is held open whenever the compressor C is energized by a thermostatic switch TS. Thus under normal conditions the expansion valve is controlled by a valve 22 operated by a diaphragm in a chamber 41 the sides of which are in communication with a temperature sensing bulb 51 and with liquid in line 12 in such manner that increased liquid pressure tends to open the valve 22 and thus to increase the opening of the expansion valve and that increased temperature in the condenser outlet tends to close the valve 22 and thus to decrease the opening of the expansion valve to cause back-up of liquid in the condenser to increase the cooling action of the latter. If the evaporator becomes starved, the valve 23 opens under the action of decreased pressure in the line 17, thereby by-passing the valve 22 and causing the expansion valve to open further. If evaporator pressure increases unduly, valve 21 moves in the closing direction, thereby decreasing the opening of the expansion valve. The expansion valve control may be incorporated in a reversible cycle system.
GB46445/66A 1965-11-19 1966-10-18 Controls for refrigeration systems Expired GB1126496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US508736A US3320763A (en) 1965-11-19 1965-11-19 Controls for refrigeration systems

Publications (1)

Publication Number Publication Date
GB1126496A true GB1126496A (en) 1968-09-05

Family

ID=24023861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46445/66A Expired GB1126496A (en) 1965-11-19 1966-10-18 Controls for refrigeration systems

Country Status (4)

Country Link
US (1) US3320763A (en)
DE (1) DE1501175C3 (en)
FR (1) FR1516006A (en)
GB (1) GB1126496A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638446A (en) * 1969-06-27 1972-02-01 Robert T Palmer Low ambient control of subcooling control valve
US3592018A (en) * 1969-08-11 1971-07-13 Gen Motors Corp Pilot operated automatic expansion valve
US3754730A (en) * 1972-05-01 1973-08-28 Refrigerating Specialties Co Pressure refrigerant regulator
BR9702803A (en) * 1997-08-28 1999-05-18 Brasil Compressores Sa Cooling system arrangement for cooling system
DE102006041156A1 (en) * 2006-09-01 2008-03-06 Volkswagen Ag Collant circuit for vehicle air conditioning system, has compressor and distribution of collant quantity used in cicuit is almost equal during operation and non-operation
WO2018078808A1 (en) * 2016-10-28 2018-05-03 三菱電機株式会社 Air conditioner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123591A (en) * 1964-03-03 Fractionation of polymerization diluent
US2571625A (en) * 1943-12-14 1951-10-16 George E Seldon Thermal and auxiliary valve combination

Also Published As

Publication number Publication date
US3320763A (en) 1967-05-23
FR1516006A (en) 1968-03-08
DE1501175A1 (en) 1969-10-23
DE1501175B2 (en) 1974-04-25
DE1501175C3 (en) 1974-11-28

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