GB1526747A - Heating/cooling plants - Google Patents

Heating/cooling plants

Info

Publication number
GB1526747A
GB1526747A GB4984375A GB4984375A GB1526747A GB 1526747 A GB1526747 A GB 1526747A GB 4984375 A GB4984375 A GB 4984375A GB 4984375 A GB4984375 A GB 4984375A GB 1526747 A GB1526747 A GB 1526747A
Authority
GB
United Kingdom
Prior art keywords
valve
compressor
pressure
condenser
capacity
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
GB4984375A
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.)
Stal Refrigeration AB
Original Assignee
Stal Refrigeration AB
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
Priority claimed from SE7415654A external-priority patent/SE396807B/en
Priority claimed from SE7511314A external-priority patent/SE401557B/en
Application filed by Stal Refrigeration AB filed Critical Stal Refrigeration AB
Publication of GB1526747A publication Critical patent/GB1526747A/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
    • 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
    • F25B49/022—Compressor 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

1526747 Fluid-pressure servomotor systems STAL REFRIGERATION AB 4 Dec 1975 [13 Dec 1974 9 Oct 1975] 49843/75 Heading G3P [Also in Division F4] In a plant comprising a closed circuit for a refrigerant including a compressor 1 of variable capacity, a condenser 2, an expansion valve 3 and an evaporator 4, control means adjust the capacity of the compressor in response to pressure changes in the supply to the condenser. The compressor contains a chamber (31) Fig. 2 (not shown) isolated from two cylinder chambers (29, 30) by a valve (35) normally held closed by the pressure from a lubricating oil pump 9. When the pressure in a line 5 increases, a diaphragm 20 is depressed to move a valve 12 towards its closed position and reduce the pressure applied to the valve (35) which is opened by a spring (36) to reduce the capacity of the compressor. A second valve 13 controlled by a temperature sensor 23 in the evaporator 4 may also be provided to control the compressor. In a second embodiment, the condenser of a heat pump plant supplies the radiators (47) Fig. 4 (not shown) of a building heating system and the valve (13a) is electrically controlled by a unit (61) receiving temperature signals from the water in the heating system and from the outside air. A three-way valve (60) also controlled by the unit (61) permits a boiler (48) to supply the radiators when the outside temperature is below freezing.
GB4984375A 1974-12-13 1975-12-04 Heating/cooling plants Expired GB1526747A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7415654A SE396807B (en) 1974-12-13 1974-12-13 COOLING SYSTEM WITH OVERPRESSURE CONTROL
SE7511314A SE401557B (en) 1975-10-09 1975-10-09 SYSTEM FOR COOLING OR HEATING PURPOSES

Publications (1)

Publication Number Publication Date
GB1526747A true GB1526747A (en) 1978-09-27

Family

ID=26656565

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4984375A Expired GB1526747A (en) 1974-12-13 1975-12-04 Heating/cooling plants

Country Status (4)

Country Link
DE (1) DE2553831A1 (en)
FR (1) FR2294409A1 (en)
GB (1) GB1526747A (en)
NL (1) NL7514512A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120173A (en) * 1977-06-02 1978-10-17 Borg-Warner Corporation Head pressure control system for refrigeration apparatus
FR2486207B1 (en) * 1980-07-07 1987-09-25 Dunham Bush Inc HEAT PUMP SYSTEM
US5177972A (en) * 1983-12-27 1993-01-12 Liebert Corporation Energy efficient air conditioning system utilizing a variable speed compressor and integrally-related expansion valves
CN105135737B (en) * 2015-07-23 2017-05-31 广东美的暖通设备有限公司 Combined air-conditioning system

Also Published As

Publication number Publication date
NL7514512A (en) 1976-06-15
DE2553831A1 (en) 1976-06-16
FR2294409A1 (en) 1976-07-09
FR2294409B1 (en) 1979-06-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee