GB425876A - Improvements in or relating to air cooling and conditioning apparatus - Google Patents

Improvements in or relating to air cooling and conditioning apparatus

Info

Publication number
GB425876A
GB425876A GB24937/34A GB2493734A GB425876A GB 425876 A GB425876 A GB 425876A GB 24937/34 A GB24937/34 A GB 24937/34A GB 2493734 A GB2493734 A GB 2493734A GB 425876 A GB425876 A GB 425876A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
coil
spring
air
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
GB24937/34A
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 Thermostat Co Ltd
Original Assignee
British Thermostat 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 Thermostat Co Ltd filed Critical British Thermostat Co Ltd
Priority to GB24937/34A priority Critical patent/GB425876A/en
Publication of GB425876A publication Critical patent/GB425876A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • 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
    • F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Drying Of Gases (AREA)

Abstract

425,876. Pressure-regulating valves. PAYNE, M., 50, Hook Road, Surbiton, Surrey, and BRITISH THERMOSTAT CO., Ltd., Teddington Works, Windmill Road, Sunbury, Middlesex. Aug. 29, 1934, No. 24937. [Class 135] [See also Group XIII] The temperature and the humidity o: the air in a cham ber are regulated by a refrigerant evap orator coil E the flow of refrigerant liquid to which i; controlled by an expansion valve set to maintain the pres sure in the coil at either of two selec ted values At the higher pressure nc moisture will be separated from the air while at the lower pressure a desirec portion of the mois ture will be deposited as rime on the coil. The expansion valve comprises a casing containing two valves R<1>, R<2>, the operation of each of which is controlled by an adjustable spring 2 disposed in a bellows 3 subjected internally to atmospheric pressure and externally to the pressure in the evaporator coil. The pressure of the spring 2 on the valve R<2> is greater than that of the corresponding spring on the valve R<1>. In the position shown, the flow of refrigerant liquid from the pipe a through the pipe d<2> is cut off by a valve C, controlled, e.g. by an electromagnet S<1> operated through a switch by a humidistat in the chamber, and the refrigerant flows through the pipe d<1> and past the valve R<1>, which is opened by the pressure of the corresponding bellows and spring, into the casing and thence to the evaporator coil in which it vaporizes at a relatively low pressure and temperature so that moisture from the air is deposited thereon. When the moisture content of the air has been sufficiently reduced, the valve C opens and refrigerant liquid passes through both the pipes d<1>, d<2> and past the valves R<1>, R<2> into the casing. The consequent rise of pressure in the coil and the casing contracts the bellows of the valve R<1> which therefore closes; the valve R<2> remains open since it is more heavily loaded by its spring 2 than is the valve R<1>. In this case, the pressure and temperature in the coil will be relatively high and no moisture will be deposited thereon.
GB24937/34A 1934-08-29 1934-08-29 Improvements in or relating to air cooling and conditioning apparatus Expired GB425876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB24937/34A GB425876A (en) 1934-08-29 1934-08-29 Improvements in or relating to air cooling and conditioning apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24937/34A GB425876A (en) 1934-08-29 1934-08-29 Improvements in or relating to air cooling and conditioning apparatus

Publications (1)

Publication Number Publication Date
GB425876A true GB425876A (en) 1935-03-22

Family

ID=10219633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24937/34A Expired GB425876A (en) 1934-08-29 1934-08-29 Improvements in or relating to air cooling and conditioning apparatus

Country Status (1)

Country Link
GB (1) GB425876A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193559B (en) * 1986-02-04 1990-10-10 Eidsmore Paul G Monitoring of gas-volume in a pressurized reservoir
EP2064496A2 (en) * 2006-09-18 2009-06-03 Carrier Corporation Refrigerant system wtih expansion device bypass

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193559B (en) * 1986-02-04 1990-10-10 Eidsmore Paul G Monitoring of gas-volume in a pressurized reservoir
EP2064496A2 (en) * 2006-09-18 2009-06-03 Carrier Corporation Refrigerant system wtih expansion device bypass
EP2064496A4 (en) * 2006-09-18 2012-05-30 Carrier Corp Refrigerant system wtih expansion device bypass

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