GB1335025A - Method of and apparatus for refrigeration - Google Patents

Method of and apparatus for refrigeration

Info

Publication number
GB1335025A
GB1335025A GB1335025DA GB1335025A GB 1335025 A GB1335025 A GB 1335025A GB 1335025D A GB1335025D A GB 1335025DA GB 1335025 A GB1335025 A GB 1335025A
Authority
GB
United Kingdom
Prior art keywords
inlet
compressor
vapour
dec
casing
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
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.)
HOWDEN GODFREY Ltd
Original Assignee
HOWDEN GODFREY 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 HOWDEN GODFREY Ltd filed Critical HOWDEN GODFREY Ltd
Publication of GB1335025A publication Critical patent/GB1335025A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
    • 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
    • F25B2400/13—Economisers
    • 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
    • F25B2400/23—Separators

Abstract

1335025 Meshing screw compressor HOWDEN GODFREY Ltd 30 Dec 1970 [31 Dec 1969] 63542/69 Heading F1F [Also in Division F4J A meshing screw compressor for use in refrigeration apparatus comprises male and female rotors 1, 2 in a casing 3 having an inlet port 8 and a further inlet passage 9 extending radially of the casing. When used in the refrigeration cycle of Fig. 2 after condensing of the high pressure vapour in the heat exchanger 13 the resultant liquid vapour mixture is passed to a separator 11 before the liquid passes through the expansion valve to the evaporator 12. The separated high pressure vapour is fed by a line 10 to be introduced into the compressor through the inlet 9 at a pressure above normal inlet pressure just after rotor cut-off, i.e. after the normal inlet 8 is closed to provide supercharging of the compressor thus improving its working efficiency.
GB1335025D 1969-12-31 1969-12-31 Method of and apparatus for refrigeration Expired GB1335025A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6354269 1969-12-31

Publications (1)

Publication Number Publication Date
GB1335025A true GB1335025A (en) 1973-10-24

Family

ID=10489117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1335025D Expired GB1335025A (en) 1969-12-31 1969-12-31 Method of and apparatus for refrigeration

Country Status (1)

Country Link
GB (1) GB1335025A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459385A1 (en) * 1979-06-19 1981-01-09 Zimmern Bernard PROCESS FOR SUPERIMENTING AND ADJUSTING A SINGLE SCREW COMPRESSOR
WO2007065487A1 (en) * 2005-12-08 2007-06-14 Ghh Rand Schraubenkompressoren Gmbh Helical screw compressor
US7618248B2 (en) * 2006-05-10 2009-11-17 Grasso Gmbh Refrigeration Technology Screw compressor with intermediate plate
US7753665B2 (en) * 2006-08-01 2010-07-13 Grasso Gmbh Refrigeration Technology Screw compressor for working pressures above 80 bar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459385A1 (en) * 1979-06-19 1981-01-09 Zimmern Bernard PROCESS FOR SUPERIMENTING AND ADJUSTING A SINGLE SCREW COMPRESSOR
WO2007065487A1 (en) * 2005-12-08 2007-06-14 Ghh Rand Schraubenkompressoren Gmbh Helical screw compressor
US7713039B2 (en) 2005-12-08 2010-05-11 Gmbh Rand Schraubenkowpressoren Gmbh Helical screw compressor having a vented sealing arrangement
US9091268B2 (en) 2005-12-08 2015-07-28 Ghh Rand Schraubenkompressoren Gmbh Three-stage screw compressor
US7618248B2 (en) * 2006-05-10 2009-11-17 Grasso Gmbh Refrigeration Technology Screw compressor with intermediate plate
GB2438034B (en) * 2006-05-10 2011-04-06 Grasso Gmbh Refrigeration Technology Screw compressor with rotor spacer for high input power
US7753665B2 (en) * 2006-08-01 2010-07-13 Grasso Gmbh Refrigeration Technology Screw compressor for working pressures above 80 bar

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Legal Events

Date Code Title Description
PS Patent sealed
433D Application made for revocation (sect. 33/1949)
PLE Entries relating assignments, transmissions, licences in the register of patents
433G Case decided by the comptroller ** application refused (sect. 33/1949)
PCNP Patent ceased through non-payment of renewal fee