GB1387891A - Screw compressor - Google Patents

Screw compressor

Info

Publication number
GB1387891A
GB1387891A GB3625072A GB3625072A GB1387891A GB 1387891 A GB1387891 A GB 1387891A GB 3625072 A GB3625072 A GB 3625072A GB 3625072 A GB3625072 A GB 3625072A GB 1387891 A GB1387891 A GB 1387891A
Authority
GB
United Kingdom
Prior art keywords
passages
valve
housing
face
bore
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
GB3625072A
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.)
Gardner Denver Inc
Original Assignee
Gardner Denver Inc
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 Gardner Denver Inc filed Critical Gardner Denver Inc
Publication of GB1387891A publication Critical patent/GB1387891A/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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
    • F04C28/12—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
    • F04C28/125—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves with sliding valves controlled by the use of fluid other than the working fluid

Abstract

1387891 Rotary positive displacement pumps GARDNER-DENVER CO 3 Aug 1972 [5 Nov 1971] 36250/72 Heading FIF A helical screw compressor 10 comprises male and female rotors 12, 14 located in parallel intersecting bores 18, 20, a bearing housing 34 for the rotors providing a low-pressure face 37 with an inlet port 36 and an intermediate housing 30 providing a high-pressure face 32 with an outlet 52, and a capacity control valve including a valve-member 66 axially movable in a bore 64. The valve-member 66 forms a movable wall portion of the working chamber of the compressor and includes a piston 78 integral therewith which has a face 90 which is acted upon by the highpressure of discharged gas in a chamber 54 to open the control valve by forming a vent between the mating surfaces 68, 70 of the housing 16 and valve-member 66. Thus if the hydraulic pressure from the lubrication system to a chamber 81 behind piston 78 fails the valve will be opened by pressure on face 90 so as to minimize the load on the compressor. A guide pin 106 located in mating grooves 108, 110 in the valve-member 66 and housing 16 serves to align the crest 102 of member 66 with the crest 104 of the housing 16 defined by the intersection of bores 18, 20. Lubricating oil is supplied from a manifold 116 to the working chamber via pipe 118, passages 120, 122 in the housing portion 62 defining bore 64, passages 126, 128, 130 in guide pin 106, Fig. 2 and circumferential grooves 112 or (114) in bore 64. Land 136 closes passages (114) in the embodiment shown, liquid thus flowing via passages 112 into the working chamber. Alternatively, a different pin could be inserted and passages 112 closed while passages (114) serve to transmit lubricating fluid Figs. 4 and 5 (not shown).
GB3625072A 1971-11-05 1972-08-03 Screw compressor Expired GB1387891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19605671A 1971-11-05 1971-11-05

Publications (1)

Publication Number Publication Date
GB1387891A true GB1387891A (en) 1975-03-19

Family

ID=22723965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3625072A Expired GB1387891A (en) 1971-11-05 1972-08-03 Screw compressor

Country Status (7)

Country Link
US (1) US3738780A (en)
JP (1) JPS4854504A (en)
AU (1) AU462434B2 (en)
BE (1) BE788564A (en)
CA (1) CA946342A (en)
GB (1) GB1387891A (en)
ZA (1) ZA724566B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE366375B (en) * 1972-06-30 1974-04-22 Stal Refrigeration Ab
US3809510A (en) * 1973-03-22 1974-05-07 Philco Ford Corp Combination pressure relief and anti-slugging valve for a screw compressor
GB1517156A (en) * 1974-06-21 1978-07-12 Svenska Rotor Maskiner Ab Screw compressor including means for varying the capacity thereof
GB1518271A (en) * 1974-07-01 1978-07-19 Svenska Rotor Maskiner Ab Method for the compression ratio of a screw compressor and prime mover
USRE29283E (en) * 1974-07-26 1977-06-28 Dunham-Bush, Inc. Undercompression and overcompression free helical screw rotary compressor
US3936239A (en) * 1974-07-26 1976-02-03 Dunham-Bush, Inc. Undercompression and overcompression free helical screw rotary compressor
US3924972A (en) * 1974-10-29 1975-12-09 Vilter Manufacturing Corp Control means for a variable capacity rotary screw compressor
US4076461A (en) * 1974-12-09 1978-02-28 Dunham-Bush, Inc. Feedback control system for helical screw rotary compressors
US4003199A (en) * 1976-03-01 1977-01-18 General Motors Corporation Turbine engine with air brake
USRE31379E (en) * 1979-06-01 1983-09-13 Dunham-Bush, Inc. Combined pressure matching and capacity control slide valve assembly for helical screw rotary machine
US4222716A (en) * 1979-06-01 1980-09-16 Dunham-Bush, Inc. Combined pressure matching and capacity control slide valve assembly for helical screw rotary machine
US4281975A (en) * 1979-10-09 1981-08-04 Blackwell Thomas D Anti-friction slide valve support for screw compressor
US4515540A (en) * 1983-11-22 1985-05-07 Frick Company Variable liquid refrigerant injection port locator for screw compressor equipped with automatic variable volume ratio
US4553911A (en) * 1983-11-22 1985-11-19 Frick Company Method of coding the oil in screw compressors equipped with automatic variable volume ratio
US4536130A (en) * 1984-06-18 1985-08-20 Dunham-Bush, Inc. Simplified unloader indicator for helical screw rotary compressor
US20070251256A1 (en) * 2006-03-20 2007-11-01 Pham Hung M Flash tank design and control for heat pumps
US7647790B2 (en) 2006-10-02 2010-01-19 Emerson Climate Technologies, Inc. Injection system and method for refrigeration system compressor
US8181478B2 (en) * 2006-10-02 2012-05-22 Emerson Climate Technologies, Inc. Refrigeration system
US8769982B2 (en) * 2006-10-02 2014-07-08 Emerson Climate Technologies, Inc. Injection system and method for refrigeration system compressor
US8539785B2 (en) 2009-02-18 2013-09-24 Emerson Climate Technologies, Inc. Condensing unit having fluid injection
US10012247B2 (en) * 2016-12-02 2018-07-03 Harris Corporation Variable booster for hybrid pneumatic regenerative system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO117317B (en) * 1964-03-20 1969-07-28 Svenska Rotor Maskiner Ab
GB1171291A (en) * 1965-10-12 1969-11-19 Svenska Rotor Maskiner Ab Screw Rotor Machines

Also Published As

Publication number Publication date
CA946342A (en) 1974-04-30
US3738780A (en) 1973-06-12
ZA724566B (en) 1974-02-27
AU4416372A (en) 1974-01-10
JPS4854504A (en) 1973-07-31
AU462434B2 (en) 1975-06-26
BE788564A (en) 1973-01-02

Similar Documents

Publication Publication Date Title
GB1387891A (en) Screw compressor
GB1465250A (en) Positive displacement rotary screw machines
GB1108569A (en) Meshing screw compressor
US4878815A (en) High pressure reciprocating pump apparatus
GB1212015A (en) Improvements in and relating to meshing screw-rotor compressors
US2758548A (en) Rotary fluid displacement device and mechanism therefor
GB2076896A (en) Capacity control of meshing screw compressors
US3932073A (en) Screw rotor machine with spring and fluid biased balancing pistons
GB1160161A (en) Rotary Sliding Vane Compressor
GB992095A (en) Variable displacement pump
US2790391A (en) Two stage variable delivery vane-type pump
GB1349317A (en) Screw compressor
JPS643295A (en) Vane type compressor
US2786424A (en) Fluid pump
GB1170090A (en) An improved piston pump.
US3137235A (en) Vane-type variable delivery pump
US2362420A (en) Vane pump
GB1582494A (en) Rotary fluid machine
GB1312432A (en) Hydraulic rotary positive displacement pump
US2708412A (en) Booster for increasing delivered hydraulic pressure
US3068805A (en) Pressure balancing means for rotary end valving surfaces
CN210178435U (en) Device of two-stage variable engine oil pump controlled by combination valve
US3554678A (en) High speed hydraulic pump
JPS5543094B2 (en)
US3068798A (en) Metering pumps

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee