GB1501474A – Rotary compressors
– Google Patents
GB1501474A – Rotary compressors
– Google Patents
Rotary compressors
Info
Publication number
GB1501474A
GB1501474A
GB2992775A
GB2992775A
GB1501474A
GB 1501474 A
GB1501474 A
GB 1501474A
GB 2992775 A
GB2992775 A
GB 2992775A
GB 2992775 A
GB2992775 A
GB 2992775A
GB 1501474 A
GB1501474 A
GB 1501474A
Authority
GB
United Kingdom
Prior art keywords
valve
regulate
gas
open
pressure
Prior art date
1975-07-16
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
GB2992775A
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.)
UNISCREW Ltd
Original Assignee
UNISCREW 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.)
1975-07-16
Filing date
1975-07-16
Publication date
1978-02-15
1975-07-16
Application filed by UNISCREW Ltd
filed
Critical
UNISCREW Ltd
1975-07-16
Priority to GB2992775A
priority
Critical
patent/GB1501474A/en
1978-02-15
Publication of GB1501474A
publication
Critical
patent/GB1501474A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F04C28/16—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 lift valves
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
F04C28/02—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for several pumps connected in series or in parallel
Abstract
1501474 Rotary positive-displacement fluidmachines UNISCREW Ltd 16 July 1975 29927/75 Heading F1F In a double-acting compressor, which may be of the sliding-vane type as shown in Fig. 1, a valve 12 when open allows gas in a discharge pipe 8a to pass into one of the working chambers 104a, 104b which is for the time being isolated from both suction ports 5b and a discharge port 7b, this arrangement being said to reduce the power consumption. While the valve 12 is open a check-valve 10 is closed owing to loss of pressure in the pipe 8a. Preferably, the valve 12 opens when the delivery flow-rate is at or near the maximum. A valve 16 may be provided to regulate the inflow of gas in accordance with the pressure in a delivery duct 9. To obtain greater economy, a spring- loaded valve may be disposed in the casing wall portion 4a and arranged to open with the valve 12, so as to reduce the compression ratio in the respective working chamber, Fig. 7 (not shown). The valve 16 may be dispensed with and circumferentially-movable plates, or “shells”, 48a, 48b, Fig. 9, be provided to regulate the gas flow at the suction ports according to the discharge pressure. Arrangements generally similar to those shown in Fig. 1 may be comprised in a compressor of the worm and worm-wheel type, Figs. 17-19 (not shown); and, instead of the valve 16, axiallymovable elements (222), Figs. 20-22 (not shown), may be employed to regulate the gas inflow.
GB2992775A
1975-07-16
1975-07-16
Rotary compressors
Expired
GB1501474A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB2992775A
GB1501474A
(en)
1975-07-16
1975-07-16
Rotary compressors
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB2992775A
GB1501474A
(en)
1975-07-16
1975-07-16
Rotary compressors
Publications (1)
Publication Number
Publication Date
GB1501474A
true
GB1501474A
(en)
1978-02-15
Family
ID=10299460
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2992775A
Expired
GB1501474A
(en)
1975-07-16
1975-07-16
Rotary compressors
Country Status (1)
Country
Link
GB
(1)
GB1501474A
(en)
Cited By (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0101745A1
(en)
*
1982-03-04
1984-03-07
Matsushita Electric Industrial Co., Ltd.
Rotary compressor
EP0118039A1
(en)
*
1983-02-04
1984-09-12
Hitachi, Ltd.
Positive displacement machine with discharge volume-control
EP0184329A1
(en)
*
1984-11-19
1986-06-11
The Hydrovane Compressor Company Limited
Positive displacement air compressors
EP0381790A1
(en)
*
1988-02-02
1990-08-16
AERZENER MASCHINENFABRIK GmbH
Method and device for the compression of a gaseous medium
WO1997016647A1
(en)
*
1995-11-02
1997-05-09
Aaf-Mcquay Incorporated
Improved compressor arrangement and method of working the same
WO1997016649A1
(en)
*
1995-11-02
1997-05-09
Aaf-Mcquay Incorporated
Scroll compressors
WO1997016648A1
(en)
*
1995-11-02
1997-05-09
Aaf-Mcquay Incorporated
Improvements in and relating to single screw compressors
US6113358A
(en)
*
1995-11-02
2000-09-05
Aaf – Mcquay Inc.
Scroll compressors
1975
1975-07-16
GB
GB2992775A
patent/GB1501474A/en
not_active
Expired
Cited By (10)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0101745A1
(en)
*
1982-03-04
1984-03-07
Matsushita Electric Industrial Co., Ltd.
Rotary compressor
EP0101745A4
(en)
*
1982-03-04
1984-07-18
Matsushita Electric Ind Co Ltd
Rotary compressor.
EP0118039A1
(en)
*
1983-02-04
1984-09-12
Hitachi, Ltd.
Positive displacement machine with discharge volume-control
US4723895A
(en)
*
1983-02-04
1988-02-09
Hitachi, Ltd.
Method of and apparatus for effecting volume control of compressor
EP0184329A1
(en)
*
1984-11-19
1986-06-11
The Hydrovane Compressor Company Limited
Positive displacement air compressors
EP0381790A1
(en)
*
1988-02-02
1990-08-16
AERZENER MASCHINENFABRIK GmbH
Method and device for the compression of a gaseous medium
WO1997016647A1
(en)
*
1995-11-02
1997-05-09
Aaf-Mcquay Incorporated
Improved compressor arrangement and method of working the same
WO1997016649A1
(en)
*
1995-11-02
1997-05-09
Aaf-Mcquay Incorporated
Scroll compressors
WO1997016648A1
(en)
*
1995-11-02
1997-05-09
Aaf-Mcquay Incorporated
Improvements in and relating to single screw compressors
US6113358A
(en)
*
1995-11-02
2000-09-05
Aaf – Mcquay Inc.
Scroll compressors
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Legal Events
Date
Code
Title
Description
1978-06-28
PS
Patent sealed
1980-03-05
PCNP
Patent ceased through non-payment of renewal fee
