GB384355A - Improvements in and relating to rotary machines for the compression and propulsion of - Google Patents

Improvements in and relating to rotary machines for the compression and propulsion of

Info

Publication number
GB384355A
GB384355A GB2217331A GB2217331A GB384355A GB 384355 A GB384355 A GB 384355A GB 2217331 A GB2217331 A GB 2217331A GB 2217331 A GB2217331 A GB 2217331A GB 384355 A GB384355 A GB 384355A
Authority
GB
United Kingdom
Prior art keywords
screws
valves
peripheries
spaces
ports
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
GB2217331A
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.)
FREDERICK CHARLES GREENFIELD
Original Assignee
FREDERICK CHARLES GREENFIELD
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 FREDERICK CHARLES GREENFIELD filed Critical FREDERICK CHARLES GREENFIELD
Priority to GB2217331A priority Critical patent/GB384355A/en
Publication of GB384355A publication Critical patent/GB384355A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/10Control 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
    • F04C28/12Control 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
    • F04C28/125Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2250/00Geometry
    • F04C2250/20Geometry of the rotor
    • F04C2250/201Geometry of the rotor conical shape

Abstract

384,355. Screw pumps. GREENFIELD, F. C., Merevale, Sutton-at-Hone, near Dartford, Kent. Aug. 5, 1931, No. 22173. [Class 110 (ii).] In a rotary pump having all the features described in Specification 342,791, comprising a number of intermeshing screws of which the helicoidal faces of the threads do not touch but are fitted with spiral springs at their peripheries, the screws, while they preferably have parallel axes, are conical, the spaces formed by the threads progressively diminishing throughout the length. The screws are provided with bearings and thrust washers and can be adjusted longitudinally as in the prior Specification. A cover 4 for the casing 1 houses bearings for the shafts, and the gear wheels, and is formed with inlets 2. A cover 14 is formed with outlets 3. The screws have their peripheries tapering longitudinally in one direction, and their cores in the opposite direction, as shown in Fig. 3. The helicoidal surfaces may be other than flat, e.g. slightly concave, to increase the thread clearances. A valve chest 20, formed in the casing 1, provides seats 21 for spring-pressed valves 23, 24 and communicates at all times with the interthread spaces by ports 25, 26. The production of an undesired high pressure in the pump is thereby prevented. The valves may be in sections 27-29 and have guide pins 30 working in guides 31, 32. A port 33 connects the valve chest with the discharge passages 3, or a pipe connection to any desired point may be employed. A screwed spindle 34 passes through a stuffing box and engages a thread in the valve guides 31, 32 so that its rotation, by hand or by any self-acting device, causes longitudinal movement of the valves to expose any desired amount of the ports 25, 26 and regulate the discharge pressure. A number of screws may be arranged around an opposite-handed central screw, and two or more such sets arranged in one or in separate casings, to deal with two or more fluids, or the present machine could be combined with one such as described in Specification 342,791.
GB2217331A 1931-08-05 1931-08-05 Improvements in and relating to rotary machines for the compression and propulsion of Expired GB384355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2217331A GB384355A (en) 1931-08-05 1931-08-05 Improvements in and relating to rotary machines for the compression and propulsion of

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2217331A GB384355A (en) 1931-08-05 1931-08-05 Improvements in and relating to rotary machines for the compression and propulsion of

Publications (1)

Publication Number Publication Date
GB384355A true GB384355A (en) 1932-12-08

Family

ID=10175130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2217331A Expired GB384355A (en) 1931-08-05 1931-08-05 Improvements in and relating to rotary machines for the compression and propulsion of

Country Status (1)

Country Link
GB (1) GB384355A (en)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460310A (en) * 1943-11-20 1949-02-01 Roots Connersville Blower Corp Screw pump
US2477003A (en) * 1942-07-25 1949-07-26 Joy Mfg Co Rotary helical gear air pump with discharge pressure regulator
US2480818A (en) * 1943-05-11 1949-08-30 Joseph E Whitfield Helical rotary fluid handling device
US2504230A (en) * 1944-08-11 1950-04-18 Frank E Smith Rotary helical compressor or engine
US2519913A (en) * 1943-08-21 1950-08-22 Jarvis C Marble Helical rotary compressor with pressure and volume regulating means
US2588888A (en) * 1949-02-08 1952-03-11 Laval Steam Turbine Co Pump
US2654530A (en) * 1949-08-05 1953-10-06 Eaton Mfg Co Supercharger
US2804260A (en) * 1949-07-11 1957-08-27 Svenska Rotor Maskiner Ab Engines of screw rotor type
US2937599A (en) * 1955-08-25 1960-05-24 Oscar E Rosaen Fluid pump
US2963884A (en) * 1957-04-17 1960-12-13 Atlas Copco Ab Screw-rotor compressors or motors
US2982221A (en) * 1958-07-02 1961-05-02 Joseph E Whitfield Gear pump
DE1109704B (en) * 1958-02-27 1961-06-29 Svenska Rotor Maskiner Ab Schraubenradmaschine
US3088659A (en) * 1960-06-17 1963-05-07 Svenska Rotor Maskiner Ab Means for regulating helical rotary piston engines
US3088658A (en) * 1959-06-04 1963-05-07 Svenska Rotor Maskiner Ab Angularly adjustable slides for screw rotor machines
US3108740A (en) * 1960-06-17 1963-10-29 Svenska Rotor Maskiner Ab Regulating means for rotary piston compressors
US3179330A (en) * 1960-08-30 1965-04-20 James Howden And Company Ltd Rotary engines and compressors
US3180559A (en) * 1962-04-11 1965-04-27 John R Boyd Mechanical vacuum pump
DE1217542B (en) * 1959-06-04 1966-05-26 Svenska Rotor Maskiner Ab Means for controlling a screw rotor machine
US3814557A (en) * 1970-07-04 1974-06-04 Allweiler Ag Fluid displacement apparatus having helical displacement elements
DE2526175A1 (en) * 1974-06-21 1976-01-08 Svenska Rotor Maskiner Ab Means for change in yourself the volumetric capacity of a parallel and external-fluid compressor with meshing engagement
FR2538463A1 (en) * 1982-12-23 1984-06-29 Dba Conical screw volumetric machine
US4579513A (en) * 1984-03-29 1986-04-01 Bernard Zimmern Positive displacement screw machine with separation wall attached to slide valve
FR2684417A1 (en) * 1991-11-28 1993-06-04 Cit Alcatel Vacuum pump of the screw type
US5533887A (en) * 1993-04-27 1996-07-09 Matsushita Electric Industrial Co., Ltd. Fluid rotary apparatus having tapered rotors
US5951266A (en) * 1992-09-03 1999-09-14 Matsushita Electric Industrial Co., Ltd. Evacuating apparatus having interengaging rotors with threads having a decreasing pitch at the exhaust side
EP0965757A2 (en) * 1998-06-17 1999-12-22 The BOC Group plc Vacuum pumps
US6019586A (en) * 1998-01-20 2000-02-01 Sunny King Machinery Co., Ltd. Gradationally contracted screw compression equipment
US6129534A (en) * 1999-06-16 2000-10-10 The Boc Group Plc Vacuum pumps
US6176694B1 (en) * 1999-05-07 2001-01-23 Industrial Technology Research Institute Double screw rotor assembly
US6257839B1 (en) * 2000-02-02 2001-07-10 Industrial Technology Research Institute Double screw rotor assembly with electrically controlled clearance adjustment means
US6312242B1 (en) * 2000-05-12 2001-11-06 Industrial Technology Research Institute Asymmetric double screw rotor assembly
US6379135B2 (en) * 2000-02-24 2002-04-30 The Boc Group Plc Vacuum pumps
WO2010111685A3 (en) * 2009-03-26 2011-01-06 Johnson Controls Technology Company Compressor with a bypass port
CN102777383A (en) * 2011-05-05 2012-11-14 江森自控科技公司 Compressor
US20130156624A1 (en) * 2011-12-16 2013-06-20 Neville D. Kapadia Slide valve for screw compressor
CN101351646B (en) * 2005-12-13 2013-11-06 爱德华兹有限公司 Screw pump
EP2719899A1 (en) 2009-04-17 2014-04-16 Oerlikon Leybold Vacuum GmbH Screw vacuum pump
CN104141606A (en) * 2014-07-07 2014-11-12 扬州大学 Conical double-screw compression pump
EP3252309A1 (en) * 2016-06-01 2017-12-06 Trane International Inc. Intermediate discharge port for a compressor

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477003A (en) * 1942-07-25 1949-07-26 Joy Mfg Co Rotary helical gear air pump with discharge pressure regulator
US2480818A (en) * 1943-05-11 1949-08-30 Joseph E Whitfield Helical rotary fluid handling device
US2519913A (en) * 1943-08-21 1950-08-22 Jarvis C Marble Helical rotary compressor with pressure and volume regulating means
US2460310A (en) * 1943-11-20 1949-02-01 Roots Connersville Blower Corp Screw pump
US2504230A (en) * 1944-08-11 1950-04-18 Frank E Smith Rotary helical compressor or engine
US2588888A (en) * 1949-02-08 1952-03-11 Laval Steam Turbine Co Pump
US2804260A (en) * 1949-07-11 1957-08-27 Svenska Rotor Maskiner Ab Engines of screw rotor type
US2654530A (en) * 1949-08-05 1953-10-06 Eaton Mfg Co Supercharger
US2937599A (en) * 1955-08-25 1960-05-24 Oscar E Rosaen Fluid pump
US2963884A (en) * 1957-04-17 1960-12-13 Atlas Copco Ab Screw-rotor compressors or motors
DE1109704B (en) * 1958-02-27 1961-06-29 Svenska Rotor Maskiner Ab Schraubenradmaschine
US2982221A (en) * 1958-07-02 1961-05-02 Joseph E Whitfield Gear pump
US3088658A (en) * 1959-06-04 1963-05-07 Svenska Rotor Maskiner Ab Angularly adjustable slides for screw rotor machines
DE1217542B (en) * 1959-06-04 1966-05-26 Svenska Rotor Maskiner Ab Means for controlling a screw rotor machine
US3088659A (en) * 1960-06-17 1963-05-07 Svenska Rotor Maskiner Ab Means for regulating helical rotary piston engines
US3108740A (en) * 1960-06-17 1963-10-29 Svenska Rotor Maskiner Ab Regulating means for rotary piston compressors
US3179330A (en) * 1960-08-30 1965-04-20 James Howden And Company Ltd Rotary engines and compressors
US3180559A (en) * 1962-04-11 1965-04-27 John R Boyd Mechanical vacuum pump
US3814557A (en) * 1970-07-04 1974-06-04 Allweiler Ag Fluid displacement apparatus having helical displacement elements
DE2526175A1 (en) * 1974-06-21 1976-01-08 Svenska Rotor Maskiner Ab Means for change in yourself the volumetric capacity of a parallel and external-fluid compressor with meshing engagement
FR2538463A1 (en) * 1982-12-23 1984-06-29 Dba Conical screw volumetric machine
EP0115228A1 (en) * 1982-12-23 1984-08-08 BENDIX France Volumetric machine with conical screws
US4522576A (en) * 1982-12-23 1985-06-11 Societe Anonyme D.B.A. Volumetric machine with conical screws
US4579513A (en) * 1984-03-29 1986-04-01 Bernard Zimmern Positive displacement screw machine with separation wall attached to slide valve
FR2684417A1 (en) * 1991-11-28 1993-06-04 Cit Alcatel Vacuum pump of the screw type
US5951266A (en) * 1992-09-03 1999-09-14 Matsushita Electric Industrial Co., Ltd. Evacuating apparatus having interengaging rotors with threads having a decreasing pitch at the exhaust side
US5533887A (en) * 1993-04-27 1996-07-09 Matsushita Electric Industrial Co., Ltd. Fluid rotary apparatus having tapered rotors
US6019586A (en) * 1998-01-20 2000-02-01 Sunny King Machinery Co., Ltd. Gradationally contracted screw compression equipment
EP0965757A3 (en) * 1998-06-17 2001-01-31 The BOC Group plc Vacuum pumps
EP0965756A2 (en) * 1998-06-17 1999-12-22 The BOC Group plc Screw pump
EP0965758A2 (en) * 1998-06-17 1999-12-22 The BOC Group plc Vacuum pump
US6217305B1 (en) * 1998-06-17 2001-04-17 The Boc Group Plc Screw pumps
US6200116B1 (en) * 1998-06-17 2001-03-13 The Boc Group Plc Vacuum pumps
EP0965756A3 (en) * 1998-06-17 2001-01-31 The BOC Group plc Screw pump
EP0965758A3 (en) * 1998-06-17 2001-01-31 The BOC Group plc Vacuum pump
EP0965757A2 (en) * 1998-06-17 1999-12-22 The BOC Group plc Vacuum pumps
US6176694B1 (en) * 1999-05-07 2001-01-23 Industrial Technology Research Institute Double screw rotor assembly
US6129534A (en) * 1999-06-16 2000-10-10 The Boc Group Plc Vacuum pumps
US6257839B1 (en) * 2000-02-02 2001-07-10 Industrial Technology Research Institute Double screw rotor assembly with electrically controlled clearance adjustment means
US6379135B2 (en) * 2000-02-24 2002-04-30 The Boc Group Plc Vacuum pumps
US6312242B1 (en) * 2000-05-12 2001-11-06 Industrial Technology Research Institute Asymmetric double screw rotor assembly
CN101351646B (en) * 2005-12-13 2013-11-06 爱德华兹有限公司 Screw pump
WO2010111685A3 (en) * 2009-03-26 2011-01-06 Johnson Controls Technology Company Compressor with a bypass port
CN102414448B (en) * 2009-03-26 2015-04-15 江森自控科技公司 Compressor
US9850902B2 (en) 2009-03-26 2017-12-26 Johnson Controls Technology Company Compressor with a bypass port
KR101314129B1 (en) * 2009-03-26 2013-10-04 존슨 컨트롤스 테크놀러지 컴퍼니 Compressor with a bypass port
CN102414448A (en) * 2009-03-26 2012-04-11 江森自控科技公司 Compressor
EP2419640B2 (en) 2009-04-17 2017-09-13 Leybold GmbH Screw-type vacuum pump
EP2719899A1 (en) 2009-04-17 2014-04-16 Oerlikon Leybold Vacuum GmbH Screw vacuum pump
CN102777383B (en) * 2011-05-05 2015-05-20 江森自控科技公司 Compressor
CN102777383A (en) * 2011-05-05 2012-11-14 江森自控科技公司 Compressor
US8899950B2 (en) * 2011-12-16 2014-12-02 Gardner Denver, Inc. Slide valve for screw compressor
US20130156624A1 (en) * 2011-12-16 2013-06-20 Neville D. Kapadia Slide valve for screw compressor
CN104141606A (en) * 2014-07-07 2014-11-12 扬州大学 Conical double-screw compression pump
EP3252309A1 (en) * 2016-06-01 2017-12-06 Trane International Inc. Intermediate discharge port for a compressor

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