GB1416510A - Screw compressor with rotary valve - Google Patents

Screw compressor with rotary valve

Info

Publication number
GB1416510A
GB1416510A GB2336874A GB2336874A GB1416510A GB 1416510 A GB1416510 A GB 1416510A GB 2336874 A GB2336874 A GB 2336874A GB 2336874 A GB2336874 A GB 2336874A GB 1416510 A GB1416510 A GB 1416510A
Authority
GB
United Kingdom
Prior art keywords
valve
ports
bores
port
inlet
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
GB2336874A
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 GB1416510A publication Critical patent/GB1416510A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary-Type Compressors (AREA)

Abstract

1416510 Screw compressors GARDNER-DENVER CO 24 May 1974 [12 Nov 1973] 23368/74 Heading F1F A helical screw compressor 10 comprises a cylindrical chamber 56 having openings 58, 60 leading to the inlet port 48 and having respective sets of auxiliary ports 62, 64 which communicate with rotor bores 16, 14 respectively, and a rotary control valve-member 66 disposed in chamber 56 and having a helical stepped control edge 96 parallel with the long sides of the oblique ports 62 so that rotation of valve-member 66 progressively covers or uncovers the ports 62 and 64, the valvemember 66 being turned by a wheel 88 which rotates a shaft 86 with a worm-wheel Fig. 3, (not shown) which engages a gear 82 on the valve-member shaft 70, and there being radial bores 100, 102, 104, 106, 108, 110 in valve-member 66 which lead from a central axial passage 90 to convey lubricant from passage 90 to the working chambers between the rotors 26, 28 just after each working chamber has closed itself from the inlet 48. The valve-member 66 is shown in perspective in Fig. 6 and in planar projection in Fig. 8 where the valve-member is illustrated as uncovering one port 64 and two ports 62, i.e. about a 25% reduction from full capacity, and where ports 102 communicate with a port 64 at a location such that liquid would only be injected after the working chamber is closed from the inlet. The auxiliary ports 100-110 decrease in cross-section towards the discharge end so as to reduce the amount of liquid injected as the capacity reduces at constant pressure or to keep it constant if pressure increases as capacity decreases, the compressor being described in use in a system of the latter type Fig. 2, (not shown). An alternative embodiment is also described Figs. 11 to 15, (not shown) in which the inlet port is axial instead of radial, the valve turning means are altered, the helical edge of the valvemember is not stepped, and the pairs of auxiliary bores are replaced by single bores leading into suitably shaped slots in the circumference of the valve-member.
GB2336874A 1973-11-12 1974-05-24 Screw compressor with rotary valve Expired GB1416510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US415279A US3874828A (en) 1973-11-12 1973-11-12 Rotary control valve for screw compressors

Publications (1)

Publication Number Publication Date
GB1416510A true GB1416510A (en) 1975-12-03

Family

ID=23645067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2336874A Expired GB1416510A (en) 1973-11-12 1974-05-24 Screw compressor with rotary valve

Country Status (6)

Country Link
US (1) US3874828A (en)
JP (1) JPS5315209B2 (en)
BE (1) BE816968A (en)
CA (1) CA999274A (en)
GB (1) GB1416510A (en)
ZA (1) ZA743398B (en)

Families Citing this family (49)

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GB1517156A (en) * 1974-06-21 1978-07-12 Svenska Rotor Maskiner Ab Screw compressor including means for varying the capacity thereof
JPS5930919B2 (en) * 1974-12-24 1984-07-30 北越工業 （株） Liquid volume and gas capacity adjustment device for liquid-cooled rotary compressors
US3986801A (en) * 1975-05-06 1976-10-19 Frick Company Screw compressor
US4052135A (en) * 1976-05-11 1977-10-04 Gardner-Denver Company Control system for helical screw compressor
FR2459384A1 (en) * 1979-06-18 1981-01-09 Zimmern Bernard METHOD FOR ASYMMETRICALLY REGULATING MONOVIS COMPRESSORS
SE444601B (en) * 1983-10-24 1986-04-21 Stal Refrigeration Ab DEVICE FOR VOLUME CAPACITY CONTROL OF A SCREW COMPRESSOR
US4553911A (en) * 1983-11-22 1985-11-19 Frick Company Method of coding the oil in screw compressors equipped with automatic variable volume ratio
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
US4560333A (en) * 1984-02-07 1985-12-24 Hitachi, Ltd. Screw compressor
US4878818A (en) * 1988-07-05 1989-11-07 Carrier Corporation Common compression zone access ports for positive displacement compressor
US4909716A (en) * 1988-10-19 1990-03-20 Dunham-Bush Screw step drive internal volume ratio varying system for helical screw rotary compressor
US5352098A (en) * 1993-04-22 1994-10-04 Ingersoll-Rand Company Turn valve control system for a rotary screw compressor
US7624356B1 (en) 2000-06-21 2009-11-24 Microsoft Corporation Task-sensitive methods and systems for displaying command sets
US6883168B1 (en) 2000-06-21 2005-04-19 Microsoft Corporation Methods, systems, architectures and data structures for delivering software via a network
US7000230B1 (en) 2000-06-21 2006-02-14 Microsoft Corporation Network-based software extensions
DE10258145A1 (en) * 2002-12-03 2004-06-24 Bitzer Kühlmaschinenbau Gmbh screw compressors
EP1567770B1 (en) * 2002-12-03 2017-01-18 BITZER Kühlmaschinenbau GmbH Screw compressor
US7153106B2 (en) * 2003-01-16 2006-12-26 R. Conrader Company Air compressor unit inlet control
US7415672B1 (en) 2003-03-24 2008-08-19 Microsoft Corporation System and method for designing electronic forms
US7275216B2 (en) 2003-03-24 2007-09-25 Microsoft Corporation System and method for designing electronic forms and hierarchical schemas
US7370066B1 (en) 2003-03-24 2008-05-06 Microsoft Corporation System and method for offline editing of data files
US7913159B2 (en) 2003-03-28 2011-03-22 Microsoft Corporation System and method for real-time validation of structured data files
US7406660B1 (en) 2003-08-01 2008-07-29 Microsoft Corporation Mapping between structured data and a visual surface
US7334187B1 (en) 2003-08-06 2008-02-19 Microsoft Corporation Electronic form aggregation
US7937651B2 (en) 2005-01-14 2011-05-03 Microsoft Corporation Structural editing operations for network forms
US20060158023A1 (en) * 2005-01-14 2006-07-20 The Boler Company Continuous radius axle and fabricated spindle assembly
WO2006110180A1 (en) * 2005-04-11 2006-10-19 Carrier Corporation Compressor muffler
US8010515B2 (en) 2005-04-15 2011-08-30 Microsoft Corporation Query to an electronic form
US7488164B2 (en) * 2005-05-23 2009-02-10 Eaton Corporation Optimized helix angle rotors for Roots-style supercharger
US8200975B2 (en) 2005-06-29 2012-06-12 Microsoft Corporation Digital signatures for network forms
DE102005040921B4 (en) * 2005-08-30 2008-10-23 Dienes Werke für Maschinenteile GmbH & Co KG Dry running screw compressor with pneumatically controlled vent valve
US8001459B2 (en) 2005-12-05 2011-08-16 Microsoft Corporation Enabling electronic documents for limited-capability computing devices
US20080279708A1 (en) * 2005-12-23 2008-11-13 Gardner Denver, Inc. Screw Compressor with Oil Feed System
EP2182216B1 (en) * 2007-08-07 2017-06-14 Daikin Industries, Ltd. Single-screw compressor
US8348649B2 (en) * 2007-08-07 2013-01-08 Daikin Industries, Ltd. Single screw compressor and a method for processing a screw rotor
US20100209280A1 (en) * 2007-10-01 2010-08-19 Carrier Corporation Screw compressor pulsation damper
CN101821479A (en) * 2007-10-10 2010-09-01 开利公司 Slide valve system for screw compressor
US8366405B2 (en) * 2007-12-17 2013-02-05 Daikin Industries, Ltd. Screw compressor with capacity control slide valve
US20090313743A1 (en) * 2008-06-20 2009-12-24 Craig Jason Hofmeyer Pants with saggy pants control system
ES2570729T3 (en) * 2008-06-24 2016-05-20 Carrier Corp Automatic volume ratio variation for a rotary screw compressor
US8539769B2 (en) * 2009-10-14 2013-09-24 Craig N. Hansen Internal combustion engine and supercharger
WO2011048618A1 (en) * 2009-10-19 2011-04-28 Refcomp Spa Screw compressor with variable compression ratio
US9057373B2 (en) 2011-11-22 2015-06-16 Vilter Manufacturing Llc Single screw compressor with high output
US8899950B2 (en) * 2011-12-16 2014-12-02 Gardner Denver, Inc. Slide valve for screw compressor
CN103486037B (en) * 2012-06-12 2016-07-20 珠海格力电器股份有限公司 Slide valve, slide valve adjusting mechanism, screw compressor and capacity adjusting method thereof
CN103790824B (en) * 2014-01-21 2016-08-17 深圳寿力亚洲实业有限公司 Low loading start up screw-rod air compressor
US10808699B2 (en) * 2017-09-28 2020-10-20 Ingersoll-Rand Industrial U.S., Inc. Suction side slide valve for a screw compressor
EP4374075A1 (en) * 2021-07-22 2024-05-29 Hitachi Global Air Power Us, LLC Spiral valve for screw capacity control
WO2023038633A1 (en) * 2021-09-10 2023-03-16 Sullair, Llc Compact variable volume index valve for screw compressor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073514A (en) * 1956-11-14 1963-01-15 Svenska Rotor Maskiner Ab Rotary compressors
US3088658A (en) * 1959-06-04 1963-05-07 Svenska Rotor Maskiner Ab Angularly adjustable slides for screw rotor machines
GB1171291A (en) * 1965-10-12 1969-11-19 Svenska Rotor Maskiner Ab Screw Rotor Machines

Also Published As

Publication number Publication date
ZA743398B (en) 1976-01-28
CA999274A (en) 1976-11-02
BE816968A (en) 1974-10-16
JPS5315209B2 (en) 1978-05-23
AU6959274A (en) 1975-12-04
US3874828A (en) 1975-04-01
JPS5079809A (en) 1975-06-28

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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