DE3473326D1 - A screw compressor incorporating a slide valve - Google Patents

A screw compressor incorporating a slide valve

Info

Publication number
DE3473326D1
DE3473326D1 DE8484303436T DE3473326T DE3473326D1 DE 3473326 D1 DE3473326 D1 DE 3473326D1 DE 8484303436 T DE8484303436 T DE 8484303436T DE 3473326 T DE3473326 T DE 3473326T DE 3473326 D1 DE3473326 D1 DE 3473326D1
Authority
DE
Germany
Prior art keywords
slide valve
screw compressor
compressor
pair
curved surfaces
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
DE8484303436T
Other languages
German (de)
Inventor
Shoji Yoshimura
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Application granted granted Critical
Publication of DE3473326D1 publication Critical patent/DE3473326D1/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

Landscapes

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

Abstract

The slide valve (31) screw compressor has a valve with a chevron-shape surface, consisting of a pair of curved surfaces. These form parts of the walls of the compressor chamber, accommodating a pair of intermeshed male and female screw rotors. The slide valve is slidable axially of the rotors for connecting the rotor chamber with a suction port via an adjustably variable area providing volumetric compressor control. The slide valve is retractably protruded into a suction casing at a fore end of the side of the suction port (11). The opposite outer corners of the curved surfaces are cut off at the fore end at a preset angle with the axis. This provides a triangular section with a forwardly reduced width at the protruded end.
DE8484303436T 1984-05-21 1984-05-21 A screw compressor incorporating a slide valve Expired DE3473326D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19840303436 EP0162157B1 (en) 1984-05-21 1984-05-21 A screw compressor incorporating a slide valve

Publications (1)

Publication Number Publication Date
DE3473326D1 true DE3473326D1 (en) 1988-09-15

Family

ID=8192639

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484303436T Expired DE3473326D1 (en) 1984-05-21 1984-05-21 A screw compressor incorporating a slide valve

Country Status (2)

Country Link
EP (1) EP0162157B1 (en)
DE (1) DE3473326D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE463323B (en) * 1989-03-08 1990-11-05 Stal Refrigeration Ab AGENTS FOR REGULATION OF THE INTERNAL VOLUME TREATMENT COUNTRY IN A ROTATING COMPRESSOR
US5496388A (en) * 1994-07-01 1996-03-05 Air Liquide America Corporation System for compressing air and extracting nitrogen from compressed air
GB9702342D0 (en) 1997-02-05 1997-03-26 Rotary Power Couple Engines Li Rotary device
JP6385708B2 (en) * 2014-04-18 2018-09-05 日立ジョンソンコントロールズ空調株式会社 Screw compressor
FR3034464B1 (en) 2015-04-03 2017-03-24 Snecma COOLING THE OIL CIRCUIT OF A TURBOMACHINE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118800B (en) * 1959-06-04 1961-12-07 Svenska Rotor Maskiner Ab Device for reversing the direction of rotation of a helical gear machine working as an expansion machine
FR1258651A (en) * 1960-06-01 1961-04-14 Svenska Rotor Maskiner Ab Adjusting device for machines with helical rotors
US3936239A (en) * 1974-07-26 1976-02-03 Dunham-Bush, Inc. Undercompression and overcompression free helical screw rotary compressor
DE3221849A1 (en) * 1982-06-09 1983-12-15 Aerzener Maschinenfabrik Gmbh, 3251 Aerzen SCREW COMPRESSOR

Also Published As

Publication number Publication date
EP0162157A1 (en) 1985-11-27
EP0162157B1 (en) 1988-08-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee