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GB1237333A - Improvements in or relating to screw compressors - Google Patents

Improvements in or relating to screw compressors

Info

Publication number
GB1237333A
GB1237333A GB50619/69A GB5061969A GB1237333A GB 1237333 A GB1237333 A GB 1237333A GB 50619/69 A GB50619/69 A GB 50619/69A GB 5061969 A GB5061969 A GB 5061969A GB 1237333 A GB1237333 A GB 1237333A
Authority
GB
United Kingdom
Prior art keywords
bores
opening
control slide
compressor
oct
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
GB50619/69A
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.)
Gutehoffnungshutte Sterkrade AG
Original Assignee
Gutehoffnungshutte Sterkrade AG
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 Gutehoffnungshutte Sterkrade AG filed Critical Gutehoffnungshutte Sterkrade AG
Publication of GB1237333A publication Critical patent/GB1237333A/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)

Abstract

1,237,333. Screw compressors. GUTEHOFFNUNGSHUTTE STERKRADE A. G. Oct.15, 1969 [Oct. 24, 1968], No.50619/69. Heading F1F. To regulate the output of a screw compressor having main and auxiliary intermeshing screwed rotors 2, 3, Figs. 1, 4 driven by a worm 4 and worm wheel 5, an axially adjustable control slide 7 has a plurality of transverse bores 17 communicating with the compressor working chamber through bores 18 and with an elongate feed opening 19<SP>1</SP> from a passage 19 supplied with lubricating oil under pressure. As the control slide 7 is adjusted rightwardly on rotation of a screwed shaft 9 either by a motor (not shown) or by means of a handwheel 10, the rightmost bore 17<SP>1</SP> is moved out of communication with the opening 19<SP>1</SP> whilst another bore 17<SP>11</SP> is brought into communication with the opening 19<SP>1</SP> so that the zone of the rotors receiving the oil is only insignificantly displaced with decrease in compressor output. As shown, the opening 19<SP>1</SP> co-operates with five bores at any one time, the number may however be different and there may be more than one opening 19<SP>1</SP> with associated bores. In an alternative embodiment, lubricant may be admitted to an annular chamber 21, Fig. 5, in a stationary piston 20 which is supplied through bores 22, 23 by a lubricating pump (not shown). On adjustment of a control slide 7<SP>1</SP>, bores 18 are brought into and out of register with the chamber 21 in a similar manner to the bores 17 with respect to the opening 19<SP>1</SP>.
GB50619/69A 1968-10-24 1969-10-15 Improvements in or relating to screw compressors Expired GB1237333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681804884 DE1804884A1 (en) 1968-10-24 1968-10-24 Screw compressor with two interlocking screw rotors and an axially adjustable control slide for flow control and single injection

Publications (1)

Publication Number Publication Date
GB1237333A true GB1237333A (en) 1971-06-30

Family

ID=5711373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50619/69A Expired GB1237333A (en) 1968-10-24 1969-10-15 Improvements in or relating to screw compressors

Country Status (7)

Country Link
BE (1) BE740289A (en)
DE (1) DE1804884A1 (en)
ES (1) ES372757A1 (en)
FR (1) FR2021476A1 (en)
GB (1) GB1237333A (en)
OA (1) OA03154A (en)
SE (1) SE344351B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005949A (en) * 1974-10-10 1977-02-01 Vilter Manufacturing Corporation Variable capacity rotary screw compressor
US4025244A (en) * 1974-12-24 1977-05-24 Hokuetsu Kogyo Co., Ltd. Rotary compressor of liquid-cooled type provided with means for adjusting amount of liquid and volume of gas
WO2004051089A1 (en) * 2002-12-03 2004-06-17 Bitzer Kühlmaschinenbau Gmbh Screw compressor
EP2134924A1 (en) * 2007-03-29 2009-12-23 Vilter Manufacturing Llc Compressor having a high pressure slide valve assembly
WO2012109302A2 (en) 2011-02-10 2012-08-16 Trane International Inc. Lubricant control valve for a screw compressor
CN104912804A (en) * 2014-03-12 2015-09-16 珠海格力电器股份有限公司 Slide valve assembly and compressor comprising same
WO2016121021A1 (en) * 2015-01-28 2016-08-04 三菱電機株式会社 Screw compressor
EP3674553A1 (en) * 2018-12-26 2020-07-01 Trane International Inc. Variable volume ratio screw compressor
EP3674554A1 (en) * 2018-12-26 2020-07-01 Trane International Inc. Lubricant injection for a screw compressor
CN117450077A (en) * 2023-10-24 2024-01-26 武汉纺织大学 Instant oil supply device for screw type refrigeration compressor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734653A (en) * 1971-08-23 1973-05-22 S Edstrom Screw compressor
GB1517156A (en) * 1974-06-21 1978-07-12 Svenska Rotor Maskiner Ab Screw compressor including means for varying the capacity thereof
GB1555329A (en) * 1975-08-21 1979-11-07 Hall Thermotank Prod Ltd Rotary fluid machines
JPS6117191U (en) * 1984-07-04 1986-01-31 株式会社神戸製鋼所 Screw compressor
DE19523212C2 (en) * 1995-06-27 2001-08-02 Alup Kompressoren Gmbh Screw compressor

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005949A (en) * 1974-10-10 1977-02-01 Vilter Manufacturing Corporation Variable capacity rotary screw compressor
US4025244A (en) * 1974-12-24 1977-05-24 Hokuetsu Kogyo Co., Ltd. Rotary compressor of liquid-cooled type provided with means for adjusting amount of liquid and volume of gas
WO2004051089A1 (en) * 2002-12-03 2004-06-17 Bitzer Kühlmaschinenbau Gmbh Screw compressor
US7201569B2 (en) 2002-12-03 2007-04-10 Bitzer Kuehlmaschinenbau Gmbh Screw compressor
EP2134924A1 (en) * 2007-03-29 2009-12-23 Vilter Manufacturing Llc Compressor having a high pressure slide valve assembly
EP2134924A4 (en) * 2007-03-29 2014-12-03 Vilter Mfg Llc Compressor having a high pressure slide valve assembly
WO2012109302A2 (en) 2011-02-10 2012-08-16 Trane International Inc. Lubricant control valve for a screw compressor
EP2673509A4 (en) * 2011-02-10 2015-09-02 Trane Int Inc Lubricant control valve for a screw compressor
CN104912804A (en) * 2014-03-12 2015-09-16 珠海格力电器股份有限公司 Slide valve assembly and compressor comprising same
WO2016121021A1 (en) * 2015-01-28 2016-08-04 三菱電機株式会社 Screw compressor
EP3674553A1 (en) * 2018-12-26 2020-07-01 Trane International Inc. Variable volume ratio screw compressor
EP3674554A1 (en) * 2018-12-26 2020-07-01 Trane International Inc. Lubricant injection for a screw compressor
CN111379706A (en) * 2018-12-26 2020-07-07 特灵国际有限公司 Lubricant injection for screw compressors
US10876531B2 (en) 2018-12-26 2020-12-29 Trane International Inc. Lubricant injection for a screw compressor
US11306721B2 (en) * 2018-12-26 2022-04-19 Trane International Inc. Variable volume ratio screw compressor
US11841020B2 (en) 2018-12-26 2023-12-12 Trane International Inc. Variable volume ratio screw compressor
CN117450077A (en) * 2023-10-24 2024-01-26 武汉纺织大学 Instant oil supply device for screw type refrigeration compressor

Also Published As

Publication number Publication date
FR2021476A1 (en) 1970-07-24
ES372757A1 (en) 1972-02-16
BE740289A (en) 1970-03-16
SE344351B (en) 1972-04-10
OA03154A (en) 1970-12-15
DE1804884A1 (en) 1970-09-17

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