SE9001640D0 - SCREW COMPRESSOR WITH AXIAL BALANCING BODY - Google Patents

SCREW COMPRESSOR WITH AXIAL BALANCING BODY

Info

Publication number
SE9001640D0
SE9001640D0 SE9001640A SE9001640A SE9001640D0 SE 9001640 D0 SE9001640 D0 SE 9001640D0 SE 9001640 A SE9001640 A SE 9001640A SE 9001640 A SE9001640 A SE 9001640A SE 9001640 D0 SE9001640 D0 SE 9001640D0
Authority
SE
Sweden
Prior art keywords
compressor
capacity
valve
cut
drainage channel
Prior art date
Application number
SE9001640A
Other languages
Swedish (sv)
Other versions
SE466166B (en
SE9001640L (en
Inventor
F Soederlund
Original Assignee
Svenska Rotor Maskiner Ab
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 Svenska Rotor Maskiner Ab filed Critical Svenska Rotor Maskiner Ab
Priority to SE9001640A priority Critical patent/SE466166B/en
Publication of SE9001640D0 publication Critical patent/SE9001640D0/en
Priority to PCT/SE1991/000309 priority patent/WO1991017345A1/en
Publication of SE9001640L publication Critical patent/SE9001640L/en
Publication of SE466166B publication Critical patent/SE466166B/en

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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the pump

Landscapes

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

Abstract

In a rotary screw compressor with capacity regulating means (14) the axial gas forces on the rotors (12) are balanced by hydraulic thrust balancing means (18). When the compressor is working at reduced capacity below a certain level the thrust balancing force is inactivated. This is accomplished in that the pressure oil supplied to the thrust balancing means (18) is drained by opening a cut-off valve (28) controlling a drainage channel (26) connected to the oil supply channel (24). According to the invention the cut-off valve (28) is directly governed by the capacity regulating means (14) so that when these means are in a position representing a capacity below a certain level, typically about 75 % of full capacity, the drainage channel (26) is connected to a low pressure source. The capacity regulating means can preferably act as the cut-off valve which in the open position connects the drainage channel (26) to the low pressure port (44) of the compressor through the compressor working space (13).
SE9001640A 1990-05-08 1990-05-08 SCREW COMPRESSOR WITH AXIAL BALANCING BODY SE466166B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9001640A SE466166B (en) 1990-05-08 1990-05-08 SCREW COMPRESSOR WITH AXIAL BALANCING BODY
PCT/SE1991/000309 WO1991017345A1 (en) 1990-05-08 1991-04-30 Rotary screw compressor with thrust balancing means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9001640A SE466166B (en) 1990-05-08 1990-05-08 SCREW COMPRESSOR WITH AXIAL BALANCING BODY

Publications (3)

Publication Number Publication Date
SE9001640D0 true SE9001640D0 (en) 1990-05-08
SE9001640L SE9001640L (en) 1991-11-09
SE466166B SE466166B (en) 1992-01-07

Family

ID=20379409

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001640A SE466166B (en) 1990-05-08 1990-05-08 SCREW COMPRESSOR WITH AXIAL BALANCING BODY

Country Status (2)

Country Link
SE (1) SE466166B (en)
WO (1) WO1991017345A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469396B (en) * 1991-11-13 1993-06-28 Svenska Rotor Maskiner Ab SCREW ROTATOR WITH AXIAL BALANCED STORES
US9022760B2 (en) 2011-11-02 2015-05-05 Trane International Inc. High pressure seal vent
US11067129B2 (en) * 2019-09-18 2021-07-20 Aktiebolaget Skf Rolling bearing for refrigerant compressor
CN112833093A (en) 2019-11-25 2021-05-25 斯凯孚公司 Bearing arrangement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388854A (en) * 1966-06-23 1968-06-18 Atlas Copco Ab Thrust balancing in rotary machines
US4964790A (en) * 1989-10-10 1990-10-23 Sundstrand Corporation Automatic regulation of balancing pressure in a screw compressor

Also Published As

Publication number Publication date
SE466166B (en) 1992-01-07
SE9001640L (en) 1991-11-09
WO1991017345A1 (en) 1991-11-14

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