GB1162067A - Improvements in Means for Unloading and Controlling Compressor Units - Google Patents

Improvements in Means for Unloading and Controlling Compressor Units

Info

Publication number
GB1162067A
GB1162067A GB26481/67A GB2648167A GB1162067A GB 1162067 A GB1162067 A GB 1162067A GB 26481/67 A GB26481/67 A GB 26481/67A GB 2648167 A GB2648167 A GB 2648167A GB 1162067 A GB1162067 A GB 1162067A
Authority
GB
United Kingdom
Prior art keywords
valve
line
pressure
chamber
compressor
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
GB26481/67A
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.)
Atlas Copco AB
Original Assignee
Atlas Copco 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 Atlas Copco AB filed Critical Atlas Copco AB
Publication of GB1162067A publication Critical patent/GB1162067A/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
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • 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
    • 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
    • F04C28/02—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for several pumps connected in series or in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1,162,067. Fluid-pressure servomotor systems. ATLAS COPCO A. B. June 8, 1967 [June 23, 1966], No. 26481/67. Heading G3P. A two-stage screw-action compressor 2, 3 has a throttle valve 6 in the intake duct 4 and an unloading valve 22 in a vent line 17 connected to the delivery line 12. Valves 6, 22 are biased by spring 33 to the positions shown. On starting the compressor, a vacuum is created in duct 5 and acts, via restricted line 30, line 31 and pilot valve chambers 34, 36, in chambers 28, 29 of rolling diaphragm motor 26. To load the compressor, a spool 66 is depressed to admit oil under pressure to line 46 to lift diaphragm 48 to reposition valve 37, to seat head 38 and unseat head 39. The vacuum in line 8 has moved flap 54 to the position shown and inlet pressure in duct 4 now acts via chamber 53 and lines 51, 70 in chamber 29 to move the valve 6 to an open position and the valve 22 to a closed position. Oil pressure in line 68 maintains the spool 66 in its depressed position. Flap 54 is now moved by the interstage pressure in line 8 to seat at 57 and admit this pressure to chamber 29 to maintain valve 6 open and valve 22 closed. When the pressure in receiver 14 reaches the desired level, valve 72 admits this pressure to chamber 74 to return valve 37 to the position shown. The pressure across diaphragm 26 is thereby equalized and the valves 6, 22 are returned to the unloading positions shown. Line 58 may alternately connect with the outlet duct 12. In the modification Fig. 2 (not shown), valve 60 is replaced by a solenoid operated valve (76) the coil of which is in circuit with a pressure switch (77) replacing valve 72. The compressor motor contactors (81) are in parallel with a time delay relay operating a switch in the coil circuit. In Fig.3 (not shown), the valves (37, 76) of (Fig. 2) are replaced by a solenoid operated valve (176) serving to connect chamber 29 alternately to chamber 28 and to the output of valve 52. The coil of valve (176) is in a circuit identical to that of (Fig. 2). The compressors may be screw-type and, if a single stage compressor is used, line 56 communicates with the output duct.
GB26481/67A 1966-06-23 1967-06-08 Improvements in Means for Unloading and Controlling Compressor Units Expired GB1162067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US564474A US3367562A (en) 1966-06-23 1966-06-23 Means for unloading and controlling compressor units

Publications (1)

Publication Number Publication Date
GB1162067A true GB1162067A (en) 1969-08-20

Family

ID=24254613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26481/67A Expired GB1162067A (en) 1966-06-23 1967-06-08 Improvements in Means for Unloading and Controlling Compressor Units

Country Status (5)

Country Link
US (1) US3367562A (en)
BE (1) BE700265A (en)
DE (1) DE1628144C3 (en)
GB (1) GB1162067A (en)
SE (1) SE315066B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211634A (en) * 1987-10-28 1989-07-05 Stal Refrigeration Ab A control section for a control system for controlling the internal volume of a rotary compressor
CN115839357A (en) * 2023-02-10 2023-03-24 青岛力克川液压机械有限公司 Delay brake control valve for hydraulic rotary motor

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448916A (en) * 1967-06-16 1969-06-10 Ingersoll Rand Co Unloading system for compressors
US3860363A (en) * 1973-05-10 1975-01-14 Chicago Pneumatic Tool Co Rotary compressor having improved control system
DD110920A1 (en) * 1974-02-22 1975-01-12
US4171188A (en) * 1976-08-03 1979-10-16 Chicago Pneumatic Tool Company Rotary air compressors with intake valve control and lubrication system
IT1103276B (en) * 1977-05-25 1985-10-14 Hydrovane Compressor OIL SEAL CAPSULISING COMPRESSOR
DE2737677C2 (en) * 1977-08-20 1984-05-10 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Device for regulating the flow rate of compressors
US4219312A (en) * 1978-10-20 1980-08-26 Hitachi, Ltd. Volume control system for compressor unit
DE2944053A1 (en) * 1979-10-31 1981-05-14 Isartaler Schraubenkompressoren Gmbh, 8192 Gertsried INTAKE CONTROL DEVICE FOR A COMPRESSOR
US4227380A (en) * 1979-11-09 1980-10-14 Frick Company Single casing, multiple duty valve
JPS6062690A (en) * 1983-09-16 1985-04-10 Toyoda Autom Loom Works Ltd Rotary compressor enable of partial load operation
JPS60101295A (en) * 1983-11-08 1985-06-05 Sanden Corp Compression capacity varying type scroll compressor
JPS60249694A (en) * 1984-05-25 1985-12-10 Hitachi Ltd Starting unloader device for compressor
JPH0739828B2 (en) * 1986-09-01 1995-05-01 株式会社日立製作所 Capacity control device for multi-stage compressor
JP2966575B2 (en) * 1991-05-29 1999-10-25 株式会社日立製作所 Oil-free scroll compressor
US5211542A (en) * 1992-10-19 1993-05-18 Carrier Corporation Method and apparatus for oil sump pressure control
BE1007135A6 (en) * 1993-06-16 1995-04-04 Atlas Copco Airpower Nv Control device with start and stop device for screw compressors, and thus used start and stop device.
JP3549631B2 (en) * 1995-06-26 2004-08-04 サンデン株式会社 Variable capacity scroll compressor
JP3817420B2 (en) * 2000-10-31 2006-09-06 株式会社日立産機システム Variable rotational speed oil-free screw compressor and operation control method thereof
BE1015079A4 (en) * 2002-08-22 2004-09-07 Atlas Copco Airpower Nv Compressor with pressure relief.
DE102005040921B4 (en) * 2005-08-30 2008-10-23 Dienes Werke für Maschinenteile GmbH & Co KG Dry running screw compressor with pneumatically controlled vent valve
US20100054958A1 (en) * 2006-09-05 2010-03-04 New York Air Brake Corporation Oil-free air compressor system with inlet throttle
US9145877B2 (en) 2011-11-22 2015-09-29 Thermo King Corporation Compressor unloading device
CN107575426B (en) * 2017-09-21 2023-09-15 中国三冶集团有限公司 Hydraulic system of large-caliber pipe bending machine for oxygen mixed natural gas power pipe network
CN115406134A (en) * 2021-05-27 2022-11-29 上海兴邺材料科技有限公司 Air conditioning system and control method thereof
US11841718B1 (en) 2022-07-08 2023-12-12 Ingersoll-Rand Industrial U.S., Inc. Pneumatic inlet/blowdown valve assembly

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE76256C (en) * J. P. Sauer u. Sohn in Suhl Extraction device for break-barrel rifles
US1968985A (en) * 1933-10-27 1934-08-07 Dayton Air Compressor Company Vacuum controlled unloading valve
US2044867A (en) * 1934-06-01 1936-06-23 Ingersoll Rand Co Regulating device for vacuum pumps
US2213743A (en) * 1938-12-01 1940-09-03 Robert G Miner Control apparatus for unloading compressors
US2637485A (en) * 1946-10-30 1953-05-05 Yeomans Brothers Co Unloading system for compressors
US2661145A (en) * 1947-03-11 1953-12-01 Guardite Corp Antisurge control for refrigeration compressors
US2613026A (en) * 1948-11-13 1952-10-07 Sun Oil Co Vacuum pump suction control
US3191854A (en) * 1960-06-02 1965-06-29 Atlas Copco Ab Compressor units
US3255954A (en) * 1962-07-06 1966-06-14 Atlas Copco Ab Positive displacement compressors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211634A (en) * 1987-10-28 1989-07-05 Stal Refrigeration Ab A control section for a control system for controlling the internal volume of a rotary compressor
GB2211634B (en) * 1987-10-28 1992-03-25 Stal Refrigeration Ab A combination of a rotary compressor and a control system
CN115839357A (en) * 2023-02-10 2023-03-24 青岛力克川液压机械有限公司 Delay brake control valve for hydraulic rotary motor
CN115839357B (en) * 2023-02-10 2024-01-12 青岛力克川液压机械有限公司 Delay brake control valve for hydraulic rotary motor

Also Published As

Publication number Publication date
US3367562A (en) 1968-02-06
SE315066B (en) 1969-09-22
BE700265A (en) 1967-12-01
DE1628144C3 (en) 1979-06-13
DE1628144A1 (en) 1971-10-07
DE1628144B2 (en) 1978-10-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee