US3669579A - Compressors - Google Patents

Compressors Download PDF

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Publication number
US3669579A
US3669579A US58764A US3669579DA US3669579A US 3669579 A US3669579 A US 3669579A US 58764 A US58764 A US 58764A US 3669579D A US3669579D A US 3669579DA US 3669579 A US3669579 A US 3669579A
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US
United States
Prior art keywords
oil
pressure
compressor
air
valve
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 - Lifetime
Application number
US58764A
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English (en)
Inventor
Alan Carter
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.)
Hydrovane Compressor Co Ltd
Original Assignee
Hydrovane Compressor Co 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 Hydrovane Compressor Co Ltd filed Critical Hydrovane Compressor Co Ltd
Application granted granted Critical
Publication of US3669579A publication Critical patent/US3669579A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/16—Filtration; Moisture separation
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S418/00—Rotary expansible chamber devices
    • Y10S418/01—Non-working fluid separation

Definitions

  • a compressor of the eccentric vane type includes a rotor having a number of sliding vanes mounted to rotate about an eccentric axis in a cylinder in a stator, affording a crescent-shaped space divided by the vanes into a number of working chambers, and has means for delivering oil into the working chambers, and/or the air inlet thereto, from a sump surrounding the lower part of the stator, characterised in that the air is delivered from the stator through a number of delivery ports distributed along the length of the stator into a chamber which extends down at points distributed along its length to the surface of the oil in the sump and affords a deflecting wall opposite the delivery ports on which oil can be deposited from the air and can dribble down into the pool of oil.
  • the deecting wall may be afforded by a part-cylindrical shield dividing an annular chamber located about the stator into inner and outer compartments which comrnunicate with one another at the bottom through a gap or an opening in the shield and together form the oil sump. While at the top they communicate with one another only at a first end, while the outer compartment has an outlet at the opposite, or second, end, so that the compressed air from the stator has to flow longitudinally first along the inner compartment to the first end, where it is deflected and decelerated to ow in the opposite direction through the outer compartment.
  • a compressor of eccentric vane type includes a rotor having a number of sliding vanes mounted to rotate about an eccentric axis, in a cylinder in a stator, affording a crescent-shaped space divided by the vanes into a number of working chambers, and has means for delivering oil into the working charnbers and/or air inlet thereto from a sump surrounding the lower part of the stator, in which the casing comprises a main casting supported at one end (referred to as the driving end) where it is connected to a driving motor, and affording a pair of tunnels (open at the opposite or inlet end), a lower tunnel in which the stator is fitted, and an upper tunnel which accommodates a final oil separator in the form of a tube which is accessible by removing a cover from the inlet end of the upper tunnel.
  • the nal oil separator may be of ceramic material.
  • the lower tunnel at its inlet end may have a cover which is removable to provide access to an off-loading valve closing the inlet when the delivery pressure exceeds a predetermined value.
  • the off-loading valve may be controlled by a servo valve disposed in a transverse horizontal bore in the bottom of the casting at its inlet end and responding to oil pressure to admit such pressure to a piston surface of the oifloading valve.
  • the upper tunnel may be closed by a cover incorporating a minimum pressure valve through which the compressed air is delivered and which closes if the delivery pressure falls below a given pressure to prevent further fall of pressure.
  • FIG. l is a longitudinal section generally on the line 1-1 of FIG. 2 of a compressor of the eccentric vane type
  • FIG. 2 is a section generally on the line 2-2 of FIG. l]
  • FIG. 6 is a sectional view of a vacuum relief valve
  • FIG. 7 is a plan view showing the delivery ports distributed along the length of the cylinder.
  • the compressor comprises a main casting 10 consisting of a cylindrical lower part 11 and a generally pentagonal upper part 12 which respectively afford a lower tunnel and an upper tunnel.
  • the upper tunnel accommodates a final separator 13 and is closed at one end which will be termed the drive end, to the right in FIG. l, by a drive end upper cover 14 and at its opposite, or intake, end by an intake end upper cover 15.
  • the compressor is provided with, and mounted upon, a structure that will be termed a lantern comprising a pair of rings 37 and 38 connected together by integral spacers 39 and a third ring 46 connected to the ring 38 by integral spacers 47.
  • TWO ⁇ bolts 41 of cruciform section pass through a number of oil cooling rings 42 and are secured to the ring 38.
  • the shaft carries a fan 44 for drawing in air through the gaps between the spacers 39 and delivering it out between the oil cooling rings 42.
  • the fan is driven by a coupling 45 which is connected to the shaft of a motor.
  • the motor is bolted to a ring 40 which is bolted to the ring 46 of the latern.
  • This valve is subject to the pressure in the bottom part of the sump, and hence to the delivery pressure, and when this pressure rises the valve admits the pressure to the unloading valve and causes the latter to close against the action of its spring so as to restrict or cut olf the intake of air to the compressor.
  • the unloader valve leads to an inlet port 59 opening through the intake end cover into the crescent shaped space 60 between the cylinder 19 and the rotor 24, which is, of course, divided into separate working chambers by the vanes 25.
  • each working space is reduced in volume to compress the air in it as the working space is rotated towards a series of delivery ports 61.
  • There are four such delivery ports extending in a line along the whole length of the cylinder.
  • the lower half of the roughly annular space between the stator and the lower tunnel in the main casting forms a sump which is filled with oil to about the level of the axis.
  • the delivery pressure which may for example be of the order 100 pounds per square inch.
  • the oil is admitted to the working chambers of the compressor at a point where the oil is partially compressed, for example to a pressure of 30 pounds per square inch, and this difference of pressure maintains a circulation of the oil through the oil cooler and the remainder of the lubricating cooling and sealing system.
  • the radial passage 78 also communicates with a longitudinal gallery 79 from which a number of small radial passages 80 open into the working chamber at a point at which, as already referred to, the pressure might be about 30 pounds per square inch.
  • the gallery 79 communicates with a radial passage 81 leading to the inlet end bearing 27 to lubricate it.
  • the cylindrical detiector tube 21 has a portion immediately opposite the delivery ports so that the mixture of air and oil strikes against it and deposits a substantial portion of the oil on its inner surface.
  • this oil is not obliged to travel along with the air to one end of a delivery gallery but can immediately trickle down in a circumferential direction on the inside of the dellector tube.
  • the tube is in the form of a strip of metal bent round to the form of a cylinder with a gap between its ends and held in place on a tubular ange 22 by a jubilee clip 23.
  • the deflector tube has a longitudinal slot at the bottom extending throughout its length through which oil can pass. This however is unimportant since it will be realised that the whole of the space both inside and outside the tube below the level of the axis is occupied by a pool of oil.
  • an oil release valve 96 consisting of a plate pressed by a spring onto a number of small holes, cornmunicates with a working chamber of the pump so that if the pressure in the working chamber, due to an excess of oil in it, exceeds the delivery pressure the valve can open and relieve it.
  • a safety valve 97 in the upper part of the sump is provided to allow any excess pressure to escape.
  • a vacuum relief valve 98 communicates with the air intake so as to restrict the vacuum that can be produced when the off-loading valve closes in order to avoid the noise known as vacuum scream.
  • the layout described is of relatively simple basic construction accommodated in a main casting with two parallel tunnels, the parts likely to require access being accessible from the intake end.
  • the unloader valve 57 is accessible to the intake end by removing the inner and outer caps 51 and 32 and the paper lter.
  • the minimum pressure valve is accessible in the intake end upper cover.
  • the servo device 58 extends in a transverse horizontal direction across the lower part of the intake end of the main casting where it is also readily accessible.
  • the complete final oil separator 13 can be removed by merely taking otl the intake end upper cover 15 and undoing the nut 88.
  • a compressor of the eccentric vane type including a housing, a stator mounted in said housing in such a manner as to define a chamber surrounding it, a cylinder in said stator, a rotor having a number of sliding vanes mounted to rotate about an eccentric axis in said cylinder so as to afford a crescent-shaped space divided by the vanes into a number of working chambers, means forming an oil sump surrounding the lower part of said stator, means for delivering oil from the sump into the air before it leaves the working chambers, a number of delivery ports distributed along the length of the stator through which oil-laden air is delivered, a part-cylindrical shield dividing the chamber about the stator into inner and outer compartments which communicate with one another at the bottom through a gap in the shield and together form the oil sump, while at the top they communicate with one another only at a first end, while the outer compartment has an outlet at the opposite, or second, end, the shield being so located that the oil-laden compressed air delivered through the stator ports imp
  • a compressor as claimed in claim 2 in which the upper tunnel is closed by a cover incorporating a minimum pressure valve through which the compressed air is delivered and which closes if the delivery pressure falls below a given pressure to prevent further fall of pressure.
  • a compressor as claimed in claim 2 in which the lower tunnel at its inlet end has a cover removable to give access to an off-loading valve closing the inlet when the delivery pressure exceeds a predetermined value.
  • a compressor as claimed in claim 5 in which the olf-loading valve is controlled by a servo valve situated in a transverse horizontal bore in the bottom of the casting at its inlet end and responding to oil pressure to admit such pressure to a piston surface of the off-loading valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
US58764A 1969-07-29 1970-07-28 Compressors Expired - Lifetime US3669579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3800069 1969-07-29

Publications (1)

Publication Number Publication Date
US3669579A true US3669579A (en) 1972-06-13

Family

ID=10400507

Family Applications (1)

Application Number Title Priority Date Filing Date
US58764A Expired - Lifetime US3669579A (en) 1969-07-29 1970-07-28 Compressors

Country Status (6)

Country Link
US (1) US3669579A (es)
JP (1) JPS4930169B1 (es)
DE (1) DE2037727A1 (es)
ES (1) ES382243A1 (es)
FR (1) FR2053251B1 (es)
GB (1) GB1318884A (es)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420293A (en) * 1979-09-24 1983-12-13 Isartaler Schraubenkompressoren Gmbh Liquid cooled compressor with improved liquid separation
US4648815A (en) * 1984-09-05 1987-03-10 The Hydrovane Compressor Company Limited Rotary air compressor with thermally responsive oil injection
US4799869A (en) * 1986-03-10 1989-01-24 Corint S.R.L. Pneumatic vane pumps with oil separation
US5009576A (en) * 1990-01-08 1991-04-23 Ingersoll-Rand Company Compressor unloader controller
US5263832A (en) * 1991-07-05 1993-11-23 Kabushiki Kaisha Kobe Seiko Sho Air-cooled oil-free screw compressor
US20080193491A1 (en) * 2004-07-07 2008-08-14 Albert Missbichler Diaminooxidase-Containing Pharmaceutical Compositions
US20100018386A1 (en) * 2006-03-29 2010-01-28 Kabushiki Kaisha Toyota Jidoshokki Compressor
US20120027631A1 (en) * 2009-03-30 2012-02-02 British Telecommunications Public Limited Company Air compressor
CN105673485A (zh) * 2016-01-15 2016-06-15 沈阳天朗艾尔压缩机有限公司 一种滑片式空气压缩机
US20190257310A1 (en) * 2016-07-08 2019-08-22 Gebr. Becker Gmbh Oil-lubricated rotary vane vacuum pump
US10697298B2 (en) 2015-05-18 2020-06-30 Gebr. Becker Gmbh Oil-lubricated slide vane rotary vacuum pump with oil separating and reconditioning device

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2012626B (en) * 1977-12-29 1982-04-15 Seiko Instr & Electronics Oil separator
DE3022277A1 (de) * 1980-06-13 1981-12-24 Isartaler Schraubenkompressoren GmbH, 8192 Geretsried Verdichter mit oeleinspritzung, insbesondere schraubenverdichter
JPS5757507A (en) * 1980-08-06 1982-04-06 Fujiko Murata Foldable umbrella
IT1205440B (it) * 1981-04-01 1989-03-23 Armando Giovannini Compressore d'aria rotativo a palette perfezionato
DE3149245A1 (de) * 1981-12-11 1983-06-16 Isartaler Schraubenkompressoren GmbH, 8192 Geretsried "verdichteranlage"
US4441871A (en) * 1981-12-18 1984-04-10 Hydrovane Compressor Company Limited Rotary compressors with primary and secondary oil separation means
GB2119443A (en) * 1982-04-24 1983-11-16 Gen Eng Radcliffe 1979 An oil sealed pump
JPH0345715U (es) * 1989-09-12 1991-04-26
DE4135442C1 (es) * 1991-10-23 1993-04-01 Mannesmann Ag, 4000 Duesseldorf, De
GB9716003D0 (en) 1997-07-29 1997-10-01 Compair Hydrovane Limited Air compression of sliding vane eccentric rotor type
DE102006039958A1 (de) * 2006-08-25 2008-02-28 Busch Produktions Gmbh Drehschieber-Vakuumpumpe bzw.-Verdichter in Blockbauweise mit fliegend gelagertem Scheibenläufer-Synchronmotor
IT201700086572A1 (it) * 2017-07-27 2019-01-27 Ing Enea Mattei S P A Compressore a palette con un sistema di lubrificazione perfezionato

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420293A (en) * 1979-09-24 1983-12-13 Isartaler Schraubenkompressoren Gmbh Liquid cooled compressor with improved liquid separation
US4648815A (en) * 1984-09-05 1987-03-10 The Hydrovane Compressor Company Limited Rotary air compressor with thermally responsive oil injection
US4799869A (en) * 1986-03-10 1989-01-24 Corint S.R.L. Pneumatic vane pumps with oil separation
US5009576A (en) * 1990-01-08 1991-04-23 Ingersoll-Rand Company Compressor unloader controller
US5263832A (en) * 1991-07-05 1993-11-23 Kabushiki Kaisha Kobe Seiko Sho Air-cooled oil-free screw compressor
US20080193491A1 (en) * 2004-07-07 2008-08-14 Albert Missbichler Diaminooxidase-Containing Pharmaceutical Compositions
US20100018386A1 (en) * 2006-03-29 2010-01-28 Kabushiki Kaisha Toyota Jidoshokki Compressor
US8991296B2 (en) * 2006-03-29 2015-03-31 Kabushiki Kaisha Toyota Jidoshokki Compressor
US20120027631A1 (en) * 2009-03-30 2012-02-02 British Telecommunications Public Limited Company Air compressor
US9611842B2 (en) * 2009-03-30 2017-04-04 British Telecommunications Public Limited Company Air compressor
US10697298B2 (en) 2015-05-18 2020-06-30 Gebr. Becker Gmbh Oil-lubricated slide vane rotary vacuum pump with oil separating and reconditioning device
CN105673485A (zh) * 2016-01-15 2016-06-15 沈阳天朗艾尔压缩机有限公司 一种滑片式空气压缩机
CN105673485B (zh) * 2016-01-15 2017-09-19 沈阳天朗艾尔压缩机有限公司 一种滑片式空气压缩机
US20190257310A1 (en) * 2016-07-08 2019-08-22 Gebr. Becker Gmbh Oil-lubricated rotary vane vacuum pump

Also Published As

Publication number Publication date
ES382243A1 (es) 1972-11-16
GB1318884A (en) 1973-05-31
DE2037727A1 (de) 1971-02-04
FR2053251A1 (es) 1971-04-16
JPS4930169B1 (es) 1974-08-10
FR2053251B1 (es) 1973-03-16

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