US3768236A - Compressors - Google Patents

Compressors Download PDF

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Publication number
US3768236A
US3768236A US00101087A US3768236DA US3768236A US 3768236 A US3768236 A US 3768236A US 00101087 A US00101087 A US 00101087A US 3768236D A US3768236D A US 3768236DA US 3768236 A US3768236 A US 3768236A
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US
United States
Prior art keywords
separation chamber
cylinder
air
compressor
primary separation
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
US00101087A
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English (en)
Inventor
P Rudge
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 US3768236A publication Critical patent/US3768236A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • 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

  • ABSTRACT In a compressor of eccentric vane type having means for separating oil from compressedjair, the oil-laden air from the cylinder enters the centre of a primary separation chamber and flows in two streams towards opposite ends, spreading out and following a sinuous path.
  • This invention relates to compressors of eccentric vane type and in particular to means for separating oil from compressed air.
  • 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, in which the crescent shaped space is divided by the vanes into a number of working chambers, and has means for delivering oil into the working chamber, and/or the air inlet thereto, from a sump surrounding the lower part of the stator, characterised in that the stator is connected to the centre of a primary separation chamber, which surrounds the upper part of the stator, and .in which the air/oil mixture, flowing from the stator, flows in two streams towards opposite ends of the primary separation chamber. As the air/oil mixture flows through the primary separation chamber it may be caused to spread out in order to reach ports which communicate with a final oil separator.
  • the present invention provides for more effective separation as it splits the flow, from the stator as it enters the primary separation chamber, into two streams and preferably causes each stream to spread out thereby reducing velocity, and causes the air/oil mixture to follow a longer labyrinthine path. Further divisions ofthe flow may be obtained by increasing the number of ports, and/or repositioning the ports, by which the primary separation chamber communicates with the final oil separator.
  • the final separator is arranged so that the two streams of air flow in it towards a central outlet.
  • FIG. 1 is a longitudinal sectional elevation of a compressor incorporating an oilseparator in accordance with the invention.
  • FIG. 2 is a sectional end view of the compressor shown in FIG. 1.
  • the compressor may be substantially as described in British Patent Specification No. 1 134224 or British Patent Specification No. 38000/69, both commonly owned herewith.
  • the compressor consists of a casing the lower part of which has in it a cylinder 11, in a stator, in which a shaft 12 rotates about an axis which is eccentric to that of the cylinder 1 1.
  • the shaft carries a rotor 14 having in it a number of axial grooves which receive sliding vanes 15 whereof the outer edges engage the surface of the cylinder 11.
  • Air is drawn in through inlet ports 19 from inlet manifolds 18 extending along the bottom of the stator 17 and after being compressed in the crescent-shaped working space between the rotor 14 and the cylinder 11 is delivered through delivery ports (26) into a delivery manifold 24 extending above the top of the cylinder 11 in the upper part of the stator 17.
  • stator 17 Along a line parallel to the axis through the port 22 additional flanges 23 are provided on the stator 17 abutting those in the primary separation chamber but only of short circumferential extent to cause the air to spread out circumferentially and prevent it from flowing in a straight line as viewed in plan.
  • the two streams flow towards a central delivery connection 50 from the complete compressor, which opens from the centre of the final separation chamber 37.
  • the intermediate parts of the chamber 37 contain a series of thick felt discs or pads 38 made from compressed wool felt or other suitable material completely filling the crosssection of the chamber 37 and alternating with baffles 39 throughout the major part of its length.
  • the pads become saturated with oil separated from the air- ./oil mixture and the oil trickles from the downstream faces of the pads and forms pools in a number of wells 40 distributed along the length of the chamber 37.
  • Adjacent to this rising passage 41 is a further passage (not shown) leading down to a cavity 46 beneath the casing of the separator 37 from where the separated oil is drained back to the intake of the compressor.
  • a cap 47 covers both passages and connects them together.
  • a compressor of eccentric vane type including a stator having in it a cylinder, a part annular sump surrounding the lower portion of the cylinder and a part annular primary separation chamber surrounding the upper portion of the cylinder, a rotor mounted eccentrically in the cylinder and having a number of sliding vanes dividing the crescent shaped space between the rotor and cylinder into a number of working chambers, means for delivering oil into air flowing through the compressor, means defining a final separation chamber extending parallel to and adjacent the primary separation chamber, straining means in the final separation chamber, and conduit means for directing oil-laden compressed air from the working chambers to the center of the primary separation chamber to flow in two streams therein toward opposite ends thereof, means in the primary separation chamber causing substantial separation of the oil from the air for each of the two streams, ports connecting the ends of the primary separation chamber respectively to the ends of the final separation chamber for the passage of said two streams into the latter, wherein they can flow toward the center thereof through the straining means, and means defining an outlet for the air from
  • a compressor as claimed in claim 1, in which said means in the primary separation chamber causing substantial separation include circumferential inwardly projecting, spaced flanges, in planes at right angles to the axis of the cylinder, the inwardly projecting dimensions of the flanges being such that the air/oil misture passes between the stator and the extreme points of the flanges.
  • stator has circumferential outwardly projecting flanges in planes at right angles to the axis of the cylinder, located between the inwardly projecting flanges of the primary separation chamber thereby causing the air/oil mixture to flow in a labyrinthine path.
  • stator has additional outwardly projecting flanges in planes at right angles to the axis of the cylinder and of short circumferential extent to cause each stream to spread out thereby reducing velocity, and thereby causing the air/oil mixture to follow a longer labyrinthine path.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
US00101087A 1969-12-24 1970-12-23 Compressors Expired - Lifetime US3768236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6279569 1969-12-24

Publications (1)

Publication Number Publication Date
US3768236A true US3768236A (en) 1973-10-30

Family

ID=10488501

Family Applications (1)

Application Number Title Priority Date Filing Date
US00101087A Expired - Lifetime US3768236A (en) 1969-12-24 1970-12-23 Compressors

Country Status (3)

Country Link
US (1) US3768236A (enrdf_load_stackoverflow)
JP (1) JPS5031964B1 (enrdf_load_stackoverflow)
GB (1) GB1334847A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036031A1 (de) * 1980-03-18 1981-09-23 Girmes-Werke AG Verfahren zum Abscheiden von Öl oder ölartigen Substanzen aus Gasen wie Luft
US4627861A (en) * 1981-03-06 1986-12-09 Hitachi, Ltd. Oil separator
US4648815A (en) * 1984-09-05 1987-03-10 The Hydrovane Compressor Company Limited Rotary air compressor with thermally responsive oil injection
US4761166A (en) * 1986-01-21 1988-08-02 Cash Engineering Research Pty. Ltd. Compressor system
US5114446A (en) * 1991-02-15 1992-05-19 United Technologies Corporation Deoiler for jet engine
WO2004033916A1 (en) * 2002-10-10 2004-04-22 Compair Uk Limited Rotary compressor
US9856866B2 (en) 2011-01-28 2018-01-02 Wabtec Holding Corp. Oil-free air compressor for rail vehicles

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51889U (enrdf_load_stackoverflow) * 1974-06-19 1976-01-06
GB2119443A (en) * 1982-04-24 1983-11-16 Gen Eng Radcliffe 1979 An oil sealed pump
IT1202460B (it) * 1987-02-02 1989-02-09 Enea Mattei Spa Ing Compressore d'aria rotativo
JPS63141538U (enrdf_load_stackoverflow) * 1987-03-09 1988-09-19
GB2227057B (en) * 1988-12-22 1993-01-13 Multiphase Systems Plc Improvements in pumps

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US738101A (en) * 1903-03-09 1903-09-01 Glynn B Stannard Rotary force-pump.
GB1134224A (en) * 1965-05-03 1968-11-20 Hymatic Eng Co Ltd Improvements relating to compressors
US3451198A (en) * 1966-10-11 1969-06-24 Stal Refrigeration Ab Means for separating a liquid,such as oil,from a compressed gas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US738101A (en) * 1903-03-09 1903-09-01 Glynn B Stannard Rotary force-pump.
GB1134224A (en) * 1965-05-03 1968-11-20 Hymatic Eng Co Ltd Improvements relating to compressors
US3451198A (en) * 1966-10-11 1969-06-24 Stal Refrigeration Ab Means for separating a liquid,such as oil,from a compressed gas

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036031A1 (de) * 1980-03-18 1981-09-23 Girmes-Werke AG Verfahren zum Abscheiden von Öl oder ölartigen Substanzen aus Gasen wie Luft
US4627861A (en) * 1981-03-06 1986-12-09 Hitachi, Ltd. Oil separator
US4648815A (en) * 1984-09-05 1987-03-10 The Hydrovane Compressor Company Limited Rotary air compressor with thermally responsive oil injection
US4761166A (en) * 1986-01-21 1988-08-02 Cash Engineering Research Pty. Ltd. Compressor system
US5114446A (en) * 1991-02-15 1992-05-19 United Technologies Corporation Deoiler for jet engine
WO2004033916A1 (en) * 2002-10-10 2004-04-22 Compair Uk Limited Rotary compressor
US9856866B2 (en) 2011-01-28 2018-01-02 Wabtec Holding Corp. Oil-free air compressor for rail vehicles

Also Published As

Publication number Publication date
GB1334847A (en) 1973-10-24
JPS5031964B1 (enrdf_load_stackoverflow) 1975-10-16

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