EP0538973B1 - Luftgekühlte Verdichteranlage - Google Patents

Luftgekühlte Verdichteranlage Download PDF

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Publication number
EP0538973B1
EP0538973B1 EP92250305A EP92250305A EP0538973B1 EP 0538973 B1 EP0538973 B1 EP 0538973B1 EP 92250305 A EP92250305 A EP 92250305A EP 92250305 A EP92250305 A EP 92250305A EP 0538973 B1 EP0538973 B1 EP 0538973B1
Authority
EP
European Patent Office
Prior art keywords
air
oil
chamber
pressure
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 - Lifetime
Application number
EP92250305A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0538973A1 (de
Inventor
Manfred Schnell
Jürgen Kaltenbach
Rudi Schneider
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0538973A1 publication Critical patent/EP0538973A1/de
Application granted granted Critical
Publication of EP0538973B1 publication Critical patent/EP0538973B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps 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
    • 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
    • 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
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning

Definitions

  • the invention relates to an air-cooled compressor system for generating compressed air with an injection-cooled compressor driven by a motor, an oil separator tank designed as a multifunctional housing, an air intake filter and an oil fine separator, in which the compressor is designed as a separate part that can be flange-mounted on the outside of the oil separator tank and in which Flange area openings are provided for the suction of air and for the discharge of the compressed air into the oil separating tank, the oil separating tank having a suction chamber arranged inside the housing by a partition and a pressure chamber, the latter being designed as a pre-separator and forming the oil sump in the lower area .
  • Such a compressor system is known from EP-A-0 063 656.
  • a similarly designed compressor system can be found in EP-PS 0 206 153. It has an oil separator tank to which a screw compressor is flanged on the outside as a separate part and openings are provided in the flange area for the suction of air and for the discharge of the compressed air into the oil separator tank.
  • the housing of the oil separator tank which is open at the top, is sealed with a lid.
  • the cover is designed so that it acts as a cyclone separator in the sense of an oil pre-separation.
  • the pre-de-oiled air then flows radially from the outside inwards through an oil separator, which is arranged in the upper part of the oil separator tank as a replaceable insert.
  • the separated oil collects in the lower part of the oil separator tank, from where it is fed to the injection point of the screw compressor after cooling and filtering.
  • the oil is cooled by an oil cooler, which is cooled by
  • the object of the invention is to provide an air-cooled compressor system for generating compressed air in the low pressure range between 1 and 4 bar, which while maintaining the compact design has a high efficiency and the compression closer to the isotherms and with a low residual oil content with a maximum final air temperature of 100 Degrees Celsius can be produced inexpensively with fewer components.
  • oil is injected into the multi-cell compressor stage in larger quantities, ie 10 - 20 g per cubic meter of intake air.
  • This improves hydrodynamic lubrication and increases volumetric efficiency.
  • the oil supply takes place in a known manner via the system pressure, so that the otherwise customary oil pump can be dispensed with.
  • it is necessary to determine the degree of pre-de-oiling so that the downstream fine separator is not overused.
  • a suction and a pressure chamber are arranged separated by an intermediate wall, the latter being designed as a pre-separator and forming the oil sump in the lower region. It is important that the opening in the pressure chamber for the discharge of the compressed air is arranged so that the oil-containing air, as guided in a duct, first strikes a wall perpendicular to the direction of flow and then the direction of flow is greatly slowed down by the passage of the oil-containing Air into the pressure chamber with a large cross-sectional area.
  • the oil droplets Due to the calming of the air flow, the oil droplets have enough time to separate from the mixture so that only small amounts of oil are entrained in the downstream oil separator, where the remaining oil, with the exception of a residual oil content of less than 5 ppm, preferably less than 3 ppm, is separated out via appropriate filter elements becomes.
  • the oil collecting in the oil sump of the oil separator tank is pressed by means of the system pressure via a line into the oil cooler, which is air-cooled by a fan, and from there via an injection line into the multi-cell compressor stage.
  • the injection into the compressor takes place via at least one injection hole, which is arranged in the direction of rotation with respect to the cell pressure in such a way that a sufficient system pressure between the pressure port and the injection point is maintained for pumping the oil, taking into account the pressure losses. It has proven to be particularly advantageous if two injection bores are provided for the injection, which are preferably arranged in the respective cover area of the compressor. Experiments have shown that the achievable volumetric efficiency is the highest in such an arrangement. The amount of oil injected is only about that appropriate line and bore cross-sections controlled, without a complex control is required.
  • the oil separator tank is designed as a gravity separator, which means that the air / oil mixture rises from the lower area of the pressure chamber.
  • the fine oil separator and the air intake filter are attached to the flange-like surface of the oil separator tank that is parallel to the housing feet. These are connected to the pressure or suction chamber via openings in the flange-like surface.
  • the fine oil separator is sealed by a hood attached to the flange-like surface.
  • the pre-oiled mixture flows from the pressure chamber of the oil separator tank through the opening in the flange-like surface into the oil separator and penetrates the filter elements radially from the inside to the outside.
  • the oil draining from the filter elements is collected in an annular groove which is arranged centrally in the flange-like surface of the opening connecting the pressure chamber to the oil fine separator. Via a throttle bore arranged in the annular groove, which opens into the suction chamber, the separated residual oil can be fed back to the vane machine without the need for an expensive return line to be installed.
  • the hood also has a second chamber separated from the first by an intermediate wall, which encloses the air intake filter but leaves a circumferential gap open for the air intake.
  • the pre-oiled air in the pre-separator 14 is fed to the fine separator 6 via a channel 9.
  • the exhaust air is further deoiled to a residual oil content in the range of less than 3 to 5 ppm.
  • the compressed, de-oiled air is supplied to the consumer point, not shown here.
  • FIGS. 2 and 3 A practical embodiment of the compressor system according to the invention is shown in a plan view and in a longitudinal section in FIGS. 2 and 3.
  • the compact design of the system with closely lined up system parts is clearly visible.
  • the centerpiece of the system is the oil separator tank 17, which is designed as a multifunctional housing.
  • the compressor 1 is flanged to the right side of the housing 17 and the electric motor 3 including the oil cooler 8, fan wheel 15 and radiator hood 18 is flanged to the left.
  • the oil cooler 8 is designed in the form of a heat exchanger wound on the rear housing part of the electric motor 3.
  • the fan wheel 15 enclosed by the radiator hood 18 is driven by the electric motor 3 and the air flow generated thereby cools both the coil of the oil cooler 8 and the electric motor 3.
  • connection of the electric motor 3 to the compressor 1 takes place via a Coupling 10 arranged in the housing of the oil separating container 17, which connects the journal of the output shaft 19 of the electric motor 3 to the journal of the rotor shaft 20 of the compressor 1.
  • the outlet side 21 of the compressor 1 is connected to the pressure chamber 23 of the oil separating container 17 via an opening 22 in the flange region.
  • the baffle 24 in the housing of the oil separator 17, onto which the compressed air-oil mixture flows first, can be clearly seen in FIG.
  • a hood 27 is fastened, which encloses the air intake filter 4 and the fine oil separator 6.
  • FIGS. 4 and 5 Further details of the proposed construction can be seen in FIGS. 4 and 5, FIG. 4 being a section along the line BB and FIG. 5 being a section along the line CC in FIG. 3.
  • the hood 27 enclosing the fine oil separator 6 and the air intake filter 4 is divided into two chambers 31, 32 by an intermediate wall 30.
  • the oil fine separator 6 is arranged in a sealed manner in the left chamber 31 and the air intake filter 4 in the right chamber 32.
  • the sealing with respect to the pressure chamber 23 takes place by means of an O-ring 34.
  • the pre-oiled mixture rising from the pressure chamber 23 passes through the flange-like surface 26 made opening 35 in the fine separator 6 and flows through the filter elements 36 radially from the inside to the outside.
  • the oil running out in the filter elements 36 collects in an annular groove 37 arranged in the surface 26, which is connected to the suction chamber 39 via a throttle bore 38.
  • the air sucked in via the air intake filter 4 passes through the non-return flap 5 in the opening 50 into the suction chamber 39 and from there via the opening 40 arranged in the flange area into the intake duct 41 of the compressor 1.
  • After sweeping over the edge "inlet closes" the in Air enclosed in the cell compresses and the oil is injected in the region of the first closed cell 42 via a chamber 43. After compression, the air-oil mixture is pushed out via the outlet channel 44 and reaches the pressure chamber 23 of the oil separating container 17 via the opening 22.
  • the housing of the oil separator 17 is divided into the suction 39 and pressure chamber 23 already mentioned via an intermediate wall 46.
  • this partition 46 merges into a funnel-shaped housing element 47.
  • This housing element 47 extends from the flange area of the compressor 1 to the flange area of the electric motor 3 across the oil separator container 17.
  • the housing element 17 is reinforced and closed for receiving the bearing 33 of the rotor shaft 20 of the compressor 1.
  • the coupling 10 and the pin of the output shaft 19 of the electric motor 3 and the pin of the rotor shaft 20 of the compressor 1 are arranged in the cavity of the funnel-shaped housing element 47.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP92250305A 1991-10-23 1992-10-19 Luftgekühlte Verdichteranlage Expired - Lifetime EP0538973B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135442 1991-10-23
DE4135442A DE4135442C1 (ja) 1991-10-23 1991-10-23

Publications (2)

Publication Number Publication Date
EP0538973A1 EP0538973A1 (de) 1993-04-28
EP0538973B1 true EP0538973B1 (de) 1995-09-06

Family

ID=6443543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92250305A Expired - Lifetime EP0538973B1 (de) 1991-10-23 1992-10-19 Luftgekühlte Verdichteranlage

Country Status (2)

Country Link
EP (1) EP0538973B1 (ja)
DE (2) DE4135442C1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108291548A (zh) * 2015-12-01 2018-07-17 阿特利耶博世股份有限公司 具有过滤元件的真空泵

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19752167A1 (de) * 1997-02-24 1999-05-06 Maid Ludwig Riemenspann-Vorrichtung für eine Verdichteranlage
DE19711117C1 (de) * 1997-03-05 1998-09-03 Mannesmann Ag Anlage zum Verdichten eines gasförmigen Mediums oder zur Erzeugung eines Vakuum
JP4040225B2 (ja) 1999-02-01 2008-01-30 カルソニックコンプレッサー株式会社 気体圧縮機
DE19942265A1 (de) * 1999-09-04 2001-03-08 Alup Kompressoren Gmbh Verdichteranlage und Verfahren zur Verdichtung eines Gases
GB2394011A (en) * 2002-10-10 2004-04-14 Compair Uk Ltd Oil sealed rotary vane compressor
GB0905453D0 (en) * 2009-03-30 2009-05-13 British Telecomm Air compressor
DE102011014961A1 (de) * 2011-03-24 2012-09-27 Rotorcomp Verdichter Gmbh Schraubenverdichteranlage
BE1020312A3 (nl) 2012-02-28 2013-07-02 Atlas Copco Airpower Nv Compressorinrichting, evenals gebruik van zulke opstelling.
US11015602B2 (en) 2012-02-28 2021-05-25 Atlas Copco Airpower, Naamloze Vennootschap Screw compressor
BE1020311A3 (nl) 2012-02-28 2013-07-02 Atlas Copco Airpower Nv Schroefcompressor.
DE102016100963A1 (de) * 2016-01-21 2017-07-27 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Luftversorgungsanlage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1318884A (en) * 1969-07-29 1973-05-31 Hydrovane Compressor Rotary compressors
GB2020362A (en) * 1978-03-13 1979-11-14 Imi Fluidair Ltd Rotary compressor
US4260402A (en) * 1979-05-17 1981-04-07 Ingersoll-Rand Company Housing means for defining air/oil separator and oil reservoir assembly
DD203599C2 (de) * 1982-03-03 1988-01-27 Komb Pumpen Und Verdichter Wis Luftverdichteraggregat mit oelabscheidung
DE3517493A1 (de) * 1985-05-15 1986-11-20 Mahle Gmbh, 7000 Stuttgart In einem kompakten gehaeuse angeordnete schraubenverdichter-anlage
DE3521977A1 (de) * 1985-06-20 1987-01-02 Mahle Gmbh Kompakte luftverdichteranlage, insbesondere mit einem schraubenrotorenverdichter
IT1234766B (it) * 1989-08-10 1992-05-26 Galileo Vacuum Tec Spa Sistema di smontaggio rapido per pompe rotative da vuoto

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108291548A (zh) * 2015-12-01 2018-07-17 阿特利耶博世股份有限公司 具有过滤元件的真空泵
CN108291548B (zh) * 2015-12-01 2020-08-07 阿特利耶博世股份有限公司 具有过滤元件的真空泵
TWI708015B (zh) * 2015-12-01 2020-10-21 瑞士商亞特里爾斯布契股份有限公司 用於真空泵的過濾元件及關聯的安裝裝置
TWI764271B (zh) * 2015-12-01 2022-05-11 瑞士商亞特里爾斯布契股份有限公司 用於真空泵的過濾元件及關聯的安裝裝置

Also Published As

Publication number Publication date
DE59203565D1 (de) 1995-10-12
EP0538973A1 (de) 1993-04-28
DE4135442C1 (ja) 1993-04-01

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