EP0030275A1 - Compresseur, en particulier compresseur à vis avec circuit de lubrification - Google Patents

Compresseur, en particulier compresseur à vis avec circuit de lubrification Download PDF

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Publication number
EP0030275A1
EP0030275A1 EP80106830A EP80106830A EP0030275A1 EP 0030275 A1 EP0030275 A1 EP 0030275A1 EP 80106830 A EP80106830 A EP 80106830A EP 80106830 A EP80106830 A EP 80106830A EP 0030275 A1 EP0030275 A1 EP 0030275A1
Authority
EP
European Patent Office
Prior art keywords
compressor
lubricant
circuit
sealant
coolant
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.)
Withdrawn
Application number
EP80106830A
Other languages
German (de)
English (en)
Inventor
Karl Prof. Dr.-Ing. Bammert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0030275A1 publication Critical patent/EP0030275A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a compressor, in particular a screw compressor, with two rotors which are in meshing engagement with one another in the working space of a housing by means of suction and pressure-side bearings, and a lubricant circuit for lubricating the bearings, the one reservoir, the lubricant lines leading from this to the bearings Has associated lubricant collection rooms and return lines leading from them to the storage container, and with a coolant and sealant circuit which has a supply pressure container for the coolant and sealant under the compressor discharge pressure, feed lines leading from here to the working space of the compressor and a separator connected to the compressor discharge line for the has coolant and sealant carried by the gas flow.
  • Such compressors with the supply of a cooling, sealing and also lubricating liquid to the work space and to the rotors have the advantage over so-called dry-running compressors that higher pressures can be achieved and that costly toothed gears can be dispensed with in order to achieve contact-free synchronization of the rotors.
  • Two different alternative possibilities are known from GB-PS 846 390 for the lubricant or coolant and sealant circuit for such compressors.
  • a major disadvantage of such a construction with a common lubricant, coolant and sealant circuit becomes apparent when the compressor is to be used to compress gases which tend to dissolve in the medium acting as a lubricant, coolant and sealant -and impair its lubricity.
  • An example of such applications is the compression of refrigerants, such as. B. difluoromonochloromethane, trade name Frigen 22 or Freon 22 or other halogenated hydrocarbons, especially if these are to be compressed in one stage to final pressures of 20 or 25 bar. From solution diagrams it follows that the proportion of refrigerant dissolved in the oil can be up to 30%, and that as a result the viscosity of the oil is so strong, e.g. B. to 3.5 qmm / sec. can be reduced so that the oil can no longer fulfill its function as a lubricant for bearing lubrication.
  • the invention has for its object to improve a compressor of the type mentioned in such a way that no or only very simple, cheap and space-saving seals between the bearings and the work space are required and still avoid impairment of the bearing lubrication caused by gas dissolved in the lubricant becomes.
  • This object is achieved in that the reservoir of the lubricant circuit is closed and its gas space is connected to the intake line of the compressor by a compensating line.
  • the lubricant circuit and the coolant and sealant circuit contain the same medium as lubricant, coolant and sealant and are connected to one another by a controllable connecting valve.
  • This valve can preferably be controlled by a level sensor in the reservoir of the lubricant circuit.
  • a connecting line with a controllable valve is preferably provided between a lubricant line and the suction side of the compressor, which is also provided by the Level sensor in the lubricant reservoir is controllable.
  • the drawing shows a longitudinal section through a screw compressor and the flow diagram of the associated lubricant, coolant and sealant circuit.
  • the compressor has a housing 10, in the working space 12 of which two rotors 14 are mounted next to one another, which engage in one another with helically arranged ribs and grooves. Only one of these rotors 14 is visible in the drawing.
  • the shaft 16 of the rotor is supported at both ends by means of radial sliding bearings 18 and also at the end on the pressure side by means of an axial roller bearing 20.
  • the shaft of one rotor, the main rotor is driven by a drive (not shown), and the main rotor drives the secondary rotor through the meshing engagement.
  • the gas to be compressed in particular a refrigerant such as difluoromonochloromethane, which in this case is under the evaporator pressure, is sucked in via the suction line 22 and the suction nozzle 24, compressed in the working space 12 by the rotors 14 and via the pressure nozzle 26 and the pressure line 28 as
  • the separator and storage container serving pressure container 30 is supplied, from where it passes through the separating filter 32 and the pipeline 34 to the consumer and, in the case of refrigerants, to the condenser.
  • oil or another liquid suitable as a coolant, sealant and lubricant which is fed to the working space 12 by means of the line 36 via a cooler 38, a throttle element 40 and the housing bore 42 in order to close the rotors cool, seal against each other and against the housing and mesh with them to lubricate the flanks.
  • This oil is discharged together with the compressed gas stream via the pressure port 26 and the pressure line 28 and separated from the gas stream in the container 30 and returned to the sump 44.
  • oil is removed from a closed reservoir 46 via a pump 48 and a cooler 50 and fed to the lubricant bores of the bearings 18 via the line 52 and the housing channels 54, 56. From these lubricant bores, the oil enters the bearing gap 1 in both axial directions. A part of the oil passes directly from the bearing gap into the oil collecting spaces 56, 58, which are connected to one another by a longitudinal channel 60 in the housing 10.
  • the portion of the oil which occurs in the direction of the working space passes from the respective bearing 18 into an oil collecting groove 62 which is arranged as an intermediate space between each bearing 18 and a sealing element 64 and is connected to the associated oil collecting space 56 or 58 by a channel 66 in each case .
  • the oil collecting space 56 is connected to the reservoir 46 via an outlet channel 68.
  • the gas space of the storage container 46 is also connected to the suction line 22 via a compensating line 70.
  • the oil collecting groove 62 which is under low pressure, is arranged between each bearing 18 and the working space 12 and effectively causes a leakage of oil from the bearing 18 to the working space 12 or vice versa, a leakage of gas from the working space 12 to the bearing 18 largely prevented.
  • the additional sealing elements 64 are therefore not subject to particularly high requirements; they can be simple and very short elements elements such as B. act short labyrinths or swim rings. These can also be supplied with oil through corresponding housing bores, as shown at 72 for the pressure-side sealing element.
  • the oil therein can only contain relatively small amounts of a soluble gas, e.g. B. refrigerant, dissolved.
  • a soluble gas e.g. B. refrigerant
  • the corresponding proportion in the reservoir 46 at a pressure of z. B. 5 bar and a temperature of 70 ° C significantly less than 5%, which practically does not affect the viscosity of the oil.
  • a level switch 74 with lower and upper limit contact controls on the one hand a solenoid valve 76, which connects the line 36 to the reservoir 46, and also a solenoid valve 78, which connects the line 52 to the suction line 22 of the compressor.
  • the solenoid valve 76 is opened and oil can reach the container 46 from the pressure container 30.
  • valve 78 opens and excess oil from the container 46 enters the suction line and from there with the gas through the compressor into the reservoir pressure container 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary-Type Compressors (AREA)
  • Compressor (AREA)
EP80106830A 1979-12-05 1980-11-06 Compresseur, en particulier compresseur à vis avec circuit de lubrification Withdrawn EP0030275A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792948993 DE2948993A1 (de) 1979-12-05 1979-12-05 Verdichter, insbesondere schraubenverdichter, mit schmiermittelkreislauf
DE2948993 1979-12-05

Publications (1)

Publication Number Publication Date
EP0030275A1 true EP0030275A1 (fr) 1981-06-17

Family

ID=6087687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106830A Withdrawn EP0030275A1 (fr) 1979-12-05 1980-11-06 Compresseur, en particulier compresseur à vis avec circuit de lubrification

Country Status (5)

Country Link
EP (1) EP0030275A1 (fr)
JP (1) JPS5685587A (fr)
AU (1) AU6468680A (fr)
BR (1) BR8007897A (fr)
DE (1) DE2948993A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134638A1 (fr) * 1983-07-12 1985-03-20 Dunham-Bush Inc. Compresseur rotatif à vis pour système de conditionnement d'air
EP0314819A1 (fr) * 1987-10-31 1989-05-10 Leybold Aktiengesellschaft Pompe à vide à deux arbres avec au moins un passage de liaison entre les chambres des paliers
EP0758054A1 (fr) * 1995-08-09 1997-02-12 SULZER-ESCHER WYSS GmbH Système de circulation d'huile pour un compresseur à vis
EP2431613A3 (fr) * 2010-09-17 2016-04-06 Pfeiffer Vacuum GmbH Joint d'arbre pour une pompe à vide
BE1023673B1 (nl) * 2015-12-11 2017-06-12 Atlas Copco Airpower Naamloze Vennootschap Werkwijze voor het regelen van de vloeistofinjectie van een compressorinrichting, een vloeistofgeïnjecteerde compressorinrichting en een vloeistofgeïnjecteerd compressorelement
WO2017096439A1 (fr) * 2015-12-11 2017-06-15 Atlas Copco Airpower, Naamloze Vennootschap Procédé permettant de réguler l'injection de liquide d'un dispositif de compresseur ou de détendeur, dispositif de compresseur ou de détendeur à injection de liquide et un élément de compresseur ou de détendeur à injection de liquide
WO2017096438A1 (fr) * 2015-12-11 2017-06-15 Atlas Copco Airpower, Naamloze Vennootschap Procédé de régulation de l'injection de liquide d'un compresseur, compresseur à injection de liquide et élément compresseur à injection de liquide
BE1023714B1 (nl) * 2015-12-11 2017-06-26 Atlas Copco Airpower Naamloze Vennootschap Werkwijze voor het regelen van de vloeistofinjectie van een compressor- of expanderinrichting, een vloeistofgeïnjecteerde compressor- of expanderinrichting en een vloeistofgeïnjecteerd compressor- of expanderelement
US20220042592A1 (en) * 2018-09-27 2022-02-10 Zf Friedrichshafen Ag Measuring arrangement for lubricant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE459203B (sv) * 1983-12-01 1989-06-12 Atlas Copco Ab Axeltaetning
CN108757584B (zh) * 2018-07-09 2024-03-12 大同北方天力增压技术有限公司 一种涡轮增压器用消音器及其补气方法
DE102019111774A1 (de) * 2019-03-25 2020-10-01 Liebherr-Components Biberach Gmbh Antriebseinrichtung für eine Schlitzwandfräse
CN113864188A (zh) * 2021-07-23 2021-12-31 西安交通大学 一种降低搅油损失的两级螺杆空压机回油装置及方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009347B (de) * 1954-07-03 1957-05-29 Werner Rietschle Drehkolbengeblaese mit Umlaufschmierung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009347B (de) * 1954-07-03 1957-05-29 Werner Rietschle Drehkolbengeblaese mit Umlaufschmierung

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134638A1 (fr) * 1983-07-12 1985-03-20 Dunham-Bush Inc. Compresseur rotatif à vis pour système de conditionnement d'air
EP0314819A1 (fr) * 1987-10-31 1989-05-10 Leybold Aktiengesellschaft Pompe à vide à deux arbres avec au moins un passage de liaison entre les chambres des paliers
EP0758054A1 (fr) * 1995-08-09 1997-02-12 SULZER-ESCHER WYSS GmbH Système de circulation d'huile pour un compresseur à vis
US5765392A (en) * 1995-08-09 1998-06-16 Sulzer-Escher Wyss Gmbh Screw compressor apparatus for refrigerants with oils soluble in refrigerants
EP2431613A3 (fr) * 2010-09-17 2016-04-06 Pfeiffer Vacuum GmbH Joint d'arbre pour une pompe à vide
CN106870374A (zh) * 2015-12-11 2017-06-20 阿特拉斯·科普柯空气动力股份有限公司 压缩机或膨胀机装置、元件及控制该装置液体喷射的方法
WO2017096439A1 (fr) * 2015-12-11 2017-06-15 Atlas Copco Airpower, Naamloze Vennootschap Procédé permettant de réguler l'injection de liquide d'un dispositif de compresseur ou de détendeur, dispositif de compresseur ou de détendeur à injection de liquide et un élément de compresseur ou de détendeur à injection de liquide
WO2017096438A1 (fr) * 2015-12-11 2017-06-15 Atlas Copco Airpower, Naamloze Vennootschap Procédé de régulation de l'injection de liquide d'un compresseur, compresseur à injection de liquide et élément compresseur à injection de liquide
BE1023673B1 (nl) * 2015-12-11 2017-06-12 Atlas Copco Airpower Naamloze Vennootschap Werkwijze voor het regelen van de vloeistofinjectie van een compressorinrichting, een vloeistofgeïnjecteerde compressorinrichting en een vloeistofgeïnjecteerd compressorelement
CN106870329A (zh) * 2015-12-11 2017-06-20 阿特拉斯·科普柯空气动力股份有限公司 调节压缩机的液体注射的方法、液体注射的压缩机及元件
BE1023714B1 (nl) * 2015-12-11 2017-06-26 Atlas Copco Airpower Naamloze Vennootschap Werkwijze voor het regelen van de vloeistofinjectie van een compressor- of expanderinrichting, een vloeistofgeïnjecteerde compressor- of expanderinrichting en een vloeistofgeïnjecteerd compressor- of expanderelement
EP3505764A1 (fr) * 2015-12-11 2019-07-03 ATLAS COPCO AIRPOWER, naamloze vennootschap Dispositif de compresseur à injection de liquide ou dispositif extenseur et dispositif d'élément de compresseur à injection de liquide ou d'élément d'extenseur
CN106870329B (zh) * 2015-12-11 2020-06-05 阿特拉斯·科普柯空气动力股份有限公司 调节压缩机的液体注射的方法、液体注射的压缩机及元件
US10920777B2 (en) 2015-12-11 2021-02-16 Atlas Copco Airpower, Naamloze Vennootschap Method for regulating the liquid injection of a compressor or expander device, a liquid-injected compressor or expander device, and a liquid-injected compressor or expander element
US11614088B2 (en) 2015-12-11 2023-03-28 Atlas Copco Airpower, Naamloze Vennootschap Method of controlling the temperature and mass flow of a liquid injected into the bearings and compressor space of a compressor using two separated liquid supplies
US20220042592A1 (en) * 2018-09-27 2022-02-10 Zf Friedrichshafen Ag Measuring arrangement for lubricant
US11566700B2 (en) * 2018-09-27 2023-01-31 Zf Friedrichshafen Ag Measuring arrangement for lubricant

Also Published As

Publication number Publication date
JPS5685587A (en) 1981-07-11
BR8007897A (pt) 1981-08-11
AU6468680A (en) 1981-06-11
DE2948993A1 (de) 1981-06-11

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