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EP1075601B1 - Pompe a vide - Google Patents

Pompe a vide Download PDF

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Publication number
EP1075601B1
EP1075601B1 EP99923485A EP99923485A EP1075601B1 EP 1075601 B1 EP1075601 B1 EP 1075601B1 EP 99923485 A EP99923485 A EP 99923485A EP 99923485 A EP99923485 A EP 99923485A EP 1075601 B1 EP1075601 B1 EP 1075601B1
Authority
EP
European Patent Office
Prior art keywords
rotors
pump
pump chamber
pump according
pressure
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
EP99923485A
Other languages
German (de)
English (en)
Other versions
EP1075601A1 (fr
Inventor
Reinhard Garczorz
Fritz-Martin Scholz
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.)
Rietschle Werner GmbH and Co KG
Werner Rietschle GmbH and Co KG
Original Assignee
Rietschle Werner GmbH and Co KG
Werner Rietschle GmbH and Co KG
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 Rietschle Werner GmbH and Co KG, Werner Rietschle GmbH and Co KG filed Critical Rietschle Werner GmbH and Co KG
Publication of EP1075601A1 publication Critical patent/EP1075601A1/fr
Application granted granted Critical
Publication of EP1075601B1 publication Critical patent/EP1075601B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/122—Arrangements for supercharging the working space
    • 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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/123—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth

Definitions

  • the invention relates to a pump for the simultaneous generation of Pressure and vacuum.
  • Such pumps are advantageous when an industrial process Requires compressed air and negative pressure at the same time, since the pump only needs a drive.
  • a separate charging port that communicates with the atmosphere is connected to ensure the volume flow for the compressed air. Accordingly, several must be separated from each other in the pump chamber Cells are formed. In the prior art, this is only with rotary slide systems successful which are known for example from GB-A-818 691. But rotary valves are subject to wear and can only be lubricated if special materials are used operate.
  • a pump for simultaneous Generation of compressed air and negative pressure provided that is almost wear-free and without the use of special materials can be manufactured.
  • rotate in the pump chamber has two at least three-bladed rotors around parallel, axes offset against each other and combing without contact, to separate from each other with the peripheral wall of the pump chamber To form cells.
  • the rotors can be in the pump chamber those for the simultaneous generation of compressed air and vacuum differentiate required cells. Because the rotors contactless with each other and also with the peripheral wall of the Pump chamber interact, occurs in the area of the pump chamber no wear and tear.
  • the sealing gap between the rotors can be kept very small by optimizing their geometry; he is only a fraction of a millimeter in practical versions, so that good pressure and vacuum values are guaranteed. These values become even better with increasing operating time, since the Time-forming deposits to reduce the size of the sealing gap to lead.
  • a pump with two three-bladed rotors that run in opposite directions around parallel axes rotate, is already known from DE-A-2 422 857. This However, the pump has no charging connection and is therefore not suitable for simultaneous generation of compressed air and negative pressure.
  • the pump according to the invention is particularly suitable for use in suitable for paper processing industries, mainly for applications, which do not provide or adjust compressed air separately and Require vacuum.
  • Compressed air is e.g. to blow on one side Stacks of paper needed to support sheet separation.
  • the pulsating compressed air generation by the pump according to the invention proves to be useful here, since the paper edges by intermittent occurring compressed air can be separated more easily. Is negative pressure in such applications for sucking the top sheet of paper required.
  • the rotors form with the pump chamber connected to the suction port through which Rotation of the rotors and their volume increasing suction cell Pressure cell that reduces its volume when the rotors rotate and is connected to the pressure connection.
  • This pressure cell is out two initially separated from each other in the course of the rotation of the rotors Charging cells formed, each with an associated charging port have and with the further rotation of the rotors with each other Pressure cell are combined.
  • the charging cells are before their union essentially isobar and isochoric in the pump chamber, i.e. the air in the charging cells experiences at the displacement of the charging cells essentially no pressure and no volume change.
  • the single-stage pump for the simultaneous generation of Pressure and vacuum has a housing that consists of a load-bearing Middle part 10, one on one side of the middle part 10 attached housing cover 12, one on the other side of the Middle part 10 attached housing ring 14 and one on the housing ring 14 adjoining cover plate 16 there. Between the middle part 10, the housing ring 14 and the cover plate 16 is a pump chamber 18 educated.
  • a pump chamber 18 educated in the opposite wall parts of the Housing cover 12 and the middle part 10 are two shafts 20, 22 Flying parallel to and offset from each other in ball bearings stored.
  • the pinion 24, 26 are in meshing engagement with one another so that the shafts 20, 22 rotate synchronously with each other in opposite directions.
  • For the rotary drive is the lower shaft 22 led out of the housing cover 12.
  • each rotor has 30, 32 three wings 30a and 32a.
  • the pump chamber 18 has the side view Form of two intersecting circles, joined together in the form of an "8" are.
  • the blades 30a of the rotor 30 have a shape that the shape of the blades 32a of the rotor 32 is different.
  • the geometry the wing 30a, 32a and the pump chamber 18 is determined so that at the rotation of the rotors 30, 32 a plurality of separate cells are formed, as with reference to Figures 4a to 4h further explained in more detail below by the wings 30a, 32a without contact a sealing gap of a fraction of 1 mm above and along slide the outer circumference of the pump chamber 18.
  • the cover plate 16 is provided with a series of cutouts, which is closed to the outside by an attached closure plate 36 become.
  • the closure plate 36 are two pipe sockets 42, 44th screwed.
  • the upper pipe socket 42 forms the suction connection and is connected to a recess 50 of the cover plate 16.
  • the lower Pipe socket 44 forms the pressure connection and is with a recess 52 connected in the cover plate 16.
  • Two further cutouts 54a, 54b in the cover plate 16 are open to the atmosphere and form charging connections.
  • Figure 4a shows the rotors 30, 32 in a rotational position in which their wings 30a, 32a with the wall of the pump chamber 18 a closed, only common to the recess 50 Form cell 60.
  • This cell 60 enlarges in the further Rotation of the rotors 30, 32 their volume, as can be seen in Figure 4b.
  • This cell 60 is therefore a suction cell.
  • FIG. 4c shows two cells 62a, 62b which are separate from one another arise immediately after the state shown in FIG cell 60 was separated into two sub-cells.
  • the rotor 30 assigned cell 62a already borders the recess 54a, and the Cell 62b associated with rotor 32 approaches recess 54b.
  • Figure 4d are the cells 62a, 62b with those leading to the atmosphere Recesses 54a and 54b in connection and are filled with air and charged to ambient pressure so that the air mass flow increases becomes.
  • the cells 62a, 62b are thus charging cells.
  • the pump chamber 18 is free of any lubricant because the Work rotors 30, 32 without contact. To the drive side is the Pump chamber 18 sealed by seals on the shafts 20, 22.
  • the housing can be equipped with cooling fins for cooling be arranged, and by one on the side of the GcHouseldeckels 12 Cooling fan is cooling air from the cover plate 16 over the Housing ring 14, the middle part 10 and the housing cover 12 out.
  • a resonance damper is used to dampen the operating noise is matched to the operating frequency of the pump. This frequency is due to the three-bladed design of the rotors triple speed of the shafts 20, 22. The increased operating frequency facilitates the accommodation of the resonance damper because of its length is reduced accordingly.
  • the described flying bearing arrangement of the rotors is advantageous up to a volume flow of approximately 300 m 3 / h.
  • Pumps with a larger volume flow are preferably designed with rotors mounted on both sides. In this case, connections are left in both side plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Claims (10)

  1. Pompe pour engendrer simultanément de la pression et du vide, comportant une chambre de pompe (18) formée dans un boítier, qui présente un raccord d'aspiration, un raccord de pression et un raccord de chargement, caractérisée en ce que dans la chambre de pompe (18), deux rotors (30, 32) à au moins trois pales tournent en sens opposés autour d'axes parallèles décalés l'uns par rapport à l'autre et s'engrènent sans se toucher, et forment avec la paroi périphérique de la chambre de pompe (18) des cellules (60, 62a, 62b, 64) séparées les unes des autres.
  2. Pompe selon la revendication 1, caractérisée en ce que les rotors (30, 32) forment avec la chambre de pompe (18) une cellule d'aspiration (60) reliée au raccord d'aspiration (50) et dont le volume est agrandi par la rotation des rotors (30, 32).
  3. Pompe selon la revendication 1 ou 2, caractérisée en ce que les rotors (30, 32) forment avec la chambre de pompe (18) une cellule de pression (64) reliée au raccord de pression (52) et dont le volume est réduit par la rotation des rotors (30, 32).
  4. Pompe selon la revendication 3, caractérisée en ce que les rotors (30, 32) forment avec la chambre de pompe deux cellules de chargement (62a, 62b) tout d'abord séparées l'une de l'autre pendant la rotation des rotors et qui, pendant la poursuite de la rotation des rotors, sont réunies l'une à l'autre pour former la cellule de pression (64).
  5. Pompe selon la revendication 4, caractérisée en ce qu'au moins une cellule de chargement (62a, 62b) présente un raccord de chargement associé (54a, 54b).
  6. Pompe selon la revendication 4 ou 5, caractérisée en ce qu'avant d'être réunies, les cellules de chargement (62a, 62b) sont déplacées de manière sensiblement isobare et isochore dans la chambre de pompe (18).
  7. Pompe selon l'une des revendications précédentes, caractérisée en ce que la chambre de pompe (18) est exempte de lubrifiants.
  8. Pompe selon l'une des revendications précédentes, caractérisée en ce que la chambre de pompe (18) est délimitée entre deux plaques latérales (10, 16), et en ce que dans au moins une des plaques latérales, des espaces sont évidés pour les raccords (60, 52, 54a, 54b).
  9. Pompe selon l'une des revendications précédentes, caractérisée en ce que les arbres (20, 22) sont montés en porte-à-faux et en ce que les rotors (30, 32) sont agencés sur les extrémités libres des arbres (20, 22).
  10. Pompe selon l'une des revendications précédentes, caractérisée en ce que les arbres (20, 22) sont synchronisés par deux pignons (24, 26) qui s'engrènent mutuellement et en ce qu'au moins un des rotors (30, 32) est fixé de manière ajustable sur l'arbre associé (20, 22).
EP99923485A 1998-04-30 1999-04-28 Pompe a vide Expired - Lifetime EP1075601B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19819538A DE19819538C2 (de) 1998-04-30 1998-04-30 Druck-Saug-Pumpe
DE19819538 1998-04-30
PCT/EP1999/002882 WO1999057439A1 (fr) 1998-04-30 1999-04-28 Pompe a vide

Publications (2)

Publication Number Publication Date
EP1075601A1 EP1075601A1 (fr) 2001-02-14
EP1075601B1 true EP1075601B1 (fr) 2002-09-18

Family

ID=7866414

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99923485A Expired - Lifetime EP1075601B1 (fr) 1998-04-30 1999-04-28 Pompe a vide
EP99948559A Expired - Lifetime EP1076760B1 (fr) 1998-04-30 1999-04-28 Machine a pistons rotatifs comportant des rotors a trois ailettes

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP99948559A Expired - Lifetime EP1076760B1 (fr) 1998-04-30 1999-04-28 Machine a pistons rotatifs comportant des rotors a trois ailettes

Country Status (7)

Country Link
US (2) US6364642B1 (fr)
EP (2) EP1075601B1 (fr)
JP (2) JP2002513880A (fr)
KR (2) KR100556077B1 (fr)
CN (2) CN1128935C (fr)
DE (3) DE19819538C2 (fr)
WO (2) WO1999057419A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004009639A1 (de) * 2004-02-27 2005-09-15 Rietschle Thomas Gmbh + Co. Kg Drehzahnverdichter

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20216504U1 (de) * 2002-10-25 2003-03-06 Werner Rietschle GmbH + Co. KG, 79650 Schopfheim Verdrängermaschine mit gegensinnig laufenden Rotoren
FR2859000B1 (fr) * 2003-08-20 2005-09-30 Renault Sa Dent d'engrenage et pompe a engrenages exterieurs
GB0410491D0 (en) * 2004-05-11 2004-06-16 Epicam Ltd Rotary device
DE502004002191D1 (de) * 2004-09-17 2007-01-11 Aerzener Maschf Gmbh Drehkolbenverdichter und Verfahren zum Betreiben eines Drehkolbenverdichters
TW200848617A (en) * 2007-06-08 2008-12-16 Jaguar Prec Industry Co Ltd Motor direct drive air pump, related applications and manufacturing methods thereof
JP5725660B2 (ja) * 2011-09-30 2015-05-27 アネスト岩田株式会社 クローポンプ
EP2674570A1 (fr) * 2012-06-14 2013-12-18 Bobby Boucher Charnière avec déverrouillage automatique mécanique
CN103775341B (zh) * 2012-10-15 2016-05-18 良峰塑胶机械股份有限公司 两外形相同的爪式转子对装置
NO2920409T3 (fr) 2013-02-08 2018-03-31
DE102013112704B4 (de) * 2013-11-18 2022-01-13 Pfeiffer Vacuum Gmbh Gehäuse für eine Wälzkolbenpumpe
US9605739B2 (en) * 2014-04-11 2017-03-28 Gpouer Co., Ltd. Power transmission system
JP6340557B2 (ja) * 2015-02-12 2018-06-13 オリオン機械株式会社 二軸回転ポンプ
JP6221140B2 (ja) * 2015-02-12 2017-11-01 オリオン機械株式会社 二軸回転ポンプ
JP6340556B2 (ja) * 2015-02-12 2018-06-13 オリオン機械株式会社 二軸回転ポンプ
RU2611117C2 (ru) * 2015-04-01 2017-02-21 Евгений Михайлович Пузырёв Роторная машина
DE102018203992A1 (de) 2018-03-15 2019-09-19 Gardner Denver Schopfheim Gmbh Drehkolbenmaschine
CN109630411B (zh) * 2018-12-06 2021-06-11 莱州市增峰石业有限公司 一种可变压缩比的增压器及应用和发动机调控技术
JP7109788B2 (ja) * 2019-10-28 2022-08-01 オリオン機械株式会社 回転ポンプ
JP6749714B1 (ja) * 2019-10-28 2020-09-02 オリオン機械株式会社 クローポンプ
JP6845596B1 (ja) * 2020-06-24 2021-03-17 オリオン機械株式会社 クローポンプ
CN116517826B (zh) * 2023-04-25 2024-03-22 北京通嘉宏瑞科技有限公司 一种转子组件及泵体结构

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE142587C (fr)
DE564152C (de) * 1931-11-22 1932-11-14 Otto Becker Jr Drehkolbengeblaese, insbesondere fuer Papierverarbeitungsmaschinen
GB622873A (en) * 1947-04-10 1949-05-09 Thomas Desmond Hudson Andrews Improvements in or relating to rotary blowers
US2764407A (en) 1951-10-03 1956-09-25 Roland Offsetmaschf Device for controlling the air in machines working with suction
FR1147777A (fr) * 1956-04-19 1957-11-29 Turbine volumétrique à deux rotors
GB818691A (en) * 1957-05-20 1959-08-19 Lacy Hulbert & Company Improvements in rotary air pumps
US2967054A (en) 1958-05-22 1961-01-03 Mergenthaler Linotype Gmbh Vacuum and pressure control valve for printing presses
DE1133500B (de) 1959-06-10 1962-07-19 Polysius Gmbh Roots-Geblaese
DE1287729B (fr) * 1961-10-19 1969-01-23
US3182900A (en) * 1962-11-23 1965-05-11 Davey Compressor Co Twin rotor compressor with mating external teeth
DE1628347A1 (de) 1967-01-19 1971-06-16 Hubrich Christoph Dipl Ing Innere Kuehlung eines im Unterdruckgebiet arbeitenden Rootsgeblaeses
DE1915269A1 (de) 1969-03-26 1970-10-08 Siemens Ag Roots-Geblaese
US3628893A (en) * 1970-05-04 1971-12-21 Poerio Carpigiani Liquid and air mixing gear pump
DE2027272C2 (de) 1970-06-03 1983-11-03 Aerzener Maschinenfabrik Gmbh, 3251 Aerzen Rotationskolbenverdichter
CH526046A (de) * 1971-02-03 1972-07-31 Apaw Sa Zahnradpumpe zur Herstellung von Luft-Flüssigkeitsgemischen, insbesondere in Softeis- und Schlagsahnemaschinen
DE2422857A1 (de) * 1974-05-10 1975-11-27 Petr Terk Maschine mit zentrisch gelagerten rotoren
NO137655C (no) * 1974-06-14 1978-03-29 Myrens Verksted As Roterende fortrengningspumpe.
US4480970A (en) * 1981-05-30 1984-11-06 Rolls-Royce Limited Self priming gear pump
DD209880A1 (de) 1982-08-27 1984-05-23 Halle Maschf Veb Anordnung und gestaltung der aufladeeinlassoeffnungen an einem schraubenverdichter
JPS62157289A (ja) * 1985-12-29 1987-07-13 Anretsuto:Kk 高真空用ル−ツブロワ−
EP0409287B1 (fr) 1987-05-15 1994-04-06 Leybold Aktiengesellschaft Pompe à vide avec espace de déplacement
US4859158A (en) 1987-11-16 1989-08-22 Weinbrecht John F High ratio recirculating gas compressor
EP0370117B1 (fr) 1988-10-24 1994-01-12 Leybold Aktiengesellschaft Pompe à vide avec deux arbres et méthode de fonctionnement
GB2233042A (en) * 1989-06-17 1991-01-02 Fleming Thermodynamics Ltd Screw expander/compressor
FR2653831A1 (fr) * 1989-11-02 1991-05-03 Cit Alcatel Pompe volumetrique.
GB2243651A (en) * 1990-05-05 1991-11-06 Drum Eng Co Ltd Rotary, positive displacement machine
US5078583A (en) * 1990-05-25 1992-01-07 Eaton Corporation Inlet port opening for a roots-type blower
US5071328A (en) * 1990-05-29 1991-12-10 Schlictig Ralph C Double rotor compressor with two stage inlets
NL9002027A (nl) 1990-09-14 1992-04-01 Westera Beheer Bv Inrichting voor het transport van papier, zoals in de vorm van vellen, in drukpersen, boekbindmachines en dergelijke.
DE4118843A1 (de) 1991-06-07 1993-02-11 Sihi Gmbh & Co Kg Fluessigkeitsringgaspumpe mit fliegend gelagertem fluegelrad
EP0578853B1 (fr) 1992-07-15 1996-09-25 Mario Antonio Morselli Machine rotative avec profiles conjugués en contact continu
DE4301907A1 (de) 1993-01-25 1994-07-28 Siemens Ag Flüssigkeitsringmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004009639A1 (de) * 2004-02-27 2005-09-15 Rietschle Thomas Gmbh + Co. Kg Drehzahnverdichter

Also Published As

Publication number Publication date
CN1299444A (zh) 2001-06-13
KR100608527B1 (ko) 2006-08-09
DE59906193D1 (de) 2003-08-07
EP1076760A1 (fr) 2001-02-21
KR20010043093A (ko) 2001-05-25
US6439865B1 (en) 2002-08-27
DE19819538C2 (de) 2000-02-17
EP1075601A1 (fr) 2001-02-14
CN1128935C (zh) 2003-11-26
CN1299434A (zh) 2001-06-13
KR20010043094A (ko) 2001-05-25
CN1105820C (zh) 2003-04-16
WO1999057419A1 (fr) 1999-11-11
DE19819538A1 (de) 1999-11-11
JP2002513887A (ja) 2002-05-14
WO1999057439A1 (fr) 1999-11-11
DE59902761D1 (de) 2002-10-24
EP1076760B1 (fr) 2003-07-02
US6364642B1 (en) 2002-04-02
JP2002513880A (ja) 2002-05-14
KR100556077B1 (ko) 2006-03-07

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