EP1554496B1 - Machine de compression pourvue de deux rotors a rotation en sens inverse - Google Patents

Machine de compression pourvue de deux rotors a rotation en sens inverse Download PDF

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Publication number
EP1554496B1
EP1554496B1 EP03809330A EP03809330A EP1554496B1 EP 1554496 B1 EP1554496 B1 EP 1554496B1 EP 03809330 A EP03809330 A EP 03809330A EP 03809330 A EP03809330 A EP 03809330A EP 1554496 B1 EP1554496 B1 EP 1554496B1
Authority
EP
European Patent Office
Prior art keywords
housing
compressor machine
wall
rotors
machine according
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
EP03809330A
Other languages
German (de)
English (en)
Other versions
EP1554496A1 (fr
Inventor
Fritz-Martin Scholz
Wolf-Rüdiger WAGENER
Daniel Greiner
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.)
Gardner Denver Schopfheim GmbH
Original Assignee
Rietschle Thomas Schopfheim GmbH
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Filing date
Publication date
Application filed by Rietschle Thomas Schopfheim GmbH filed Critical Rietschle Thomas Schopfheim GmbH
Publication of EP1554496A1 publication Critical patent/EP1554496A1/fr
Application granted granted Critical
Publication of EP1554496B1 publication Critical patent/EP1554496B1/fr
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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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
    • 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
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation

Definitions

  • the invention relates to a compressor machine with two counter-rotating rotors, which are mounted on two parallel, spaced-apart and mounted in a housing shafts, one of which is driven directly and the other by intermeshing, mounted on the shafts gears.
  • Compressor machines with two oppositely rotating rotors can work as compressors or vacuum pumps.
  • EP 1 163 450 A1 such a machine with claw-type rotor blades is known, which can generate both suction air and blown air and is particularly suitable for use in the field of paper processing. Due to the internal compression of such machines, significantly higher pressure ratios can be achieved than e.g. by means of a roots pump.
  • By flying arrangement of the rotors in a pot-like housing a simple construction is achieved.
  • the two waves coupling gear on the one hand and the shaft bearing on the other hand are arranged in separate housing parts, which must be exactly aligned and pinned.
  • the cup-shaped housing receiving the rotors must be pinned exactly to the transmission housing. This results in the need to edit pin holes as accurately as possible from two different sides of a housing part. Inaccuracies lead to skewed shafts and thus increased bearing loads, gear noise and other malfunctions.
  • US 2,635,552 A discloses a rotary pump for pumping liquids primarily from the food sector.
  • the pump has two parallel shafts to each of which a rotor is mounted flying. It comprises a gear housing with a gear chamber for receiving gear wheels and a housing bolted to the gear housing with a working chamber for receiving the rotors. The bearing of the waves takes place in the end walls of the gear chamber.
  • US 1,386,792 A discloses a rotary blower with a housing and two parallel shafts to each of which a rotor is mounted.
  • a working chamber In the housing, a working chamber, a gear chamber and an air chamber therebetween are arranged.
  • the working chamber is bounded on one side by a radial cover. The storage of the waves takes place in a transmission chamber limiting frontal outer wall and in the radial cover.
  • the invention provides a compacting machine in which, despite simplified manufacture and a reduced number of parts, precise alignment of the shafts is ensured.
  • the compressor machine according to the invention has two rotors running in opposite directions, which are mounted on two parallel, spaced-apart and mounted in a housing shafts. One of the waves is direct and the other by intermeshing waves Gears driven.
  • the housing has two integral with each other and with a peripheral wall formed radial walls in which the shafts are mounted. Between these radial walls, the gears are arranged. A side wall of the housing has a closed by a removable lid opening. With the cover removed, the gears can be mounted on the shafts through this opening.
  • the bearing bores for the shafts can be mounted and machined in the one-piece housing with a single set-up so that with minimal number of parts any cause of alignment errors is eliminated.
  • the lid closing the opening in the side wall of the housing has no influence on the bearing of the shafts. It is a simple part that only has to close the opening and seal against oil leakage. It has been found that the so avoided even small misalignments leads to better efficiency and reduced running noise.
  • one of the radial walls is a radial outer wall and the other an intermediate wall which delimits on its one side with the radial outer wall a gear housing receiving the gears and on its other side a rotor accommodating the working chamber.
  • the compressor machine according to the invention is characterized in that the working chamber is closed on the side facing away from the intermediate wall end face by a radial housing cover; the housing forms a monobloc base body, which has an opening at its front end facing the housing cover, the width of which is the largest of all located in the interior of the housing axial passages and holes, so that they are accessible for processing through this opening in a clamping of the body are, and that the intermediate wall in turn has axially through openings for receiving Wellenlagem whose width is greater than that of the axial bearing bores in the radial outer wall.
  • the compressor machine described here by way of example has rotors with claw-shaped rotor blades and can be operated both as a compressor and as a vacuum pump.
  • an integrally molded housing body 12 is mounted with a flanged electric motor 14.
  • the housing body 12 has two radial, parallel and spaced apart walls 16, 18 which are interconnected by a peripheral wall 20.
  • the radial wall 16 forms an outer wall.
  • the radial wall 18 forms an intermediate wall of the housing body 12 and defines a transmission chamber 22 formed between the walls 16, 18 from a working chamber 24 which receives two rotors 26, 28 with claw-like rotor blades.
  • the rotor 26 is mounted in a floating manner on an axial end of a shaft 30, which is mounted in the radial walls 16, 18. The opposite axial end of the shaft 30 is coupled directly to the output shaft of the electric motor 14.
  • the rotor 28 is mounted in a floating manner on an axial end of a second shaft 32, which is likewise mounted in the radial walls 16, 18.
  • the shafts 30, 32 are parallel and spaced apart.
  • the shafts 30, 32 are coupled together by two intermeshing, arranged in the gear chamber 22 gears 34, 36, so that they rotate synchronously and in opposite directions of rotation.
  • the housing body 12 has a side wall with an opening 38 which can be closed by a lid 40 fitted from outside. This opening 38 is dimensioned so that when removed cover 40, the gears 34, 36 in the gear chamber 22 for mounting on the shafts 30, 32 can be introduced.
  • a bearing cover plate 42 is attached to the intermediate wall 18. At its end remote from the bearing cover plate 42 axial end of the working chamber 24 is closed by a radial housing cover 44.
  • a hood 46 To the housing cover 44 includes a hood 46, which encloses a coupled for example with the shaft 30 or having a third-party drive fan.
  • the described compressor machine is preferably a so-called "claw compressor", ie a machine with claw-shaped rotor blades and with internal compression.
  • Figure 4 shows three phases in the cycle of such a machine, namely at a) the beginning of the compression process, at b) the advanced compression process and at c) the phase of pushing out the compacted volume.
  • the phase shown in Figure 4a) is preceded by the inlet phase, in which a common inlet chamber is filled, then divided into two Operakammem and finally merged into a common volume, which then undergoes the internal compression.
  • An outlet port denoted by A is closed during rotation of the rotors during the phase of internal compression and during the inlet phase by one of the end faces of the lower rotor.
  • the outlet opening A is released by the lower rotor, so that the compressed volume can be ejected through the outlet port A.
  • This outlet opening leads axially through the housing cover 44 out of the working space of the compressor machine.
  • FIG. 5 shows an enlarged view of the shaft bearing on the intermediate wall 18 and arranged on the bearing cover plate 42 shaft seal.
  • the shaft bearing consists of a generally designated 50 double ball bearing.
  • a recess 52 is formed in the bearing cover plate 42.
  • a shaft seal 54 made of rubber-elastic material is arranged, which is sealingly abutting with a pointed sealing edge 54a on the outer circumference of a shrunk onto the shaft 32 sleeve 56.
  • the sleeve 56 is sealed with a sealing ring 58 against the shaft 32.
  • the sleeve 56 has a radially raised shoulder 56a, in which two sealing rings 60 are received axially adjacent to each other.
  • the sealing rings 60 seal the sleeve 56 against the inner circumference of the recess in the bearing cover plate 42. Between the sealing ring 54 and the recess in the bearing cover plate 42 remains a gap 62 which communicates with a bore 64 in connection. The bore 64 leads through the bearing cover plate 42 to the outside.
  • the peculiarity of the shaft seal shown in Figure 5 is that it is arranged on the bearing cover plate 42 and thus allows easy installation of the open end side of the housing base body ago.
  • the main body of the housing is surrounded by a hood 70 which delimits axial cooling air passages 72 with the outer circumference of the housing.
  • the cooling air channels 72 lead from a protective grid 74 adjacent to the housing cover 44 axially along the outer circumference of the housing to behind the gear chamber, where they open radially inwardly into a fan chamber 76, in which a fan is arranged, the rotor is mounted on a drive shaft, which with the lower shaft 30 is coupled.
  • the cooling air exits radially downwards.

Claims (7)

  1. Machine de compression pourvue de deux rotors à rotation en sens inverse (26, 28) qui sont montés sur deux arbres (30, 32) parallèles, distants l'un de l'autre et logés dans un boîtier (12), l'un d'entre eux étant entraîné directement et l'autre par des roues dentées (34, 36) engrenant les unes dans les autres, disposées sur les arbres, étant précisé que
    - le boîtier (12) comporte deux parois (16, 18) radiales formées d'une seule partie l'une avec l'autre et avec une paroi périphérique, dans lesquelles sont logés les arbres (30, 32) et entre lesquelles sont disposées les roues dentées (34, 36), et une paroi latérale avec une ouverture (38) fermée par un couvercle (40) latéral amovible, et
    - une des parois radiales est une paroi extérieure radiale (16) et l'autre une paroi intermédiaire (18), qui du côté de la paroi extérieure radiale délimite une chambre d'engrenage (22) accueillant les roues dentées et de l'autre côté une chambre de travail (24) recevant les rotors (26, 28), caractérisée en ce que
    - la chambre de travail (24) est fermée du côté frontal opposé à la paroi intermédiaire (18) par un couvercle radial de boîtier (44);
    - le boîtier (12) forme un corps de base monobloc qui à son extrémité frontale tournée vers le couvercle de boîtier (44) comporte une ouverture dont la largeur est la plus grande de tous les passages et alésages axiaux situés à l'intérieur du boîtier (12), de sorte que ceux-ci sont accessibles à travers cette ouverture pour le traitement lorsque le corps de base est serré, et en ce que
    - la paroi intermédiaire (18) de son côté comporte des ouvertures axialement continues destinées à recevoir les paliers d'arbres, dont la largeur est supérieure à celle des alésages axiaux des paliers dans la paroi extérieure radiale (16).
  2. Machine de compression selon la revendication 1, caractérisée en ce que les rotors (26, 28) sont disposés en porte-à-faux sur les arbres (30, 32).
  3. Machine de compression selon la revendication 1 ou 2, caractérisée en ce que la chambre de travail (24) sur le côté frontal opposé à la paroi intermédiaire (18) est fermée par un couvercle de boîtier (44), dans lequel est formé un orifice de décharge, qui lors de la rotation des rotors (26, 28) est dégagé suite à une phase de compression interne et fermé par la face frontale d'un des rotors pendant une phase d'admission.
  4. Machine de compression selon l'une des revendications précédentes, caractérisée en ce qu'une plaque de chapeau de palier (42) est appliquée sur la paroi intermédiaire (18) du côté des rotors.
  5. Machine de compression selon la revendication 4, caractérisée en ce que la plaque de chapeau de palier (42) comporte des creux pour recevoir les joints d'étanchéité des arbres.
  6. Machine de compression selon l'une des revendications précédentes, caractérisée en ce qu'au couvercle radial de boîtier (44) est contigu un capot (70) qui entoure un ventilateur.
  7. Machine de compression selon l'une des revendications 1 à 5, caractérisée en ce que la paroi périphérique du boîtier (12) est entourée d'un capot (70) qui forme avec la paroi périphérique des canaux d'air de refroidissement (72), qui depuis la surface frontale adjacente au couvercle de boîtier (44) sont guidés jusqu'à un ventilateur lequel, sur le côté de la chambre d'engrenage (22) opposé à la chambre de travail (24), est disposé sur un arbre primaire.
EP03809330A 2002-10-25 2003-10-24 Machine de compression pourvue de deux rotors a rotation en sens inverse Expired - Lifetime EP1554496B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20216504U DE20216504U1 (de) 2002-10-25 2002-10-25 Verdrängermaschine mit gegensinnig laufenden Rotoren
DE20216504U 2002-10-25
PCT/EP2003/011853 WO2004038227A1 (fr) 2002-10-25 2003-10-24 Machine de compression pourvue de deux rotors a rotation en sens inverse

Publications (2)

Publication Number Publication Date
EP1554496A1 EP1554496A1 (fr) 2005-07-20
EP1554496B1 true EP1554496B1 (fr) 2006-06-07

Family

ID=7976350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03809330A Expired - Lifetime EP1554496B1 (fr) 2002-10-25 2003-10-24 Machine de compression pourvue de deux rotors a rotation en sens inverse

Country Status (9)

Country Link
US (1) US7128543B2 (fr)
EP (1) EP1554496B1 (fr)
JP (1) JP4148948B2 (fr)
KR (1) KR100604734B1 (fr)
CN (1) CN100489311C (fr)
AU (1) AU2003276182A1 (fr)
DE (2) DE20216504U1 (fr)
HK (1) HK1086872A1 (fr)
WO (1) WO2004038227A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4353837B2 (ja) * 2004-03-22 2009-10-28 住友重機械工業株式会社 減速機及び減速機用摩擦負荷付与部材
DE102006035783A1 (de) * 2006-08-01 2008-02-07 Grasso Gmbh Refrigeration Technology Schraubenverdichter
TW200848617A (en) * 2007-06-08 2008-12-16 Jaguar Prec Industry Co Ltd Motor direct drive air pump, related applications and manufacturing methods thereof
JP2010144576A (ja) * 2008-12-17 2010-07-01 Toyota Industries Corp 電動ルーツ型圧縮機
DE102008063983A1 (de) * 2008-12-19 2010-07-01 Dürr Systems GmbH Pumpe zum Fördern eines Fluids, insbesondere Dosierpumpe
JP5504530B2 (ja) * 2009-09-15 2014-05-28 オリオン機械株式会社 回転ポンプ装置の製造方法
CN103047049B (zh) * 2012-12-31 2015-04-29 王来瑞 一种涡轮喷气发动机
KR101586330B1 (ko) * 2015-10-06 2016-01-19 (주)한국브로워 초저음 무맥동의 특성을 가진 용적형 회전식 브로워
CN109915365B (zh) * 2019-04-04 2023-11-17 烟台东德氢能技术有限公司 罗茨式空气压缩机

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US1386792A (en) * 1919-08-14 1921-08-09 John T Needham Rotary blower
US2188752A (en) * 1938-01-12 1940-01-30 Roots Connersville Blower Corp Fluid handling apparatus
US2642808A (en) * 1948-05-17 1953-06-23 Waterous Co Sanitary pump
US2635552A (en) * 1949-01-31 1953-04-21 Bump Pump Co Sanitary pump assemblage
FR1480749A (fr) 1966-05-23 1967-05-12 Midland Ross Corp Compresseur du type roots
US4057375A (en) * 1976-10-22 1977-11-08 Nachtrieb Paul W Pump structure
EP0048095B1 (fr) 1980-09-05 1983-12-14 British Nuclear Fuels PLC Pompe pour des gaz lourds
US4457680A (en) * 1983-04-27 1984-07-03 Paget Win W Rotary compressor
US4772187A (en) * 1986-09-08 1988-09-20 Thompson George A Rotary pump
GB9004594D0 (en) 1990-02-28 1990-04-25 Apv Crepaco Pumps Ltd Improvements in or relating to rotary pumps
CN2299170Y (zh) * 1996-11-08 1998-12-02 徐曦 单级爪式转子真空泵
DE19819538C2 (de) * 1998-04-30 2000-02-17 Rietschle Werner Gmbh & Co Kg Druck-Saug-Pumpe
DE29905249U1 (de) * 1999-03-22 1999-12-30 Rietschle Werner Gmbh & Co Kg Pumpe zur Erzeugung von Druck und Unterdruck
US6729863B2 (en) * 1999-03-22 2004-05-04 Werner Rietschle Gmbh & Co. Kg Rotary pump having high and low pressure ports in the housing cover

Also Published As

Publication number Publication date
HK1086872A1 (en) 2006-09-29
US20060051231A1 (en) 2006-03-09
CN1708648A (zh) 2005-12-14
JP4148948B2 (ja) 2008-09-10
US7128543B2 (en) 2006-10-31
EP1554496A1 (fr) 2005-07-20
DE50303735D1 (de) 2006-07-20
DE20216504U1 (de) 2003-03-06
JP2006504030A (ja) 2006-02-02
KR100604734B1 (ko) 2006-07-28
AU2003276182A1 (en) 2004-05-13
WO2004038227A1 (fr) 2004-05-06
KR20050071619A (ko) 2005-07-07
CN100489311C (zh) 2009-05-20

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