WO2012055734A2 - Pompe à vide - Google Patents

Pompe à vide Download PDF

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Publication number
WO2012055734A2
WO2012055734A2 PCT/EP2011/068248 EP2011068248W WO2012055734A2 WO 2012055734 A2 WO2012055734 A2 WO 2012055734A2 EP 2011068248 W EP2011068248 W EP 2011068248W WO 2012055734 A2 WO2012055734 A2 WO 2012055734A2
Authority
WO
WIPO (PCT)
Prior art keywords
motor
vacuum pump
shaft
displacement body
displacement
Prior art date
Application number
PCT/EP2011/068248
Other languages
German (de)
English (en)
Other versions
WO2012055734A3 (fr
Inventor
Rudolf Bahnen
Uwe Drewes
Klaus Rofall
Markus LÖBEL
Original Assignee
Gebr. Becker Gmbh
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 Gebr. Becker Gmbh filed Critical Gebr. Becker Gmbh
Priority to JP2013535363A priority Critical patent/JP2013541669A/ja
Publication of WO2012055734A2 publication Critical patent/WO2012055734A2/fr
Publication of WO2012055734A3 publication Critical patent/WO2012055734A3/fr

Links

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
    • 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
    • F04C18/14—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 toothed rotary pistons
    • F04C18/16—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 toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/02—Arrangements of bearings
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • 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
    • F04C29/025—Lubrication; Lubricant separation using a lubricant pump
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/52—Bearings for assemblies with supports on both sides
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts

Definitions

  • the invention relates to a vacuum pump, in particular screw pump, with two drive-coupled, displacer driving Verdrän- germatien, and a motor with a motor rotor, a motor shaft and a motor stator, wherein a pump housing is further provided in a working space in which arranged the displacement are divided, and a motor / gear compartment, which spaces are further separated by a penetrated by the Verdränger endeavorwellen partition.
  • the structure is not only expensive, but also associated with system-related cost disadvantages, since it can be used in terms of the engine is not on standard components.
  • the former document relates to a vacuum pump of other construction.
  • the displacement body shafts are arranged one behind the other, without overlapping transverse to the shaft longitudinal axis, and driven at their opposite ends.
  • a separate electric motor is provided in each case, with the synchronizing tion of the corresponding comparatively far apart drives an electronic control is provided.
  • the invention deals with the technical problem of specifying a vacuum pump, in particular a screw pump, which makes possible advantageous storage conditions with space-saving and cost-effective construction.
  • a possible solution of the problem is given according to a first inventive idea in an object in which at the same time as a (first) of the positive displacement shaft formed motor shaft on which the motor rotor is mounted, is mounted in the partition and at which further with respect to the partition opposite to the motor rotor of the displacer body driven by this displacement body is arranged, wherein also the VerdrängerEffwellen are stored in addition to a storage in the partition wall in an outer wall forming working space wall.
  • the displacement shaft thus also forms the motor shaft at the same time. Nevertheless, this displacement shaft forming the motor shaft is also mounted on both sides of the motor, and outside the motor, namely on the one hand in the partition and on the other hand in the working space wall.
  • These are conventional positive-displacement shaft bearings, which can therefore be elaborate in comparison to a motor shaft bearing of an electric motor as such. In particular, they can, as explained below in detail, be designed as oil-lubricated bearings.
  • the engine is formed as it were integrated with one of the positive displacement body shafts, the space required in the engine / gear compartment is comparatively low. It only takes one step, which can be achieved in a simple way by means of gear meshing.
  • Both displacer shaft can be assigned to the same space, the engine / gear room with the same bearings, for example, oil-lubricated bearings are stored.
  • bearings received in the dividing wall are preferably designed to accommodate both operationally occurring axial and radial forces.
  • the bearings received in the outer engine compartment wall are preferably designed essentially (only) for receiving radial forces.
  • the one (first) displacement body is arranged in alignment with and on the same shaft as the motor rotor.
  • the first displacement shaft has on both sides of the partition on comparable large masses.
  • Both preferred side by side and mutually parallel displacer body waves may be the same, especially the same length, be formed.
  • the electric motor standard components can be used, since the installation dimensions can be selected to correspond to standard dimensions with regard to the rotor to be applied on the shaft as well as the stator adapted in relation to the rotor.
  • Such a vacuum pump is characterized by cost-effective production by comparatively small dimensions and a comparatively low weight of the pump unit, this also achieved with a comparatively very small number of components.
  • a first and a second displacement shaft is described above and below, the concept of the vacuum pump is not limited thereto. It is also possible to provide one or more further displacement body shafts with correspondingly mounted displacement bodies be.
  • a further displacement shaft with simultaneously applied rotor and displacer and of course then also further assigned stator.
  • an embodiment with only two displacement body shafts, as also described here, is preferred.
  • all bearings in any case the bearings of the vacuum pump assigned to the engine / gearbox compartment, ie both the bearings in the partition wall and bearings in the (outer) engine compartment wall, are oil-lubricated.
  • the thus formed bearings can also be supplied uniformly (via an oil pump) and maintained.
  • the displacement body With respect to the displacement body is preferred that they are interchangeable with the displacement body shaft - respectively - are connected.
  • different materials can be selected for the displacement shaft on the one hand and the displacement on the other hand.
  • a displacement of aluminum or other good heat conducting material be formed.
  • such a design can achieve a highly uniform heat distribution in the displacers, which at the same time ensures a nearly equal thermal expansion of the displacer. In turn, a high accuracy of fit with a high degree of independence from the operating temperature is possible.
  • the material of a displacement shaft may be chosen in particular based on a non-magnetizable material, such as a high-alloy steel.
  • the motor rotor is also interchangeably connected to the motor shaft or the first displacement body shaft.
  • the connection can be realized via a shaft-hub connection of conventional type, for example via driver elements such as a feather key. Also with the help of a clamping set, d. H. Ring parts cooperating with each other via conical surfaces.
  • the motor stator may be shrunk into the gearbox / motor housing. It can also be used already shrunk into a socket motor stator by means of the socket in the engine / gear compartment.
  • a displacer shaft in particular the displacer shaft embodied at the same time as a motor shaft, it is preferred for it to be hollow. In this case, it is further preferred that coolant is guided in the cavity, for cooling both the motor rotor and the displacement body.
  • the hollow formation can by means of a through hole be realized. It is preferred that only the same time designed as a motor shaft Verdränger redesignwelle is cooled in this way. But it is also possible to additionally form the further, second displacement shaft as a hollow shaft and to cool accordingly in the same way.
  • the motor shaft designed as the first VerdrängerShe is supported at its working space end by a third bearing. More preferably, both displacer body shafts are supported at their working-side end by a third bearing.
  • This third bearing is further preferably designed such that it can absorb axial movements of the displacement body shaft, in particular caused by thermal change in length, readily.
  • a resilient support in the axial direction of the shaft end may be provided in the third bearing.
  • said third bearing is designed for a limited uptake of radial forces.
  • an outer ring of the third bearing can be provided radially damped.
  • This third bearing may be further preferably designed as a grease-lubricated bearing, moreover preferably as provided with a cap, so-called capped bearing.
  • a lubricant pump is provided. This serves in any case to supply said oil-lubricated bearings, but preferably also for cooling, for example with regard to the already described possible hollow design of one or both displacement body shafts.
  • the cooling is preferably carried out with the aid of the lubricant, which is more preferably a lubricating oil.
  • the first displacer shaft it is possible to achieve not only cooling of the motor rotor but also of the displacer arranged on the first displacer shaft. chen.
  • the coolant also flows out of the engine / gear compartment into the area of the working chamber due to the hollow formation of the displacer bodies, it is hermetically sealed from the space outside the displacer body shafts since it only flows inside the displacer body shafts separated. Specifically, it is preferable that the
  • Lubricant pump is driven by a portion of a VerdrängerSystemwelle that projects beyond an - outer - Häraumwandung.
  • the lubricant pump is accordingly preferably arranged outside the housing. It is thus directly accessible. It is so cool synonymous cool.
  • said portion of the displacement body shaft also forms the shaft of the lubricant pump.
  • the lubricant pump is an oil pump.
  • the lubricant pump is driven by a second displacement body shaft, which is not at the same time motor shaft.
  • the motor stator can be cooled by externally formed on the transmission / motor housing cooling fins.
  • a separate fan which acts on these cooling fins with an air flow.
  • a liquid cooling can be provided by means guided by cooling channels formed in the housing cooling liquid.
  • cooling of winding heads with oil or (altogether) oil mist cooling can be provided for cooling.
  • the drive the electric motor
  • the drive is preferably speed-controlled via a frequency converter. It is such a speed well above the speeds of standard motors possible.
  • the motor is preferably designed for a super-synchronous speed (in relation to the mains frequency). Since the lubricant pump is preferred directly through the second displacement body shaft This also results in a regulation of the lubricant pump which is adapted to the rotational speed.
  • the two displacement body shafts work together via a synchronous toothing.
  • the drive power is transmitted from the first, at the same time designed as a motor shaft Verdrängerèvewelle on the second displacement body shaft and on the other hand ensures the synchronism of the Verdränger endeavorwellen.
  • the synchronous toothing is arranged between the working space wall and the engine. This arrangement is particularly advantageous with regard to a mounting of the vacuum pump.
  • the overall arrangement described is advantageous in terms of balancing in that a preassembled assembly comprising a Verdränger redesignwelle together with the bearings and bushings, in the case of the first Verdränger redesignwelle with already mounted motor rotor, each with a seated synchronizing gears, can be balanced , Only the synchronizing gears are to be removed for installation again, otherwise the pre-assembled kit described here can be introduced into the pump housing and fastened there without a disassembly would be required again. By marking the position of the synchronizing tooth Wheels can also be reproduced in the given during balancing positioning in the course of assembly in a simple manner again. A repeated balancing in the installed state in the pump housing can be omitted.
  • Fig. 1 is a schematic cross-sectional view of a Vakuumpum PE, in horizontal section;
  • FIG. 2 shows the article according to FIG. 1 in a vertical section
  • the vacuum pump 1 Shown and described is a vacuum pump 1, which is formed in the embodiment as a screw pump.
  • the vacuum pump 1 has a first displacement body shaft 2 and a second displacement body shaft 3.
  • it is a dry-running pump.
  • the vacuum pump 1 further comprises a pump housing, which in a housing part 4 concerning a working space 5 and a housing part 6, the one Engine gear chamber 7 forms, is divided.
  • the housing parts 4, 6 are, in particular with regard to the housing part 6, housing parts which are closed radially relative to the displacer body shafts 2, 3 and are preferably integrally formed in this respect. For example, they can be castings.
  • closure plates are provided, wherein the engine / transmission chamber 7 associated closure plate forms a working space wall 8.
  • a partition wall 9 is formed, which is formed here in one piece with the motor / gear housing forming housing part 6.
  • the displacement body shafts 2, 3 are mounted by means of first bearings 10,11.
  • the bearings 10, 11 upstream, received in sealing bushings seals 12. It may be touching and / or non-contact shaft seals.
  • the seals and sealing bushes are preferably arranged only on one side of the partition wall 9 accordingly.
  • the displacement body shafts 2, 3 are provided with displacement bodies 13, 14. These act helically in the usual manner in the embodiment, but without touching.
  • the displacement body shafts 2, 3 are mounted in second bearings 15, 16. These bearings 15, 16 are received in the outer wall 8. Specifically, they are accommodated in the outer wall 8 in turn inserted bearing receivers 17, 18.
  • a motor rotor 19 is arranged with regard to a drive in the motor / gear compartment 6. The first displacement body shaft 2 thereby forms at the same time the motor shaft.
  • the associated motor stator 20 provided surrounding the arrangement area of the motor rotor 19 is arranged. It can, according to a standard procedure in standard motors, be shrunk into the housing part 6 or be installed in the housing part 6 by means of a bush in which it is shrunk.
  • the displacement body 13 is arranged with respect to the partition wall 9 opposite to the motor rotor 19.
  • the displacer 13 is arranged on the same shaft, the displacer shaft 2, and the motor 19 on the other side.
  • the displacement body shafts 2, 3 are supported not only by the first bearings 10, 11 and the second bearings 15, 16, but also by a respective third bearing 21, 22.
  • the third bearing 21, 22 is in each case by means of its own receiving part 23, 24 attached to the suction side of the housing part 4 final housing cover 25.
  • the housing cover 25 also simultaneously forms an inlet 26 of the vacuum pump 1.
  • the first and second bearings 10, 11 and 15, 16 are oil-lubricated.
  • the third bearings 21, 22 are preferably grease-lubricated.
  • an outlet 28 of the vacuum pump 1 equipped with the silencer 27 is provided below the inlet 26.
  • the displacement body 13, 14 are attached to the displacement body shafts 2, 3 interchangeable. Specifically, in each case a clamping plate 29, 30 is provided, by means of which the displacement bodies 13, 14 are clamped by means of displacer body shafts continued in the region of the displacement bodies 13, 14 in the form of tubular parts 31, 32.
  • the motor rotor 19 is interchangeably mounted on the first displacement body shaft 2, in the embodiment by means of key 33.
  • a motor cable 34 of the motor stator 20 opens into a power connection 36 on the outside of the housing part 6 by means of an oil-tight cable feedthrough 35.
  • the cable feedthrough 35 is sealed to a machined surface of the housing part 5 by means of a flat gasket 37.
  • An oil leakage to the outside is thereby effectively prevented.
  • the VerdrängerEffenseen 2, 3 provided for driving and synchronization gears 38, 39. These are also releasably secured to the displacement body shafts 2, 3. Preferably by means of a transition fit.
  • An outer diameter of the motor rotor 19 is selected to be smaller than the diameter of a through opening 40 formed in the housing partition wall 9 into which the first bearing 10 is inserted.
  • lubricant pump 41 On the outside of the outer wall 8 a here only schematically indicated lubricant pump 41 is arranged.
  • This lubricant pump 41 has a pump shaft, which is also formed here by the displacement body shaft 3.
  • the described design of the vacuum pump 1 also allows the formation of a pump kit on the manufacturer side in a simple manner. This with regard to different pumping speeds and / or different drive power.
  • displacement body shafts 2, 3, other (longer or shorter building) displacement body 13, 14 With otherwise unchanged displacement body shafts 2, 3, other (longer or shorter building) displacement body 13, 14 are mounted. This can be borne by a corresponding excess length and related axial clearance in the working space 5, based on a smallest version within the kit.
  • the different drive power can initially be achieved via different operating speeds.
  • stator / rotor diameter and / or the stator / rotor length can also be achieved in addition or alternatively by modifying the stator / rotor diameter and / or the stator / rotor length. All other components can be unchanged despite the different pump parts mentioned. All disclosed features are essential to the invention.
  • the disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application.
  • the subclaims characterize in their optional sibling version independent inventive development of the prior art, in particular to make on the basis of these claims divisional applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne une pompe à vide (1), en particulier une pompe à vis, présentant deux arbres de corps de déplacement (2, 3) couplés pour les besoins de l'entraînement, entraînant des corps de déplacement et un moteur équipé d'un rotor de moteur (19), d'un arbre de moteur (2) et d'un stator de moteur (20). Selon l'invention, un carter de pompe est divisé en une chambre de travail (5), laquelle comporte les corps de déplacement (13, 14), et en une chambre de moteur/d'engrenage (7), lesquelles chambres sont en outre séparées par une cloison (9) traversée par les arbres de corps de déplacement (2, 3). L'invention vise à mettre au point une pompe à vide, en particulier une pompe à vis offrant des conditions de stockage avantageuses tout en présentant une structure compacte et peu onéreuse. A cet effet, l'arbre de moteur (2) réalisé également en tant qu'un des arbres de corps de déplacement (2, 3), sur lequel est fixé le rotor de moteur (19), est logé dans la cloison (9), et le corps de déplacement (13) entraîné par ledit arbre de corps de déplacement est disposé de manière à faire face au rotor de moteur (19) par rapport à la cloison (9), les arbres de corps de déplacement (2, 3) étant respectivement logés également dans une paroi de chambre de travail formant une paroi extérieure.
PCT/EP2011/068248 2010-10-27 2011-10-19 Pompe à vide WO2012055734A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013535363A JP2013541669A (ja) 2010-10-27 2011-10-19 真空ポンプ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010060199 2010-10-27
DE102010060199.3 2010-10-27

Publications (2)

Publication Number Publication Date
WO2012055734A2 true WO2012055734A2 (fr) 2012-05-03
WO2012055734A3 WO2012055734A3 (fr) 2013-05-10

Family

ID=45688076

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/068248 WO2012055734A2 (fr) 2010-10-27 2011-10-19 Pompe à vide

Country Status (3)

Country Link
JP (1) JP2013541669A (fr)
DE (1) DE102011054607A1 (fr)
WO (1) WO2012055734A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9624927B2 (en) 2010-12-14 2017-04-18 Gebr. Becker Gmbh Vacuum pump

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013207269A1 (de) 2013-04-22 2014-10-23 Pfeiffer Vacuum Gmbh Statorelement für eine Holweckpumpstufe, Vakuumpumpe mit einer Holweckpumpstufe und Verfahren zur Herstellung eines Statorelements für eine Holweckpumpstufe
DE102013020535A1 (de) * 2013-12-12 2015-06-18 Gea Refrigeration Germany Gmbh Verdichter
JP6374665B2 (ja) * 2014-02-12 2018-08-15 北越工業株式会社 増速型スクリュ圧縮機
EP3499041B1 (fr) * 2017-12-15 2020-07-01 Pfeiffer Vacuum Gmbh Pompe à vide à vis

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994029596A1 (fr) 1993-06-04 1994-12-22 Sihi Gmbh & Co. Kg. Machines volumetriques a synchronisation electronique du moteur
WO2001079701A1 (fr) 2000-04-18 2001-10-25 Leybold Vakuum Gmbh Pompe a vide ayant deux rotors qui cooperent

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19745616A1 (de) * 1997-10-10 1999-04-15 Leybold Vakuum Gmbh Gekühlte Schraubenvakuumpumpe
DE19748385A1 (de) * 1997-11-03 1999-05-06 Peter Frieden Trockenlaufender Schraubenverdichter oder Vakuumpumpe
DE19820523A1 (de) * 1998-05-08 1999-11-11 Peter Frieden Schraubenspindel-Vakuumpumpe mit Rotorkühlung
US6652250B2 (en) * 2000-10-16 2003-11-25 Kobe Steel, Ltd. Screw compressor having intermediate shaft bearing
GB2376505B (en) * 2001-06-11 2003-12-17 Compair Uk Ltd Improvements in screw compressors
JP3796210B2 (ja) * 2002-11-01 2006-07-12 株式会社神戸製鋼所 スクリュ圧縮機
US20070241627A1 (en) * 2006-04-12 2007-10-18 Sullair Corporation Lubricant cooled integrated motor/compressor design
TWI438342B (zh) * 2006-07-28 2014-05-21 Lot Vacuum Co Ltd 具有魯式與螺旋轉子之複合型乾式真空幫浦

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994029596A1 (fr) 1993-06-04 1994-12-22 Sihi Gmbh & Co. Kg. Machines volumetriques a synchronisation electronique du moteur
US5767635A (en) 1993-06-04 1998-06-16 Sihi Gmbh & Co. Kg Displacement machine with electronic motor synchronization
WO2001079701A1 (fr) 2000-04-18 2001-10-25 Leybold Vakuum Gmbh Pompe a vide ayant deux rotors qui cooperent
US20030152468A1 (en) 2000-04-18 2003-08-14 Manfred Behling Vacuum pump with two co-operating rotors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9624927B2 (en) 2010-12-14 2017-04-18 Gebr. Becker Gmbh Vacuum pump

Also Published As

Publication number Publication date
DE102011054607A1 (de) 2012-06-21
WO2012055734A3 (fr) 2013-05-10
JP2013541669A (ja) 2013-11-14

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