EP0952351A1 - Verdrängermaschine - Google Patents

Verdrängermaschine Download PDF

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Publication number
EP0952351A1
EP0952351A1 EP98810350A EP98810350A EP0952351A1 EP 0952351 A1 EP0952351 A1 EP 0952351A1 EP 98810350 A EP98810350 A EP 98810350A EP 98810350 A EP98810350 A EP 98810350A EP 0952351 A1 EP0952351 A1 EP 0952351A1
Authority
EP
European Patent Office
Prior art keywords
rotor
bearings
displacement machine
working
rotors
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Withdrawn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
EP98810350A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ulrich Becher
Andreas Basteck
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.)
Ateliers Busch SA
Original Assignee
Ateliers Busch SA
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 Ateliers Busch SA filed Critical Ateliers Busch SA
Priority to EP98810350A priority Critical patent/EP0952351A1/de
Priority to JP2000544941A priority patent/JP2002512345A/ja
Priority to AU29189/99A priority patent/AU2918999A/en
Priority to US09/647,886 priority patent/US6354823B1/en
Priority to KR1020007011441A priority patent/KR100681477B1/ko
Priority to DK99910073T priority patent/DK1073845T3/da
Priority to ES99910073T priority patent/ES2182495T3/es
Priority to PCT/CH1999/000137 priority patent/WO1999054627A1/de
Priority to AT99910073T priority patent/ATE220448T1/de
Priority to EP99910073A priority patent/EP1073845B1/de
Priority to PT99910073T priority patent/PT1073845E/pt
Priority to CN99805268A priority patent/CN1095040C/zh
Priority to SI9930095T priority patent/SI1073845T1/xx
Priority to CA002328718A priority patent/CA2328718C/en
Priority to DE59901994T priority patent/DE59901994D1/de
Publication of EP0952351A1 publication Critical patent/EP0952351A1/de
Priority to HK01107812A priority patent/HK1037020A1/xx
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/086—Carter
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F04C2220/12—Dry running

Definitions

  • the invention relates to a positive displacement machine, in particular for use as a pump, with a working space formed in a housing, which is delimited by two end walls and a jacket and is accessible via an inlet and an outlet for a working medium and with at least one movably arranged in the housing.
  • the rotor dividing the work area and with a guide gear for rotor control and a drive device located outside the work area.
  • Such displacement machines are known in many different types. They can be designed and used both for supplying a pressure medium, for example air, and as vacuum pumps. In many areas of application for such machines, particularly in the packaging and food industries, the pressure medium must not be contaminated with oil. It is therefore essential that the machines do without oil in the work area.
  • the problem has been solved by geometries which allow the rotors to engage without contact, so that they do not have to be lubricated with oil.
  • the bearing of the rotors is more problematic, as will be explained in the following using some typical examples.
  • a second type of displacement machine works with hydrodynamic or hydrostatic bearings.
  • there are of course sealing problems as soon as the working medium must not be contaminated with lubricants. Overcoming these sealing problems requires increased construction costs, which undesirably increases the weight of the machine.
  • An example of a machine with hydrostatic bearings is described in European patent application EP 0 376 373 A1. In this type of displacement machine, the weight and the construction effort are increased even further by the devices necessary for applying the lubricant pressure.
  • a third type of displacement machine is equipped with magnetic bearings for the rotor shafts.
  • Such bearings already have a relatively high weight. Because of the relatively low forces that can be absorbed by magnetic bearings, the rotors have to be driven by separate, electronically synchronized motors and cannot be synchronized with a guide gear. In the event of a failure of the synchronizing circuit, however, a mechanical emergency synchronization gear is often provided.
  • a fourth, widespread type of displacement machine works with rolling bearings that are conventionally lubricated and dynamically sealed against the work area.
  • the rotors are supported on both sides, as is shown, for example, in German Patent DE 37 06 588 C1.
  • the support length between the bearings is increased by the seals required to seal them.
  • the core diameter of the rotors must also be made correspondingly larger. This increases the size and weight of the machine.
  • the present invention has for its object to provide a positive displacement machine of the type mentioned, which can be manufactured with less effort and less weight than known generic positive displacement machines and which are operated in particular without special lubricants for the bearings.
  • This object is achieved in that the rotor or the rotors is or are at least partially supported within the working space and that the bearing or the bearings arranged within the working space are accessible to the working medium and are designed as roller bearings made of ceramic materials or are, whereby a lubricant-free operation of the displacement machine is possible.
  • the machine according to the invention can therefore be operated without special lubricants for the bearings and is therefore a Contamination of the working medium with lubricant is practically impossible.
  • the embodiment of the invention specified in claim 2 eliminates the need for sealing on both sides, thereby making it possible to reduce the spans between the bearings. This also reduces the effort involved in building the machine, as well as its weight and installation space.
  • the particularly preferred embodiment of the displacement machine according to the invention has a simple, double-sided mounting of the rotors while reducing the spans as well as operation without suction-side dynamic seals and a general reduction in installation space. Dispensing with seals on the suction side is particularly advantageous in vacuum pumps because failure of such a seal would lead to contamination of the working medium or breakdown of the vacuum in a machine with conventionally lubricated bearings.
  • the embodiment according to claim 4 also enables lubricant-free operation of the machine and a further reduction in the rotor spans.
  • the dynamic shaft seals are accessible and exchangeable from the outside in this embodiment.
  • FIG. 1 shows a longitudinal section through a displacement machine according to the prior art, which is intended for use as a pump.
  • a working space 2 is formed, which has two end walls 3, 4 and a coat 5 is limited.
  • the working medium for example air
  • Two rotors 8, 9 provided on their jacket in a known manner with interlocking helical profiles are rotatably arranged in the working space.
  • a guide gear 10, which is arranged outside the working area and driven by a drive device 11, ensures that the two rotors rotate in the opposite direction without contact.
  • the rotors 8 and 9 are each supported by two conventional roller bearings 12 and 13 in the end walls 3 and 4 and sealed against the working space 2 with seals 14 and 15.
  • the span that results from this arrangement is denoted by L1 in FIG.
  • the rotors 8 and 9 are supported in the working space 2 by roller bearings 16 and 17.
  • roller bearings 16 and 17 are made of ceramic materials that achieve a long service life without lubrication or with lubrication only through the working medium.
  • the rotors are thus mounted in the working space, which results in the span L2 which is considerably smaller than in the prior art shown in FIG.
  • the work space 2 only needs to be sealed on the side of the guide gear 10, which in the present example is achieved by the dynamic seal 18 arranged on the side of the bearing 17 facing away from the work space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Rolling Contact Bearings (AREA)
EP98810350A 1998-04-21 1998-04-21 Verdrängermaschine Withdrawn EP0952351A1 (de)

Priority Applications (16)

Application Number Priority Date Filing Date Title
EP98810350A EP0952351A1 (de) 1998-04-21 1998-04-21 Verdrängermaschine
PCT/CH1999/000137 WO1999054627A1 (de) 1998-04-21 1999-04-01 Verdrängermaschine
PT99910073T PT1073845E (pt) 1998-04-21 1999-04-01 Maquina volumetrica
US09/647,886 US6354823B1 (en) 1998-04-21 1999-04-01 Displacement machine having a ceramic rolling bearing
KR1020007011441A KR100681477B1 (ko) 1998-04-21 1999-04-01 배출장치
DK99910073T DK1073845T3 (da) 1998-04-21 1999-04-01 Fortrængningsmaskine
ES99910073T ES2182495T3 (es) 1998-04-21 1999-04-01 Maquina volumetrica.
JP2000544941A JP2002512345A (ja) 1998-04-21 1999-04-01 容積形装置
AT99910073T ATE220448T1 (de) 1998-04-21 1999-04-01 Verdrängermaschine
EP99910073A EP1073845B1 (de) 1998-04-21 1999-04-01 Verdrängermaschine
AU29189/99A AU2918999A (en) 1998-04-21 1999-04-01 Positive displacement machine
CN99805268A CN1095040C (zh) 1998-04-21 1999-04-01 压排机
SI9930095T SI1073845T1 (en) 1998-04-21 1999-04-01 Positive displacement machine
CA002328718A CA2328718C (en) 1998-04-21 1999-04-01 Positive displacement machine
DE59901994T DE59901994D1 (de) 1998-04-21 1999-04-01 Verdrängermaschine
HK01107812A HK1037020A1 (en) 1998-04-21 2001-11-07 Positive displacement machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810350A EP0952351A1 (de) 1998-04-21 1998-04-21 Verdrängermaschine

Publications (1)

Publication Number Publication Date
EP0952351A1 true EP0952351A1 (de) 1999-10-27

Family

ID=8236048

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98810350A Withdrawn EP0952351A1 (de) 1998-04-21 1998-04-21 Verdrängermaschine
EP99910073A Expired - Lifetime EP1073845B1 (de) 1998-04-21 1999-04-01 Verdrängermaschine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP99910073A Expired - Lifetime EP1073845B1 (de) 1998-04-21 1999-04-01 Verdrängermaschine

Country Status (15)

Country Link
US (1) US6354823B1 (ko)
EP (2) EP0952351A1 (ko)
JP (1) JP2002512345A (ko)
KR (1) KR100681477B1 (ko)
CN (1) CN1095040C (ko)
AT (1) ATE220448T1 (ko)
AU (1) AU2918999A (ko)
CA (1) CA2328718C (ko)
DE (1) DE59901994D1 (ko)
DK (1) DK1073845T3 (ko)
ES (1) ES2182495T3 (ko)
HK (1) HK1037020A1 (ko)
PT (1) PT1073845E (ko)
SI (1) SI1073845T1 (ko)
WO (1) WO1999054627A1 (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI277694B (en) 2002-02-28 2007-04-01 Teijin Seiki Co Ltd Vacuum exhausting apparatus
JP4321206B2 (ja) * 2003-10-17 2009-08-26 株式会社デンソー 気体圧縮装置
BE1016733A3 (nl) * 2005-08-25 2007-05-08 Atlas Copco Airpower Nv Verbeterde lagedruk schroefcompressor.
CN100360804C (zh) * 2005-11-04 2008-01-09 浙江工业大学 一种外环流活塞泵
JP4670729B2 (ja) * 2006-05-08 2011-04-13 株式会社デンソー 気体圧縮機
DE102006035783A1 (de) * 2006-08-01 2008-02-07 Grasso Gmbh Refrigeration Technology Schraubenverdichter
US20090098003A1 (en) * 2007-10-11 2009-04-16 General Electric Company Multiphase screw pump
DE102010019635B4 (de) * 2010-05-06 2014-04-03 Multivac Sepp Haggenmüller Gmbh & Co. Kg Siegelstation für eine Verpackungsmaschine
CN103047142A (zh) * 2012-12-29 2013-04-17 中国科学院沈阳科学仪器股份有限公司 一种干气密封螺杆真空泵
GB2558954B (en) * 2017-01-24 2019-10-30 Edwards Ltd Pump sealing
RU208092U1 (ru) * 2021-02-09 2021-12-01 Акционерное общество "Научно-производственное предприятие "Рубин" (АО "НПП "Рубин") Газодувка объемная двухроторная трехлопастная

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1737A (fr) 1890-01-17 1890-04-30 Cie Dubail Monnin Frossard Et Perfectionnement aux méchanismes de remontoirs des montres de poche
DE3124247C1 (de) * 1981-06-19 1983-06-01 Boge Kompressoren Otto Boge Gmbh & Co Kg, 4800 Bielefeld Schraubenverdichter
JPH0240201A (ja) * 1988-07-29 1990-02-09 Tsumura & Co ロータリー・アトマイザー
EP0376373A1 (en) 1988-12-29 1990-07-04 SKF Industrial Trading & Development Co, B.V. Screw compressor
EP0426013A2 (en) * 1989-11-01 1991-05-08 The Spectranetics Corporation Unlubricated bearings for gas lasers
JPH04114360A (ja) * 1990-09-05 1992-04-15 Fujitsu Ltd ディスク装置
JPH06313433A (ja) * 1993-04-30 1994-11-08 Shinagawa Refract Co Ltd セラミック軸受
DE19513380A1 (de) 1995-04-08 1996-10-10 Gutehoffnungshuette Man Abdichtung, Lagerung und Antrieb der Rotoren eines trockenlaufenden Schraubenrotorverdichters
DE19522551A1 (de) 1995-06-21 1997-01-02 Sihi Ind Consult Gmbh Zweiwellen-Verdrängermaschine

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Publication number Priority date Publication date Assignee Title
US1751703A (en) * 1927-11-03 1930-03-25 Daniel D Long Pump
US2633083A (en) * 1948-09-21 1953-03-31 Barnes Mfg Co Pump
US2705922A (en) * 1953-04-06 1955-04-12 Dresser Ind Fluid pump or motor of the rotary screw type
JPH0718421B2 (ja) * 1984-10-29 1995-03-06 株式会社日立製作所 回転式圧縮機の異常検出装置
US4674960A (en) * 1985-06-25 1987-06-23 Spectra-Physics, Inc. Sealed rotary compressor
DE3706588C2 (de) 1987-02-26 1993-12-02 Mannesmann Ag Antriebseinrichtung für Rotationskolbenverdichter
JPH01275914A (ja) * 1988-04-28 1989-11-06 Ulvac Corp 真空中駆動機構
JP2537712B2 (ja) * 1991-07-10 1996-09-25 株式会社荏原製作所 スクリュ―形真空ポンプ
JP3144033B2 (ja) * 1992-03-02 2001-03-07 日本精工株式会社 転がり軸受装置
US5269667A (en) * 1993-02-24 1993-12-14 Ingersoll-Rand Company Removabe discharge port plate for a compressor
US5580232A (en) * 1995-05-04 1996-12-03 Kobelco Compressors (America), Inc. Rotor assembly having a slip joint in the shaft assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1737A (fr) 1890-01-17 1890-04-30 Cie Dubail Monnin Frossard Et Perfectionnement aux méchanismes de remontoirs des montres de poche
DE3124247C1 (de) * 1981-06-19 1983-06-01 Boge Kompressoren Otto Boge Gmbh & Co Kg, 4800 Bielefeld Schraubenverdichter
JPH0240201A (ja) * 1988-07-29 1990-02-09 Tsumura & Co ロータリー・アトマイザー
EP0376373A1 (en) 1988-12-29 1990-07-04 SKF Industrial Trading & Development Co, B.V. Screw compressor
EP0426013A2 (en) * 1989-11-01 1991-05-08 The Spectranetics Corporation Unlubricated bearings for gas lasers
JPH04114360A (ja) * 1990-09-05 1992-04-15 Fujitsu Ltd ディスク装置
JPH06313433A (ja) * 1993-04-30 1994-11-08 Shinagawa Refract Co Ltd セラミック軸受
DE19513380A1 (de) 1995-04-08 1996-10-10 Gutehoffnungshuette Man Abdichtung, Lagerung und Antrieb der Rotoren eines trockenlaufenden Schraubenrotorverdichters
DE19522551A1 (de) 1995-06-21 1997-01-02 Sihi Ind Consult Gmbh Zweiwellen-Verdrängermaschine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 197 (C - 0712) 23 April 1990 (1990-04-23) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 368 (P - 1398) 7 August 1992 (1992-08-07) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 002 31 March 1995 (1995-03-31) *

Also Published As

Publication number Publication date
KR20010042719A (ko) 2001-05-25
HK1037020A1 (en) 2002-01-25
SI1073845T1 (en) 2002-10-31
ES2182495T3 (es) 2003-03-01
EP1073845A1 (de) 2001-02-07
AU2918999A (en) 1999-11-08
KR100681477B1 (ko) 2007-02-09
DE59901994D1 (de) 2002-08-14
JP2002512345A (ja) 2002-04-23
CA2328718A1 (en) 1999-10-28
DK1073845T3 (da) 2002-09-23
CN1298474A (zh) 2001-06-06
CA2328718C (en) 2008-02-19
CN1095040C (zh) 2002-11-27
PT1073845E (pt) 2002-11-29
WO1999054627A1 (de) 1999-10-28
ATE220448T1 (de) 2002-07-15
US6354823B1 (en) 2002-03-12
EP1073845B1 (de) 2002-07-10

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