EP1477681B1 - Flüssigkeitsringgaspumpe - Google Patents

Flüssigkeitsringgaspumpe Download PDF

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Publication number
EP1477681B1
EP1477681B1 EP03011218A EP03011218A EP1477681B1 EP 1477681 B1 EP1477681 B1 EP 1477681B1 EP 03011218 A EP03011218 A EP 03011218A EP 03011218 A EP03011218 A EP 03011218A EP 1477681 B1 EP1477681 B1 EP 1477681B1
Authority
EP
European Patent Office
Prior art keywords
liquid ring
housing part
housing
ring pump
pump 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
EP03011218A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1477681A1 (de
Inventor
Bernd Wenckebach
Silke Heetsch
Alfons Dr. Jünemann
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.)
Sterling Fluid Systems Germany GmbH
Sterling Fluid Systems GmbH
Original Assignee
Sterling Fluid Systems Germany GmbH
Sterling Fluid Systems 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 Sterling Fluid Systems Germany GmbH, Sterling Fluid Systems GmbH filed Critical Sterling Fluid Systems Germany GmbH
Priority to DE50304745T priority Critical patent/DE50304745D1/de
Priority to ES03011218T priority patent/ES2271420T3/es
Priority to AT03011218T priority patent/ATE337489T1/de
Priority to DK03011218T priority patent/DK1477681T3/da
Priority to PT03011218T priority patent/PT1477681E/pt
Priority to EP03011218A priority patent/EP1477681B1/de
Priority to TW093112243A priority patent/TWI273173B/zh
Priority to CA 2525480 priority patent/CA2525480C/en
Priority to JP2006529736A priority patent/JP2006529015A/ja
Priority to US10/557,304 priority patent/US7563075B2/en
Priority to PCT/EP2004/004743 priority patent/WO2004102003A1/de
Priority to CNB2004800134706A priority patent/CN100482946C/zh
Priority to MYPI20041818A priority patent/MY136591A/en
Publication of EP1477681A1 publication Critical patent/EP1477681A1/de
Priority to NO20055277A priority patent/NO20055277L/no
Application granted granted Critical
Publication of EP1477681B1 publication Critical patent/EP1477681B1/de
Priority to HK06111848.5A priority patent/HK1091251A1/xx
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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • 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
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/005—Details concerning the admission or discharge
    • F04C19/007—Port members in the form of side plates
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/21—Manufacture essentially without removing material by casting
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding
    • 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
    • F04C2240/30—Casings or housings

Definitions

  • the invention relates to a liquid ring gas pump having a first housing part, which encloses two working spaces radially, in each of which an eccentrically rotatably mounted impeller is arranged, with second and third housing parts, which complete the first housing part and the pump on both sides and channels or chambers for supply and Having discharge of the delivered gas, with at least one of second leading to the third housing part connecting channel and with the working spaces in the axial direction limiting control discs.
  • an impeller rotates within an eccentrically rotating fluid ring.
  • the liquid ring more or less immersed in the cells formed between the wings of the impeller.
  • the free volume in the impeller cells is alternately increased and decreased.
  • the suction opening through which the gas to be delivered is sucked into the cells, is located in the front side in a control disk.
  • Liquid ring gas pumps are used both as a vacuum pump, where the delivery gas is compressed from a negative pressure to about atmospheric pressure, as well as a compressor in which the delivery gas is compressed from atmospheric to an overpressure.
  • Liquid ring gas pumps are available as single-stage and multi-stage versions. Single-stage liquid ring gas pumps can be used as a vacuum pump in the upper rough vacuum or as a compressor due to the lower compression ratio. Multi-stage machines have their preferred use as a vacuum pump in the lower pressure range of the vacuum.
  • the work spaces in which the impeller rotates and the liquid ring is formed, are limited axially on one side or on both sides by a control disk.
  • these work spaces with impeller and control discs are arranged axially in a corresponding number one behind the other.
  • a liquid ring gas pump (cf, for example, DE 27 14 475 A) consists of a multiplicity of components which are arranged in the axial direction against each other during pump assembly.
  • the bearing surfaces of the individual components are simultaneously sealing surfaces of the machine from the pump interior to the environment.
  • Such a conventional liquid ring gas pump has in two-stage design seven axial sealing surfaces (DE 27 14 475). Consequently, the assembly is expensive and the construction expensive and also has the disadvantage of a variety of surfaces to be sealed, in particular a greater risk of early leaking in operation.
  • the object of the invention is to provide a liquid ring gas pump of the type mentioned, in which the number of items and in particular the number of sealing surfaces is greatly reduced to the outside.
  • the first housing part is formed in one piece, and has an integrally formed with the first housing part intermediate wall for receiving inner control discs between the two working spaces.
  • the intermediate wall may comprise at least one channel for passing the conveyed gas .
  • the invention is applicable to two-stage liquid ring gas pumps.
  • the first housing part has not more than two surfaces connected to the work spaces, with which it adjoins other housing parts or other attachments.
  • the construction of the pump is further simplified if the first housing part has connections for emptying and / or emptying, cavitation protection and suction-side ventilation.
  • the housing parts may be formed in an advantageous embodiment as a cast construction. In another advantageous embodiment, the housing parts are designed as a welded construction.
  • a particularly simple assembly is possible if the first housing part has fastening elements for axial clamping with the second and third housing parts.
  • the construction according to the invention is characterized by a low number of components and few sealing surfaces to the outside. This results in significant advantages in the manufacturing and assembly process as well as in the reliability of the novel liquid ring gas pump. A particular advantage is also that the second and third housing parts can be identical, which also reduces the manufacturing cost and storage costs for spare parts.
  • FIG. 1 shows in cross section a conventional liquid ring gas pump.
  • In workrooms A are eccentrically mounted on a shaft B impellers C.
  • the work spaces A are partially with a liquid, in particular water filled, so that the cells between the wings of the impellers due to the liquid ring enlarge and reduce, whereby the pumping action is achieved.
  • At the end faces of the impellers C are control discs D, in the embodiment of Figure 1 so four such control discs.
  • Housing parts E limit the work spaces in the radial direction to the outside.
  • FIG. 1 shows in cross section a conventional liquid ring gas pump.
  • the two-stage pump according to the invention which is shown in Figure 2, also has two impellers 1, which are mounted on a shaft 11 and rotate in the eccentric working spaces 16.
  • At the outer end faces of the impellers 1 are control discs 2;
  • In the middle between the impellers 1 are control discs 3, wherein the control discs are provided with suitable openings through which enters the gas to be pumped into the working spaces 16 and exits.
  • Fig. 2 there is shown a connecting passage 13 connecting the suction port 14 of the left (second) stage with the pressure port 15 of the right (first) stage, whereby a partial flow of the conveying gas from the right (first) stage to the left (second) stage is directed.
  • the respective other opening of the middle control discs 3 is covered by the middle wall 8 and thus functionless.
  • This middle wall 8 is part of a first housing part 5, which surrounds the working spaces 16.
  • This first Housing part 5 has a further connecting channel 7 for the gas flows within the pump.
  • a second partial flow of the delivery gas is passed from the pressure port 17 of the right (first) stage to the suction port 18 of the left (second) stage.
  • the outer wall 6, which limits the working space 16, the intermediate wall 8 and the connecting channel 7 are integrally formed. Further components are the left and right of the first housing part 1 arranged second and third housing parts 4, which may be identical. The only sealing surfaces to the outside are the sealing surfaces between the first housing and the second housing 4. These sealing surfaces are designated 9. With 19 screws are designated by which the housing parts 1, 4 are fastened together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • External Artificial Organs (AREA)
  • Gyroscopes (AREA)
EP03011218A 2003-05-16 2003-05-16 Flüssigkeitsringgaspumpe Expired - Lifetime EP1477681B1 (de)

Priority Applications (15)

Application Number Priority Date Filing Date Title
DE50304745T DE50304745D1 (de) 2003-05-16 2003-05-16 Flüssigkeitsringgaspumpe
ES03011218T ES2271420T3 (es) 2003-05-16 2003-05-16 Bomba de gas hidrorrotativa.
AT03011218T ATE337489T1 (de) 2003-05-16 2003-05-16 Flüssigkeitsringgaspumpe
DK03011218T DK1477681T3 (da) 2003-05-16 2003-05-16 Væskeringsgaspumpe
PT03011218T PT1477681E (pt) 2003-05-16 2003-05-16 Bomba de gás com anel de líquido
EP03011218A EP1477681B1 (de) 2003-05-16 2003-05-16 Flüssigkeitsringgaspumpe
TW093112243A TWI273173B (en) 2003-05-16 2004-04-30 Liquid ring gas pump
JP2006529736A JP2006529015A (ja) 2003-05-16 2004-05-04 液封ポンプ
CA 2525480 CA2525480C (en) 2003-05-16 2004-05-04 Liquid ring pump
US10/557,304 US7563075B2 (en) 2003-05-16 2004-05-04 Liquid ring pump
PCT/EP2004/004743 WO2004102003A1 (de) 2003-05-16 2004-05-04 Flüssigkeitsringgaspumpe
CNB2004800134706A CN100482946C (zh) 2003-05-16 2004-05-04 液环式气泵
MYPI20041818A MY136591A (en) 2003-05-16 2004-05-14 Liquid ring gas pump
NO20055277A NO20055277L (no) 2003-05-16 2005-11-09 Ringformet vaeskepumpe
HK06111848.5A HK1091251A1 (en) 2003-05-16 2006-10-26 Liquid ring pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03011218A EP1477681B1 (de) 2003-05-16 2003-05-16 Flüssigkeitsringgaspumpe

Publications (2)

Publication Number Publication Date
EP1477681A1 EP1477681A1 (de) 2004-11-17
EP1477681B1 true EP1477681B1 (de) 2006-08-23

Family

ID=33016918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03011218A Expired - Lifetime EP1477681B1 (de) 2003-05-16 2003-05-16 Flüssigkeitsringgaspumpe

Country Status (15)

Country Link
US (1) US7563075B2 (no)
EP (1) EP1477681B1 (no)
JP (1) JP2006529015A (no)
CN (1) CN100482946C (no)
AT (1) ATE337489T1 (no)
CA (1) CA2525480C (no)
DE (1) DE50304745D1 (no)
DK (1) DK1477681T3 (no)
ES (1) ES2271420T3 (no)
HK (1) HK1091251A1 (no)
MY (1) MY136591A (no)
NO (1) NO20055277L (no)
PT (1) PT1477681E (no)
TW (1) TWI273173B (no)
WO (1) WO2004102003A1 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2507089A (en) 2012-10-18 2014-04-23 Ccl Group Ltd An anchor having expanded sections in multi wired tendons
AU2015310560B2 (en) * 2014-09-04 2019-02-21 Scoprega S.P.A. Volumetric compressor
GB2571972B (en) * 2018-03-14 2021-01-20 Edwards Tech Vacuum Engineering Qingdao Co Ltd Method and apparatus related to servicing of liquid ring pumps

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1662250A (en) * 1926-06-11 1928-03-13 Irving C Jennings Method and apparatus relating to motor-driven pumps
US1699327A (en) * 1926-08-02 1929-01-15 Jr Augustus C Durdin Displacement apparatus
US2416538A (en) * 1944-11-04 1947-02-25 Arthur J Nelson Hydroturbine pump
DE1428243A1 (de) * 1962-10-17 1969-07-10 Siemen & Hinsch Gmbh Fluessigkeitsring-Gaspumpe
IT1085211B (it) * 1976-04-07 1985-05-28 Gen Signal Corp Pompa ad anello liquido
DE3111538A1 (de) * 1981-03-24 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Fluessigkeitsringpumpe mit einer zwischen dem laufradgehaeuse und dem mit anschlussstutzen versehenen deckel angeordneten steuerscheibe
JPS61167196A (ja) * 1985-08-21 1986-07-28 Nakamura Suikan:Kk １作動側気口型水リングポンプ
US4747752A (en) * 1987-04-20 1988-05-31 Somarakis, Inc. Sealing and dynamic operation of a liquid ring pump
EP0367845B1 (de) * 1988-11-07 1991-12-18 Siemens Aktiengesellschaft Flüssigkeitsringpumpe
JPH086698B2 (ja) * 1991-07-18 1996-01-29 株式会社荏原製作所 液封式ポンプ
DE19758340A1 (de) * 1997-12-22 1999-07-08 Gardner Denver Wittig Gmbh Mehrflutige Flüssigkeitsringpumpe

Also Published As

Publication number Publication date
CA2525480A1 (en) 2004-11-25
ATE337489T1 (de) 2006-09-15
DK1477681T3 (da) 2007-01-02
TWI273173B (en) 2007-02-11
DE50304745D1 (de) 2006-10-05
TW200506214A (en) 2005-02-16
CA2525480C (en) 2008-08-05
ES2271420T3 (es) 2007-04-16
NO20055277D0 (no) 2005-11-09
MY136591A (en) 2008-10-31
WO2004102003A1 (de) 2004-11-25
NO20055277L (no) 2005-12-02
JP2006529015A (ja) 2006-12-28
HK1091251A1 (en) 2007-01-12
US7563075B2 (en) 2009-07-21
US20070065298A1 (en) 2007-03-22
EP1477681A1 (de) 2004-11-17
PT1477681E (pt) 2006-12-29
CN100482946C (zh) 2009-04-29
CN1791752A (zh) 2006-06-21

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