EP0367845B1 - Flüssigkeitsringpumpe - Google Patents

Flüssigkeitsringpumpe Download PDF

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Publication number
EP0367845B1
EP0367845B1 EP88118520A EP88118520A EP0367845B1 EP 0367845 B1 EP0367845 B1 EP 0367845B1 EP 88118520 A EP88118520 A EP 88118520A EP 88118520 A EP88118520 A EP 88118520A EP 0367845 B1 EP0367845 B1 EP 0367845B1
Authority
EP
European Patent Office
Prior art keywords
housing cover
pressure
baffle
liquid ring
control disc
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
EP88118520A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0367845A1 (de
Inventor
Siegfried Dipl.-Ing. Schönwald
Robert Seufert
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP88118520A priority Critical patent/EP0367845B1/de
Priority to DE8888118520T priority patent/DE3867068D1/de
Priority to US07/429,765 priority patent/US4992028A/en
Priority to JP1989127205U priority patent/JPH0264782U/ja
Publication of EP0367845A1 publication Critical patent/EP0367845A1/de
Application granted granted Critical
Publication of EP0367845B1 publication Critical patent/EP0367845B1/de
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
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing
    • 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

Definitions

  • the invention relates to a liquid ring pump with a pump wheel rotatably mounted in its pump housing according to the preamble of claim 1.
  • Such a liquid ring pump is known from EP-PS 0 138 182.
  • a very disturbing, roaring noise occurs in particular at medium suction pressures, which penetrates to the outside via the pressure or outlet connection. This noise occurs at the outlet openings of the control disc, through which the gas enclosed and compressed in the blade cells of the pump wheel is pushed out rhythmically.
  • a rotary piston compressor is known from US-A-4 636 154. So that there is no oil hammer between the outlet valve closing the outlet valve and the accumulated lubricating oil in such a compressor due to the lubricating oil introduced to lubricate the rolling piston and usually collects in the muffler connected to the outlet opening of the compressor, there is a drain opening in a housing wall of the muffler the oil provided. In order to guide the oil from the outlet opening to the corresponding housing wall, an axial wall projection having an oblique wall profile is provided following the outlet opening. From this wall protrusion, the oil reaches the housing wall and then exits the silencer via the outlet opening.
  • the invention has for its object to design a liquid ring pump of the generic type so that the outward noise is significantly reduced.
  • the object is achieved according to the invention by the features specified in the characterizing part of claim 1.
  • the desired deflection of the operating fluid is achieved by the guide surfaces extending axially into the pressure chamber. This deflection of the operating fluid creates a finely distributed fluid curtain, which has a very sound-absorbing effect. This ensures that the pumped gas does not form a passage for the noise that is not satisfied with a sufficient liquid curtain.
  • Undesired throttling losses of the compressed gas are kept small by deflecting the gas as little as possible.
  • one guide surface is integrally formed on the wall of the housing cover and the further guide surface is attached to the housing cover as a separate component. This avoids undercuts, which increase the cost of manufacturing the housing cover using the casting process.
  • a simple attachment of the further guide surface results from the insertion of this strip-shaped guide surface into holding slots which extend in the axial direction on the housing cover.
  • This additional guide surface is clamped in the holding slots in that it consists of an elastic plastic strip, the length of which is slightly greater than the straight line distance between the base surfaces of the holding slots.
  • the plastic strip must be arched somewhat as a result of this length dimension when it is inserted into the holding slots, so that it is pressed against the base surfaces of the holding slots by the resulting clamping force and is thus clamped in these.
  • a control disk 5 is arranged between the pump housing 1 and a housing cover 6 which closes the pump housing 1 on this side.
  • a suction and a pressure nozzle 7 and 8 are integrally formed on the housing cover 6.
  • the suction nozzle 7 opens into a suction chamber 9 which is delimited by the housing cover 6 and the control disk 5.
  • the opening 10 of the pressure nozzle 8 is connected to a pressure chamber 11 which is likewise delimited by the housing cover 6 and the control disk 5.
  • the suction chamber 9 and the pressure chamber 11 are delimited in terms of pressure from one another by a center web 12 which is integrally formed on the housing cover 6 and, if appropriate, with the interposition of a sealing element on the control disk 5.
  • the control disk 5 has at least one inlet and one outlet opening.
  • the inlet opening 13 connected to the suction chamber 9 is shown in broken lines.
  • the outlet bores 14 can be closed in a known manner by valves or covered by valve tongues.
  • a guide surface 16 extending in the axial direction is formed on the inside of the wall 6a of the housing cover 6.
  • a further guide surface 17 is designed as a separate component (for example elastic plastic strip) and is provided in the holding slots 19 and 20 provided on the central web 12 and on a holding web 18 which projects beyond a guide surface 16 in the axial direction plugged in.
  • the further guide surface 17 is expediently designed as an elastic plastic strip and its axial length is somewhat larger than the straight-line distance between the base surfaces of the two holding slots 19 and 20 be bent. The resulting clamping force presses the side edges of the plastic strip against the bases of the holding slots 19 and 20, so that the plastic strip is held in its position by clamping action without further fasteners.
  • the gas particles are deflected less because of their lower mass and thus less inertia and, since the two guide surfaces 16 and 17 do not overlap in the axial direction, can flow relatively straight past the guide surfaces 16 and 17 to the mouth opening 10. Your path is shown by a solid arrow 22.
  • the liquid particles cross the path of the gas particles.
  • a damping layer between the outlet bores 14 and the outlet slot 15 of the control disk 5 and the mouth opening 10 of the pressure port 8 is generated by the veil consisting of the liquid particles, which dampens the noise generated at the outlet bores 14 and the outlet slot 15 strongly.
  • the damping measures require only minimal effort. Since the gas particles are deflected only slightly, there are no significant pressure losses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
EP88118520A 1988-11-07 1988-11-07 Flüssigkeitsringpumpe Expired - Lifetime EP0367845B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP88118520A EP0367845B1 (de) 1988-11-07 1988-11-07 Flüssigkeitsringpumpe
DE8888118520T DE3867068D1 (de) 1988-11-07 1988-11-07 Fluessigkeitsringpumpe.
US07/429,765 US4992028A (en) 1988-11-07 1989-10-31 Liquid ring pump
JP1989127205U JPH0264782U (US20030204162A1-20031030-M00001.png) 1988-11-07 1989-11-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88118520A EP0367845B1 (de) 1988-11-07 1988-11-07 Flüssigkeitsringpumpe

Publications (2)

Publication Number Publication Date
EP0367845A1 EP0367845A1 (de) 1990-05-16
EP0367845B1 true EP0367845B1 (de) 1991-12-18

Family

ID=8199534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118520A Expired - Lifetime EP0367845B1 (de) 1988-11-07 1988-11-07 Flüssigkeitsringpumpe

Country Status (4)

Country Link
US (1) US4992028A (US20030204162A1-20031030-M00001.png)
EP (1) EP0367845B1 (US20030204162A1-20031030-M00001.png)
JP (1) JPH0264782U (US20030204162A1-20031030-M00001.png)
DE (1) DE3867068D1 (US20030204162A1-20031030-M00001.png)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE119628T1 (de) * 1991-12-17 1995-03-15 Siemens Ag Flüssigkeitsringpumpe.
DE29803768U1 (de) * 1998-03-04 1998-06-10 Siemens AG, 80333 München Flüssigkeitsringpumpe
US6692234B2 (en) * 1999-03-22 2004-02-17 Water Management Systems Pump system with vacuum source
US6390768B1 (en) 1999-03-22 2002-05-21 David Muhs Pump impeller and related components
US6405748B1 (en) * 1999-03-22 2002-06-18 David Muhs Trailer and fuel tank assembly
US6315524B1 (en) 1999-03-22 2001-11-13 David Muhs Pump system with vacuum source
US6641369B2 (en) * 1999-05-19 2003-11-04 Robuschi & C. S.P.A. Liquid ring compressor with thin distribution plate
CN1118631C (zh) * 2000-03-01 2003-08-20 倪春堂 旋转活塞泵
ES2271420T3 (es) * 2003-05-16 2007-04-16 Sterling Fluid Systems (Germany) Gmbh Bomba de gas hidrorrotativa.
US7878768B2 (en) 2007-01-19 2011-02-01 David Muhs Vacuum pump with wear adjustment
US8998586B2 (en) * 2009-08-24 2015-04-07 David Muhs Self priming pump assembly with a direct drive vacuum pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1897199A (en) * 1931-03-30 1933-02-14 Grigsby Grunow Co Compressor
US3180449A (en) * 1963-01-28 1965-04-27 Ingersoll Rand Co Noise abatement snubber for vacuum pump system
DE2318538B2 (de) * 1973-04-12 1975-12-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verteiler für einen Flüssigkeitsringgasverdichter
DE3337837A1 (de) * 1983-10-18 1985-04-25 Siemens AG, 1000 Berlin und 8000 München Fluessigkeitsringpumpe
JPH0742937B2 (ja) * 1984-06-04 1995-05-15 株式会社日立製作所 横形ロータリ式圧縮機
DE3421866A1 (de) * 1984-06-13 1985-12-19 Sihi Gmbh & Co Kg, 2210 Itzehoe Fluessigkeitsring-verdichteraggregat
US4755107A (en) * 1986-05-14 1988-07-05 Siemens Aktiengesellschaft Liquid-ring pump having additional openings in control disc for warm and cold liquid

Also Published As

Publication number Publication date
JPH0264782U (US20030204162A1-20031030-M00001.png) 1990-05-15
US4992028A (en) 1991-02-12
EP0367845A1 (de) 1990-05-16
DE3867068D1 (de) 1992-01-30

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