EP0367845A1 - Pompe à anneau liquide - Google Patents

Pompe à anneau liquide Download PDF

Info

Publication number: EP0367845A1
Authority: EP; European Patent Office
Prior art keywords: housing cover; pressure chamber; pressure; pump; liquid ring
Prior art date: 1988-11-07
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.): Granted

Application number

EP88118520A

Other languages

German (de)

English (en)

Other versions

EP0367845B1 (fr

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

Siemens Corp

Original Assignee

Siemens AG

Siemens Corp

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.)

1988-11-07

Filing date

1988-11-07

Publication date

1990-05-16

1988-11-07 Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG

1988-11-07 Priority to DE8888118520T priority Critical patent/DE3867068D1/de

1988-11-07 Priority to EP88118520A priority patent/EP0367845B1/fr

1989-10-31 Priority to US07/429,765 priority patent/US4992028A/en

1989-11-01 Priority to JP1989127205U priority patent/JPH0264782U/ja

1990-05-16 Publication of EP0367845A1 publication Critical patent/EP0367845A1/fr

1991-12-18 Application granted granted Critical

1991-12-18 Publication of EP0367845B1 publication Critical patent/EP0367845B1/fr

2008-11-07 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

239000007788 liquid Substances 0.000 title claims abstract description 24
239000012530 fluid Substances 0.000 claims abstract description 6
238000013016 damping Methods 0.000 abstract description 3
239000002245 particle Substances 0.000 description 9
238000004519 manufacturing process Methods 0.000 description 2
239000000203 mixture Substances 0.000 description 2
230000004323 axial length Effects 0.000 description 1
238000005266 casting Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
238000003780 insertion Methods 0.000 description 1
230000037431 insertion Effects 0.000 description 1
238000007789 sealing Methods 0.000 description 1
239000007787 solid Substances 0.000 description 1
210000002105 tongue Anatomy 0.000 description 1

Images

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 disk, through which the gas enclosed and compressed in the blade cells of the pump wheel is pushed out rhythmically.
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 described deflection of the operating fluid creates a finely distributed fluid curtain, which has a highly sound-absorbing effect.
the desired deflection of the operating fluid is achieved by one or more guide surfaces extending axially into the pressure chamber. 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 extending 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 therefore 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 Pompe à anneau liquide Expired - Lifetime EP0367845B1 (fr)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
DE8888118520T DE3867068D1 (de)	1988-11-07	1988-11-07	Fluessigkeitsringpumpe.
EP88118520A EP0367845B1 (fr)	1988-11-07	1988-11-07	Pompe à anneau liquide
US07/429,765 US4992028A (en)	1988-11-07	1989-10-31	Liquid ring pump
JP1989127205U JPH0264782U (fr)	1988-11-07	1989-11-01

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP88118520A EP0367845B1 (fr)	1988-11-07	1988-11-07	Pompe à anneau liquide

Publications (2)

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

Family

ID=8199534

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP88118520A Expired - Lifetime EP0367845B1 (fr)	1988-11-07	1988-11-07	Pompe à anneau liquide

Country Status (4)

Country	Link
US (1)	US4992028A (fr)
EP (1)	EP0367845B1 (fr)
JP (1)	JPH0264782U (fr)
DE (1)	DE3867068D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0547436A1 (fr) *	1991-12-17	1993-06-23	Siemens Aktiengesellschaft	Pompe à anneau liquide
WO1999045275A1 (fr) *	1998-03-04	1999-09-10	Siemens Aktiengesellschaft	Pompe a anneau de liquide

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
DE50304745D1 (de) *	2003-05-16	2006-10-05	Sterling Fluid Sys Gmbh	Flüssigkeitsringgaspumpe
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

Citations (3)

* 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
US4636154A (en) *	1984-06-04	1987-01-13	Hitachi, Ltd.	Horizontal type rotary compressor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
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

1988
- 1988-11-07 EP EP88118520A patent/EP0367845B1/fr not_active Expired - Lifetime
- 1988-11-07 DE DE8888118520T patent/DE3867068D1/de not_active Expired - Lifetime
1989
- 1989-10-31 US US07/429,765 patent/US4992028A/en not_active Expired - Lifetime
- 1989-11-01 JP JP1989127205U patent/JPH0264782U/ja active Pending

Patent Citations (3)

* 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
US4636154A (en) *	1984-06-04	1987-01-13	Hitachi, Ltd.	Horizontal type rotary compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0547436A1 (fr) *	1991-12-17	1993-06-23	Siemens Aktiengesellschaft	Pompe à anneau liquide
US5299916A (en) *	1991-12-17	1994-04-05	Siemens Aktiengesellschaft	Liquid-ring pump having an outlet means including a noise reducing flexible membrane
WO1999045275A1 (fr) *	1998-03-04	1999-09-10	Siemens Aktiengesellschaft	Pompe a anneau de liquide

Also Published As

Publication number	Publication date
US4992028A (en)	1991-02-12
DE3867068D1 (de)	1992-01-30
JPH0264782U (fr)	1990-05-15
EP0367845B1 (fr)	1991-12-18

Legal Events

Date	Code	Title	Description
1990-03-31	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1990-05-16	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI
1990-08-01	17P	Request for examination filed	Effective date: 19900607
1991-03-27	17Q	First examination report despatched	Effective date: 19910214
1991-11-01	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1991-12-18	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI
1992-01-30	REF	Corresponds to:	Ref document number: 3867068 Country of ref document: DE Date of ref document: 19920130
1992-02-07	ET	Fr: translation filed
1992-03-10	ITF	It: translation for a ep patent filed
1992-04-15	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1992-10-22	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1992-10-22	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1992-12-09	26N	No opposition filed
1998-02-19	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19980219 Year of fee payment: 10
1998-11-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981130 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981130
1999-07-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2003-12-31	REG	Reference to a national code	Ref country code: GB Ref legal event code: 732E
2004-05-07	REG	Reference to a national code	Ref country code: FR Ref legal event code: TP
2006-11-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20061117 Year of fee payment: 19
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2008-07-23	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20071107
2008-10-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080603
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2009-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071130
2009-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071107

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