EP0323384A2 - Kreiselpumpe - Google Patents

Kreiselpumpe Download PDF

Info

Publication number: EP0323384A2
Authority: EP; European Patent Office
Prior art keywords: chamber; diffuser; water; hydro; light
Prior art date: 1987-12-28
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

EP88500127A

Other languages

English (en)

French (fr)

Other versions

EP0323384A3 (en

EP0323384B1 (de

Inventor

Pages Jose Pages

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.)

Bombas Electricas SA BOELSA

Original Assignee

Bombas Electricas SA BOELSA

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.)

1987-12-28

Filing date

1988-12-27

Publication date

1989-07-05

1988-12-27 Application filed by Bombas Electricas SA BOELSA filed Critical Bombas Electricas SA BOELSA

1988-12-27 Priority to AT88500127T priority Critical patent/ATE88546T1/de

1989-07-05 Publication of EP0323384A2 publication Critical patent/EP0323384A2/de

1989-11-29 Publication of EP0323384A3 publication Critical patent/EP0323384A3/fr

1993-04-21 Application granted granted Critical

1993-04-21 Publication of EP0323384B1 publication Critical patent/EP0323384B1/de

2008-12-27 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type

Definitions

the present invention relates to a centrifugal pump, of the type comprising a horizontal shaft electric motor and a coaxial pump body, essentially divided into a suction chamber and a treading chamber, the treading chamber of which is provided with at least a rotor rotating in a diffuser, driven by the shaft of the electric motor, a hydro-ejector member being arranged in the suction chamber according to the Bregel system, composed essentially by an injection nozzle and a diffusion nozzle based on the Venturi effect .
Pumping devices comprising the Bregel hydro-ejector system are already known and widely used today.
the known arrangement of the elements forming part of these pumps consists in placing the hydro-ejector, which comprises the ejector and the Venturi device, coaxially with the rotor shaft and the impeller from the pump, being necessary in this arrangement a bottom valve to avoid defusing the pump due to the siphon effect.
centrifugal pump which is the subject of this Utility Model No. 209.500, in which the injector and the Venturi device mentioned are arranged perpendicularly to the surface of the liquid to be pump, so that even when the pump is at rest, the level bottom of the pump liquid is always above the highest point of the compartment where the diffuser rotor is housed and covers at least the lower end of the injector.
This pump has reduced dimensions and its weight is low, having absolutely no need to incorporate a bottom valve therein since it is self-priming.
the pump which is the subject of the present invention also eliminates this drawback, which is characterized, essentially, by the fact that it comprises a chamber contiguous to the external face of the diffuser separated from the treading chamber by an essentially discoidal closing partition, provided in its upper half of an arcuate lumen, the curvature of the arc of which is slightly below 180 °, the closing partition mentioned also being provided on its internal face with a deflecting fin which, being arcuate and giving rise to a point of the rim of the upper half of the closing partition comes to a point of the upper rim of the light mentioned, the assembly consisting of the light and the deflector fin being arranged so as to constrain the water coming from the diffuser to circulate centrifugally inside the second chamber, so that any air bubbles contained in the mass of circulating water can be expelled very quickly obverse the light, going up towards the outside because of their lower density, while the water goes towards the bottom until the level of the water contained in the second mentioned chamber exceeds the lower edge of the light, then
the mentioned hydro-ejector member is constituted by a closed monobloc, provided with an external sheath provided with a first opening directly connected to the water inlet, with a second opening adapted to so that it is opposite and connected to the water inlet opening in the diffuser, finally a third opening, connected to the trough chamber, which constitutes the water inlet in the injector the hydro-ejector organ.
the pump in question comprises an electric motor 1 and a coaxial pump body 2, essentially divided into a suction chamber 3 and a treading chamber 4.
This treading chamber 4 is provided inside with at least one rotor 7 which rotates in a diffuser 8 and which is driven by the shaft 9 of the electric motor 1.
a hydro-ejector member according to the Bregel system, which essentially comprises an injection nozzle 5 and a diffusion nozzle 6 based on the Venturi effect.
the pump is provided with a chamber 10 contiguous to the external face of the diffuser 8 and separated from the treading chamber 4 by an essentially discoidal closing partition.
This closing partition 11 is provided on its upper half with an arcuate opening 12 and a deflecting fin 13 which, originating at a point on the edge of the lower half of this closing partition 11, comes to a point on the upper edge of the light 12.
the assembly constituted by the light 12 and the deflecting fin 13 is arranged so as to force the water coming from the diffuser 8 to circulate in a centrifugal manner inside the second chamber 10, so that the possible air bubbles contained in the mass of the circulating water can be separated from the water and rise due to their lower density outside this partition 11, while the water overflows towards the treading chamber 4 when it exceeds the lower rim 14 light 12.
This is how part of the water recirculates through the injection nozzle 5, through the opening 15, entering the hydro-ejector member entirely devoid of air.
This hydro-ejector member is constituted by a closed monobloc, provided with an outer sheath 16 provided with a first opening 17 directly connected to the opening 18 of the water inlet, with a second opening 19 adapted so that '' it is opposite and connected to the water inlet opening in the diffuser 8, finally a third opening 15 connected to the trough chamber 4, which constitutes the water inlet in the injector 5 of the hydro-ejector member.
the pump which is the subject of the present invention, apart from completely eliminating the drawbacks mentioned above, has the fundamental advantage that for implementing self-priming, it only needs the fourth part of the water used with traditional pumps fitted with a hydro-ejector.
the hydro-ejector member is constituted by a closed monobloc, which allows an easy replacement to obtain different hydraulic characteristics of the pump.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Jet Pumps And Other Pumps (AREA)

EP88500127A 1987-12-28 1988-12-27 Kreiselpumpe Expired - Lifetime EP0323384B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT88500127T ATE88546T1 (de)	1987-12-28	1988-12-27	Kreiselpumpe.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
ES8800215A ES2006285A6 (es)	1987-12-28	1987-12-28	Bomba centrifuga.
ES8800215		1987-12-28

Publications (3)

Publication Number	Publication Date
EP0323384A2 true EP0323384A2 (de)	1989-07-05
EP0323384A3 EP0323384A3 (en)	1989-11-29
EP0323384B1 EP0323384B1 (de)	1993-04-21

Family

ID=8254611

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP88500127A Expired - Lifetime EP0323384B1 (de)	1987-12-28	1988-12-27	Kreiselpumpe

Country Status (4)

Country	Link
EP (1)	EP0323384B1 (de)
AT (1)	ATE88546T1 (de)
DE (1)	DE3880466D1 (de)
ES (1)	ES2006285A6 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2650864A1 (fr) *	1989-08-09	1991-02-15	Pumpen & Verdichter Veb K	Combinaison d'une pompe centrifuge a roue radiale avec une pompe a jet
EP0401670A3 (de) *	1989-06-07	1991-07-03	Ebara Corporation	Selbstansaugende Kreiselpumpe
EP0552661A1 (de) *	1992-01-24	1993-07-28	Ebara Corporation	Selbstansaugende Kreiselpumpe
WO1998023864A1 (en)	1996-11-27	1998-06-04	Calpeda S.P.A.	Diffuser and conveyor device for a single-impeller centrigugal self-priming pump
RU2175406C1 (ru) *	2000-05-26	2001-10-27	Несытов Евгений Константинович	Центробежный самовсасывающий насос
EP2037125A2 (de)	2007-09-14	2009-03-18	Dab Pumps S.p.A.	Selbstansaugende Zentrifugalstrahlpumpe
EP2937479A1 (de)	2014-04-25	2015-10-28	Victor Jean Ballestra	Sanitäre abflussvorrichtung zum ableiten des wassers aus einer dusche
CN108953091A (zh) *	2018-08-30	2018-12-07	台州市禺工泵业科技有限公司	一种高效节能泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ES2161191B1 (es) *	2000-03-27	2002-07-01	Bogemar Sl	Bomba centrifuga con hidroeyector.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2525772A (en) *	1945-06-29	1950-10-17	F E Myers & Bro Co	Convertible ejector pump
US2941474A (en) *	1956-08-20	1960-06-21	Fairbanks Morse & Co	Self-priming pumping apparatus
US2934021A (en) *	1956-10-09	1960-04-26	F E Meyers & Bro Co	Shallow well self-priming jet pump
CH484369A (de) *	1967-07-07	1970-01-15	Muanyagipari Ki	Ein- oder mehrstufige selbstansaugende Pumpe
DE3409463C2 (de) *	1984-03-15	1986-06-26	Grundfos A/S, Bjerringbro	Strömungspumpe, insbesondere Kreiselpumpe
DE3718273C2 (de) *	1986-09-01	1994-12-15	Apollowerk Goesnitz Gmbh	Selbstansaugende horizontale Radialkreiselpumpe

1987
- 1987-12-28 ES ES8800215A patent/ES2006285A6/es not_active Expired
1988
- 1988-12-27 EP EP88500127A patent/EP0323384B1/de not_active Expired - Lifetime
- 1988-12-27 AT AT88500127T patent/ATE88546T1/de not_active IP Right Cessation
- 1988-12-27 DE DE8888500127T patent/DE3880466D1/de not_active Expired - Lifetime

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0401670A3 (de) *	1989-06-07	1991-07-03	Ebara Corporation	Selbstansaugende Kreiselpumpe
FR2650864A1 (fr) *	1989-08-09	1991-02-15	Pumpen & Verdichter Veb K	Combinaison d'une pompe centrifuge a roue radiale avec une pompe a jet
EP0552661A1 (de) *	1992-01-24	1993-07-28	Ebara Corporation	Selbstansaugende Kreiselpumpe
US5451139A (en) *	1992-01-24	1995-09-19	Ebara Corporation	Self priming centrifugal
WO1998023864A1 (en)	1996-11-27	1998-06-04	Calpeda S.P.A.	Diffuser and conveyor device for a single-impeller centrigugal self-priming pump
RU2175406C1 (ru) *	2000-05-26	2001-10-27	Несытов Евгений Константинович	Центробежный самовсасывающий насос
EP2037125A2 (de)	2007-09-14	2009-03-18	Dab Pumps S.p.A.	Selbstansaugende Zentrifugalstrahlpumpe
EP2037125A3 (de) *	2007-09-14	2010-05-26	Dab Pumps S.p.A.	Selbstansaugende Zentrifugalstrahlpumpe
EP2937479A1 (de)	2014-04-25	2015-10-28	Victor Jean Ballestra	Sanitäre abflussvorrichtung zum ableiten des wassers aus einer dusche
FR3020386A1 (fr) *	2014-04-25	2015-10-30	Victor Jean Ballestra	Dispositif d'evacuation sanitaire pour l'evacuation des eaux d'une douche
CN108953091A (zh) *	2018-08-30	2018-12-07	台州市禺工泵业科技有限公司	一种高效节能泵

Also Published As

Publication number	Publication date
EP0323384A3 (en)	1989-11-29
ATE88546T1 (de)	1993-05-15
ES2006285A6 (es)	1989-04-16
DE3880466D1 (de)	1993-05-27
EP0323384B1 (de)	1993-04-21

Legal Events

Date	Code	Title	Description
1989-05-20	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
1989-07-05	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH DE FR GB GR IT LI LU NL SE
1989-10-11	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1989-11-29	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH DE FR GB GR IT LI LU NL SE
1990-07-18	17P	Request for examination filed	Effective date: 19900522
1991-10-30	17Q	First examination report despatched	Effective date: 19910916
1993-03-05	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1993-04-21	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB GR IT LI LU NL SE
1993-04-21	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19930421 Ref country code: NL Effective date: 19930421 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19930421 Ref country code: GB Effective date: 19930421 Ref country code: DE Effective date: 19930421 Ref country code: AT Effective date: 19930421
1993-04-21	REF	Corresponds to:	Ref document number: 88546 Country of ref document: AT Date of ref document: 19930515 Kind code of ref document: T
1993-05-27	REF	Corresponds to:	Ref document number: 3880466 Country of ref document: DE Date of ref document: 19930527
1993-07-14	ITF	It: translation for a ep patent filed
1993-10-18	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1993-10-27	GBV	Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]	Effective date: 19930421
1993-12-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19931231 Ref country code: LI Effective date: 19931231 Ref country code: CH Effective date: 19931231 Ref country code: BE Effective date: 19931231
1994-02-24	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1994-02-24	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1994-04-13	26N	No opposition filed
1994-06-30	BERE	Be: lapsed	Owner name: S.A. BOMBAS ELECTRICAS BOELSA Effective date: 19931231
1994-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19940831
1994-08-31	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
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2005-12-27	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: 20051227

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