EP3460247A1 - Pompe périphérique modifiée et procédé de fonctionnement d'une telle pompe périphérique modifiée - Google Patents

Pompe périphérique modifiée et procédé de fonctionnement d'une telle pompe périphérique modifiée Download PDF

Info

Publication number: EP3460247A1
Authority: EP; European Patent Office
Prior art keywords: side channel; pressure; line; impeller; pump
Prior art date: 2017-09-20
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

EP18195434.8A

Other languages

German (de)

English (en)

Other versions

EP3460247B1 (fr

Inventor

Andrej Getze

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.)

Lutz Pumpen GmbH

Original Assignee

Lutz Pumpen 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.)

2017-09-20

Filing date

2018-09-19

Publication date

2019-03-27

2018-09-19 Application filed by Lutz Pumpen GmbH filed Critical Lutz Pumpen GmbH

2019-03-27 Publication of EP3460247A1 publication Critical patent/EP3460247A1/fr

2020-07-15 Application granted granted Critical

2020-07-15 Publication of EP3460247B1 publication Critical patent/EP3460247B1/fr

Status Active legal-status Critical Current

2038-09-19 Anticipated expiration legal-status Critical

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
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
- F04D5/007—Details of the inlet or outlet
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0027—Varying behaviour or the very pump
- F04D15/005—Varying behaviour or the very pump the pumps being of the circumferential flow type
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes

Definitions

the present invention relates to various variants of a side channel pump having an impeller rotating in a housing, the impeller forming a plurality of cells separated by blades extending from a hub, which eccentrically sweep a side channel guided in the housing a suction line in the direction of rotation of the impeller extends radially around the hub up to a pressure line, and various methods for operating such a side channel pump.
a conventional, in the specific case two-stage, side channel pump is approximately from the DE 44 15 566 C2 previously known.
the principle of the side channel pump developed at the beginning of the twentieth century from the water ring pump and has been known so far for a long time. Their field of application is traditionally the smaller and medium flow rates.
the side channel pump has on a housing to a suction line and a pressure line, which are connected to each other via the side channel.
the side channel runs radially about a three-quarter turn around the hub of an impeller, the blades of the impeller off-center in the opposite to the path of the blades laterally offset, so engage eccentric side channel.
the present invention is based on the object to modify the side channel pump so that it can be used in other areas as well as pure conveying purposes in smaller and medium media flows meaningful.
This object is achieved by a side channel pump according to the features of claim 1, and the independent claim 2.
a useful embodiment of such side channel pumps can be found in the dependent claim 3.
this object solves a method for operating a side channel pump according to the features of the method claims 4 or 5, which in turn are further developed by the dependent claim 6.
this object also solves a method for operating a side channel pump according to the features of the further independent method claim. 7
a conventional side channel pump having an impeller and an eccentric side channel, which in turn extends from a suction line in the direction of flow to a pressure line. While the side channel around the impeller rotates once well over three quarters, occur axially adjacent to the impeller leakage flows at locations where the medium is not taken along itself. These run laterally along the hub of the impeller, as well as in the short area in the direction of rotation of the impeller after the pressure line and in front of the suction line.
the invention makes use of these leakage currents.
a negative pressure or an overpressure This can be made available via an additional connection, which is arranged in this leakage area.
an identical pressure on the pressure line as on the suction line can be generated by applying a common reservoir between the pressure line and the suction line from which a medium is fed into the suction line, the side channel pump passes through and again is conveyed via the pressure line into the reservoir.
the same pressure is applied to both lines, since this does not change as a result of the infeed and outfeed, and a negative pressure is established at the additional connection.
a negative pressure can be applied in any other system, the solution can be operated as a vacuum pump.
a use of the invention modified side channel pump as a metering pump is possible that at about the same pressure conditions in the Suction line and in the pressure line an additional medium via the additional connection is brought.
By precisely setting the pressure conditions via a valve on the pressure line it is possible to set how much of the additional medium is introduced into the interior of the modified side channel pump, so that an exact metering is possible.
the valve on the pressure line continues to be closed, the pressure in the pressure line rises and an imbalance arises.
the pressure in the side channel pump increases, the additional connection can now be used to sample the subsidized medium by depending on the valve position at the pressure line exits a smaller or larger amount of the pumped medium.
a valve can also be assigned to the additional connection or an additional line connected thereto in order to control the inflow or outflow via the additional connection.
FIG. 1 shows a modified according to the invention side channel pump 1, which in a housing 5 has a motor-driven, rotatably received impeller 2.
the impeller 2 substantially fills the housing 5, but also passes through a side channel 6 which is guided around the circumference of the impeller 2 in a semicircular manner in the housing 5 and is arranged eccentrically in the axial direction.
the medium to be delivered is introduced via a suction line 8 and guided around the impeller to a pressure line 9.
the impeller 2 rotates about an axis of rotation and has a hub 4, from which blades 3 radially forterumblen and thus form between them, the hub 4 and the housing 5 cells in which the medium is further promoted.
the side channel 6 does not close here to the full circumference of the impeller, but is interrupted in the direction of rotation of the impeller between the pressure line 9 and suction line 8. At this point, the side channel 6 goes over into the pressure line 9. Due to the multi-stage effect of the side channel pump creates a high pressure compared to identical centrifugal pumps.
This effect which principally occurs in side channel pumps 1, is accompanied by a leakage flow 7, in which the medium is guided past the hub 4, because there is a certain distance in the axial direction between the impeller and the wall of the housing 5.
an additional connection 10 is provided, with which the particular pressure conditions within the side channel pump 1 can be utilized.
FIG. 2 shows this additional connection 10 again in a lateral cross-sectional view, which illustrates that the leakage flow 7 occurs in the axial direction laterally adjacent to the impeller 2 as a kind of bypass between different sections of the side channel 6.
the modified side channel pump 1 can be used as a metering pump by the pressure P1 in the suction line 8 is set approximately equal to the pressure P2 in the pressure line, which can be done via the valve 13.
the pressure P1 in the suction line 8 is set approximately equal to the pressure P2 in the pressure line, which can be done via the valve 13.
a valve 12 can also serve to limit the metering.
valve 13 is closed further, so that the pressure P2 in the pressure line 9 rises, so does the static pressure in the side channel pump 1 and there is an overpressure on the additional connection 10.
the valve 12 is used to limit the flow, but this time the extraction flow from the side channel pump 1 out.
the modified side channel pump can be converted into a vacuum pump.
Such a configuration can also be implemented directly in the same building unit in a solid housing, so that a specialized vacuum pump can be realized in which the auxiliary medium conveyed in the side channel pump 1 does not leave the overall arrangement.
modified side channel pump which makes use of the effects occurring in the side channel pump and realizes an additional connection in order to make the pressure conditions occurring in the side channel pump outwards usable for different applications of such a modified side channel pump.

Landscapes

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

EP18195434.8A 2017-09-20 2018-09-19 Procédé de fonctionnement d'une pompe périphérique comme pompe de dosage, pompe à vide ou pour échantillonnage Active EP3460247B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102017121777.0A DE102017121777A1 (de)	2017-09-20	2017-09-20	Modifizierte Seitenkanalpumpe sowie Verfahren zum Betrieb einer solchen

Publications (2)

Publication Number	Publication Date
EP3460247A1 true EP3460247A1 (fr)	2019-03-27
EP3460247B1 EP3460247B1 (fr)	2020-07-15

Family

ID=63642835

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP18195434.8A Active EP3460247B1 (fr)	2017-09-20	2018-09-19	Procédé de fonctionnement d'une pompe périphérique comme pompe de dosage, pompe à vide ou pour échantillonnage

Country Status (2)

Country	Link
EP (1)	EP3460247B1 (fr)
DE (1)	DE102017121777A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0544680A (ja) *	1991-08-20	1993-02-23	Nikoku Kikai Kogyo Kk	渦流ポンプ
JPH06330888A (ja) *	1993-05-24	1994-11-29	Nikoku Kikai Kogyo Kk	渦流ポンプ
US5375970A (en) *	1991-05-14	1994-12-27	Mitsubishi Denki Kabushiki Kaisha	Circumferential flow type liquid pump
JP2003145139A (ja) *	2001-11-16	2003-05-20	Nikuni:Kk	液処理装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE867933C (de) *	1941-03-09	1953-03-05	Siemens Ag	Pump-Spaltdichtung
DE4415566C2 (de)	1994-05-03	1999-02-18	Sero Pumpenfabrik Gmbh	Seitenkanalpumpe
ATE512307T1 (de) *	2004-10-20	2011-06-15	Waterco Ltd	Pumpenzweitdichtung
DE102013108482A1 (de) *	2013-08-06	2015-02-12	Pfeiffer Vacuum Gmbh	Vakuumpumpstufe
FR3030648B1 (fr) *	2014-12-19	2019-05-03	Valeo Systemes De Controle Moteur	Compresseur avec systeme d’etancheite

2017
- 2017-09-20 DE DE102017121777.0A patent/DE102017121777A1/de not_active Withdrawn
2018
- 2018-09-19 EP EP18195434.8A patent/EP3460247B1/fr active Active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5375970A (en) *	1991-05-14	1994-12-27	Mitsubishi Denki Kabushiki Kaisha	Circumferential flow type liquid pump
JPH0544680A (ja) *	1991-08-20	1993-02-23	Nikoku Kikai Kogyo Kk	渦流ポンプ
JPH06330888A (ja) *	1993-05-24	1994-11-29	Nikoku Kikai Kogyo Kk	渦流ポンプ
JP2003145139A (ja) *	2001-11-16	2003-05-20	Nikuni:Kk	液処理装置

Also Published As

Publication number	Publication date
DE102017121777A1 (de)	2019-03-21
EP3460247B1 (fr)	2020-07-15

Legal Events

Date	Code	Title	Description
2019-02-22	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
2019-02-22	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED
2019-03-27	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2019-03-27	AX	Request for extension of the european patent	Extension state: BA ME
2019-04-12	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2019-05-15	17P	Request for examination filed	Effective date: 20190405
2019-05-15	RBV	Designated contracting states (corrected)	Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2020-04-01	GRAP	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOSNIGR1
2020-04-01	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: GRANT OF PATENT IS INTENDED
2020-04-29	INTG	Intention to grant announced	Effective date: 20200402
2020-06-10	GRAS	Grant fee paid	Free format text: ORIGINAL CODE: EPIDOSNIGR3
2020-06-12	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
2020-06-12	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE PATENT HAS BEEN GRANTED
2020-07-15	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2020-07-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: EP Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH
2020-08-05	REG	Reference to a national code	Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN
2020-08-06	REG	Reference to a national code	Ref country code: DE Ref legal event code: R096 Ref document number: 502018001900 Country of ref document: DE
2020-08-14	REG	Reference to a national code	Ref country code: CH Ref legal event code: NV Representative=s name: NOVAGRAAF INTERNATIONAL SA, CH
2020-08-15	REG	Reference to a national code	Ref country code: AT Ref legal event code: REF Ref document number: 1291327 Country of ref document: AT Kind code of ref document: T Effective date: 20200815
2020-11-25	REG	Reference to a national code	Ref country code: LT Ref legal event code: MG4D
2020-12-23	REG	Reference to a national code	Ref country code: NL Ref legal event code: MP Effective date: 20200715
2021-01-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: HR 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: 20200715 Ref country code: LT 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: 20200715 Ref country code: PT 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: 20201116 Ref country code: SE 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: 20200715 Ref country code: BG 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: 20201015 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: 20201016 Ref country code: FI 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: 20200715 Ref country code: NO 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: 20201015 Ref country code: ES 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: 20200715
2021-02-26	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: RS 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: 20200715 Ref country code: PL 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: 20200715 Ref country code: LV 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: 20200715 Ref country code: IS 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: 20201115
2021-03-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL 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: 20200715
2021-04-16	REG	Reference to a national code	Ref country code: DE Ref legal event code: R097 Ref document number: 502018001900 Country of ref document: DE
2021-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SM 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: 20200715 Ref country code: EE 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: 20200715 Ref country code: DK 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: 20200715 Ref country code: CZ 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: 20200715 Ref country code: RO 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: 20200715
2021-05-21	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
2021-05-21	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
2021-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: AL 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: 20200715
2021-06-18	REG	Reference to a national code	Ref country code: BE Ref legal event code: MM Effective date: 20200930
2021-06-23	26N	No opposition filed	Effective date: 20210416
2021-06-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SK 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: 20200715 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200919
2021-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200930 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200919 Ref country code: SI 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: 20200715
2022-06-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: TR 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: 20200715 Ref country code: MT 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: 20200715 Ref country code: CY 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: 20200715
2022-06-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: MK 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: 20200715 Ref country code: MC 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: 20200715
2023-06-21	P01	Opt-out of the competence of the unified patent court (upc) registered	Effective date: 20230513
2024-10-14	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20240923 Year of fee payment: 7
2024-10-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20240924 Year of fee payment: 7
2024-10-24	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 20240918 Year of fee payment: 7
2025-01-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: IT Payment date: 20240930 Year of fee payment: 7
2025-01-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 20241001 Year of fee payment: 7
2025-10-10	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20250919 Year of fee payment: 8

Publication	Publication Date	Title
DE69431204T2 (de)	2003-08-07	Blutpumpe
DE2460282A1 (de)	1975-08-14	Zentrifugalpumpe
EP2628958A2 (fr)	2013-08-21	Roue directrice pour une pompe et pompe
DE2541539A1 (de)	1976-08-26	Hydraulische mit viskoser fluessigkeit arbeitende kupplung
DE3235427A1 (de)	1983-04-14	Fluegelpumpe
DE2326627B2 (de)	1980-03-06	Hydraulische Flügelzellenpumpe
DE102013102031A1 (de)	2014-09-04	Aus wenigstens zwei Teilen gebildete Schraubenspindelpumpe
DE102012214355A1 (de)	2014-02-13	Führungsring für ein Pumpenelement einer Fahrzeugbremsanlage
DE2405655A1 (de)	1974-10-10	Pitot-kreiselpumpe mit geschlitzten einlasskanaelen im rotorgehaeuse
DE112011101494T5 (de)	2013-02-07	Verdichter eines Abgasturboladers
DE102015003224B4 (de)	2018-02-08	Selbstansaugende Pumpe
CH390061A (de)	1965-03-31	Durch einen Spaltrohrmotor angetriebene, mehrstufige Kreiselpumpe
DE102005050216B4 (de)	2014-01-09	Volumenstromgeregelte, einhubige Flügelzellenpumpe
DE102016116756A1 (de)	2017-03-16	Fahrzeughydraulikvorrichtung
DE3725802C2 (de)	1995-11-09	Kraftstoffördereinrichtung
EP3460247A1 (fr)	2019-03-27	Pompe périphérique modifiée et procédé de fonctionnement d'une telle pompe périphérique modifiée
DE2523298A1 (de)	1975-12-18	Rotationsverdraengerpumpe bzw. -motor
DE1728268A1 (de)	1972-03-30	Fluegelzellenpumpe oder- motor
DE7229857U (de)	1973-11-22	Als pumpe oder motor verwendbare hydrostatische vorrichtung
DE1528717B2 (de)	1976-04-15	Vorrichtung zum ausgleich des axialschubes bei mehrstufigen kreiselpumpen
DE112011101949T5 (de)	2013-03-28	Pumpengruppe für einen Kühlkreislauf, insbesondere für ein Motorrad
DE1003040B (de)	1957-02-21	Axialkolbenpumpe oder -motor mit umlaufender Zylindertrommel
DE2845301B2 (de)	1980-11-20	Lenkventil für Hilfskraftlenkungen
DE102012219132A1 (de)	2014-04-24	Innenzahnradpumpe für eine hydraulische Fahrzeugbremsanlage
DE2519366A1 (de)	1976-01-08	Verfahren zum verlustarmen veraendern des foerderstromes einer verdraengerpumpe mit festem verdraengervolumen und vorrichtung zur ausfuehrung des verfahrens