EP0694698A1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

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Publication number
EP0694698A1
EP0694698A1 EP95107775A EP95107775A EP0694698A1 EP 0694698 A1 EP0694698 A1 EP 0694698A1 EP 95107775 A EP95107775 A EP 95107775A EP 95107775 A EP95107775 A EP 95107775A EP 0694698 A1 EP0694698 A1 EP 0694698A1
Authority
EP
European Patent Office
Prior art keywords
pump
outlet
impeller
pressure chamber
centrifugal pump
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.)
Granted
Application number
EP95107775A
Other languages
German (de)
English (en)
Other versions
EP0694698B1 (fr
Inventor
Günter Strelow
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.)
Wilo GmbH
Original Assignee
Wilo 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 Wilo GmbH filed Critical Wilo GmbH
Publication of EP0694698A1 publication Critical patent/EP0694698A1/fr
Application granted granted Critical
Publication of EP0694698B1 publication Critical patent/EP0694698B1/fr
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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a centrifugal pump with an annular pressure chamber surrounding the impeller, which is coaxial to the impeller and in which the medium circulates until it reaches the pump outlet, with no further channels or lines for the medium flowing to the outlet between the pressure chamber and the outlet.
  • centrifugal pumps have an annular pressure chamber surrounding the impeller, in the chamber wall of which the outlet is located directly, the outlet being located in a pump side surface which is perpendicular to the impeller axis and with which the pump can be fastened to a surface of a consumer, so that the side surface the pump is on the side surface of the consumer and the inlets and outlets are arranged in both surfaces.
  • This known centrifugal pump can not be operated in two directions of rotation, so that it is also not possible to supply different channels, rooms, consumers or systems with the medium due to the choice of direction of rotation.
  • the object of the invention is to improve a centrifugal pump of the type mentioned in such a way that, due to the selected direction of rotation of the pump impeller, different channels, rooms, consumers or systems can be supplied with the conveyed medium.
  • the pressure chamber has a second pump outlet, that both pump outlets can be closed by a valve closing member, that in a direction of rotation of the impeller, the flow flowing in a first direction closes the first pump outlet and opens the second pump outlet and that in the opposite direction of impeller rotation, the flow flowing in the second direction in the pressure chamber opens the first pump outlet and closes the second pump outlet.
  • the first or second outlet is supplied with the conveying medium, the valve closing member of the supplied outlet being opened by the conveying medium and the valve closing member of the non-supplied outlet being closed by the conveying medium.
  • the impeller automatically controls due to its direction of rotation, through which outlet the medium is to flow, the other, not supplied outlet is securely closed. This is done with the simplest construction, low installation effort, not enlarged external dimensions and high operational reliability.
  • valve closing members have flow surfaces which close the valve closing member in one direction of flow through the conveying medium and open the valve closing member in the opposite direction of flow.
  • the valve closing members can be valve closing flaps. A particularly space-saving design with high functional reliability is achieved when the flaps reach into the pressure chamber when open.
  • a high level of functional reliability is achieved if a front flap edge forms at least one flow area.
  • the front flap edge can protrude nose-like or tongue-shaped.
  • both valves are located in or on a pump side surface which is arranged at right angles to the impeller axis and which delimits the pump chamber and with which the pumps can be fastened to the side surface of a consumer or a connecting device. It is also advantageous if the valve closing members are mounted in an insert that lies in the interior of the pump housing. This makes it possible to convert a conventional pump into the pump according to the invention solely by redesigning the insert, i.e. except for the use, all other parts of the pump can remain the same and the pump according to the invention is created only on the basis of the selected insert provided with two closable outlets. The insert can form the pump side surface up to the edge of the pump housing.
  • a simple construction, a light and tight connection and a simple assembly are achieved if the two pump outlets and valves are arranged diametrically opposite, the pump inlet being arranged in the middle between the two pump outlets.
  • a disk-shaped, in particular circular disk-shaped pump housing 1 can be fastened with a side surface 2 to the housing of an electric motor (not shown) and with the opposite side surface 3 to the side surface of a consumer or a connecting device.
  • the axis of the housing disc lies on the axis of the pump impeller 4, which is driven by the electric motor via a shaft 5.
  • the housing 1 forms an interior 6, in which not only the impeller 4, but also a pump insert 7 is arranged, which consists in particular of plastic and forms the inlet, two outlets and a circular pump pressure chamber 8, which surrounds the impeller 4 coaxially and for Side of the impeller has an annular extension 8a, in or on which two diametrically opposite outlets 9, 10 are attached.
  • the outlets 9, 10 are thus formed by the insert 7, the coaxial inlet 11, which leads from the surface 3 to the center of the impeller 4, being arranged centrally between the outlets.
  • the preferably rotationally symmetrical insert 7 lies with its outer wall against the inner wall of the housing 1 and, together with the flange-shaped edge 1a of the housing 1, forms the pump side surface 3 with which the pump is fastened in a sealing manner to the side wall of the consumer.
  • the inlets and outlets of the pump are aligned with those of the consumer.
  • the outlets 9 and 10 formed by the insert 7 with their outlet openings arranged in the side surface 3 each have a valve closing member 12, 13, which is formed in each case by a flap hinged laterally by an axis 15, the closed member or flap being in the closed state the side surface 14 is swept by the medium that circles in the pressure chamber 8.
  • This side surface 14 facing the pressure chamber has on the side facing away from the axis 15 a nose or tongue 16 which forms an oblique flow surface 17 which projects obliquely into the flow path of the circulating medium.
  • the second closing member 13 of the second outlet 10 is arranged in the opposite direction from the point of view of the flow of the conveying medium, so that the conveying medium first reaches the front edge and thus the nose / tongue 16 of the closing member 13.
  • the conveying medium thus exerts a pressure on the flow surface 17 of the closing member 13, which opens the closing member 13 and keeps it open until the direction of rotation of the impeller 4 and thus the direction of flow of the conveying medium in the pressure chamber 8 is reversed.
  • the valve closing member 13 is closed and the valve closing member 12 is opened.
  • flap-shaped valve closing members 12, 13 can also have other shapes or be formed by other types of closing members, as long as it is ensured that the medium circulating in the pressure chamber actuates the closing member, i.e. can open and close depending on the direction of flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • External Artificial Organs (AREA)
EP95107775A 1994-05-25 1995-05-22 Pompe centrifuge Expired - Lifetime EP0694698B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4418153 1994-05-25
DE4418153A DE4418153A1 (de) 1994-05-25 1994-05-25 Kreiselpumpe

Publications (2)

Publication Number Publication Date
EP0694698A1 true EP0694698A1 (fr) 1996-01-31
EP0694698B1 EP0694698B1 (fr) 1998-04-08

Family

ID=6518877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107775A Expired - Lifetime EP0694698B1 (fr) 1994-05-25 1995-05-22 Pompe centrifuge

Country Status (3)

Country Link
EP (1) EP0694698B1 (fr)
DE (2) DE4418153A1 (fr)
ES (1) ES2116648T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010124960A1 (fr) * 2009-04-27 2010-11-04 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle et pompe de circulation à dispositif d'aiguillage de l'eau
US7866944B2 (en) 2006-05-24 2011-01-11 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
CN111919030A (zh) * 2018-03-13 2020-11-10 格兰富控股联合股份公司 离心泵机组以及用于使这种泵机组中的阀元件运动的方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133130A1 (de) * 2001-07-07 2003-01-16 Miele & Cie Umwälzpumpe mit/ohne Heizungseinrichtung
DE102007056922A1 (de) * 2007-11-27 2009-05-28 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Hausgerät mit einer Wasserweiche
EP3376037B1 (fr) * 2017-03-14 2021-01-27 Grundfos Holding A/S Groupe pompe centrifuge
EP3376038B1 (fr) 2017-03-14 2021-07-28 Grundfos Holding A/S Groupe motopompe
DE102017221732A1 (de) * 2017-12-01 2019-06-06 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
EP3904738A1 (fr) * 2020-04-28 2021-11-03 Grundfos Holding A/S Dispositif de soupape hydraulique et ensemble e pompe centrifuge comprenant un tel dispositif de soupape hydraulique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL92795C (fr) * 1900-01-01
US4331295A (en) * 1979-04-27 1982-05-25 Hisanori Warihashi Windshield washer
EP0128579A1 (fr) * 1983-06-15 1984-12-19 FIAT AUTO S.p.A. Pompe pour l'alimentation sélective du lave-glace avant et du lave-glace arrière d'un véhicule
FR2598183A1 (fr) * 1986-04-30 1987-11-06 Maruko Keihoki Kk Pompe de distribution a direction selective
GB2202133A (en) * 1987-03-14 1988-09-21 Bosch Gmbh Robert Windscreen washer pump and valve assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883843A (en) * 1954-11-12 1959-04-28 Gen Electric Clothes washer with liquid recirculation system
US2838002A (en) * 1955-11-21 1958-06-10 Gen Electric Two-way pump
DE1809054A1 (de) * 1968-11-15 1970-06-04 Nebel Dipl Ing Franz Philipp Schaufelradzentrifugenpumpe
DE2114978A1 (de) * 1971-03-27 1972-10-05 Wahler Fa Gustav Ventil für gasförmige oder flüssige Medien
DE2245021A1 (de) * 1972-09-14 1974-03-21 Helmut Barwig Elektrische wasserpumpe fuer wohnwagen
DE3209542C1 (de) * 1982-03-16 1992-05-07 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Geschirrspülmaschine
SE458792B (sv) * 1984-01-30 1989-05-08 Flygt Ab Saett foer pumpning och omroerning av fraemst vaetska innehaallande fasta partiklar samt pump foer utfoerande av saettet
GB8629455D0 (en) * 1986-12-09 1987-01-21 Trico Folberth Ltd Valve arrangement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL92795C (fr) * 1900-01-01
US4331295A (en) * 1979-04-27 1982-05-25 Hisanori Warihashi Windshield washer
EP0128579A1 (fr) * 1983-06-15 1984-12-19 FIAT AUTO S.p.A. Pompe pour l'alimentation sélective du lave-glace avant et du lave-glace arrière d'un véhicule
FR2598183A1 (fr) * 1986-04-30 1987-11-06 Maruko Keihoki Kk Pompe de distribution a direction selective
GB2202133A (en) * 1987-03-14 1988-09-21 Bosch Gmbh Robert Windscreen washer pump and valve assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7866944B2 (en) 2006-05-24 2011-01-11 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
US8267648B2 (en) 2006-05-24 2012-09-18 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
US8734097B2 (en) 2006-05-24 2014-05-27 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
US9677563B2 (en) 2006-05-24 2017-06-13 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
US10605246B2 (en) 2006-05-24 2020-03-31 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
US11353030B2 (en) 2006-05-24 2022-06-07 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
US11892000B2 (en) 2006-05-24 2024-02-06 Resmed Motor Technologies Inc. Compact low noise efficient blower for CPAP devices
WO2010124960A1 (fr) * 2009-04-27 2010-11-04 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle et pompe de circulation à dispositif d'aiguillage de l'eau
CN111919030A (zh) * 2018-03-13 2020-11-10 格兰富控股联合股份公司 离心泵机组以及用于使这种泵机组中的阀元件运动的方法

Also Published As

Publication number Publication date
DE4418153A1 (de) 1995-11-30
EP0694698B1 (fr) 1998-04-08
DE59501825D1 (de) 1998-05-14
ES2116648T3 (es) 1998-07-16

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