EP0694698B1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

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Publication number
EP0694698B1
EP0694698B1 EP95107775A EP95107775A EP0694698B1 EP 0694698 B1 EP0694698 B1 EP 0694698B1 EP 95107775 A EP95107775 A EP 95107775A EP 95107775 A EP95107775 A EP 95107775A EP 0694698 B1 EP0694698 B1 EP 0694698B1
Authority
EP
European Patent Office
Prior art keywords
pump
flow
impeller
outlet
pressure chamber
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
EP95107775A
Other languages
German (de)
English (en)
Other versions
EP0694698A1 (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 a Impeller surrounding annular pressure chamber, which is coaxial to the impeller and in which the fluid circulates until it reached the pump outlet, between the pressure chamber and Outlet no further channels or lines for the to Exhaust flowing medium exist.
  • centrifugal pumps known from EP 0218031 have an annular pressure chamber surrounding the impeller, the outlet is located directly in the chamber wall, the outlet being in a pump side surface, which is perpendicular to the impeller axis and with which the Pump can be attached to a surface of a consumer, so that the side surface of the pump on the side surface of the Consumer and the inlets and outlets in both Surfaces are arranged.
  • centrifugal pump cannot be used in two Direction of rotation are driven, so that it is not is possible due to the choice of the direction of rotation different channels, rooms, consumers or systems to supply with fluid.
  • Pumps operated with switchable directions of rotation are e.g. from GB 2 202 133 A, EP 0 128 579 A 1, Fr 2 598 183 Al and US 4,331,295.
  • Pumps for windscreen washers at which by changing the direction of rotation either Front window or the rear window with washing liquid is supplied.
  • Only for the pump from the US 4 331 295 is the with different directions of rotation Washing liquid from a container 1 or a container 2 sucked in to always feed them to the same nozzle.
  • Centrifugal pump with a fixed direction of rotation known at the conveying direction thanks to internal adjustable flaps can be switched between two connecting pieces.
  • the object of the invention is to provide a centrifugal pump improve the type mentioned so that due to the selected direction of rotation of the pump impeller different channels, rooms, consumers or systems can be supplied with the pumped medium.
  • the pressure chamber has a second pump outlet that both pump outlets through a valve closing element are closable that in an impeller direction of rotation flow flowing in a first direction in the Pressure chamber closes the first pump outlet and the second pump outlet opens and that in the opposite direction of rotation of the impeller second direction flowing flow in the pressure chamber opens the first pump outlet and the second Pump outlet closes, and that both valves in one arranged at right angles to the impeller axis Pump side surface lie, which is the pump chamber limited and with which the pumps on the side surface of a Consumer or a connecting device attachable is.
  • valve closing member of the delivered outlet opened by the medium and the valve closing member of the outlet not supplied is closed by the medium. It controls the impeller automatically due to its direction of rotation, through which outlet the medium is to flow, whereby the other, not supplied outlet securely closed is.
  • the Valve closure members have flow areas that in a flow direction through the medium Close valve closing member and in the opposite Open the valve closing element in the direction of flow.
  • the valve closing elements can close valve flaps be.
  • a high level of functional reliability is achieved if a front flap edge at least one flow area forms.
  • the front flap edge can be nose-shaped or stick out like a tongue.
  • valve closing members are stored in an insert in the interior of the Pump housing is inserted. This will make it possible
  • the Use down to the edge of the pump housing Form the pump side surface.
  • a disc-shaped, in particular circular disc-shaped Pump housing 1 is with a side surface 2 on the Housing of an electric motor, not shown, and with the opposite side surface 3 on the side surface a consumer or a connection device attachable.
  • the axis of the housing disc lies on the Axis of the pump impeller 4, the 5 via a shaft Electric motor is driven.
  • 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 rests with its outer wall on the inner wall of the housing 1 and, together with the flange-shaped edge la 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 each from one side through an axis 15 hinged flap is formed, being in the closed Condition of the closing member or the flap thereof
  • Side surface 14 is swept by the medium, that circles in the pressure chamber 8. This the pressure chamber facing side surface 14 points on the axis 15 facing away from a nose or tongue 16, the one forms oblique flow surface 17 which in the Flow path of the circulating fluid at an angle protrudes.
  • the first closing member 12 of the outlet 9 through the Pumped medium closed and kept closed because the Pumped medium with this closing element first Articulation point or the axis 15 reached and only after that the top or side surface 14 of the closing member reached so that the pumped medium on the side surface 14th exerts a flow pressure that the first closing member 12 closes or keeps closed.
  • the second closing member 13 of the second outlet 10 is but in the opposite direction from the perspective of Flow of the medium is arranged so that the Fluid first the front edge and thus the Nose / tongue 16 of the closing member 13 is reached.
  • Closing link types must be formed as long as provided is that the circulating fluid in the pressure chamber operate the locking member, i.e. depending on Flow direction can open and close.

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)

Claims (9)

  1. Pompe centrifuge avec une chambre de pression (8) de forme annulaire entourant la roue mobile (4), qui est coaxiale à la roue mobile et dans laquelle circule le liquide refoulé jusqu'à ce qu'il arrive dans la sortie (9,10) de pompe, d'autres canaux ou conduites pour le liquide refoulé s'écoulant jusqu'à la sortie n'existant pas entre la chambre de pression (8) et la sortie (9,10),
    caractérisée en ce
    que la chambre de pression (8) présente deux sorties (9,10) de pompe entre lesquelles l'entrée de pompe est disposée centralement,
    que, pour les deux sorties (9,10) de pompe est prévu respectivement un organe de fermeture à clapet (12, 13) par lequel les sorties (9,10) de pompe peuvent être fermées,
    que, dans une direction de rotation (18) de la roue mobile, le flux s'écoulant dans une première direction dans la chambre de pression (8) ferme la première sortie (9) de pompe et ouvre la seconde sortie (10) de pompe,
    que, dans la direction de rotation (19) opposée de la roue mobile, le flux s'écoulant dans la seconde direction dans la chambre de pression (8) ouvre la première sortie (9) de pompe et ferme la seconde sortie (10) de pompe et
    que les deux clapets se trouvent sur une face latérale (3) de la pompe disposée orthogonalement à l'axe de la roue mobile, qui délimite la chambre (8) de pompe et par laquelle les pompes peuvent être fixées à la face latérale d'un utilisateur ou d'un dispositif de raccordement
  2. Pompe centrifuge selon la revendication 1,
    caractérisée en ce que les organes de fermeture à clapet (12,13) présentent des surfaces d'écoulement (17) qui, dans une direction d'écoulement, ferment l'organe de fermeture à clapet (12,13) par le liquide refoulé et ouvrent l'organe de fermeture à clapet (12,13) dans la direction opposée d'écoulement.
  3. Pompe centrifuge selon la revendication 1 ou 2,
    caractérisée en ce que les organes de fermeture à clapet (12,13) sont des volets.
  4. Pompe centrifuge selon la revendication 3,
    caractérisée en ce que le volet, à l'état ouvert, fait saillie dans l'intérieur de la chambre de pression (8).
  5. Pompe centrifuge selon l'une des revendications 2 à 4,
    caractérisée en ce qu'une arête (16) frontale de volet forme au moins une surface d'écoulement (17).
  6. Pompe centrifuge selon la revendication 5,
    caractérisée en ce que l'arête (16) frontale de volet fait saillie en forme de nez ou en forme de languette.
  7. Pompe centrifuge selon l'une des revendications précédentes,
    caractérisée en ce que les organes de fermeture à clapet (12,13) sont montés dans un insert (7) qui est logé dans le volume intérieur (6) du carter (1) de la pompe.
  8. Pompe centrifuge selon la revendication 7,
    caractérisée en que l'insert (7) forme la face latérale (3) de la pompe jusqu'au bord (la) du carter (1) de la pompe.
  9. Pompe centrifuge selon l'une des revendications précédentes,
    caractérisée en ce que les deux sorties (9,10) de pompe et clapets sont disposés diamétralement opposés, l'entrée (11) de pompe étant disposée centralement entre les deux sorties de pompe.
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 EP0694698A1 (fr) 1996-01-31
EP0694698B1 true 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)

Families Citing this family (9)

* 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
NZ597253A (en) 2006-05-24 2013-06-28 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
DE102007056922A1 (de) * 2007-11-27 2009-05-28 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Hausgerät mit einer Wasserweiche
DE102009002667B4 (de) * 2009-04-27 2016-03-24 BSH Hausgeräte GmbH Geschirrspülmaschine und Umwälzpumpe mit 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
EP3540234A1 (fr) * 2018-03-13 2019-09-18 Grundfos Holding A/S Groupe pompe centrifuge et procédé pour déplacer une valve dans un groupe pompe centrifuge
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

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL92795C (fr) * 1900-01-01
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
JPS5848922Y2 (ja) * 1979-04-27 1983-11-08 久紀 割橋 ウインドウオッシャ−用ポンプユニット
DE3209542C1 (de) * 1982-03-16 1992-05-07 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Geschirrspülmaschine
IT8353466V0 (it) * 1983-06-15 1983-06-15 Fiat Auto Spa Pompa per l alimentazione selettiva del lavacristallo anteriore e dellavalunotto posteriore di un veicolo
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
JPS62261693A (ja) * 1986-04-30 1987-11-13 Maruko Keihouki Kk 選択型送出ポンプ
GB8629455D0 (en) * 1986-12-09 1987-01-21 Trico Folberth Ltd Valve arrangement
DE3708327A1 (de) * 1987-03-14 1988-09-22 Bosch Gmbh Robert Einrichtung zum foerdern von fluessigkeit auf zwei ueber spritzduesen zu netzende, mit abstand voneinander angeordnete scheibenbereiche eines kraftfahrzeugs

Also Published As

Publication number Publication date
ES2116648T3 (es) 1998-07-16
DE59501825D1 (de) 1998-05-14
DE4418153A1 (de) 1995-11-30
EP0694698A1 (fr) 1996-01-31

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