EP0618368B1 - Pompe centrifuge radiale - Google Patents

Pompe centrifuge radiale Download PDF

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Publication number
EP0618368B1
EP0618368B1 EP94102697A EP94102697A EP0618368B1 EP 0618368 B1 EP0618368 B1 EP 0618368B1 EP 94102697 A EP94102697 A EP 94102697A EP 94102697 A EP94102697 A EP 94102697A EP 0618368 B1 EP0618368 B1 EP 0618368B1
Authority
EP
European Patent Office
Prior art keywords
distance
wheel
impeller
centrifugal pump
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.)
Expired - Lifetime
Application number
EP94102697A
Other languages
German (de)
English (en)
Other versions
EP0618368A1 (fr
Inventor
Albert Genster
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 EP0618368A1 publication Critical patent/EP0618368A1/fr
Application granted granted Critical
Publication of EP0618368B1 publication Critical patent/EP0618368B1/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
    • 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
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a radial centrifugal pump with an impeller, in particular with blades, which is surrounded on its circumference by fixed guide vanes.
  • the object of the invention is to provide a centrifugal pump of the type mentioned, which is self-priming with low noise.
  • This object is achieved in that one or two guide vanes with the front inner blade edge are close to the impeller and the distance between the front inner blade edge and the impeller is up to 4 mm, preferably 2 mm, and in that the distance between the front blade edges of the rest Guide vanes and the impeller circumference is at least twice the distance of the nearby guide vane (s).
  • the pump runs very quietly. Nevertheless, the pump is self-priming, since this is ensured by the fixed guide vane arranged at the top, which is arranged with its front inner vane edge close to the circumference of the impeller. This creates a centrifugal pump with little design effort, which, despite its self-priming properties, generates only little noise.
  • the upper guide vane thus improves the suction behavior of the pump with regard to the suction height and suction time, while the remaining stationary guide vanes reduce the noise level of the pump.
  • the impeller 1 is fixed on a shaft 2 and has a diameter D2.
  • the impeller carries four blades 3.
  • the impeller is surrounded on its circumference 4 by fixed guide vanes 5.
  • the dimensions of the distances a and b can be designed differently than mentioned in this exemplary embodiment. It is important that the distance b is always smaller than the distance a, it having been found to be advantageous that the distance a is at least twice as large as the distance b.

Landscapes

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

Claims (2)

  1. Pompe centrifuge radiale avec un rotor (1) muni de pales, qui est entouré à sa périphérie par des pales directrices (5) fixes,
    caractérisée en ce
    - qu'une ou deux pales directrices (5a) sont disposées proches du rotor (1) par leur arête de pale antérieure intérieure (6) et la distance (b) entre l'arête de pale antérieure intérieure (6) et le rotor (1) est de 4mm, de préférence 2mm
    - et que la distance (8a) entre les arêtes de pale antérieures des pales directrices restantes et la périphérie (4) du rotor est au moins le double de la distance (b) de la (des) pale(s) directrice(s) voisine(s) (5a).
  2. Pompe centrifuge radiale selon la revendication 1, caractérisée en ce que, dans le cas d'un arbre (2) de rotor sensiblement horizontal, la pale directrice proche (5a) est disposée dans la zone supérieure près du rotor (1).
EP94102697A 1993-03-24 1994-02-23 Pompe centrifuge radiale Expired - Lifetime EP0618368B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4309479A DE4309479A1 (de) 1993-03-24 1993-03-24 Radialkreiselpumpe
DE4309479 1993-03-24

Publications (2)

Publication Number Publication Date
EP0618368A1 EP0618368A1 (fr) 1994-10-05
EP0618368B1 true EP0618368B1 (fr) 1996-04-24

Family

ID=6483668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102697A Expired - Lifetime EP0618368B1 (fr) 1993-03-24 1994-02-23 Pompe centrifuge radiale

Country Status (3)

Country Link
EP (1) EP0618368B1 (fr)
DE (2) DE4309479A1 (fr)
ES (1) ES2086974T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509255A1 (de) * 1994-03-19 1995-09-21 Klein Schanzlin & Becker Ag Einrichtung zur Geräuschreduzierung bei Kreiselpumpen
WO1999061801A1 (fr) * 1998-05-28 1999-12-02 Ebara Corporation Turbomachine
DE102013218410B4 (de) * 2013-09-13 2022-07-14 Technochem Im- Und Export Gmbh Zentrifugalpumpe
DE102016201256A1 (de) * 2016-01-28 2017-08-03 Siemens Aktiengesellschaft Strömungsmaschine mit beschaufeltem Diffusor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR899637A (fr) * 1942-09-11 1945-06-06 Daimler Benz Ag Couronne d'aubes directrices pour compresseur centrifuge
US2653546A (en) * 1949-11-03 1953-09-29 Jr Alfred S Marlow Self-priming pump
US3103177A (en) * 1961-07-20 1963-09-10 Bell & Gossett Co Self-priming centrifugal pump
US3873231A (en) * 1972-08-11 1975-03-25 Allis Chalmers Centrifugal pump diffuser
DE3539883A1 (de) * 1985-09-18 1987-03-26 Hermetic Pumpen Gmbh Selbstansaugende kreiselpumpe
DE3712916A1 (de) * 1987-04-16 1988-11-03 Korthaus Ernst Selbstsaugende kreiselpumpe

Also Published As

Publication number Publication date
ES2086974T3 (es) 1996-07-01
DE4309479A1 (de) 1994-09-29
DE59400226D1 (de) 1996-05-30
EP0618368A1 (fr) 1994-10-05

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