EP1862674B1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

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Publication number
EP1862674B1
EP1862674B1 EP07009745.6A EP07009745A EP1862674B1 EP 1862674 B1 EP1862674 B1 EP 1862674B1 EP 07009745 A EP07009745 A EP 07009745A EP 1862674 B1 EP1862674 B1 EP 1862674B1
Authority
EP
European Patent Office
Prior art keywords
suction
pump
impeller
housing
suction ring
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.)
Active
Application number
EP07009745.6A
Other languages
German (de)
English (en)
Other versions
EP1862674A1 (fr
Inventor
Anthony Le Mée
Xavier Rousseau
Maurice Ciron
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 SE
Original Assignee
Wilo SE
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 SE filed Critical Wilo SE
Publication of EP1862674A1 publication Critical patent/EP1862674A1/fr
Application granted granted Critical
Publication of EP1862674B1 publication Critical patent/EP1862674B1/fr
Active 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel

Definitions

  • the invention relates to a centrifugal pump with a pump housing, in the pump chamber on a shaft, a pump impeller is mounted, which has a central suction opening with a protruding sleeve-shaped coaxial edge which sealingly rests in a suction ring which surrounds the arranged in the pump housing suction opening, from which Impeller sucks the liquid to be delivered, wherein the suction ring has a U-shaped Querschitt.
  • a pump is out of the US-A-5,618,168 known.
  • the object of the invention is to improve a centrifugal pump of the type mentioned so that different impellers with different sized suction can be used with the same suction ring.
  • the inner radial width of the suction ring at least a quarter, in particular a third of the Inner diameter of the suction opening is.
  • Such a suction ring has a relatively large inner radial width, so that different impellers with different sized suction can be used. Thus, it is no longer necessary for each impeller with respective Ansaugö réelle diameter to produce a respective associated housing with matching suction ring. Rather, impellers with different sized intake ports can be used in one and the same pump housing.
  • the solution according to the invention has the advantage that even after installation of the pump, an impeller with a larger or smaller suction can be installed without having to change the pump housing, so that when replacing the pump housing can remain installed in the line unchanged.
  • the suction ring of the pump housing according to the invention can thus accommodate different wheels, without having to remove the pump housing.
  • the outer leg of the U-shaped cross section may have a height which is less than half the height of the inner leg. It is also proposed that the suction opening of the housing is formed by the inner opening of the suction ring.
  • the centrifugal pump has a housing 1 with a pump chamber 2, in which an impeller 3 is mounted on a shaft 4.
  • the shaft 4 is driven by an electric motor, not shown.
  • the impeller 3 conveys with blades 5 via a helical pump chamber area in a discharge nozzle, not shown.
  • the impeller 3 sucks in this case via a central suction port 6, the liquid from a suction port 7, which is arranged in the wall of the housing 1, and receives its liquid via a channel 8 from an intake manifold, not shown.
  • the suction opening 7 is coaxially surrounded by a suction ring (hollow ring) 9, which has a U-shaped cross-section, wherein the gap 10 between the legs 11, 12 is opened to the impeller 3.
  • the suction opening 6 of the impeller 3 is formed by a sleeve-shaped coaxial edge 13, which protrudes sealingly in the intermediate space 10 of the suction ring 9.
  • the impeller 3 has a suction opening 6 with a relatively small inner diameter I, so that the inside of the bush-shaped edge 13 rests against the inner side of the inner leg 11 or at least is close.
  • an impeller 3 in the same housing 1, is mounted with a suction opening 6 of larger diameter than in the first embodiment, so that the sleeve-shaped edge 13 is closer to the leg 12 of the suction ring 9.
  • the inner radial width B of Saugrings 9 at least a quarter, in particular at least one third of the inner diameter I of the suction port 7 of the housing 1, wherein the suction port 7 is formed by the inner opening of the suction ring 9.
  • the legs 11 and 12 of the suction ring 9 may have the same height. In the exemplary embodiment, however, the inner leg 11, which forms the suction opening 7, a greater height, in particular more than twice the height than the height H2 of the outer leg 12th

Landscapes

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

Claims (4)

  1. Pompe centrifuge comprenant un carter de pompe (1) dans l'espace de pompe (2) duquel un rotor de pompe (3) est supporté sur un arbre (4), le rotor de pompe présentant une ouverture d'aspiration centrale (6) avec un bord coaxial saillant en forme de douille (13) qui s'insère hermétiquement dans une bague d'aspiration (9) qui entoure l'ouverture d'aspiration (7) disposée dans le carter de pompe (1) depuis laquelle le rotor (3) aspire le fluide à refouler, la bague d'aspiration (9) présentant une section transversale en forme de U, caractérisée en ce que la largeur radiale intérieure (B) de la bague d'aspiration (9) représente au moins un quart, en particulier un tiers, du diamètre intérieur (I) de l'ouverture d'aspiration (7).
  2. Pompe centrifuge selon la revendication 1, caractérisée en ce que l'espace intermédiaire (10) formé par la bague d'aspiration (9) est ouvert vers le rotor (3).
  3. Pompe selon la revendication 1 ou 2, caractérisée en ce que la branche située à l'extérieur (12) de la section transversale en forme de U présente une hauteur (H2) qui est inférieure à la moitié de la hauteur (H1) de la branche située à l'intérieur (11).
  4. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ouverture d'aspiration (7) du carter (1) est formée par l'ouverture intérieure de la bague d'aspiration (9).
EP07009745.6A 2006-05-30 2007-05-16 Pompe centrifuge Active EP1862674B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610024997 DE102006024997A1 (de) 2006-05-30 2006-05-30 Kreiselpumpe

Publications (2)

Publication Number Publication Date
EP1862674A1 EP1862674A1 (fr) 2007-12-05
EP1862674B1 true EP1862674B1 (fr) 2017-02-08

Family

ID=38429955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07009745.6A Active EP1862674B1 (fr) 2006-05-30 2007-05-16 Pompe centrifuge

Country Status (2)

Country Link
EP (1) EP1862674B1 (fr)
DE (1) DE102006024997A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104024647B (zh) 2011-12-27 2016-08-24 格兰富控股联合股份公司 泵机组
CN108869384B (zh) * 2018-05-02 2020-05-05 江苏大学 一种具有圆柱型导流叶片的离心泵径向密封环
CN108757546B (zh) * 2018-05-02 2020-05-01 江苏大学 一种具有平板型导流叶片的离心泵径向密封环
WO2022166205A1 (fr) * 2021-02-04 2022-08-11 浙江凯博瑞汽车零部件有限公司 Structure d'étanchéité pour pompe centrifuge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697598A1 (fr) * 1992-11-03 1994-05-06 Salmson Pompes Dispositif de protection contre l'entrée de particules et de polluants solides.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR972528A (fr) * 1948-05-05 1951-01-31 Cie Des Surchauffeurs Perfectionnements aux pompes centrifuges
CH555981A (de) 1972-09-05 1974-11-15 Saurer Ag Adolph Anlage zum mischen und umwaelzen von waermetraegern.
SE502552C2 (sv) * 1994-03-16 1995-11-13 Flygt Ab Itt Tätningsanordning
US5577886A (en) * 1995-02-15 1996-11-26 Itt Flygt Ab Sealing device for pump impeller
KR970001995A (ko) * 1995-06-29 1997-01-24 배순훈 온수순환펌프
DE19613486C2 (de) * 1996-04-04 1998-12-24 Grundfos As Dichtungsausbildung für Kreiselpumpen zur Verminderung des Spaltverluststromes im Saugmundbereich des Pumpenlaufrades

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697598A1 (fr) * 1992-11-03 1994-05-06 Salmson Pompes Dispositif de protection contre l'entrée de particules et de polluants solides.

Also Published As

Publication number Publication date
DE102006024997A1 (de) 2007-12-06
EP1862674A1 (fr) 2007-12-05

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