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EP0639243B1 - Carter de pompe - Google Patents

Carter de pompe Download PDF

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Publication number
EP0639243B1
EP0639243B1 EP93911502A EP93911502A EP0639243B1 EP 0639243 B1 EP0639243 B1 EP 0639243B1 EP 93911502 A EP93911502 A EP 93911502A EP 93911502 A EP93911502 A EP 93911502A EP 0639243 B1 EP0639243 B1 EP 0639243B1
Authority
EP
European Patent Office
Prior art keywords
housing
pump housing
pump
opening
flat
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
EP93911502A
Other languages
German (de)
English (en)
Other versions
EP0639243A1 (fr
Inventor
Oliver Schuster
Axel Riel
Kurt Seitz
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.)
KSB AG
Original Assignee
KSB AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6457702&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0639243(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KSB AG filed Critical KSB AG
Publication of EP0639243A1 publication Critical patent/EP0639243A1/fr
Application granted granted Critical
Publication of EP0639243B1 publication Critical patent/EP0639243B1/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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • 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
    • F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal
    • 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
    • F04D29/428—Discharge tongues

Definitions

  • a centrifugal pump which consists of a housing which is divided into two identical housing halves by a plane running perpendicular to the housing axis and running through the center of the housing and is preferably made of plastic.
  • the housing has a separately designed outlet connection, which is connected to a lateral outlet opening provided on the outer housing periphery. When the housing is designed, its outlet opening is displaced in the direction of the housing center axis. Furthermore, the interior of the pump housing extends into the connection area of the outlet connector.
  • the outlet opening of the housing is provided with a flange, so that the outlet nozzle can be attached to the contact surface of the housing with a correspondingly rectangular connection flange.
  • the centrifugal pump is adapted to different requirements by using differently shaped outlet connections.
  • the impeller In order to obtain the assembly advantage, the impeller must not be larger than this opening.
  • the pump consequently has a much smaller impeller diameter compared to the housing diameter and is limited in the capacity adjustment with regard to the delivery head and delivery volume.
  • the in the The centrifugal pump shown in the drawing is a sewer wheel pump and is used to deliver high volumes of contaminated and solid water. The pump is therefore not intended to build up high pressures.
  • this construction has the disadvantage that many parts have to be assembled. In addition to the housing parts, seals and connecting elements are required. Due to the way the parts are connected, flanges are necessary and gaps are formed between the parts in which deposits can form.
  • DE-A-30 00 095 shows a centrifugal pump with a pump housing which has an outlet which is arranged essentially tangentially, relative to the peripheral wall of the pump housing, the outlet having an opening with a substantially rectangular cross section.
  • This opening weakens the rigidity of the housing and offers no additional security against the deformation forces caused by the internal pressure.
  • the welding to the nozzle is complex because the weld seam runs on three levels. For this purpose, the nozzle must be designed so that it can be attached to the three-dimensional contour of the housing.
  • the invention is based on the problem of creating a uniform pump housing suitable for impellers with different delivery heights and delivery quantities, which enables simple manufacture in sheet metal technology, has high rigidity even at the connection point of the pressure connection and achieves the best possible efficiency.
  • the problem is solved according to the invention in that a flattening is carried out on the housing circumference, the flattening narrows the flow space bounded by the pump housing and downstream of the impeller towards the pump axis, and an opening for connecting the connecting piece with a uniform connection cross section is provided on the flattening.
  • the advantages that can be achieved with the invention consist in particular in that the flattening of the pump housing enables a reliable connection of the connecting piece to the housing by welding in one plane. In this way, a gap-free connection can be established, which allows the conveyance of sensitive media.
  • the flattening also increases the rigidity of the housing.
  • the pump housing is primarily developed for manufacturing using sheet metal technology, but is also suitable for manufacturing using other technologies and materials.
  • connection of the connecting piece to the housing is facilitated by increasing the area of the flattening in that sufficient space is created for automatically controlled welding. It is essential that the area at the connection cross section of the connector remains constant for the use of differently shaped connectors on a housing.
  • the development according to claim 3 enables a changed flow guidance in that an increased spur formation can be achieved without using an additional part with an arrangement of the opening and the nozzle that is asymmetrical with respect to the flattening.
  • the opening is advantageously arranged so as to be displaced counter to the direction of flow, so that the spur is enlarged.
  • the development according to claim 4 optimizes the flow control in such a way that on the one hand the transition radii from the pump housing into the flattening reinforce the spur formation and on the other hand the inflow from the housing into the nozzle is improved.
  • the radius at the front in the flow direction is preferably small and the radius at the rear in the flow direction is large.
  • the outward-facing collar on the flattening according to claim 6 is used not only to accommodate any socket with a fixed connection cross section, but also to guide the socket in the overlap region.
  • the collar also helps to stiffen the housing.
  • the neck is preferably welded to the collar, it being possible for the neck to lie inside or outside the collar. Gap-free welding can be achieved with this version by welding the socket from the inside to the collar.
  • the development according to claim 7 relates to a pump housing with a parallel arrangement of the flattening to the axis of rotation of the impeller
  • the development according to claim 8 relates to a pump housing with flattening inclined to the axis of rotation of the impeller.
  • a cylindrical pump housing (1) made of thin sheet metal on its housing periphery has a flattened portion (2) with a collar (3) for receiving a connecting piece (4).
  • the connection piece (4) is a pressure connection piece, at the end of which there is a flange (not shown).
  • the flattening (2) with two different radii of curvature (R1) and (R2) at the points (5) and (6) emerges from the cylindrical housing (1) and is at an angle of about 30 ° to the tangent of the circumference of the cylindrical housing inclined.
  • the flattening does not intersect the impeller circumference (10) here, but this can certainly be allowed.
  • the central axis of the opening (7) on the flattened portion (2) does not go through the center of the housing (1), but is offset by the distance ⁇ against the direction of flow. This increases the formation of a spur (8).
  • Fig. 2 the transition from the housing (1) into the flattening (2) is shown enlarged.
  • the transition at point (5) is carried out with a radius R1, which in this embodiment is larger than the radius R2 at point (6).
  • the spur (8) formed originated from the flattening (2).
  • the opening (7) does not extend over the entire width of the housing (1), but is at a distance from the front (11) and rear (9) housing walls.
  • the cylindrical housing (1) shown can also have a different shape, for. B. a parabolic, conical, spherical or polygonal shape.

Landscapes

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

Abstract

Un carter (1) standard de pompe pour des pompes centrifuges à rotors ayant des hauteurs de refoulement et des débits de refoulement divers peut être fabriqué aisément par une technique de façonnage de tôles, a une grande rigidité même au point de raccordement du tuyau de refoulement et permet d'atteindre le mailleur degré d'efficacité possible. Le carter de pompe (1) présente à cet effet une partie aplatie (2) à sa circonférence qui rétrécit, dans la direction de l'axe de la pompe, l'espace d'écoulement défini par le carter (1) de la pompe et situé en aval du rotor. Un orifice (7) de raccordement du tuyau (4) ayant une section transversale standard de raccordement est ménagé dans la partie aplatie du boîtier.

Claims (8)

  1. Corps de pompe (1) avec un tuyau (4) formé séparément et placé sur la périphérie du boîtier, le tuyau (4) étant relié à une ouverture (7) prévue sur la périphérie extérieure du boîtier, caractérisé par le fait qu'il y a, sur la périphérie du corps un aplatissement (2) qui rétrécit vers l'axe de la pompe l'espace d'écoulement limité par le corps de la pompe (1) et sur lequel est placée l'ouverture (7) de raccordement du tuyau (4) avec une section de raccordement standardisée.
  2. Corps de pompe (1) selon la revendication 1 dans lequel l'aire de la surface de l'aplatissement (2) est supérieure à l'aire de la surface de la section de l'ouverture (7).
  3. Corps de pompe (1) selon la revendication 2 dans lequel la normale du plan de l'aplatissement (2) au centre de l'ouverture (7) ne passe pas par l'axe de la roue.
  4. Corps de pompe (1) selon un ou plusieurs des revendications 2 à 3 dans lequel les rayons de transition (R1) et (R2) du corps de la pompe (1) dans l'aplatissement (2) sont différents.
  5. Corps de pompe (1) selon la revendication 4 dans lequel le premier rayon de transition (R2) situé dans le sens de l'écoulement est supérieur au rayon de transition (R1) suivant.
  6. Corps de pompe (1) selon une ou plusieurs des revendications 1 à 5 dans lequel l'ouverture (7) sur l'aplatissement (2) est munie d'un collet (3) dirigé vers l'extérieur pour recevoir le tuyau (4).
  7. Corps de pompe (1) selon une ou plusieurs des revendications 1 à 6 dans lequel l'aplatissement (2) est parallèle à l'axe de rotation de la roue.
  8. Corps de pompe (1) selon une ou plusieurs des renvendications 1 à 6 dans lequel l'aplatissement (2) est incliné par rapport à l'axe de rotation de la roue.
EP93911502A 1992-04-29 1993-04-24 Carter de pompe Expired - Lifetime EP0639243B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4214026A DE4214026A1 (de) 1992-04-29 1992-04-29 Pumpengehaeuse
DE4214026 1992-04-29
PCT/EP1993/000992 WO1993022564A1 (fr) 1992-04-29 1993-04-24 Carter de pompe

Publications (2)

Publication Number Publication Date
EP0639243A1 EP0639243A1 (fr) 1995-02-22
EP0639243B1 true EP0639243B1 (fr) 1996-03-27

Family

ID=6457702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93911502A Expired - Lifetime EP0639243B1 (fr) 1992-04-29 1993-04-24 Carter de pompe

Country Status (5)

Country Link
US (1) US5551839A (fr)
EP (1) EP0639243B1 (fr)
JP (1) JP2651954B2 (fr)
DE (2) DE4214026A1 (fr)
WO (1) WO1993022564A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1766235B1 (fr) * 2004-07-13 2017-04-19 Energy Recovery, Inc. Turbocompresseur à suralimentation hydraulic
DE102009010927B4 (de) 2009-02-25 2021-11-11 Wilo Se Pumpengehäuse
JP6051056B2 (ja) * 2013-01-15 2016-12-21 株式会社荏原製作所 渦巻ポンプ
CN114893422B (zh) * 2022-04-26 2024-12-24 杭州老板电器股份有限公司 一种风机及油烟机

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1109393A (en) * 1913-05-01 1914-09-01 Camden Iron Works Centrifugal pump.
GB191517473A (en) * 1915-07-31 1916-03-30 Naamlooze Vennootschap Werf Co Improvements in or relating to Centrifugal Pumps.
US1997387A (en) * 1931-07-03 1935-04-09 Mccord Radiator & Mfg Co Nozzle for hand driers
DE839598C (de) * 1944-05-12 1952-05-23 Bergedorfer Eisenwerk Ag Pumpe in sparstoffarmer Ausfuehrung
GB580079A (en) * 1945-02-02 1946-08-26 Dudley George Jones Improvements in and relating to centrifugal pumps
NL85520C (fr) * 1956-05-15
US2999628A (en) * 1957-08-26 1961-09-12 Joseph S Crombie Low pressure compressor
GB1185313A (en) * 1966-05-05 1970-03-25 Speedwell Res Ltd Improvements in or relating to Centrifugal Pumps.
DD98343A1 (fr) * 1972-03-15 1973-06-12
GB2047341A (en) * 1979-04-24 1980-11-26 Somme S M Centrifugal Pumps
DE2940029C2 (de) * 1979-10-03 1984-03-29 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Kreiselpumpengehäuse
DE3145409A1 (de) * 1981-11-16 1983-05-26 Philipp Hilge Gmbh, 6501 Bodenheim Spiralgehaeuse fuer stroemungsmaschinen und ihre herstellung
DE3316927A1 (de) * 1983-05-09 1984-11-15 Albert 5204 Lohmar Blum Kreiselpumpe
DE3517498C3 (de) * 1985-05-15 1993-12-02 Klein Schanzlin & Becker Ag Kreiselpumpengehäuse
US5133642A (en) * 1988-02-29 1992-07-28 Ebara Corporation Pipe joint for pump
JPH07103878B2 (ja) * 1989-01-19 1995-11-08 株式会社荏原製作所 ポンプケーシング及びその製造方法
JP2809487B2 (ja) * 1989-07-05 1998-10-08 株式会社荏原製作所 遠心ポンプケーシング
JPH0758080B2 (ja) * 1989-07-15 1995-06-21 株式会社荏原製作所 板金製うず巻ポンプケーシング
IT1234504B (it) * 1989-08-18 1992-05-18 Tiziano Carretta Cassa statorica in lamiera metallica, particolarmente per pompe radiali centrifughe

Also Published As

Publication number Publication date
JP2651954B2 (ja) 1997-09-10
EP0639243A1 (fr) 1995-02-22
DE59302066D1 (de) 1996-05-02
DE4214026A1 (de) 1993-11-04
JPH07502323A (ja) 1995-03-09
US5551839A (en) 1996-09-03
WO1993022564A1 (fr) 1993-11-11

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