EP0739452B1 - Mit entlastungsöffnungen ausgestattetes kreiselpumpenlaufrad aus blech - Google Patents

Mit entlastungsöffnungen ausgestattetes kreiselpumpenlaufrad aus blech Download PDF

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Publication number
EP0739452B1
EP0739452B1 EP95906291A EP95906291A EP0739452B1 EP 0739452 B1 EP0739452 B1 EP 0739452B1 EP 95906291 A EP95906291 A EP 95906291A EP 95906291 A EP95906291 A EP 95906291A EP 0739452 B1 EP0739452 B1 EP 0739452B1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
pump impeller
opening
impeller
sheet metal
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
EP95906291A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0739452A1 (de
Inventor
Christoph Jäger
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
Application filed by KSB AG filed Critical KSB AG
Publication of EP0739452A1 publication Critical patent/EP0739452A1/de
Application granted granted Critical
Publication of EP0739452B1 publication Critical patent/EP0739452B1/de
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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer

Definitions

  • the invention relates to a formed from sheet metal Centrifugal pump impeller, which is in the pressure side cover plate has arranged relief openings.
  • FR-A-972 528 is already a centrifugal pump impeller known, the relief openings in their mouth area are guided such that the relief current in one acute angle to the main flow of the impeller. By the main current was causing the discharge current thus greatly reduced.
  • the relief openings had one angular course, were in this form only in one massive cover plate, but not in a sheet metal one Realize impeller.
  • the object underlying the invention is a Centrifugal pump impeller to create from sheet metal, its low Relief openings to be manufactured Relief flow into the flow in the impeller inlet steer in a direction that is not particularly harmful.
  • the object is achieved in that the relief openings each by at least one in the Sheet of the cover plate shaped bulge and a with it connected opening are formed, the bulges and the opening have a course that the relief current in directs a direction roughly parallel to the main flow.
  • the production of the relief openings can be done easily Way, optionally simultaneously with one or more further shaping measures for the production of the impeller, accomplish.
  • the individual relief opening can be used one, embossed into the cover plate from only one side Bulge or with two opposite one another Bulges are formed.
  • the one at the raised end Bulge or opening between two bulges can already arise during the formation of the bulges, so that a further step is not necessary for this.
  • the centrifugal pump impeller 1 made of sheet metal is with a Hub 2 arranged on a shaft, not shown.
  • the Centrifugal pump impeller 1 has several over its circumference evenly distributed impeller blades 3, which between a front, suction-side cover plate 4 and a rear, pressure-side cover plate 5 are arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP95906291A 1994-01-12 1995-01-04 Mit entlastungsöffnungen ausgestattetes kreiselpumpenlaufrad aus blech Expired - Lifetime EP0739452B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4400633A DE4400633A1 (de) 1994-01-12 1994-01-12 Mit Entlastungsöffnungen ausgestattetes Kreiselpumpenlaufrad aus Blech
DE4400633 1994-01-12
PCT/EP1995/000016 WO1995019503A1 (de) 1994-01-12 1995-01-04 Mit entlastungsöffnungen ausgestattetes kreiselpumpenlaufrad aus blech

Publications (2)

Publication Number Publication Date
EP0739452A1 EP0739452A1 (de) 1996-10-30
EP0739452B1 true EP0739452B1 (de) 1998-11-04

Family

ID=6507746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95906291A Expired - Lifetime EP0739452B1 (de) 1994-01-12 1995-01-04 Mit entlastungsöffnungen ausgestattetes kreiselpumpenlaufrad aus blech

Country Status (4)

Country Link
EP (1) EP0739452B1 (da)
DE (2) DE4400633A1 (da)
DK (1) DK0739452T3 (da)
WO (1) WO1995019503A1 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140108389A (ko) * 2013-02-26 2014-09-11 현대중공업 주식회사 밸런싱홀을 구비하는 원심 펌프

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4561852B2 (ja) 2008-03-26 2010-10-13 株式会社日立プラントテクノロジー 羽根車
JP2013148075A (ja) * 2012-01-23 2013-08-01 Mitsubishi Heavy Ind Ltd 遠心式流体機械

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518179C (de) * 1929-09-20 1931-02-12 Hans Reinecke Entlastung der innerhalb der rueckseitigen Dichtungsringe der Laufraeder umlaufenderhydraulischer Maschinen befindlichen Raeume
FR972528A (fr) * 1948-05-05 1951-01-31 Cie Des Surchauffeurs Perfectionnements aux pompes centrifuges
US3632220A (en) * 1970-08-27 1972-01-04 Chrysler Corp Coolant pump
DE3517499A1 (de) * 1985-05-15 1986-11-20 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Laufrad
JPH05288803A (ja) * 1992-04-14 1993-11-05 Fujitsu Ltd Ｉｃトレー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140108389A (ko) * 2013-02-26 2014-09-11 현대중공업 주식회사 밸런싱홀을 구비하는 원심 펌프

Also Published As

Publication number Publication date
DE4400633A1 (de) 1995-07-13
DE59504143D1 (de) 1998-12-10
EP0739452A1 (de) 1996-10-30
WO1995019503A1 (de) 1995-07-20
DK0739452T3 (da) 1999-07-19

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