EP0237868A3 - Radial or axial flow centrifugal pump - Google Patents

Radial or axial flow centrifugal pump Download PDF

Info

Publication number
EP0237868A3
EP0237868A3 EP87103057A EP87103057A EP0237868A3 EP 0237868 A3 EP0237868 A3 EP 0237868A3 EP 87103057 A EP87103057 A EP 87103057A EP 87103057 A EP87103057 A EP 87103057A EP 0237868 A3 EP0237868 A3 EP 0237868A3
Authority
EP
European Patent Office
Prior art keywords
pump
impeller
centrifugal pump
radial
allows
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.)
Granted
Application number
EP87103057A
Other languages
German (de)
Other versions
EP0237868A2 (en
EP0237868B1 (en
Inventor
Ernst Hauenstein
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT87103057T priority Critical patent/ATE60411T1/en
Publication of EP0237868A2 publication Critical patent/EP0237868A2/en
Publication of EP0237868A3 publication Critical patent/EP0237868A3/en
Application granted granted Critical
Publication of EP0237868B1 publication Critical patent/EP0237868B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/027—Details of the magnetic circuit
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0416—Axial thrust balancing balancing pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/404—Transmission of power through magnetic drive coupling
    • F05B2260/4041—Transmission of power through magnetic drive coupling the driven magnets encircling the driver magnets

Abstract

A centrifugal pump of the magneto coupling type in which an isolation shell separates the pump side from the driver side includes an auxiliary impeller arranged additionally to the pump impeller proper. This allows a decreasing of the pressure in the spaces at the reverse side of the pump impeller and thus a balancing of the thrust forces. This effect can be controlled by control means located in the casing at the outer end of the feeding channels of the auxiliary impeller. This allows the provision of a pump of a simple design in which e.g. the isolation shell can be made with an extremely small wall thickness and in which an open or closed pump impeller can be supported without any thrust generated difficulties.
EP87103057A 1986-03-21 1987-03-04 Radial or axial flow centrifugal pump Expired - Lifetime EP0237868B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87103057T ATE60411T1 (en) 1986-03-21 1987-03-04 RADIAL OR AXIAL CENTRIFUGAL PUMP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1160/86A CH672820A5 (en) 1986-03-21 1986-03-21
CH1160/86 1986-03-21

Publications (3)

Publication Number Publication Date
EP0237868A2 EP0237868A2 (en) 1987-09-23
EP0237868A3 true EP0237868A3 (en) 1988-01-20
EP0237868B1 EP0237868B1 (en) 1991-01-23

Family

ID=4203879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103057A Expired - Lifetime EP0237868B1 (en) 1986-03-21 1987-03-04 Radial or axial flow centrifugal pump

Country Status (7)

Country Link
US (1) US4793777A (en)
EP (1) EP0237868B1 (en)
JP (1) JP2535004B2 (en)
AT (1) ATE60411T1 (en)
CH (1) CH672820A5 (en)
DE (1) DE3767517D1 (en)
ES (1) ES2020520B3 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6352992U (en) * 1986-09-25 1988-04-09
JP2519466Y2 (en) * 1990-10-12 1996-12-04 株式会社帝国電機製作所 Gas seal type motor pump
FR2698667B1 (en) * 1992-11-30 1995-02-17 Europ Propulsion Centrifugal pump with open impeller.
FR2715442B1 (en) * 1994-01-26 1996-03-01 Lorraine Carbone Centrifugal pump with magnetic drive.
FR2733010B1 (en) * 1995-04-14 1997-07-04 Ceramiques Et Composites Sa MAGNETICALLY DRIVEN CENTRIFUGAL PUMP
DE59911579D1 (en) * 1998-08-21 2005-03-17 Cp Pumpen Ag Zofingen Magnetically coupled centrifugal pump
US6135728A (en) * 1998-10-29 2000-10-24 Innovative Mag-Drive, L.L.C. Centrifugal pump having an axial thrust balancing system
US6234748B1 (en) 1998-10-29 2001-05-22 Innovative Mag-Drive, L.L.C. Wear ring assembly for a centrifugal pump
US6293772B1 (en) 1998-10-29 2001-09-25 Innovative Mag-Drive, Llc Containment member for a magnetic-drive centrifugal pump
US6123507A (en) * 1998-11-30 2000-09-26 Smith & Loveless, Inc. Single port impeller
DE60129590T3 (en) * 2001-06-05 2012-01-12 Iwaki Co. Ltd. MAGNET PUMP
US7101158B2 (en) 2003-12-30 2006-09-05 Wanner Engineering, Inc. Hydraulic balancing magnetically driven centrifugal pump
JP4959424B2 (en) * 2007-05-31 2012-06-20 勇 青谷 Pump device
US8506259B2 (en) 2009-12-23 2013-08-13 Solar Turbines Inc. Fluid compression system
US8905729B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with electro-magnet coupling inside the impeller
US8905728B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with permanent magnet coupling inside the impeller
US9488184B2 (en) 2012-05-02 2016-11-08 King Abdulaziz City For Science And Technology Method and system of increasing wear resistance of a part of a rotating mechanism exposed to fluid flow therethrough
DE102014006568A1 (en) * 2013-05-08 2014-11-13 Ksb Aktiengesellschaft Pump arrangement and method for producing a split pot of the pump assembly
DE102013007849A1 (en) * 2013-05-08 2014-11-13 Ksb Aktiengesellschaft pump assembly
US9771938B2 (en) * 2014-03-11 2017-09-26 Peopleflo Manufacturing, Inc. Rotary device having a radial magnetic coupling
JP6671048B2 (en) * 2015-11-12 2020-03-25 パナソニックＩｐマネジメント株式会社 pump
MX2018006890A (en) * 2015-12-07 2018-11-09 Fluid Handling Llc Opposed impeller wear ring undercut to offset generated axial thrust in multi-stage pump.
DE202016105312U1 (en) * 2016-09-23 2018-01-09 Speck Pumpen Verkaufsgesellschaft Gmbh feed pump
US10746196B2 (en) * 2017-04-09 2020-08-18 Technology Commercialization Corp. Methods and devices for reducing circumferential pressure imbalances in an impeller side cavity of rotary machines

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT242520B (en) * 1963-04-09 1965-09-27 Philip Pensabene Electrically driven pump
AT262774B (en) * 1963-12-14 1968-06-25 Richard Halm Liquid pump
US3881840A (en) * 1973-09-05 1975-05-06 Neratoom Centrifugal pump for processing liquids containing abrasive constituents, more particularly, a sand pump or a waste-water pumper
DE2620502A1 (en) * 1975-05-12 1976-11-25 Siebec Filtres MAGNETIC WATER PUMP
EP0171515A1 (en) * 1984-07-16 1986-02-19 CP Pumpen AG Centrifugal pump with an isolating tubular air gap cap

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209109A (en) * 1935-11-30 1940-07-23 Firm A W Mackensen Centrifugal pump with axial movement of the shaft
US2361521A (en) * 1943-11-01 1944-10-31 W S Darley & Company Centrifugal pump
US2942555A (en) * 1957-04-15 1960-06-28 Rinaldo F Pezzillo Combination pump and motor
US3589827A (en) * 1969-08-12 1971-06-29 Sergei Stepanovich Gerasimenko Centrifugal leakproof fluid pump
JPS5055902A (en) * 1973-09-20 1975-05-16
JPS527002A (en) * 1975-07-07 1977-01-19 Mitsubishi Heavy Ind Ltd Method of removing thrust of impeller in high pressure multistage pump
WO1984004945A1 (en) * 1983-06-08 1984-12-20 Sundstrand Corp Centrifugal pump
IT8420754A0 (en) * 1984-05-02 1984-05-02 Pompe Ing Calella S P A COMPACT AGGREGATE FOR FULLY SUBMERGED CENTRIFUGAL PUMP/ELECTRIC MOTOR FOR PUMPING AGGRESSIVE LIQUIDS AND/OR CONTAINING SOLID SUBSTANCES.
DE3561834D1 (en) * 1984-07-16 1988-04-14 Cp Pumpen Ag Centrifugal pump with an isolating tubular air gap cap

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT242520B (en) * 1963-04-09 1965-09-27 Philip Pensabene Electrically driven pump
AT262774B (en) * 1963-12-14 1968-06-25 Richard Halm Liquid pump
US3881840A (en) * 1973-09-05 1975-05-06 Neratoom Centrifugal pump for processing liquids containing abrasive constituents, more particularly, a sand pump or a waste-water pumper
DE2620502A1 (en) * 1975-05-12 1976-11-25 Siebec Filtres MAGNETIC WATER PUMP
EP0171515A1 (en) * 1984-07-16 1986-02-19 CP Pumpen AG Centrifugal pump with an isolating tubular air gap cap

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Sektion P,Q, Woche 8343, 7 Dezember 1983 DERWENT PUBLICATIONS LTD. London, Q5 * SU 981 690 (A) (BYKO/) * *

Also Published As

Publication number Publication date
US4793777A (en) 1988-12-27
EP0237868A2 (en) 1987-09-23
JPS62233493A (en) 1987-10-13
DE3767517D1 (en) 1991-02-28
EP0237868B1 (en) 1991-01-23
ATE60411T1 (en) 1991-02-15
CH672820A5 (en) 1989-12-29
JP2535004B2 (en) 1996-09-18
ES2020520B3 (en) 1991-08-16

Similar Documents

Publication Publication Date Title
EP0237868A3 (en) Radial or axial flow centrifugal pump
ATE29275T1 (en) CENTRIFUGAL PUMP WITH CANNED TUBE.
AU7812987A (en) Centrifugal pump
SE8205547L (en) WETTING PUMP WITH SHOOTERS IN THE WETTING
JPS54132063A (en) Lock-up torque converter
SE8700769D0 (en) A ROTARY PUMP FOR LIQUIDS
SU1021823A1 (en) Shaft radial bearing
EP0298615A3 (en) Double-diaphragm pump
GB1100362A (en) A hydraulic intermeshing screw pump or motor
RU2235910C1 (en) Axial-flow fan
AUPP804799A0 (en) Jet propulsion pump
JPS5554766A (en) Equal pressurizing construction of shaft seal
ES283243U (en) Safety steering shaft comprising inner shaft and outer tube.
KR930000905A (en) Hot water boiler with separate or combined motor
GB2179098A (en) Spiral case for single-stage centrifugal pumps with a twin-inlet runner wheel
FR2441115A1 (en) Distributor for hydraulic motor - uses grooved rotor in bore with radial ports and groove connects three ports
AU5313198A (en) Electric motor frame suitable for being coupled to a pump
GB1455418A (en) Fluidic devices
JPS57163148A (en) Electric motor type fuel pump
GB1073064A (en) Centrifugal pump units
JPS5560686A (en) Positive-displacement fluid compressor
JPS5598692A (en) Multistage centrifugal fluid machine
JPS55134789A (en) Mechanism for fluid passage through into rotary bar
JPS6314895U (en)
JPS57107418A (en) Pinion shaft

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: F04D 13/06

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19880713

17Q First examination report despatched

Effective date: 19890529

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 60411

Country of ref document: AT

Date of ref document: 19910215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3767517

Country of ref document: DE

Date of ref document: 19910228

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C. S.R.L.

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 87103057.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19950316

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950419

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950523

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960305

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960331

Ref country code: CH

Effective date: 19960331

Ref country code: BE

Effective date: 19960331

BERE Be: lapsed

Owner name: HAUENSTEIN ERNST

Effective date: 19960331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970324

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970327

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19970328

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980305

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980331

EUG Se: european patent has lapsed

Ref document number: 87103057.3

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990222

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19990331

Year of fee payment: 13

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000304

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20001001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050304

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060302

Year of fee payment: 20