EP0171514B1 - Kreiselpumpe mit einem Spaltrohrtopf - Google Patents

Kreiselpumpe mit einem Spaltrohrtopf Download PDF

Info

Publication number
EP0171514B1
EP0171514B1 EP85105625A EP85105625A EP0171514B1 EP 0171514 B1 EP0171514 B1 EP 0171514B1 EP 85105625 A EP85105625 A EP 85105625A EP 85105625 A EP85105625 A EP 85105625A EP 0171514 B1 EP0171514 B1 EP 0171514B1
Authority
EP
European Patent Office
Prior art keywords
cap
pump
wall
centrifugal pump
pump impeller
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
Application number
EP85105625A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0171514A1 (de
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.)
CP Pumpen AG
Original Assignee
CP Pumpen 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 CP Pumpen AG filed Critical CP Pumpen AG
Priority to AT85105625T priority Critical patent/ATE32931T1/de
Publication of EP0171514A1 publication Critical patent/EP0171514A1/de
Application granted granted Critical
Publication of EP0171514B1 publication Critical patent/EP0171514B1/de
Expired legal-status Critical Current

Links

Images

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
    • 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

Definitions

  • the invention relates to a centrifugal pump according to the preamble of claim 1.
  • centrifugal pump Such a centrifugal pump is known from DE-A-1453760.
  • This centrifugal pump has a complex, multi-part structure and requires high precision.
  • the canned pot is loaded by an auxiliary bearing and a floating operating bearing of the external rotor together with the pump impeller; he must be strong enough to do this. This is countered by the need for a small magnetic pole spacing, which requires metal as the wall material. As a result, eddy current losses are inevitable. Chemical resistance is also problematic.
  • the invention has for its object to produce an economically advantageously producible (i.e. uncomplicated, with few parts and not requiring excessive precision) centrifugal pump with canned pot, which has a better efficiency (i.e. avoids eddy current losses and despite moderate precision requirements a favorable magnetic pole distance, as well as a low-friction bearing) Pump wheel), which centrifugal pump should be particularly suitable as a chemical process pump (i.e., inert to chemicals and resistant to abrasion from pumped solids).
  • the pump impeller including the external rotor attached to it, is mounted on an axis fastened in the intake port of the pump housing.
  • the canned pot connected only at its rim to other pump parts therefore only needs to absorb forces that originate from the pumped medium, the pumped medium generating at least predominantly compressive stresses in the pot wall during operation of the pump.
  • the canned pot can thus be optimized with regard to its function as a sealing component, with the least possible impairment of the magnetic force transmission between the rotors.
  • the canned pot consists of electrically non-conductive ceramic material. This reliably prevents eddy current losses.
  • the canned pot can nevertheless have such a small pot wall thickness that a favorable magnetic pole distance is possible.
  • Such electrically non-conductive ceramic materials can be chemically inert even against hot pumped media and they can have high abrasion resistance against pumped-in solids.
  • the tensile stresses occurring in the bottom of the pot and / or in the rim of the pot can be absorbed there cheaply with a simple construction.
  • the wall thicknesses can safely be considerably larger than in the pot wall.
  • the bottom of the pot is shaped inwards, starting from the pump impeller to the motor, not only can the occurrence of tensile forces in the pot wall be at least largely avoided, but it is possible thanks to the definition of the bearing of the impeller and its external rotor, the impeller including the to better balance the associated outrunner.
  • a canned pot 2 is inserted in a sealing manner, as a result of which the pump housing is tightly divided into a pump chamber 3 and a motor chamber 4, without the need for moving seals.
  • the canned pot 2 has a pot wall 20 made of electrically non-conductive material and, in the example shown, consists of a piece of ceramic material.
  • the pot wall 20 must be electrically non-conductive, while this is not a condition for the pot bottom and possibly also for the pot rim, but should often be the case with one-piece production.
  • the pot wall 20 is practically only exposed to compressive stresses from the pumped medium, which is conducive to its thin-walled configuration despite the use of electrically non-conductive material. Together with the training from electrically non-conductive material, this results in an optimization of the efficiency.
  • a radial pump impeller 5 Provided in the pump chamber 3 is a radial pump impeller 5, the suction opening 50 of which is opposite the suction nozzle 8 of the pump housing 1, while its radial channels 51 convey to the pressure nozzle 11 of the pump housing 1. No other openings are provided on the pump impeller and it is only supported radially on the axis 7.
  • the space portion of the pump chamber 3 located on the front side 52 of the pump impeller is connected to the intake port 8 and, on the other hand, to the pressure port 11 via the gap between the throttle rings 520 and 521 (the latter is held by a retaining ring 522).
  • the space portion of the pump chamber 3 arranged on the rear side 53 of the pump impeller 5 is connected around the outer rotor 6 to the pressure port 11 and through the compensating channel 71 in the axis 7 to the intake port 8.
  • a throttle ring 530 is attached by means of retaining ring 531 to the rear 53 of the pump impeller.
  • the pump impeller 5 is mechanically firmly connected to the outer rotor 6, the inner rotor 9, which carries permanent magnets 90, is connected to the motor 10, which is equivalent to a reversal of the conventional design.
  • the pot base 21 is arched towards the motor 10, which, in addition to favorable static properties, also permits particularly good balancing of the impeller / external rotor complex.
  • the construction according to the invention permits the attachment of an external lubrication channel 75 for the ceramic slide bearing 70.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP85105625A 1984-07-16 1985-05-08 Kreiselpumpe mit einem Spaltrohrtopf Expired EP0171514B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85105625T ATE32931T1 (de) 1984-07-16 1985-05-08 Kreiselpumpe mit einem spaltrohrtopf.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3450/84 1984-07-16
CH345084 1984-07-16

Publications (2)

Publication Number Publication Date
EP0171514A1 EP0171514A1 (de) 1986-02-19
EP0171514B1 true EP0171514B1 (de) 1988-03-09

Family

ID=4256204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105625A Expired EP0171514B1 (de) 1984-07-16 1985-05-08 Kreiselpumpe mit einem Spaltrohrtopf

Country Status (5)

Country Link
US (1) US4648808A (enrdf_load_stackoverflow)
EP (1) EP0171514B1 (enrdf_load_stackoverflow)
JP (1) JPS6134391A (enrdf_load_stackoverflow)
AT (1) ATE32931T1 (enrdf_load_stackoverflow)
DE (1) DE3561834D1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8162630B2 (en) 2006-03-31 2012-04-24 H. Wernert & Co. Ohg Rotary pump with coaxial magnetic coupling

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672820A5 (enrdf_load_stackoverflow) * 1986-03-21 1989-12-29 Ernst Hauenstein
JPS6352992U (enrdf_load_stackoverflow) * 1986-09-25 1988-04-09
DE3636404A1 (de) * 1986-10-25 1988-04-28 Richter Chemie Technik Gmbh Magnetkreiselpumpe
US4775291A (en) * 1987-07-27 1988-10-04 Binks Manufacturing Company Magnetic clutch drive and thrust balancing mechanism for rotary pumps
FR2630071B1 (fr) * 1988-04-18 1992-02-21 Valeo Circuit hydraulique de freinage, notamment pour vehicules automobiles
DE3907068A1 (de) * 1989-03-04 1990-09-20 Atlas Copco Energas Turbomaschine mit stirnradgetriebe
US5129795A (en) * 1991-05-31 1992-07-14 Powerdyne Corporation Motor driven pump
GB2263312A (en) * 1992-01-17 1993-07-21 Stork Pompen Vertical pump with magnetic coupling.
DE9201412U1 (de) * 1992-02-05 1992-05-07 Qvf Glastechnik Gmbh, 6200 Wiesbaden Magnetkupplungspumpe, insbesondere zur Förderung aggressiver und umweltbelastender Medien
US5269664A (en) * 1992-09-16 1993-12-14 Ingersoll-Dresser Pump Company Magnetically coupled centrifugal pump
JP2654910B2 (ja) * 1993-11-12 1997-09-17 日本ピラー工業株式会社 マグネット駆動ポンプ
US5547350A (en) * 1994-12-15 1996-08-20 Dresser-Rand Company Modular shaftless compressor
US5562406A (en) * 1995-01-11 1996-10-08 Ansimag Inc. Seal assembly for fluid pumps and method for detecting leaks in fluid pumps or fluid containment devices
FR2733010B1 (fr) * 1995-04-14 1997-07-04 Ceramiques Et Composites Sa Pompe centrifuge a entrainement magnetique
JP2005233162A (ja) * 2004-02-23 2005-09-02 Bosch Automotive Systems Corp 燃料ポンプ、燃料供給装置
DE102004058533B4 (de) * 2004-12-04 2011-04-21 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Pumpe für Flüssigkeiten unter Überdruck
CN102287403B (zh) * 2011-08-18 2013-10-16 兖矿国泰乙酰化工有限公司 磁力泵防涡隔离罩
US8905728B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with permanent magnet coupling inside the impeller
US8905729B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with electro-magnet coupling inside the impeller
DE102013007849A1 (de) * 2013-05-08 2014-11-13 Ksb Aktiengesellschaft Pumpenanordnung
DE102014006568A1 (de) * 2013-05-08 2014-11-13 Ksb Aktiengesellschaft Pumpenanordnung und Verfahren zum Herstellen eines Spalttopfes der Pumpenanordnung
US9771938B2 (en) * 2014-03-11 2017-09-26 Peopleflo Manufacturing, Inc. Rotary device having a radial magnetic coupling
US9920764B2 (en) 2015-09-30 2018-03-20 Peopleflo Manufacturing, Inc. Pump devices
USD878305S1 (en) * 2017-09-26 2020-03-17 Molex, Llc Sealing shroud
DE102019122042A1 (de) * 2019-08-16 2021-02-18 HELLA GmbH & Co. KGaA Pumpvorrichtung

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1999163A (en) * 1929-06-04 1935-04-23 Allen Sherman Hoff Co Centrifugal pump
GB888514A (en) * 1958-06-28 1962-01-31 Pumpindustri Ab Magnetically driven fluid pump
DE1453760A1 (de) * 1962-01-08 1969-01-09 Fuss Und Stahl Veredlung Gmbh Pumpe mit einem schnell rotierend angetriebenen Laufrad,insbesondere Kreiselpumpe
DE1302473C2 (de) * 1963-04-03 1975-01-09 Sealed Motor Construction Co. Ltd., Bridgwater, Somerset (Grossbritannien) Elektrisch angetriebene umwaelzpumpe
US3520642A (en) * 1968-10-29 1970-07-14 Process Ind Inc Motor driven pump
US3597117A (en) * 1969-01-10 1971-08-03 Rotorn Inc Fan for narrow environments
DE1943124A1 (de) * 1969-08-25 1971-03-04 Elektrotechnik Maschb A Loell Fluessigkeitspumpe,insbesondere Umwaelzpumpe fuer Warmwasser-Heizungsanlagen
JPS5148723Y2 (enrdf_load_stackoverflow) * 1972-04-19 1976-11-25
DE2254265C3 (de) * 1972-11-06 1980-06-12 Franz 4630 Bochum Klaus Stopfbuchslose Chemiekreiselpumpe
US4043706A (en) * 1973-06-05 1977-08-23 Alan John Walker Bearing support structure for electro-magnet driven pump
DE2359456A1 (de) * 1973-11-29 1975-06-05 Leybold Heraeus Gmbh & Co Kg Turbomolekularvakuumpumpe mit gasgelagertem rotor
JPS5114804U (enrdf_load_stackoverflow) * 1974-07-18 1976-02-03
GB1496035A (en) * 1974-07-18 1977-12-21 Iwaki Co Ltd Magnetically driven centrifugal pump
JPS51111902A (en) * 1975-03-26 1976-10-02 Iwaki:Kk Magnet pump
FR2311201A1 (fr) * 1975-05-12 1976-12-10 Siebec Filtres Perfectionnement apporte aux pompes a entrainement magnetique
US4120018A (en) * 1977-01-27 1978-10-10 Dominion Auto Accessories Limited Stop, tail and signal lamp
DE2745818A1 (de) * 1977-10-12 1979-04-26 Bosch Gmbh Robert Kraftstoffoerderpumpe
US4207485A (en) * 1978-04-24 1980-06-10 The Garrett Corporation Magnetic coupling
JPS58138294A (ja) * 1982-02-10 1983-08-17 Ngk Insulators Ltd マグネツトポンプの軸受部冷却水供給装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8162630B2 (en) 2006-03-31 2012-04-24 H. Wernert & Co. Ohg Rotary pump with coaxial magnetic coupling

Also Published As

Publication number Publication date
EP0171514A1 (de) 1986-02-19
JPH0551079B2 (enrdf_load_stackoverflow) 1993-07-30
US4648808A (en) 1987-03-10
ATE32931T1 (de) 1988-03-15
JPS6134391A (ja) 1986-02-18
DE3561834D1 (en) 1988-04-14

Similar Documents

Publication Publication Date Title
EP0171514B1 (de) Kreiselpumpe mit einem Spaltrohrtopf
DE3536092C2 (enrdf_load_stackoverflow)
DE2159025C2 (de) Kraftstofförderaggregat, bestehend aus einer Seitenkanalpumpe und einem Elektromotor
DE2223087C2 (de) Flügelzellenverdichter
EP0171515B1 (de) Kreiselpumpe mit Spaltrohrtopf
EP2908407B1 (de) Elektrischer Antriebsmotor, Pumpe und Haushaltsgerät mit einer solchen Pumpe
EP0392975A1 (de) Rotierender Spirallader für kompressible Medien
EP1719914B1 (de) Kreiselpumpe mit Magnetkupplung
WO2006119843A1 (de) Pumpenaggregat
EP0170175A2 (de) Seitenkanalpumpe mit Kräfteausgleich
WO2007033818A1 (de) Spaltrohr
WO2020074318A1 (de) Pumpe, insbesondere für einen flüssigkeitskreislauf in einem fahrzeug
EP1292774B1 (de) Seitenkanalpumpe
DE3517828A1 (de) Pumpengehaeuse
DE3622963A1 (de) Pumpe, vorzugsweise behaelterpumpe
EP2721301B1 (de) Tauchpumpe und verfahren zum zusammenbau einer tauchpumpe
DE3303460A1 (de) Selbstansaugende seitenkanalpumpe
DE3117557A1 (de) Kuehlwasserpumpe fuer einen bootsantrieb
DE29912577U1 (de) Spalttopfpumpe
DE69415269T2 (de) Zusammenbau einer Brennstoffpumpe
EP1348078A1 (de) Förderpumpe
DE4238132C2 (de) Kreiselpumpe, insbesondere Wasserpumpe für Kraftfahrzeuge
DE19948171A1 (de) Elektrokraftstoffpumpe sowie Pumpenwerk für eine Kraftstoffpumpe
EP1211422B1 (de) Rotor eines Spaltmotors für eine Spaltrohrmotorpumpe
DE3042840C2 (de) Seitenkanal-Ringverdichter

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

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

17P Request for examination filed

Effective date: 19860324

17Q First examination report despatched

Effective date: 19860821

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 FR GB IT LI NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19880309

Ref country code: BE

Effective date: 19880309

REF Corresponds to:

Ref document number: 32931

Country of ref document: AT

Date of ref document: 19880315

Kind code of ref document: T

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

Ref country code: SE

Effective date: 19880331

REF Corresponds to:

Ref document number: 3561834

Country of ref document: DE

Date of ref document: 19880414

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19880508

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
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: 19881124

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

Ref country code: NL

Payment date: 20040505

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20040510

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20040520

Year of fee payment: 20

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

Ref country code: CH

Payment date: 20040701

Year of fee payment: 20

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 EXPIRATION OF PROTECTION

Effective date: 20050508

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20050508