EP0943809A2 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

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Publication number
EP0943809A2
EP0943809A2 EP99890088A EP99890088A EP0943809A2 EP 0943809 A2 EP0943809 A2 EP 0943809A2 EP 99890088 A EP99890088 A EP 99890088A EP 99890088 A EP99890088 A EP 99890088A EP 0943809 A2 EP0943809 A2 EP 0943809A2
Authority
EP
European Patent Office
Prior art keywords
bearing bracket
centrifugal pump
housing
housing part
suction
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
EP99890088A
Other languages
German (de)
English (en)
Other versions
EP0943809B1 (fr
EP0943809A3 (fr
Inventor
Siegfried Ing. Heer
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.)
TCG Unitech AG
Original Assignee
TCG Unitech 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 TCG Unitech AG filed Critical TCG Unitech AG
Publication of EP0943809A2 publication Critical patent/EP0943809A2/fr
Publication of EP0943809A3 publication Critical patent/EP0943809A3/fr
Application granted granted Critical
Publication of EP0943809B1 publication Critical patent/EP0943809B1/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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a centrifugal pump with a fixed on a drive shaft Impeller and a multi-part pump housing, which is partly made of plastic, in which a suction chamber arranged on the drive side of the impeller and a spiral one Pressure chamber are formed, one arranged in the area of the suction chamber Bearing bracket made of metallic material, and with the pump housing on the drive side has a suction flange and a housing cover in the area of the pressure chamber.
  • pumps are known from EP 208 074 A, DE 33 16 927 A or DE 43 19 618 A. known, which are partially made of plastic. In general, one is made of metal Housing part, the engine mounting u. Like. Contains a plastic spiral housing attached that surrounds the pump impeller. In this way it is possible to have a certain To achieve weight and cost savings, but such solutions need a relative large installation space. Especially when used for cooling water pumps in motor vehicles however, the installation space is naturally limited.
  • the bearing bracket as mechanical and thermal part subject to higher stress consists of metal, preferably of aluminum, magnesium or an aluminum or a magnesium alloy, whereby the storage heat is dissipated very quickly can be.
  • centrifugal pump ensures that the available space is optimally used. Furthermore, the corresponding Components stressed in an optimal way, according to their respective material. On in this way, considerable material and cost savings can be achieved.
  • the housing cover is made of plastic.
  • a special one Inexpensive and lightweight to build version provides that the Housing cover in one piece with the housing part forming the suction space at least in part is trained. Housing cover and housing part can, for example, by means of a melting process be made.
  • the bearing bracket is in one piece is formed with a drive-side mounting flange on which the Suction chamber is at least partially detachably attached housing part. This means that Possibility to combine different spiral geometries with different bearing brackets.
  • the bearing bracket can therefore also be permanently connected to the housing part.
  • Fig. 1 shows a conventional centrifugal pump 1 with a pump housing 2, which a metallic housing part 3, which the bearing bracket 3a, the suction chamber 4 and forms part of the spiral pressure chamber 5.
  • the suction chamber 4 is around Bearing bracket 3a arranged around.
  • the housing part 3 is on the side of the drive shaft 6 driven impeller 7 completed by a housing cover 8.
  • With reference numbers 9 is a coupling connected to the drive shaft.
  • the drive shaft 6 is mounted on the bearing bracket 3a via slide bearings 6a.
  • the bearing 6a is through a Mechanical seal 6b separated from suction chamber 4.
  • the impeller 7 On the entry side of the impeller 7 is a arranged with the impeller revolving suction mouth 7a, which has a streamlined Cross-sectional adjustment between the suction chamber 4 and the inlet area of the impeller 7 forms.
  • the Metallic housing part 3 is produced as a die-cast part and has a correspondingly large size Wall thicknesses, which has a negative impact on the total pump weight.
  • the centrifugal pump 21 shown in FIGS. 2 and 3 has a pump housing 22 which consists of a combination of several materials.
  • the bearing bracket 23 is designed as a separate, metallic housing part and serves to support the drive shaft 26.
  • the suction chamber 24 and the pressure chamber 25, however, are from one Plastic existing housing part 30 is formed, which with the bearing bracket 23 over Screw connections 31 is connected.
  • a housing cover 28 closes the housing part 30 in the area of the impeller 27, which is also made of plastic.
  • the housing part 30 and the housing cover 28 are connected to one another via screw connections 32.
  • a mounting flange 33 is formed, which on the one hand as a mounting plate for the centrifugal pump 21, and on the other hand for receiving the screw connection 31 for the housing part 30 is used.
  • the drive shaft 26 is on a bearing 26a, for example, a bearing Bearing bracket 23 stored.
  • the metallic bearing bracket 23 can on the one hand the bearing forces of the Take up drive shaft 26 and optimally dissipate the bearing heat.
  • an inlet-side suction mouth of the impeller 27 is designated.
  • a mechanical seal 26b is arranged between the camp 26a and the suction mouth 27a and the suction chamber 24 .
  • a drive unit, not shown, can be connected to the clutch 29 become.
  • the suction flange 24a can also expediently be made in one piece with the housing part 30 and thus be made of plastic.
  • the advantageously produced in the injection molding process Housing part 30 made of plastic is much cheaper to produce than in Fig. 1 apparent, die-cast housing part 3 and beyond also more complicated workpiece geometries of the housing part 30 made of plastic much more reliable be made as of metal.
  • Ryton with a density of approximately 1.98 kg / dm 3 can be used as the plastic material for the housing part 30 and the housing cover 28.
  • the bearing bracket 23 is advantageously made of aluminum or magnesium or one corresponding aluminum or magnesium alloy.
  • the design of the centrifugal pump according to the invention enables a cost reduction of up to about 50% and a weight reduction of up to about 30% compared to conventional ones Centrifugal pumps with a metal housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Reciprocating Pumps (AREA)
EP99890088A 1998-03-16 1999-03-11 Pompe centrifuge Expired - Lifetime EP0943809B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT46398 1998-03-16
AT0046398A AT408791B (de) 1998-03-16 1998-03-16 Kreiselpumpe

Publications (3)

Publication Number Publication Date
EP0943809A2 true EP0943809A2 (fr) 1999-09-22
EP0943809A3 EP0943809A3 (fr) 2000-07-19
EP0943809B1 EP0943809B1 (fr) 2002-06-05

Family

ID=3491302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99890088A Expired - Lifetime EP0943809B1 (fr) 1998-03-16 1999-03-11 Pompe centrifuge

Country Status (5)

Country Link
US (1) US6158958A (fr)
EP (1) EP0943809B1 (fr)
AT (2) AT408791B (fr)
DE (1) DE59901585D1 (fr)
ES (1) ES2175924T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120572A3 (fr) * 2000-01-28 2002-09-18 Bühler Motor GmbH Pompe centrifuge

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7047914B2 (en) 2001-02-15 2006-05-23 Litens Automotive Internal combustion engine combination with direct camshaft driven coolant pump
US6863035B2 (en) 2001-02-15 2005-03-08 Litens Automotive Internal combustion engine combination with direct camshaft driven coolant pump
EP2153106A1 (fr) * 2007-05-04 2010-02-17 Envirotech Pumpsystems, Inc. Boîtier de palier en deux pièces pour pompe centrifuge
KR101080770B1 (ko) * 2009-11-26 2011-11-07 기아자동차주식회사 전동식 워터펌프

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316927A1 (de) 1983-05-09 1984-11-15 Albert 5204 Lohmar Blum Kreiselpumpe
EP0208074A2 (fr) 1985-07-09 1987-01-14 Thyssen Plastik Anger Kg Pompe à eau
DE4319618A1 (de) 1993-06-14 1994-12-15 Wilo Gmbh Tauchmotorpumpe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052133A (en) * 1975-11-12 1977-10-04 The Gorman-Rupp Company Corrosion and abrasion resistant centrifugal pump
GB2047341A (en) * 1979-04-24 1980-11-26 Somme S M Centrifugal Pumps
US4822241A (en) * 1987-08-03 1989-04-18 Whirlpool Corporation Automatic dishwasher with a pump having a selectively adjustable impeller clearance
US5697767A (en) * 1991-08-23 1997-12-16 Boeing North American, Inc. Integrated turbine and pump assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316927A1 (de) 1983-05-09 1984-11-15 Albert 5204 Lohmar Blum Kreiselpumpe
EP0208074A2 (fr) 1985-07-09 1987-01-14 Thyssen Plastik Anger Kg Pompe à eau
DE4319618A1 (de) 1993-06-14 1994-12-15 Wilo Gmbh Tauchmotorpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120572A3 (fr) * 2000-01-28 2002-09-18 Bühler Motor GmbH Pompe centrifuge

Also Published As

Publication number Publication date
AT408791B (de) 2002-03-25
ES2175924T3 (es) 2002-11-16
EP0943809B1 (fr) 2002-06-05
DE59901585D1 (de) 2002-07-11
EP0943809A3 (fr) 2000-07-19
US6158958A (en) 2000-12-12
ATA46398A (de) 2001-07-15
ATE218676T1 (de) 2002-06-15

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