EP0207457B1 - Wasserpumpenlaufrad - Google Patents

Wasserpumpenlaufrad Download PDF

Info

Publication number
EP0207457B1
EP0207457B1 EP86108761A EP86108761A EP0207457B1 EP 0207457 B1 EP0207457 B1 EP 0207457B1 EP 86108761 A EP86108761 A EP 86108761A EP 86108761 A EP86108761 A EP 86108761A EP 0207457 B1 EP0207457 B1 EP 0207457B1
Authority
EP
European Patent Office
Prior art keywords
hub
water pump
pump impeller
plastic
shaped
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
EP86108761A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0207457A1 (de
Inventor
K. Gerd Friedrichs
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.)
KLIFA FAHRZEUGTEILE GmbH and Co
Original Assignee
KLIFA FAHRZEUGTEILE GmbH and Co
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 KLIFA FAHRZEUGTEILE GmbH and Co filed Critical KLIFA FAHRZEUGTEILE GmbH and Co
Publication of EP0207457A1 publication Critical patent/EP0207457A1/de
Application granted granted Critical
Publication of EP0207457B1 publication Critical patent/EP0207457B1/de
Expired 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
    • F04D29/2227—Construction and assembly for special materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/915—Pump or portion thereof by casting or molding

Definitions

  • the invention relates to a water pump impeller for a cooling water pump in an internal combustion engine with a metal hub for mounting on a shaft, with a metallic reinforcing disk coaxially formed on one end face of the metal hub and surrounded by plastic, with deflection vanes which are molded from plastic in the outer peripheral region of the water pump impeller, and with plastic parts molded in the longitudinal direction beyond the hub.
  • Water pump impellers are generally known and are used in pumps which are used to transport the cooling water for motor cooling in motor vehicles. Because of the special temperature loads for this purpose, at which temperatures of around -40 ° C to + 130 ° C can occur, special conditions are imposed on the materials and the design.
  • the use of gray cast iron or brass for a water pump impeller has the disadvantage that they tend to cavitate, i.e. destruction of the impeller blades, which leads to failure of the pump.
  • Another disadvantage is that the surface is rough, which increases the flow resistance.
  • a water pump impeller for use in internal combustion engines is known from US Pat. No. 3,251,307, which has a metal hub and a metallic reinforcing disk which is coaxially formed thereon and is oriented essentially perpendicular to the hub axis.
  • the reinforcing disk is embedded in a plastic body together with the outer surface of the hub.
  • plastic parts which are shaped in the longitudinal direction of the hub beyond the hub edges end flush with the inner surface of the hub.
  • the plastic body is formed in the radial direction beyond the reinforcing disk, and deflection blades are formed in the plastic part in this outer peripheral region.
  • the invention has for its object to provide a water pump impeller of the type mentioned, which is protected against deformation.
  • the reinforcing disk has an annular disk part in the region of the deflecting blades and a bell-shaped stiffening area between the hub and the annular disk part, which extends at an acute angle to the hub, in that the deflecting blades are arranged on the concave side of the reinforcing disk , and that the plastic part projecting beyond the hub in the direction of the longitudinal axis ends at a predetermined distance from the inner surface of the hub in order to avoid frictional contact with the shaft.
  • the invention has the advantage that the water pump impeller is stiffened overall against twisting and is protected against deflection. In this way, the track of the water pump impeller, and in particular the deflection blades, is adhered to extremely precisely, so that an adjustment in the pump housing with a relatively small tolerance range is possible. The efficiency of the pump can thus be increased.
  • the stiffening of the water pump impeller is based, on the one hand, on the parabolic cross section of the inner circumferential area of the reinforcing disk and, on the other hand, on the fact that the reinforcing disk is guided into the outer circumferential area of the impeller and down to the deflection blades. Furthermore, since there is no friction between the plastic and the drive shaft according to the invention, heating and flowing of the plastic is prevented.
  • the inventive arrangement of the deflecting vanes on the concave side of the reinforcing disk can also achieve an extremely flat design of the water pump impeller.
  • a preferred development of the invention consists in that a hub ring is pressed onto the hub. This measure reinforces the hub and has the effect that any material fatigue or material weakening that may occur after a long period of operation is compensated for by the hub ring.
  • the hub ring is completely embedded in plastic. The hub ring is thus fixed in its position on the hub and loosening is prevented.
  • the water pump impeller is preferably stiffened in that a tapered plastic part that is rotationally symmetrical with respect to the hub axis is formed in front of a hub opening.
  • the hub is preferably widened in a trumpet shape at its free end.
  • a first embodiment of a water pump impeller shown in FIGS. 1 and 2 consists of a hub 1 with which the water pump impeller is plugged onto a drive shaft (not shown).
  • the hub 1 is then connected via a bell-shaped stiffening area 2 to a coaxial annular disk part 7 which is perpendicular to the hub axis and on which deflection blades 3 are formed.
  • the stiffening area 2 initially runs at an acute angle to the hub 1.
  • the stiffening area 2 and the disk part 7 together form a reinforcing disk 4, which is overmolded with plastic on both sides, while the plastic is applied to the hub only on one side on the outer surface 5, so that the water pump impeller with its metallic inner surface of the hub 1 can be plugged onto the drive shaft.
  • holes 6 are provided distributed over the surface of the reinforcement plate 4. These holes 6 can cover about 40 to 70% of the area.
  • the hub 1 of the reinforcing disk 4 extends over at least 40% of the hub length.
  • the disk part 7 is about 2 to 4 mm smaller than the diameter D corresponding to the outer circumference 8 of the water pump impeller.
  • the side of the impeller facing away from the deflection blades 3 is aligned with the free end face of the hub 1 in the example illustrated here.
  • the reinforcing disk 4 is practically guided to the next edge of the water pump impeller, i.e. it fully supports the deflecting blades 3, which are molded in plastic on the concave side of the reinforcing disk.
  • the hub 1 which in the example shown here is formed in one piece with the reinforcing disk 4.
  • the hub 1 and the reinforcing disk 4 can be formed in one piece from a deep-drawn sheet steel.
  • the hub 1 and the disk part 7 can consist of a thick material, for example a steel tube cylinder of 4 mm thickness, and the disk part 7 can be made of a thin material of, for example, 0.75 mm. It can also be provided that the material of the hub 1 and the disk part 7 have different strength properties.
  • the hub 1 and the disk part 7 can be connected to one another by welding, shrinking or pressing. There is also the possibility of designing the hub 1 in such a way that it extends over the entire length of the water pump impeller.
  • a metallic reinforcing sleeve 9 is additionally pressed over the cylindrical hub part and supports the hub against cold flow.
  • the reinforcement sleeve 9 is completely embedded in plastic.
  • the reinforcing sleeve 9 can also be referred to as a hub ring.
  • the plastic part of the water pump impeller is aligned with the hub on one end face of the hub 1 and that at the other end, at which the plastic is formed in the direction of the hub axis beyond the metallic hub 1 .
  • the plastic ends at a predetermined distance A from the inner surface of the hub in order to prevent the plastic from coming into frictional contact with the drive shaft.
  • an abrasion-resistant, durable plastic is provided, which has a wall thickness of at least 1 to 2 mm on both sides of the reinforcing disk 4.
  • radially extending stiffening rings 11 made of plastic.
  • FIG. 4 illustrates that the free end 12 of the hub 1 is expanded in a trumpet shape. This expansion acts as a funnel when the hub is placed on the drive shaft, so that the placement of the hub 1 on the drive shaft is facilitated and simplified. It can be clearly seen in the figure that the free end 12 of the hub 1 ends in a plastic part 13 set back by the distance A 'from the inner surface of the hub 1.
  • the plastic part 13 is cylindrical in the embodiment shown here.
  • a sealing ring 14 is arranged, which is shown purely schematically.
  • the hub 1 is further closed on one side by an outwardly streamlined plastic part 15 which on the one hand has the function of stiffening the disk part 7 and on the other hand to prevent swirling of the liquid in front of the center of the water wheel.
  • the plastic part 15 is rotationally symmetrical to the hub axis. It tapers starting from the base of the reinforcing disk 4 and is bell-shaped in the example shown here. This shape can be called funnel-like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP86108761A 1985-06-29 1986-06-27 Wasserpumpenlaufrad Expired EP0207457B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3523419 1985-06-29
DE3523419 1985-06-29

Publications (2)

Publication Number Publication Date
EP0207457A1 EP0207457A1 (de) 1987-01-07
EP0207457B1 true EP0207457B1 (de) 1988-10-26

Family

ID=6274622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108761A Expired EP0207457B1 (de) 1985-06-29 1986-06-27 Wasserpumpenlaufrad

Country Status (5)

Country Link
US (1) US4762465A (enrdf_load_stackoverflow)
EP (1) EP0207457B1 (enrdf_load_stackoverflow)
JP (2) JPH0648158Y2 (enrdf_load_stackoverflow)
DE (1) DE3661035D1 (enrdf_load_stackoverflow)
WO (1) WO1987000249A1 (enrdf_load_stackoverflow)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814186A1 (de) * 1988-04-27 1989-11-09 Winkelmann & Pannhoff Gmbh Verfahren zur herstellung von foerder- und/oder leiteinrichtungen fuer stroemungsmaschinen und nach diesem verfahren hergestelltes radial-laufrad, insbesondere kuehlmittelpumpenrad fuer brennkraftmaschinen
US4957414A (en) * 1988-12-29 1990-09-18 Flex-A-Lite Consolidated Fan and hub assembly
US5154574A (en) * 1990-08-06 1992-10-13 Ed Reinhorn Gearless air motor
US5399070A (en) * 1992-07-22 1995-03-21 Valeo Thermique Moteur Fan hub
DE4226498A1 (de) * 1992-08-11 1994-02-17 Klein Schanzlin & Becker Ag Rührwerkspropeller
US5588178A (en) * 1995-06-07 1996-12-31 Mcculloch Corporation Impeller for blower/vacuum
FR2757907B1 (fr) * 1996-12-26 1999-03-19 Valeo Climatisation Roue de turbine centrifuge, notamment pour un systeme de chauffage/ventilation et/ou de climatisation de vehicule automobile
DE19710608B4 (de) * 1997-03-14 2007-10-31 Behr Gmbh & Co. Kg Axiallüfter für den Kühler eines Verbrennungsmotors
US6405748B1 (en) * 1999-03-22 2002-06-18 David Muhs Trailer and fuel tank assembly
US6390768B1 (en) 1999-03-22 2002-05-21 David Muhs Pump impeller and related components
US6692234B2 (en) 1999-03-22 2004-02-17 Water Management Systems Pump system with vacuum source
US6315524B1 (en) 1999-03-22 2001-11-13 David Muhs Pump system with vacuum source
US6413039B1 (en) 2000-06-01 2002-07-02 Uis, Inc Impeller for coolant pumps
US6841112B1 (en) 2001-04-11 2005-01-11 Comair Rotron, Inc. Balanced rotor
RU2200878C2 (ru) * 2001-05-30 2003-03-20 Курский государственный технический университет Свеклонасос
UA62836A (en) * 2003-07-01 2003-12-15 Serhii Mykolaiovych Kuschanko One-disk working wheel of a blade hydraulic machine
US7178588B2 (en) * 2004-05-10 2007-02-20 Tom Harper Flexible cup for downhole devices
DE112005002258T5 (de) * 2004-09-20 2007-08-02 Metaldyne Co. LLC, Plymouth Laufrad mit abriebfähiger Spitze
JP2006263249A (ja) * 2005-03-25 2006-10-05 Matsushita Electric Works Ltd ヘアドライヤー
DE102005031589A1 (de) * 2005-07-06 2007-01-11 Schaeffler Kg Wasserpumpenflügelrad
DE502006006167D1 (de) * 2006-01-26 2010-04-01 Luk Lamellen & Kupplungsbau Kühlmediumverteileinrichtung
JP4242411B2 (ja) * 2006-11-02 2009-03-25 シグマ株式会社 インペラ
US20080175722A1 (en) * 2007-01-19 2008-07-24 David Muhs Vacuum pump with wear adjustment
US7878768B2 (en) * 2007-01-19 2011-02-01 David Muhs Vacuum pump with wear adjustment
US8444405B2 (en) * 2008-09-30 2013-05-21 Matthew Hollister Overmolded rotor
US8998586B2 (en) * 2009-08-24 2015-04-07 David Muhs Self priming pump assembly with a direct drive vacuum pump
RU2416741C1 (ru) * 2009-09-23 2011-04-20 Государственное образовательное учреждение высшего профессионального образования "Юго-Западный государственный университет" (ЮЗГУ) Свеклонасос
WO2011143064A2 (en) * 2010-05-10 2011-11-17 Borgwarner Inc. Fan with overmolded blades
DE102010029836A1 (de) * 2010-06-09 2011-12-15 Robert Bosch Gmbh Elektrische Maschine mit einem Lüfterrad
DE102013104922A1 (de) * 2013-05-14 2014-11-20 Ihi Charging Systems International Gmbh Laufrad für eine Fluidenergiemaschine
CN105960751A (zh) * 2014-02-05 2016-09-21 万高电机设备公司 电旋转机器的内部通风系统
KR102233312B1 (ko) 2014-06-05 2021-03-29 삼성전자주식회사 모터어셈블리
CN104514747A (zh) * 2014-12-23 2015-04-15 江门麦加道机电厂有限公司 一种污水泵叶轮
DE102020133825A1 (de) * 2020-12-16 2022-06-23 Ebm-Papst Mulfingen Gmbh & Co. Kg Lüfterrad mit Verstärkungsring

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Publication number Priority date Publication date Assignee Title
US1525724A (en) * 1921-02-05 1925-02-10 Submarine Signal Co Motor for ships' logs
US2120277A (en) * 1935-04-26 1938-06-14 Canadian Allis Chalmers Ltd Rubber covered impeller
GB497287A (en) * 1936-06-26 1938-12-16 Allen Sherman Hoff Co Improvements in centrifugal pumps
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US2498348A (en) * 1947-05-29 1950-02-21 Jr Frank E Thompson Marine propeller
DE1115585B (de) * 1958-10-04 1961-10-19 Siemens Ag Schaufelrad fuer selbstansaugende Kreisel-pumpen, insbesondere Seitenkanalpumpen
CH359036A (fr) * 1958-10-29 1961-12-15 Gueytron Jean Claude Roland Rotor pour pompe rotative
US3155045A (en) * 1961-11-13 1964-11-03 George W Lown Wear resistant pumps
US3189671A (en) * 1962-02-12 1965-06-15 Allis Chalmers Mfg Co Method of making a rubber lined impeller
DE1528765A1 (de) * 1964-04-22 1970-01-22 Schloz Motor Condensator Zusammengesetztes Fluegelrad fuer Heisswasser-Kreiselpumpen,beispielsweise fuer Kuehlwasserpumpen in Kraftfahrzeugen
US3408944A (en) * 1966-12-02 1968-11-05 Sta Rite Industries Impeller construction for a centrifugal pump
US3551067A (en) * 1969-01-22 1970-12-29 Duriron Co Lined corrosion resistant pump
BE759894A (fr) * 1969-12-06 1971-05-17 Schloz Motor Condensator Poulie assemblee pour dynamos de vehicules automobiles avec gorge a courroie en tole et moyeu et couronne de
FR2181111A5 (enrdf_load_stackoverflow) * 1972-04-17 1973-11-30 Mecanique Ind Int
DE2535878C2 (de) * 1975-08-12 1985-01-24 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal Laufrad der offenen Bauart aus Kunststoff für einen Kreisellüfter
DE3307386A1 (de) * 1983-03-02 1984-09-06 Wilden Kg, 8473 Pfreimd Laufrad fuer pumpen, verdichter, geblaese und dgl.

Also Published As

Publication number Publication date
US4762465A (en) 1988-08-09
JPS63500007U (enrdf_load_stackoverflow) 1988-11-02
JPS6249696U (enrdf_load_stackoverflow) 1987-03-27
DE3661035D1 (en) 1988-12-01
EP0207457A1 (de) 1987-01-07
JPH0648158Y2 (ja) 1994-12-07
WO1987000249A1 (en) 1987-01-15

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