EP0349702A2 - Pompe à eau de refroidissement entraînée par une courroie - Google Patents

Pompe à eau de refroidissement entraînée par une courroie Download PDF

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Publication number
EP0349702A2
EP0349702A2 EP89102743A EP89102743A EP0349702A2 EP 0349702 A2 EP0349702 A2 EP 0349702A2 EP 89102743 A EP89102743 A EP 89102743A EP 89102743 A EP89102743 A EP 89102743A EP 0349702 A2 EP0349702 A2 EP 0349702A2
Authority
EP
European Patent Office
Prior art keywords
cooling water
water pump
pump shaft
pulley
pump according
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.)
Withdrawn
Application number
EP89102743A
Other languages
German (de)
English (en)
Other versions
EP0349702A3 (fr
Inventor
Herbert Dr. Börger
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP0349702A2 publication Critical patent/EP0349702A2/fr
Publication of EP0349702A3 publication Critical patent/EP0349702A3/fr
Withdrawn legal-status Critical Current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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/049—Roller bearings
    • 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
    • F04D29/046—Bearings
    • F04D29/0465—Ceramic bearing designs
    • 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings 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
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • Y10T403/606—Leaf spring

Definitions

  • the invention relates to a cooling water pump according to the preamble of claim 1.
  • Such a cooling water pump is known. It consists of a large number of detachably interconnected, metallic individual parts, which requires a considerable amount of production and gives the cooling water pump great weight. The durability of this known cooling water pump is also unsatisfactory.
  • the invention has for its object to show a cooling water pump, which differs from the known design with reduced weight and reduced manufacturing costs by a significantly improved service life.
  • the pump shaft and the pulley are formed in one piece. In addition to cost-reduced producibility, unbalance phenomena are thereby reliably avoided, which already noticeably increases the service life of the cooling water pump according to the invention.
  • the pump shaft and the pulley consist of polymer material and are produced in one piece.
  • the mechanical resistance is nevertheless sufficient for all loads occurring during practical use. If necessary, it can be increased further by using a polymeric material which is reinforced by fibers evenly distributed therein.
  • the pump shaft can be rotatably mounted in the housing cover by means of a roller bearing and at the same time can be secured against axial relative displacements.
  • the pump shaft is fixed on the inner ring and the housing cover on the outer ring of the rolling bearing.
  • the pump shaft can be provided with a blind bore penetrating the pulley coaxially, the blind bore extending into the region of the end of the inner ring axially opposite the pulley.
  • a particularly good longevity of the cooling water pump according to the invention can be achieved if the assignment of the inner and outer ring of the rolling bearing to the housing cover and to the pump shaft takes place in the reverse manner.
  • the resulting heat dissipation via the pulley and the V-belt rotating with the same is considerable.
  • the housing cover can consist of polymeric material, which opens up the possibility of connecting the polymeric material used for its manufacture to the outer and inner ring of the rolling bearing by direct molding. A subsequent assembly of the rolling bearing can be omitted and there is the further advantage of a particularly precise assignment of the same to the molded parts.
  • the connection in this regard is also characterized by good durability.
  • the pump shaft can be sealed off from the housing cover by a lip seal, it having proven to be advantageous if the lip seal has a circumferential holding section pointing outward in the radial direction and if the holding section is connected to the same by direct molding of the housing cover made of polymeric material is.
  • a version can be used as the lip seal, which consists of a ring-shaped disk made of PTFE due to the manufacturing process, which is bulged radially in the direction of the pump impeller in the direction of the pump impeller and rests under elastic prestress on the outer circumference of the pump shaft to be sealed.
  • the pump shaft can be provided in the area of the contact zone of the lip seal with a reinforcement surrounding its outer circumference. This causes a reduction in local wear and, in addition to the plasma polymerization of the surface of the shaft, a direct ceramic coating has proven to be excellent. It is also possible to attach a protective sleeve made of metal. This can also be connected to the pump shaft during its formation and solidification. This results in advantages with regard to a further reduction in manufacturing costs.
  • the pump shaft can be provided at least at one point with at least one recess extending in the radial direction and the pump impeller with at least one holding claw which is adapted to the recess and can be snapped into the recess.
  • the pump shaft bearing is arranged in an axial projection of the pump cover, the pulley enclosing the axial projection and thus the pump shaft bearing on the outside with the raceway of the belt pulley.
  • the axial centers of the raceway of the belt pulley and the pump shaft bearing should expediently be arranged in the same radial plane of the pump shaft in order to avoid the occurrence of tilting moments in the pump shaft bearing.
  • the mechanical load on the pump shaft bearing and the housing cover is given a certain static relief.
  • the cooling water pump according to the invention is easy to manufacture and has a significantly reduced weight and has a service life which roughly corresponds to that of conventional internal combustion engines. An early exchange is therefore unnecessary in most cases.
  • the cooling water pump shown in FIG. 1 is made in one piece with the pump shaft 1, which is injection-molded from the polymer pulley 6 and is axially immovable on a roller bearing 3, but is rotatably mounted in the housing cover 2. Within the axial region of the roller bearing 3, the pump shaft 1 is provided with a blind bore 7 penetrating from the side of the pulley 6 and extending into the axially opposite region of the roller bearing 3.
  • the outer ring 3.1 of the rolling bearing 3 is provided in the central region of its axial extent with a circumferential recess into which the polymeric material forming the housing cover 2 can penetrate during its shaping and solidification. Subsequently, a relative displacement of both parts in the axial direction is not possible, which ensures that ultimately the pump shaft 1 and thus the pump impeller 5 is always assigned to the housing cover 2 in a constant and precisely defined manner both in the radial and in the axial direction.
  • the roller bearing 3 is arranged in the embodiment shown in an axial projection 13 of the housing cover 2 and this is in turn enclosed by the raceway 14 of the pulley 6.
  • the axial center of the rolling bearing 3 and the axial center of the raceway 14 of the pulley are arranged in the same radial plane of the pump shaft 1. In this way, possible tilting moments in the area of the roller bearings are avoided and a great mechanical resistance of the cooling water pump is achieved with the most economical use of materials. At the same time, the axial length is reduced to a minimum.
  • the seal 4 between the housing cover 2 and the pump shaft 1 consists of a stuffing box packing. If necessary, it can be replaced by a mechanical seal or by another seal of a conventional type.
  • Fig. 2 is formed in one piece with the pulley pump shaft acc.
  • Fig. 1 clearly drawn out, the impeller 5 being fastened to the pump shaft by means of a snap-in connection. This precludes an axial displacement or relative rotation of the impeller 5 on the pump shaft 1.
  • the axial stop surface 8 can be seen radially inside the pulley 6, which axially contacts the inner ring of the roller bearing 3 in the usable cooling water pump. This precisely defines the axial assignment between the two parts.
  • the cooling water pump shown in Fig. 3 is structurally similar to the above.
  • the impeller 5 is, however, mounted the other way round with regard to special circumstances of the application, which makes it necessary to move a larger part of the pump housing into the pump cover 2. This contains a relatively enlarged annulus.
  • the pump cover 2 is sealed off from the pump shaft 1 by a lip seal 9.
  • the lip seal 9 consists of a ring-shaped disc made of PTFE due to the manufacturing process, which is bulged like a trumpet in the direction of the sealed space in the area of its inner circumference and rests on the outer circumference of the pump shaft 1 under a radial bias.
  • the protective sleeve 11 made of metallic material.
  • the protective sleeve 11 is fixed by being pressed onto the pump shaft 1 under an elastic pretension and is non-rotatably connected to the same.
  • the lip ring 9 In the area of its outer circumference, the lip ring 9 has a holding section 10 that is also flat during the intended use. This is clamped in the axial direction between an inwardly facing annular projection 16 of the pump cover 2 and the clamping ring 15 which is screwed into an internal thread of the pump cover 2. The lip ring 9 is thereby fixed liquid-tight and non-rotatably in the housing cover 2 during its intended use. Further details are illustrated in FIG. 4.
  • the housing cover 2 is made of polymer material and is molded directly onto the holding section of the lip seal 9.
  • the holding section of the lip ring made of PTFE was previously etched, preferably using a solution of sodium in liquid ammonia.
  • the compound obtained can then be called insoluble. In addition to being easy to manufacture, it is particularly durable.
  • the rolling bearing 3 is also arranged in an axial projection 13 of the housing cover 2 in this embodiment. It has an outer ring projection 1 which touches the lip seal on the back. The axial projection 13 is thereby braced, as a result of which it is better able to withstand high belt forces.
  • the pump impeller is provided with a holding claw 18 in the area of its bore. In the form shown, which can be used, it is snapped into a correspondingly designed circumferential recess of the pump shaft 1. Both parts then form a non-rotatable unit in which the axial mutual assignment is defined in a precise manner. Mutual gluing between the two parts is also possible or in addition.
  • FIG. 6 shows a section of a cooling water pump similar to the embodiment shown in FIG. 5, the housing cover consisting of polymeric material being molded directly onto the holding section 10 of the lip seal and the outer ring 3.1 of the roller bearing.
  • the inner ring 3.2 of the roller bearing is axially extended into the area of the lip seal and at the same time forms a protective sleeve for the pump shaft, which is not to be inserted subsequently in FIG. 6.
  • this can be made of plastic, so that only three individual parts need to be assembled during the final assembly.
  • Such a design of a cooling water pump can be produced particularly economically and ensures an extremely long service life with low weight. It is resistant to aggressive liquids and is therefore particularly suitable for critical applications.
  • the pump shaft 1 is supported by the pulley 6 on the outer ring 3.1 of the rolling bearing.
  • the inner ring of the roller bearing lies on the outer circumference of the axial projection 13 of the housing cover, which is penetrated by the pump shaft 1 in the axial direction.
  • Fig. 8 the rolling bearing of the cooling water pump according to Fig. 7 is shown in a partial enlargement. It can be seen that the outer ring is connected by direct molding to the pulley, which is made of a polymer material, and thus to the pump shaft 1. The mutual assignment between the individual parts can therefore not change during the intended use.
  • the inner ring of the rolling bearing is pressed onto the axial projection 13 of the housing cover, which is made of a polymeric material, under a prestress and is therefore immovably assigned to it. Even during long-term use, the mutual assignment undergoes no change insofar as the metallic material of the inner ring of the rolling bearing under the permanent action of the resulting bracing does not allow any disruptive deformation any more than the polymeric material forming the axial projection 13.
  • the utility value of such a cooling water pump is therefore particularly high.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP89102743A 1988-07-05 1989-02-17 Pompe à eau de refroidissement entraínée par une courroie Withdrawn EP0349702A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3822702 1988-07-05
DE3822702A DE3822702A1 (de) 1988-07-05 1988-07-05 Kuehlwasserpumpe mit riemenantrieb

Publications (2)

Publication Number Publication Date
EP0349702A2 true EP0349702A2 (fr) 1990-01-10
EP0349702A3 EP0349702A3 (fr) 1990-08-16

Family

ID=6357988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89102743A Withdrawn EP0349702A3 (fr) 1988-07-05 1989-02-17 Pompe à eau de refroidissement entraínée par une courroie

Country Status (6)

Country Link
US (1) US5026253A (fr)
EP (1) EP0349702A3 (fr)
JP (1) JPH081188B2 (fr)
BR (1) BR8903291A (fr)
DE (1) DE3822702A1 (fr)
MX (1) MX173619B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021446A1 (de) * 2006-05-09 2007-11-15 Schaeffler Kg Welle einer Wasserpumpe eines Verbrennungsmotors
CN103629143A (zh) * 2013-11-29 2014-03-12 浙江吉利控股集团有限公司 一种水泵结构

Families Citing this family (22)

* Cited by examiner, † Cited by third party
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DE4040200C2 (de) * 1990-12-15 1994-11-17 Freudenberg Carl Fa Kühlmittelpumpe zur Montage an dem Pumpengehäuse einer Brennkraftmaschine
US5174016A (en) * 1991-04-25 1992-12-29 Toddco General, Inc. Chip removal apparatus and method of using same
US5412927A (en) * 1993-11-03 1995-05-09 Kawashimaseisakusyo Co., Ltd. Longitudinal bag-making, filling and packaging machine
KR0164062B1 (ko) * 1995-05-20 1999-04-15 정몽원 알터네이터용 회전자 축
JP2843280B2 (ja) * 1995-09-29 1999-01-06 アイシン精機株式会社 ウォータポンプ
IT1287926B1 (it) * 1996-06-12 1998-08-26 Rotafil Sas Di Vincenzo Massar Dispositivo di tenuta per macchine aspira polveri e liquidi
DE19653398A1 (de) * 1996-12-20 1998-06-25 Kloeckner Humboldt Deutz Ag Keilriemenscheibe einer Brennkraftmaschine
DE59902165D1 (de) * 1998-03-26 2002-09-05 Tcg Unitech Ag Kühlmittelpumpe
DE60128631T2 (de) * 2000-09-19 2008-02-07 Aisin Seiki K.K., Kariya Wasserpumpe
DE20021808U1 (de) * 2000-12-22 2001-04-19 VR Dichtungen GmbH, 52531 Übach-Palenberg Radialwellendichtung mit zwei Dichtlippen
JP2002349481A (ja) * 2001-05-22 2002-12-04 Aisin Seiki Co Ltd ウォーターポンプ
BR0210823B1 (pt) * 2001-07-06 2011-05-31 polia e conjunto de polia.
US6960066B2 (en) * 2002-02-21 2005-11-01 Aisin Seiki Kabushiki Kaisha Water pump with a hollow shaft, seal, and drain opening therein
US7048495B2 (en) * 2003-11-19 2006-05-23 Itt Manufacturing Enterprises, Inc. Rotating machine having a shaft including an integral bearing surface
US7497947B2 (en) 2004-04-14 2009-03-03 Embro Corporation Devices for water treatment
CN100449153C (zh) * 2004-09-27 2009-01-07 株式会社Tbk 流体泵
US8915720B2 (en) * 2007-12-31 2014-12-23 Cummins Inc. Fan hub integrated vacuum pump system
NZ582354A (en) * 2009-12-24 2010-05-28 Swashpump Technologies Ltd Non-rotating nutating plate pump with compound spherical bearing
FR3006711B1 (fr) * 2013-06-07 2015-06-05 Skf Ab Systeme d'entrainement de pompe a eau et procede de montage
CN106662115B (zh) * 2014-08-05 2018-04-27 日立汽车系统株式会社 水泵及该水泵的制造方法
US9927017B2 (en) * 2015-04-17 2018-03-27 Aktiebolaget Skf Sheave for guiding rope in an industrial machine
DE202015106914U1 (de) 2015-12-17 2016-01-20 Danfoss Power Electronics A/S Dichtungsvorrichtung für eine antreibbare Achse und Dichtungsträger für eine Dichtungsvorrichtung

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021446A1 (de) * 2006-05-09 2007-11-15 Schaeffler Kg Welle einer Wasserpumpe eines Verbrennungsmotors
WO2007128716A1 (fr) * 2006-05-09 2007-11-15 Schaeffler Kg Arbre d'une pompe à eau d'un moteur à combustion interne
CN103629143A (zh) * 2013-11-29 2014-03-12 浙江吉利控股集团有限公司 一种水泵结构

Also Published As

Publication number Publication date
BR8903291A (pt) 1990-09-25
MX173619B (es) 1994-03-18
US5026253A (en) 1991-06-25
JPH0264293A (ja) 1990-03-05
DE3822702C2 (fr) 1992-07-30
DE3822702A1 (de) 1990-03-15
JPH081188B2 (ja) 1996-01-10
EP0349702A3 (fr) 1990-08-16

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