EP0465757A2 - Pompe de circulation d'eau de refroidissement - Google Patents

Pompe de circulation d'eau de refroidissement Download PDF

Info

Publication number
EP0465757A2
EP0465757A2 EP91101184A EP91101184A EP0465757A2 EP 0465757 A2 EP0465757 A2 EP 0465757A2 EP 91101184 A EP91101184 A EP 91101184A EP 91101184 A EP91101184 A EP 91101184A EP 0465757 A2 EP0465757 A2 EP 0465757A2
Authority
EP
European Patent Office
Prior art keywords
cooling water
water pump
bearing
pump according
ring
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
EP91101184A
Other languages
German (de)
English (en)
Other versions
EP0465757B1 (fr
EP0465757A3 (en
Inventor
Bernhard Dr. Gesenhues
Detlef Dr. Cordts
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
Priority to AT91101184T priority Critical patent/ATE98748T1/de
Publication of EP0465757A2 publication Critical patent/EP0465757A2/fr
Publication of EP0465757A3 publication Critical patent/EP0465757A3/de
Application granted granted Critical
Publication of EP0465757B1 publication Critical patent/EP0465757B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps

Definitions

  • the invention relates to a cooling water pump for an internal combustion engine, comprising a bearing cover which can be fixed to a pump housing and in which a pump shaft provided with an impeller is rotatably mounted by means of a bearing, the bearing cover and the pump shaft being sealed off from one another by a sealing element which is located in the space between the impeller and the bearing is arranged and wherein an annular space provided with a ventilation device is provided in the axial intermediate space of the bearing and the sealing element.
  • Such a cooling water pump is known from DE-PS 38 21 352.
  • the annular space provided with the ventilation device is provided in order to discharge leakage liquid and to keep it away from the bearing.
  • the invention has for its object to develop such a cooling water pump such that there is a reduction in the axial length of the annular space.
  • the ventilation device comprises at least two openings penetrating the bearing cover on opposite sides of the shaft, wherein at least one absorbent ring sealingly enclosing the shaft is provided in the intermediate space axially between the ventilation openings and the bearing. Cooling liquid passing through the sealing gap and crawling along the shaft is temporarily accommodated in the ring, with continuous evaporation taking place over the surface thereof facing the sealing element and evacuation of the steam via the ventilation openings which are provided on opposite sides of the shaft.
  • the sealing element touches the shaft, but it is entirely possible to provide a gap of capillary-active narrowness between the two parts. This can prevent loss of friction and operational wear.
  • the evaporation of the coolant is, on the one hand, the relatively high temperature of the pump shaft and the sealing element that results during the intended use and, on the other hand, the pumping effect that results from the rotary movement of the pump shaft.
  • the ring can be sealingly assigned to the bearing cap, which includes a direct contact or an approach up to a small distance.
  • the annular space is completely covered in the radial direction in such an embodiment, which necessitates a substantial improvement in the protective effect which results in relation to the bearing.
  • the ring can be non-rotatably connected to the shaft or the bearing cover.
  • An embodiment in which the ring is non-rotatably connected to the bearing cover is preferred in the context of the present invention.
  • the ring is covered with a liquid-impermeable layer on the side facing the bearing.
  • a liquid-impermeable layer on the side facing the bearing.
  • This can consist, for example, of a coating of polymeric material molded on in the liquid state.
  • an annular disk made of liquid-impermeable material for example made of metal or plastic, independently of the ring, can also be included in the considerations and, with appropriate calibration of the inner or outer circumference, facilitates the non-rotatable fixing of the ring on the bearing cover.
  • the ring is generally rectangular in profile. Versions with an angular profile can be more easily assigned to the pump shaft and the housing with the required accuracy. They have a relatively enlarged surface, which favors the evaporation of the coolant absorbed.
  • the air throughput through the annular space is favored by convection processes under normal operating conditions if the openings comprise at least one opening arranged above and at least one below an axis, about which the pump shaft can be rotated. At least one of these openings should expediently be provided in the region of the highest and at least one of these openings in the region of the lowest point of the annular space. In addition, there is the advantage in this case that the accumulation of cooling liquid in the annular space is prevented.
  • the ring can consist of an open-cell foam, for example a polyurethane foam.
  • the mechanical and chemical resistance is much greater if the ring consists of an intrinsically strong fiber material, for example a matted material, a nonwoven fabric, a woven and / or a knitted fabric.
  • the fibers used can be of any type and include those of natural, mineral or synthetic origin.
  • a cooling water pump for an internal combustion engine is shown in a longitudinal section, comprising a bearing cover 2 which can be fixed to a pump housing 1 and in which a pump shaft 4 provided with an impeller 3 is rotatably mounted by means of a bearing 5, the bearing cover 2 and the pump shaft 4 are sealed against each other by a sealing element 6, which is arranged in the intermediate space between the impeller 3 and the bearing 5 and wherein an annular space 7 provided with a ventilation device is provided in the axial intermediate space of the bearing 5 and the sealing element 6.
  • the sealing element consists of a mechanical seal. It can optionally be replaced by a lip seal or another design of a sealing element.
  • the ventilation device of the annular space 7 is formed by two vertically superimposed ventilation openings 8, 9 which penetrate the wall of the bearing cover 2 at an incline. Both openings 8, 9 open in a matching radial plane into the annular space 7.
  • Two axially stacked rings 10 adjoin each other at their opposite mouths, which are circular in shape and consist of a needle felt made of polyester fibers.
  • the rings 10 are adhesively fixed in a liquid-impermeable angle ring made of plastic, which completely covers them on the radially outward-facing side and on the side facing the bearing 5.
  • the outside diameter of the angle ring is dimensioned such that after being pressed into the receiving bore of the bearing cover 2 there is a non-rotatable fixing on the wall thereof.
  • the inner diameter of the annular discs 10 is dimensioned such that there is a relatively movable surface contact or a capillary-active gap with respect to the shaft 4. Cooling liquid passing through the sealing gap of the sealing element 6 is thereby fed continuously during the intended use of the pore structure of the disks 10 and temporarily stored therein. Due to the high temperature of the shaft and the end face of the sealing element 6 facing the disks 10, coolant stored in the disks is continuously evaporated. The cooling liquid evaporating over the end face of the disks is absorbed by the air which passes through the annular space via the ventilation openings and is discharged from the annular space 7 via the opening 9. Exposure to coolant components of the bearing 5 is thereby largely excluded, without any traces of the leak being recognizable in the area of the opening 8 on the outer surface of the bearing cover. Nevertheless, there is a significant reduction in the axial length required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)
  • Sampling And Sample Adjustment (AREA)
EP91101184A 1990-07-07 1991-01-30 Pompe de circulation d'eau de refroidissement Expired - Lifetime EP0465757B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91101184T ATE98748T1 (de) 1990-07-07 1991-01-30 Kuehlwasserpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4021716 1990-07-07
DE4021716 1990-07-07

Publications (3)

Publication Number Publication Date
EP0465757A2 true EP0465757A2 (fr) 1992-01-15
EP0465757A3 EP0465757A3 (en) 1992-02-19
EP0465757B1 EP0465757B1 (fr) 1993-12-15

Family

ID=6409882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101184A Expired - Lifetime EP0465757B1 (fr) 1990-07-07 1991-01-30 Pompe de circulation d'eau de refroidissement

Country Status (6)

Country Link
US (1) US5131809A (fr)
EP (1) EP0465757B1 (fr)
JP (1) JPH086709B2 (fr)
AT (1) ATE98748T1 (fr)
DE (1) DE59100720D1 (fr)
ES (1) ES2047347T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535724A1 (fr) * 1991-09-30 1993-04-07 General Motors Corporation Collecteur de fuites à capacité accrue pour pompe de liquide à refroidissement
RU2160387C2 (ru) * 1997-12-24 2000-12-10 Акционерное общество открытого типа - Холдинговая компания "Барнаултрансмаш" Центробежный водяной насос системы охлаждения двигателя внутреннего сгорания
RU2168067C1 (ru) * 2000-01-06 2001-05-27 Закрытое акционерное общество "Тольяттинский завод автоагрегатов" Насос для регулирования теплообмена в двс

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5660521A (en) * 1996-03-19 1997-08-26 Navistar International Transportation Corp. Water pump seal coolant wick
GB2334559B (en) * 1998-02-20 2002-05-15 Rover Group A water pump seal arrangement
US6354249B1 (en) 2000-06-13 2002-03-12 Kohler Co. Engine with coolant pump
US6752590B2 (en) 2002-09-26 2004-06-22 International Engine Intellectual Property Company, Llc Water pump and impeller therefor
US8550039B2 (en) * 2010-10-28 2013-10-08 GM Global Technology Operations LLC Pump assembly and method of manufacturing same
DE102018123908A1 (de) * 2018-09-27 2020-04-02 Nidec Gpm Gmbh Wälzlager mit Dichtungsanordnung und Wasserpumpe mit demselben
DE102018133464A1 (de) * 2018-12-21 2020-06-25 Nidec Gpm Gmbh Fahrzeugpumpenvorrichtung zum Pumpen einer Flüssigkeit und Verfahren zum Umgang mit einer Leckage-Flüssigkeit in der Fahrzeugpumpenvorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821352C1 (fr) 1988-06-24 1989-11-02 Goetze Ag, 5093 Burscheid, De

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1520939A (en) * 1921-01-10 1924-12-30 Worthington Pump & Mach Corp Pump sealing and testing device
US2150078A (en) * 1938-06-28 1939-03-07 Pollock Jim Driving and sealing means for rotary fluid impellers
FR898840A (fr) * 1943-09-06 1945-05-08 Dispositif d'entraînement de pompe rotative à liquide
GB1359380A (en) * 1972-01-24 1974-07-10 Skf Uk Ltd Water circulating pumps for internal combustion engines
JPS62150596A (ja) * 1985-12-25 1987-07-04 Nec Corp 半導体記憶装置
JPS62150596U (fr) * 1986-03-17 1987-09-24
JPS63191236U (fr) * 1987-05-29 1988-12-09
US4768923A (en) * 1987-06-09 1988-09-06 General Motors Corporation Combined water pump, bearing and seal assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821352C1 (fr) 1988-06-24 1989-11-02 Goetze Ag, 5093 Burscheid, De

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535724A1 (fr) * 1991-09-30 1993-04-07 General Motors Corporation Collecteur de fuites à capacité accrue pour pompe de liquide à refroidissement
RU2160387C2 (ru) * 1997-12-24 2000-12-10 Акционерное общество открытого типа - Холдинговая компания "Барнаултрансмаш" Центробежный водяной насос системы охлаждения двигателя внутреннего сгорания
RU2168067C1 (ru) * 2000-01-06 2001-05-27 Закрытое акционерное общество "Тольяттинский завод автоагрегатов" Насос для регулирования теплообмена в двс

Also Published As

Publication number Publication date
ES2047347T3 (es) 1994-02-16
ATE98748T1 (de) 1994-01-15
DE59100720D1 (de) 1994-01-27
JPH04262095A (ja) 1992-09-17
US5131809A (en) 1992-07-21
EP0465757B1 (fr) 1993-12-15
EP0465757A3 (en) 1992-02-19
JPH086709B2 (ja) 1996-01-29

Similar Documents

Publication Publication Date Title
DE69420194T2 (de) Wellendichtung mit kontrollierter Porösität
EP0033963B1 (fr) Joint d'étanchéité de type radial
EP0012133B1 (fr) Joint pour rendre étanche à un mélange de fluide et de gaz l'ouverture entre un arbre tournant et un alésage de carter
EP0357875B1 (fr) Garniture étanche de l'arbre
EP0465757B1 (fr) Pompe de circulation d'eau de refroidissement
DE60118495T2 (de) Doppeldichtung
EP0267353B1 (fr) Joint à cassette
EP0744567B1 (fr) Joint à lèvre radiale
DE69812736T2 (de) Schraubenkompressor mit Öleinspritzung und Filter
DE102012209687A1 (de) Wasserpumpe
DE2920193C2 (de) Kühlluftzuführung nach den Turbinenrotorschaufeln eines Gasturbinentriebwerks
EP0038910B1 (fr) Elément d'étanchéité
DE4121733C2 (fr)
DE3501066C2 (fr)
DE4112484A1 (de) Hydraulische sicherheitskupplung
DE2748595A1 (de) Lagerdichtung
DE19754400A1 (de) Kassettendichtung
DE102008035315A1 (de) Dichteinrichtung
DE3240710A1 (de) Entlueftungsschalldaempfer
DE10107723A1 (de) Wellendichtring
DE3544783A1 (de) Wellendichtung
DE3811227C2 (de) Ferrofluiddichtung
DE2506484A1 (de) Anordnung zum schmieren eines lagers
EP1225378B1 (fr) Dispositif d'étanchéité
DE3149105C2 (de) Flüssigkeitsreibungskupplung mit einer Temperatursteuereinrichtung

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

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

AK Designated contracting states

Kind code of ref document: A3

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

17P Request for examination filed

Effective date: 19920207

17Q First examination report despatched

Effective date: 19930125

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 98748

Country of ref document: AT

Date of ref document: 19940115

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59100720

Country of ref document: DE

Date of ref document: 19940127

ITTA It: last paid annual fee
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940104

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2047347

Country of ref document: ES

Kind code of ref document: T3

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: FIRMA CARL FREUDENBERG

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: 91101184.9

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

Ref country code: SE

Payment date: 19961216

Year of fee payment: 7

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

Ref country code: GB

Payment date: 19970107

Year of fee payment: 7

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

Ref country code: FR

Payment date: 19970108

Year of fee payment: 7

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

Ref country code: AT

Payment date: 19970109

Year of fee payment: 7

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

Ref country code: DE

Payment date: 19970110

Year of fee payment: 7

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

Ref country code: ES

Payment date: 19970130

Year of fee payment: 7

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

Ref country code: NL

Payment date: 19970131

Year of fee payment: 7

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

Ref country code: BE

Payment date: 19970211

Year of fee payment: 7

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: 19980130

Ref country code: AT

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

Effective date: 19980130

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: 19980131

Ref country code: FR

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

Effective date: 19980131

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19980131

Ref country code: BE

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

Effective date: 19980131

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19980206

BERE Be: lapsed

Owner name: FIRMA CARL FREUDENBERG

Effective date: 19980131

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: 19980801

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

Effective date: 19980130

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

Effective date: 19980801

EUG Se: european patent has lapsed

Ref document number: 91101184.9

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000201

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;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: 20050130