DE102006054743A1 - Coolant pump i.e. water pump, for cooling circuit of internal combustion engine, has seals, where one of seal seals annular gap at side turned from pump wheel and includes occasional passage from gap to pump environment - Google Patents
Coolant pump i.e. water pump, for cooling circuit of internal combustion engine, has seals, where one of seal seals annular gap at side turned from pump wheel and includes occasional passage from gap to pump environment Download PDFInfo
- Publication number
- DE102006054743A1 DE102006054743A1 DE102006054743A DE102006054743A DE102006054743A1 DE 102006054743 A1 DE102006054743 A1 DE 102006054743A1 DE 102006054743 A DE102006054743 A DE 102006054743A DE 102006054743 A DE102006054743 A DE 102006054743A DE 102006054743 A1 DE102006054743 A1 DE 102006054743A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- annular gap
- seals
- coolant pump
- passage
- 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- Withdrawn
Links
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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/49—Bearings with both balls and rollers
- F16C19/492—Bearings with both balls and rollers with two or more rows with angular contact
- F16C19/495—Bearings with both balls and rollers with two or more rows with angular contact with two rows
- F16C19/497—Bearings with both balls and rollers with two or more rows with angular contact with two rows in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
- F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/42—Pumps with cylinders or pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
Abstract
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine Kühlmittelpumpe mit einer Rotorwelle, mit wenigstens einem Pumpenrad auf der Rotorwelle und mit wenigstens einer Wälzlagerung, wobei die Rotorwelle mittels der Wälzlagerung in einem Gehäuse drehbar gelagert und ein teilweise mit Wälzlagern befüllter radialer Ringspalt der Wälzlagerung axial beidseitig mit elastisch dichtend vorgespannten Dichtungen abgedichtet ist.The The invention relates to a coolant pump with a rotor shaft, with at least one impeller on the rotor shaft and at least a rolling bearing, wherein the rotor shaft by means of rolling bearing rotatably mounted in a housing and a partially with Rolling bearings filled radial annular gap of the rolling bearing axially on both sides with elastically sealing preloaded seals is sealed.
Hintergrund der ErfindungBackground of the invention
Eine
derartige Kühlmittelpumpe ist in
Die
aufwändig gestaltete Dichtung ist zumeist eine Gleitringdichtung,
durch die trotz aller Bemühungen eine gewisse Leckmenge
an Kühlmittel in das Gehäuse entweicht. Diese
Leckmenge tritt an der Seite der Gleitringdichtung aus, die einer
der Dichtungen der Wälzlagerung gegenüber liegt.
In Wasserpumpen nach
Die Wälzlagerdichtungen sind in der Regel elastische Dichtungen, die mit ein oder zwei Dichtlippen vorgespannt und in gewissen Maße druckdicht anliegen. Deshalb sind Wälzlagerdichtungen bei Betrieb und bei Stillstand der Kühlmittelpumpe durch Druckgefälle zwischen dem Lagerinneneren (Ringspalt) und der Umgebung des Wälzlagers belastet. Das Lagerinnere ist je nach Ausführung der Dichtung und von den Betriebsbedingungen abhängig mit Unter- oder Überdrücken im Vergleich zum Druck der Außenumgebung belastet. Bei Betrieb der Kühlmittelpumpe entsteht durch Erwärmen zunächst Überdruck der Luft in dem Ringspalt, der durch Abkühlung bei Stillstand des Fahrzeugs bis auf Unterdruck sinkt. Das bei Betrieb der Kühlmittelpumpe recht wirksame Schleuderblech kann bei Stillstand dieser nicht verhindern, dass durch den entstehenden Unterdruck Feuchtigkeit bzw. Kühlmittelleckage in den Ringspalt gezogen wird und sich dort absetzt. Die eindrungene Flüssigkeit beeinflußt die Schmiereigenschaften des im Ringspalt enthaltenen Schmierfettes nachteilig, führt zur Korrosion und verringert somit die Lebensdauer der Wälzlagerung.The Rolling bearing seals are usually elastic seals, which are preloaded with one or two sealing lips and to some extent pressure tight. Therefore, rolling bearing seals are included Operation and at standstill of the coolant pump by pressure gradient between the inside of the bearing (annular gap) and the surroundings of the rolling bearing loaded. The bearing interior is depending on the design of the seal and depending on the operating conditions with under- or overpressures burdened compared to the pressure of the outside environment. at Operation of the coolant pump is caused by heating initially overpressure of the air in the annular gap, by cooling down at standstill of the vehicle up to Negative pressure drops. The right when operating the coolant pump effective skiving plate can not prevent this at standstill that due to the resulting negative pressure moisture or coolant leakage is pulled into the annular gap and settles there. The penetrating fluid affects the lubricating properties of the contained in the annular gap Grease detrimental, leads to corrosion and reduces thus the life of the rolling bearing.
Zusammenfassung der ErfindungSummary of the invention
Die Aufgabe der Erfindung ist es daher, eine Kühlmittelpumpe zu schaffen, mit der zuvor genannten Nachteile vermieden werden.The The object of the invention is therefore to provide a coolant pump to create, with the aforementioned disadvantages are avoided.
Die Aufgabe ist nach den Merkmalen des kennzeichnenden Teiles des Anspruchs 1 dadurch gelöst, dass die Dichtung der Wälzlagerung, die nicht der Gleitringdichtung zugewandt ist, sondern an der von den Pumpenrad abgewandten Seite der Wälzlagerung den Ringspalt dichtet, zumindest zeitweise zumindest einen Durchgang von dem Inneren des Lagers mit Fett und Wälzkörpern (Ringspalt) zur Umgebung der Kühlmittelpumpe aufweist. Die Seite der Wälzlagerung, die in Richtung Pumpenraum verschlossen ist, weist nach wie vor eine mit Unterdruck und Überdruck belastbare Dichtung auf, so dass Druckausgleich zwischen dem Ringspalt und der Umgebung auf der „trockenen" Seite der Wälzlagerung über den oder die Durchgänge zur Umgebung erfolgt. Das ist die Seite der Wälzlagerung, die in der Regel einem Riemenrad und nicht dem Pumpenraum zugewandt ist. Der Durchgang ist wenigstens eine peramente Belüftungsöffnung, so dass keine Druckdifferenzen zwischen dem Ringspalt und der Umgebung der Kühlmittelpumpe auftreten können oder ist druckabhängig einseitig oder beidseitig öffnend gestaltet. Druckabhängig öffnend gestaltete Durchgänge sind beispielsweise Membranen oder Dichtlippen, die bei Druckdifferenzen Dichtkontakt zumindest partiell abheben und/oder Durchgangsöffnungen freigeben. Durch die Gestaltung der Dichtung ist abgesichert, dass bei Druckdifferenzen zwischen Umgebung der Kühlmittelpumpe und dem Ringspalt in jedem Betriebszustand an der Seite der Dichtungsanordnung ein Druckausgleich erfolgt, die dem Pumpenrad nicht zugewandt ist.The The object is according to the features of the characterizing part of the claim 1 achieved in that the seal of the rolling bearing, which is not facing the mechanical seal, but at the of the impeller facing away from the roller bearing the annular gap seals, at least temporarily, at least one passage from the interior of the bearing with grease and rolling elements (annular gap) having the environment of the coolant pump. The side of rolling bearing, which is closed in the direction of the pump chamber, still points a seal that can be loaded with negative pressure and overpressure, allowing pressure equalization between the annular gap and the surrounding area the "dry" side of the rolling bearing over the passage (s) to the environment takes place. That is the Side of the rolling bearing, which is usually a pulley and does not face the pump room. The passage is at least a peramente vent, so no Pressure differences between the annular gap and the environment of the coolant pump can occur or is pressure-dependent one-sided or designed to open on both sides. Pressure-dependent opening designed passages are for example membranes or Sealing lips, the contact pressure at least partially at pressure differences lift off and / or release through openings. By the Design of the seal is secured that at pressure differences between the environment of the coolant pump and the annular gap in any operating condition on the side of the seal assembly Pressure equalization takes place, which is not facing the impeller.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung ist nachfolgend anhand von Ausführungsbeispielen näher erläutert. Es zeigen:The The invention is based on embodiments explained in more detail. Show it:
Detaillierte Beschreibung der ZeichnungenDetailed description the drawings
Druckdifferenzen
zwischen dem Ringspalt
Zusätzlich kann direkt vor der Dichtlippe ein Schleuderblech oder eine Schleuderhülse vorgesehen werden, mit der Spritzwasser, Schmutz oder ähnliche Einflüsse von den Belüftungsöffnungen ferngehalten werden. Außerdem ist es denkbar, Dichtungen mit zwei Dichtlippen einzusetzen, in denen beide der Dichtungen mit entsprechenden Durchgängen oder Belüftungsöffnungen versehen sind und die in Umfangsrichtung versetzt zueinander angeordnet sind.additionally Can directly before the sealing lip a slinger or a centrifugal sleeve be provided with the splash water, dirt or similar Influences kept away from the ventilation openings become. In addition, it is conceivable seals with two sealing lips insert, in which both of the seals with appropriate passages or ventilation holes are provided and the offset in the circumferential direction are arranged to each other.
- 11
- KühlmittelpumpeCoolant pump
- 22
- Gehäusecasing
- 33
- Wälzlagerungroller bearing
- 44
- Rotorwellerotor shaft
- 55
- Pumpenraumpump room
- 66
- Pumpenradimpeller
- 77
- Flanschflange
- 88th
- Riemenradpulley
- 99
- KugelBullet
- 1010
- Kugelrolleball roller
- 1111
- Außenringouter ring
- 1212
- InnenlaufbahnInner raceway
- 1313
- Dichtungpoetry
- 1414
- Dichtungpoetry
- 1515
- Dichtflächesealing surface
- 1616
- GleitringdichtungMechanical seal
- 1717
- Hohlraumcavity
- 1818
- Ringspaltannular gap
- 1919
- UmgebungSurroundings
- 2020
- Belüftungsöffnungventilation opening
- 2121
- Belüftungsöffnungventilation opening
- 2222
- Dichtlippesealing lip
- 2323
- nicht vergebenNot forgive
- 2424
- Dichtlippesealing lip
- 2525
- Membranmembrane
- 2626
- Durchgangpassage
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 1420154 A1 [0002, 0003] - EP 1420154 A1 [0002, 0003]
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006054743A DE102006054743A1 (en) | 2006-11-21 | 2006-11-21 | Coolant pump i.e. water pump, for cooling circuit of internal combustion engine, has seals, where one of seal seals annular gap at side turned from pump wheel and includes occasional passage from gap to pump environment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006054743A DE102006054743A1 (en) | 2006-11-21 | 2006-11-21 | Coolant pump i.e. water pump, for cooling circuit of internal combustion engine, has seals, where one of seal seals annular gap at side turned from pump wheel and includes occasional passage from gap to pump environment |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006054743A1 true DE102006054743A1 (en) | 2008-07-03 |
Family
ID=39465565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006054743A Withdrawn DE102006054743A1 (en) | 2006-11-21 | 2006-11-21 | Coolant pump i.e. water pump, for cooling circuit of internal combustion engine, has seals, where one of seal seals annular gap at side turned from pump wheel and includes occasional passage from gap to pump environment |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006054743A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2182257A1 (en) * | 2008-10-30 | 2010-05-05 | Lenze Drives GmbH | Seal assembly between a shaft and a housing section |
CN104197017A (en) * | 2014-08-01 | 2014-12-10 | 珠海仕高玛机械设备有限公司 | Water cooling oil-free spindle nose sealing structure for horizontal type concrete stirrer |
DE102016204301A1 (en) | 2016-03-16 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Pump device, in particular for a coolant pump and vehicle with the pump device |
DE102016204190A1 (en) | 2016-03-15 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Water pumps Storage |
DE102017129027A1 (en) * | 2017-12-06 | 2019-06-06 | Pierburg Gmbh | Sealing system for sealing a lubricated shaft bearing of a compressor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1420154A1 (en) | 2001-08-24 | 2004-05-19 | Nsk Ltd. | SEAL DEVICE FOR WATER PUMP, ROTATION SUPPORT DEVICE FOR WATER PUMP, AND WATER PUMP |
-
2006
- 2006-11-21 DE DE102006054743A patent/DE102006054743A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1420154A1 (en) | 2001-08-24 | 2004-05-19 | Nsk Ltd. | SEAL DEVICE FOR WATER PUMP, ROTATION SUPPORT DEVICE FOR WATER PUMP, AND WATER PUMP |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2182257A1 (en) * | 2008-10-30 | 2010-05-05 | Lenze Drives GmbH | Seal assembly between a shaft and a housing section |
CN104197017A (en) * | 2014-08-01 | 2014-12-10 | 珠海仕高玛机械设备有限公司 | Water cooling oil-free spindle nose sealing structure for horizontal type concrete stirrer |
DE102016204190A1 (en) | 2016-03-15 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Water pumps Storage |
DE102016204301A1 (en) | 2016-03-16 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Pump device, in particular for a coolant pump and vehicle with the pump device |
WO2017157368A1 (en) | 2016-03-16 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Vehicle having a pump device |
DE102017129027A1 (en) * | 2017-12-06 | 2019-06-06 | Pierburg Gmbh | Sealing system for sealing a lubricated shaft bearing of a compressor |
DE102017129027B4 (en) | 2017-12-06 | 2019-08-14 | Pierburg Gmbh | Sealing system for sealing a lubricated shaft bearing of a compressor |
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Legal Events
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---|---|---|---|
OR8 | Request for search as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120823 |
|
R163 | Identified publications notified |
Effective date: 20130502 |
|
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20131122 |