WO2020078621A1 - Einsteckkühlmittelpumpe mit dichtscheibe zur minimierung eines dichtspalts - Google Patents
Einsteckkühlmittelpumpe mit dichtscheibe zur minimierung eines dichtspalts Download PDFInfo
- Publication number
- WO2020078621A1 WO2020078621A1 PCT/EP2019/074084 EP2019074084W WO2020078621A1 WO 2020078621 A1 WO2020078621 A1 WO 2020078621A1 EP 2019074084 W EP2019074084 W EP 2019074084W WO 2020078621 A1 WO2020078621 A1 WO 2020078621A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- sealing
- plug
- coolant
- pump housing
- Prior art date
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
- F04D29/08—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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
-
- 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
- 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
- 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
- F04D29/622—Adjusting the clearances between rotary and stationary parts
-
- 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
- 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
- F01P2005/125—Driving auxiliary pumps electrically
-
- 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
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
Definitions
- the present invention relates to a plug-in coolant pump for
- Centrifugal pumps designed coolant pumps are used, the bearing shafts of which are driven directly by the crankshaft of the engine, for example by means of a belt drive. It is known to design such coolant pumps as plug-in pumps without their own spiral housing.
- the sealing gap on the impeller which is essential for volumetric efficiency, is defined by a corresponding counter contour on the motor. Closed impellers with a cover plate are used. By adding the manufacturing tolerances of the pump and the counter contour, there are usually large sealing gap heights which lead to a considerable reduction in the volumetric efficiency.
- a plug-in coolant pump for motor vehicles is provided with an impeller that is surrounded by a pump housing, the impeller being drivable about a longitudinal axis by means of a pump shaft, and the pump shaft passing through the pump housing, and between which A seal is provided for the pump shaft and the pump housing for sealing the coolant-carrying pump housing, and the pump housing has holding domes on which a sealing washer is attached, which adjusts a sealing gap between a pump inlet with pressure slope and the open impeller.
- the sealing gap is by using the
- the impeller can be open because a sealing washer is used. An open impeller is cheaper.
- the sealing disk is preferably arranged concentrically to the pump shaft and is designed as a sealing ring.
- the sealing disk is curved inward in the radial direction away from the impeller and one for shaping the impeller
- An electric motor is preferably provided which drives the pump shaft.
- the sealing washer is fastened to the holding domes by means of holding pins.
- At least three holding domes are preferably provided, which are arranged uniformly distributed in the circumferential direction to the longitudinal axis.
- the holding domes end with an edge of the pump housing in the longitudinal direction and thus do not protrude.
- the sealing disk has a sealing lip.
- the plug-in coolant pump described above is for installation in an installation bore of an engine block of an internal combustion engine
- Engine block having an installation bore and provided with a previously described plug-in coolant pump which is fastened to the engine block, the sealing lip being located between the sealing washer and engine block Gap seals.
- the engine block preferably has a pump inlet.
- the engine block may also include a volute casing.
- the pump housing is preferably located completely outside the engine block.
- FIG. 1 shows a longitudinal section through a coolant pump 1 along a pump shaft 2.
- An impeller 30, which is surrounded by a pump housing 3, is arranged on the pump shaft 2 in a manner fixed against relative rotation.
- the pump shaft 2 passes through the pump housing 3.
- a lip seal 4 is arranged between the pump shaft 2 and the pump housing 3 for sealing the coolant-carrying pump housing 3.
- the pump shaft 2 is preferably driven by means of an electric motor (not shown) for rotation about a longitudinal axis 100, which is preferably designed as a dry runner.
- the coolant pump 1 is designed as a plug-in pump, i.e. the pump housing 1 is connected to an engine block 5 of an internal combustion engine of a motor vehicle via interfaces 6.
- An inlet of the pump 7 and a spiral channel, not shown, are in the
- the interfaces 6 conventionally have corresponding bores 8, 9 through which the engine block 5 and the like
- Pump housing 3 are screwed together.
- the pump housing 3 is essentially cup-shaped and has an edge 10 on which the interfaces 6 are arranged.
- the pump shaft 2 projects beyond the edge of the pump housing 10 in the longitudinal direction 100.
- the motor block 5 has an installation bore 11 in the inlet 7. An end near the impeller
- Pump shaft 2 projects into the mounting hole 11 in the longitudinal direction.
- the impeller 30 itself lies completely outside the engine block 5.
- Retaining domes 12 are provided, which are part of the pump housing 3 and protrude from a bottom of the pump housing 13 on the side near the impeller and extend parallel to the longitudinal axis 100.
- the holding domes 12 are arranged distributed uniformly in the circumferential direction around the longitudinal axis 100. At least three holding domes 12 are preferably provided.
- the holding domes 12 are arranged in the immediate vicinity of the impeller 30 along the radius. There is an annular gap 14 between the envelope of the Impeller and the envelope of the retaining domes provided so that the impeller 30 can rotate without hindrance.
- the end of the holding domes 12 is approximately flush with the edge of the pump housing 10.
- the holding domes 12 are approximately cylindrical and have a central bore 15 which extends along the longitudinal axis of the domes.
- a sealing washer 16 which likewise has bores 17 which correspond to those of the holding domes, so that holding pins 18 can be used to firmly fasten the sealing washer 16 to the domes 12.
- the sealing washer 16 has an outer radius and an inner radius, the outer radius being dimensioned such that the washer rests on the domes 12 over the entire surface, but does not project beyond them.
- the width of the sealing washer is defined as the difference between the outer radius and the inner radius.
- the height of the sealing washer is the extent of the sealing washer parallel to the longitudinal axis 100. The width of the sealing washer is significantly larger than the height.
- the width is in a range between 10% to 30% of the outer radius, preferably in a range between 1mm and 3mm.
- the sealing disk 16 is curved inwards towards the longitudinal axis 100, in the direction of the engine block 5.
- the sealing disk 16 lies in the radial direction within the mounting hole 11. It does not project in the radial direction beyond the mounting hole 11 or the inlet 7 inwards towards the center.
- the sealing disk 16 protrudes radially inwards into the mounting hole 11, so that the sealing disk 16 forms a transition region to the suction chamber located in the engine block 5.
- the sealing disk 16 is arranged concentrically to the longitudinal axis 100. It is rotationally symmetrical.
- the shape of the sealing disk 16 is adapted to the shape of the open impeller 30, so that a sealing gap 19 located between the impeller 30 and the sealing disk 16 can be set to a minimum. Since the sealing gap 19 by the location and design of the
- Sealing disc 16 and the impeller 30 is defined, the size of the sealing gap 19 formed is independent of the manufacturing tolerances of the mounting hole of the engine block 11. Between the sealing disk 16 and the mounting hole of the engine block 11, a gap 20 can form, which is sealed by a sealing lip 21 becomes.
- the sealing lip 21 is fastened to the sealing disk 16 and is proceeding from the sealing disk 16 in the radial direction from curved outwards so that it bears perpendicular to the longitudinal axis 100 against the mounting hole 11.
- the sealing washer preferably has a collar on which the lip seal is pressed or vulcanized.
- the sealing lip 21 is particularly preferably seen in the radial direction, pressed onto the collar or vulcanized from the outside.
- the sealing lip 21 is flexible and seals the gap 20 between the sealing disk 16 and the engine block 5 due to the pressure drop between the pump pressure and the inlet pressure.
- the sealing washer is preferably made of steel.
- the coolant flows axially via the inlet 7 located in the engine block 5 to the impeller 30 and is guided radially via the vanes into a channel (not shown).
- the seal via the sealing disk 16 prevents backflow.
- sealing disk 16 also enables the use of open impellers, which are significantly cheaper to manufacture, since an additional cover disk can be dispensed with.
- the efficiency of the plug-in pump can be significantly increased, so that instead of one
- Belt drive a separate electric motor can be used as a drive.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201980083378.3A CN113242937A (zh) | 2018-10-18 | 2019-09-10 | 具有使密封间隙最小化的密封垫圈的插入式冷却剂泵 |
US17/286,036 US20210381520A1 (en) | 2018-10-18 | 2019-09-10 | Coolant plug-in pump with sealing washer to minimize the sealing gap |
BR112021007159-8A BR112021007159A2 (pt) | 2018-10-18 | 2019-09-10 | bomba de refrigeração de encaixe com arruela de vedação para a minimização de uma folga de vedação |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018125904.2 | 2018-10-18 | ||
DE102018125904.2A DE102018125904B4 (de) | 2018-10-18 | 2018-10-18 | Kühlmitteleinsteckpumpe mit Dichtscheibe zur Minimierung des Dichtspalts |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020078621A1 true WO2020078621A1 (de) | 2020-04-23 |
Family
ID=67928839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2019/074084 WO2020078621A1 (de) | 2018-10-18 | 2019-09-10 | Einsteckkühlmittelpumpe mit dichtscheibe zur minimierung eines dichtspalts |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210381520A1 (de) |
CN (1) | CN113242937A (de) |
BR (1) | BR112021007159A2 (de) |
DE (1) | DE102018125904B4 (de) |
WO (1) | WO2020078621A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021122505B3 (de) | 2021-08-31 | 2022-12-22 | Nidec Gpm Gmbh | Kraftfahrzeug-Kühlsystem mit einer elektrischen Kühlmittelpumpe |
DE102021131334B3 (de) | 2021-11-30 | 2023-01-26 | Nidec Gpm Gmbh | Kraftfahrzeug-Kühlsystem mit einer elektrischen Kühlmittelpumpe |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2681906A1 (fr) * | 1991-09-27 | 1993-04-02 | Renault Vehicules Ind | Pompe centrifuge pour circuit de liquide de refroidissement de moteur a combustion. |
US5427498A (en) * | 1992-11-30 | 1995-06-27 | Societe Europeenne De Propulsion | High performance centrifugal pump having an open-faced impeller |
US6732680B1 (en) * | 2003-01-31 | 2004-05-11 | Ford Global Technologies, Llc | Internal combustion engine with liquid coolant pump |
DE102010046448A1 (de) * | 2010-09-24 | 2012-03-29 | Schaeffler Technologies Gmbh & Co. Kg | Abdichtung für eine regelbare Kühlmittelpumpe |
JP2016065537A (ja) * | 2014-09-24 | 2016-04-28 | アイシン精機株式会社 | ウォータポンプ |
US20160169247A1 (en) * | 2014-12-15 | 2016-06-16 | Sulzer Management Ag | Method for the positioning of a cover disk of a pump and pump |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5295786A (en) * | 1990-12-27 | 1994-03-22 | Ebara Corporation | Liner ring for a pump |
DE10100373B4 (de) | 2001-01-05 | 2004-03-25 | Dr.Ing.H.C. F. Porsche Ag | Wasserpumpe zur Kühlmittelförderung in einer Brennkraftmaschine |
JP2003269165A (ja) | 2002-03-15 | 2003-09-25 | Aisin Seiki Co Ltd | ウォータポンプ |
CN101297140A (zh) * | 2005-09-22 | 2008-10-29 | 澳大利亚奥尔科公司 | 密封组件 |
-
2018
- 2018-10-18 DE DE102018125904.2A patent/DE102018125904B4/de not_active Expired - Fee Related
-
2019
- 2019-09-10 WO PCT/EP2019/074084 patent/WO2020078621A1/de active Application Filing
- 2019-09-10 BR BR112021007159-8A patent/BR112021007159A2/pt not_active IP Right Cessation
- 2019-09-10 CN CN201980083378.3A patent/CN113242937A/zh active Pending
- 2019-09-10 US US17/286,036 patent/US20210381520A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2681906A1 (fr) * | 1991-09-27 | 1993-04-02 | Renault Vehicules Ind | Pompe centrifuge pour circuit de liquide de refroidissement de moteur a combustion. |
US5427498A (en) * | 1992-11-30 | 1995-06-27 | Societe Europeenne De Propulsion | High performance centrifugal pump having an open-faced impeller |
US6732680B1 (en) * | 2003-01-31 | 2004-05-11 | Ford Global Technologies, Llc | Internal combustion engine with liquid coolant pump |
DE102010046448A1 (de) * | 2010-09-24 | 2012-03-29 | Schaeffler Technologies Gmbh & Co. Kg | Abdichtung für eine regelbare Kühlmittelpumpe |
JP2016065537A (ja) * | 2014-09-24 | 2016-04-28 | アイシン精機株式会社 | ウォータポンプ |
US20160169247A1 (en) * | 2014-12-15 | 2016-06-16 | Sulzer Management Ag | Method for the positioning of a cover disk of a pump and pump |
Also Published As
Publication number | Publication date |
---|---|
DE102018125904A1 (de) | 2020-04-23 |
CN113242937A (zh) | 2021-08-10 |
US20210381520A1 (en) | 2021-12-09 |
BR112021007159A2 (pt) | 2021-07-20 |
DE102018125904B4 (de) | 2022-05-12 |
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