KR101502285B1 - Electric Water Pump - Google Patents
Electric Water Pump Download PDFInfo
- Publication number
- KR101502285B1 KR101502285B1 KR20140147833A KR20140147833A KR101502285B1 KR 101502285 B1 KR101502285 B1 KR 101502285B1 KR 20140147833 A KR20140147833 A KR 20140147833A KR 20140147833 A KR20140147833 A KR 20140147833A KR 101502285 B1 KR101502285 B1 KR 101502285B1
- Authority
- KR
- South Korea
- Prior art keywords
- bearing
- water pump
- thrust bearing
- impeller
- housing
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- 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
- F04D29/041—Axial thrust balancing
- F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
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- 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
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
-
- 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
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- 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
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/11—Kind or type liquid, i.e. incompressible
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- 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
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- 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
-
- 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
- Y10S417/00—Pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to an electric water pump used in an automobile, and more particularly, to an electric water pump capable of enhancing durability and reducing power loss.
An electric water pump according to the present invention includes a housing, a can, a rotary shaft, a lower bearing, an upper bearing, a thrust bearing, a rotor, and an impeller. The can is embedded in the housing. The rotating shaft is mounted inside the can. The lower bearing is press-fitted into a lower portion of the can to support one end of the rotation shaft. The upper bearing is detachably mounted on the upper part of the can to support the other end of the rotary shaft. The thrust bearing is coupled to the rotating shaft to support the upper bearing. The rotor has a thrust bearing fixing part formed by insert injection and fixedly coupling the thrust bearing, and is fixedly coupled to the rotation shaft. The impeller is detachably mounted on a rotary shaft projecting to the outside of the can.
The present invention does not require the use of a rubber cup by injecting and fixing the plastic thrust bearing formed of ceramic. Therefore, the durability of the water pump can be improved.
In addition, according to the present invention, the dimensional tolerance between the housing and the impeller is reduced, and the flow loss can be reduced.
Description
The present invention relates to an electric water pump used in an automobile, and more particularly, to an electric water pump capable of enhancing durability and reducing power loss.
Generally, a water pump is a device for circulating cooling water to an engine and a heater for cooling the engine and heating the room. The cooling water discharged from the water pump exchanges heat with the engine, the heater, or the radiator, circulates, and then flows back to the water pump. These water pumps are largely divided into mechanical water pumps and electric water pumps. Electric water pumps are widely used which can control the engine cooling in an optimal state and simplify the structure around the engine to improve the fuel efficiency of the vehicle.
Japanese Patent Application No. 10-1072328 discloses a conventional electric water pump, and FIG. 1 is a sectional view of the electric water pump disclosed in the above-mentioned conventional patent.
In the case of the conventional water pump shown in Fig. 1, the
In the case of the water pump, when the
Further, the
The present invention is intended to solve the above problems. An object of the present invention is to provide an electric water pump capable of reducing a flow loss by reducing a gap between a housing and an impeller.
It is another object of the present invention to provide an electric water pump of high durability by not using a cup made of a rubber material.
An electric water pump according to the present invention includes a housing, a can, a rotary shaft, a lower bearing, an upper bearing, a thrust bearing, a rotor, and an impeller. The can is embedded in the housing. The rotating shaft is mounted inside the can. The lower bearing is press-fitted into a lower portion of the can to support one end of the rotation shaft. The upper bearing is detachably mounted on the upper part of the can to support the other end of the rotary shaft. The thrust bearing is coupled to the rotating shaft to support the upper bearing. The rotor has a thrust bearing fixing part formed by insert injection and fixedly coupling the thrust bearing, and is fixedly coupled to the rotation shaft. The impeller is detachably mounted on a rotary shaft projecting to the outside of the can.
In the electric water pump described above, it is preferable that the rotary shaft has a projection for supporting one end of the rotor. The thrust bearing is preferably supported at one end of the thrust bearing and at an outer circumferential surface thereof. Preferably, the thrust bearing fixing portion is insert-injected so as to surround the end portion of the outer circumferential surface of the thrust bearing.
The present invention does not require the use of a rubber cup by injecting and fixing the plastic thrust bearing formed of ceramic. Therefore, the durability of the water pump can be improved.
In addition, according to the present invention, the dimensional tolerance between the housing and the impeller is reduced, and the flow loss can be reduced.
1 is a cross-sectional view of a conventional water pump,
2 is a sectional view of one embodiment of an electric water pump according to the present invention,
FIG. 3 is a cross-sectional view of the can of the embodiment shown in FIG. 2,
Fig. 4 is a cross-sectional view of the inner diameter of the bearing of Fig. 2,
FIG. 5 is a cross-sectional view of the can in which the rotating shaft and the rotor are mounted on the can,
FIG. 6 is a cross-sectional view of the rotor shown in FIG. 2, in which a rotor and a thrust bearing are mounted,
Fig. 7 is a sectional view of the rotor shown in Fig. 2 before insert injection,
Fig. 8 is an exploded perspective view of the water pump shown in Fig. 2,
Fig. 9 is a conceptual view of the upper bearing of the embodiment shown in Fig. 2,
10 is a conceptual view of the can of the embodiment shown in Fig.
An electric water pump according to an embodiment of the present invention will be described with reference to FIGS. 2 to 10. FIG.
The electric water pump according to the present invention includes a
The
The
One end of the thrust bearing 135 is supported by the
The
In this embodiment, the thrust bearing 135 has one end supported by the projection of the
In the case of the conventional water pump shown in FIG. 1, the
The
In this embodiment, the
At this time, the
101: tool 110: housing
115: can 116: mounting projection
117: bolt tab 120: rotary shaft
121: projection 125: lower bearing
130: Upper bearing 131: Bolt
132: bolt hole 133: mounting hole
135: thrust bearing 140: rotor
141: thrust bearing fixing portion 145: impeller
Claims (2)
A can accommodated in the housing,
A rotation shaft mounted on the inside of the can with a projection formed on an outer circumferential surface thereof,
A lower bearing press-fitted to a lower portion of the can to support one end of the rotary shaft,
An upper bearing detachably mounted on the upper portion of the can to support the other end of the rotary shaft,
A thrust bearing which is supported at one end thereof by the protrusion and whose outer circumferential surface is integrally formed and is coupled to the rotation shaft to support the upper bearing,
A thrust bearing fixing part for insert-molding the end of the outer circumferential surface of the thrust bearing to fix the thrust bearing to the fixed part; a rotor supported by the protrusion and fixedly coupled to the rotation shaft;
And an impeller detachably mounted on a rotating shaft protruding outside the can.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20140147833A KR101502285B1 (en) | 2014-10-29 | 2014-10-29 | Electric Water Pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20140147833A KR101502285B1 (en) | 2014-10-29 | 2014-10-29 | Electric Water Pump |
Publications (1)
Publication Number | Publication Date |
---|---|
KR101502285B1 true KR101502285B1 (en) | 2015-03-12 |
Family
ID=53027461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20140147833A KR101502285B1 (en) | 2014-10-29 | 2014-10-29 | Electric Water Pump |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101502285B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101823896B1 (en) * | 2015-11-12 | 2018-02-01 | 현대자동차주식회사 | Canned Type Electric Water Pump |
KR20210034924A (en) * | 2019-09-23 | 2021-03-31 | 주식회사 코아비스 | Electric water pump |
US10995759B2 (en) | 2019-03-19 | 2021-05-04 | Coavis | Water pump |
KR20210074839A (en) * | 2019-12-12 | 2021-06-22 | 주식회사 고아정공 | Rotor assembly and electric water pump including the same |
KR102659433B1 (en) | 2022-10-31 | 2024-04-22 | 지엠비코리아 주식회사 | Elecgric water pump assembly |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR950009734Y1 (en) * | 1990-06-20 | 1995-11-22 | 주식회사 Lg | Canned pump motor |
JP2005076581A (en) * | 2003-09-02 | 2005-03-24 | Oken Ltd | Diaphragm pump, and method for assembling the same |
KR20080001619A (en) * | 2006-06-29 | 2008-01-03 | 니혼 덴산 산쿄 가부시키가이샤 | Centrifugal pump, method of regulating characteristics of the same, and manufacturing method thereof |
KR20110125103A (en) * | 2010-05-12 | 2011-11-18 | 엘지전자 주식회사 | Brushless dc motor and drarin pump having the same |
-
2014
- 2014-10-29 KR KR20140147833A patent/KR101502285B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR950009734Y1 (en) * | 1990-06-20 | 1995-11-22 | 주식회사 Lg | Canned pump motor |
JP2005076581A (en) * | 2003-09-02 | 2005-03-24 | Oken Ltd | Diaphragm pump, and method for assembling the same |
KR20080001619A (en) * | 2006-06-29 | 2008-01-03 | 니혼 덴산 산쿄 가부시키가이샤 | Centrifugal pump, method of regulating characteristics of the same, and manufacturing method thereof |
KR20110125103A (en) * | 2010-05-12 | 2011-11-18 | 엘지전자 주식회사 | Brushless dc motor and drarin pump having the same |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101823896B1 (en) * | 2015-11-12 | 2018-02-01 | 현대자동차주식회사 | Canned Type Electric Water Pump |
US10995759B2 (en) | 2019-03-19 | 2021-05-04 | Coavis | Water pump |
KR20210034924A (en) * | 2019-09-23 | 2021-03-31 | 주식회사 코아비스 | Electric water pump |
KR102258293B1 (en) * | 2019-09-23 | 2021-06-01 | 주식회사 코아비스 | Electric water pump |
KR20210074839A (en) * | 2019-12-12 | 2021-06-22 | 주식회사 고아정공 | Rotor assembly and electric water pump including the same |
KR102289871B1 (en) * | 2019-12-12 | 2021-08-17 | 주식회사 고아정공 | Rotor assembly and electric water pump including the same |
KR102659433B1 (en) | 2022-10-31 | 2024-04-22 | 지엠비코리아 주식회사 | Elecgric water pump assembly |
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