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Electric water pump

a technology of electric water pump and permanent magnet, which is applied in the direction of positive displacement liquid engine, piston pump, fluid engine, etc., can solve the problems of increasing fuel consumption of vehicles, and achieve the effect of minimizing the leakage of magnetic flux of permanent magnet and improving performance and durability

Active Publication Date: 2015-01-13
HYUNDAI MOTOR CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]Various aspects of the present invention are directed to provide an electric water pump having advantages of improved performance and durability and to provide an electric water pump which minimizes magnetic flux leakage of a permanent magnet by optimizing a shape of a rotor core.

Problems solved by technology

However, if the engine speed is increased, fuel consumption of a vehicle also increases.

Method used

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Examples

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Embodiment Construction

[0029]Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is / are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0030]An exemplary embodiment of the present invention will hereinafter be described in detail with reference to the accompanying drawings.

[0031]FIG. 1 is a perspective view of an electric water pump according to an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1.

[...

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PUM

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Abstract

An electric water pump apparatus may include a body having a stator chamber and a rotor chamber therein, a stator having a hollow cylindrical shape and being disposed in the stator chamber and generating a magnetic field, wherein the stator fluidly insulates the stator chamber and the rotor chamber, a rotor disposed in the rotor chamber and enclosed by the stator, wherein the rotor is rotated by the magnetic field, and a pump cover connected to the body and forming a volute chamber therein, wherein the volute chamber and the rotor chamber are fluidly-communicated through a connecting hole formed to the body and a coolant is supplied to the rotor chamber through the connection hole, wherein the stator includes a stator groove formed in an inner circumference therein and the stator groove is fluid-connected to the rotor chamber and the volute chamber through the connection hole.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority to Korean Patent Application No. 10-2009-0112236 filed on Nov. 19, 2009, the entire contents of which is incorporated herein for all purposes by this reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an electric water pump. More particularly, the present invention relates to an electric water pump having improved performance and durability.[0004]2. Description of Related Art[0005]Generally, a water pump circulates coolant to an engine and a heater in order to cool the engine and heat a cabin. The coolant flowing out from the water pump circulates through and exchanges heat with the engine, the heater, or the radiator, and flows back in the water pump. Such a water pump is largely divided into a mechanical water pump and an electric water pump.[0006]The mechanical water pump is connected to a pulley fixed to a crankshaft of the engine and is dri...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F04B35/04F04D13/06
CPCF04D13/064
Inventor YI, JEAWOONGLEE, SEUNG YONGKIM, GYUHWANKIM, YUN SEOKPARK, YONG SUNOH, TAE-SUNGKIM, KYUNG-HWANLEE, JONG-HOONLEE, KWANG-HO
Owner HYUNDAI MOTOR CO LTD
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