Water pump

Abstract

A water pump includes: a body portion including a housing where an inlet port and a discharge port, an impeller accommodated inside the housing and introducing or discharging the cooling water, a rotation shaft coupled to the impeller and rotating the impeller, and a cooling water flow rate control unit arranged above the impeller and operating to selectively open or close the discharge port; a cylinder portion provided above the cooling water flow rate control unit and formed therein a hydraulic space accommodating cooling water that applies pressure to the cooling water flow rate control unit; a piston located inside the hydraulic space and pressurizing the cooling water present inside the hydraulic space; a driving unit coupled to a side surface of the cylinder portion; and a lock preventing member located at an inner surface of the cylinder portion.

Description

TECHNICAL FIELD[0001]The present disclosure relates to a water pump, and more particularly, to a water pump that cools an engine by applying pressure to introduced cooling water to circulate inside the engine.BACKGROUND ART[0002]In general, a water pump denotes a pump that cools an electronic component inside a vehicle by forcibly circulating cooling water inside an engine. A machine that obtains power by using an explosive force of fuel, such as an engine of an automobile, generates high temperature heat during operation. When the high temperature heat is not suitably controlled, not only the engine itself but also another adjacent machine are adversely affected. Accordingly, cooling water is inevitably used to cool such heat.[0003]As a technology related to such a water pump, there are a mechanical water pump operating by receiving a part of engine power, a clutch type water pump including a clutch that selectively blocks engine power transmitted to a water pump impeller, and a va...

AI Technical Summary

Benefits of technology

The present water pump has the following technical effects: a simple structure, prevention of friction and noise between internal components, and adjustable flow rate of discharged cooling water. Additionally, a lock preventing member is provided to prevent locking when the rotor is rotated in reverse.

Problems solved by technology

When the high temperature heat is not suitably controlled, not only the engine itself but also another adjacent machine are adversely affected.

Accordingly, cooling water is inevitably used to cool such heat.

Also, in a conventional clutch type water pump, friction and noise are generated due to coupling of a clutch and a friction portion with an operation of an electromagnet.

Further, since a conventional variable water pump uses a separate component for controlling a flow rate, a structure of the water pump becomes complicated and price of the product is increased.

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