Electric Water Pump With Rotating Valve Body
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Solution Overview
Problem
The increasing number of parts required for cooling water supply in electric vehicles leads to higher manufacturing costs and assembly complexities due to the need for multiple valves in electric water pumps, making it difficult to control the cooling water circuit effectively.
Innovation Solution
An integrated electric water pump design that combines the functions of an electric water pump and a valve, featuring a housing with cooling water inlets and outlets, a stator, rotor, impeller, and a driving device that rotates the pump body to selectively communicate with multiple cooling water outlets, reducing the need for separate valve devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple valves are disposed in the electric water pump to control cooling water paths, then the cooling water distribution function is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the valve function into the pump body structure by providing multiple outlets directly on the pump body and using a rotation body with selective fluid communication. This integration eliminates the need for separate valve components while maintaining the ability to control cooling water distribution to different locations.
Solution Approach 2:
The pump body is designed with multiple outlets and a rotation body that can selectively communicate with different outlets, enabling the single pump unit to perform multiple functions: pumping cooling water and distributing it to various locations. This multi-functionality replaces what would traditionally require separate valves.
2Adaptability or versatility
If multiple valves are disposed in the electric water pump to control cooling water paths, then the cooling water distribution function is improved, but the manufacturing cost and assembly time increase
Solution Approach 1:
The valve function is merged into the pump body structure through multiple outlets and a rotation body mechanism, eliminating the need for separate valve components. This integration reduces the total number of parts, simplifying manufacturing and assembly processes while maintaining cooling water distribution capability.
3Adaptability or versatility
If multiple valves are disposed in the electric water pump to control cooling water paths, then the cooling water distribution function is improved, but the packaging space requirement increases
Solution Approach 1:
The valve function is merged into the pump body structure, eliminating separate valve components and reducing the overall volume required for the cooling water control system. The multiple outlets and rotation body are integrated within the existing pump housing space.
Solution Approach 2:
The rotation body and multiple outlets are nested within the pump body structure, with the rotation body positioned inside the pump housing and outlets arranged on the pump body surface. This nested arrangement maximizes space utilization and minimizes the overall packaging volume.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This integration reduces manufacturing costs and assembly time by allowing the electric water pump to perform both pumping and water distribution with a single component, eliminating the need for additional valves and simplifying the cooling water circuit management in electric vehicles.
Implementation Method 1
The electric water pump pumps cooling water while an impeller rotates by power generated by a driving motor operated by electric energy
Implementation Method 2
an impeller rotates by power generated by a driving motor operated by electric energy
Data Source
AI summary
An electric water pump includes: a housing in which a cooling water inlet and a plurality of cooling water outlets are formed; a stator provided inside the housing; a rotor that is provided inside the housing and spaced apart from the stator at a predetermined interval in a radial direction; and an impeller provided integrally with an upper portion of the rotor. The electric water pump further includes: a pump body provided between the stator and the rotor, and having a first middle outlet; and a driving device selectively fluidly communicating any one of the plurality of cooling water outlets, and the first middle outlet by rotating the pump body at a predetermined angle.