Over-Molded Stator Water Pump for Waterproofing and Cooling
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Solution Overview
Problem
Conventional electric water pumps require complex and costly waterproofing processes, leading to lower productivity and durability due to individual component assembly and re-assembly, which are vulnerable to vibration.
Innovation Solution
An electric water pump with an over-molding stator where the stator and coils are integrally molded, forming flow paths and insulating the coils without affecting dimensional accuracy, reducing the need for separate components and assembly processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components are individually waterproofed and then re-assembled, then waterproofing is achieved, but productivity decreases and manufacturing costs increase
Solution Approach 1:
The patent merges the waterproofing function with the stator structure by integrating the sealing member into the stator body as a unified component. This eliminates the need for separate waterproofing processes and re-assembly operations, thereby improving productivity while maintaining reliable waterproofing through the integrated design
2Reliability
If multiple components are re-assembled, then waterproofing is achieved, but device complexity increases
Solution Approach 1:
The sealing member is merged with the stator structure to form an integrated waterproofing system. This reduces device complexity by eliminating separate waterproofing components and simplifying the assembly process, while maintaining effective waterproofing through the unified design
3Reliability
If components are re-assembled, then waterproofing is achieved, but durability decreases due to vibration vulnerability
Solution Approach 1:
The sealing member is integrated into the stator structure as a unified component, eliminating interfaces between separate parts that could be vulnerable to vibration. This integration enhances durability by creating a more robust waterproofing system that can better withstand vibrational stresses during operation
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 approach simplifies manufacturing, enhances durability by minimizing vibration risks, and maintains dimensional accuracy while providing effective insulation and cooling through integrated flow paths.
Implementation Method 1
the molding part is injected onto the stator to surround the entire coil while having a plurality of flow paths formed between the coils and passing through in a direction of the rotating shaft
Data Source
AI summary
Provided is an electric water pump with an over-molding stator for improving a flow structure and a dimensional accuracy in the water pump. The pump largely includes: a stator including a rotor accommodation part accommodating a rotor and a plurality of coils arranged around a rotating shaft of the rotor in a circumferential direction; and a molding part surrounding the stator to insulate the plurality of coils, wherein the molding part is injected onto the stator to surround the entire coil while having a plurality of flow paths formed between the coils and passing through in a direction of the rotating shaft.