Water Pump Integrated Housing Reduces Parts and Simplifies Assembly
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Solution Overview
Problem
Conventional water pumps have a complex drive shaft support structure and require multiple parts to seal the impeller and rotor, complicating the manufacturing process and increasing the number of components.
Innovation Solution
A water pump design featuring a housing with a support shaft, an impeller on the upper portion, a stator inside the housing, and a rotor rotatably supported by the support shaft, connected via a sleeve bearing connecting member, which reduces the number of parts and simplifies assembly by partitioning the stator and rotor with a housing, preventing water from entering the stator and utilizing metal components for effective heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional drive shaft support structure is used with multiple bearings to seal the impeller and rotor, then sealing reliability is improved, but device complexity increases and manufacturing process becomes complicated
Solution Approach 1:
The patent combines the drive shaft support structure with the housing into a unified integrated structure. The housing itself serves as the support structure, eliminating the need for separate bearing housings and multiple bearings. This merging reduces device complexity while maintaining sealing reliability through the integrated design that incorporates necessary sealing features directly into the housing structure.
2Reliability
If multiple separate components are used to support the drive shaft and seal connections, then functional reliability is improved, but the number of parts increases
Solution Approach 1:
The patent merges multiple functional components into the housing structure. The housing simultaneously serves as the support structure, bearing mounting structure, and sealing structure. This consolidation reduces the number of separate parts while maintaining all necessary functions through the integrated design, directly addressing the contradiction between functional reliability and part quantity.
3Reliability
If conventional sealing structures with multiple components are used, then sealing effectiveness is improved, but ease of manufacture deteriorates
Solution Approach 1:
The integrated housing structure combines sealing features with the main structural components, allowing sealing elements to be positioned and secured within the housing during a single manufacturing or assembly process. This eliminates the need for separate sealing component installations, improving ease of manufacture while maintaining sealing effectiveness through the unified design.
4Shape
If the rotor center is positioned at the same level as the stator center, then structural symmetry is improved, but device complexity increases due to additional support components
Solution Approach 1:
The patent intentionally positions the rotor center below the stator center, creating an asymmetric configuration. This asymmetric positioning eliminates the need for additional support components at the lower portion of the rotor, as the offset position allows the rotor to be supported by the housing structure in a simpler manner. The asymmetric design reduces device complexity while maintaining structural integrity.
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 design reduces the number of parts and simplifies the manufacturing process, prevents water from entering the stator, and effectively dissipates heat using metal components, enhancing the water pump's performance and reliability.
Implementation Method 1
a connecting member inserted around the supporting shaft to rotatably support the rotor and connecting between the rotor and the impeller
Implementation Method 2
the housing and the lower casing are made of metal with excellent thermal conductivity to smoothly discharge heat generated in the water pump
Data Source
AI summary
Provided is a water pump including: a housing; a support shaft fixed to the housing; an impeller disposed on an upper portion of the housing; a stator disposed inside the housing; a rotor rotatably supported to the support shaft; and a connecting member inserted in the supporting shaft to rotatably support the rotor and connecting between the rotor and the impeller, thereby reducing the number of parts and simplifying a manufacturing process.