Integrated Impeller-Rotor Water Pump Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing water pumps are difficult to miniaturize due to separate configurations of the impeller and rotor, and their complex structure increases manufacturing costs and reduces durability.
Innovation Solution
A water pump design that combines the impeller and rotor without separate components, using a synthetic resin mold to firmly fix the shaft and allow rotation of the rotor by a magnetic field, eliminating the need for a bearing and sealing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the impeller and rotor are configured separately, then the pump can circulate water effectively, but the pump size increases and manufacturing cost increases
Solution Approach 1:
The patent combines the impeller and rotor into a single integrated component structure. The impeller is formed as one piece with the rotor, eliminating the need for separate components and their associated connections. This merging reduces the overall pump volume while maintaining water circulation functionality through the integrated rotating assembly.
2Productivity
If separate components are used for the impeller and rotor, then water circulation can be achieved, but the pump structure becomes complex requiring bearings and sealing structures
Solution Approach 1:
By merging the impeller and rotor into a single integrated component, the patent eliminates the need for separate bearings and sealing structures that would be required to connect and protect separate components. The integrated design reduces the number of parts while maintaining the water circulation function.
Solution Approach 2:
The integrated impeller-rotor structure serves multiple functions simultaneously: it acts as both the impeller for water circulation and the rotor for magnetic field interaction, eliminating the need for separate components and their associated support structures.
3Device complexity
If the shaft is not firmly fixed, then the pump structure can be simpler, but the pump durability decreases
Solution Approach 1:
The shaft is preliminarily fixed in a dedicated fixing support structure before the impeller-rotor assembly is integrated. This pre-positioning and firm fixation of the shaft ensures stability and durability while maintaining overall structural simplicity, as the fixing support is incorporated into the integrated design rather than being a separate complex assembly.
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
The design miniaturizes the pump, enhances durability by firmly fixing the shaft, and improves rotation efficiency, reducing manufacturing costs and enabling easier installation in small spaces.
Implementation Method 1
the rotor rotates by a magnetic field generated from the stator
Data Source
AI summary
A water pump includes: an upper housing formed with an inlet and an outlet of fluid; a lower housing installed to fit in a lower side of the upper housing, having a receiving space formed therein; a shaft fixing support having a lower part of a protrudedly formed shaft inserted in the center of a bottom part of the lower housing; an impeller installed around the shaft; a rotor configured by having a magnet installed around a rotor core; a stator installed inside the lower housing; a lower cover; a shaft upper part fixing support member installed in an upper side of the shaft erectedly inserted in the shaft fixing support; and a synthetic resin mold member formed with a first synthetic resin mold around an outer side of the shaft fixing support and around the shaft, and a second synthetic resin mold around an outer side of the rotor.