Dual-Rotor Water Pump Module Series Pressure Design
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Solution Overview
Problem
Traditional water pumps in series have inefficient working fluid paths with high impedance, leading to poor performance and increased space requirements, necessitating multiple pumps connected in series to achieve desired pressure.
Innovation Solution
A water pump module design featuring a pump body with two chambers and two rotors, where the input and output pipes are connected directly, reducing the fluid path length and eliminating the need for separate inlets and outlets, allowing for improved alignment and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If multiple pumps are connected in series to increase pump head, then the required pressure is achieved, but the working fluid path becomes long and impedance increases
Solution Approach 1:
The patent combines multiple pump chambers (first chamber, second chamber, third chamber) into a single integrated pump body, allowing multiple rotors to work in series while sharing common fluid pathways. This merging approach achieves the required pump head through multiple rotor stages while eliminating the need for separate external connections and long fluid paths that would occur with completely separate pump units.
2Stress or pressure
If pumps are arranged horizontally to achieve series connection, then pressure requirement is met, but the area occupied increases
Solution Approach 1:
The patent transitions from horizontal arrangement of separate pump units to a vertical stacking configuration within a single pump body. The first, second, and third chambers are arranged vertically along the pump body axis, with rotors stacked one above another. This dimensional change from horizontal to vertical arrangement significantly reduces the footprint area while maintaining the series connection capability for achieving required pump head.
3Reliability
If separate inlets and outlets are provided for each pump in series, then each pump functions independently, but material usage increases and manufacturing complexity increases
Solution Approach 1:
The patent implements a universal fluid pathway design where the pump body contains common inlet and outlet structures that serve all rotor chambers. The first chamber receives fluid through a common inlet, and the third chamber discharges through a common outlet, while the second chamber is interconnected with both. This multi-functional pathway design allows each rotor to function independently in series while reducing the total number of separate inlet/outlet components needed, thereby simplifying manufacturing and reducing material usage.
4Reliability
If connection conduits are used to communicate between chambers, then fluid flow is enabled, but the path length increases and impedance increases
Solution Approach 1:
The patent segments the pump body into multiple independent chambers (first, second, third chambers) that are directly communicated through strategically positioned openings in the chamber walls rather than through long external conduits. Each chamber is separated for independent rotor operation but connected through short internal passages, maintaining fluid flow continuity while minimizing path length and impedance between stages.
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 enhances pump head and pressure, reduces material and space requirements, and simplifies manufacturing and installation processes, resulting in improved performance and cost-effectiveness.
Implementation Method 1
a traditional water pump uses a motor to drive a rotor, so that the pressure of water flow is increased when it passes through the rotor at a high speed of rotation and flows out along an outer edge of the blade under the action of centrifugal force
Data Source
AI summary
A pump body includes a housing, a first and a second chambers separated and communicated by the housing, an input pipe communicated with the first chamber and an output pipe communicated with the second chamber. The input pipe has a water outlet located in the first chamber. The output pipe has a water inlet located in the second chamber. The first pump has a first rotor placed in the first chamber. The second pump has a second rotor placed in the second chamber, wherein an extension line of a rotating shaft of the second rotor is perpendicular to a plane where a rotating shaft of the first rotor located.