Electric Pump Housing Design for Rotor Alignment
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Solution Overview
Problem
Conventional electric pumps face issues with positional displacement between the pump rotor and suction/discharge ports due to assembly errors, leading to inefficient oil feeding.
Innovation Solution
The electric pump design includes a pump housing with a first and second housing portion, where the first housing portion has an accommodating recess for the pump rotor and a blocking portion to form a pump chamber, with suction and discharge ports positioned to prevent displacement, ensuring proper alignment and assembly accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pump housing and pump plate are assembled separately with positional displacement, then the assembly is easier to manufacture, but the alignment between pump rotor and ports deteriorates
Solution Approach 1:
The pump housing is divided into a first housing portion and a second housing portion, where the first housing portion integrates both the accommodating recess for the pump rotor and the suction/discharge ports. This merging of functions within a single component eliminates positional displacement issues between separately assembled parts while maintaining manufacturing ease through modular design.
2Productivity
If the pump rotor position is adjusted for precise alignment, then the oil feeding efficiency is improved, but the assembly complexity increases
Solution Approach 1:
The first housing portion is pre-designed with the accommodating recess and ports positioned in precise predetermined relationships. This preliminary action of establishing correct positions during manufacturing eliminates the need for complex adjustment procedures during assembly, maintaining both high oil feeding efficiency and simple assembly processes.
Data Source
AI summary
An electric pump includes a motor rotor provided in a first end region in the axial direction of a rotary shaft, a pump rotor provided in a second end region in the axial direction of the rotary shaft, and a pump housing supporting the rotary shaft. The pump housing has a first housing portion for accommodating the pump rotor and a second housing portion having a blocking portion. The first housing portion has a suction port for drawing in fluid and a discharge port for discharging the drawn-in fluid.