Oil Pump Rotor Analysis with Constant Sub-Chamber Division
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Solution Overview
Problem
Existing oil pump designs face challenges in accurately predicting rotor and oil behavior due to variations in the number of sub-chambers caused by changing contact points between inner and outer rotors, leading to errors in volume calculation.
Innovation Solution
The analyzer employs a method to set division points using first, second, and third points on the inner and outer rotors to maintain a constant number of sub-chambers, ensuring accurate volume calculation and prediction of rotor and oil behavior by continuously deriving volume changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the chamber is divided into sub-chambers using contact points between inner rotor and outer rotor as division points, then the division reflects actual physical contact, but the number of sub-chambers varies causing calculation errors
Solution Approach 1:
The patent divides the chamber into sub-chambers using multiple types of division points (first, second, and third points) rather than relying solely on contact points. This segmentation approach ensures that the chamber is consistently divided into a fixed number of sub-chambers regardless of rotor contact variations, eliminating calculation errors while maintaining physical relevance.
Solution Approach 2:
The patent introduces angular parameters (angles α and β) to define the positions of division points on the rotors. By changing these angular parameters dynamically while maintaining the fixed number of sub-chambers, the system adapts to rotor contact variations without affecting the stability of the chamber division structure.
2Measurement precision
If multiple types of division points are used to maintain constant sub-chamber number, then volume calculation accuracy improves, but the complexity of setting division points increases
Solution Approach 1:
The patent employs dynamic angular parameters (α and β) that can be adjusted based on rotor positions and contact points. This dynamic approach allows the system to maintain a fixed number of sub-chambers while adapting to changing operational conditions, balancing calculation accuracy with manageable complexity through parameter-based control.
Data Source
AI summary
An analyzer includes at least one processor and at least one memory. The at least one processor is configured to: set, as a division point, a first point at which an inner rotor and an outer rotor of a pump come into contact with each other; set, as the division point, a second point on the outer rotor that is located on an extension line connecting a center and an apex of the inner rotor; set, as a division point, a third point that changes according to an angle between a reference point and the second point; divide a chamber into sub-chambers by connection lines each connecting the center of the inner rotor and one of the first point, the second point, and the third point; and when the first and third points overlap each other, divide the chamber without using the third point overlapping the first point.