Rotary Electric Machine Cooling Layout for Compact Liquid Supply
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Solution Overview
Problem
Existing cooling structures for rotary electric machines face challenges in miniaturization due to the protrusion of refrigerant passage pipes, which hinders the compact design of the entire device.
Innovation Solution
A device configuration that includes a rotary electric machine, a liquid supply member, and a facing member where the liquid is supplied to the liquid supply member via the facing member, which faces the rotary electric machine in the axial direction, thereby suppressing the protrusion of the liquid supply member and enabling miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the liquid supply member protrudes from the outer periphery of the rotary electric machine to supply liquid, then the liquid can be supplied to the rotary electric machine, but the device size increases and miniaturization becomes difficult
Solution Approach 1:
The liquid supply path is redirected from a radial direction (protruding from outer periphery) to an axial direction (through the facing member). The liquid supply member extends in the axial direction rather than radially, allowing liquid to be supplied through the facing member in the axial direction, thus reducing device size while maintaining liquid supply capability
Solution Approach 2:
The facing member is designed to serve dual functions: it acts as a structural component facing the rotary electric machine and simultaneously serves as a liquid supply interface. The liquid supply member is integrated with the facing member, allowing the facing member to function both as a structural element and as part of the liquid delivery system, eliminating the need for separate protruding supply ports
2Length of moving object
If the liquid supply member is integrated within the facing member structure, then device miniaturization is achieved, but the liquid supply path becomes more complex
Solution Approach 1:
The liquid supply member and facing member are merged into a single integrated structure. The liquid supply member is positioned within or as part of the facing member, combining two components into one unified element. This integration reduces the number of separate parts and simplifies the overall structure while achieving miniaturization
Solution Approach 2:
The liquid supply member is nested within the facing member structure. The supply member is positioned inside or within the boundaries of the facing member, allowing one component to be contained within another. This nesting arrangement achieves compact integration while maintaining functional independence of each component
Data Source
AI summary
A device includes a rotary electric machine, a liquid supply member configured to supply liquid to the rotary electric machine, and a facing member facing the rotary electric machine in an axial direction with the liquid supply member interposed therebetween. The liquid is supplied to the liquid supply member via the facing member.