Rotary Electric Machine Elastic Partition Cooling
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Solution Overview
Problem
Existing rotary electric machines with coolant passages face inefficiencies in cooling medium flow directionality and retention, leading to suboptimal cooling efficiency and potential deterioration due to retained high-temperature media.
Innovation Solution
A rotary electric machine design featuring a ring-like passage with an elastic partition member that interferes with the cooling medium flow in a shorter channel, guiding it through a longer channel for improved efficiency, and utilizing an elastic material to maintain contact with the passage inner surface, preventing movement and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a partition member is provided in the shorter channel to direct cooling medium flow, then cooling efficiency is improved, but the partition member may move or detach due to flow pressure
Solution Approach 1:
The partition member is made of elastic material that can flexibly adapt to flow pressure while maintaining its position. The elastic material allows the partition member to deform under pressure and then return to its original shape, preventing permanent displacement or detachment while continuing to direct the cooling medium flow effectively through the longer channel.
2Strength
If a rigid partition member is used to maintain structural strength, then mechanical strength is improved, but assembly becomes difficult and wear increases
Solution Approach 1:
The partition member transitions from a rigid structure to an elastic material with appropriate mechanical properties. This parameter change in material stiffness allows the partition member to be easily inserted and assembled into the passage while maintaining sufficient mechanical strength to withstand cooling medium flow pressure. The elastic material provides both ease of assembly and structural integrity.
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
Enhances cooling efficiency by directing the cooling medium through a longer channel, preventing retention and deterioration, while facilitating assembly and maintaining mechanical strength through elastic and hard material combinations.
Implementation Method 1
The partition member is at least partially configured of an elastic material, and abuts on an inner surface of the ring-like passage
Data Source
AI summary
The rotary electric machine includes a stator, a passage, an inlet opening, an outlet opening, and a partition. The stator has an outer periphery. The passage is provided around the outer periphery. A cooling medium is to flow through the passage. The inlet opening is connected to the passage. The cooling medium is to be supplied to the passage via the inlet opening. The outlet opening is connected to the passage. The cooling medium is to be discharged from the passage via the outlet opening. The inlet opening and the outlet opening divide the passage into a longer passage and a shorter passage shorter than the longer passage. The partition is provided in the shorter passage and comprises an elastic material to contact with an inner surface of the shorter passage so as to restrict a flow of the cooling medium.