Air-Cooled Electric Machine with Integrated Electronics Enclosure
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Solution Overview
Problem
Electric machines, such as motors and electronic controls, generate heat that can lead to reduced efficiency and shorter lifespan due to inadequate cooling systems, with current solutions being costly and aesthetically unpleasing, and exposing the machines to the environment.
Innovation Solution
An electric machine design featuring a motor housing and an electronics enclosure with defined air passages and intakes, coupled with a fan to facilitate airflow and prevent heat transfer between components, while being economically manufactured and aesthetically integrated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic controls are enclosed to protect them from the environment, then reliability is improved, but heat is trapped reducing efficiency and useful life
Solution Approach 1:
The patent employs an enclosed electronics housing with integrated air passages that allow thermal management while maintaining environmental protection. The housing acts as a flexible barrier that can be configured with openings and channels to facilitate heat dissipation without compromising the sealed enclosure's protective function.
2Ease of manufacture
If electronic controls are located on an end of the motor housing, then assembly is simplified, but providing a cooling fan for the motor is inhibited
Solution Approach 1:
The patent resolves the spatial conflict by utilizing the air passage volume within the electronics housing itself as the cooling fan mounting location. This dimensional reconfiguration allows the fan to be positioned inside the enclosed space rather than requiring external end-plate mounting, thereby maintaining both assembly simplicity and effective cooling capability.
3Temperature
If open fan inlets are used in cooling systems, then cooling effectiveness is improved, but the electric machine is exposed to the environment
Solution Approach 1:
The patent employs enclosed air passages within the housing structure that guide cooling airflow from intake openings through the motor and electronics compartments. This approach maintains effective cooling by directing air flow through controlled pathways while the housing shell protects internal components from direct environmental exposure.
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
The solution effectively cools electric machine components, extends their lifespan, and reduces noise and environmental exposure, while being cost-effective and aesthetically pleasing.
Implementation Method 1
a fan configured to draw air through the at least one air intake and into the air passage
Implementation Method 2
The air passage extends from the at least one air intake into the motor housing
Data Source
AI summary
An electric machine comprises a motor housing and an electronics enclosure coupled to the motor housing. The electronics enclosure defines an air passage between the electronics enclosure and the motor housing. The electronics enclosure further defines at least one air intake connected to said air passage. The electric machine also includes a fan configured to draw air through the at least one air intake and into the air passage.