Rotor Vent Structure for Stator Cooling in Aircraft Motors
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Solution Overview
Problem
Conventional motors face challenges in effectively dissipating heat, particularly at the fixed portion of the stator, due to insufficient airflow caused by a non-rotating base.
Innovation Solution
The motor design includes a rotor with a cylindrical portion, first and second plate portions, and holes that promote airflow on both axial sides of the stator, enhancing heat dissipation through rotational air circulation and ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the base is made fixed to support the stator, then structural stability is improved, but air flow circulation is insufficient leading to poor heat dissipation
Solution Approach 1:
The invention introduces dynamic air flow elements (rotating rotor with holes) into the system while maintaining the static base structure. The rotating rotor lid body with multiple holes creates dynamic air circulation paths that actively transport heat away from both the rotor and stator, allowing the base to remain stable while heat dissipation becomes dynamic and efficient.
Solution Approach 2:
The air flow acts as an intermediary medium between the heat-generating components (rotor and stator) and the external environment. By optimizing the air flow paths through multiple holes in the rotor lid body, the system uses this intermediary to efficiently remove heat from both the rotating and fixed portions without requiring the base itself to rotate.
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 design improves heat dissipation performance by ensuring airflow on both axial ends of the stator, suppressing temperature rise and enhancing ventilation efficiency between the rotor and stator.
Implementation Method 1
the flow of air inside the motor is promoted
Implementation Method 2
the flow of air inside the motor is promoted
Data Source
AI summary
A motor includes a rotor and a stator. The rotor can rotate about a central axis extending in an axial direction. The stator includes a stator core having an annular shape surrounding the central axis. The rotor includes a cylindrical portion, a first plate portion, a second plate portion, and a hole. The cylindrical portion is arranged on a radially outer side with respect to the stator and extends in the axial direction. The first plate portion is arranged on a first axial side with respect to the stator, and expands radially inward from a first axial end of the cylindrical portion. The second plate portion is arranged on a second axial side with respect to the stator, and expands radially inward from a second axial end of the cylindrical portion. The hole penetrates at least one of the cylindrical portion, the first plate portion, and the second plate portion.