Outer Rotor Motor with Integrated Blade Cooling to Reduce Part Count
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Solution Overview
Problem
Existing outer rotor motors for large air conditioners have a complex fastening structure and a large number of parts, including cooling wheels, fans, and flow guides, which increases size and complexity.
Innovation Solution
The design incorporates a frame with a stator, a coil, a rotating shaft, a cover with protruding blades or ribs, and a magnet, eliminating the need for separate cooling components by enhancing heat dissipation through the cover's internal structure, thereby simplifying the fastening structure and reducing the number of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling wheels, cooling fans, and flow guides are added for heat dissipation, then heat dissipation performance is improved, but device complexity and part count increase
Solution Approach 1:
The patent merges the heat dissipation function into the cover structure by adding blades directly to the cover that surrounds the rotor. This integration eliminates the need for separate cooling wheels, cooling fans, and flow guides, thereby reducing part count and simplifying the fastening structure while maintaining effective heat dissipation from the motor components.
Solution Approach 2:
The cover is designed to serve multiple functions: it provides structural enclosure for the rotor while simultaneously acting as a heat dissipation component through its integrated blades. This multi-functionality eliminates the need for dedicated separate cooling components, reducing overall device complexity.
2Temperature
If cooling wheels, cooling fans, and flow guides are added for heat dissipation, then heat dissipation performance is improved, but product size increases
Solution Approach 1:
The heat dissipation function is merged into the existing cover structure through integrated blades, eliminating the need for separate cooling components that would occupy additional space. This integration allows effective heat dissipation within the existing motor footprint without increasing overall product size.
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
This design reduces the size and part count of the outer rotor motor while improving heat dissipation performance, minimizing the influence on the magnetic field and reducing output losses by optimizing fluid flow and heat transfer.
Implementation Method 1
a stator having a coil wound therein is installed, and a rotor is disposed on the outside of the stator as if a magnet surrounds the coil of the stator
Implementation Method 2
an inner surface of the cover may include a plurality of blades protruding inward and extending in a radial direction... increase the heat dissipation effect
Data Source
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AI summary
An outer rotor motor is provided. The outer rotor motor according to an aspect of the present disclosure may comprise a frame, a stator disposed on the frame, a coil wound around the stator, a rotating shaft rotatably coupled to a central region of the frame, a cover coupled to the rotating shaft and surrounding the stator, and a magnet disposed on the cover and facing the stator. In this case, an inner surface of the cover includes a plurality of blades protruding inward and extending in a radial direction.