Split Fan Motor Structure for Heat Dissipation and Easy Maintenance
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Solution Overview
Problem
Existing motors and fans face issues with high temperature rise due to poor heat dissipation, leading to reduced service life, efficiency, and torque, along with challenges in disassembly and maintenance.
Innovation Solution
A motor design featuring a casing with air guide plates and heat dissipation holes, a split structure, and a rotating shaft supported by bearings for improved concentricity, combined with a fan blade configuration that enhances airflow for effective heat dissipation and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high electromagnetic load materials are used to increase power density, then motor power increases, but temperature rise increases and service life decreases
Solution Approach 1:
The motor structure is divided into modular components including stator, rotor, end covers, and bearing components that can be separately manufactured and assembled. This segmentation allows for optimized heat dissipation paths and easier maintenance while maintaining high power density through efficient material utilization in each module.
Solution Approach 2:
Heat dissipation fins are introduced as intermediary structures between the motor components and the surrounding environment. These fins act as thermal mediators that increase the surface area for heat transfer, effectively managing the temperature rise generated by high electromagnetic load materials without reducing motor power.
2Ease of manufacture
If integrated motor-fan structure is used, then manufacturing is simplified, but disassembly and maintenance become difficult
Solution Approach 1:
The motor-fan system is designed with clear segmentation into motor components (stator, rotor, end covers) and fan components (fan wheel, motor housing), connected through standardized interfaces. This allows the motor and fan to be manufactured separately and assembled together, facilitating both manufacturing efficiency and subsequent disassembly for maintenance.
Solution Approach 2:
The connection between motor and fan components uses detachable fastening mechanisms rather than permanent bonds. This dynamic connection allows the system to maintain structural integrity during operation while enabling easy disassembly when maintenance is required, balancing manufacturing simplicity with repairability.
3Device complexity
If conventional motor structure is used, then design is simple, but heat dissipation effect is poor
Solution Approach 1:
The heat dissipation design transitions from two-dimensional surface cooling to three-dimensional volumetric heat management. Heat dissipation fins are arranged in multiple dimensions around the motor components, creating efficient heat transfer pathways in radial, axial, and circumferential directions while maintaining relatively simple overall structure.
Solution Approach 2:
The motor housing and end covers incorporate finned structures that create a porous-like thermal field, allowing heat to dissipate through multiple pathways rather than a single surface. This increases effective heat transfer area without significantly increasing structural complexity.
4Volume of moving object
If high power density materials are used, then motor size is reduced, but local temperature rise increases
Solution Approach 1:
Different regions of the motor are equipped with tailored heat dissipation solutions based on their specific thermal characteristics. High-density winding areas receive enhanced cooling through strategically placed heat dissipation fins and optimized airflow paths, while maintaining compact overall dimensions. Each component's heat dissipation features are customized to its local thermal load.
Solution Approach 2:
The compact motor design incorporates multi-dimensional heat dissipation pathways that extend heat transfer beyond the immediate local area. Thermal conduction paths are created through the motor housing and end covers to distribute heat laterally, while convection paths are optimized in the radial and axial directions, effectively managing local temperature rises in a compact volume.
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 achieves good heat dissipation, prolongs motor service life, facilitates convenient assembly and maintenance, ensures stable rotation, and improves efficiency and concentricity, resulting in a compact, high-performance motor and fan system.
Implementation Method 1
the inner wall of the sleeve, the outer wall of the inner core and the two adjacent air guide plates are surrounded by an air guide channel
Implementation Method 2
the inner core is provided with a plurality of heat dissipation holes, and the plurality of heat dissipation holes are arranged in an annular array around the central axis of the inner core
Implementation Method 3
a bearing is installed in the mounting hole, the rotating shaft is installed on the inner ring of the bearing and penetrates the bearing
Data Source
AI summary
A motor, comprising casing, rotating shaft, magnetic ring, three-phase hollow cup coil winding and insulating end cover, is provided. The casing comprises sleeve and inner core arranged coaxially with sleeve and air guide plates connected to sleeve and inner core, the sleeve, inner core and two adjacent air guide plates are surrounded to form air guide channel, inner core is provided with mounting hole, bearing is installed in mounting hole, and rotating shaft passes through bearing, magnetic ring is sleeved outside one end of rotating shaft, three-phase hollow cup coil winding is sleeved outside the magnetic ring. Rotating gap is set between three-phase hollow cup coil winding and magnetic ring, and insulating end cover is installed on the outlet of sleeve. Wind end fixes the three-phase hollow cup coil winding in sleeve, inner core is provided with heat dissipation holes that are all connected with mounting holes.