Electromagnetic Fan Clutch Heat Isolation via Eddy Current Disc
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Solution Overview
Problem
Electromagnetic fan clutches face stability and service life issues due to heat accumulation from eddy currents, leading to damage of the connecting bearing and blade structure, and increased material and energy consumption in conventional designs.
Innovation Solution
A low-carbon economical electromagnetic fan clutch design featuring an eddy current disc with a radiating area and thermal insulation area, separated from the fan fixing disc, using conductive non-magnetic materials and radiating fins to manage heat, reducing structural weight and enhancing thermal insulation, allowing for efficient heat dissipation and simplified manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the external superficial area of the fan fixing disc is increased to radiate heat, then the heat transmission to bearing is prevented, but the dynamic balance of the fan fixing disc is damaged and blade fixation is broken
Solution Approach 1:
The patent separates the heat generation function (eddy current disc) from the blade mounting function (fan fixing disc) by introducing an independent eddy current disc with dedicated radiating fins. This segmentation allows heat dissipation to occur on the eddy current disc without compromising the dynamic balance and blade fixation of the fan fixing disc.
Solution Approach 2:
The eddy current disc acts as an intermediary component between the electromagnetic field and the fan fixing disc. It absorbs the thermal effects of electromagnetic conversion through eddy currents and radiates heat independently, preventing heat transmission to the bearing and fan fixing disc while maintaining their functional integrity.
2Temperature
If the driving disc is separated from the fan hub to prevent heat transmission, then the bearing is protected from heat, but the fan hub becomes inconvenient to disassemble and assemble
Solution Approach 1:
The patent divides the heat management function into a separate eddy current disc that can be independently removed. This allows the eddy current disc to be detached for maintenance without affecting the fan hub assembly, combining effective heat isolation with ease of maintenance.
3Temperature
If a stepped shaft sleeve is used to separate the driving disc, then heat transmission to bearing is prevented, but the production material cost and energy consumption are increased and yield is reduced
Solution Approach 1:
The patent extracts the heat generation and dissipation function from the fan fixing disc assembly by using an independent eddy current disc with integrated radiating fins. This eliminates the need for additional heat isolation components like stepped shaft sleeves, reducing manufacturing complexity and cost while maintaining effective heat prevention.
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 effectively isolates heat from the fan fixing disc, reduces material and energy consumption, and improves manufacturing efficiency, enabling reliable operation at high speeds with reduced maintenance complexity and environmental impact.
Implementation Method 1
a lot of heat produced by eddy current is accumulated on the soft iron disc
Implementation Method 2
due to the unavoidable thermal effect in an electromagnetic conversion process, a lot of heat is produced
Implementation Method 3
the radiating area is composed of radiating fins or radiating ribs used for connecting the induction area and the thermal insulation area
Implementation Method 4
an air hole corresponding to a position of the radiating area is formed on the fan fixing disc around the spindle
Implementation Method 5
a thermal insulation material is arranged on the thermal insulation area
Data Source
AI summary
A low-carbon economical electromagnetic fan clutch includes a spindle and a fan fixing disc, wherein the low-carbon economical electromagnetic fan clutch further includes an eddy current disc. The fan fixing disc and the eddy current disc are sequentially arranged at a left end of the spindle along an axial direction from left to right; one or multiple groups of permanent magnets are arranged on the fan fixing disc around the spindle, and a conductive non-magnetic-conductive material is fixed at a corresponding position of the eddy current disc; the fan fixing disc is rotationally connected with the spindle through a first bearing, and the eddy current disc is rotationally connected with the spindle through a second bearing. In the low-carbon economical electromagnetic fan clutch, an electromagnetic eddy current high heat accumulation area is effectively separated from the fan fixing disc rotating at a high speed.