Phosphor Wheel Thermal Management via Intermediary Element
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Solution Overview
Problem
The heat generated by the phosphor layer in projection apparatuses can damage or reduce the life of the driving motor in the phosphor wheel due to heat conduction.
Innovation Solution
Incorporating a temperature interference element, such as a heat insulating or dissipating element, between the driving motor and the substrate to block or dissipate heat generated by the light wavelength converting layer, which includes a spoiler and adhesive layers for enhanced heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the phosphor layer is irradiated by the laser to generate sufficient fluorescence intensity output, then the output brightness is improved, but heat is generated that can damage the driving motor
Solution Approach 1:
A temperature interference element is introduced as an intermediary component between the phosphor layer and the driving motor. This element acts as a thermal barrier that blocks heat conduction from the phosphor layer to the motor, while allowing the system to maintain high fluorescence output brightness
Solution Approach 2:
The phosphor wheel structure is segmented into distinct functional layers: the phosphor layer for light conversion, the temperature interference element for thermal isolation, and the driving motor for rotation. This segmentation allows each component to perform its function independently without harmful interactions
2Illumination intensity
If the phosphor layer is used to convert laser light into fluorescence, then sufficient output brightness is achieved, but heat conduction to the driving motor causes damage or reduced life
Solution Approach 1:
The temperature interference element serves as a thermal mediator that protects the driving motor from heat generated during phosphor conversion processes, thereby extending motor lifespan while maintaining fluorescence output
Solution Approach 2:
The heat generated by the phosphor layer, which would normally be harmful to the motor, is managed through the temperature interference element that converts this thermal energy into a controlled factor, allowing the system to operate continuously without motor damage
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 solution effectively reduces the impact of heat on the driving motor, preventing damage and extending its lifespan by blocking or dissipating heat effectively.
Implementation Method 1
the light wavelength converting layer is for converting an exciting beam incident on the light wavelength converting layer into a converted beam
Implementation Method 2
the temperature interference element is for blocking or dissipating heat generated by the light wavelength converting layer
Data Source
AI summary
A phosphor wheel and a projection apparatus with the phosphor wheel are disclosed. A phosphor wheel includes a driving motor, a temperature interference element, a substrate and at least one light wavelength converting layer. The driving motor includes a motor body and a rotating member. The motor body drives the rotating member to rotate relative to the motor body along a rotation axis. The temperature interference element is connected with the rotating member and the substrate. The motor body drives the rotating member to rotate the temperature interference element and the substrate relative to the motor body. The substrate includes a first surface and a second surface disposed opposite to each other. The second surface is located between the first surface and the rotating member. The light wavelength converting layer is disposed on the first surface of the substrate.