Color Wheel Module with Flow Detour Duct for Dust and Heat Management
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Solution Overview
Problem
Existing digital light processing projection apparatuses face issues with dust deposition and overheating on the color wheel and light sensor, leading to reduced brightness and operational failures.
Innovation Solution
A color wheel module with a cover and flow detour duct is introduced, where airflow is directed through the duct to prevent dust attachment and facilitate heat dissipation, reducing the likelihood of dust accumulation and overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the color wheel and light sensor are exposed in an open environment, then the structure is simple and easy to manufacture, but dust is easily deposited on the color wheel and light sensor, decreasing brightness and affecting normal operation
Solution Approach 1:
A cover structure is introduced to enclose the color wheel and light sensor, forming a protected internal environment. The cover acts as a physical barrier that prevents dust from reaching the color wheel and light sensor while allowing the system to maintain its functional simplicity and ease of manufacture.
2Temperature
If the color wheel is exposed in an open environment, then heat dissipation is straightforward, but the motor overheats and adhesive melts, causing projection apparatus failure
Solution Approach 1:
An airflow duct is introduced to create a controlled airflow path that passes through the cover's opening. This pneumatic system directs cool air to the color wheel and motor for heat dissipation while preventing dust from entering through the same airflow path, thus maintaining both temperature control and dust protection.
3Object-affected harmful factors
If a cover is added to protect the color wheel, then dustproof performance improves, but the device complexity increases
Solution Approach 1:
The cover is designed with a segmented structure that includes a body portion and a separately positioned opening. This segmentation allows the cover to provide comprehensive dust protection while maintaining a simple, modular design that is easy to manufacture and assemble, thus minimizing the increase in device complexity.
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 solution effectively prevents dust from reaching the color wheel, maintains system luminance, and enhances heat dissipation, resulting in improved reliability and performance of the projection apparatus.
Implementation Method 1
The color wheel is configured to drive airflow so that the airflow enters the flow detour duct from the airflow inlet, then flows through the color wheel and is discharged from the airflow outlet
Data Source
AI summary
A color wheel module and a projection apparatus are provided, wherein the color wheel module includes a color wheel, a cover and a flow detour duct. The cover shades the color wheel. The flow detour duct is communicated with the cover and has an airflow inlet and an airflow outlet. The rotating color wheel is configured to drive airflow into the flow detour duct from the airflow inlet, and cause the airflow through the color wheel and then discharged from the airflow outlet.