Wavelength Conversion Module Heat Dissipation Airflow Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laser projectors face heat dissipation challenges due to the high temperature of phosphor wheels, leading to decreased optical efficiency and projector brightness, as existing heat dissipation methods are inadequate in managing the thermal issues within the wavelength conversion devices.
Innovation Solution
A wavelength conversion module with a heat dissipation airflow providing device that directs airflow uniformly to the side surface of the wavelength conversion device, utilizing a centrifugal fan or axial fan to create a heat dissipation airflow that effectively transfers heat energy through a structured cavity, ensuring efficient heat dissipation by positioning the airflow outlet close to the center of the side surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a phosphor wheel is used in a laser projector to generate light with different colors, then the projector can achieve multi-color light output, but the temperature of the phosphor wheel rises causing overheating of the coating glue and decreased optical efficiency
Solution Approach 1:
The patent introduces a heat dissipation airflow providing device that directs airflow from a different spatial dimension (side surface direction) onto the phosphor wheel, rather than relying solely on conventional heat dissipation paths. This dimensional approach to heat management allows effective cooling while maintaining the phosphor wheel's light-generating function
Solution Approach 2:
The patent uses air flow as an intermediary medium to transfer heat away from the phosphor wheel. The heat dissipation airflow providing device generates controlled air flow that acts as a thermal mediator, carrying heat energy from the phosphor wheel surface to surrounding areas, thus preventing overheating while preserving optical efficiency
2Ease of manufacture
If the heat dissipation airflow outlet is positioned far from the center of the side surface, then the structure allows easier manufacturing, but the heat dissipation uniformity deteriorates
Solution Approach 1:
The patent specifies that the outlet's orthogonal projection on the side surface should be positioned within a specific distance range from the geometry center of the side surface. This localized positioning requirement ensures that heat dissipation airflow is distributed uniformly across the phosphor wheel surface, maintaining consistent cooling effectiveness without compromising manufacturing feasibility
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 ensures uniform heat dissipation around the wavelength conversion device, enhancing the thermal management and maintaining the optical efficiency and brightness of the projector by effectively transferring heat energy away from the phosphor wheel.
Implementation Method 1
the heat dissipation airflow providing device is adapted to provide a heat dissipation airflow to the side surface from the outlet
Data Source
AI summary
A wavelength conversion module, includes a wavelength conversion device and at least one heat dissipation airflow providing device. The wavelength conversion device has at least one side surface. The heat dissipation airflow providing device has an outlet, wherein the outlet faces the side surface, and the heat dissipation airflow providing device is adapted to provide a heat dissipation airflow to the side surface from the outlet. A distance between a geometry center of an orthogonal projection of the outlet on the side surface and a geometry center of the side surface is smaller than or equal to half of a maximum inner diameter of the outlet. In addition, a projector having the wavelength conversion module is also provided.