Wavelength Conversion Module Flow Guide Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current heat dissipation designs for phosphor wheels in solid-state laser projectors are inefficient, leading to reduced conversion efficiency and increased noise due to high wind resistance, and require higher motor power and increased space with dual-disc technology.
Innovation Solution
A wavelength conversion module with a driving element, a wavelength conversion wheel, and flow guides that form airflow channels, allowing for increased airflow velocity and heat transfer efficiency without contacting the rotary disc or driving element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If concave-convex structure or fins are added to the phosphor wheel to enhance heat dissipation, then heat dissipation efficiency is improved, but wind resistance increases significantly causing noise
Solution Approach 1:
The patent introduces a flow guide as an intermediary component between the phosphor wheel and the airflow. The flow guide directs airflow along the rotational direction of the phosphor wheel, creating a guided flow field that enhances heat dissipation without requiring direct contact between the airflow and the phosphor wheel surface, thus reducing wind resistance and noise
Solution Approach 2:
The patent utilizes airflow as a fluid medium to achieve heat dissipation. By controlling the airflow direction and velocity through the flow guide, the system efficiently removes heat from the phosphor wheel without mechanical contact, avoiding the noise and wind resistance problems associated with traditional fin structures
2Temperature
If dual-disc technology with cover and airflow channel is adopted, then heat dissipation is improved, but motor power demand and space requirements increase
Solution Approach 1:
The patent extracts the essential function of the dual-disc system (guiding airflow for heat dissipation) and implements it through a simplified single flow guide component. This eliminates the need for a second rotating disc and cover, reducing motor power demand and space requirements while maintaining effective heat dissipation
Solution Approach 2:
Instead of forcing airflow through a complex dual-disc structure with covers, the patent inverts the approach by allowing airflow to naturally follow the rotational direction of the phosphor wheel, guided by the flow guide. This simplified approach reduces device complexity while achieving the same heat dissipation effect
3Temperature
If dual-disc technology with cover is implemented, then heat dissipation capability is enhanced, but overall weight increases greatly
Solution Approach 1:
The patent removes the heavy cover component from the dual-disc system, retaining only the essential flow guide function. This significantly reduces the overall weight while maintaining the heat dissipation capability through the streamlined flow guide design
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
Enhances heat dissipation efficiency and projection quality, improving product competitiveness by concentrating airflow and reducing noise and power consumption.
Implementation Method 1
at least one airflow channel is formed between the flow guide and the wavelength conversion wheel... When the wavelength conversion wheel rotates, a relative movement between the wavelength conversion wheel and the flow guide occurs
Implementation Method 2
the light conversion area of the phosphor wheel is equipped with a phosphor layer that can be excited to emit yellow light
Data Source
AI summary
A wavelength conversion module includes a driving element, a wavelength conversion wheel, and at least one flow guide. The wavelength conversion wheel includes a rotary disc and at least one wavelength conversion layer. The driving element is connected to the rotary disc to drive the wavelength conversion wheel to rotate along an axis of the driving element as a central axis. The flow guide is disposed beside the wavelength conversion wheel at intervals along the axis, and at least one airflow channel is formed between the flow guide and the wavelength conversion wheel. The flow guide and the driving element are disposed at intervals, and the flow guide does not contact the rotary disc and the driving element. An orthographic projection of the flow guide on the rotary disc overlaps the wavelength conversion layer. When the wavelength conversion wheel rotates, the wavelength conversion wheel and the flow guide move relatively.