Projection Cooling Device Single Fan Airflow Segmentation
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Solution Overview
Problem
Conventional cooling devices for projection apparatuses require multiple fans to effectively dissipate heat from light sources of different colors, leading to increased cost, space usage, and noise, as a single fan struggles to manage varying heat generation and operating temperatures of LEDs.
Innovation Solution
A cooling device with an airflow guiding device and a single fan that divides airflow into multiple paths, allowing for efficient heat dissipation of multiple light sources by adjusting the airflow division based on the heat dissipation requirements of each source, using a U-shaped airflow guiding tube and strategically placing air vents to optimize airflow distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If multiple fans are used to cool LEDs of different colors, then the heat dissipation requirement is satisfied, but the cost increases and the device occupies more space
Solution Approach 1:
The patent divides the cooling system into multiple flow paths (first flow path for green LED, second flow path for blue and red LEDs) within a single fan structure. The airflow guiding device segments the airflow from one fan into directed streams that reach different LED modules, allowing differentiated cooling for each color LED while using only one fan component
Solution Approach 2:
The patent implements local quality by providing customized airflow to different LED positions based on their specific heat dissipation needs. The airflow guiding device directs stronger or cooler airflow to the green LED (which generates more heat) while providing appropriate airflow to blue and red LEDs, optimizing cooling efficiency for each location rather than using uniform cooling
2Temperature
If multiple fans are used to cool LEDs of different colors, then the heat dissipation requirement is satisfied, but the noise increases
Solution Approach 1:
The patent merges the cooling function for multiple LED colors into a single fan unit. By integrating multiple flow paths within one fan structure, the system achieves the cooling effect that would otherwise require multiple fans, thereby reducing the total noise generated by fewer rotating components while still providing targeted cooling for each LED type
3Device complexity
If a single fan is used to cool all LEDs, then the device complexity is reduced, but the heat dissipation requirement cannot be satisfied
Solution Approach 1:
The patent introduces an airflow guiding device as an intermediary component between the single fan and the multiple LED modules. This intermediary structure receives airflow from the fan and redistributes it through multiple flow paths to different LED positions, enabling one fan to effectively cool multiple LEDs with different heat dissipation requirements without requiring direct connection between each fan and LED
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 allows for effective heat dissipation of multiple light sources using the least number of fans, reducing noise and improving the quality of the projection apparatus by customizing airflow distribution according to the specific heat generation needs of each LED module.
Implementation Method 1
The fan is adapted to generate an airflow. The airflow is divided into a first airflow and a second airflow while the airflow enters the first flow path and the second flow path of the airflow guiding device respectively.
Implementation Method 2
The first airflow flows through the first position of the first flow path, while the second airflow flows through the second position and the third position of the second flow path in this order. In this way, the cooling device is adapted to assist in dissipating heat generated by the first light source, the second light source and the third light source respectively
Data Source
AI summary
A cooling device applied in a projection apparatus and the projection apparatus are provided. The projection apparatus comprises a first light source, a second light source, a third light source and the cooling device. The cooling device comprises an airflow guiding device and a fan. The airflow guiding device is adapted to define a first flow path and a second flow path. The first flow path has a first position, while the second flow path has a second position and a third position, correspondingly disposed with the first light source, the second light source and the third light source, respectively. The fan is adapted to generate airflow. The airflow is divided into a first airflow and a second airflow entering the first flow path and the second flow path, respectively. Thereby, the cooling device is capable of matching the heat dissipation requirements of the light sources and reducing the noise generated by the cooling device by using only one fan.