Projection Cooling Structure Using Segmented Blowers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional projection apparatuses face inefficiencies in cooling, particularly with increased energy consumption for high brightness images, leading to ineffective temperature reduction and associated noise and size issues with higher fan speeds or larger fans.
Innovation Solution
The use of multiple blowers and an axial fan strategically positioned to increase air flow around the light source, with exhaust ports facing the light source and surrounding areas to enhance heat dissipation, and the addition of a second blower for forced air convection to improve cooling efficiency without increasing fan speed or size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the axial fan speed is increased or a larger axial fan is used to elevate cooling efficiency, then the cooling effect is improved, but noise increases and device dimensions increase
Solution Approach 1:
The patent divides the cooling function into multiple independent blowers (first blower, second blower, third blower) positioned at different locations, each responsible for cooling specific heat-generating components. This segmentation allows effective cooling without requiring a single high-speed fan that would generate excessive noise.
Solution Approach 2:
The patent introduces air guides as intermediary components that direct airflow from the blowers to specific target areas. These air guides efficiently channel cooling air to heat-generating components, improving cooling effectiveness without increasing fan speed or noise.
2Temperature
If the axial fan speed is increased or a larger axial fan is used to elevate cooling efficiency, then the cooling effect is improved, but device dimensions increase
Solution Approach 1:
The cooling system is segmented into multiple compact blowers distributed throughout the device, each handling a specific cooling zone. This approach achieves effective cooling without requiring a single large axial fan, thereby maintaining compact device dimensions.
Solution Approach 2:
The patent utilizes three-dimensional spatial distribution of multiple blowers and air guides to optimize cooling coverage. By strategically positioning cooling components in different spatial locations, the system achieves comprehensive cooling without increasing overall device volume.
3Illumination intensity
If power supply is increased to elevate illumination brightness, then image brightness is improved, but heat generated from light source and power supply increases
Solution Approach 1:
The patent implements separate cooling paths for different heat-generating components: one cooling path for the light source and another for the power supply. This segmented cooling approach effectively manages heat from high-power illumination without compromising brightness performance.
Solution Approach 2:
Air guides serve as intermediaries to efficiently direct cooling airflow from blowers to heat-generating components. This ensures that heat from high-power light sources and power supplies is effectively removed, enabling sustained high brightness operation.
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 configuration effectively expels heat from the light source, reducing internal temperatures and avoiding noise and size issues, while meeting safety regulations without the need for higher fan speeds or larger axial fans.
Implementation Method 1
a first blower 250 and an axial fan 270, in which the first blower 250 and the axial fan 270 are used to force air flow in a light source area
Implementation Method 2
a second blower 260 for forced air convection to improve cooling efficiency
Implementation Method 3
This configuration effectively expels heat from the light source, reducing internal temperatures
Data Source
AI summary
A projection apparatus comprises a housing and further comprises a light source, an imaging system, an optical engine, a first blower, and an axial fan installed in the housing, and an air outlet is disposed on the housing. The light source is installed adjacent to the air outlet. The optical engine is installed between the imaging system and the light source. The first blower is installed at one end far away from the air outlet, and an exhaust port of the first blower faces one portion of the light source. The axial fan is installed at one side of the light source installed the first blower, and the light source is positioned between the air outlet and the axial fan. An exhaust port of the axial fan faces the light source, and a suction port of the axial fan is adjacent to the suction port of the first blower.