Projecting Apparatus Perpendicular Airflow Heat Dissipation
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Solution Overview
Problem
Conventional projecting apparatuses face issues with heat dissipation efficiency due to air flow turbulence and noise caused by converging air flows, which leads to reduced air flow rates and non-uniform cooling distributions.
Innovation Solution
The projecting apparatus is designed with a chassis configuration that includes separate and perpendicular air flow paths for the first and second fan sets, with strategically positioned air inlets and outlets, heat sinks, and a power supply to prevent air flow convergence, ensuring that air flows do not have a rotational property and are easily controlled, thereby enhancing heat dissipation efficiency and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If two air flows having rotational property converge in front of the air outlets, then the air flows form turbulence, but this causes flow resistance that hinders air flow, decreases air flow rate and increases noise
Solution Approach 1:
The patent divides the single air outlet into two separate air outlets (first air outlet and second air outlet) positioned at different locations on the chassis. The first fan set discharges air through the first air outlet while the second fan set discharges air through the second air outlet. This segmentation prevents the rotational air flows from converging and creating turbulence, thereby maintaining stable air flow paths and improving overall air flow rate while reducing noise.
2Ease of operation
If additional air guiding design is added to control air flow direction, then air flow distribution becomes more uniform, but device complexity increases
Solution Approach 1:
Instead of adding complex air guiding structures within the single outlet path, the patent resolves air flow control by transitioning to a different spatial dimension - using multiple air outlets positioned at different locations and orientations on the chassis. This dimensional approach allows each fan set to discharge air in its own direction without interference, achieving uniform and controllable air flow distribution while avoiding the need for additional air guiding components.
3Temperature
If cold air cools the light source heat sinks first, then the air is heated before reaching the power supply, but this limits the cooling effect on the power supply
Solution Approach 1:
The patent implements separate air cooling paths by dividing the cooling system into two independent circuits: one circuit with the first fan set that draws air through the first air inlet and discharges through the first air outlet, and another circuit with the second fan set that draws air through the second air inlet and discharges through the second air outlet. This allows different regions of the chassis (including areas with light source heat sinks and power supply) to receive targeted cooling airflow, ensuring that the power supply receives adequate cooling without being limited by pre-heated air from upstream components.
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 design improves air flow rates and reduces noise by ensuring perpendicular and separate flow directions, resulting in effective heat dissipation for the projecting apparatus's components.
Implementation Method 1
the first fan set is configured to drive air to flow via the first air inlet into the chassis to form a first air flow, and the first air flow flows out of the chassis via the first air outlet. The second fan set is configured to drive air to flow via the first air inlet into the chassis to form a second air flow, and the second air flow flows out of the chassis via the second air outlet
Data Source
AI summary
A projecting apparatus includes a chassis, an optical engine, a first fan set and a second fan set. The first fan set is disposed in the chassis and located at a first air outlet, and is configured to drive air to flow via a first air inlet into the chassis to form a first air flow. The first air flow flows out of the chassis via the first air outlet. The second fan set is disposed in the chassis and located at a second air outlet, and is configured to drive air to flow via the first air inlet into the chassis to form a second air flow. The second air flow flows out of the chassis via the second air outlet. A flow direction of the first air flow at the first air outlet is perpendicular to that of the second air flow at the second air outlet.