Single Axial-Flow Fan Projector Cooling Design
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Solution Overview
Problem
Conventional projectors with multiple cooling fans face space constraints and increased costs due to overcrowded interior spaces and complex cooling fan arrangements.
Innovation Solution
A projector design utilizing a single axial-flow fan to dissipate heat from both the light source and other elements, with strategically positioned air inlets and outlets, and optional partitions to enhance airflow and reduce internal complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If multiple cooling fans are used to dissipate heat from the light source and other elements, then the heat dissipation effectiveness is improved, but the device complexity and cost increase
Solution Approach 1:
The patent merges the cooling functions for the light source and other heat-generating elements into a single cooling fan system. The airflow path is designed to sequentially pass through the light source and then other heat-generating elements, allowing one fan to perform what traditionally required multiple fans, thereby reducing device complexity while maintaining heat dissipation effectiveness
Solution Approach 2:
The single cooling fan is designed to serve multiple cooling purposes simultaneously - it cools both the light source and other heat-generating elements within the projector. This multi-functional approach eliminates the need for separate cooling fans for different components, reducing overall system complexity
2Temperature
If multiple cooling fans are disposed in the projector, then the heat dissipation capability is improved, but the interior space becomes overcrowded
Solution Approach 1:
By combining multiple cooling functions into a single fan, the patent reduces the number of components occupying interior space. The unified cooling system requires less overall volume compared to multiple separate fans, thereby increasing the available interior space for other projector elements
Solution Approach 2:
The patent optimizes the airflow path to efficiently utilize three-dimensional space within the projector housing. The airflow sequentially passes through different heat-generating components in a compact arrangement, maximizing heat dissipation capability while minimizing the space required for the cooling system
3Temperature
If multiple cooling fans are used, then the heat dissipation from multiple sources is improved, but the manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing cost by specifying a single cooling fan instead of multiple fans. This reduction in component count directly lowers material costs, assembly costs, and maintenance costs, while the optimized airflow path ensures that the single fan effectively cools all heat-generating sources
Solution Approach 2:
The single cooling fan is designed with multi-functional capability to cool both the light source and other heat-generating elements. This universality eliminates the need for purchasing and installing multiple specialized cooling fans, thereby reducing overall manufacturing cost while maintaining comprehensive heat dissipation coverage
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 reduces projector costs and enhances design flexibility by effectively dissipating heat from multiple sources using a single fan, improving airflow efficiency and preventing heat recirculation.
Implementation Method 1
When the axial-flow fan is operating, a first airflow is generated. After flowing through the heat source, the first airflow enters the airflow inlet and generates a second airflow. The second airflow, blown out from the airflow outlet, dissipates the heat generated by the light source module
Data Source
AI summary
A projector with single fan including a casing, a heat source, a light source module and an axial-flow fan are provided. The casing has an air outlet and a first air inlet. The heat source, the light source module and the axial-flow fan are disposed in the casing. The light source module includes a lamp shade and a light-emitting part. The axial-flow fan is disposed in a light outgoing side of the light source module and has an airflow inlet and an airflow outlet. When the axial-flow fan is operating, a first airflow is generated. After flowing through the heat source, the first airflow enters the airflow inlet and generates a second airflow. The second airflow, blown out from the airflow outlet, dissipates the heat generated by the light source module and then flows out to the outside of the casing.