Nested Fan Heat Dissipation Module for Projection Apparatus
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Solution Overview
Problem
Existing heat dissipation modules in projection apparatuses face challenges in efficiently transferring heat while minimizing noise, especially in compact designs where fan size is limited.
Innovation Solution
A heat dissipation module comprising an airflow generator, a heat dissipation substrate, a heat dissipation member with fins, a baffle, and a heat conductive member, which allows ambient air to flow through the module, entering the airflow generator, and then through airflow channels in the heat dissipation member, effectively dissipating heat and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the projection apparatus is made compact with reduced size, then portability is improved, but heat dissipation efficiency deteriorates and noise increases
Solution Approach 1:
The airflow generator is nested within the accommodation space formed by the heat dissipation member's fins, allowing the fan to be positioned inside the heat dissipation structure rather than alongside it. This nested arrangement maximizes space utilization in the compact projection apparatus while maintaining effective heat dissipation pathways.
Solution Approach 2:
The heat dissipation member employs a three-dimensional fin structure with airflow channels extending in multiple directions. The airflow generator rotates to create multidirectional airflow that passes through the fins from different angles, effectively utilizing spatial dimensions to enhance heat dissipation surface area within a compact volume.
2Volume of moving object
If the fan size is reduced to fit compact design, then device size is improved, but noise level increases
Solution Approach 1:
The airflow generator employs rotatable blades that dynamically adjust airflow direction and distribution. The rotation mechanism allows the fan to optimize its operating characteristics, maintaining effective cooling while reducing turbulence-induced noise compared to static fan designs.
Solution Approach 2:
The heat dissipation member with its fin structure and airflow channels acts as an intermediary between the heat source and the airflow generator. This intermediate structure distributes and guides airflow smoothly, reducing direct interaction between the fan blades and ambient air that would otherwise generate noise.
3Temperature
If heat dissipation surface area is increased, then heat transfer efficiency is improved, but device complexity increases
Solution Approach 1:
The heat dissipation member serves multiple functions simultaneously: it provides the heat dissipation surface through its fin structure, creates airflow channels to guide cooling air, and forms the accommodation space that houses the airflow generator. This multi-functionality increases heat transfer efficiency without proportionally increasing structural complexity.
Solution Approach 2:
The patent merges the heat dissipation fins and airflow channel structure into a single integrated heat dissipation member. By combining these functions into one component rather than separate elements, the design achieves high heat transfer efficiency while minimizing the number of parts and assembly complexity.
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 proposed heat dissipation module achieves effective heat dissipation and reduces noise by allowing larger fan blades and optimizing airflow paths, resulting in a 2 dB(A) noise reduction compared to conventional systems while maintaining component temperatures within appropriate ranges.
Implementation Method 1
The heat conductive member is connected between the heat dissipation substrate and the heat dissipation member to transfer thermal energy of the heat source from the heat dissipation substrate to the heat dissipation member
Implementation Method 2
ambient air outside the housing of the projection apparatus is allowed to flow into the housing through the air inlet, enter the air inlet surface of the airflow generator from the opening of the baffle, then enter the airflow channels of the heat dissipation member from the airflow generator, and flow out of the housing from the air outlet
Implementation Method 3
The plurality of first fins and the main body form an accommodation space. The airflow generator has a rotation axis, and is accommodated in the accommodation space and connected to the main body
Data Source
AI summary
A heat dissipation module includes an airflow generator, a heat dissipation substrate connected to a heat source, a heat dissipation member, a baffle, and a heat conductive member connected to the heat dissipation substrate. The heat dissipation member includes a main body and first fins arranged around an outer periphery of the main body and forming an accommodation space with the main body. The airflow generator has a rotation axis, and is accommodated in the accommodation space and connected to the main body. The baffle is connected to the first fins and has an opening corresponded to an air inlet surface of the airflow generator. On a reference plane perpendicular to the rotation axis, at least a part of an orthographic projection of each first fin does not overlap an orthographic projection of the airflow generator, and an orthographic projection of the baffle overlaps the orthographic projections of the first fins.