Built-in ventilation fan
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Solution Overview
Problem
Existing ventilation fans face a challenge in balancing design requirements with ensuring an air flow path, particularly when a ventilation grille is exposed to the user.
Innovation Solution
A built-in ventilation fan design featuring a casing with a suction port and blow-out port, a louver with an annular light emitting unit and a surface emitting unit, where air is directed parallel to the first surface and light is emitted in a vertical direction to enhance both air flow and design aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a ventilation grille is disposed on the exposed surface with a panel, lamp unit, and intake opening, then the ventilation fan can provide basic ventilation function, but the design aesthetic and air flow path efficiency are compromised
Solution Approach 1:
The louver is divided into multiple light emitting units arranged in an annular pattern, with each unit independently emitting light. This segmentation allows the structure to serve both aesthetic illumination purposes and maintain functional air flow paths, as the segmented design creates optimized channels for air movement while providing decorative lighting effects
Solution Approach 2:
The louver structure is designed to perform multiple functions simultaneously: it serves as an air flow guidance structure with optimized pathways for ventilation efficiency, while also functioning as a lighting device with annular light emitting units that provide aesthetic illumination. This multi-functionality resolves the contradiction by making a single component serve both design and performance requirements
2Illumination intensity
If the annular light emitting unit emits light with uniform intensity, then the aesthetic illumination is uniform, but the brightness requirement for the surface emitting unit is not met
Solution Approach 1:
Different regions of the lighting system are assigned different light intensities based on their specific functions: the surface emitting unit has higher light intensity to provide adequate brightness and illumination, while the annular light emitting units have lower intensity for aesthetic ambient lighting. This local differentiation of quality resolves the contradiction between meeting brightness requirements and maintaining operational simplicity
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
Ensures an efficient air flow path while improving design through indirect illumination and ensuring brightness with differential light intensities, allowing for improved aesthetic integration.
Implementation Method 1
The annular light emitting unit emits light from the inside of the louver toward an outer circumference
Implementation Method 2
The surface emitting unit emits light in the vertical direction directed opposite to the casing
Data Source
AI summary
An annular light emitting unit emits light from the inside of a louver toward an outer circumference, with respect to the entire circumference direction. A surface emitting unit emits light in a vertical direction directed opposite to a casing. Light intensity of the surface emitting unit is greater than light intensity of the annular light emitting unit.