Ventilation fan
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Solution Overview
Problem
Buildings with inadequate ventilation due to construction materials that block outdoor noise and heat lead to insufficient air exchange and accumulation of harmful contaminants.
Innovation Solution
A ventilation fan design featuring a fan, a cover module with a gap for side air suction, and a detachable filter that prevents dust accumulation and allows for easy filter replacement, enhancing indoor ventilation and noise resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If buildings use special materials to block outdoor noise and heat, then noise and heat blocking is improved, but ventilation is worsened
Solution Approach 1:
The cover is divided into a main body and a detachable cover portion, creating a segmented structure that allows air to pass through the gap between them. This segmentation enables the cover to simultaneously block noise/heat while maintaining ventilation pathways.
Solution Approach 2:
The filter acts as an intermediary element positioned between the indoor environment and the ventilation system. It allows air to pass through while filtering contaminants, and the gap between the cover main body and cover portion serves as an intermediary air passage that enables side suction of air.
2Object-affected harmful factors
If the cover completely encloses the fan, then noise blocking is improved, but dust accumulation on the cover is worsened
Solution Approach 1:
The air suction direction is changed from the traditional front direction to the side direction by creating a gap between the cover main body and cover portion. This dimensional change in air flow path allows the cover to remain enclosed for noise blocking while preventing dust accumulation through side suction.
3Reliability
If the filter is fixed inside the cover, then filtration is improved, but filter replacement and cleaning is worsened
Solution Approach 1:
The cover portion is designed to be detachable and movable relative to the cover main body, transforming the filter from a fixed to a dynamic configuration. The filter can be easily removed by detaching the cover portion, enabling simple cleaning and replacement while maintaining effective filtration during operation.
Solution Approach 2:
The cover is segmented into a main body and a detachable cover portion that houses the filter. This segmentation allows the filter to remain securely positioned during operation for effective filtration while enabling easy access for maintenance by simply removing the cover portion.
4Quantity of substance
If the cover size is reduced to match the opening, then material usage is improved, but side suction of air is worsened
Solution Approach 1:
The cover portion is designed with a size larger than the opening only in the specific local area where side suction is needed, while other areas can be minimized. This localized size increase creates the necessary gap for air intake without unnecessarily increasing overall material usage.
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 ventilation fan effectively exchanges indoor air, prevents dust accumulation, and facilitates easy filter maintenance while reducing noise and water ingress, improving indoor air quality and user convenience.
Implementation Method 1
The air flows to the filter and the inlet through the gap and then flows out of the outlet through the fan
Implementation Method 2
the filter detachably slides on the slideways to be disposed at the opening. The air flows to the filter and the inlet through the gap
Data Source
AI summary
A ventilation fan comprises a fan, a cover module and a filter. The fan includes an inlet and an outlet. The cover module is disposed at the inlet and includes a main body and a cover. The main body includes an opening and fixing portions. The opening is disposed corresponding to the inlet. The periphery of the opening is configured with two opposite slideways. The fixing portions are disposed on the main body. The cover and the main body are disposed separately to form a gap and the cover includes connecting portions correspondingly connected to the fixing portions. The filter detachably slides on the slideways to be disposed at the opening. The size of the cover is larger than that of the opening. The air flows to the filter and inlet through the gap and flows out of the outlet through the fan.