Fan Filtering Device with Disposable Filter Element
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Solution Overview
Problem
Conventional fan filters are expensive, deterring consumer purchase and failing to provide effective air purification due to poor airflow quality from dust accumulation on fan components.
Innovation Solution
A filtering device with a simple structure and low cost, comprising an inner and outer ring plate with a filter element, designed for easy installation between the fan's impeller and protective grill, using a non-woven fabric filter material with silver ions and pleated configurations, and made from plastic plates for enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fan filter is installed to purify air, then air purification effect is improved, but the price becomes expensive
Solution Approach 1:
The patent replaces expensive conventional fan filters with a disposable filter element made of non-woven fabric that can be easily replaced by consumers. This disposable approach significantly reduces the price while maintaining air purification functionality, directly resolving the contradiction between purification effect and cost.
Solution Approach 2:
The filter element uses non-woven fabric with porous structure to achieve air purification through physical filtration. This simple material-based solution eliminates the need for complex expensive filter mechanisms, providing effective purification at low cost.
2Reliability
If a fan filter is installed to purify air, then air quality is improved, but the structure becomes complex
Solution Approach 1:
The filter assembly is segmented into three simple components: inner ring plate, outer ring plate, and filter element. This segmentation allows for easy manufacturing, assembly, and replacement, significantly reducing structural complexity while maintaining purification functionality.
Solution Approach 2:
The patent extracts only the essential filtering function from complex conventional filter systems, implementing a simplified structure that includes merely the filter element and basic mounting rings, eliminating unnecessary complexity while preserving air purification effect.
3Reliability
If a fan filter is installed to purify air, then air purification is achieved, but installation becomes difficult
Solution Approach 1:
The filter assembly is divided into separable components (inner ring plate, outer ring plate, filter element) that can be easily assembled and disassembled. The inner ring plate fits on the motor cover shaft, and the outer ring plate with fixing pieces secures the filter element, enabling simple tool-free installation and replacement by consumers.
Solution Approach 2:
The fixing pieces on the outer ring plate enable users to easily secure the filter element themselves without requiring professional installation or special tools. This self-service design significantly improves installation convenience while maintaining effective air purification.
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 filtering device effectively purifies air by capturing dust and particles, improving airflow quality while being affordable and easy to install, thus enhancing the fan's performance and user willingness to purchase.
Implementation Method 1
The filter element is coupled between the inner ring plate and the outer ring plate and includes a through-hole therein... effectively purifies air by capturing dust and particles
Implementation Method 2
using a non-woven fabric filter material with silver ions
Data Source
AI summary
A filtering device is adapted to be mounted in a fan having a motor cover, a rotary shaft, an impeller combined at the rotary shaft, and a rear protective grill mounting on a mounting base provided on a front end of the motor cover. The filtering device includes an inner ring plate, an outer ring plate, and a filter element. The filter element is sandwiched between the inner ring plate and the outer ring plate, and the inner ring plate and the outer ring plate are coupled between the rear protective grill and the rear protective grill lock ring. The airflow sent out by the rotation of the impeller of the fan will pass through the filter element of the filtering device, achieving the effect of purifying air.