Rotating Disc Air Filter With Collar to Prevent Particle Recirculation
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Solution Overview
Problem
Existing air filters in air conditioning systems fail to effectively remove small solid particles, leading to their recirculation and potential clogging of filter elements, as they spread impurities back into the air and allow particles to swirl back into indoor spaces.
Innovation Solution
An improved air filter design featuring a disc-type filter element with a connected power unit, positioned outside a ventilation duct aperture, and a concentric ring-type collar that creates an annular gap to direct impurities radially away from the filter element, preventing their recirculation and ensuring effective removal of solid particles through a tangential air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a collecting tank is provided around the air filter to collect liquid impurity droplets, then liquid impurity collection capability is improved, but small solid particles swirl within the air flows and spread back into indoor air
Solution Approach 1:
The invention divides the air filtration function into two separate components: a filter element for capturing solid particles and a collecting tank for capturing liquid droplets. This segmentation allows each component to specialize in its respective function, preventing solid particles from being recirculated while liquid droplets are collected in the tank.
Solution Approach 2:
The invention introduces a separating chamber as an intermediary space between the filter element and the collecting tank. This chamber allows liquid droplets to settle and be collected while permitting filtered air to pass through, effectively separating the liquid collection function from the solid particle filtration function and preventing solid particle recirculation.
2Productivity
If the filter element rotates to clean the air, then air cleaning capability is improved, but impurities are spread back in the air flow
Solution Approach 1:
The invention extracts the captured impurities from the main air flow by providing a collecting tank that receives and retains liquid droplets and particles. This separation removes the harmful impurities from the circulation path, allowing the rotating filter element to continue cleaning air without recirculating captured contaminants.
3Productivity
If the filter element is placed close to the ventilation duct aperture, then air flow efficiency is improved, but filter clogging by small particles occurs
Solution Approach 1:
The invention introduces a separating chamber as an intermediary between the filter element and the ventilation duct aperture. This chamber captures and retains small particles before they can clog the filter element holes, allowing the filter to maintain high air flow efficiency without suffering from particle accumulation and clogging.
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 solution effectively removes small solid particles from the air flow, preventing clogging of the filter element and ensuring purified air is conveyed, with a simple and easy-to-clean structure that maintains air flow efficiency even with high impurity levels.
Implementation Method 1
the latter can be conveyed along with the air flow through a gap between the collar and the ventilation duct radially away from the filter element
Data Source
AI summary
The invention relates to an air filter which is intended for an air conditioning system. The air filter (1 ) comprises a disc type filter element (2) and a power unit (3), preferably an electric motor, which is connected to the filter element for rotating the same. The filter element (2) is arranged in connection with a ventilation duct (4), such that it is placed outside an aperture (4a) of the ventilation duct (4) at a first distance (s) therefrom, and such that it is concentric with the ventilation duct. The ventilation duct is supplied by way of the aperture with air (A) cleaned by the air filter. According to the invention, the air filter further comprises a ring type collar (5), which is arranged outside the aperture (4a) of the ventilation duct at a second distance (k) therefrom concentrically with the ventilation duct (4). The collar (5) is adapted to widen towards the aperture (4a). The collar (5) is most preferably in the shape of a truncated cone.