Filter structure capable of removing dust

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Solution Overview

Problem

Conventional air conditioners lack a mechanism to effectively block dust from entering and remove dust collected inside the unit, leading to contamination and deterioration of the filtering function.

Innovation Solution

A filter structure with a circular rim, motor-attached frames, a dust collection net, a rotating brush, an opening at the rim for dust discharge, and a concave groove to facilitate dust removal from the net, preventing dust from entering the air conditioner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a brush is continuously rotated to sweep and drag dust from the filter, then dust removal action is provided, but the brush drags dust along the filter surface and discharge efficiency is reduced

Engineering Contradiction:

Improvedust removal efficiencyVSAvoiddust discharge efficiency

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The brush is configured to vibrate in the vertical direction while rotating, creating a dual motion that prevents dust from adhering to the brush and filter surface. The vibration frequency is set to resonate with the dust particles, causing them to detach and fall into the collection container rather than being dragged along the filter surface.

Inventive Principle:

Principle #18Mechanical vibration

Solution Approach 2:

The brush operates with periodic vibration cycles during rotation, creating intervals of high-velocity contact followed by separation. This periodic action prevents dust from forming continuous trails along the filter, instead causing dust to accumulate and detach periodically into the collection container.

Inventive Principle:

Principle #19Periodic action

2Productivity

If no dust blocking mechanism is installed at the air inlet, then air flow is unobstructed, but dust enters the air conditioner and contaminates the interior

Engineering Contradiction:

Improveair flow efficiencyVSAvoiddust contamination

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

A dust blocking net is installed at the air inlet to preliminarily capture dust particles before they enter the air conditioner interior. The net is positioned to intercept dust-laden air flow, separating particles from the breathable air stream before the air enters the living space.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The dust blocking net serves as an intermediary element between the external environment and the air conditioner interior. It mediates the air flow by allowing clean air to pass through while intercepting and collecting dust particles, preventing direct contamination of the interior components.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If a pre-filter is installed to collect large particles, then germs and bacteria are adsorbed, but the filter becomes contaminated and requires frequent cleaning

Engineering Contradiction:

Improvegerm and bacteria removalVSAvoidfilter maintenance complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The dust collection container is extracted as a separate, removable component from the filter assembly. Dust and captured particles are collected in this external container rather than accumulating directly on the filter media, allowing the filter to be cleaned less frequently while maintaining its filtering function.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system separates the dust collection function from the filtration function, allowing collected dust to be discarded in the removable container while the filter media is recovered and reused. This extends the service life of the filter and reduces maintenance frequency.

Inventive Principle:

Principle #34Discarding and recovering

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 efficiently removes dust without dragging it, maintaining filter efficiency and preventing dust from entering the air conditioner, thus ensuring cleaner indoor air.

Implementation Method 1

a brush, which is in close contact with a dust collection net of the filter, is continuously rotated to sweep and drag dust

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

a brush configured to be in close contact with the dust collection net and to be rotated by the motor

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentUS11774120B2Filter structure capable of removing dust

Publication Date: 2023.10.03 CENDORI

AI summary

A filter structure capable of removing dust is proposed. The filter structure includes a circular rim part; a frame, extending from the rim part, for installing a motor; a dust collection net attached to the frame; a brush which is in close contact with the dust collection net and is rotated by the motor; an opening, formed at a lower end of the rim part, for discharging dust; an open part formed at one side of the dust collection net; and a concave groove part having an outside coupled to the open part and in one-side communication with the opening at the rim part.