Exposed Dust Collection Surface for Direct Air Purification

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Solution Overview

Problem

Existing air purifiers face inefficiencies in pollutant collection due to internal air ducts, difficulty in cleaning, and poor user experience, with limited purification capacity and high maintenance costs.

Innovation Solution

An air purification equipment with an exposed dust collection surface that generates an electric field to collect pollutants externally, using a split or integrated dust collection and discharging component design, and a base for positioning, enhancing purification efficiency and ease of cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If air purification equipment uses internal air ducts and air chambers to collect pollutants, then the equipment has a structured purification system, but the purification efficiency is reduced and the structure becomes complex

Engineering Contradiction:
Improveinternal structure complexityVSAvoidpurification efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent extracts the dust collection function from the internal structure and places it on the external surface. The dust collection assembly is positioned on the outer surface of the air purifier body, allowing direct collection of pollutants from the surrounding air without needing internal air ducts and chambers, thus simplifying the device structure while maintaining or improving purification efficiency.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent transitions from three-dimensional internal volume-based collection to two-dimensional surface-based collection. By placing the dust collection assembly on the external surface with its collection surface facing outward, the system utilizes the outer surface area of the device as the active collection zone, effectively adding a new dimensional approach to pollutant capture.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of repair

If air purification equipment uses built-in air ducts and air chambers, then the equipment has enclosed purification paths, but cleaning dust becomes difficult

Engineering Contradiction:
Improvecleaning easeVSAvoidinternal structure
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The dust collection function is extracted from the internal enclosed structure and placed on the external surface. The dust collection assembly is positioned on the outer surface of the air purifier body, allowing direct access to the collection surface for easy cleaning without disassembling internal components or air ducts.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The exposed dust collection surface on the external structure allows users to easily clean accumulated dust directly without requiring disassembly of internal components. The design enables self-maintenance by making the collection surface accessible from the outside, eliminating the need for complex internal access procedures.

Inventive Principle:
Principle #25Self-service

3Productivity

If air purification equipment introduces air into internal ducts first, then the equipment has controlled airflow paths, but the purification efficiency is affected

Engineering Contradiction:
Improvepurification efficiencyVSAvoidairflow control structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent removes the intermediate step of introducing air into internal ducts before purification. The dust collection assembly directly collects pollutants from the air in the surrounding environment through its external positioning, eliminating the need for complex airflow control systems and internal ductwork.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the dust collection function from the main body structure, placing it on the external surface as a separate assembly. This segmentation allows the collection surface to independently interact with the surrounding air without requiring integrated internal airflow paths, simplifying the overall system architecture.

Inventive Principle:
Principle #1Segmentation

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 equipment achieves high purification capacity and efficiency with reduced maintenance needs, allowing for miniaturization and improved user experience by directly collecting pollutants through an electric field without internal structures, and optimizing the adsorption force through ion polarity.

Implementation Method 1

the dust collection assembly can generate an electric field when powered on

Methodology Applied
Scientific EffectElectric field: Electric Field

Implementation Method 2

the polarized pollutants move towards the dust collection surface under the action of Coulomb force until the pollutants are adsorbed on the dust collection surface

Methodology Applied
Scientific EffectCoulomb force: Coulomb's Law

Implementation Method 3

when the dust collection assembly is powered on, electric ions are accumulated therein, and under the action of the accumulated electric ions, an electric field can be generated

Methodology Applied
Scientific EffectElectric ion accumulation: Electrical Accumulator

Implementation Method 4

the polarized pollutants move towards the dust collection surface under the action of Coulomb force until the pollutants are adsorbed on the dust collection surface

Methodology Applied
Scientific EffectAdsorption: Adsorption

Data Source

PatentEP4613381A1Air purification equipment
Publication Date: 2025.09.10 GD MIDEA ENVIRONMENT APPLIANCES MFG
  • EP4613381A1 patent drawingFigure 1
  • EP4613381A1 patent drawingFigure 2
  • EP4613381A1 patent drawingFigure 3

AI summary

The present application provides air purification equipment, and relates to the field of air purification. The air purification equipment comprises: a main body; a dust collection assembly, provided in the main body, and the dust collection assembly comprises a dust collection surface, the dust collection assembly is configured to generate an electric field when powered on, the dust collection surface is at least partially exposed, and the at least partially exposed dust collection surface is configured to collect pollutants in the air outside the main body through the electric field.