Hinged Filter Frame for Variable-Shape Air Purifier Filtration

Solution Overview

Problem

Conventional air purifiers face limitations in design diversity and operational optimization due to fixed filter types and capacities, which affect air purification efficiency and durability.

Innovation Solution

An air purifier design featuring a shape variable type filter frame and filter recognition system, allowing for multiple filter configurations and automatic control setting adjustments based on filter type and capacity, enabling multidirectional air discharge and optimized performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed filter type and capacity are used in the air purifier, then the manufacturing and control are simplified, but the design diversity is limited and operational performance cannot be optimized for different filter types

Engineering Contradiction:

Improvedesign diversityVSAvoidfilter configuration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The filter frame is designed to be movable rather than fixed, allowing it to rotate between a first position (filter installed) and a second position (filter removed). This dynamic structure enables the air purifier to adapt between different filter configurations while maintaining a relatively simple overall device structure, thus resolving the contradiction between design versatility and device complexity.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the filter frame is fixed in position, then the structure is simple and stable, but the filter cannot be easily removed or replaced

Engineering Contradiction:

Improvefilter replacement easeVSAvoidfilter frame structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The filter frame is designed to be movable rather than fixed, allowing it to rotate between a first position (filter installed) and a second position (filter removed). This dynamic structure enables the air purifier to adapt between different filter configurations while maintaining a relatively simple overall device structure, thus resolving the contradiction between design versatility and device complexity.

Inventive Principle:

Principle #15Dynamics

3Productivity

If a single suction structure is used, then the device complexity is reduced, but the air purification efficiency is lower compared to double suction structure

Engineering Contradiction:

Improveair purification efficiencyVSAvoidsuction structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The filter frame serves multiple functions: it holds the filter during operation, provides structural support, and can be rotated to enable filter removal. This multi-functionality allows the system to achieve double suction capability (higher productivity) without proportionally increasing device complexity, as the same filter frame structure enables both single and double suction configurations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10918984B2Air purifier with hinged filter frame

Publication Date: 2021.02.16 COWAY CO LTD

AI summary

The present invention provides an air purifier. The air purifier according to one preferred embodiment, of the present invention may comprise: a housing; a blowing unit installed in the housing so as to draw in external air; and a filter unit having filtering surfaces, through which the air passes and which are disposed in multiple directions, and an air inflow space, which has at least a part thereof surrounded by the filtering surfaces disposed in the multiple directions and into which the air discharged from, the blowing unit flows.