Foldable Air Filter Frame Design to Reduce Transport Volume

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Solution Overview

Problem

Conventional air filter units are bulky and expensive to transport and store due to their large size, which is necessary to maintain air flow and purification efficiency.

Innovation Solution

The air filter unit is structurally divided into a filter body and two foldable filter frames with elongated members and a coupling mechanism, allowing it to be compactly folded for reduced volume, facilitating easier transportation and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the filter has a significant area to maintain air flow and purification efficiency, then the air purification performance is improved, but the size and volume of the filter increases making it expensive to transport and store

Engineering Contradiction:
Improveair purification efficiencyVSAvoidfilter volume
Core Design Contradiction:
ProductivityVSVolume of stationary object

Solution Approach 1:

The filter is divided into multiple pleated sections or layers that can be collapsed or folded into each other, allowing the large surface area filter to be compacted into a smaller volume for storage and transport while maintaining the total filtering surface area for purification efficiency

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter structure is designed to nest or collapse into a compact form, similar to nested dolls, where the large surface area filter media is folded or rolled into a condensed configuration that reduces transport volume while preserving the total filtering area

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP3396269B2Air filter unit
Publication Date: 2023.04.19 BLUEAIR
  • EP3396269B2 patent drawingFigure 1
  • EP3396269B2 patent drawingFigure 2a~2b
  • EP3396269B2 patent drawingFigure 3

AI summary

The present invention relates to an air filter unit (10) for purifying air. The air filter unit comprising: a filter body (20) extending along an axis A; a first filter frame (30) and a second filter frame (40) arranged on opposite ends of said filter body (20), each of said first (30) and second filter frame (40) comprising four elongated frame members (50) turnably secured to each other, wherein said four elongated frame members (50) are turnably secured to each other such that said filter body (20) could be arranged in a first and a second state. The first state is such that the filter body is folded to reduce the volume of the filter unit and the second state is such that the filter body is assembled.