Detachable Two-Part Filter Element for Extractor Hood Cleaning

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Solution Overview

Problem

Existing filter elements for extractor hoods have complex structures, making them difficult to clean and maintain, leading to a decrease in separation efficiency over time and increased production and cleaning costs.

Innovation Solution

A filter element with a simple structure consisting of two detachable flat base filter parts, allowing for easy assembly and disassembly, which includes air-permeable slots and projections for enhanced separation efficiency and stability, facilitating effective cleaning and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If filter elements have a fixed complex structure, then they provide stable separation performance initially, but they become difficult to clean and maintain over time

Engineering Contradiction:
Improveseparation performanceVSAvoidcleaning ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The filter element is divided into multiple detachable filter parts (first filter part, second filter part, etc.) that can be separated from each other. This segmentation allows each part to be removed and cleaned independently, solving the problem of difficult maintenance while maintaining the overall filtration function. The filter parts can be detached for cleaning and reassembled, ensuring continuous operation with maintained separation performance.

Inventive Principle:
Principle #1Segmentation

2Reliability

If filter elements have a complex structure, then they may achieve better separation, but their production and cleaning costs increase

Engineering Contradiction:
Improveseparation efficiencyVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

By dividing the filter into separate modular parts connected by simple connecting elements, the manufacturing process is simplified. Each filter part can be produced independently using standard fabrication techniques, reducing overall production complexity and cost compared to manufacturing a single complex integrated structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connecting elements serve multiple functions: they join filter parts together to form the complete filter assembly, provide structural support, and enable easy detachment for cleaning. This multi-functionality reduces the need for additional specialized components, simplifying manufacturing and reducing costs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Device complexity

If filter elements are designed as single integrated units, then they are structurally simple, but they cannot be cleaned effectively over time

Engineering Contradiction:
Improvestructural simplicityVSAvoidcleaning capability
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

The filter is segmented into multiple detachable parts that can be separated for cleaning. While this increases structural complexity compared to a single integrated unit, it enables effective cleaning by allowing access to all surfaces including internal areas that would be inaccessible in a monolithic design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter structure transitions from a static integrated unit to a dynamic assembly that can be configured in different states: assembled for operation and disassembled for cleaning. This dynamic capability allows the filter to adapt between its operational and maintenance modes, solving the cleaning accessibility problem.

Inventive Principle:
Principle #15Dynamics

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 filter element maintains high separation efficiency over time due to its ease of cleaning and simplified production, reducing maintenance costs and improving the handling and cleaning processes.

Implementation Method 1

The filter element has an at least partially air-permeable filter body

Methodology Applied
Scientific EffectAir permeability: Permeation

Data Source

PatentEP2803913B1Filter element for an extractor hood and extractor hood
Publication Date: 2021.03.17 BSH HAUSGERATE GMBH
  • EP2803913B1 patent drawingFigure 1
  • EP2803913B1 patent drawingFigure 2
  • EP2803913B1 patent drawingFigure 3

AI summary

The present invention relates to a filter element for an extractor hood for separating impurities from vapors, with an at least partially air-permeable filter body (10). The filter element (1) is characterized in that the filter body (10) of the filter element (1) consists of a first filter part (11) with a flat base (110) and a second filter part (12) with a flat base (120), that the filter parts (11, 12) are detachably connected to one another, that in each case at least one slot (13) is made in the base surfaces (110, 120) of the filter parts (11, 12) and that each slot (13) in the first filter part (11) is offset to each slot (13) in the second filter part (12). The invention also relates to an extractor hood with at least one filter element (1).