Extraction device with filter carrier and filter

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Solution Overview

Problem

Existing extraction devices, particularly downdraft extraction systems, have complex filter structures that are difficult to maintain and clean, leading to potential output losses due to inaccessible areas and cumbersome maintenance processes.

Innovation Solution

A modular extraction device design featuring a separable and removable filter element and filter carrier, allowing for easy cleaning and replacement, with a clamping mechanism using a spring element and retainer element for secure positioning and noise reduction, and a pivoted take-up mechanism for guided installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a complex filter structure is used in downdraft extraction devices, then the filtering function is improved, but the ease of maintenance and cleaning deteriorates

Engineering Contradiction:
Improvefiltering functionVSAvoidmaintenance and cleaning
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The filter assembly is divided into separate components: a filter carrier that remains in the extraction device and a removable filter element. This segmentation allows the filter element to be easily removed for cleaning or replacement while the filter carrier stays in place, resolving the contradiction between maintaining a complex filtering structure and enabling easy maintenance.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the filter element is integrated into the filter carrier, then the structural stability is improved, but the ease of replacement deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidfilter element replacement
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The connection between the filter element and filter carrier is designed to be dynamic rather than fixed. The filter element can be easily inserted into and removed from the filter carrier, providing structural stability during operation while allowing simple replacement during maintenance. This dynamic connection resolves the contradiction between stability and ease of replacement.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If a removable filter carrier design is implemented, then the ease of cleaning is improved, but the device complexity increases

Engineering Contradiction:
Improvecleaning processVSAvoidfilter assembly structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The filter carrier is extracted as a separate removable component from the extraction device housing. This allows the filter carrier to be easily removed for cleaning while keeping the rest of the extraction device structure simple. The filter carrier itself is designed as a simple container that holds the filter element, avoiding unnecessary complexity while enabling easy cleaning access.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Facilitates simplified maintenance and complete filter cleaning, ensuring continuous filtering efficiency and reducing noise, thereby extending the device's lifespan and improving user convenience.

Implementation Method 1

at least one spring element which is supported against an inner surface of the filter carrier and which acts on the filter element, particularly on the filter frame

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The filter element is configured to filter out particles, which may be solid particles and/or droplets, from the air passing therethrough

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS20230296263A1Extraction device with filter carrier and filter
Publication Date: 2023.09.21 ELECTROLUX APPLIANCES
  • US20230296263A1 patent drawing
  • US20230296263A1 patent drawing
  • US20230296263A1 patent drawing

AI summary

The present invention relates to an extraction device (14) for removing air from an area above a cooking hob (12). The extraction device (14) comprises an inlet opening (38) for an intake of the air into an interior of the extraction device (14), an outlet opening (30) for exhausting air, at least one filter element (52; 52a, 52b), and at least one filter carrier (50) for accommodating the at least one filter element (52; 52a, 52b). The filter element (52; 52a, 52b) and the filter carrier (50) are arranged in airflow direction between the inlet opening (38) and the outlet opening (30). According to the invention, the filter element (52; 52a, 52b) is a separate unit, which is separable and removable from the filter carrier (50). The present invention further relates to a combination appliance (10) and to a method for providing a filter carrier (50) of an extraction device (14) with a filter element (52a, 52b).