Extractor Hood with Removable Inner Element for Easy Cleaning

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Solution Overview

Problem

Existing extractor hoods are difficult to clean due to housing parts being exposed to incoming air, making it challenging to access and maintain the internal components effectively.

Innovation Solution

An elastically deformable plastic inner element is used to cover the distance between the intake and outlet openings of the viewing hood, allowing for easy detachment and cleaning, with features like air guiding elements to improve airflow and reduce turbulence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If housing parts are exposed to incoming air in existing extractor hoods, then air can be guided from intake to outlet opening, but the housing parts become difficult to access and clean

Engineering Contradiction:
ImprovecleanabilityVSAvoidhousing structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The housing is divided into a removable inner element and a stationary outer housing. The inner element can be detached for cleaning while the outer housing remains in place, solving the contradiction between exposed housing parts and cleanability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The inner element is extracted as a separate removable component from the housing. This allows the inner element to be taken out for cleaning without disassembling the entire housing structure, improving accessibility while maintaining structural integrity.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of operation

If an inner element is added to cover the distance between intake and outlet openings, then cleaning becomes easier, but the device structure becomes more complex

Engineering Contradiction:
ImprovecleanabilityVSAvoidnumber of components
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The inner element combines multiple functions: it serves as a structural component guiding air from intake to outlet opening, and simultaneously as a removable cleaning element. This merging reduces the need for additional separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The inner element is designed to perform multiple functions: structural support, air guidance, and easy cleaning access. This multi-functionality reduces overall device complexity while improving maintainability.

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

3Ease of operation

If the inner element is made of elastically deformable plastic, then detachment force is reduced for easier cleaning, but the structural strength may be compromised

Engineering Contradiction:
Improvedetachment easeVSAvoidstructural strength
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The inner element is made of elastically deformable plastic, allowing it to flex during attachment and detachment. This flexibility reduces the force required for removal while maintaining sufficient structural strength for normal operation.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The material properties of the inner element are optimized to have specific elastic characteristics. The material is chosen to provide adequate strength during operation while allowing easy detachment when cleaning is required, balancing strength and ease of removal.

Inventive Principle:
Principle #35Parameter changes

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 solution simplifies the cleaning process by protecting difficult-to-reach areas, reducing the force required for detachment, and improving airflow efficiency, resulting in easier maintenance and reduced energy consumption.

Implementation Method 1

the inner element consists of an elastically deformable plastic

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

the inner element has an air passage through which air can be guided to the outlet opening

Methodology Applied
Scientific EffectFluid flow:

Data Source

PatentEP3222919B1Extractor hood with viewing cover and inner element
Publication Date: 2022.04.06 BSH HAUSGERATE GMBH
  • EP3222919B1 patent drawingFigure 1
  • EP3222919B1 patent drawingFigure 2
  • EP3222919B1 patent drawingFigure 3

AI summary

The present invention relates to an extractor hood comprising a viewing hood (10) and at least one inner element (101) for covering the distance between an intake opening (102) and an outlet opening (103) of the viewing hood (10). The extractor hood is characterized in that the inner element (101) is connected to the viewing hood (10) and is movable relative to the viewing hood (10). The invention also relates to an extractor hood, which is characterized in that the inner element (101) is connected to the viewing hood (10) and the inner element (101) consists of an elastically deformable material.