Extractor Hood with Movable Inner Element for Easier Cleaning Access

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Solution Overview

Problem

Extractor hoods are difficult to clean due to their complex structure, making it challenging to access and maintain the areas that become dirty during operation, especially those with grease and electronic components.

Innovation Solution

An extractor hood design featuring a movable inner element that can be pivoted from its operating position to a cleaning position, allowing easier access to the underside and covering the distance between the suction and outlet openings, which can be made of materials like plastic or metal and includes air guiding elements for improved airflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a complex structure with fixed inner frame is used to guide air flow, then air guiding function is achieved, but cleaning becomes difficult

Engineering Contradiction:
Improvecleaning easeVSAvoidstructure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The inner element is made movable relative to the viewing hood, allowing it to be positioned in different locations including protruding from the viewing hood for easy access during cleaning operations, while still performing its air guiding function when in the operative position

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The inner element is designed as a separate, detachable component from the viewing hood structure, allowing it to be independently removed, cleaned, or replaced without disassembling the entire hood assembly

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the inner element is made movable to facilitate cleaning, then cleaning access is improved, but structural stability may be compromised

Engineering Contradiction:
Improvecleaning accessVSAvoidstructural stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The connection mechanism between the inner element and viewing hood serves multiple functions: it securely holds the inner element in its operative position for air guiding, allows controlled movement for cleaning access, and enables easy detachment for maintenance, all through a single universal connection design

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

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

This design simplifies the cleaning process by allowing users to access and clean the inner elements without having to bear their weight, reduces energy consumption, and improves airflow, making maintenance more efficient and effective.

Implementation Method 1

The inner element has an air passage (1012) through which air can escape from the space defined by the inner element out of the viewing hood, in particular via the outlet opening (103)

Methodology Applied
Scientific EffectAir flow guidance:

Data Source

PatentEP3904772B1Extractor hood with viewing cover and inner element
Publication Date: 2024.10.16 BSH HAUSGERATE GMBH
  • EP3904772B1 patent drawingFigure 1
  • EP3904772B1 patent drawingFigure 2
  • EP3904772B1 patent drawingFigure 3

AI summary

The present invention relates to a cooker hood comprising a viewing hood (10) and at least one inner element (101) for covering the gap between an intake opening (102) and an outlet opening (103) of the viewing hood (10). The cooker 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).