Flat Panel Hood Depth Stop for Flush Fit and Grease Protection

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Solution Overview

Problem

Existing flat panel hoods face issues with visible and inaccessible mechanical stops in the air flow, which can lead to functional impairment, increased repair costs, and manufacturing complexity due to deposition of fat and moisture, as well as aesthetic and assembly challenges.

Innovation Solution

A flat panel hood design featuring a variable position depth stop element that can be mounted and adjusted to ensure the vapor deflector is flush with the kitchen furniture, allowing for easy access and protection from vapors, and reducing assembly efforts by allowing user installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If mechanical fixed stops are located in the airflow of the fumes, then the depth of the flat panel hood can be adjusted, but grease and moisture accumulate on the stops impairing their function

Engineering Contradiction:
Improveadjustability of depthVSAvoidfunctionality of depth stop
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The depth stop element is extracted from the airflow path and relocated to the rear side of the vapor screen, where it is accessible for adjustment but not exposed to grease and moisture accumulation that would impair its function.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The vapor screen acts as an intermediary between the user and the depth stop element, allowing the stop to be positioned at the rear where it is protected from harmful factors while still controlling the depth adjustment mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If mechanical fixed stops are located in the airflow of the fumes, then the depth can be adjusted, but the stops are visible to the user which may be perceived as visually distracting

Engineering Contradiction:
Improveadjustability of depthVSAvoidvisual appearance
Core Design Contradiction:
Adaptability or versatilityVSShape

Solution Approach 1:

The depth stop element is extracted from the visible front area and relocated to the rear side of the vapor screen, making it invisible to users while maintaining its depth adjustment functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The depth stop element is repositioned from the front visible dimension to the rear hidden dimension, allowing it to remain functional while being concealed from user view to improve visual appearance.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If mechanical fixed stops are located in the airflow of the fumes, then the depth can be adjusted, but the stops are difficult to access for repairs increasing repair costs

Engineering Contradiction:
Improveadjustability of depthVSAvoidaccessibility of depth stop
Core Design Contradiction:
Adaptability or versatilityVSEase of repair

Solution Approach 1:

The depth stop element is extracted from the enclosed airflow path and repositioned to the rear side of the vapor screen where it is easily accessible for maintenance and repair operations.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The depth stop element is positioned such that users can easily access and adjust it themselves without requiring professional service, enabling simple maintenance and depth adjustments.

Inventive Principle:
Principle #25Self-service

4Adaptability or versatility

If mechanical fixed stops are installed during manufacturing, then the depth can be adjusted, but it represents additional assembly effort increasing manufacturing costs

Engineering Contradiction:
Improveadjustability of depthVSAvoidassembly effort
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The depth stop element is designed to be movable and adjustable by the user after installation, eliminating the need for precise pre-positioning during manufacturing and reducing assembly complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The depth adjustment is transferred from the manufacturing process to the user, allowing the product to be manufactured more simply while enabling end-users to customize the depth setting themselves.

Inventive Principle:
Principle #25Self-service

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 enhances the durability and visual appeal of the flat panel hood by hiding the depth stop element, reducing maintenance and manufacturing costs, and ensuring a flush fit with kitchen furniture despite manufacturing tolerances, while maintaining easy accessibility for repairs.

Implementation Method 1

The extractor hood also has a fan to draw air, along with the fumes, from the cooktop into the fume hood and through the grease filter

Methodology Applied
Scientific EffectAirflow generation:

Implementation Method 2

The intake screen can also be called a fume hood. The extractor hood also has a fan to draw air, along with the fumes, from the cooktop into the fume hood and through the grease filter, thus removing as much grease as possible from the fumes

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 3

Recirculating extractor hoods typically also have an additional odor filter, for example, in the form of an activated carbon filter, to remove cooking and frying odors from the fumes as completely as possible

Methodology Applied
Scientific EffectAdsorption: Adsorption

Data Source

PatentEP4141329A1Flat panel hood
Publication Date: 2023.03.01 MIELE & CO KG
  • EP4141329A1 patent drawingFigure 1~2
  • EP4141329A1 patent drawingFigure 3~4
  • EP4141329A1 patent drawingFigure 5~6

AI summary

The invention relates to a flat panel hood (1) designed to draw in and filter fumes, wherein the flat panel hood (1) is further designed to be attached, at least partially, to and/or in a kitchen unit (2), and wherein the flat panel hood (1) has a fume shield (12) which is designed to be arranged in the vertical direction (Z) below the kitchen unit (2) and to be moved in the longitudinal direction (X) relative to the kitchen unit (2) towards and away from a user by means of at least one extension (14). The flat panel hood (1) is characterized by at least one depth stop element (15) which is designed to be variably positioned on and/or in the extension (14) in the longitudinal direction (X) such that the extent of movement of the fume shield (12) in the longitudinal direction (X) away from the user can be limited by the positioning of the depth stop element (15).