Fume extraction device and combination device with fume extraction device

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Solution Overview

Problem

Existing vapor extraction devices face contamination and potential damage due to liquids dripping off or entering the system, leading to soiling and equipment damage.

Innovation Solution

Incorporating a collection container with an overflow opening and an additional container, connected by a liquid line, to manage and redirect liquids away from critical components, preventing uncontrolled flow and reducing the risk of damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single collection container is used, then the device structure remains simple, but liquid overflow causes contamination and damage to the extractor device

Engineering Contradiction:

Improveprotection against liquid damageVSAvoidcontainer structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The collection container is divided into two separate containers: a first collection container with limited capacity and an additional container with larger capacity. This segmentation allows the system to handle different liquid volumes appropriately while protecting the extractor device from damage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The overflow opening in the first collection container provides a safety mechanism that redirects excess liquid to the additional container before it can overflow and damage the extractor device. This preemptive measure cushions against potential liquid damage.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Quantity of substance

If the collection container has large capacity, then it can hold more liquid, but the device height increases

Engineering Contradiction:

Improveliquid capacityVSAvoiddevice height

Core Design Contradiction:

Quantity of substanceVSLength of stationary object

Solution Approach 1:

Instead of increasing height vertically, the additional container with larger capacity is arranged horizontally adjacent to the first collection container. This dimensional change allows the system to accommodate more liquid volume without increasing the overall height of the extractor device.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Speed

If the overflow opening is close to the bottom, then liquid is redirected quickly, but the collection container capacity is reduced

Engineering Contradiction:

Improveliquid redirection speedVSAvoidcollection container capacity

Core Design Contradiction:

SpeedVSQuantity of substance

Solution Approach 1:

The overflow opening is positioned at a specific height that balances two requirements: it is sufficiently high to maximize the liquid storage capacity of the first collection container, yet low enough to enable timely redirection of excess liquid to the additional container. This local optimization of the overflow opening position resolves the contradiction between speed and capacity.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3290813B1Fume extraction device and combination device with fume extraction device

Publication Date: 2019.11.20 BSH HAUSGERATE GMBH

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AI summary

The invention relates to an extractor device which has a fan, an extractor housing (110) and a filter unit (14). The vapor extraction device (11) is characterized in that the vapor extraction device (11) has a collection container (142) for liquids with at least one overflow opening (1421) and an additional container (12) for liquids and between the collection container (142) and the additional container (12 ) is at least partially a liquid line (13). Furthermore, a combination device with such an extractor device (11) is described.