Cooktop Vapor Extractor Baffle Layout for Grease Separation
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Solution Overview
Problem
Existing ventilation devices integrated into cooktops struggle with effective grease and moisture separation, leading to soiling of critical components and increased cleaning effort, particularly at high extraction rates.
Innovation Solution
Incorporation of baffles on the collection tray to separate liquid and grease carried along in steam, with one baffle positioned between the grease filter and the blower, ensuring the baffle's upper surface maintains the same or smaller distance to the cooktop than the grease filter's underside, and airflow is directed as an underflow between the grease filter and collection tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high suction power is used to increase extraction rate, then fume extraction performance is improved, but grease and moisture contamination of the fan increases
Solution Approach 1:
The vapor outlet is divided into two separate outlets positioned on opposite sides of the grease filter. This segmentation allows the vapor stream to be split, with one portion passing through the grease filter and the other bypassing it, thereby reducing grease and moisture contamination while maintaining high extraction rates
Solution Approach 2:
A baffle is introduced as an intermediary element between the grease filter and the fan. The baffle is positioned to allow underflow of vapor beneath the grease filter while blocking direct flow paths that would carry grease and moisture to the fan, thus protecting the fan from contamination
2Productivity
If vapor flows directly from grease filter to fan, then extraction efficiency is maintained, but cleaning effort increases due to grease accumulation
Solution Approach 1:
The baffle serves as a protective intermediary between the grease filter and the fan. It allows vapor to pass through while blocking grease and moisture, thereby reducing the accumulation of contaminants on the fan and significantly decreasing cleaning effort and frequency
Solution Approach 2:
The harmful components (grease and moisture) are extracted from the vapor stream by the baffle before reaching the fan. This selective extraction protects the fan from contamination while allowing the vapor extraction function to continue efficiently
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
Enhances grease and moisture separation, reducing soiling of the fan and odor filter, allowing for higher flow rates with less grease and moisture reaching these components, thus improving extraction efficiency and reducing cleaning effort.
Implementation Method 1
two vapor outlets, each designed as a filter wall for removing grease contained in the vapor
Implementation Method 2
at least one baffle is arranged on the collection tray for separating liquid and grease carried along in the steam
Implementation Method 3
a fan arranged in the extractor hood housing and in the direction of flow towards the grease filter and the drip tray for extracting fumes rising above the cooktop
Implementation Method 4
the vapor exiting the grease filter on the side facing away from the fan can flow in an underflow between the grease filter and the collection tray towards the fan
Data Source
Figure 1
AI summary
The invention relates to a fume extraction device (4) comprising a grease filter (12), a collection tray (14) for liquid (16) arranged below the grease filter (12), and a blower (18), wherein the grease filter (12) has a fume inlet opening (22) and two fume outlets (24, 26) each designed as a filter wall, and wherein one fume outlet (24) is arranged on a side of the grease filter (12) facing the blower (18) and the other fume outlet (26) is arranged on a side of the grease filter (12) facing away from the blower (18), and wherein the fumes (20) exiting away from the blower can flow in an underflow between the grease filter (12) and the collection tray (14) in the direction of the blower (18), wherein at least one baffle wall is provided on the collection tray (14). (28, 30) is arranged for the separation of liquid (16) and fat carried along in the vapor (20),wherein one of the baffles (30) is arranged in a flow path of the vapor (20) between the grease filter (12) on the one hand and the blower (18) on the other, and wherein an upper surface of this baffle (30) facing the cooktop (8) has the same distance to the cooktop (8) as, or a smaller distance to, the cooktop (8) than an underside of the grease filter (12) facing the drip tray (14). The invention further relates to a cooktop (2).