Extractor Hood Filter Support With Inclined Odour Filtration
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Solution Overview
Problem
Existing extractor hoods face challenges in efficiently cleaning odorous substances due to limited space above the fan, leading to small inflow areas for odor filters and difficulty in accessing and replacing filters.
Innovation Solution
The solution involves arranging at least one filter element in the extractor hood at an angle to the air flow direction, using a separate filter carrier that can be retrofitted to guide air to the filter element, with an inclined filter mount design that increases the inlet area and minimizes installation space, allowing for efficient air cleaning and easy filter replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If odor filters are arranged after the fan in the chimney, then the structure is simple, but the inflow area of the odor filter becomes small due to limited space
Solution Approach 1:
The filter element is arranged at an angle (45-60 degrees) to the airflow direction, utilizing three-dimensional space above the fan rather than being constrained to a linear arrangement after the fan. This angular orientation increases the effective inflow area while maintaining compact installation space.
2Volume of stationary object
If the filter element is arranged horizontally above the fan, then the installation space is minimized, but the inlet area is reduced and filter replacement becomes difficult
Solution Approach 1:
The filter holder is designed with a detachable connection system that allows the filter element to be easily removed and replaced. The holder can be quickly detached from the housing, enabling maintenance operations without complex disassembly, thus improving ease of operation while maintaining compact installation.
3Productivity
If the filter element is arranged at an angle to the airflow direction, then the inlet area increases and odor removal efficiency improves, but the device complexity increases
Solution Approach 1:
The filtering function is separated into a distinct, modular filter element that can be independently arranged at the optimal angle. This segmentation allows the filter holder to be designed as a separate component with built-in angular positioning features, simplifying the overall assembly process while achieving improved odor removal efficiency.
4Productivity
If a large filter element is used to increase odor removal efficiency, then the inlet area increases, but the installation space requirements increase
Solution Approach 1:
By arranging the filter element at an angle to the airflow direction, the design utilizes three-dimensional space more effectively. This angular orientation allows a larger filter surface area to be accommodated within the same horizontal footprint above the fan, increasing air cleaning efficiency without proportionally increasing installation space requirements.
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 configuration enhances the efficiency of air cleaning by increasing the inlet area for odor filters, reduces noise, and simplifies the structure and handling of the extractor hood, enabling effective odor removal with reduced installation space requirements.
Implementation Method 1
an odor filter element (21) which can be held in the filter holder (220)
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The filter support (22) has input surface for the introduction of air into the filter support. The filter support has filter holder (220) for filter element (21), which is arranged in a state inclined towards the input surface. The angle between the inlet openings of the two filter holders is less than 90 [deg] . An independent claim is included for fume extractor hood.