Ventilation device for ventilation of a living space
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Solution Overview
Problem
Ventilation devices for home ventilation face issues with filter clogging leading to increased energy consumption and maintenance costs due to short service life of fine filters, and leakage currents caused by the absence of effective filter seals.
Innovation Solution
A ventilation device with a filter device having two zones, where the second zone is more flexible and contacts the filter holder for sealing, allowing easier installation and removal while maintaining a high filter effect, and potentially providing a sealing function to reduce leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fine filter is used to filter outside air, then the filter effect is improved, but the service life of the filter decreases due to clogging
Solution Approach 1:
The filter device is divided into two functional zones: a first zone with a fine filter for high filtration efficiency and a second zone with a coarse filter for pre-filtration and sealing. This segmentation allows the fine filter to focus on filtration while the coarse filter handles larger particles and provides structural support for sealing, extending the service life of the fine filter.
Solution Approach 2:
The second zone with the coarse filter acts as an intermediary between the outside air and the fine filter in the first zone. It pre-filters the air and provides a sealing function, reducing the load on the fine filter and preventing direct contact with unfiltered particles, thereby extending its service life.
2Reliability
If a filter seal is installed to prevent leakage currents, then the filter effect is improved, but the installation and removal of the filter becomes more difficult
Solution Approach 1:
The second zone incorporates a flexible sealing element that can deform during insertion and removal. This flexibility allows the seal to conform to the filter holder geometry for effective sealing while enabling easy installation and removal without requiring complex fastening mechanisms.
Solution Approach 2:
The sealing element changes its physical parameters (flexibility and deformation) during the installation and operation cycle. During insertion, it deforms to accommodate the filter holder; during operation, it maintains constant contact for sealing; during removal, it deforms again to facilitate easy extraction.
3Productivity
If the pumping capacity is increased to overcome higher pressure drop from clogged filters, then the ventilation performance is maintained, but the energy consumption increases
Solution Approach 1:
The second zone with the coarse filter performs preliminary filtration of larger particles before air reaches the fine filter. This pre-action reduces the rate of clogging of the fine filter, maintaining lower pressure drop over time and reducing the need for increased pumping capacity to maintain ventilation performance.
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 extends the service life of the fine filter, reduces maintenance costs, and ensures efficient operation by providing a better filter effect and sealing, thus minimizing energy consumption and leakage.
Implementation Method 1
the second zone contacts the filter receptacle during insertion and in the inserted state... providing a sealing function to reduce or even avoid leakage flows past the filter device
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a ventilation device (1) for ventilating a living space (2), comprising at least one flowable duct (3), at least one filter holder (4) and at least one flowable filter assembly (5, 6, 7), wherein the filter assembly (5, 6, 7) can be inserted at least partially into the filter holder (4) such that, in the inserted state, it spans a flowable cross-section of the duct (3), characterized in that the filter assembly (5, 6, 7) has at least one first zone (8) and at least one second zone (9) that differs from it, wherein the second zone (9) contacts the filter holder (4) during insertion and in the inserted state, and wherein the second zone (9) is designed with greater flexibility than the first zone (8).