Filter unit for air cleaning device, and air cleaning device
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Solution Overview
Problem
Existing air cleaning devices, particularly vapor extractors in recirculating mode, face challenges with low filter efficiency due to the spatial separation of grease filters and odor filters, which leads to incomplete removal of cooking vapors and odors in enclosed spaces.
Innovation Solution
A compact filter unit with an integrated odor filter, utilizing air-permeable high-voltage and counter electrodes arranged in series, generates a plasma wall for efficient odor neutralization and combines with an electrostatic filter to remove particles, thereby enhancing overall air cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If plasma filters are used for odor neutralization, then odor reduction efficiency is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the plasma generation function and electrostatic filtration function into a single integrated filter unit. The housing contains both the plasma generator (with electrodes) and the electrostatic filter media, allowing simultaneous odor neutralization and particle filtration in one compact device, thereby reducing overall system complexity and space requirements while maintaining high odor reduction efficiency
Solution Approach 2:
The filter unit performs multiple functions simultaneously: odor neutralization through plasma generation, particle filtration through electrostatic media, and grease filtration. This multi-functional design eliminates the need for separate plasma filters and electrostatic filters, reducing device complexity while achieving comprehensive air cleaning performance
2Object-affected harmful factors
If plasma filters are used for odor neutralization, then odor reduction efficiency is improved, but space requirements increase
Solution Approach 1:
The patent combines the plasma generation function and electrostatic filtration function into a single integrated filter unit. The housing contains both the plasma generator (with electrodes) and the electrostatic filter media, allowing simultaneous odor neutralization and particle filtration in one compact device, thereby reducing overall system complexity and space requirements while maintaining high odor reduction efficiency
Solution Approach 2:
The electrostatic filter media is positioned within the housing to utilize the space between the electrodes of the plasma generator. This nested arrangement allows the electrostatic filter to occupy the available volume efficiently, maximizing the use of space and reducing the overall volume required for the filter unit while maintaining both plasma generation and electrostatic filtration functions
3Object-affected harmful factors
If adsorbers and plasma filters are used separately, then odor filtration is achieved, but service life is reduced due to inability to clean
Solution Approach 1:
The integrated filter unit allows the electrostatic filter media to be removed and cleaned separately from the plasma generation components. The electrostatic filter can be washed to remove accumulated particles and grease, restoring its filtration capacity. This recoverability extends the service life of the filter unit compared to disposable adsorbers or non-cleanable plasma filters
Solution Approach 2:
The filter unit is designed with separable components: the electrostatic filter media can be removed independently from the housing and plasma generation system. This segmentation allows the electrostatic filter to be cleaned and maintained separately, extending its service life while the plasma generation components remain in place for continuous odor neutralization
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 integrated filter unit achieves high odor reduction efficiency with reduced space requirements, extending the service life by allowing for cleaning and maintenance, and requiring less energy input compared to traditional plasma systems.
Implementation Method 1
the odor filter comprises at least one air-permeable high-voltage electrode and at least one air-permeable counter electrode, each of these forming a free surface, and that the at least one air-permeable high-voltage electrode and the at least one air-permeable counter electrode are arranged one behind the other in the direction of flow
Implementation Method 2
These include expanded metal filters, perforated sheet filters, baffle filters, nonwoven fabrics (fibrous material), edge suction filters, sintered plastics and other porous media or the like. All of these filter media use mechanical separation mechanisms for filtering, such as the diffusion effect, blocking effect and particularly the inertia effect
Data Source
AI summary
A filter unit for an air cleaning device includes an odor filter configured for odor neutralization and embodied as a device for plasma generation. The odor filter includes an air-permeable high-voltage electrode and an air-permeable counter electrode arranged behind one another in a direction of flow of air. Each of the air-permeable high-voltage electrode and the air-permeable counter electrode is formed by a panel element.