Electrostatic Air Filter Eliminates Consumable Replacement
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Solution Overview
Problem
Conventional filter materials in air filtration systems become ineffective and require frequent replacement, leading to high consumption costs and operational inconvenience, with existing regeneration methods often requiring complex systems and high power consumption.
Innovation Solution
A filter device utilizing a high voltage electric field with an ionization source and discharging device to ionize and remove pollutants, preventing their diffusion back into the system, thereby reducing or eliminating the need for consumable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filter materials are used for air filtration, then filtration function is provided, but the filter materials become ineffective and require frequent replacement, leading to high consumption costs and operational inconvenience
Solution Approach 1:
The patent replaces the mechanical filtration system (filter materials physically blocking particles) with an electrostatic field system. High voltage electrodes create an electric field that attracts and captures particles, eliminating the need for consumable filter materials that must be physically replaced.
Solution Approach 2:
The patent changes the operating parameters by applying high voltage (electrical parameter) to create an electric field, transforming the filtration mechanism from passive mechanical blocking to active electrostatic attraction. This allows continuous operation without material consumption.
2Loss of substance
If filter materials are regenerated automatically by thermal treatment, then filter material replacement is avoided, but the gas passage system becomes complicated and power consumption for heating increases
Solution Approach 1:
The patent replaces the thermal regeneration system with an electrostatic filtration system. Instead of heating filter materials to regenerate them, the system uses high voltage electric fields to continuously attract and capture particles, eliminating both the need for regeneration and the associated high power consumption.
Solution Approach 2:
The patent extracts the filtration function from the consumable filter material and transfers it to the electrostatic field system. The electric field itself becomes the filtering mechanism, separating the filtration function from any material that would need regeneration.
3Loss of substance
If high voltage electric field is used to ionize and discharge pollutants, then consumable usage is reduced or eliminated, but the device complexity increases
Solution Approach 1:
The patent integrates multiple functions into the electrostatic field system: particle attraction, particle capture, and particle discharge all occur within the same high voltage field region. The discharging device serves both to remove captured particles and to maintain field efficiency, consolidating functions that would otherwise require separate components.
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 effectively reduces consumable costs by using a high voltage electric field to ionize and discharge pollutants, maintaining filtration efficiency with minimal consumable usage, suitable for trace detectors in ion mobility spectrometry applications.
Implementation Method 1
an ionization source provided in the electric field region to ionize the ionizable pollutants present in the air introduced from the air inlet
Implementation Method 2
the resultant ionized pollutants which will move towards both ends of the housing under the influence of the electric field
Implementation Method 3
a discharging device for discharging the ionized pollutants which have arrived at the ends of the housing out of the filter device
Data Source
Figure 1
AI summary
The present invention discloses a filter device. The filter device comprises a housing with an air inlet and an filtered air outlet; a high voltage electric field region provided between two ends of the housing, wherein the direction of the electric field is perpendicular to the direction along which the air is introduced into the housing; an ionization source provided in the electric field region to ionize the ionizable pollutants present in the air introduced from the air inlet and form the resultant ionized pollutants which will move towards both ends of the housing under the influence of the electric field; and a discharging device for discharging the ionized pollutants which have arrived at the ends of the housing out of the filter device. The present invention also relates to a filtering method of using the filter device, and a trace detector. The filter device can be used to ionize the ionizable interferents existed in the air, separate the ionized interferents from the other components of the air under the influence of the electric field, ,and discharge the interferent out of the filter device, thereby reducing the consumption of the consumables or even eliminating the need for consumables. The filter device in accordance with the present invention is applicable to a trace detector based on ion mobility technology for the detection of trace amounts of substances.