Cleaning device for cleaning a gas
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Solution Overview
Problem
Conventional gas cleaning devices, such as filtration systems and ionizing filters, struggle to effectively remove particles, viruses, and bacteria from gases, particularly those smaller than 0.3 μm, and often produce harmful byproducts like ozone and nitrogen oxides during the cleaning process.
Innovation Solution
A cleaning device with a first electrode having tips or projections and a second electrode, generating an inhomogeneous electrostatic field to attract and repel contaminants, allowing for their removal without corona discharges, using a voltage source to ensure high efficiency and prevent the introduction of toxic substances into the cleaned gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If corona discharges are used to charge particles for electrostatic separation, then particle removal efficiency is improved, but harmful substances (ozone and nitrogen oxides) are produced
Solution Approach 1:
The patent extracts and eliminates the harmful corona discharge process from the particle separation system. Instead of using corona discharges to charge particles, the invention employs a unipolar ionization process that charges particles without producing ozone or nitrogen oxides, thereby removing the harmful byproduct generation while maintaining separation functionality
Solution Approach 2:
The patent changes the electrical parameters of the ionization process. By using controlled voltage levels and a different electrode configuration (without sharp points or edges that cause field enhancement), the system achieves particle charging through ionization without reaching the conditions necessary for corona discharge, thus preventing harmful substance formation while maintaining charging efficiency
2Quantity of substance
If conventional filters are used to remove particles from gas, then larger particles can be removed, but particles smaller than 0.3 μm cannot be effectively removed
Solution Approach 1:
The patent replaces the mechanical filtration system with an electrostatic field-based separation system. Instead of relying on physical pore structures that cannot capture sub-0.3 μm particles, the invention uses electric fields to charge and separate particles of all sizes, including those smaller than 0.3 μm, thereby extending the effective removal range to include previously uncapturable particles
Solution Approach 2:
The patent creates local electric field enhancements at controlled locations using specifically designed electrode geometries. The electrodes have controlled surface features that generate localized field regions for efficient particle charging, while the overall field distribution remains uniform enough to prevent corona discharge, achieving both effective particle charging and safe operation
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 device achieves a high removal efficiency of contaminants, including particles and viruses smaller than 0.1 μm, while preventing the formation of ozone and nitrogen oxides, as demonstrated by tests showing a cleanliness level of 99.99992% within half the usual time, without causing harmful pollution.
Implementation Method 1
a voltage source electrically connected to the first electrode and/or the second electrode, with the aid of which voltage source a voltage can be built up between the first electrode and the second electrode. Through the arrangement of the first electrode relative to the second electrode and the provision of the voltage source which generates a voltage between the electrodes, an inhomogeneous electrostatic field can be generated between the electrodes
Implementation Method 2
the at least one body has a surface with a plurality of tips and/or projections for generating an inhomogeneous electromagnetic field. an electric dipole is generated in the undesired constituents, for example in the form of particles, due to the imposed voltage at the tips and/or projections of the body arranged on the first electrode
Implementation Method 3
Through the inhomogeneous electric field, the undesired constituents are preferably moved in the direction of the first electrode (dipole in the inhomogeneous electric field). Through the attraction of the particles to the first electrode, the particles can attach to the first electrode
Data Source
AI summary
The invention relates to a cleaning device for cleaning a gas, in particular air, comprising: a first electrode which is populated with at least one element, preferably a plurality of elements, said at least one element having a surface with a plurality of tips and/or protrusions in order to generate a non-homogeneous electromagnetic field, a second electrode which preferably lies opposite the first electrode, and a voltage source which is electrically connected to the first electrode and/or the second electrode and by means of which a voltage can be built up between the first electrode and the second electrode.