Plate-Type Bipolar Ion Generator for Alternating Ion Air Purification
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Solution Overview
Problem
Existing air purification technologies, such as unipolar ionizers, are ineffective in eliminating odors and improving air quality due to their inability to generate bipolar ions, leading to incomplete purification and potential particle reformation.
Innovation Solution
A bipolar ionizer with a plate-type structure comprising a thermally conductive sheet, porous emitter plates, dielectric barrier plates, and ground plates creates a controlled electric field gradient to generate alternating bipolar ions, effectively improving indoor air quality by exciting oxygen molecules and degrading organic volatiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If unipolar ionization is used for air purification, then dust collection effect is improved, but odor elimination capability deteriorates
Solution Approach 1:
The device is divided into multiple independent discharge electrodes (positive and negative) arranged in alternating patterns, allowing simultaneous generation of both positive and negative ions through separate discharge channels, thereby achieving both dust collection and odor elimination functions
Solution Approach 2:
The patent combines multiple discharge electrodes with different polarities within a single device structure, merging the functions of positive ion generation (for dust collection) and negative ion generation (for odor elimination) into one integrated air purifier
2Object-generated harmful factors
If double needle tip bipolar ionizer is used, then odor degradation capability is improved, but device complexity increases
Solution Approach 1:
The discharge electrodes use local sharp-pointed structures (needle tips or sharp edges) only at the discharge surfaces where ion generation is needed, while the main body of the electrodes can be simpler in form, thus achieving high ionization efficiency without proportionally increasing overall device complexity
Solution Approach 2:
The patent transitions from a single-point needle tip discharge to a planar array of multiple discharge electrodes, distributing the ionization function across a two-dimensional surface, which maintains effective odor degradation while reducing the concentration of complexity in any single location
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 bipolar ionizer enhances air purification by capturing smaller inhalable particles and degrading gaseous molecules, such as formaldehyde and ammonia, without the need for additional filters, while also effectively killing bacteria, thus providing a comprehensive air quality improvement.
Implementation Method 1
a bipolar ionizer for air purification, which is a plate-type structure comprising a substrate with a thermally conductive sheet, a first porous emitter plate, a second porous emitter plate... an electric field gradient formed between thermally conductive sheet and the first porous emitter plate is smaller than an electric field gradient formed between the first porous emitter plate and the first ground plate
Implementation Method 2
When the emitted electrons reach a certain rate, the oxygen molecules can be excited, converting them to ionic state... a part of the electrons escapes from the surface of the dielectric barrier plate and meets the indoor air molecules
Implementation Method 3
the energy of the gas and particles colliding with each other participate in the process of oxidative decomposition... degrading gaseous molecules, such as formaldehyde and ammonia
Implementation Method 4
an electric field gradient formed between thermally conductive sheet and the first porous emitter plate is smaller than an electric field gradient formed between the first porous emitter plate and the first ground plate
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to an ionizer, in particular to an alternating bipolar ionizer, and in particular to an alternating bipolar ionizer for air purification. It is a plate-type structure consisting of a substrate with a thermally conductive sheet, a porous emitter plate, a dielectric barrier plate, and a porous ground plate with ion extraction mechanism all of which are stacked together in sequence. According to the above technical solution, the ground plate and the emitter plate with the ion extraction structure form an electric field with a precise size, and the electrons of the emitter plate are led out of the dielectric barrier plate on a grounding side of the electric field. A part of the electrons meets the grounding pole plate and flows into the ground plate to form a current, and a part of the electrons escapes from the surface of the dielectric barrier plate and meets the indoor air molecules. When the escaped electrons reach a certain rate, the oxygen molecules can be excited to be an ionic state, and the air quality is improved. When AC high-voltage current is input, the bipolar ions are generated alternately, so that a bipolar ionized gas flow can be injected into the air to effectively improve the air quality.