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Electronic air purifiers use electrical fields to trap charged pollutant and particles.
There are 3 different methods:
- electrostatic precipitators
- charged-media filters.
- negative ionizer
How does it work?
As air passes through the purifier, the air-borned particles and pollutants are
deliberately ionized (charged) before the collection process, thus resulting
in a higher cleaning efficiency.
In electrostatic precipitators, these particles are collected on a series of flat plates.
Whereas, in charged-media filter devices,
air-borned pollutants and particles are collected on the media-charged fibers filter.
Older ion generators use static charges (negative ions) to remove particles from
indoor air. They act by charging the particles in a room, so they that they are attracted
to walls, floors, table tops, draperies, occupants, etc.
Nowadays, modern electronic purifiers do not use negative ion generator to clean the air.
The prefered method is the electrostatic precipitators. However, most units will emit
negative ions for health purposes.
Other things to note ... Negative Ions
Today, electronic air purifiers are popularly known as "negative ionizers" or air
ionizers because
they replenish a room's supply of negative ions which are essential for health. The actual
cleaning and purifying of air is done via the electrostatic precipitators (the preferred method)
and media-charged filters.
Medical experts and researchers have long claimed that a room with high concentration of
negative ions promotes health, helps with sleep, depression, allergies, tension, exhaustion
and many other ailments.
This is the main reason negative air ionizers are becoming increasingly
popular in North America.
Many homeowners
have found them to be affordable, practical and effective in improving air quality and their
health. Many modern units are extremely quiet, compact, easy to maintain and without any
filters to replace.
You may want to read more about some of the published studies and research
on the health benefits of negative ions
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