Existing electric air purifiers applied to closed, indoor environments have to be closely monitored and controlled due to potential hazardous ozone emissions. Alternatively filter based purifiers have an issue of power losses owing to the raised pressure drop of filters as well as a difficulty in filter management.
Existing filter-based air purifiers require periodical filter replacements and can cause secondary pollutants such as bacteria re-generated from the filter. Electrostatic precipitators have an advantage of a low pressure drop, but require a high voltage to increase the collection efficiency of fine particles, but they may generate ozone which exceeds a recommended level in indoor air during powerful corona discharge.
Our proposed technology avoids issues faced by both kinds of technologies.
This technology adopts the principle of electrostatic precipitation with a low pressure loss and at the same time applies ultra-fine micro carbon fiber discharge electrodes of 5 - 10㎛ in diameter to provide uniform discharge even at the low applied voltages. It results in generation of little indoor harmful substances with ozone generation less than several ppb and no need for filter replacements which require additional costs and cause filter wastage.