Air purifier for improving removal performance of hazardous substance and virus in air

An air purifier for removing viruses, comprising:

• a body having an air inlet formed on a lower end thereof, an air outlet formed on an upper end thereof, and a flow path formed therein to move air upward;
• a pre-filter disposed in the flow path of the body;
• a modular type box-shaped cell type discharge device disposed in the flow path of the body to generate active species containing radicals so as to kill the viruses in the air and having a first electrode plate on which box-shaped cells with a given length are repeatedly connected vertically to one another, needle-shaped discharge electrodes inserted into the box-shaped cells, respectively, a second electrode plate for locating the needle-shaped discharge electrodes thereon, and an insertable and drawable box-shaped case open on top and underside thereof and coupled to the first electrode plate and the second electrode plate therein;
• a modular type dust collection device disposed in the flow path of the body, separately from the modular type box-shaped cell type discharge device, to collect the killed viruses and dust passing through the modular type box-shaped cell type discharge device, and having a discharge part with a linear discharge electrode for charging the killed viruses and dust passing through the modular type box-shaped cell type discharge device, a dust collection part for collecting the dust charged through the discharge part, and an insertable and drawable box-shaped case open on top and underside thereof and coupled to the discharge part and the dust collection part therein;
• an ozone removal device disposed in the flow path of the body to remove ozone generated from the modular type box-shaped cell type discharge device and/or the modular type dust collection device;
• and
• an air fan disposed in the flow path of the body.