The invention discloses an
air purification device. The
air purification device comprises a shell, a high-
voltage electrostatic dust removal unit and an
air blower; the dust removal unit comprises an
ionization unit and a dust collecting unit located at a downstream position of the
ionization unit; a first gap and a first working
voltage are set between the positive
electrode and the negative
electrode of the
ionization unit, wherein the first working
voltage is set to be capable of
ionizing particles in air passing through the ionization unit, and the first gap is set to be not less than the insulation distance of the air and enable the ionized particles to pass through the ionization unit; and a second gap smaller than the first gap and a second working voltage smaller than the first working voltage are set between the positive
electrode and the negative electrode of the dust collecting unit, wherein the second gap and the second working voltage are set to enable the ionized particles to be adsorbed on the electrodes of the dust collecting unit so as to achieve the dust removal function. According to the
air purification device, the purification efficiency can be ensured, and the generation amount of
ozone can be minimized. The invention further discloses an air purification method.