Patent ID: 8778272

Claim:
An air purification system comprising: a Particle Phase Pollutant (PPP) treatment section having: an air inlet and an air outlet; a particle removal filter; and a blower to draw air from the air inlet of the PPP treatment section to pass through the particle removal filter and exit through the air outlet of the PPP treatment section; a Gas Phase Pollutant (GPP) treatment section installed at a downstream position of the particle removal filter of the PPP treatment section, the GPP treatment section having: an air inlet and an air outlet; a gas removal filter with high filter air flow resistance; and a blower located at a downstream position of the gas removal filter to draw air from the air inlet of the GPP treatment section to pass through the gas removal filter and exit through the air outlet of the GPP treatment section; a particle phase pollutant sensor that detects the concentration of particle phase pollutants in the surrounding environment; a gas phase pollutant sensor that detects the concentration of gas phase pollutants in the surrounding environment; and at least one central processing unit; wherein: airflows of the GPP treatment section and PPP treatment section are independently controlled and directed by their respective blower; the PPP treatment section and the GPP treatment section are disposed such that a portion of the air exiting the air outlet of the PPP treatment section via the particle removal filter is directed through the air inlet of the GPP treatment section; and the speed of each of the blowers for the GPP treatment section and the PPP treatment section is controllable by the at least one central processing unit, wherein, the at least one central processing unit is operable to control the speed of the blower for the PPP treatment section based on the concentration of the particle phase pollutants as detected by the particle phase pollutant sensor, the at least one central processing unit is operable to control the speed of the blower for the GPP treatment section based on the concentration of gas phase pollutants as detected by the gas phase pollutant sensor, and the at least one central processing unit is configured to slow or turn off the blower for the GPP treatment section when the concentration of particle phase pollutants exceeds a pre-established threshold value, as detected by the particle phase pollutant sensor.