Heating, ventilation and air conditioning unit with automatically controlled water spray air purification system

Abstract From the Canadian patent

An automatically controlled water spray air purification system is incorporated in a heating, ventilating and air conditioning unit serving a conditioned interior building space. The purification system is operative to receive a portion of the return air that would normally be flowed through the unit mix the, received return air with a quantity of outside ventilation air purify the return air/outside air mixture using water sprayed from a sump portion of the purification system and flow the purified, air into the unit for mixture therein with the balance of the return air being flowed therethrough to the conditioned space. Damper structures on the unit and its associated air purification …