Patent ID: 7552914

Claim:
A humidifier configured for use within the plenum ( 1 ) of an existing heating system having an operational airflow therein, said humidifier comprising: (a) a humidity sensor ( 24 ) adapted to measure the humidity of air entering the heating system and to provide a humidity value signal; (b) a duty-cycle signal computed from the humidity value signal and a predetermined control profile; (c) a filtration system ( 11 ) adapted to filter suspended particles from an incoming water supply and to provide filtered water ( 6 ); (d) a low volume high pressure pump ( 12 ) adapted to accept the filtered water and to provide pressurized water ( 7 ) at a constant high pressure; (e) a constant speed motor ( 13 ) mechanically connected to the pump and adapted to drive said pump in response to the duty-cycle signal computed from the humidity sensor; (f) a wand pipe ( 16 ) extending into the plenum and adapted to accept the pressurized water, wherein said wand pipe further comprises (i) a plurality of exit nozzles ( 17 ), each including a precision orifice adapted to atomize said pressurized water into a mist and to inject said mist into the operational airflow; and (g) wherein the diameter of each precision orifice is sized in conjunction with the constant speed of the motor to provide a precise constant volume flow of atomized water.