Patent ID: 7729101

Claim:
An ionizing blower with air ion monitoring comprising: an ionizer chassis; a high voltage power source; an air mover disposed within said chassis which creates air flow through said ionizing blower; ion emitters positioned in the path of said air flow wherein voltage on said ion emitters is determined by said high voltage power source; a measurement device including a measurement channel that is only open at entrance and exit segments wherein the measurement channel includes an insulative interior surface to prevent measurement interference from outside ion migration or from through-the-wall leakage currents, a grounded conductive exterior surface to prevent static charge buildup around said measurement channel and to prevent electrostatic field transmission through walls of said measurement channel, a first electrode which receives voltage from a power supply, and a second electrode which couples to a low current amplifier, air sampling device that receives air ions from a high pressure side of said air mover, and connects to the entrance segment of said measurement channel, and an air exit device that returns measured air to a low pressure side of said air mover, and connects to the exit segment of said measurement channel; a controller that generates control signals to said power supply to provide predetermined voltages to the first electrode, receives information from the low current amplifier, and provides a feedback signal to said high voltage power source to adjust voltage on said emitters.