초록 ▼

A balancing system for electrical A.C. air ionizers having at least one discharge electrode adjacently spaced from a proximity ground and connected to the high side of an A.C. high voltage power source includes (a) a capacitor interposed between each electrode and the high voltage source to maintain

A balancing system for electrical A.C. air ionizers having at least one discharge electrode adjacently spaced from a proximity ground and connected to the high side of an A.C. high voltage power source includes (a) a capacitor interposed between each electrode and the high voltage source to maintain a bias on each of the electrodes by blocking the D.C. current component across the circuit capacitance between the discharge electrodes and ground, and (b) a by-pass resistor across the circuit capacitance for providing a path to ground to bleed off excess bias so that equal positive and negative ion densities are generated during corona flow, the by-pass resistor having a resistance value which is determined by the parameters of the system\s corona characterisitics (including corona onset voltage and average current flow) that will provide a required equilibrium bias for producing the correct ratios of positive and negative ion currents as will balance the ion densities. Adjustable means are also provided for varying the by-pass resistance to compensate for changes in positive and negative ion flow that are caused by environmental factors and contamination.

대표청구항 ▼

In a balancing system for A.C. air ionizers having at least one discharge electrode adjacently spaced from a proximity ground and being connected to the high side of an A.C. power source; (a) a capacitor interposed between each point and the high voltage power source to maintain a bias on each of th

In a balancing system for A.C. air ionizers having at least one discharge electrode adjacently spaced from a proximity ground and being connected to the high side of an A.C. power source; (a) a capacitor interposed between each point and the high voltage power source to maintain a bias on each of the discharge electrodes by blocking the D.C. current component across circuit capacitance, (b) a variable by-pass resistor across the circuit capacitance for providing a path to ground for bleeding off excess bias so that equal positive and negative ion densities may be generated during corona flow, (c) a sensor for monitoring the positive and negative ion densities, and (d) circuit means to feedback information monitored by the sensor relating to ion densities in a closed loop to control mechanism for modifying the variable by-pass resistor in compensation of the variance from a neutral condition thereof.