Electrostatic spray process and apparatus

Details Electrostatic spray process and apparatus Electrostatic spray process and apparatus

B - Operations, Transporting

05

B

32/17

B05B 17/06 (2006.01) B05B 5/025 (2006.01) B05B 5/08 (2006.01)

Patent

CA 2018551

An electrostatic liquid spraying apparatus has a sprayhead comprising a pair of atomising edges extending side-by-side, liquid feed means to each of the atomising edges and a plurality of field intensifying electrodes extending lengthwise of the atomising edges. A pair of the field intensifying electrodes are associated with each atomising edge with one disposed on either side thereof and forwardly of the associated atomising edge. Electric power supply means impose a potential difference between said atomising edges and said electrodes. In order to achieve satisfactory spraying: a) the spacing between the atomising edges is in the range, 20-300 mm. b) the spacing between each of the electrodes and its associated atomising edge is not less than 3 mm. and c) The measurable potential difference between the conductors through which the potential difference is imposed between the atomising edges and the electrodes is in the range 1-3 KV per mm. of the spacing of said electrodes from the atomising edges.

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