ELECTROSTATIC SPRAY DEVICE

摘要

An electrostatic spraying device (5) which is configured and disposed to electrostatically charge and dispense a product from a supply to a point of dispersal. The electrostatic spraying device (5) has a reservoir configured to contain the supply of product and a nozzle to disperse the product. The nozzle being disposed at the point of dispersal. The nozzle has an exit orifice. A channel is disposed between the reservoir and the nozzle, wherein the channel permits the electrostatic charging of the product upon the product moving within the channel. A positive displacement mechanism is used to move the product from the reservoir to the nozzle. A power source (20) supplies an electrical charge. A high voltage power supply (42), high voltage contact, and high voltage electrode are used. A portion of the high voltage electrode being disposed between the reservoir and the nozzle is used to electrostatically charge the product within the channel at a charging location. A distance between the charging location and the nozzle exit orifice is governed by the following relationship: Vo / d lt; 100,000, wherein Vo equals; an output voltage of said high voltage power supply and d equals; linear distance between the charging location and said nozzle exit orifice. A moveable electrode cover may be used to substantially conceal the high voltage contact when the disposable cartridge is removed from the device. The high voltage electrode may recess when the disposable cartridge is removed from the device or resurface when the disposable cartridge is inserted into the device.