Device and method for electrostatically spraying a liquid
AssigneesCentre National De La Recherche Scientifique, Universite De Poitiers
InventorsChristophe Laurent Louste, Hubert Romat
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Abstract
A spray device includes a nozzle that forms a channel for supplying liquid to at least one opening for spraying the liquid outside the device, and, close to the opening, a first and a second electrode arranged in such a way as to inject electric charges into the liquid. The edge of the opening includes, on one side of the channel, at least one projecting end of the first electrode that projects into the channel and is to be brought into contact with the liquid, and on the other side of the channel, an electrically insulating nozzle body in which the second electrode is embedded adjacently to the first electrode, in such a way that the intensity of the electrostatic field in the or each projecting end is maximized.
Claims17
A device for spraying, a liquid that can be electrically insulating at least through electrostatic forces, the device being designed to atomize this liquid or to control the beat of the oscillations thereof, this device comprising a nozzle which forms a channel for feeding the liquid to at least one orifice for spraying said liquid out of the device and which incorporates, in proximity to this orifice, a first electrode and a second electrode configured to inject electric charges into the liquid, wherein the edge of this orifice comprises, on one side of the channel, at least one protruding end of the first electrode which protrudes into this channel and which is configured to be in contact with the liquid and, on another side of the channel, an electrically insulating nozzle body in which the second electrode is embedded adjacent to the first electrode, so that the intensity of the electrostatic field at said or each protruding end is maximized.
Dependencies are inferred from the claim text.