A discharge device includes a discharge electrode, a counter electrode that faces the discharge electrode in a first direction, and voltage application unit that applies an application voltage between the discharge electrode and the counter electrode. The counter electrode includes a dome-shaped electrode having a recessed inner surface recessed to a side opposite to the discharge electrode in the first direction, and a protruding electrode that protrudes in a second direction intersecting the first direction from an opening edge of an opening of the dome-shaped electrode, the opening being provided at an end opposite to the discharge electrode. The discharge device forms a discharge path having at least partial dielectric breakdown between the discharge electrode and the protruding electrode, when the discharge occurs. The discharge path includes a first dielectric breakdown region generated around the discharge electrode and a second dielectric breakdown region generated around the protruding electrode.

An electrostatic spraying apparatus according to an embodiment of the present invention is an electrostatic spraying apparatus that releases a liquid from a nozzle of a liquid sprayer in a charged state by an electrostatic force generated by application of a voltage and sprays the liquid to an object to be coated, in which the liquid sprayer includes a head having a nozzle group that includes a plurality of nozzles, and an external electrode disposed on an outer side of the nozzle group.

A system includes an electrostatic tool having a cascade that includes electrical components configured to convert a first voltage from an incoming alternating current into an outgoing second voltage at a direct current and a shell configured to cover the electrical components. The shell radially conforms to the electrical components.

A size-selective aerosol nozzle that includes an impactor body with an internal enclosed sidewall spanning in a directional longitudinally from a distal end of a distal spray end to a central sidewall terminal end and defining a central spray channel and a fluid segregation member. The segregation member may include an internal enclosed sidewall defining at least one liquid removal channel spanning laterally away from a central spray channel, defining a second aerosol discharge outlet in fluid communication with the central spray channel, and spans into the central spray channel to bifurcate the central spray channel into the liquid removal channel and an aerosol discharge channel. The fluid segregation member has an inner surface defining the liquid removal channel and is in an overlapping configuration with the internal enclosed sidewall to mechanically segregate emitted aerosol spray from the first aerosol discharge outlet of a portable hand-held aerosol spray assembly.

A system and method for shaping and/or directing a spray stream includes electrostatically charging a spray stream by exposing fluid to be sprayed to an electrical field within a fluid sprayer to create an electrostatically charged spray stream, and then creating an electrical field between secondary electrodes externally to the fluid sprayer such that the electrostatically spray stream is shaped and/or redirected as it passes through the electrical field.

An electrostatic atomizing apparatus including: a liquid nozzle portion (20) for releasing a liquid column (38) into an open space; a liquid conduit portion (18) for introducing pressurized liquid into the liquid nozzle portion; a liquid-side electrode (16) disposed inside the liquid conduit portion for coming into contact with the liquid; a gas conduit portion (36) made of an insulation material and having a gas nozzle portion (24) disposed around the liquid nozzle portion for converting the liquid column into fine particles to generate an atomized stream by making a gas stream from the gas nozzle portion act at an atomization point P of the liquid column released into the open space from the liquid nozzle portion; and a ring-shaped induction electrode (26) disposed around the atomization point located in the open space and having an electrode conductor (28) made of a conductive material and coated with an insulation material.

A method of forming a material structure from structural units contained within a liquid solution in a spray head is described. The liquid solution includes a solvent and a solute, the solute comprising a plurality of the structural units, the structural units including monomer units, oligomer units, or combinations thereof. The method comprises forming droplets of the liquid solution including the structural units, and spraying the droplets on a substrate, thereby substantially increasing the reactivity of the structural units within the droplets relative to the structural units within the liquid solution in the spray head. The increase in reactivity can result from the droplets containing an excess of a particular ion, the ion excess resulting from a voltage applied to conductive walls of the device which dispenses the droplets. The material structure is then formed on the substrate from the more highly reactive structural units within the droplets.

The present disclosure relates to methods and system for disinfecting surfaces within a volumetric space by forming peracids in a reaction layer in situ directly on the surfaces to be disinfected. Particularly, a peroxide compound and an organic acid are sequentially dispersed into the volumetric space, preventing peracids from being formed until the two reactants contact each other on the surface to be disinfected. In some embodiments, any of the dispersed aqueous compositions can optionally be electrostatically charged. Additionally, a system for sequentially dispersing the peracid reactant compounds by electrostatic spraying is provided.

A method of forming a material structure from structural units contained within a liquid solution in a spray head is described. The liquid solution includes a solvent and a solute, the solute comprising a plurality of the structural units, the structural units including monomer units, oligomer units, or combinations thereof. The method comprises forming droplets of the liquid solution including the structural units, and spraying the droplets on a substrate, thereby substantially increasing the reactivity of the structural units within the droplets relative to the structural units within the liquid solution in the spray head. The increase in reactivity can result from the droplets containing an excess of a particular ion, the ion excess resulting from a voltage applied to conductive walls of the device which dispenses the droplets. The material structure is then formed on the substrate from the more highly reactive structural units within the droplets.

The invention concerns an aerosol charger having electrical discharge comprising: a body (2); an ion source (3) comprising two electrodes (31, 32); the charger being characterized in that the body (2) and at least a first electrode (32) of the ion source (3) are aligned along a same axis of longitudinal symmetry (AA) of the charger, the body (2) surrounding the first electrode (32) in such a way as to define an area (5) for an aerosol to flow between a space defined between the body (2) and the first electrode (32); and in that the first electrode (32) comprises a hole (321) in communication with the area (5) for the aerosol (Ae) to flow, the hole (321) being designed to allow ions formed at the ion source (3) to pass therethrough in order for them to mix with an aerosol (Ae) flowing in the area (5) for the aerosol (Ae) to flow.