Provided is a hand-held type electrostatic spray device (1) spraying an electrically charged liquid, the electrostatic spray device (1) comprising: a voltage source; a needle-shaped electrode (53: a base electrode) for electrically charging the liquid to which a voltage is applied from the voltage source and which includes a linear tip portion; a second bottom portion (32: an additional electrode) of a second electrode member (3) to which a voltage is applied from the voltage source; and a conductor (6) which is electrically isolated from the second bottom portion (32) and the needle-shaped electrode (53) and is disposed on a spray side of the liquid from the second bottom portion (32), at least a part of the conductor (6) overlapping with the second bottom portion (32) in a direction orthogonal to a spray direction of the liquid.

It is disclosed an apparatus (2) for precipitation of water, comprising a plurality of spraying nozzles (4) for ejecting droplets (6); at least one insulated charging electrode (36), arranged adjacent to the plurality of spraying nozzles (4), for ionizing the droplets (6), wherein the charging electrode (36) is connected to a high-voltage direct current power supply (10). Further, it is disclosed a method for operating an apparatus (2) for precipitation of water, wherein the apparatus (2) is operated in at least one of the following modes: simultaneous operation of the plurality of spraying nozzles (4) for ejecting droplets (6) and of the at least one insulated charging electrode (36); operation of the insulated emitter electrode (8) alone; intermittent operation of the plurality of spraying nozzles (4), the insulated charging electrode (36) and the insulated emitter electrode (8), or operation of the plurality of spraying nozzles (4), the insulated charging electrode (36) and the insulated emitter electrode (8) at the same time.

A spraying device for producing a spray of particles in a carrier gas at ambient pressure, includes a storage volume for a liquid substance; at least one nozzle having an inlet and an outlet, the nozzle inlet fluidly communicating with the storage volume; a counter electrode; an electric supply coupled between the at least one nozzle and counter electrode for providing a first potential and create a first electric field between the nozzle outlet and the counter electrode. The device further includes at least one discharge electrode coupled to the electric supply for providing a second potential between the discharge electrode and the counter electrode, the polarity of the second potential being opposite to the polarity of the first potential. The at least one nozzle and the at least one discharge electrode are arranged adjacent and parallel to each other and facing the counter electrode from a substantially same direction.

An electrostatic spray nozzle assembly is described that includes an induction ring and a fluid tip. The induction ring generates an electrical field for inducing an electrical charge on droplets of a feedstock liquid from the fluid tip that pass through an opening of the induction ring. The induction ring is electrically coupled to an electrical induction field source via a first conductive path provided by conductive surfaces of: a nozzle head holding the induction ring, and a purge gas tube holding the nozzle head. Feedstock flowing through the fluid tip is electrically coupled to a charge carrier source via a second conductive path provided by at least a conductive surface of a fluid tube coupled to the fluid tip. The first conductive path and the second conductive path are electrically isolated by an insulating barrier.

An aerosol-generating device is provided, including: a first storage portion; a first liquid aerosol-forming substrate contained within the first storage portion; an electrospray device to generate a first aerosol from the first liquid aerosol-forming substrate, the electrospray device including a nozzle to receive the first liquid aerosol-forming substrate from the first storage portion, and a voltage circuit including a circuit ground, the voltage circuit to apply a voltage difference between the first liquid aerosol-forming substrate and the circuit ground; a second storage portion; a second liquid aerosol-forming substrate contained within the second storage portion; a heater to heat second liquid aerosol-forming substrate from the second storage portion; and a mixing chamber in fluid communication with the nozzle and the heater, the heater being downstream of the nozzle. A method of generating a mixed aerosol by the aerosol-generating device is also provided.

The present invention provides an electrostatic spraying device and an electrostatic spraying method. The electrostatic spraying device includes: a high-voltage electrostatic generator configured for generating high-voltage static electricity and including a positive output terminal and a negative output terminal; a charging electrode connected to the positive output terminal or the negative output terminal of the high-voltage electrostatic generator and configured for directly contacting a liquid to be sprayed and applying electrostatic charges to the liquid to be sprayed; and an ionizing emitting electrode connected to the negative output terminal or the positive output terminal of the high-voltage electrostatic generator and configured for ionizing the surrounding air to realize an ionizing grounding.

A system can include a reservoir configured to hold working material, a decontamination module configured to remove contaminants from the working material, a flow control mechanism configured to regulate working material flow between the reservoir and the decontamination module, and a manifold fluidly connecting the reservoir to the decontamination module.

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 atomizing apparatus includes: a liquid nozzle portion for releasing a liquid column into an open space; a liquid conduit portion for introducing pressurized liquid into the liquid nozzle portion; a liquid-side electrode disposed inside the liquid conduit portion for coming into contact with the pressurized liquid; a gas conduit portion made of an insulation material and having a gas nozzle portion 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 of the liquid column released into the open space from the liquid nozzle portion; and a ring-shaped induction electrode disposed around the atomization point located in the open space and having an electrode conductor made of a conductive material and coated with an insulation material.

A voltage application device includes a voltage application circuit. The voltage application circuit applies application voltage between discharge electrode and counter electrode which face each other with a clearance left from each other to generate a discharge. The voltage application device forms discharge path partially and dielectrically broken between discharge electrode and counter electrode when a discharge is generated. Discharge path includes first dielectric breakdown region formed around discharge electrode, and second dielectric breakdown region formed around counter electrode.