An electrostatic spray device, comprising: an electrostatic spray main body capable of containing a liquid containing portion of a cartridge, the cartridge including the liquid containing portion that contains a liquid and a spray unit that sprays the liquid, the electrostatic spray device spraying the liquid by the electrostatic spray main body applying a voltage to the liquid, in which the cartridge has conductivity in at least one portion of the liquid containing portion, and the electrostatic spray main body includes a high-voltage generating unit which generates a high voltage, and a contact portion which is in contact with the portion having conductivity of the liquid containing portion contained in the electrostatic spray main body and applies the high voltage to the liquid in the liquid containing portion through the portion having conductivity.

An electrostatic spray device, comprising: an electrostatic spray main body capable of containing a liquid containing portion of a cartridge, the cartridge including the liquid containing portion that contains a liquid and a spray unit that sprays the liquid, the electrostatic spray device spraying the liquid by the electrostatic spray main body applying a voltage to the liquid, in which the cartridge has conductivity in at least one portion of the liquid containing portion, and the electrostatic spray main body includes a high-voltage generating unit which generates a high voltage, and a contact portion which is in contact with the portion having conductivity of the liquid containing portion contained in the electrostatic spray main body and applies the high voltage to the liquid in the liquid containing portion through the portion having conductivity.

An atomizer nozzle system, in particular for an electrohydrodynamic atomizer (1), wherein a nozzle cap (40) comprises a plurality of nozzles (10, 11, 12) and, in order to form a nozzle (10, 11, 12) comprises at least one nozzle opening (21, 22, 23), at least one nozzle channel and at least one nozzle socket, wherein the nozzle cap is arranged on at least one carrier and wherein the carrier comprises a nozzle connector for each nozzle socket, wherein the nozzle cap is arranged on the carrier in a releasably fastened manner.

An atomizer nozzle system, in particular for an electrohydrodynamic atomizer (1), wherein a nozzle cap (40) comprises a plurality of nozzles (10, 11, 12) and, in order to form a nozzle (10, 11, 12) comprises at least one nozzle opening (21, 22, 23), at least one nozzle channel and at least one nozzle socket, wherein the nozzle cap is arranged on at least one carrier and wherein the carrier comprises a nozzle connector for each nozzle socket, wherein the nozzle cap is arranged on the carrier in a releasably fastened manner.

In an electrostatic atomization coating apparatus including a nozzle head including a plurality of coating material ejection ports; a coating material chamber that is provided inside the nozzle head and to which a coating material is supplied via a coating material supply path, each of the coating material ejection ports being in communication with the coating material chamber via an individual branch coating material path; and a voltage application device that provides a potential difference between the nozzle head and an object to be coated, the coating material ejected from each of the coating material ejection ports via the coating material supply path, the coating material chamber, and the branch coating material path being brought into a charged state through application of a voltage by the voltage application device, an open/close valve device that opens and closes all of the branch coating material paths, or opens and closes a specific subset of a plurality of branch coating material paths out of all of the branch coating material paths is provided. Thus, it is possible to prevent external air from entering the nozzle head, and the coating material from leaking to the outside of the nozzle head.

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.

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.

A system and method for providing an electrostatic sprayer nozzle assembly for dispensing a fluid in a stream of charged particles. The nozzle assembly includes an interior chamber, a nozzle opening on the rear side for receiving a nozzle therethrough, an electrode within the interior chamber for providing a charge to the fluid particles, and a visor connected to an outer surface configured to redirect lost fluid that collects on the outer surface of the assembly back into the fluid stream.

A system and method for providing an electrostatic sprayer nozzle assembly for dispensing a fluid in a stream of charged particles. The nozzle assembly includes an interior chamber, a nozzle opening on the rear side for receiving a nozzle therethrough, an electrode within the interior chamber for providing a charge to the fluid particles, and a visor connected to an outer surface configured to redirect lost fluid that collects on the outer surface of the assembly back into the fluid stream.

A spray system for spraying a fluid, the spray system including a tank for holding the fluid; and a sprayer including a fluid conductor, a fluid mover, at least one first nozzle and a second nozzle, the fluid conductor including an inner diameter, a first end configured to be connected to the tank, a second end configured to be selectively connected to one of the at least one first nozzle and a second nozzle, wherein the second nozzle including a through opening at least about the same size as the inner diameter, wherein the fluid mover is configured to draw the fluid from the tank through one of the at least one first nozzle to create a spray of the fluid and the second nozzle to return at least a portion of the fluid to a storage tank.