The disclosure relates to a method for making charged nanoparticles, the method includes: providing a solution with a first solute; atomizing the solution into micro-scaled droplets; providing a charged electrode with at least one through-hole, a negative or positive electric potential is applied to the electrode; allowing the micro-scaled droplets to pass through the at least one through-hole.

Provided is an electrostatic spraying device capable of spraying liquid, such as paint, onto a sprayed object in a stable manner. The electrostatic spraying device of the invention releases liquid in an electrically-charged state from a nozzle using an electrostatic force generated by voltage application and thus sprays the liquid onto a sprayed object. The electrostatic spraying device comprises a nozzle head provided with the nozzle comprising a plurality of nozzles made of conductive or semiconductive material and a voltage application device configured to apply voltage between the nozzles and a heteropolar portion (sprayed object) that is heteropolar to the nozzles and thus generate the electrostatic force. The nozzles are so arranged that distance between axes L of at least adjacent nozzles increases with increasing distance from the nozzle head.

Control method and apparatus for a manual spray gun includes display that is disposed on the spray gun and that provides information to an operator about one or more coating operation parameters. An auxiliary trigger may be used that enables an operator to makes selections of one or more coating operation parameters. The display and auxiliary trigger together permit an operator to make selections without having to divert attention or field of view away from the spray gun or the coating area, especially during a coating operation.

Control method and apparatus for a manual spray gun includes display that is disposed on the spray gun and that provides information to an operator about one or more coating operation parameters. An auxiliary trigger may be used that enables an operator to makes selections of one or more coating operation parameters. The display and auxiliary trigger together permit an operator to make selections without having to divert attention or field of view away from the spray gun or the coating area, especially during a coating operation.

A light assembly coupled to a spray gun for spraying electrostatically charged coating material is disclosed. The spray gun includes a gun body comprising a barrel, a nozzle assembly extending from the barrel in a longitudinal direction, a voltage multiplier, and an actuator assembly configured to transition the voltage multiplier between an activated state and a deactivated state. The light assembly includes a light and circuitry electrically connected to the light. The circuitry is configured to supply electrical energy inductively obtained by the circuitry to the light when the voltage multiplier is in the activated state. The light assembly can also include a housing, a lens cover releasably attached to the housing, and a control member for changing a characteristic of the light.

A light assembly coupled to a spray gun for spraying electrostatically charged coating material is disclosed. The spray gun includes a gun body comprising a barrel, a nozzle assembly extending from the barrel in a longitudinal direction, a voltage multiplier, and an actuator assembly configured to transition the voltage multiplier between an activated state and a deactivated state. The light assembly includes a light and circuitry electrically connected to the light. The circuitry is configured to supply electrical energy inductively obtained by the circuitry to the light when the voltage multiplier is in the activated state. The light assembly can also include a housing, a lens cover releasably attached to the housing, and a control member for changing a characteristic of the light.

Embodiments for producing un-agglomerated, monodisperse droplets using a liquid sheet are provided. Nozzles with exit slit openings shape a spray liquid into a thin liquid sheet as the spray liquid exits from the slit opening. Stable multi-jet operation is achieved by including notches along the edge of the slit. The notches separate the liquid sheet into multiple jets to provide anchoring and stable multi-jet operation. In some embodiments, the liquid sheet electrospray techniques and nozzles described herein provide high mass throughput and versatile multiplexing spray systems while reducing the engineering effort and high manufacturing cost

The present invention discloses a water mist nano gasification conversion device, including a main body (1), an electronic high-voltage generator (5), a water inlet (3), a water supply tank (4), an electronic water mist spraying device (6) arranged in the water supply tank (4), and an atomization tube (2) arranged above the water supply tank (4). Water droplets and water mist sprayed by the electronic water mist spraying device (6) by using a negative electric field are blown into an electric field region which is arranged in the atomization tube (2) for ionization and decomposition. The nanoscale water mist generated by the device has the advantages of sterilizing and humidifying the air, improving air cleanliness and achieving skin moisturization.

An electrostatic atomizer for electrostatically coating a workpiece, in particular for coating vehicle bodies or parts thereof, with a coating material, having both an inner electrode and an outer electrode for electrostatically charging the coating material.

The present invention discloses a single step process for the synthesis of furan derivative from carbohydrate comprises stirring the reaction mixture of carbohydrate in solvent in presence of catalyst at temperature in the range of 170 to 190 C. for the period in the range of 23 to 25 hrs to afford corresponding furan derivative.