A printer is configured to provide a jet of extraction gas that extracts a printing fluid from a printing nozzle in the presence of an electric field that accelerates the extracted printing fluid toward a printing substrate. The printer is also configured to selectively turn the electric field and the jet of extraction gas off and on to enable printing in gas-extraction mode, an e-assisted gas-extraction mode, or an e-jet mode. The jet of gas can be provided by a second nozzle concentric with the printing nozzle. A third nozzle can discharge a focusing gas around the extracted printing fluid.

The invention relates to a method of depositing a substance onto a substrate (6), comprising: —providing a substrate (6) at a distance from a conducting spraying nozzle (1), said spaying nozzle (1) having an outlet (2); —providing a liquid composition containing the substance to the spraying nozzle (1); —generating electrically charged liquid droplets from the liquid composition between the outlet (2) of the spraying nozzle (1) and the substrate (6), by providing compressed gas around the liquid composition flowing out of the outlet (2) of the spraying nozzle (1) and by providing an electric field downstream of the outlet (2) of the spraying nozzle (1); and collecting the generated liquid droplets on the substrate (6). The invention also relates to an installation for carrying out this method.

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.

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 sprayer includes a spray gun having a nozzle at which pressurized spray media and pressurized air are combined into an atomized mixture. A generator electrostatically charges the atomized mixture at the nozzle. The generator may also electrostatically charge the pressurized spray media, or the pressurized air, or both at the nozzle. An input device of the spray gun is actuable by a user to vary a flow of the pressurized spray media to the nozzle. A main unit is connected to the spray gun with a hose via which the pressurized spray media and the pressurized air are communicated to the spray gun. The main unit has a first power mode in which a battery powers component(s) of the electrostatic sprayer. The main unit also has a second power mode in which a power source spaced apart from the main unit powers the component(s) of the electrostatic sprayer.

An electrostatic sprayer includes a spray gun having a nozzle at which pressurized spray media and pressurized air are combined into an atomized mixture. A generator electrostatically charges the atomized mixture at the nozzle. The generator may also electrostatically charge the pressurized spray media, or the pressurized air, or both at the nozzle. An input device of the spray gun is actuable by a user to vary a flow of the pressurized spray media to the nozzle. A main unit is connected to the spray gun with a hose via which the pressurized spray media and the pressurized air are communicated to the spray gun. The main unit has a first power mode in which a battery powers component(s) of the electrostatic sprayer. The main unit also has a second power mode in which a power source spaced apart from the main unit powers the component(s) of the electrostatic sprayer.

The present disclosure provides a spray device and a cleaning apparatus. The spray device includes an atomization structure, which is configured to atomize a cleaning liquid when the cleaning liquid is sprayed to form liquid droplets, and a jet structure, which is configured to spray a gas along a determined direction to cause the gas sprayed to collide with the liquid droplets to form atomized particles. The spray device provided by the present disclosure may increase cleaning uniformity and cleaning efficiency to improve cleaning process results, and may further reduce an impact force to the to-be-cleaned surface by the liquid droplets to a certain level. Thus, the damage to a surface pattern of a wafer may be reduced.

The present disclosure provides a spray device and a cleaning apparatus. The spray device includes an atomization structure, which is configured to atomize a cleaning liquid when the cleaning liquid is sprayed to form liquid droplets, and a jet structure, which is configured to spray a gas along a determined direction to cause the gas sprayed to collide with the liquid droplets to form atomized particles. The spray device provided by the present disclosure may increase cleaning uniformity and cleaning efficiency to improve cleaning process results, and may further reduce an impact force to the to-be-cleaned surface by the liquid droplets to a certain level. Thus, the damage to a surface pattern of a wafer may be reduced.

An electrospray generator includes a first electrode, a reservoir of liquid adjacent the first electrode, at least one wick having one end in the reservoir in contact with the liquid, a second electrode spaced a distance away from the wick, and a power source connected to one or more of the first and second electrodes. A method of generating a spray including inserting first ends of one or more wicks into a reservoir of liquid, the reservoir having a base electrode adjacent the liquid, positioning one or more offset electrodes at distance from second ends of the one or more wicks, and applying a voltage to at least one of the base electrode and the one or more offset electrodes to create an electric field, the electric field causing the liquid to move through the one or more wicks and form droplets in a spray.

An electrostatic sprayer system for dispensing and dispersing a liquid containing a spray compound includes a spray cloud dispersal feature that reduces the time that a residual spray cloud containing droplets including the spray compound remains suspended after spraying. A method of dispersing the residual spray cloud is implemented by a control system that causes a flow control system to deliver a non-active gas or liquid in conjunction with stopping delivery of the liquid containing the spray agent and charged with the same polarity, so that a charged cloud of the non-active gas or liquid, which may be air, displaces the suspended active fluid particles. The non-active gas or liquid may be dispensed for a predetermined time interval as determined by the control system, or the operator may control the time interval during which that the non-active fluid is dispensed.