A coating device for applying a coating agent to the surface of a workpiece. The coating device includes a frame having a workpiece receptacle, a coating agent source, a compressed air source, and a rotary unit which is rotatable in relation to the frame. The rotary unit has a pump and a plurality of spray units, the pump on the suction side being connected to the coating agent source by a fluid-conducting rotary joint connection, and on the pressure side being connected to the spray units. The rotary unit has a pneumatic valve device, and the spray units have in each case one compressed air controlled valve for controlling the delivery of coating agent. The valve on the inlet side is connected to the compressed air source by a fluid-conducting rotary feedthrough and on the exhaust air side is connected to the compressed air controlled valves of the spray units.

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.

A method of applying heat shield material to form a heat shield layer on a crown surface of a piston of an engine is provided. The method includes the steps of disposing a dispenser that linearly discharges the heat shield material toward the crown surface, and moving an applied position of the heat shield material with respect to the crown surface in a circumferential direction of the crown surface, while discharging the heat shield material from the dispenser toward the crown surface.

An essential oil reflux-type atomizer comprising the following structures: chassis, housing, atomization chamber, gas pump, gas tube, gas nozzle, oil nozzle, and filter atomization mechanism. The filter atomization mechanism is installed in the housing and has an upper filter and a lower filter. The essential oil atomizer can be improved efficiency and reduced noise level.

A spray gun has at least one air valve that can be actuated by at least one trigger, having at least one valve inlet region and at least one valve outlet region. The spray gun has at least one material valve designed in such a way that it can be pneumatically actuated by air from the at least one valve outlet region. With this design, the force to be exerted to actuate the actuation element by the user of the spray gun is significantly lower than in prior spray guns, which allows for effortless operation.

A microfluidic delivery device and method of dispensing a fluid composition from a microfluidic die are provided. The method includes generating air flow from a fan; directing a first portion of the air flow through a first air outlet in a housing; directing a second portion of the air flow through a second air outlet in the housing; jetting a fluid composition from a microfluidic die through a fluid orifice in the housing; directing the second portion of air flow adjacent to the microfluidic die and out the fluid outlet, wherein the first portion of the air flow directs the fluid composition jetted out of the fluid outlet into the air.

A method of dispensing a fluid in a semiconductor manufacturing process includes providing a substrate, positioning a nozzle above the substrate, and determining a cross-sectional shape of the nozzle. The method also includes configuring the nozzle to have the determined cross-sectional shape and applying the fluid to the substrate through the nozzle with the determined cross-sectional shape.

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

A spray ionization device comprising: a first tube that has a first flow path through which a liquid can flow and a first outlet on one end thereof from which the liquid is sprayed; a second tube that surrounds the first tube with a gap therebetween, has a second flow path through which a gas can flow, and has a second outlet on the one end thereof; and an electrode that extends through the interior of the first flow path of the first tube, from the other end thereof to the one end, said electrode being arranged such that the tip thereof is at the same position as the first outlet or is further on the other end side than the first outlet, and said electrode being able to apply a voltage to the liquid by means of a power source connected to the electrode.

An application device according to an embodiment includes a liquid nozzle part, an air nozzle part, and an ejection controlling unit. The liquid nozzle part ejects liquid to be applied to an electronic component mounted on a substrate. The air nozzle part ejects air toward the substrate. The air nozzle is concentrically arranged with respect to the liquid nozzle part. The ejection controlling unit ejects the air from the air nozzle part at a timing in synchronization with an ejection timing of the liquid to be applied by the liquid nozzle part.