Abstract:
A face-silent discharge electrode which includes plural parallel electrode bars separated from each other at a distance and arranged in a face is disposed to confront a substrate. A powder coating material is supplied in the space between said electrode and said substrate. An AC voltage is impressed on the electrode bars adjacent each other to generate a silent electric discharge over the entire surface of said face-silent discharge electrode. Concurrently, a DC voltage is impressed between the electrode bars and the substrate so that the powder coating material may adhere to a surface of the substrate to form a layer of uniform thickness.
Abstract:
In an installation for the electrostatic projection of powders for coating objects, a method of improving the efficiency of projection and deposit of the said powders consists of increasing the relative humidity of the projection gas in the immediate vicinity of the projection nozzle by means of mixing the jet of gas which conveys the coating powder, at the level of the projection nozzle, with a jet of auxiliary gas previously heated and humidified by means of an appropriate liquid. In an alternative method, there is comprised the further step of reducing the temperature of the main jet of gas before this main jet is mixed with the auxiliary gas.The apparatus for carrying the method into effect comprises the heating and humidifying devices for the auxiliary gas and a device for cooling the main gas.
Abstract:
A first aspect of the present invention is related to a method for manufacturing an emitter for electrospray generators. The method comprising the steps of providing a substrate, presenting a plate and at least one protrusion, and then nanotexturizing the outer surface of the at least one protrusion. The present invention, according to a second aspect, also relates to the emitter resulting of the manufacturing method, the electrospray generator comprising the emitter according to the present invention and an electric space propulsion device comprising at least one electrospray generator thereof.
Abstract:
A mist-generating device includes: a droplet generating unit that generates, in a third liquid, a functional droplet including a first liquid that is spherical and a second liquid that covers an entirety of the first liquid and has a volatility lower than a volatility of the first liquid; and a mist-generating unit that generates a multilayer mist obtained by atomizing the third liquid containing the functional droplet.
Abstract:
A discharge device according to the present disclosure includes a discharge electrode and a voltage applicator that applies a voltage to the discharge electrode and thus causes discharge that is further developed from corona discharge at the discharge electrode. The discharge is discharge in which a discharge path is intermittently formed by dielectric breakdown so as to stretch from the discharge electrode to a surrounding. This discharge can be called leader discharge. This makes it possible to increase an amount of generated active component while keeping an increase of ozone small.
Abstract:
Voltage application device includes voltage application circuit. Voltage application circuit causes discharge electrode to generate a discharge by applying an application voltage to load that includes discharge electrode holding liquid. Voltage application circuit periodically changes a magnitude of the application voltage to generate a discharge intermittently. Voltage application circuit applies a maintaining voltage to load for suppressing contraction of liquid in addition to the application voltage during an intermittent period from a discharge to a next discharge.
Abstract:
An electrostatic atomizing apparatus includes an air flow path, a humidifier, and electrode section, and a control unit. The air flow path has an air intake port and an air exhaust port. The humidifier includes a portion of the air flow path and humidifies air taken in through the air intake port. The electrode section includes a portion of the air flow path and produces charged particulate water by causing water in the air humidified by the humidifier to condense on an electrode and applying voltage to the electrode. A flow rate of the air in the air flow path is regulated in accordance with at least one of humidity and temperature of the air taken in through the air intake port.