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AssigneeSames Technologies
InventorsThierry Buquet, Michel Di Gioia
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The inventive device for electrostatically projecting a coating product comprises a spray gun provided with voltage increasing means for producing a high direct voltage for a product electrostatic charge, wherein said spray gun is provided with a controllable valve for controlling an atomizing air flow inside the spray gun in the direction to a spraying head. A pressure sensor integrated into the spray gun is used for detecting the atomizing air pressure (P) representative value downstream of the valve and for delivering a signal (S1) for controlling the power supply of the voltage increasing means. Said invention makes it possible to control the power supply of the voltage increasing means according, in particular, to the signal (S1) received from the sensor.
An installation for electrostatically spraying a coating material, the installation comprising a sprayer provided with voltage-multiplier means suitable for generating a direct high voltage for electrostatically charging said material, said sprayer being fitted with a controlled valve controlling the flow of atomization air inside said sprayer towards a spray head, wherein a pressure sensor integrated in said sprayer is suitable for detecting a value representative of the pressure of atomization air downstream from said valve and for delivering a signal suitable for use in controlling the supply of electricity to said voltage-multiplier means.
A method of controlling the supplying of electricity to voltage-multiplier means belonging to an electrostatic sprayer for spraying a coating material and suitable for generating a direct high voltage for electrostatically charging said material, wherein the method comprises the steps consisting in:
Dependencies are inferred from the claim text.