Patent ID: 9138759
Filing Date: 2015-09-22
Classification: B05B,B05C

Abstract:
1. An atomizer for electrostatically spraying coating material in liquid or in powder form, said atomizer comprising: an electrically insulating atomizer body; an atomizer member for spraying coating material, wherein the atomizer member is mounted to rotate relative to the electrically insulating atomizer body and about an axis of rotation; rotary drive means for driving the atomizer member in rotation and having a casing secured to a downstream portion of the electrically insulating atomizer body; electrical power supply means arranged for raising the potential of the atomizer member to high voltage; conductive elements that are electrically connected to the electrical power supply means, the potential of the conductive elements being suitable for being raised to high voltage; and a detector device for evaluating the speed of rotation of the atomizer member, the detector device comprising: said atomizer being characterized in that the electrically insulating atomizer body comprises at least one insulating wall formed integrally with the electrically insulating atomizer body, the wall defining a recess surrounding the sensor and all or some part of the link cable in a manner to insulate the entire sensor and all or some part of the cable link electrically from the conductive elements, the wall comprising an axial portion which extends radially toward the axis of rotation of the atomizer member and which is disposed between a downstream axial surface of the recess and an upstream surface of the casing in a direction parallel to the axis of rotation; wherein the target is separated from the detector only by the insulating wall formed integrally with the electrically insulating atomizer body.