A rotary atomizing head (4) is mounted on a fore end side of a motor (3). A shaping air ring (9) having a plurality of air outlet holes (10) at fixed intervals is provided on a rear side of the rotary atomizing head (4). Outer surfaces of the air motor (3) and outer surfaces of the shaping air ring (9) are enshrouded over the entire circumference by a cover member (7) formed of an electrically insulating material. An external electrode assembly (13) is provided radially outwardly of the cover member (7). An annular projecting portion (16) which projects forward is provided on the shaping air ring (9) over the entire circumference. The air outlet holes (10) are open in a fore distal end of this annular projecting portion (16). As a result, a corona discharge can be generated by allowing an electric field to be concentrated at the fore distal end of the annular protecting portion (16).

The disclosure relates to a rotary atomizer for applying a spray jet of a coating agent (e.g. paint) to a component (e.g. motor vehicle body component). The disclosure provides that the construction dimensions of the rotary atomizer are coordinated in such a way that the air pressure at the outlet opening of the paint nozzle during operation is lower than the air pressure in the nozzle chamber of the bell cup and in the external rinsing channels in order to prevent a backflow of the coating agent from the outlet opening of the paint nozzle backwards in the direction of the nozzle chamber due to the pressure difference.

A bell plate is rotated about a rotational axis, and coating material is supplied to a discharge surface of the bell plate such that the coating material is projected away from the bell plate. A working fluid is blown at least temporarily as a transonic or supersonic flow onto the coating material coming from the bell plate by means of a dispensing device. Furthermore, a spray head for a rotary atomizer is provided for applying a coating material to an object, having a bell plate which can be rotated about a rotational axis and which has a discharge surface, wherein coating material can be supplied to the discharge surface such that the coating material is projected away from the bell plate. A dispensing device which can blow a working fluid at least temporarily as a transonic or supersonic flow onto the coating material coming from the bell plate.

A substrate treatment apparatus according to the embodiment includes: a nozzle which ejects a treatment liquid onto a treatment target surface of a substrate; a trajectory deflector including a trajectory deflecting surface, which is an annular inclined surface that deflects a traveling direction of the treatment liquid ejected from the nozzle and makes the treatment liquid incident on the treatment target surface, the trajectory deflecting surface having an inclination angle varying in a direction of annular extension of the trajectory deflecting surface; and a position changer which moves an incident position of the treatment liquid on the trajectory deflecting surface in the direction of annular extension of the trajectory deflecting surface.

A controlled droplet application (CDA) nozzle has a CDA nozzle cone having a first axis of rotation in a first position and, after adjustment, a second axis of rotation in a second position orthogonal to the first. A rotationally adjustable directional shroud surrounds at least a portion of the cone, the directional shroud blocking at least a portion of a lip of the cone regardless of whether the cone is positioned in the first or second axis of rotation.

A rotary atomizing head (4) is mounted on a fore end side of a motor (3). A shaping air ring (9) having a plurality of air outlet holes (10) at fixed intervals is provided on a rear side of the rotary atomizing head (4). Outer surfaces of the air motor (3) and outer surfaces of the shaping air ring (9) are enshrouded over the entire circumference by a cover member (7) formed of an electrically insulating material. An external electrode assembly (13) is provided radially outwardly of the cover member (7). An annular projecting portion (16) which projects forward is provided on the shaping air ring (9) over the entire circumference. The air outlet holes (10) are open in a fore distal end of this annular projecting portion (16). As a result, a corona discharge can be generated by allowing an electric field to be concentrated at the fore distal end of the annular protecting portion (16).

An annular gap space (18), into which a part of turbine air for driving a turbine (6) and exhaust air discharged from a rear thrust air bearing (12) flow out, is provided between an inner peripheral surface (5B) of a rotational shaft (5) and an outer peripheral surface (17B) of a feed tube (17). Air outflow holes (25) are provided in the rotational shaft (5) to be positioned between a radial air bearing (8) and a rotary atomizing head (16) and to be radially bored through the rotational shaft (5). As a result, the exhaust air flowing in the annular gap space (18) flows out outside of the rotational shaft (5) from the air outflow holes (25) in a position behind the rotary atomizing head (16).

The present invention relates to a coating product atomizer comprising a main body, an air supply skirt attached to the main body and magnetic attraction means between the magnetic body and the air supply skirt. The atomizer comprises a magneto-pneumatic or magneto-hydraulic system which includes a magnetic device for hooking the air supply skirt to the main body and a pneumatic or hydraulic mechanism for locking and clamping the air supply skirt to the main body.

The present invention relates to a rotary atomizer for coating products comprising a main body and a bowl rotated by a rotating member about a axis of rotation defined by the main body. The bowl is equipped with first means of magnetic coupling apt to cooperate with matching second means of magnetic coupling fastened to a non-rotating part of the atomizer. The first and second means of coupling are apt to exert a force at least partially axial with respect to the axis of rotation of the bowl, the force inducing the coupling in rotation of the bowl with the rotating member. The second means of magnetic coupling are supported by an air supply skirt directly mounted on the main body.

A controlled droplet application (CDA) nozzle has a CDA nozzle cone having a first axis of rotation in a first position and, after adjustment, a second axis of rotation in a second position orthogonal to the first. A rotationally adjustable directional shroud surrounds at least a portion of the cone, the directional shroud blocking at least a portion of a lip of the cone regardless of whether the cone is positioned in the first or second axis of rotation.