The durability of resin components can be improved by preventing ozone from staying in gaps where there is no air flow. A cylindrical gap is provided around the outer peripheral side of the head portion between the head portion and the resin cover portion covering the outer peripheral side of the head portion. Moreover, the head portion is provided with a pilot air introduction path guiding the pilot air exhausted from the switching valves to the cylindrical gap. In addition, the arm portion is provided with a pilot air exhaust path exhausting the pilot air from the cylindrical gap to the outside.

The invention relates to a sprayer, comprising an air guiding element and means for fastening the air guiding element on a fixed member of the sprayer. The fastening means comprise at least one magnetic attraction means mounted on a first component from among the air guiding element and the fixed member and at least one part made from a ferromagnetic material, which is intended to cooperate with the magnetic attraction means and which is mounted on or formed by the other component from among the air guiding element and the fixed element.

A rotary coating sprayer including a spray bowl rotating about an axis of rotation and an air turbine for driving the bowl. The turbine includes a rotor and a body forming a support for the rotor and defining at least one air feedline for a rotation chamber wherein the rotor blades are arranged. The feedline includes an intermediate chamber defined, radially to the rotation axis, between the body and a ring mounted around the body. In this way, lowering of temperature of an element of the sprayer housing due to flow of exhaust air from the turbine, is limited.

An air motor, a rotary atomizing head provided on a front side of the air motor to be rotatable by the air motor, external electrode units provided in a periphery of the rotary atomizing head, and a high-voltage applying unit that applies a high voltage to the external electrode units to indirectly charge paint particles atomized from the rotary atomizing head with the high voltage. A film cover is provided to be formed with a resin material in a film shape for covering an outer peripheral side of the air motor. The film cover includes a cylindrical rear cover that covers the rear side from the external electrode units and a cylindrical front cover that is mounted to the front side of the rear cover to cover the front side from the external electrode units.

A bearing air passage through which bearing air is supplied toward an air bearing of an air motor and a turbine air passage through which driving air is supplied toward a turbine are provided in a housing. An annular space surrounding the air motor is provided between the housing and a cover. A bearing air branch passage connecting the annular space and the bearing air passage to each other and a turbine air branch passage for connecting the annular space and the turbine air passage to each other are provided. The air branch passages lead a part of the compressed air to the annular space and keep the cover in a heated state.

Provided in the present disclosure is a spray ionization device comprising: a first tube that has a first flow path in which a liquid can flow, the first tube having 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 and has a second flow path in which a gas can flow, the second tube having a second outlet on the one end thereof and the second flow path being defined by the outer peripheral surface of the first tube and the inner peripheral surface of the second tube; and an electrode contacting the liquid flowing through the first flow path, the electrode being able to apply a voltage to the liquid by means of a power source connected to the electrode, wherein charged droplets of the liquid can be sprayed from the second outlet.

The invention relates to a sprayer, comprising an air guiding element and means for fastening the air guiding element on a fixed member of the sprayer. The fastening means comprise at least one magnetic attraction means mounted on a first component from among the air guiding element and the fixed member and at least one part made from a ferromagnetic material, which is intended to cooperate with the magnetic attraction means and which is mounted on or formed by the other component from among the air guiding element and the fixed element.

A rotary atomizing head (4) is mounted on a front end side of an air motor (3). A shaping air ring (9) with air spout holes (10, 11) formed therein is provided on the rear side of the rotary atomizing head (4). The shaping air ring (9) is formed of a conductive material and is connected to ground. External electrode units (13) are provided in the periphery of the rotary atomizing head (4). A film cover (17) made of an insulating material is provided to cover an outer peripheral side of the air motor (3). A semi conductive member (21) is replaceably mounted to an adaptor (16) provided on an outer peripheral side of the shaping air ring (9). A rear end part (21B) of the semi conductive member (21) is made in contact with a front end part (19D) of the film cover (17). A front end part (21C) of the semi conductive member (21) is made in contact with the shaping air ring (9).

A shaping air ring for a rotary bell atomizer spray device includes a plurality of circumferentially spaced nozzles disposed in the shaping air ring, wherein each nozzle has a mix chamber, at least one inlet on an upstream end of the mix chamber, and an outlet at a downstream end of the mix chamber. First and second air flows are provided to the mix chamber through the at least one inlet and a combined air flow is discharged through the outlet. The combined air flow shapes the spray pattern of the liquid sprayed by the rotary bell atomizer spray device.

The disclosure relates to a coating method for coating a component with a coating agent, comprising the following steps: moving an application device over a component surface of the component to be coated, delivering a coating agent jet (9) from the application device to the component surface that is to be coated, defining switching points on the component surface for initiating a switching action, in particular for switching on or switching off a coating agent jet, and performing the switching action when one of the switching points is reached. The disclosure provides the following steps: marking the switching points on the component surface by generating a switching marking on the component surface at the individual switching points, detecting the switching markings corresponding to the individual switching points during movement of the application device, and performing the switching actions when the switching markings are detected on the component surface. The disclosure further includes a corresponding coating installation.