초록 ▼

In an atomizer head that produces a conical droplet mist, two shaping air ducts are diametrically opposing and are provided in the vicinity of the mist outlet aperture. The shaping air jets emerging from these ducts flatten the droplet mist which thus has a larger cone angle in one direction and a s

In an atomizer head that produces a conical droplet mist, two shaping air ducts are diametrically opposing and are provided in the vicinity of the mist outlet aperture. The shaping air jets emerging from these ducts flatten the droplet mist which thus has a larger cone angle in one direction and a smaller cone angle in the other direction. A droplet mist thus flattened can be used to apply a liquid layer in a manner particularly true to the areas and contours of a workpiece surface.

대표청구항 ▼

[ I claim:] [1.] A device for spraying a workpiece with a liquid, having at least one atomizing head (28), having a storage container (76) for a liquid to be atomized, having a pump (70) for delivering the liquid that is to be atomized from the storage container (76) to said at least one atomizing h

[ I claim:] [1.] A device for spraying a workpiece with a liquid, having at least one atomizing head (28), having a storage container (76) for a liquid to be atomized, having a pump (70) for delivering the liquid that is to be atomized from the storage container (76) to said at least one atomizing head (28), having an atomizing-air control-valve arrangement (50) connected between a source of atomizing-air (38) and atomizing-air connecting means (118) of said at least one atomizing head (28) and having a source of forming-air (40) connected to the forming-air connecting means (154) of said at least one atomizing head (28), wherein the control-valve arrangement (50) is activated by a control unit (82) responsive to an output signal of a path position sensor (44) responding to the position of the workpiece (12) to be sprayed, the workpiece (12) being propelled past said at least one atomizing head (28) by a transport device (16), and wherein said at least one atomizing head (28) includes a housing (84), an atomizing nozzle body (122) formed with a dosing aperture (128) and with said atomizing-air connecting means (118) as well as liquid connection means (124) connected to said storage container (76), includes a dosing needle (100) that is coaxial with the dosing aperture (128) and together with the latter defines a cross-section of a feed passage for the liquid to be atomized, includes an atomizing-air nozzle assembly (132) surrounding the dosing aperture (128), said atomizing nozzle assembly (132) communicating with said atomizing-air connection means (118) and providing an axially symmetrical stream of air, and includes a forming-air nozzle assembly (156) arranged around the atomizing nozzle assembly (132), the forming-air nozzle assembly (156) communicating with the forming-air connecting means (154) connected to the source of forming-air (40) and generating a stream of forming-air that is directed in such a way that it impinges on a cone of droplets (30) exhibiting a conical outer contour and generated by the nozzle body (122) and the atomizing nozzle assembly (132).