Coating apparatus for coating an inside of a hollow body with an atomized fluid

摘要

A coating device for coating an inside of a hollow body with an atomized fluid has at least one atomizing tube enclosing an atomizing channel. A pressurized propellant gas for atomizing an unatomized fluid can be introduced into the atomizing tube. The atomizing tube has at least one outlet opening and further has at least one hollow needle having a discharge opening for the unatomized fluid. The at least one hollow needle interacts with the atomizing channel and is arranged essentially coaxially thereto. The atomizing tube and the hollow needle form a Venturi arrangement.

主权项

1. A method of coating an inside of a hollow body with an atomized fluid, the method comprising:
centering an atomizing tube relative to a longitudinal axis of the hollow body with a centering device including a plurality of centering elements by engaging an interior of the hollow body with the plurality of centering element such that the centering elements are only partially extended into the interior of the hollow body; axially moving the atomizing tube relative to the centering device; and dispensing the atomized fluid through a hollow needle associated with the atomizing tube to coat the inside of the hollow body.