Patent ID: 7596305

Claim:
An apparatus for preparing vaporized reactants, comprising: at least one coating precursor wherein said precursor is a metal or silicon compound at a temperature above its melting point but substantially below its standard vaporization temperature, thereby causing said coating precursor to be in the form of a liquid; a magnetically driven portion having at least one driver magnet connected to a motor shaft for rotation and at least one driven magnet connected to a mixing shaft for rotation of the mixing shaft about a horizontally oriented axis in response to the rotation of the at least one driver magnet, and a structure to align the at least one driver magnet and the at least one driven magnet, said driven magnet being located in a magnet chamber, said magnet chamber separating said driver magnet from said driven magnet; a horizontally oriented vaporization chamber having a first inlet through which said liquid coating precursor is continually injected into said chamber thereby producing a vapor, and a second inlet through which an inert gas is injected causing an increase in the mass transfer of the vapor from the vaporization chamber; a barrier portion separating said vaporization chamber from said magnetically driven portion, said barrier portion having a distinct barrier gas continuously injected therein, said barrier gas being injected into said magnet chamber to flow past said driven magnet and into said vaporization chamber to prevent said vapor from contacting said driven magnet; a rotating structure comprising one or more mechanical wipers or blades connected to the mixing shaft for uniformly propelling said liquid coating precursor against an inner wall of said vaporization chamber, said structure in communication with said magnetically driven portion through said barrier portion so as to provide a continuous stream of vaporized reactant.