Patent ID: 6874770

Claim:
A high flow rate bubbler system comprising: a bubbler chamber containing a liquid chemical; a gas inlet for delivering a carrier gas to the liquid chemical inside said bubbler chamber a gas outlet for conveying the carrier gas and chemical vapors out of said bubbler chamber; and a vaporizer unit through which carrier gas and chemical vapors exiting said bubbler chamber pass, said vaporizer unit comprising one or more heated surfaces of substantial thermal mass oriented such that gases passing through said vaporizer unit contact said heated surfaces for a sufficient time to remove entrained liquid droplets, and said vaporizer unit having a substantial cross sectional area perpendicular to the direction of gas flow such that the gas velocity is substantially slowed; wherein the vaporizer unit comprises a flow chamber and a gas outlet tube having a first end and a second end, said first end is connected to and penetrates through said gas outlet into said bubbler chamber, said second end penetrates a bottom end wall of the flow chamber to provide a flow path for said carrier gas and chemical vapors to pass from said bubbler chamber into said flow chamber, and said first end is protected by a baffling device; wherein said baffling device comprises at least a first cup having an open end and a closed end, said first cup being aligned axially and concentrically with said gas outlet tube and positioned with the open end facing upward such that the first end of said gas outlet tube passes through the open end of said first cup but does not touch the closed end of said first cup; and at least a second cup having an open end and a closed end, said second cup being aligned axially and concentrically with said gas outlet tube and positioned with the open end facing downward such that the open end of said first cup passes through the open end of said second cup but does not touch the closed end of said second cup.