Gas-to-gas aspirator with improved incorporation efficiency

摘要

And an eductive gas-to-gas aspirator with improved mixing efficiency comprises a driving gas nozzle consisting of a distal tip with an arch-like internal profile converging in the downstream direction. The inner profile of the arch shape preferably has a convergent curve of a sinusoidal wave. In a preferred embodiment, the length L _s of the nozzle tip is from 2D to 4 D, where D is the diameter of the outlet orifice, and the distance L _d between the nozzle outlet orifice and the upstream end of the vial passage is from 0 to D. .