Mixing device

Details Mixing device Mixing device

1991-03-19

1993-10-26

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 99, 422103, 239429, 239430, B01F 506, F17D 312

Patent

active

052563758

ABSTRACT:
A mixing device for use in a duct (12), particularly for use when testing the efficiency of a filter (10) in the duct by aerosol injection, consists of a pipe (24) with a closed end arranged near the middle of the duct (12). The other end of the pipe is connected to a source (26) of compressed air. Near the closed end are one or more narrow holes (28) so that narrow air jets are created across the width of the duct. The air jets create large-scale turbulence in air flowing in the duct, even where that air flow was already turbulent, such that thorough mixing is achieved within as little as two duct diameters or less, while producing negligible pressure drop. The mixing device may be combined with an aerosol injector (20, 22).

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