Gas and liquid contact apparatus – Contact devices – Atomizer type
Patent
1976-02-25
1977-02-08
Miles, Tim R.
Gas and liquid contact apparatus
Contact devices
Atomizer type
128194, 239338, 261DIG65, A61M 1500, A61M 1106
Patent
active
040072380
ABSTRACT:
A nebulizer for use with IPPB equipment comprising a cylindrical housing closed at top and bottom, with an air inlet through the side wall of the housing, and an outlet through the side wall near the top of the housing. The outlet carries a mouthpiece. The bottom portion of the housing comprises a reservoir for liquid medication. There is an axial cylindrical chimney positioned inside the housing, with a skirt which hangs below the position of the inlet so that incoming air from the IPPB flows downward around the chimney, up inside of the chimney, out of the top of the chimney, and sideways into the outlet pipe. Positive pressure air is provided to a vertical nozzle positioned in the bottom of the housing creating a high velocity stream of air which flows over the end of a capillary tube, which dips into the medication in the base portion. The high velocity air jet causes the liquid medication to be inducted through the capillary and to be picked up by the flowing air as droplets of liquid to impinge on a horizontal cylindrical target positioned immediately above the nozzle, so that the liquid droplets are broken into many fine droplets, which are then picked up by the air flow, and carried upward through the chimney and to the outlet pipes.
REFERENCES:
patent: 2421359 (1947-05-01), Sutherland
patent: 2605764 (1952-08-01), Adams et al.
patent: 2869188 (1959-01-01), Cameto
patent: 3018971 (1962-01-01), Cheney
patent: 3097645 (1963-07-01), Lester
patent: 3172406 (1965-03-01), Bird et al.
patent: 3864326 (1975-02-01), Babington
Clements Gregory N.
Miles Tim R.
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