Nebulizer with high oxygen content and high total flow rate
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United States of America Patent
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Apr 12, 1994
Grant Date -
N/A
app pub date -
Sep 25, 1991
filing date -
Sep 25, 1991
priority date (Note) -
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Abstract
An air entrainment nebulizer obtains a high oxygen content with an optimum total flow rate by employing an oxygen jet large enough to flow about 40 liters a minute of pressurized oxygen and an air entrainment opening of a very small total size. The air entrainment opening is a configured for very fine incremental adjustment adjacent the minimal opening or nearly closed position so as to readily control oxygen content of the discharged moisturized mixture without excessively increasing total flow rate. The air entrainment aperture is divided several parallel mutually staggered elongated slots, each having a width sufficiently small to block projection of water droplets from the mixing chamber. The combination of a high flow rate oxygen jet and a small size air entrainment aperture provides a discharge outlet having oxygen percentages in the range of about 60% to nearly 100% while maintaining a total output flow rate in the order of about 40 to about 70 liters per minute.
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