Discharge pipe and discharge apparatus using the same
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United States of America Patent
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-
Jan 31, 1989
Grant Date -
N/A
app pub date -
Oct 7, 1986
filing date -
Oct 9, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A water jet discharge pipe which produces a wide effective spray area and long water reach at low pressure and water volume. Compressed air is injected around the periphery of the pressurized water stream produced through an inner cylindrical member and which is throttled by a nozzle extending into such inner cylindrical member. The injected air prevents reduction of the flow velocity of the water by contact with the inner wall of the cylindrical member. In addition, external air is introduced through air inlets in an outer cylindrical member extending from the inner cylindrical member so as to straighten the air layer accompanying the water jet exiting from the inner cylindrical member and suppress premature dispersal of the water stream prior to ejection from the outer cylindrical member. After such ejection, expansion of the injected air atomizes the water stream to provide large area coverage thereof.
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