Nozzle and method for enhancing fluid entrainment
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United States of America Patent
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Nov 30, 1999
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N/A
app pub date -
Aug 6, 1997
filing date -
Aug 6, 1997
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Abstract
A nozzle 10 and method for enhancing entrainment of a fluid near a face 18 of the nozzle 10, where the nozzle 10 includes a nozzle body 18 defining a nozzle opening 14 for ejecting a fluid therethrough. At least one indentation 20 is formed in the nozzle face 18 adjacent to, but spaced from, the nozzle opening 14 and includes a contoured surface 22 defined by first and second side surfaces 24 and 26 that converge toward the nozzle opening 14 to form a leading edge 28 closest to the nozzle opening 14. The imaginary extension 30 of at least a portion of the contoured surface 22 converges at a focal point 32 distal the nozzle face 18, defining an entrainment path. The focal point 32 is closer to an imaginary projection 34 of the nozzle opening 14, extending outwardly from and normal to the nozzle face 18, than the leading edge 20 is to the nozzle opening 14. Thus, fluid near the nozzle face in the indentation 20 is entrained into the entrainment path 30 and fluid ejected through the nozzle opening 14.
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