Fluid sprinkling – spraying – and diffusing – Combining of separately supplied fluids – At or beyond outlet
Patent
1980-08-15
1982-08-03
Marbert, James B.
Fluid sprinkling, spraying, and diffusing
Combining of separately supplied fluids
At or beyond outlet
2392885, 175 67, B05B 706
Patent
active
043424252
ABSTRACT:
A cavitation nozzle assembly is described for discharging a high velocity jet of liquid with cavitation bubbles therein. The nozzle assembly includes a supply chamber having an upstream portion divergent in a downstream direction, a downstream portion convergent in the downstream direction, and a central section of generally constant cross-sectional area. The convergent portion is conical in form and encloses an angle of about 65.degree.-90.degree., more preferably 75.degree. to 85.degree. and optimally about 80.degree.. The convergent portion converges to a discharge orifice having a circular cross-section with a diameter in the range from about 1.2 mm to about 4.0 mm. In a more preferred form, liquid distribution means are provided adjacent to the discharge orifice, configured to produce a shroud of said liquid at low pressure surrounding the high velocity jet. In another preferred embodiment, the central section of the supply chamber has a diameter from about 12 mm to about 50 mm. Still more preferably, the convergent portion and discharge orifice are provided in a disc-like nozzle element, preferably releasably secured to define a downstream end of the supply chamber. In yet another preferred embodiment the nozzle element has a plurality of said discharge orifices. In a further preferred embodiment positioning means are provided to abut a surface being treated, and causing the high velocity jet to impinge the surface at an angle from about 30.degree. to about 60.degree..
REFERENCES:
patent: 3572839 (1971-03-01), Okape
patent: 3807632 (1974-04-01), Johnson, Jr.
patent: 4171091 (1979-10-01), Hardeveld et al.
patent: 4193635 (1980-03-01), Thiruvengadam et al.
Her Majesty the Queen in right of Canada as represented by the
Hinds William R.
Marbert James B.
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