| 摘要 |
<p>1,253,298. Spray producers. UNION CARBIDE CORP. 15 Jan., 1969 [16 Jan., 1968], No. 2368/69. Heading B2F. [Also in Divisions C6, C7, H3 and H5] A nozzle comprises a central orifice through which a gaseous effluent can flow, surrounded by an annular coaxial orifice through which an inert gas can be forced such that in operation the inert gas forms an uniformly turbulent annular stream with a width W measured in inches of from 0.25 to 4.0 times the square root of the diameter D 0 of the central orifice measured in inches. In operation the longitudinal momentum flux of the stream is greater than 2.0 1b¢/sec ft¢ as given by the expression (Q/A)P<SP>¢</SP> where Q is the flow rate in ft<SP>3</SP>/sec of the annular stream, A is the annular area in ft<SP>2</SP> and p is the density of the gas in 1b/ft<SP>3</SP>. The nozzle may be used in a plasma spray gun.</p> |
