The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2001
Filed:
Nov. 09, 1999
Milorad Pavlicevic, Udine, IT;
Stefano Morsut, Udine, IT;
Alfredo Poloni, Fogliano di Redipuglia, IT;
Danieli & C. Officine Meccaniche S.p.A., Buttrio, IT;
Abstract
Nozzle for device to inject oxygen and technological gases used in metallurgical processing of metal melting, the nozzle being suitable to emit a gassy flow at supersonic velocity, the nozzle having a conformation symmetrical to a central axis (x) defined by a throat arranged between the inlet and the outlet, the throat defining an upstream part with a convergent development and a downstream part with a divergent development which ends in the outlet mouth, the nozzle with the convergent/divergent development having a geometry such that the fall in pressure of the gassy flow from inlet to outlet has a hyperbolic tangent development. Dimensioning method for the nozzle as above, the method providing an inverse dimensioning approach wherein the geometry of the nozzle is adapted to the natural profile of the fall in pressure of the gassy flow according to a hyperbolic tangent development, thus obtaining an optimum variation of the aerodynamic parameters according to the natural laws of expansion.