US 4,504,425 A · Process and apparatus for effecting carburetion

Abstract

The disclosure relates to a process and apparatus for effecting carburetion to provide an air and vaporized fuel mixture for operating an internal combustion engine, or the like. A vaporizing and mixing chamber is justaposed on an intermediate chamber which, in turn, is justaposed on a holding chamber. Ambient air is admitted to the intermediate chamber and fuel at ambient pressure is admitted to the holding chamber. Metering means is provided for metering air flow from the intermediate chamber into the vaporizing and mixing chamber and for metering the flow of liquid from the holding chamber. The fuel flows axially to a jet orifice into the confluence of a plurality of air jet passages directed counter to the flow of fuel to the jet orifice and the resultant mixture of air and liquid fuel is aspirated in a column into the vaporizing and mixing zone. A whirling motion is imparted to the air-liquid fuel mixture in the column so that, when it reaches the vaporizing and mixing column, it flies out by centrifugal force into the vaporizing and mixing chamber. The air jet orifices are directed at an acute, oblique angle, so that the jet orifices are an annular loci at the base of the column and the fuel is jetted up into the center of the loci. A turbulent vortex is thus established at the confluence which promotes disintegration of the fuel into tiny globules and dispersion of these globules into the air.

Claims34

Dependent claims

In a process for effecting carburetion of a gaseous component and a volatile liquid component of a reaction mixture which needs to be in a gaseous condition prior to the initiation of the reaction, which comprises, aspirating a portion of said gaseous component into a vaporizing chamber maintained at subambient pressure, mixing the remaining portion of said gaseous component with said liquid component in a cylindrical mixing chamber having a discharge end coaxial with a tubular aspirating extension which opens into said vaporizing chamber and an inlet end at the opposite end thereof;

and aspirating the resultant mixture into said vaporizing chamber and allowing it to disperse therein;
the improvement which comprises, effecting said mixing by aspirating a jet of said liquid component axially into said cylindrical mixing chamber through an axial liquid component jet orifice in the inlet end thereof;
aspirating a plurality of jets of said gaseous component into said mixing chamber through gaseous component jet orifices located in the periphery thereof, oriented at an acute, oblique angle which impresses a circumferential whirling motion on a radial motion in which the incoming gaseous component meets the incoming liquid component head-on in a turbulent, rolling, toroidal vortex, thereby producing a mixture comprising an intimate dispersion of the liquid component in the gaseous component which rapidly vaporizes after it passes out of said tubular aspirating extension and flies out radially as a result of centrifugal force into said vaporizing chamber.

the improvement which further comprises whirl-inducing means for inducing a whirling motion in said mixing chamber and in which said tubular extension is an open tube in which the circumferential flow is unimpeded and has a cross-section smaller than that of said mixing chamber, whereby both the axial and circumferential velocity of the resultant whirl is increased as it passes from said mixing chamber into said tubular extension.

In apparatus for effecting carburetion of a gaseous component and a volatile liquid component of a reaction mixture which needs to be in a gaseous condition prior to the initiation of the reaction, which comprises, first aspirating means for aspirating a portion of said gaseous component into a vaporizing chamber adapted to be maintained at subambient pressure;

mixing means for mixing the remaining portion of said gaseous component with said liquid component in such a manner that the liquid component is dispersed in the liquid phase in said gaseous component;
and second aspirating means for aspirating the gaseous component and the liquid component into said mixing means and aspirating the resultant mixture into said vaporizing chamber and allowing it to disperse therein;
said mixing means comprising a tubular mixing chamber having a discharge end, an axial, liquid component jet orifice at the opposite end thereof, and circumferential gaseous component jets, and said second aspirating means comprising a tubular extension coaxial with said mixing chamber and having one end communicating with the discharge end thereof and the opposite end communicating with said mixing chamber;
the improvement in which said mixing chamber comprises circumferentially-disposed, gaseous component jet orifices through which a plurality of jets of said gaseous component are aspirated into said mixing chamber, said gaseous component jet orifices being oriented to deliver said jets at a acute, oblique angle which impresses a circumferential whirling motion on a radial motion in which the incoming gaseous component meets the incoming liquid component head-on in a turbulent, rolling, torodial vortex, thereby producing a mixture comprising an intimate dispersion of the liquid component in the gaseous component which rapidly vaporizes after it passes out of said tubular aspirating extension and flies out radially as a result of centrifugal force into said vaporizing chamber, thereby creating a turbulence which promotes mixing and vaporizing therein;
the aspirating of said gaseous and liquid components being induced by a state of subambient pressure in said vaporizing chamber.

2 more elements

Dependencies are inferred from the claim text.

Process and apparatus for effecting carburetion

Life of this patent

Process and apparatus for effecting carburetion

Life of this patent

Abstract

Claims34