Vortex twin-fluid nozzle with self-cleaning pintle

A nozzle for atomizing a liquid, comprising:

• a mixing means comprising a mixing chamber with a downstream opening;
• first-fluid inlet means, a first-fluid flowing through, communicating substantially tangentially to said mixing chamber and setting up a vortex flow as said first-fluid flows in;
• second-fluid inlet means, a second-fluid flowing through, communicating substantially axially to said first-fluid inlet means, allowing said first-fluid to mix with said second-fluid in said first-fluid inlet means forming a mixed-fluid, while setting up said vortex flow as said mixed-fluid flows into said mixing chamber;
• an orifice body coupled to said mixing means at the downstream having a discharge opening for discharging said mixed-fluid out of said nozzle;
• a deflecting means, coupled to said mixing means, comprising a substantially cylindrical stem and a substantially disk shape deflector head which includes an upstream surface for impingement of said mixed-fluid and a downstream surface coupled with a gas-purging means, fitted with a gas passage comprising a center conduit on said stem, at least one slot-communicating means connecting said stem to an annular groove on said deflector head and a gap set between said downstream surface of said deflector head and surface of said gas-purging means;
• a metering means, a predetermined passage gap, formed between said upstream surface of said deflector head and the exiting edge of said discharge opening of said orifice body while coupling said mixing means, said deflecting means and said orifice body together;
• and
• a locking means for coupling said mixing means and said orifice body.