FLUID-COOLED INJECTOR

WIPO Patent Application WO2000018491

A9

An injector for delivery of a fluid into a stream of hot gas is disclosed. The injector has a valve body with an elongated chamber in fluid communication with an orifice. A valve seat surrounds the orifice. A valve plunger is disposed within the chamber, an end of the plunger being adapted to sealingly interengage the seat. The plunger is slidably movable between an open and a closed position to open and close the orifice. A fluid inlet and outlet cool the valve by circulating fluid in an annular fluid passageway in the chamber adjacent to the valve seat. A portion of the fluid is expelled through the orifice when the valve is opened. The plunger is biased closed, being movable into the open position by an actuator. The injector is mounted on an exhaust conduit in fluid communication with the exhaust gases. A heat shield surrounding the orifice is interposed between the exhaust gases and the valve body. A radiant heat reflector is positioned between exposed parts of the injector and the exhaust conduit. An atomizing hook faces the orifice to control the dispersion characteristics of the expelled fluid.

CZARNIK RICHARD J (US)
DICARLO JEFFREY P (US)
KNAPPER CURTIS J (US)
SIMARD THOMAS C (US)
TARABULSKI THEODORE J (US)

PCT/US1999/022386

October 19, 2000

September 27, 1999

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AMBAC INTERNATIONAL (US)
CZARNIK RICHARD J (US)
DICARLO JEFFREY P (US)
KNAPPER CURTIS J (US)
SIMARD THOMAS C (US)
TARABULSKI THEODORE J (US)

B01D53/56; B01D53/86; F01N13/14; B01D53/90; B01D53/94; B05B1/02; F01N3/08; F01N3/20; F01N3/28; F16K31/06; (IPC1-7): B01D53/00; B01D53/56

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