Back to results
US 6,142,764 AGranted
Method for changing the length of a coherent jet
AssigneePraxair Technology, Inc.
InventorsJohn Erling Anderson, Balu Sarma, William John Mahoney
Life of this patent
Estimating the term…
Abstract
A method for changing the length of a coherent jet by establishing a coherent jet using a flame envelope generated using gaseous fuel and changing the flowrate of the gaseous fuel, preferably using inert gas for make up to maintain a constant total flowrate of fuel and inert gas.
Claims10
A method for changing the length of a coherent jet comprising:
- (A) providing main gas in a main gas stream at a main gas flowrate, providing gaseous fuel at a first gaseous fuel flowrate, and combusting gaseous fuel with oxidant to form a flame envelope coaxial with the main gas stream to establish a coherent jet having a first length;
- and thereafter
- (B) providing main gas in a main gas stream at a main gas flowrate, providing gaseous fuel at a second gaseous fuel flowrate which differs from the first gaseous fuel flowrate, and combusting gaseous fuel with oxidant to form a flame envelope coaxial with the main gas stream to establish a coherent jet having a second length which differs from the first length.
Dependencies are inferred from the claim text.