Micro Flame Front Ignition


Background Information:
Pilot systems must normally operate under difficult and dirty ambient conditions. Since ignition of a pilot is critical during any start-up process, components intended for ignition must be ready to operate satisfactorily at a moment’s notice. Designs utilizing high voltage probes requiring ceramic isolators are prone to degradation and premature failure when wet or dirty. External flame front lines, not an integral part of the pilot have also been employed for pilot ignition, however, these systems are very expensive and over time can collect water or moisture which causes scaling and other types of obstruction failures.

Operating Principle:

STACKMATCH Pilots operate with our patented Micro Flame Front Ignitiontechnology that is built with an ignition tube located inside the pilot body. This tube is allowed to fill with the same volatile fuel normally processed through the pilot body. Adjacent to this tube is a high-energy semiconductor component that originates pilot ignition. This design allows for all ignition components to be located at a safe distance from the excessive heat expected at the pilot nozzle. In addition, no water is allowed to remain within the pilot to cause ignition failure. During an ignition event, the nozzle is showered with flame for strong and sound pilot ignition. Because the micro flame front tube is internal and constantly purging forward, all internal components remain cool.

Internally, this pilot is equipped with the unique STACKMATCH patented ignition method. An internal Micro Flame Front Ignition is ignited at the base of the pilot by our exclusive “Low Voltage-High Energy” component. This generates a ball of flame at the base of the pilot which escapes the pilot through the nozzle cavity insuring proper pilot ignition.

How it works

1. Air and gas flow through the primary pilot

2. As mixed air and gas is passed through the primary pilot, small amounts enter theMicro Flame Front Ignition tube through small orifices. It is here where the mixed air and gas is ignited creating a small ball of flame which purges forward and exits the end of the Micro Flame Front Ignition tube igniting the Primary Pilot.

3. Since the Micro Flame Front Ignition is inside the primary pilot, it is cooled due to the cool mixed air and gas passing on the outside of the tube.