AIR COOLED OIL GUNS
Retraction of oil guns from normal firing positions can be eliminated by cooling critical parts of the atomizer continuously when the gun is not in operation. Air cooling of the non-operating oil guns tips in the firing position has been found to be adequate thus doing await the retract mechanisms
In this system, when the oil guns are out of operation they are not withdrawn but left in firing position itself. To protect the gun tips from overheating small quality of air at low pressure is supplied around the gun tip. Fins are provided to improve the cooling efficiency.
Basically, air-cooled oil guns consist of a finned cap nut and an air sleeve around it. The fins of the cap nut increase the heat transfer areas thus protecting the cap nut and simultaneously provide a very uniform distribution of cooling air to the oil gun tip efficiently.
The gun tip receives radiated heat from the flame and conducts it to the finned cap nut through the oil gun body. The air passing through the fins cools the finned cap nut and is directed into the gun tip at the exit.
To guide the cooling airflow through the finned cap nut and to ensure sufficient cooling airflow close to the gun tip, a directed air sleeve is mounted over the finned cap nut.