Gas burner automatic air-fuel ratio regulating equipment - has thermostatic unit controlling gas valve, linked airflow control flap

摘要

The gas burning equipment automatically maintaining a constant air: fuel ratio is based on a conventional system with a gas throttle valve (2), and an injector nozzle (7, 9) feeding gas and primary air into the burner jet manifold (10). The nozzle unit is enclosed in a chamber (8) with an air intake control flap (16) linked (17) to the lever (18) actuating the gas valve. Also, secondary air enters the combustion space (11) through an opening (13) in one chamber wall through which the primary mixture feed pipe also passes. A thermostatic unit (19) operates the flow control level (18).