COMBINATION GAS ENRICHER, SPARK IGNITER, FLAME SENSOR

摘要

A unit (20) mounted adjacent a main gas burner (11) comprising a gas supply tube (23) and a high voltage electrode (32 min ) to form a spark gap of a high voltage gas ignition and flame proving system. Raw gas is supplied through the tube (23) to enrich the gas mixture around the spark gap (40) to a lower air to gas ratio than the air-gas mixture fed to the main burner.