Ionisation probe for flame monitoring of burners and burner with an ionisation probe

摘要

Ionisation probe for flame monitoring on oil or gas burners, consisting of an ionisation core 21''' which is fastened in a support 22''' of electrically insulating material. In order to largely exclude thermal deformations of the probe, the ionisation core is of tubular construction, so that it also acts as a cooling air tube. The support is formed with a wider internal diameter at the end 31' projecting into the combustion chamber, so that a gap 34', which the combustion gas cannot enter, remains between the ionisation core and the support. This stops a deposit 30 from the combustion gases from forming on the probe 20''' and, thereby from causing a short circuit preventing the probe from functioning, because the deposit is unable to bridge the gap. <IMAGE>