Device for controlling the excess air to an oil burner with an oil preheater

摘要

In order to obtain a constant air/fuel ratio, at least one sensor (9,13) determines the density of the combustion air and controls the reference value of a controller (6) regulating the oil temperature. The fact is made use of that at an oil pressure which remains constant, but with a rising oil temperature, the quantity of oil flowing per unit time through an atomizer nozzle becomes smaller. <IMAGE>