Abstract

The invention relates to a method for controlling an evaporator burner, having an electrically heatable evaporator chamber, to which the heating oil to be burned is supplied, and having a fan for feeding the combustion air. According to the invention, an actual evaporator chamber temperature value TVDKIst is adjusted to a target evaporator chamber temperature value TVDKSoll after the burner is started, namely by varying the amount of air supplied to the burner, which is carried out by means of controlling a rotational speed D of the fan according to a function D = f(TVDKIst). Ideal evaporation of the heating oil is achieved by the control according to the invention. This prevents carbon build-up residue of the heating oil in the evaporator chamber. Furthermore, trouble-free burner operation is achieved over a long period of use by means of the invention, according to which the imission threshold values are adhered to.

IPC Classes  ?

• F23D 11/44 - Preheating devicesVaporising devices
• F23N 3/00 - Regulating air supply or draught
• F23N 5/02 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium

Abstract

The invention relates to a method for regulating a burner of a heating system with a heating vessel and two loads, namely an all-weather heating circuit which is a direct heating circuit without a mixing valve, and a boiler circuit with a hot water boiler, wherein either one of these two loads can be connected to the heating vessel on the input side by means of a transfer valve, wherein the burner is switched off when a switch-off threshold TAB for the hot water boiler or a switch-off threshold TAH for the heating circuit is exceeded, and the burner is switched on when a switch-on threshold TEB for the hot water boiler or a switch-on threshold TEH for the heating circuit is not reached. According to the invention, the burner is kept in operation after being filled with domestic water during a burner lag time tn when the heating operation is enabled. During this burner lag time tn, the transfer valve is switched over to the heating circuit. The burner lag time tn is varied in accordance with the heating demands of the heating circuit. By means of the invention, the burner lead time is extended in order to reduce the number of burner starts.

IPC Classes  ?

• F24D 19/10 - Arrangement or mounting of control or safety devices