Heating Burner

Abstract

The invention relates to a heating burner, in particular a heating burner for the combustion of long chain liquid fuel. The heating burner according to the invention comprises a control device which controls its actuators, namely an ignition device for igniting the fuel, an air delivery device for delivering combustion air and a fuel delivery device for delivering fuel to the ignition device, in such a way that the fuel is ignited at periodically recurring ignition intervals and burns for an adjustable combustion interval, wherein the heating capacity can be regulated at the interval concerned for the duration of the combustion interval by the control device.

1 . Heating burner for a heating system
 having a control device,   having at least one primary sensor for detecting the calorific output of the heating burner and   having actuators comprising an ignition device for igniting fuel, an air delivery device for delivering combustion air and a fuel delivery device for conveying fuel to the ignition device,   wherein the delivery volume from the fuel delivery device and/or air delivery device is essentially freely adjustable and the control device adjusts the actuators in such a way that the fuel is ignited in periodically recurring ignition intervals (t Z ) and burns for an adjustable combustion interval (t B ), wherein the calorific output may be regulated by the control device by way of the duration of the combustion interval (t B ) in the ignition interval (t Z ) concerned.   
   
   
       2 . Heating burner in accordance with  claim 1   characterized in that   the ignition intervals (t Z ) are less than or equal to 60 seconds.   
   
   
       3 . Heating burner in accordance with one of the preceding  claim 1   characterized in that   the fuel is a liquid fuel, more particularly rapeseed oil.   
   
   
       4 . Heating burner in accordance with  claim 1   characterized in that   the actuators comprise a motor which sets a truncated cone in rotation around its longitudinal axis in such a way that fuel introduced via an inlet opening into the truncated cone exits from an outlet opening and is atomized because of the centrifugal forces generated.   
   
   
       5 . Heating burner in accordance with  claim 4   characterized in that   the ignition device comprises a heat recovery feature manufactured from a thermally conducting material and which passes the heat arising on combustion of the fuel to the fuel flowing into the burner.   
   
   
       6 . Heating burner in accordance with  claim 5   characterized in that   the heat recovery feature is arranged at least partially inside the truncated cone projecting beyond the outlet opening.   
   
   
       7 . Heating burner in accordance with  claim 4 ,
 characterized in that   the ignition device comprises a preheater that heats the fuel to ignition temperature.   
   
   
       8 . Heating burner in accordance with  claim 7 ,
 characterized in that   the preheater comprises a heating coil enclosing the truncated cone.   
   
   
       9 . Heating burner in accordance with  claim 1   characterized in that   the control device is designed such that it controls the fuel delivery device and the air delivery device in such a way that an essentially constant air/fuel ratio is present at the ignition device during the combustion interval (t B ), preferably in an initialization interval (t I ) and a stop interval (t S ).   
   
   
       10 . Heating burner in accordance with  claim 9 ,
 characterized in that   an air flow sensor is provided to determine the delivery volume from the air delivery device.   
   
   
       11 . Heating burner in accordance with  claim 1   characterized in that   the control device adjusts the actuators, more particularly the fuel delivery device and the air delivery device such that a pilot flame is present outside the combustion interval (t B ).   
   
   
       12 . Heating burner in accordance with  claim 11 ,
 characterized in that   the control device is designed such that it controls the fuel delivery device to supply the pilot flame outside the combustion interval (t B ) such that less than 1%, preferably less than 1 pro mille, of the maximum delivery capacity of the fuel delivery device is delivered.