Radiant heating apparatus

Abstract

A solution should be created in a radiant heating apparatus that economically makes available in a constructively simple manner a simplified and improved possibility of monitoring the radiant heating apparatus. This is achieved with a radiant heating apparatus for a furnace system in which a monitoring apparatus for determining a current pressure is provided in the combustion air line and/or in the combustion gas line immediately in front of the entrance into the housing of the at least one burner which apparatus outputs the currently determined pressure to a burner control. The burner control is designed in such a manner that it compares the currently determined pressure with a predetermined limit value and/or it compares a pressure difference Δp formed from a currently determined pressure and a pressure of a corresponding collector line with a predetermined limit value. Furthermore, the burner control outputs a signal indicating a leakage of the ceramic radiant heating pipe if the currently determined pressure drops below the predetermined limit value and/or if the pressure difference Δp formed from currently determined pressure and a pressure of a corresponding collector line exceeds a predetermined limit value.

1 - 8 . (canceled) 
     
     
         9 . A process for monitoring a radiant heating apparatus for the indirect heating or cooling of a furnace system, in particular an industrial furnace, which radiant heating apparatus comprises at least one burner that is arranged inside a ceramic radiant heating tube and is connected via a combustion gas line to a gas collector line and via a combustion air line to an air collector line,
 whereby the at least one burner is supplied with combustion air and combustion gas for the indirect heating or the at least one burner is supplied exclusively with cooling air for the indirect cooling,   whereby during indirect heating of the furnace system the pressure of combustion air conducted in the combustion air line and the pressure of combustion gas conducted in the combustion gas line are lowered to a predetermined pressure until supplied to the at least one burner,   whereby the supplying of the combustion air and/or of the combustion gas to the at least one burner is monitored by a monitoring apparatus arranged in the combustion air line and/or in the combustion gas line,   whereby a current pressure of the combustion air and/or of the combustion gas is determined by the monitoring apparatus immediately before they are supplied to the at least one burner, and   whereby a signal indicating a leakage of the ceramic radiant heating pipe is emitted if the current pressure determined by the monitoring apparatus drops below a predetermined limit value and/or if a pressure difference Δp formed from currently determined pressure and a pressure of a corresponding collector line exceeds a predetermined limit value.   
     
     
         10 . The process according to  claim 9 , in which a value of 10 mbar or less is used as the limit value for the currently determined pressure. 
     
     
         11 . The process according to  claim 10 , in which a value of 5 mbar or less is used as the limit value for the currently determined pressure. 
     
     
         12 . The process according to  claim 11 , in which a value of 3 mbar or less is used as the limit value for the currently determined pressure. 
     
     
         13 . The process according to  claim 12 , in which a value of 2 mbar or less is used as the limit value for the currently determined pressure. 
     
     
         14 . The process according to  claim 9 , in which a value of 70 mbar or less is used as the limit value for the formed pressure difference Δp. 
     
     
         15 . The process according to  claim 14 , in which a value of 50 mbar or less is used as the limit value for the formed pressure difference Δp. 
     
     
         16 . The process according to  claim 15 , in which a value of 30 mbar or less is used as the limit value for the formed pressure difference Δp. 
     
     
         17 . A radiant heating apparatus for a furnace system, in particular for an industrial furnace, with at least one burner that is arranged inside a ceramic radiant heating tube and is connected via a combustion gas line to a gas collector line and via a combustion air line to an air collector line,
 whereby a monitoring apparatus for determining a current pressure is provided in the combustion air line and/or in the combustion gas line directly in front of the entrance into the housing of the at least one burner and outputs the currently determined pressure to a burner control,   whereby the monitoring apparatus and/or the burner control is/are designed in such a manner that they compare the currently determined pressure with a predetermined limit value and/or they compare a pressure difference Δp formed from a currently determined pressure and a pressure of a corresponding collector line with a predetermined limit value, and   whereby the monitoring apparatus and/or the burner control output(s) a signal indicating a leakage of the ceramic radiant heating pipe if the currently determined pressure drops below the predetermined limit value and/or if the pressure difference Δp formed from currently determined pressure and a pressure of a corresponding collector line exceeds a predetermined limit value.   
     
     
         18 . The radiant heating apparatus according to  claim 17 , whereby the monitoring apparatus comprises a pressure switch. 
     
     
         19 . The radiant heating apparatus according to  claim 17 , whereby a recuperator is present in the ceramic radiant heating pipe that uses part of the exhaust gas flowing in the ceramic radiant heating pipe for preheating the combustion air. 
     
     
         20 . The radiant heating apparatus according to  claim 17 , whereby the limit value for the currently determined pressure is 10 mbar or less. 
     
     
         21 . The radiant heating apparatus according to  claim 20 , whereby the limit value for the currently determined pressure is 5 mbar or less. 
     
     
         22 . The radiant heating apparatus according to  claim 21 , whereby the limit value for the currently determined pressure is 3 mbar or less. 
     
     
         23 . The radiant heating apparatus according to  claim 22 , whereby the limit value for the currently determined pressure is 2 mbar or less. 
     
     
         24 . The radiant heating apparatus according to  claim 17 , whereby the limit value for the formed pressure difference Δp is 70 mbar or less. 
     
     
         25 . The radiant heating apparatus according to  claim 24 , whereby the limit value for the formed pressure difference Δp is 50 mbar or less. 
     
     
         26 . The radiant heating apparatus according to  claim 25 , whereby the limit value for the formed pressure difference Δp is 30 mbar or less.