Heating device

Abstract

A heating apparatus for an exhaust train comprises a flow-conducting device for guiding an exhaust gas flow along a flow path; a burner that is arranged outside the flow-conducting device and that is configured to generate heating gases during the combustion of a fuel; and a supply device that is configured to supply the heating gases generated by the burner to the exhaust gas flow, which is guided through the flow-conducting device, via a heating gas inlet that is formed in a wall of the flow-conducting device. The supply device has a channel that is fastened to an outer side of the flow-conducting device in a manner covering the heating gas inlet and open towards it, wherein the channel extends along a peripheral direction running around the flow path and in so doing engages around the flow-conducting device while forming an interruption.

1 - 14 . (canceled) 
     
     
         15 . A heating apparatus for an exhaust train, said heating apparatus comprising a flow-conducting device for guiding an exhaust gas flow along a flow path; a burner that is arranged outside the flow-conducting device and that is configured to generate heating gases during the combustion of a fuel; and a supply device that is configured to supply the heating gases generated by the burner to the exhaust gas flow, which is guided through the flow-conducting device, via a heating gas inlet that is formed in a wall of the flow-conducting device,
 wherein the supply device has a channel that is fastened to an outer side of the flow-conducting device in a manner covering the heating gas inlet and open towards it, wherein the channel extends along a peripheral direction running around the flow path and in so doing engages around the flow-conducting device while forming an interruption.   
     
     
         16 . The heating apparatus in accordance with  claim 15 ,
 wherein the channel is completely open towards the flow-conducting device.   
     
     
         17 . The heating apparatus in accordance with  claim 15 ,
 wherein the channel is formed in the manner of a half shell and/or is formed in one piece.   
     
     
         18 . The heating apparatus in accordance with  claim 15 ,
 wherein the interruption extends over a peripheral region of 1% to 50% of the total periphery of the flow-conducting device.   
     
     
         19 . The heating apparatus in accordance with  claim 18 ,
 wherein the interruption extends over a peripheral region of 5% to 30% of the total periphery of the flow-conducting device.   
     
     
         20 . The heating apparatus in accordance with  claim 15 ,
 wherein the channel has a supply opening that is connected to the burner and that is centrally arranged at the channel with respect to the extent of the channel in the peripheral direction.   
     
     
         21 . The heating apparatus in accordance with  claim 15 ,
 wherein the channel has a supply opening that is connected to the burner and that is arranged at an end region of the channel with respect to the extent of the channel in the peripheral direction.   
     
     
         22 . The heating apparatus in accordance with  claim 15 ,
 wherein the heating gas inlet comprises a gap extending in the peripheral direction.   
     
     
         23 . The heating apparatus in accordance with  claim 22 ,
 wherein the gap extends at least substantially along the total length of the channel.   
     
     
         24 . A heating apparatus for an exhaust train, comprising a flow-conducting device for guiding an exhaust gas flow along a flow path; a burner that is arranged outside the flow-conducting device and that is configured to generate heating gases during the combustion of a fuel; and a supply device that is configured to supply the heating gases generated by the burner to the exhaust gas flow, which is guided through the flow-conducting device, via a heating gas inlet that is formed in a wall of the flow-conducting device,
 wherein the supply device has a channel that is fastened to an outer side of the flow-conducting device in a manner covering the heating gas inlet and open towards it, wherein the channel extends along a peripheral direction running around the flow path, and wherein the heating gas inlet comprises a plurality of individual openings spaced apart from one another.   
     
     
         25 . The heating apparatus in accordance with  claim 24 , wherein the channel extends along a peripheral direction running around the flow path and in so doing engages around the flow-conducting device while forming an interruption. 
     
     
         26 . The heating apparatus in accordance with  claim 24 ,
 wherein the heating gas inlet comprises a regular hole row that extends in the peripheral direction along the total channel.   
     
     
         27 . The heating apparatus in accordance with  claim 24 ,
 wherein at least one individual opening is designed as an elongate hole or all the individual openings are designed as elongate holes.   
     
     
         28 . The heating apparatus in accordance with  claim 27 ,
 wherein the elongate holes extend transversely to the flow path.   
     
     
         29 . The heating apparatus in accordance with  claim 27 ,
 wherein the elongate holes extend alternately longitudinally and transversely to the flow path.   
     
     
         30 . The heating apparatus in accordance with  claim 27 ,
 wherein the elongate holes have at least two different sizes.   
     
     
         31 . The heating apparatus in accordance with  claim 24 ,
 wherein the channel forms a closed ring.