Heat exchanger for an annealing furnace for exchanging heat between two fluids

Abstract

The invention relates to a heat exchanger ( 1 ) for an annealing furnace for exchanging heat between two fluids, comprising a tubular profile which comprises heat exchanger fins on its outside jacket and which is associated on at least one face side ( 3 ) with a connecting flange ( 4 ) with at least one flow opening ( 8 ) for one of the two fluids, especially a hot gas. In order to provide advantageous constructional conditions it is proposed that the profile is a profile tube made of a folded sheet whose heat exchanger fins ( 7 ) aligned in the longitudinal direction of the profile are formed by the corrugated profile, especially the corrugated flanks, of the folded sheet.

1 . A heat exchanger for an annealing furnace for exchanging heat ( 1 ) between two fluids, comprising a tubular profile which comprises heat exchanger fins on its outside jacket and which is associated on at least one face side ( 3 ) with a connecting flange ( 4 ) with at least one flow opening ( 8 ) for one of the two fluids, especially a hot gas, wherein the profile is a profile tube ( 5 ) made of a folded sheet whose heat exchanger fins ( 7 ) aligned in the longitudinal direction of the profile are formed by the corrugated profile of the folded sheet. 
     
     
         2 . A heat exchanger according to  claim 1 , wherein turbulators are associated with the heat exchanger fins ( 7 ) on the inside of the profile tube jacket and/or the outside of the profile tube jacket. 
     
     
         3 . A heat exchanger according to  claim 1 , wherein a connecting flange ( 4 ) with at least one flow opening ( 8 ) for one of the two fluids is associated with the profile tube ( 5 ) at both face sides. 
     
     
         4 . A heat exchanger according to  claim 1 , wherein a connecting flange ( 4 ) with at least one flow opening ( 8 ) for one of the two fluids is associated with the profile tube ( 5 ) at one of the two face sides and the other of the two face sides is sealed. 
     
     
         5 . A heat exchanger according to  claim 4 , wherein a fluid tube ( 11 ) is provided which is coaxial to the profile tube axis ( 9 ) and which penetrates the connecting flange ( 4 ) and protrudes in the direction of the sealed face side.