Patent ID: 6926206

Claim:
Air heating device for integration into an air-conducting housing arrangement ( 12 ; 12 a ), of a vehicle air conditioner, including: a burner region ( 18 ; 18 a ), a heat exchanger region with a heat exchanger body ( 30 ; 30 a ); constituted in the heat exchanger body ( 30 ; 30 a ), a combustion exhaust gas conducting space ( 32 ; 32 a ), in which hot combustion exhaust gases flow, produced by combustion in the burner region ( 18 ; 18 a ), on an outer side of the heat exchanger body ( 30 ; 30 a ), a heat transfer rib arrangement with numerous heat transfer ribs ( 80 , 82 ; 80 a ) around which air conducted in the housing arrangement ( 12 , 12 a ) flows, at least a portion of the heat transfer ribs ( 80 , 82 ; 80 a ) being constituted separately from the heat exchanger body ( 30 ; 30 a ) and kept in heat transfer contact with this, wherein the heat exchanger body ( 30 ; 30 a ) is elongate in the direction of a body longitudinal axis (L), and wherein at least a portion of the heat transfer ribs ( 80 , 82 ; 80 a ) for the air to be heated provides a heat transfer surface ( 90 , 92 ; 90 a , 92 a ) substantially orthogonal to the body longitudinal axis (L), and wherein the heat transfer rib arrangement includes at least one heat transfer rib module ( 78 ; 78 a ), and wherein the at least one heat transfer rib module ( 78 ; 78 a ) includes a coupling region ( 84 ; 118 a ) constituted for thermal coupling to the heat exchanger body ( 30 ; 30 a ), and also at least one heat transfer rib ( 80 , 82 ; 80 a ) adjoining the coupling region ( 84 ; 118 a ).