Heating Device

Abstract

The invention relates to a heating device comprising heating elements that are disposed in tubes and bear against contact plates that extend out of the tubes. According to the invention, the tubes are composed of a plurality of extruded parts that are disposed transversely to the inflow direction of a fluid to be heated, and are held next to each other by a holder.

What is claimed is: 
     
         1 . A heating device comprising
 a plurality of tubes;   contact plates extending out of each tube; and   heating elements disposed in the tubes and bearing against the contact plates; and   wherein the tubes are composed of a plurality of extruded parts that are disposed transversely to the inflow direction of a fluid to be heated, and are held next to each other by a holder.   
     
     
         2 . The heating device according to  claim 1 , wherein at least one power rail is present, to which a plurality of contact plates is connected, and which leads from the contact plates connected to it, to the holder. 
     
     
         3 . The heating device according to  claim 1 , wherein the holder is a frame that encloses the tubes. 
     
     
         4 . The heating device according to  claim 3 , wherein the longitudinal direction of the tubes extends transversely to the plane of the frame. 
     
     
         5 . The heating device according to  claim 2 , wherein the holder has a holder part to which the at least one power rail leads and which extends transversely to the power rail. 
     
     
         6 . The heating device according to  claim 2 , wherein the at least one power rail extends between two diametrically opposed holder parts. 
     
     
         7 . The heating device according to  claim 6 , wherein the at least one power rail is plugged into at least one of the two diametrically opposed holder parts. 
     
     
         8 . The heating device according to  claim 2 , wherein each heating element bears against two contact plates that extend out of tubes at different ends and are contacted by different power rails. 
     
     
         9 . The heating device according to  claim 2 , wherein the holder carries a supply rail that supplies the power rails with current. 
     
     
         10 . The heating device according to  claim 8 , wherein the holder carries two supply rails, wherein one of the two supply rails electrically contacts, via connected power rails, the contact plates extending out of tube ends on one side of the heating device, and the other supply rail electrically contacts the contact plates extending out of the tube ends on the other side of the heating device. 
     
     
         11 . The heating device according to  claim 10 , wherein the two supply rails are carried by the same holder part. 
     
     
         12 . The heating device according to  claim 2 , wherein the power rails are designed as sheet-metal strips enclosed in plastic. 
     
     
         13 . The heating device according to  claim 1 , wherein the contact plates are angled on their end that extends out of tubes. 
     
     
         14 . The heating device according to  claim 1 , wherein neighboring extruded parts do not touch each other. 
     
     
         15 . The heating device according to  claim 1 , wherein the extruded parts are plugged into the holder. 
     
     
         16 . The heating device according to  claim 1 , wherein the extruded parts are fastened to holder parts that extend transversely to the holder part from which the power rail extends. 
     
     
         17 . The heating device according to  claim 1 , wherein the extruded tubes include heat-dissipation fins. 
     
     
         18 . The heating device according to  claim 1 , wherein the holder carries a printed circuit board to which the at least one power rail is connected. 
     
     
         19 . The heating device according to  claim 1 , wherein the extruded parts are held by the holder in a clamped manner. 
     
     
         20 . The heating device according to  claim 1 , wherein each contact plate carries an assembly frame.