Device for exchanging heat

Abstract

A device for exchanging heat comprising at least one fluid inlet ( 2 ), at least one header pipe ( 4 ), a plurality of flat pipes ( 5 ) at least at one end being in flow connection with the header pipe ( 4 ), a fluid outlet ( 9 ) and at least one frame element ( 21, 23 ) being in connection with the header pipe ( 4 ) wherein said connection between the frame element ( 21, 23 ) and the header pipe ( 4 ) is a frictional connection due to auxiliary equipment ( 33 ).

1 . A device for exchanging heat comprising at least one fluid inlet, at least one header pipe, a plurality of flat pipes being, at least at one end, in flow connection with the header pipe, a fluid outlet and at least one frame element being in connection with the header pipe wherein said connection between the frame element and the header pipe is a frictional connection by means of auxiliary equipment. 
     
     
         2 . Device according to  claim 1 , characterized in that the header pipe comprises at least one projection which contacts the frame element and at least in one direction prevents movement of the frame element relative the header pipe. 
     
     
         3 . Device according to  claim 2 , characterized in that the projection is a finger protruding from the header pipe. 
     
     
         4 . Device according to  claim 2 , characterized in that the projection comprises at least one curved portion. 
     
     
         5 . Device according to  claim 1 , characterized in that the frame element comprises at least one projection which contacts the header pipe and prevents movement at least in one direction of the frame element relative the header pipe. 
     
     
         6 . Device according to  claim 1 , characterized in that the frame element comprises an end portion fitted to the geometrical shape of the header pipe. 
     
     
         7 . Device according to  claim 1 , characterized in that the header pipe is not closed by the frame element. 
     
     
         8 . Device according to  claim 1 , characterized in that the frame element comprises hook means connected to a portion of the header pipe. 
     
     
         9 . Device according to  claim 1 , characterized in that the frame element comprises a curved section. 
     
     
         10 . Device according to  claim 1 , characterized in that the frame element comprises an end portion running parallel to and laterally offset from the center region of the frame element. 
     
     
         11 . Device according to  claim 1 , characterized in that the device comprises two header pipes positioned at the respective ends of the flat pipes and flow connected to them. 
     
     
         12 . Device according to  claim 11 , characterized in that the frame element is connected with both header pipes wherein said connections are frictional due to auxiliary equipment. 
     
     
         13 . Device according to  claim 1 , characterized in that the frame element comprises a plurality of projections along its length. 
     
     
         14 . Device according to  claim 1 , characterized in that the frame element is positioned at an end portion of the header pipe. 
     
     
         15 . Device according to  claim 1 , characterized in that two frame elements are provided. 
     
     
         16 . Device according to  claim 15 , characterized in that the frame elements are positioned at end portions of the header pipe. 
     
     
         17 . A device for exchanging heat comprising a fluid inlet, a header pipe, a plurality of flat pipes being at least at one end in flow connection with the header pipe, a header and a fluid outlet wherein the longitudinal direction of the header is substantially parallel to the longitudinal direction of the flat pipes. 
     
     
         18 . Device according to  claim 17 , characterized in that the plurality of flat pipes generates a plane wherein the header is positioned parallel relative said plane. 
     
     
         19 . Device according to  claim 17 , characterized in that the longitudinal direction of the header extends to an end region of the header pipe. 
     
     
         20 . Device according to  claim 17 , characterized in that the device comprises a frame element connected to the header pipe. 
     
     
         21 . Device according to  claim 17 , characterized in that the header is frictionally connected to the frame element due to auxiliary equipment. 
     
     
         22 . Device according to  claim 17 , characterized, in that the header is positioned behind the plane of the flat tubes as seen in the direction of air flow through the device. 
     
     
         23 . Device according to  claim 17 , characterized in that the header is positioned in front of the plane of the flat tubes as seen in the direction of air flow through the device. 
     
     
         24 . Device according to  claim 17 , characterized in that at least the inlet or the outlet are positioned in an end region of the header pipe. 
     
     
         25 . Method of manufacturing a device for exchanging heat in particular for motor vehicles comprising the following steps:
 arranging a plurality of flat pipes in flow-connection with at least one header pipe;   arranging at least one frame element at the header pipe such that at least in one section said frame element contacts auxiliary equipment provided at the header pipe;   braze welding the header pipe at least to the flat pipes and preferably also at least to the frame element.