Heat exchanger for a heating device

Abstract

A heat exchanger for a heating device, especially a fuel value heating device, made up of at least two vertically aligned members, and, in each case, one cover at the end face, which form a combustion chamber, and laterally border at least one heating gas flue, that leads from the combustion chamber in the upper region downwards to an exhaust collector in the lower region, having heat exchanger surfaces which, on the heating gas side, are provided with elements that increase the size of surfaces, especially in the form of ribs, optionally having at least one middle member between the two bordering outer members, and having a plurality of channels guiding the heating medium flowing through in parallel and/or in series in the members and/or the covers. The present system provides a compact heat exchanger for a heating device, and which is light and is especially suitable for the fuel value operation. In the present system, the members and the covers are connected to one another at the end face to form a block that is leak-proof to the heating gas, whose channels guiding the heating medium correspond to one another. The heat exchanger surfaces, acted upon by heating gas, of two adjacent members, over their length have a greater distance from one another in the middle, and thus form a wider heating gas flue than in the edge regions, the ribs each having a greater height in the middle and overlapping one another over a greater surface than in the edge regions.

1 - 14 . (canceled) 
     
     
         15 . A heat exchanger for a heating device, comprising:
 a plurality of elements that increase a surface size; and   at least two vertically aligned members, each having a cover at an end face, which form a combustion chamber, and which laterally border at least one heating gas flue, that leads from the combustion chamber in an upper region downwards to an exhaust collector in a lower region, having heat exchanger surfaces, which, on a heating gas side, have the plurality of elements that increase the surface size, which are in the form of ribs, and having a plurality of channels guiding a heating medium flowing through at least one of in parallel and in series at least one of in the members and the covers;   wherein the members and the covers are connected to one another at the end face to form a block that is leak-proof to the heating gas, whose channels, which guide the heating medium, correspond to one another.   
     
     
         16 . The heat exchanger of  claim 15 , wherein the heat exchanger surfaces, acted upon by the heating medium, which is a heating gas, of two adjacent members, over their length have a greater distance from one another in the middle, and thus form a wider heating gas flue than in the edge regions, the ribs each having a greater height in the middle and overlapping one another over a greater area than in the edge regions. 
     
     
         17 . The heat exchanger of  claim 15 , wherein the channels guiding the heating medium in the members each have a smaller cross section in the middle of a member and have a higher flow speed than in the edge regions. 
     
     
         18 . The heat exchanger of  claim 15 , wherein the cross section of the channels guiding the heating medium in the members each tapers down towards the middle of a member. 
     
     
         19 . The heat exchanger of  claim 15 , wherein a cross section of the channels guiding the heating medium, that diminishes towards the middle, essentially corresponds to a draft of the cores required for the production by casting technology, and wherein an angle of 1.5 degrees to 7 degrees with respect to a center axis of a channel is provided. 
     
     
         20 . The heat exchanger of  claim 15 , wherein the channels guiding the heating medium are connected to one another with the covers so that, through the entire block, starting from a lower recirculating connection, a flowing-through from below to above sets in to a feed connection that is mounted there, in counter flow to the heating gases; and the channels guiding the heating medium are connected to one another so that a plurality of planes have it flowing through them one after another. 
     
     
         21 . The heat exchanger of  claim 15 , wherein the channels guiding the heating medium are connected to the covers in such a way to one another that, starting from a recirculating connection a flow-through sets in, which exists first from a first lower plane via the lower region of the first outer member, a transfer into at least one middle member and a flowing through of the same in the lower region, a transfer into the second outer member and a flowing through in its lower region,
 wherein at that point there takes place a U-shaped vertical turn round in the member to a second plane into the middle region, and from this, a transfer into at least one middle member and a flow-through of same in the middle region, a transfer into the middle region of the first outer member, and there, a vertical turn round in the member into a third plane in the middle region, on this plane the flow being reversed to the second plane through the entire block and guided into the second outer member, and   wherein and starting from there, a U-shaped vertical turn round takes place in the member into a fourth plane in the upper region, on which there exists a direct connecting channel through an end face cover to the opposite first member and to a feed connection on the upper plane.   
     
     
         22 . The heat exchanger of  claim 15 , wherein the channels guiding the heating medium are connected to the covers so that, starting from a recirculating connection, a serpentine-like flow-through sets in in the first outer member, a transfer and also a serpentine-like flow-through sets in in at least one middle member and a transfer and a serpentine-like flow-through sets in in the second outer member having a connection to a feed connection. 
     
     
         23 . The heat exchanger of  claim 15 , wherein horizontal turn round zones and vertical turn round zones are in the covers and are made up of arches of the walls bordering on the turn round zones. 
     
     
         24 . The heat exchanger of  claim 23 , wherein the channels guiding the heating medium in the turn round zones have an at least equally large or a larger cross-section than in the edge regions of the members. 
     
     
         25 . The heat exchanger of  claim 15 , wherein in the upper region, a cover has no channels guiding the heating medium, and wherein the cover has a recess for installing an inspection glass and at least one of an ignition device and a monitoring device for a burner. 
     
     
         26 . The heat exchanger of  claim 15 , wherein the end faces of the members are flange-like and form a contact surface and sealing surface for an associated cover, and wherein the covers are connected at their two outer edges, at several points, to the two outer members. 
     
     
         27 . The heat exchanger of  claim 15 , wherein the elements enlarging the surfaces in the heating gas flue are horizontally interrupted, and are in the form of the ribs running in the vertical direction, in each case at least in the region between the first plane and the second plane of the channels guiding the heating medium. 
     
     
         28 . The heat exchanger of  claim 15 , wherein at least one of a venting nozzle, a gas/air mixture supply line and an exhaust gas line are integrated into one of a member and a cover. 
     
     
         29 . The heat exchanger of  claim 15 , wherein the heating device is a fuel value heating device. 
     
     
         30 . The heat exchanger of  claim 15 , further comprising:
 at least one middle member between two bordering outer members.