Heat Exchanger

Abstract

The invention relates to a heat exchanger provided with channels ( 3.1, 3.2 ) which are separated by separating walls, and which are cross-flown in an alternating manner to the counter flow by one or the other flow mediums (W, K). Said heat exchanger is formed by a spiral-shaped, wound, sheet-like material ( 1 ). The windings ( 2.1, 2.2 , . . . ) of the spiral form the separating walls between the channels ( 3.1, 3.2 , . . . ). The channels ( 3.1, 3.2 , . . . ) are also separated from each other by separating webs ( 4.1, 4.2 , . . . ) which are arranged between adjacent windings ( 2.1, 2.2 , . . . ).

1 . Heat exchanger comprising channels ( 3 . 1 ,  3 . 2 , . . . ,  13 . 1 ,  13 . 2 ) separated by means of separation walls, which are cross flown in an alternating manner to the counter flow by the one or the other flow medium (K, W), characterized by at least one spiral-shaped wound sheet-like material ( 1 ,  10 ,  11 ), wherein the windings ( 2 . 1 ,  2 . 2 , . . . ) of the spiral form the separating walls and the channels ( 3 . 1 ,  3 . 2 , . . . ,  13 . 1 ,  13 . 2 ,  20 . 1 ,  20 . 2 ,  20 . 3 ,  21 . 1 ,  21 . 2 ,  21 . 3 ) are formed by the distances between the individual windings ( 2 . 1 ,  2 . 2 , . . . ). 
   
   
       2 . Heat exchanger as claimed in  claim 1 , wherein the channels ( 3 . 1 ,  3 . 2 , . . . ) are separated from one another by separation webs ( 4 . 1 ,  4 . 2 , . . . ) between adjacent windings. 
   
   
       3 . Heat exchanger as claimed in  claim 1 , characterized by at least one pair of spiral-shaped sheets ( 10 ,  11 ) wound at a spacing to each other, wherein the channel ( 13 . 1 ) or the channels ( 20 . 1 ,  20 . 1 ,  20 . 3 ) for the one flow medium (W, K) is formed by the distance between the two sheets ( 10 ,  11 ) of the pair, and the channel ( 13 . 2 ) or the channels ( 21 . 1 ,  21 . 2 ,  21 . 3 ) for the other flow medium (K, W) is formed by the distance between the windings of the sheet pair ( 10 ,  11 ). 
   
   
       4 . Heat exchanger as claimed in  claim 1 , wherein the individual channels ( 3 . 1 ,  3 . 2 , . . . ) at a front end (A, B) of the heat exchanger are closed through a partial circle ( 5 . 1 ,  5 . 2 , . . . ) and are open at the other front end (B, A) through a partial circle ( 6 . 1 ,  6 . 2 , . . . ). 
   
   
       5 . Heat exchanger as claimed in  claim 2 , wherein the separation webs ( 4 . 1 ,  4 . 2 , . . . ) extend in parallel to the polar axis (P) of the spiral. 
   
   
       6 . Heat exchanger as claimed in  claim 5 , wherein the closed partial circle ( 5 . 1 ,  5 . 2 , . . . ) of a channel ( 3 . 1 ,  3 . 2 , . . . ) at the one front end (A, B) is opposed by an open partial circle ( 6 . 1 ,  6 . 2 , . . . ) at the other front end (B, A). 
   
   
       7 . Heat exchanger as claimed in  claim 4 , wherein the closed partial circle ( 5 . 1 ,  5 . 2 , . . . ) and the open partial circles ( 6 . 1 ,  6 . 2 , . . . ) are formed by a semi circle. 
   
   
       8 . Heat exchanger as claimed in  claim 2 , wherein the separation webs ( 4 . 1 ,  4 . 2 , . . . ) extend in a screw-shaped manner around the polar axis (P) of the spiral. 
   
   
       9 . Heat exchanger as claimed in  claim 1 , wherein the separation webs ( 4 . 1 ,  4 . 2 , . . . ) are arranged in a manner adjoining one another between the windings ( 2 . 1 ,  2 . 2 , . . . ). 
   
   
       10 . Heat exchanger as claimed in  claim 1 , wherein one single separation web ( 4 . 1 ,  4 . 2 , . . . ) is arranged between two windings ( 2 . 1 ,  2 . 2 , . . . ). 
   
   
       11 . Heat exchanger as claimed in  claim 1 , wherein the windings ( 2 . 1 ,  2 . 2 , . . . ) are connected to one another punctually ( 6 ). 
   
   
       12 . Heat exchanger as claimed in  claim 1 , wherein the spiral-shaped wound, sheet-like material ( 1 ) encloses a bypass channel ( 9 ) in the center of the heat exchanger. 
   
   
       13 . Heat exchanger as claimed in  claim 3 , wherein the two sheets ( 10 ,  11 ) of each pair are connected to one another according to a first predetermined angle (a) and the inner sheet ( 11 ) of a winding to the outer sheet ( 10 ) of the adjoining inner winding according to a second predetermined angle (b), which is offset with respect to the first predetermined angle (a), to form the channels ( 20 . 1 ,  20 . 2 ,  20 . 3 ) for the one flow medium (K) and the channels ( 21 . 1 ,  21 . 2 ,  21 . 3 ) for the other flow medium (Wk). 
   
   
       14 . Heat exchanger as claimed in  claim 13 , wherein the first angle (a) and the second angle (b) are equally large. 
   
   
       15 . Heat exchanger as claimed in  claim 13 , wherein the angle about which the connections ( 24 ) between the inner sheet ( 11 ) of a winding with the outer sheet ( 10 ) of the respective inner winding are offset with respect to the connections of the two sheets ( 10 ,  11 ) of each pair is half of the first angle (a). 
   
   
       16 . Heat exchanger as claimed in  claim 13 , wherein the connections between the sheet pairs ( 10 ,  11 ) are formed by constrictions ( 23 ) of the sheet pairs. 
   
   
       17 . Heat exchanger as claimed in  claim 13 , wherein the channels ( 20 . 1 ,  20 . 2 ,  20 . 3 ) for the one flow medium (K) and the channels ( 21 . 1 ,  21 . 2 ,  21 . 3 ) for the other flow medium (Wk) to the polar axis (P) are arranged radially behind one another.