Internal Heat Exchanger for an Air Conditioning System

Abstract

An internal heat exchanger for an air conditioning system, comprising an outer tube and a line structure arranged inside the outer tube defining a meandering serpentine first flow channel, with the second flow channel formed between the outer tube and the line structure. The first flow channel is formed by extruded components joined together to form a unitary structure inserted into the second flow channel which includes facing channel elements defining a serpentine path and two shells adhered to the channel elements defining the sides of the flow path and having fins extending perpendicular to the base disposed in the second flow channel.

1 . An internal heat exchanger for an air conditioning system, comprising an outer tube and a line structure arranged inside the outer tube, wherein the line structure includes a first flow channel, and wherein a second flow channel is formed between the outer tube and line structure, characterized in that the first flow channel has a meandering configuration. 
     
     
         2 . The internal heat exchanger according to  claim 1 , wherein said first flow channel has a serpentine configuration. 
     
     
         3 . The internal heat exchanger according to  claim 1 , characterized in that the outside of the line structure includes heat conducting ribs. 
     
     
         4 . The internal heat exchanger according to  claim 3 , characterized in that the heat conducting ribs extend until into the region of the inner wall of the outer tube. 
     
     
         5 . The internal heat exchanger according to  claim 1 , characterized in that the line structure consists of multiple parts. 
     
     
         6 . The internal heat exchanger according to  claim 1 , characterized in that the line structure interconnected by way of channel elements includes shells and are provided with heat conducting ribs. 
     
     
         7 . The internal heat exchanger according to  claim 6 , characterized in that there are two channel elements which are comb-shaped with projections defining a series of parallel walls joined by semi-circular curved walls. 
     
     
         8 . The internal heat exchanger according to  claim 7 , wherein said projection of one channel element is spaced between the projection of the other channel element. 
     
     
         9 . The internal heat exchanger according to  claim 8 , characterized in that the elements of the line structure consist of metallic material. 
     
     
         10 . The internal heat exchanger according to  claim 9 , characterized in that the elements of the line structure are firmly bonded with each other. 
     
     
         11 . The internal heat exchanger according to  claim 1 , characterized in that the line structure is inserted into the outer tube. 
     
     
         12 . The internal heat exchanger according to  claim 1 , characterized in that faces of the line structure accommodate pipe sockets, wherein the pipe sockets are connected with the first flow channel so as to be able to carry a flow. 
     
     
         13 . The internal heat exchanger according to  claim 1 , characterized in that faces of the outer tube are sealed with a respective lid, wherein the lids exhibit pipe joints, which are connected with the first flow channel and the second flow channel. 
     
     
         14 . The internal heat exchanger according to  claim 1 , characterized in that the inner diameter of the outer tube measures between 25 mm and 35 mm. 
     
     
         15 . The internal heat exchanger according to  claim 1 , characterized in that the width of the first flow channel measures between 3.5 mm and 5.5 mm. 
     
     
         16 . The internal heat exchanger according to  claim 1 , characterized in that the first flow channel includes at least sections having a cross section that is rectangular. 
     
     
         17 . The internal heat exchanger according to  claim 1 , characterized in that it is designed for use in a mobile air conditioning system. 
     
     
         18 . The internal heat exchanger according to  claim 8 , wherein said first flow channel has a cross section that is rectangular.