| 摘要 |
<p>The invention relates to a spiral heat exchanger including a spiral body (2) formed by at least two spiral sheet (10a,10b) wounded to form the spiral body forming at least a first spiral-shaped flow channel for a first medium and a second spiral- shaped flow channel for a second medium, wherein the spiral body is enclosed by a substantially cylindrical shell being provided with connecting elements communicating with the first flow channel and the second flow channel, where the at least two spiral sheet also forms the center (3) of the spiral body, where each spiral sheet comprise a first sheet portion (12a,12b) and where the flow channels comprise a second sheet portion (13a,13b), and where the first sheet portion is made of a material that is thicker than the second sheet portion.</p> |
