| 摘要 |
The invention relates to a spiral heat exchanger including a central cylinder ( 5 ) and at least two spiral sheets ( 6, 7 ). The sheets extend from the cylinder to form a first spiral-shaped flow channel ( 8 ) for a first medium and a second spiral-shaped flow channel ( 9 ) for a second medium. The cylinder forms an inner space within the cylinder. The cylinder includes a first opening ( 11 ) communicating with the first flow channel and a second opening ( 12 ) communicating with the second flow channel. A pipe ( 14 ) extends into the inner space of the cylinder. A first communication channel, communicating with the first flow channel via the first opening, is formed within the pipe. A second communication channel, communicating with the second flow channel via the second opening, is formed in the inner space outside the pipe.
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