| 摘要 |
The invention refers to a spiral heat exchanger including at least two spiral sheets (1, 2) extending along a respective spiral-shaped path about a common centre axis (x) and forming at least two spiral-shaped, substantially parallel flow channels (4, 5). Each flow channel (4, 5) permits a heat exchange fluid to flow in a substantially tangential direction with respect to the centre axis (x). Each flow channel includes a radially outer orifice, which forms an outlet or an inlet of the respective flow channel and which is located at a radially outer part of the respective flow channel and a radially inner orifice, which enables communication between the respective flow channel and a respective inlet/outlet chamber (13, 14). The centre axis (x) extends through the inlet/outlet chamber of the radially inner orifice. The spiral heat exchanger includes a centre body (3) extending around the centre axis (x) and being closed with respect to the flow channels (4, 5).
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