| 摘要 |
A counter-current heat exchanger (1) for use in transferring heat from a hot water output to a cold water input in a plumbing system. The heat exchanger (1) has upper (2) and lower (3) plates with a heat exchange layer (4) therebetween. The heat exchange layer (4) has upper (4a) and lower (4b) sides. A first conduit (7) for the hot water output is formed between the upper side (4a) of the heat exchange layer 4 and the upper plate (2) and a second conduit (8) for the cold water input is formed between the lower side (4b) of the heat exchange layer and the lower plate (3). The first (7) and second (8) conduits are formed as spirals with the heat exchange layer (4) forming a boundary therebetween with the first conduit (7) positioned above the second conduit (8) and the heat exchange layer connected to the lower plate (3) via a sealed connection. |
