| 摘要 |
A heat exchanger in which heat is extracted from a first gas stream at a first temperature and donated to a second gas stream at a second temperature lower than the first temperature by heat conduction through stationary metallic plates (12), in which heat exchanger the plates (12) are corrugated in cross-section and are crushed around the perimeter, respective pairs of plates (12) being welded around their perimeters in the crushed region to form cells (22), the crushed region (30, 32) of the plates of a respective cell (22) being spaced apart at opposite ends to form headers (21, 23) which extend at an angle to the direction of the corrugations (17) of the corrugated plates (12), which headers (21, 23) are closed at one end and are open at the opposite end, and form, for the respective cell (22), the entry and exit ports for one of the gas streams, the open end of each header (21, 23) being attached by means of, welding to the wall of a manifold system (44) , such welding being the only means of attachment and rigid restraint of the individual cells (22) to the rest of the heat exchanger or to each other. |
