| 摘要 |
1,024,977. Plate heat exchangers. A.P.V. CO. Ltd. May 12, 1964 [July 11, 1963], No. 27584/63. Heading F4S. A heat exchanger comprises a plurality of plates 1, 2, 3, 4, with interplate gaskets in peripheral recesses 1a, 2a, 3a, 4a, the outer walls of recesses 1a and 3a in plates 1 and 3 being folded down to define secondary recesses 1d and 3d opening in the opposite direction to the gasket recesses, a portion of the gaskets in recesses 2a and 4a having a raised section 7 located in the secondary recess to provide additional gasket support against the pressure in the flow space between the plates. The gaskets have alternating sections 5 and 6 of equal length, Figs. 5 and 6 (not shown), the type 5 being plain and the type 6 having a raised portion 7 adjacent the outer edge 9 which is corrugated. The gasket recesses are adapted to accept this change of shape so that the roles of plates 1 and 3 are interchanged with those of 2 and 4 at intervals round the periphery of the plates.
|
