| 摘要 |
A plate evaporator or condenser has a plurality of plates forming a plate stack and defining alternating chambers for a first fluid to be evaporated and a second fluid to be condensed. Each plate has embossed thereon a plurality of parallel spaced beads projecting into the chambers for the first fluid and are oriented parallel to the plate length. Mutually aligned beads of adjoining plates are in contact with one another. Each plate also has, embossed thereon, a plurality of spaced knubs situated between the beads and projecting into the chambers for the second fluid. Mutually aligned knubs of adjoining plates are in contact with one another. The plates further have first and second apertures provided in opposite end zones and extend substantially throughout the plate width. Mutually aligned respective first and second apertures of adjoining plates form first and second flow channels for the first fluid. The first and second flow channels are in communication with the chambers for the first fluid. Each plate has, in the end zones between the first and second apertures, first and second lateral enlargements projecting beyond the rectangular plate outline. Third and fourth apertures are provided, respectively, in the first and second lateral enlargements. Mutually aligned respective third and fourth apertures of adjoining plates form third and fourth flow channels for the second fluid. The third and fourth flow channels are in communication with the chambers for the second fluid. |
