| 摘要 |
<p>1,133,217. Plate heat exchangers. SOC. ANON. ANDRE CITROEN. 20 Dec., 1965 [31 Dec., 1964], No. 53859/65. Heading F4S. A heat exchanger consists of a corrugated sheet constituting either a secondary surface element in a fluid passage (Figs. 1 to 3), or a heat transfer wall separating two fluids, said sheet being mounted on a plate so that the corrugations make continuous line contact along their lengths with the plate, the sheet being additionally corrugated in a direction transverse to the main corrugations such that the lines of contact between the sheet and the plate are sinuous. The heat exchanging fluids may be liquids or gases and the relative fluid flow may be cross-flow or contra-flow. The drawings show a contra-flow arrangement in which each corrugated sheet 6 is arranged between two plates 7, 7a respectively. The plates 7 comprise an outer casing of the heat exchanger completed by end plates 11. The plates 7a are shorter than the plates 7 to provide header spaces as shown, and are spaced apart by transverse walls 9 arranged as in Fig. 6. The walls 9 define inlet and outlet passages 10, 10a respectively for one of the fluids. The end walls 11 are apertured to provide inlet and outlet openings 8 for the fluid X flowing on one side of each corrugated sheet 6. The other fluid Y enters the passages 10 from one side of the heat exchanger and passes from these into the internal header space (the right-hand space between plates 7a and end wall 11 in Figs. 4 and 6), from whence the fluid divides into streams which flow over the corrugated sheet surfaces to the other header (left hand side of Figs. 4 and 6) whence the fluid streams recombine and flow into the passages 10a to be discharged from the other side face of the heat exchanger as shown. Other forms described (Figs. 8-10) comprise a single corrugated sheet (12) sandwiched between two plates (13, 14) or a single corrugated sheet mounted on one plate. In this latter form the corrugated sheet and plate provide only one set of heating fluid passages, the other fluid being a gas which is heated by contact with the corrugated sheet.</p> |
