| 摘要 |
A heat exchanger, wherein two passages adjacent to each other through a wall surface are formed spirally and fluids are circulated through these passages, respectively, to perform a heat exchange through the wall surface, the upper and lower end faces of the spiral passages are covered with an end plate to seal tightly between the spiral passages and the end plates, a first passage inlet opening only to a first passage , a first passage outlet opening only to the first passage, a second passage inlet opening only to a second passage, and a second passage outlet opening only to the second passage are provided in the end plates; the inlets and outlets in each passage are open to the peripheral side of each of the spiral passages; a first fluid entering via the first passage inlet in to the passage is discharged from the first passage outlet after passing through the first passage by less than one round; and a second fluid entering from via second passage inlet in to the passage is discharged from the second passage outlet after passing through the second passage by less than one round; whereby, because the fluid entering via the opening part passes through the passage by only less than one round, a pressure loss can be reduced, a processing amount can be increased, and a power used for the processing can be saved. |
