| 摘要 |
A heat exchanger of the present invention includes: a shell (20); a first pipe (30) that guides first fluid into the shell; a plurality of spiral pipe portions (74-77) through which second fluid that exchanges heat with the first fluid passes and that have different distances from a central axis (VX); and a second pipe (40) that guides the first fluid to the outside of the shell, in which an inner spiral pipe portion (74) that is closest to the central axis and an outer spiral pipe portion (77) that is farthest from the central axis in the spiral pipe portions are connected by a first connection tube (78), and a plurality of intermediate spiral pipes (75,76) that is farther from the central axis than the inner spiral pipe portion and closer to the central axis than the outer spiral pipe portion is connected by a second connection tube (79), so that it is possible to connect the spiral pipe portions while minimizing the number of connection tubes and to minimize reduction of performance that may be generated when the difference in length of a plurality of paths is large, by minimizing the difference in length of the paths formed by the spiral pipe portions and the connection tubes. |
