| 摘要 |
PURPOSE:To improve the heat exchanging efficiency and miniaturize the title device by arranging small diameter pipes in a grid pattern and displacing the arrangement of the small diameter pipes in adjacent pipe groups by a half pitch. CONSTITUTION:Small diameter pipes 31 are all arranged in the A-A direction, and small diameter pipes 34 are all arranged in the B-B direction. Pipe groups so arranged are stacked in layers to form a grid pattern. Relative to the positioning of a pipe group 31A, a pipe group 31B is so positioned that its small diameter pipes 31 may be positioned nearly middle of the pitch L1 of the small diameter pipes 31 of 31A. The same is true with the pipe groups 34A and 34B. Therefore, the fluid flow contacts successively 31C 34B 31B 34 A 31A, and changes its course in a complex manner to contact all the small diameter pipes circumferentially and axially. Since the fluid stays longer in contact with the small diameter pipes as it flows at a constant speed, the heat exchanging efficiency can be significantly improve, and, because functional parts that perform the heat exchange are built in a compact form by the small pipe groups, miniaturization becomes feasible. |
