| 摘要 |
<p>A plastic heat exchanger (10) which is simple and inexpensive. The heat exchanger (10) includes an outer duct (20) and a stack (22) of inner ducts (24,26,28), the inner ducts (24,26,28) for establishing a first flow path for cooling air or air to be cooled. Each inner duct (24,26,28) includes end portions which are stackable upon one another and a middle portion which has a reduced dimension. A seal is placed about each stack (22) of end portions and a second flow path for cooled air or cooling air is formed within the outer duct (20), between the seals and around the outside of the middle portions of the inner ducts (24,26,28). <IMAGE></p> |
