| 摘要 |
PURPOSE:To contrive to reduce the size of a heat exchanger, by a method wherein small-pitch corrugated fins are fitted between meandering flat pipes so that the direction of corrugation is orthogonal to the meandering direction of the pipes, in a heat exchanger for exchanging heat between water and a refrigerant in a chiller unit such as a refrigerator or the like. CONSTITUTION:The flat pipe 8 having a rectangular cross section with height larger than width is placed in a container 4 in a meandering manner to constitute a fluid passage 7, the corrugated fins 10 with a pitch P made to be as small as possible are fitted into gaps between opposed parts of the pipe 8 constituting the passage 7 so that the direction of corrugation is orthogonal to the meadering direction of the passgae 7, and are welded to the pipe 8. Under such a constitution, a refrigerant is supplied into the container 4, exchanges heat will a fluid in the passage 7 through the fins 10, and bubbles generated by the evaporation of the refrigerant move upwards through gaps 12. Since the gaps 12 are narrow because of the small pitch P of the fins 10, the liquid refrigerant present in proximity to the fins 10 is subjected to an agitating action, and is brought into a forced convection condition. |
