FIN TUBE HEAT EXCHANGER

摘要

A fin tube heat exchanger where both a heat transmission promotion effect and water discharge ability by guiding fins are simultaneously achieved. The fin tube heat exchanger (1) has heat transmission fins (2) placed in an airflow, and also has heat transmission tubes (3) inserted in the heat transmission fins (2) and placed in the direction substantially orthogonal to the direction of the airflow. A set of guiding fins (21a, 21b) and a set of guiding fins (21c, 21d) are formed by cutting and bending on the surface of each heat transmission fin (2), and the sets are on both sides, respectively, of each heat transmission tube (3). Each set of the guiding fins (21a, 21b)(21c, 21d) are linearly aligned from the upstream side toward the downstream side of the direction of the airflow. Lines (L₁, L₂) imaginarily connecting the guiding fins (21a, 21b) and the guiding fins (21c, 21d), respectively, are inclined relative to the direction of the airflow so as to guide airflow near each heat transmission tube (3) to the rear side of the direction of the airflow.