| 摘要 |
<p>A heat exchanger (3, fig 1) comprises a plurality of parallel spaced fins 20 which air passes over and between the spaces, a plurality of pipes 'P' passing through the fins 20 and communicating a heat exchange medium (fluid) inside, a plurality of cut and raised sections 22-24 provided on one side of the fins 20 and having a longest dimension (length) between the pipes 'P' and arranged orthogonal to a direction of flow of the air, and the longest dimension (length) of at least one of the cut and raised sections 22 - 24 having an undulating shape with a concave portion 22b in between two convex portions 22a, 22c. The heat exchanger (3) is used in an indoor ceiling mounted air conditioner (A), whereby air is drawn through an inlet (12) via a blower (6), with the air being blown over the heat exchanger (3) and passed out into a room (R) via an outlet (13). The undulating cut and raised sections 22 - 24 may be flat (castellated) or arcuated, and arranged in three lines (columns). The central line (column) of cut and raised sections (33, fig 5) may not have a concave portion so that its height is the same height as the concave cut and raised sections (32b, 34b) of the other two lines (columns) of cut and raised sections.</p> |
