BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description made with reference to the accompanying drawings. In the drawings:
FIG. 1 is a schematic perspective view showing a heat exchanger according to a first embodiment of the present invention;
FIG. 2 is an enlarged view showing tubes and corrugated fins of the heat exchanger in FIG. 1;
FIG. 3 is a perspective view showing a part of the corrugated fin;
FIG. 4A is a schematic side view showing a connection part between the tube and the corrugated fin, and FIG. 4B is a schematic side view showing a conventional connection part between a tube and a corrugated fin;
FIG. 5 is a side view showing a part of the corrugated fin;
FIG. 6 is a graph showing a relationship between a height of an end louver and a curvature radius of a bending portion between a flat portion and a peak portion;
FIG. 7 is a graph showing a relationship between a height of an aperture formed in the end louver and a water retention amount;
FIG. 8 is a graph showing a relationship between a height of a center louver and a water retention amount or a frosting time;
FIG. 9 is a schematic view showing a water-discharging path;
FIG. 10 is a perspective view showing a part of a corrugated fin according to a second embodiment;
FIG. 11A is a perspective view showing a part of a corrugated fin according to a third embodiment, and FIG. 11B is a plan view showing the corrugated fin and tubes;
FIG. 12 is a perspective view showing a part of a corrugated fin according to a fourth embodiment;
FIG. 13 is a perspective view showing a part of a corrugated fin according to a fifth embodiment; and
FIG. 14 is a plan view showing a corrugated fin and tubes according to a sixth embodiment.
Patent Application
20070199686
