| 摘要 |
PURPOSE: An axial fan for refrigerator is provided to improve efficiency and reduce noise by optimally design a shape of a blade constituting the axial fan. CONSTITUTION: Five blades(120) are radially formed on a periphery of a hub(110). Ratio of a diameter(I) of the hub and an outer diameter(O) of an axial fan(100) is 28.4 +/- 1%. Ratio of width of the blades and the outer diameter of the axial fan is 27.8 +/- 1%. The outer diameter of the axial fan is 24.5 +/- 1mm. Maximum camber position is 0.65 to be evenly distributed from hub side positions of the blades to tip side positions of the blades, when leading edges of the blades are 0 and trailing edges of the blades are 1. When the hub side positions of the blades are 0, the tip side positions of the blades are 1, Maximum cambers are 5.0 +/- 0.5% on 0 positions, 6.0% on 0.375 positions and 7.5 +/- 0.5% on 1 positions to be curvedly distributed.
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