| 摘要 |
PURPOSE: An axial fan for a refrigerator is provided to optimize a number of blades, a ratio between inner and outer diameters, a sweep angle, a pitch angle, a maximum camber ratio and the like for minimizing the wind blowing noise and simultaneously increasing amount of air to be inhaled or discharged, thereby satisfying the wind amount of the refrigerator with a low noise. CONSTITUTION: A refrigerator axial fan includes a hub(2) connected to a rotation shaft of a driving motor to rotate together with the rotation shaft, and four blades(4) mounted to the hub, wherein a ratio between an outer diameter of the hub and an outer diameter of the blades, that is, an inner diameter and an outer diameter of the fan is 0.2-0.3, the outer diameter(OD) is 145±1mm, the inner diameter(ID) is 33±1mm, a forward distance of the blades is 28.41±1mm, and a backward distance of the blades is 27.20±1mm.
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