Cooling fan module incorporates two impellers, with the number of blades of the first impeller being larger than that of the second impeller

摘要

The cooling fan module incorporates impellers (11, 11') respectively with (111, 111') blades, with the number of blades of the impeller (11) being larger than that of the impeller (11'). As a result, the air pressure and volume are increased simply and effectively.