| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan for radiator cooling having covering ratio optimizing air capacity, noise, shaft output and the like, and improving blast efficiency. SOLUTION: This fan 1 for radiator cooling is provided in a downstream of a radiator 2 and on an upstream side of an engine 3 of a drive source, and is provided with a blade part 5 rotatable by drive of the engine 3 and a ring part 6 provided on an outer circumference of the blade part 5, and is constructed to keep ratio C<SB>R</SB>of a length in an fore-and-aft direction of a part of the ring part 6 covered by the blade tip part 9 to a length in a fore-and-aft direction of the blade tip part 9 in a range of 0.67-0.80. COPYRIGHT: (C)2005,JPO&NCIPI
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