| 摘要 |
PROBLEM TO BE SOLVED: To provide a working machine cooling device having simple construction for uniforming the flow of cooling air to improve the cooling efficiency. SOLUTION: The cooling device comprises a heat exchanger 3 mounted on a working machine, and centrifugal fans 4, 5 arranged on the upstream side of cooling air beyond the heat exchanger 3 for supplying the cooling air to the cooling core of the heat exchanger 3 to cool heat medium inside the cooling core. The plurality of centrifugal fans 4, 5 are prepared which have a plurality of blades arranged into cylindrical outlines and impellers 4a, 5a rotatable around the cylindrical shafts. The plurality of centrifugal fans 4, 5 are arranged with the shafts parallel to the cooling core and equally distant from the cooling core. The cooling core is wholly covered. COPYRIGHT: (C)2009,JPO&INPIT
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