| 摘要 |
<P>PROBLEM TO BE SOLVED: To cool electric components by internal air circulation that can be ventilated by outside air in an engine working machine. Ž<P>SOLUTION: An engine-driven heat pump 1 with a power generation function where an engine 31, a generator 33 driven by the engine, and a power generation electric component box 40 related to the generator 33 are housed in its package has an external heat exchanger fan 21 for ventilating the entire package, an outside air suction port 51 and an outside air introduction duct 50 communicating with a lower part of the power generation electric component box 40 to be cooled, an outside air open port 42 at an upper part of the power generation electric component box 40, an inside air circulation duct 60 mounted adjacent to a back or side face of the power generation electric component box 40, and separated from the outside air suction port 51 and the outside air introduction duct 50, and an inside air circulation fan 85 of which the rated output is smaller than that of an outside air introduction fan at the inside air circulation duct 60. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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