ENGINE COOLING STRUCTURE OF PORTABLE AIR BLOWING WORK MACHINE

摘要

PROBLEM TO BE SOLVED: To provide an engine cooling structure of a portable air blowing work machine capable of maintaining cooling capacity by securing the air blowing volume, by reducing mixing of dust in air blowing, while enhancing the cooling capacity by large capacity air blowing caused by an air blowing fan.;SOLUTION: The centrifugal air blowing fan 22 is rotatingly driven by an air-cooled small engine. Cooling air is made to flow in the air-cooled small engine side from the inside of an air blowing fan cover 17 covering this centrifugal air blowing fan 22. An air introducing hole 27 is formed by facing a swirling flow passage 26 in the air blowing fan cover, and a projection part 28 is positioned and arranged just near the windward side of the swirling flow passage of this air introducing hole.;COPYRIGHT: (C)2007,JPO&INPIT