초록 ▼

A cooling structure for a construction machine is disclosed to minimize the occurrence of a turbulent flow of air, provide a better cooling ability, and reduce surroundings noise. A recess is formed in a portion of an engine cover above a front portion of an engine, and exhaust ports are formed in a

A cooling structure for a construction machine is disclosed to minimize the occurrence of a turbulent flow of air, provide a better cooling ability, and reduce surroundings noise. A recess is formed in a portion of an engine cover above a front portion of an engine, and exhaust ports are formed in a slope of the recess on the same side as a fan. A space having a proper size is thereby defined among a portion of the engine cover, which is positioned radially outside the fan, the exhaust ports and the fan. That portion of the engine cover constitutes a first guide for guiding the cooling air just after having passed the fan, as a laminar flow, to the exhaust ports, and an opposite slope of the recess constitutes a second guide for guiding the cooling air discharged through the exhaust ports as a laminar flow. A distal end of the second guide is positioned lower than the first guide, and the exhaust ports each provided between the distal end of the second guide and a distal end of the first guide are positioned across the cooling air supplied from the fan as a laminar flow.

대표청구항 ▼

[ Having thus described the invention, what is claimed is:] [1.] In a construction machine having a frame; an engine mounted on said frame in an engine compartment, said engine including a rotatable fan to draw ambient air over a radiator to cool fluid circulated therethrough, said ambient air being

[ Having thus described the invention, what is claimed is:] [1.] In a construction machine having a frame; an engine mounted on said frame in an engine compartment, said engine including a rotatable fan to draw ambient air over a radiator to cool fluid circulated therethrough, said ambient air being discharged from said radiator through a cover member forming an upper portion of said engine compartment, the improvement comprising:exhaust ports formed in a portion of said engine cover above a front portion of said engine;a first guide positioned radially outside said fan for guiding the ambient air just after having passed said fan;a second guide positioned above the front portion of said engine for guiding the ambient air discharged through said exhaust ports, said second guide having a distal end positioned lower than said first guide, said exhaust ports being each positioned between the distal end of said second guide and a distal end of said first guide across which the ambient air flows; andwherein a recess is formed in the portion of said engine cover above the front portion of said engine, said exhaust ports are formed in a slope of said recess on the same side of the engine cover as said fan, and an opposite slope of said recess serves as said second guide.