Patent ID: 8232660

Claim:
A soundproof enclosed generator comprising: an engine accommodated in a chassis and a generator body driven by the engine, wherein the chassis includes an electric equipment room accommodating an electric equipment, an engine room accommodating the engine and generator body, and a muffler room accommodating a muffler for silencing exhaust noise of the engine, wherein a cooling air from an inlet provided at a part of the electric equipment room is directed to the muffler room after passing through the engine room, and the cooling air is discharged through an outlet provided at a part of the muffler room, wherein a boundary between the engine room and the muffler room is defined by a partition plate and an outer wall of the muffler that directs the cooling air from the engine room to the muffler room with a change in air flow direction, and wherein the chassis further includes an exhaust duct having a wall surface that forms a pathway for exhausting the cooling air outputted from the outlet with a change in air flow direction, and an air supply duct having a wall surface that directs the cooling air from a lower portion of the chassis and through the inlet with a change in the air flow direction, both the exhaust duct and the air supply duct being detachably mounted and having a sound-absorption material disposed on an interior of the wall surfaces.