Patent ID: 9068504
Filing Date: 2015-06-30
Classification: B23D,F02B

Abstract:
1. An engine-operated machine comprising: suction means being driven by an engine to suction air; an air cleaner case housing an air filter filtrating the air supplied to the engine; a dust separating device having a substantially tubular shape, the dust separating device having an air inlet provided in a lateral surface on a first end side in a longitudinal direction so as to be inclined in a predetermined direction with respect to a radial direction in a longitudinal-direction view and to penetrate through inside and outside of the lateral surface, a first discharge opening provided in the lateral surface on a second end side in the longitudinal direction, and a second discharge opening provided at the second end so as to be separated from the lateral surface on the second end side; a first air discharge passage having a first end connected to the suction means and having a second end connected to the first discharge opening; and a second air discharge passage having a first end connected to the air cleaner case on an upstream side of the air filter and having a second end connected to the second discharge opening, wherein the dust separating device includes a suction part provided with an air inlet, a separation part provided with a first discharge opening, and a coupling part provided between the suction part and the separation part, and a cross-sectional area of the coupling part in the longitudinal direction gradually increases from the air inlet side toward the first discharge opening side.