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US 9,068,504 B2Granted
Engine operated machine
AssigneeHitachi Koki Co., Ltd.
InventorsTomomasa Nishikawa, Fumikazu Hirasawa
Life of this patent
Estimating the term…
Abstract
An engine-operated device includes a dust separating device. An air inlet provided on a first end side of the dust separating device. A first discharge opening is provided in the lateral surface on a second end side of the longitudinal direction, and a second discharge opening is provided to be separated from the first discharge opening. A first connecting passage is connected between the first discharge opening and the rotor cover of a magneto-rotor, and a second connecting passage is connected between an upstream side of an air cleaner case and the second discharge opening.
Claims14
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.
4 more elements
An engine-operated machine comprising:
- a cooling fan attached to an output shaft of an engine driving a bit tool and generating cooling air of a cylinder;
- an air cleaner case housing an air filter filtrating the air suctioned to the cylinder of the engine;
- and
- a dust separating device in a substantially cylindrical shape having a suction part carrying out suction while rotating the air by an air inlet, a main body part moving garbage or dust molecules mixed in the air to an outer peripheral side by centrifugal force by swirling the introduced air at a high speed in a container, a first discharge part discharging the air in a center part at an end of the main body, and a second discharge part discharging the air in a peripheral part of the main body,
- the first discharge part being connected to the suction part of the cooling fan, the second discharge part being connected to the air cleaner case,
- the longitudinal direction of a cylinder housing of the dust separating device being disposed to be substantially parallel to a crank shaft of the engine.
3 more elements
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 air inlet comprises a plurality of air inlets.
4 more elements
Dependencies are inferred from the claim text.