A robot cleaner comprising: a cleaner body including a wheel unit and a controller controlling driving of the wheel unit; a suction unit disposed to protrude from the cleaner body, the suction unit sucking air containing dust; and a sensing unit disposed at the front of the cleaner body in which the suction unit is disposed, wherein at least one portion of the sensing unit is disposed to overlap with the suction unit in the top-bottom direction of the cleaner body.

A robot cleaner comprising: a cleaner body including a controller, the cleaner body having a dust container accommodation part formed therein; a wheel unit mounted in the cleaner body, the wheel unit of which driving is controlled by the controller; a suction unit mounted in the cleaner body to suck air containing dust; a dust container detachably coupled to the dust container accommodation part, the dust container filtering and collecting dust from sucked air; and a dust container cover including a hinge part rotatably coupled to the cleaner body, the dust container cover detachably coupled to the dust container to cover a top surface of the dust container.

A autonomous cleaner includes: a cleaner body including a wheel unit for autonomous traveling; a suction unit provided to protrude from one side of the cleaner body, the suction unit sucking air containing dust; a sensing unit provided at the one side of the cleaner body; a dust container accommodated in a dust container accommodation part formed at the other side of the cleaner body, the dust container collecting dust filtered from sucked air; and a dust container cover hinge-coupled to the cleaner body to be rotatable, the dust container cover being provided to cover a top surface of the dust container when the dust container cover is coupled to the dust container.

A dust collector, including a casing, a dust collection system arranged in the casing, an impeller (100) and a permanent magnet type brushless direct current motor (200). The impeller (100) is arranged in the casing and located downstream of the dust collection system. The permanent magnet type brushless direct current motor (200) is connected to the impeller (100) and located at a side, far away from the dust collection system, of the impeller (100). The permanent magnet type brushless direct current motor (200) includes a stator (2), a rotor (3) and a block-shaped permanent magnet (4). The rotor (3) and the stator (2) are arranged coaxially, the rotor (3) can rotate relative to the stator (2), and the permanent magnet (4) is fixed to the rotor (3).

The present disclosure relates to an autonomous cleaning device and a wind path structure for use in the autonomous cleaning device. The wind path structure includes: a cleaning component for cleaning cleaned objects, a cleaned object storage container for storing the cleaned objects, and a power component for generating a wind, the cleaning component, the cleaned object storage container, and the power component being arranged sequentially in a moving direction of the autonomous cleaning device; a first-level wind duct located between the cleaning component and the cleaned object storage container, wherein the first-level wind duct is coupled with the power component such that the cleaned objects are delivered to the cleaned object storage container by the wind generated by the power component; and a second-level wind duct located between the cleaned object storage container and the power component, wherein the second-level wind duct has a bell-mouth shape and includes an inner wall, the inner wall including an arc-shaped segment facing toward the wind coming from the cleaned object storage container to direct the wind to an air inlet of the power component.

A vacuum cleaner includes a hand-held device and the hand-held device has a housing defining an air inlet and an air blowing port at a front end thereof, the air blowing port being disposed adjacent to the air inlet; a dust cup disposed in the housing and connected to the air inlet; and an electric motor defining a motor chamber in communication with the dust cup, in which an airflow entering through the air inlet flows out of the air blowing port after flowing through the dust cup and the electric motor.

A hand-held vacuum cleaner (100) is provided, including a dust cup (2), the dust cup includes a first cyclone, a cyclone assembly, and a filtration member. The cyclone assembly includes a plurality of second cyclones (22), a guiding channel (23) is defined between two of the plurality of the second cyclones (22), the guiding channel (23) is in communication with the first air vent and an airflow is guided to an outer circumference of the cyclone assembly by the guiding channel (23) along a tangent line to a circumferential wall of the second cyclone (22) adjacent to the guiding channel (23), each second cyclone (22) has an air inducing notch (222), each second cyclone (22) is provided with an air guiding pipe (221), the filtration member is disposed along the outer circumference of the cyclone assembly, and the airflow in the outer circumference of the cyclone assembly tangentially enters the second cyclone (22) through the filtration member and the air inducing notch (222).

A cleaner includes: a main body that receives a suction motor; and a filter unit that is detachably coupled to the main body to filter air discharged from the suction motor and includes a ring-shaped filter and a filter frame that receives the ring-shaped filter, wherein the filter frame includes: an inner frame; an outer frame that defines a filter space for receiving the filter in cooperation with the inner frame; and a ring-shaped filter cover that connects the outer frame and the inner frame to each other and has one or more air openings.

A dust collector includes a primary cyclone unit to separate dust from air introduced from outside dust collector and a secondary cyclone unit includes axial cyclones which separate fine dust from air introduced in an axial direction. The secondary cyclone unit includes a first group of axial cyclones disposed along a circumference of a first circle so as to contact an inner circumferential surface of an inner case, and formed to be partially spaced apart from the inner circumferential surface of the inner case to form first passages therebetween; and a second group of axial cyclones disposed to contact each other along a circumference of a second circle concentric with the first circle and smaller than the first circle, and formed to contact some of the first group of axial cyclones and to be spaced apart from others of the first group axial cyclones to form second passages therebetween.

The dust collector, that may be used in vacuum cleaner, includes: a primary cyclone unit separating dust from air introduced from outside the dust collector; and a secondary cyclone unit defining axial cyclone bodies separating fine dust from air introduced in an axial direction. The secondary cyclone unit includes casings having outer walls around hollow portions; and a fine dust separating member disposed on the casings to form the axial cyclones. The fine dust separating member includes vortex finders disposed in the casings; band portions enclosing an outer circumferential surface of the vortex finders at a position spaced from the vortex finders, and having a shape corresponding to the casings so as to form the axial cyclones together with the casings; and guide vanes disposed between the vortex finders and the band portions and extending in a spiral direction to induce a rotational flow of air.