To achieve the objects described above, the cleaner according to some embodiments of the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker and a detection unit detecting noise or vibration, and configured to cause an output of the speaker to be reduced a level of the noise of at least one frequency range of 1500 Hz or less the noise generated when the fan module is operated, based on the detection signal of the detection unit. wherein the main body includes an exhaust outlet through which air in the airflow path is exhausted and a sound outlet through which the sound of the speaker is exhausted, wherein the exhaust outlet and the sound outlet look the same direction relative to the main body.

The cleaner according to the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from the air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker, and configured to control the output of the speaker to increase a level of the noise of at least one range of the frequency range of 2000 Hz or more and 8000 Hz or less.

A floor cleaning machine including an electrochemical cell having an anode, a cathode, an electrolyte, an electrochemical cell controller in at least one of unilateral and/or bilateral communication with at least one of the anode, the cathode, and the electrolyte, and wherein the electrochemical cell is associated with at least one of a recovery tank sub-assembly, a vacuum fan sub-assembly, a solution tank sub-assembly, a solution flow sub-assembly, a control console sub-assembly, at least one of a frame and wheel sub-assembly and a frame and transaxle sub-assembly, a scrub head sub-assembly, a scrub head lift sub-assembly, and a squeegee sub-assembly.

An automatically moving robotic vacuum cleaner has a housing and a filter chamber for receiving suction material. The housing has a housing opening that is formed on the upper side of the housing and has a displaceable sealing element, which can be displaced from a closed position that closes the housing opening into a released position that releases the housing opening, so as to enable access to the filter chamber. The closure element can be mounted on the housing in a linearly movable manner. There is a detection device that is set up to detect the presence of an external vacuum cleaning apparatus to be connected with the housing opening in the area of the housing opening of the robotic vacuum cleaner. The robotic vacuum cleaner also has a control device that is set up to control an opening of the housing opening upon detection of the external vacuum cleaning apparatus.

The filter can receive timely maintenance. A dust collection system includes a hammer drill, a dust collection attachment connected to the hammer drill and including a dust collection motor that generates a suction force and a filter that catches sucked dust, and a dust collection controller that monitors a state of the dust collection attachment to determine a time to perform maintenance.

Disclosed is a device structure for automatically opening and closing a wastewater tank valve of a cleaning machine, including a cleaning machine body which is provided with a water-air separation chamber at a top and is detachably mounted with a wastewater tank at a bottom, the water-air separation chamber is provided with one end connected to a water drawing pipe and the other end connected to a main motor having a suction function, and provided with a drain port at a bottom end, the wastewater tank is provided with a wastewater tank inlet at a top end, and the drain port is communicated with the wastewater tank inlet. The wastewater tank inlet is cooperated with a water closing valve which is connected to a drive device, the drive device is capable of driving the water closing valve to open and close the wastewater tank inlet.

A vibrating air filter of a robotic vacuum comprising an electromagnet, a permanent magnet and an air filter. The electromagnet may comprise a metal wire and a power source connected to a first end of the wire. The power source may deliver electric pulses in alternating directions through the wire creating an electromagnet. The metal wire may be coiled around or placed adjacent to the permanent magnet and a second end of the wire may be connected to an air filter. Interaction between the magnetic fields of the electromagnet and permanent magnet may cause vibration of the wire and hence connected filter. Vibration of the filter may loosen any dust and debris latched onto the filter that may be shed into a dust bin of the vacuum.

A surface cleaning apparatus has a first air flow path extending from a dirty air inlet to a clean air outlet with a suction motor and an air treatment member positioned in the first air flow path. A second air flow path extends from an ambient air inlet to a secondary air outlet. An energy storage chamber having at least one energy storage member is positioned in the second air flow path. Ambient air can be drawn through the second air flow path to promote cooling of the energy storage members. A fan unit and or a venture can be used to draw ambient air into the second airflow path.

Embodiments of the disclosure relate to a robot cleaner and a controlling method thereof, and more particularly, to a robot cleaner and a traveling algorithm of a robot cleaner having an improved structure. A robot cleaner of the disclosure includes a brush unit having a suction flow path, a body unit configured to have a driving device, and be coupled to the brush unit to be rotatable with respect to the brush unit and a redirection device configured to rotate the body unit relative to the brush unit, and the redirection device includes a rotation guide extending along an inner circumferential surface of the brush unit, a rotation driving source disposed in the body unit and generating power, and a power transmission member which moves along the rotation guide by the power transmitted from the rotation driving source and rotates the body unit with respect to the brush unit.

A navigation control system for an autonomous vehicle comprises a transmitter and an autonomous vehicle. The transmitter comprises an emitter for emitting at least one signal, a power source for powering the emitter, a device for capturing wireless energy to charge the power source, and a printed circuit board for converting the captured wireless energy to a form for charging the power source. The autonomous vehicle operates within a working area and comprises a receiver for detecting the at least one signal emitted by the emitter, and a processor for determining a relative location of the autonomous vehicle within the working area based on the signal emitted by the emitter.