Dust collector, vacuum cleaner, and cleaning device

A cleaning device comprising:

• a vacuum cleaner including:
• a dust collecting casing including an air inlet, an air outlet, and a foreign substance discharge port,
• a cyclone module inside the dust collecting casing, wherein the dust collecting casing and the cyclone module are configured so that air and foreign substances are drawn into the dust collecting casing through the air inlet, the foreign substances drawn into the dust collecting casing are separated from the air drawn into the dust collecting casing by the cyclone module, the separated foreign substances are dischargeable from the dust collecting casing through the foreign substance discharge port, and the air from which the foreign substances are separated is expelled through the air outlet, and
• a discharge door configured to be switchable between an open position in which the foreign substance discharge port is opened and a closed position in which the foreign substance discharge port is closed,
• wherein
• the cyclone module includes:
• a fixed part fixed to the dust collecting casing,
• a rotating part, and
• at least one bearing structure rotatably supporting the rotating part with respect to the fixed part, and
• the dust collecting casing, the cyclone module, and the discharge door are configured so that,
• when the discharge door is in the open position, the rotating part is in a rotating state in which the rotating part is rotatable with respect to the fixed part via the at least one bearing structure and air flow generated in the dust collecting casing, and rotation of the rotating part via the at least one bearing structure and the air flow causes foreign substances adhering to a surface of the cyclone module to be separated from the surface of the cyclone module and then discharged through the foreign substance discharge port, and,
• when the discharge door is in the closed position, the rotating part is in a locked state in which the rotating part is prevented from rotating with respect to the fixed part;
• and
• a cleaner station including:
• a docking part to which the vacuum cleaner is connectable,
• a suction unit configured to provide a suction force to generate the air flow in the dust collecting casing to rotate the rotating part when the vacuum cleaner is connected to the docking part, the discharge door is in the open position, and the rotating part is in the rotating state, so that the foreign substances separated from the air and the foreign substances separated from the surface of the cyclone module in the dust collecting casing are discharged through the foreign substance discharge port to the cleaner station, and
• a collector configured to collect the foreign substances discharged to the cleaner station.