Vacuum cleaner

A vacuum cleaner, comprising:

• a main body comprising a partition and a motor, said partition dividing said main body into an open section and a closed section, said partition having an interconnecting hole interconnecting said open section and said closed section, a discharging hole, and a connecting port communicating with said open section, said motor generating a force for sucking air from said connecting port;
• a dirt collecting unit detachably attached to said main body, said dirt collecting unit having an outlet communicating with said interconnecting hole, and an inlet;
• a filter separating a foreign material from air sucked from said inlet, said filter comprising a filtering body having an opening end and a closed end, at least one vane formed on the side of said filtering body, and a flange outwardly and perpendicularly bent from said open end, said flange having a ball hole;
• a rotation supporter comprising:
• a ball positioned in said ball hole,
• a supporting plate fixed to said dirt collecting unit, said supporting plate having a filter positioning hole and a first guiding groove;
• and
• a guiding ring attached to said supporting plate, said guiding ring having a portion spaced apart from said supporting plate, said guiding ring having a second guiding groove corresponding to said first guiding groove, said flange rotatably inserted between said supporting plate and said portion of said guiding ring, said first and second guiding grooves forming a route for guiding said ball;
• and
• a guiding member connected to said inlet, said guiding member guiding the air from said inlet to said vane so that the air rotates said filter.

A vacuum cleaner comprising:

• a main body having a port and a first hole;
• a dirt collecting unit removably mounted in said main body, said dirt collecting unit comprising a container and a cover, said container having a first opening, said cover removably covering said first opening, said cover having an inlet and an outlet, said inlet communicating with said port, said outlet communicating with said first hole;
• a filter comprising a filtering body having a second opening in a direction of said outlet, a vane, and a flange outwardly and transversely bent from said second opening;
• a plate attached to said cover, said plate having a second hole receiving said filtering body which is spaced apart from a bottom of said container, said plate supporting said flange of said filter free to rotate relative to said plate;
• and
• a guide connected to said inlet to communicate with said inlet, said guide guiding an air from said inlet to said vane so that a swirling current is formed within said dust collecting unit and said swirling current hits said vane to rotate said filter when the air is drawn between said inlet and said outlet.

A method for separating a dust from air drawn into a vacuum cleaner comprising a container for collecting the dust, a cover covering said container, a filter rotatably attached to said cover and a vane formed on said filter, the method comprising the steps of:

• drawing the dust contained in the air from an outside of the vacuum cleaner into an inside of the vacuum cleaner;
• directing obliquely the drawn dust and air into said container through an inlet formed through said cover;
• making a swirling momentum around said filter and imparting said momentum to said vane;
• rotating said filter by said momentum;
• filtering the dust from the air through said filter;
• and
• discharging the filtered air into an outlet formed through said cover and collecting the dust in said container.