Vacuum cleaner having an ion generator

10 The vacuum cleaner of any one of claim 2, 5 or 8, wherein the ion generator includes DC high voltage device and one or more acicular electrodes, the acicular electrodes being installed in a suction air passage for making the suction air flow of the electric blower go therethrough.

A suction head for use in a vacuum cleaner comprising:

• a wall part forming one or more opening portions, the opening portions being opened in a downward direction for sucking dust particles;
• and
• a bristle packet positioned on the wall part, the bristle packet including bristle clusters having different electrification ranks, wherein the bristle clusters are rubbed against each other to produce negative ions when the bristle packet is rubbed against a target cleaning surface.

A suction head for use in a vacuum cleaner comprising:

• a first and a second bristle packet each being positioned in one or more opening portions or at peripheries of the opening portions, the opening portions being opened in a downward direction for sucking dust particles, and the first and the second bristle packet respectively including bristle clusters having different electrification ranks, wherein the first and the second bristle packet rotate to be rubbed against each other to thereby produce negative ions.

A suction head for use in a vacuum cleaner comprising:

• a plurality of brush-like packets, each being positioned in one or more opening portions or at peripheries of the opening portions, the opening portions being opened in a downward direction for sucking dust particles and the plurality of bristle packets respectively including brushes of certain electrification ranks, wherein the plurality of the bristle packet come into contact with a target cleaning surface and at least one of the bristle packet rotates to be rubbed against another bristle packet having a different electrification rank, so that the other bristle packet produces negative ions.