Vacuum cleaner

1. A vacuum cleaner, comprising:

a main body; and

a dust separator mounted on the main body, wherein the dust separator comprises a dust separation device that separates dust in air and a dust storage device having at least one compression member disposed therein, the at least one compression member having a rotational shaft and a blade formed at an outer peripheral surface of the rotational shaft, wherein the dust storage device comprises a dust storage tank detachably mounted to the main body, the dust storage tank comprising a partitioning device that partitions the dust storage tank into a compression chamber, in which the at least one compression member is disposed, and a storage chamber, and wherein the partitioning device is provided with a communication hole that communicates the compression space with the storage space.

2. The vacuum cleaner of claim 1 , wherein the compression chamber is defined between an inner surface of the partitioning device and an inner peripheral surface of the dust tank and wherein the storage chamber is defined between an outer surface of the partitioning device and the inner peripheral surface of the dust tank.

3. The vacuum cleaner of claim 1 , wherein the blade has a spiral shape.

4. The vacuum cleaner of claim 1 , wherein dust separated from the dust separation device is moved into the compression chamber.

5. The vacuum cleaner of claim 1 , further comprising a drive provided outside the dust tank to drive the at least one compression member.

6. The vacuum cleaner of claim 5 , further comprising a transferring device that connects the drive to the at least one compression member.

7. The vacuum cleaner of claim 6 , wherein the drive is rotatably connected to the transferring device, and manipulated by a user.

8. The vacuum cleaner of claim 1 , wherein the storage chamber surrounds the compression chamber.