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1. (WO2019030482) DIRT SEPARATOR FOR A VACUUM CLEANER
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CLAIMS

1. A dirt separator for a vacuum cleaner, the dirt separator comprising:

a chamber having an inlet through which dirt-laden fluid enters the chamber, and an outlet through which cleansed fluid exits the chamber; and

a disc located at the outlet, the disc being arranged to rotate about a rotational axis and comprising holes through which the cleansed fluid passes,

wherein the chamber is delimited by a bottom wall and a side wall, the bottom wall is moveable relative to the side wall between an open position and a closed position, and the inlet is defined by an end of an inlet duct attached to the side wall.

2. A dirt separator as claimed in claim 1, wherein the outlet is located at or adjacent a top of the chamber, and the bottom wall delimits a bottom of the chamber.

3. A dirt separator as claimed in claim 1 or 2, wherein the dirt-laden fluid entering the chamber is directed at the disc.

4. A dirt separator as claimed in claim 3, wherein the dirt-laden fluid entering the chamber is directed at the centre of the disc.

5. A dirt separator as claimed in any one of the preceding claims, wherein the inlet duct extends linearly within the chamber.

6. A dirt separator as claimed in any one of the preceding claims, wherein the bottom wall pivots relative to the side wall.

7. A dirt separator as claimed in any one of the preceding claims, wherein an opposite end of the inlet duct is attachable to different attachments of the vacuum cleaner.

8. A dirt separator as claimed in any one of the preceding claims, wherein a separation distance between a centre of the inlet and a centre of the disc is no greater than the diameter of the inlet.

9. A dirt separator as claimed in any one of the preceding claims, wherein the diameter of the disc is greater than the diameter of the inlet.

10. A dirt separator as claimed in any one of the preceding claims, wherein the disc has a total open area greater than that of the inlet.

11. A dirt separator as claimed in any one of the preceding claims, wherein the disc comprises an inner region surrounded by an outer region, the diameter of the inner region is no less than the diameter of the inlet, and the inner region has an open area less than that of the outer region.

12. A dirt separator as claimed in claim 11, wherein the inner region has an open area less than 10% and the outer region has an open area greater than 20%.

13. A dirt separator as claimed in claim 11 or 12, wherein the holes are formed in the outer region and the inner region is non-perforated.

14. A dirt separator as claimed in any one of the preceding claims, wherein the disc is formed of metal.

15. A dirt separator as claimed in any one of the preceding claims, wherein the dirt separator comprises an electric motor for driving the disc about the rotational axis.

16. A handheld vacuum cleaner comprising a dirt separator as claimed in any one of the preceding claims.

17. A stick vacuum cleaner comprising a handheld unit attached to a cleaner head by an elongate tube, wherein the handheld unit comprises a dirt separator as claimed in any one of claims 1 to 15, and the elongate tube extends along an axis parallel to the rotational axis.