Vacuum cleaner

• US 9,681,786 B2
• Filed: 09/02/2015
• Issued: 06/20/2017
• Est. Priority Date: 09/03/2014
• Status: Active Grant

• Current Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Original Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Inventors: Mitchell, Joanne Katy, Luetchford, Peter Graham, Patel, Ketan
• Primary Examiner(s): NGUYEN, DUNG V
• Application Number:
  US14/843,421
• Publication Number:
  US 20160058259A1
• Time in Patent Office: 657 Days
• CPC Class Codes: A47L 2201/00 Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
• CPC Class Codes: A47L 9/1608 Cyclonic chamber constructions
• CPC Class Codes: A47L 9/1633 Concentric cyclones
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles

Abstract

A vacuum cleaner comprising a main body and a cyclonic separating apparatus. The separating apparatus comprises a dirt collection chamber and a baffle arrangement, and is mounted within the main body such that a first part of the dirt collection chamber is obscured and a second part of the dirt collection chamber is visible during normal use. The baffle arrangement is positioned within the dirt collection chamber such that, during use, an airflow moving within the dirt collection chamber is disrupted by the baffle arrangement causing dirt to collect preferentially in the second part.

Claims

1. A vacuum cleaner comprising a main body and a cyclonic separating apparatus, the separating apparatus comprising a dirt collection chamber and a baffle arrangement, wherein the separating apparatus is mounted within the main body such that a first part of the dirt collection chamber is obscured and a second part of the dirt collection chamber is visible, and the baffle arrangement is positioned within the dirt collection chamber such that, during use, an airflow moving within the dirt collection chamber is disrupted by the baffle arrangement causing dirt to collect preferentially in the second part.

2. The vacuum cleaner of claim 1, wherein the dirt collection chamber is cylindrical and is bounded by an outer wall and a base, the baffle arrangement comprises a plurality of baffles, and each baffle extends radially along the base.

3. The vacuum cleaner of claim 2, wherein the baffles are positioned such that the airflow moving around the dirt collection chamber is caused to follow a sinuous path through the baffle arrangement.

4. The vacuum cleaner of claim 1, wherein the separating apparatus comprises a first stage and a second stage, the second stage is located downstream from the first stage, the first stage comprises the dirt collection chamber, the second stage comprises a further dirt collection chamber, and the dirt collection chamber surrounds the further dirt collection chamber.

5. The vacuum cleaner of claim 4, wherein the dirt collection chamber is cylindrical and is bounded by an inner wall, an outer wall and a base, the further dirt collection chamber is bounded by the base and the inner wall, the baffle arrangement comprises a plurality of baffles, and each baffle extends radially between the inner and outer walls of the dirt collection chamber.

6. The vacuum cleaner of claim 1, wherein the dirt collection chamber is cylindrical, the baffle arrangement is located in a sector of the dirt collection chamber, and the sector spans an angle of between 90°

and 140°

.

7. The vacuum cleaner of claim 1, wherein the baffle arrangement comprises between three and six baffles.

8. The vacuum cleaner of claim 1, wherein the dirt collection chamber is cylindrical, the baffle arrangement comprises three baffles, the first and third baffles span an angle of between 90°

and 140°

, and the second baffle is positioned between the first and third baffles.

9. The vacuum cleaner of claim 1, wherein the vacuum cleaner is a robotic vacuum cleaner.