Vacuum cleaner dirt cup

• US 8,689,401 B2
• Filed: 02/16/2012
• Issued: 04/08/2014
• Est. Priority Date: 02/18/2011
• Status: Active Grant

• Current Assignee: Techtronic Floor Care Technology Limited (Techtronic Industries Company Limited)
• Original Assignee: Techtronic Floor Care Technology Limited (Techtronic Industries Company Limited)
• Inventors: Makarov, Sergey V., Kawolics, Raymond P., Charlton, Christopher M.
• Primary Examiner(s): Spisich, Mark
• Assistant Examiner(s): HORTON, ANDREW ALAN
• Application Number:
  US13/398,298
• Publication Number:
  US 20120210537A1
• Time in Patent Office: 782 Days
• Field of Search: 153/47, 153/53, 153/276, 153/277, 55D/IG.3, 553/37, 553/45, 553/46, 553/49
• US Class Current: 15/353
• CPC Class Codes: A47L 9/1608 Cyclonic chamber constructions
• CPC Class Codes: A47L 9/1625 for series flow
• CPC Class Codes: A47L 9/1641 for parallel flow
• CPC Class Codes: A47L 9/1691 Mounting or coupling means for cyclonic chamber or dust receptacles

Abstract

A vacuum cleaner including a dirt cup assembly including a first stage cyclonic separator operable to at least partially separate debris from an airflow, a second stage cyclonic separator downstream from the first stage cyclonic separator and operable to at least partially separate the debris from the airflow, a container having a sidewall that at least partially defines the first stage cyclonic separator, and a shroud having a lower perforated portion located within the container, and an upper portion that surrounds and receives the second stage cyclonic separator. The upper portion is located outside of the first container such that the upper portion forms an outside wall of the dirt cup above the sidewall of the container. The shroud further includes an intermediate portion between the lower portion and the upper portion, and the intermediate portion is coupled to the sidewall of the first container.

Claims

1. A vacuum cleaner comprising:

a suction source operable to generate an airflow;

a suction nozzle in fluid communication with the suction source and configured to remove debris from a surface using the airflow; and

a dirt cup assembly including,

a first stage cyclonic separator operable to at least partially separate the debris from the airflow,

a second stage cyclonic separator downstream from the first stage cyclonic separator and operable to at least partially separate the debris from the airflow, wherein the second stage cyclonic separator includes a plurality of cyclonic separators arranged in parallel,

a container having a sidewall that at least partially defines the first stage cyclonic separator,

a shroud having a lower perforated portion located within the container, an upper portion that surrounds and receives the second stage cyclonic separator substantially in its entirety, the upper portion located outside of the container such that the upper portion forms an outside wall of the dirt cup above the sidewall of the container, and an intermediate portion between the lower portion and the upper portion coupled to the sidewall of the container, and

a top lid attached to the upper portion of the shroud, wherein the second stage cyclonic separator is attached to the top lid such that the second stage cyclonic separator is removable from the shroud with the top lid.

2. The vacuum cleaner of claim 1, wherein the sidewall of the container is cylindrical.

3. The vacuum cleaner of claim 1, wherein the sidewall of the container includes a tangential air inlet of the first stage cyclonic separator.

4. The vacuum cleaner of claim 1, wherein the sidewall forms an outside wall of the dirt cup.

5. The vacuum cleaner of claim 1, wherein the container includes an upper end and a lower end, wherein the dirt cup assembly further includes a bottom lid coupled to the container to cover an opening at the lower end of the container.

6. The vacuum cleaner of claim 1, wherein the container further includes an upper end and a lower end, wherein the intermediate portion of the shroud is coupled to the sidewall of the container adjacent the upper end.

7. The vacuum cleaner of claim 6, wherein the intermediate portion of the shroud includes a locking tab, wherein the upper end of the container includes a locking cutout that receives the locking tab to couple the shroud and the container.

8. The vacuum cleaner of claim 1, wherein the upper portion of the shroud is substantially transparent.

9. The vacuum cleaner of claim 1, further comprising a foot including the suction nozzle;

and a handle pivotally coupled to the foot, wherein the dirt cup assembly is removably coupled to the handle.

10. The vacuum cleaner of claim 1, further comprising a skirt located within the container adjacent the lower portion of the shroud, wherein the skirt includes an opening, wherein the dirt cup assembly further includes a support that extends through the opening of the skirt and defines a central passageway that receives the debris separated from the airflow by the second cyclonic stage, and wherein the skirt couples the shroud and the support such that the skirt, the shroud, and the support are removable from the container as a single component.

11. A vacuum cleaner comprising:

a suction source operable to generate an airflow;

a suction nozzle in fluid communication with the suction source and configured to remove debris from a surface using the airflow;

a dirt cup assembly including,

a first stage cyclonic separator operable to at least partially separate the debris from the airflow,

a second stage cyclonic separator downstream from the first stage cyclonic separator and operable to at least partially separate the debris from the airflow, wherein the second stage cyclonic separator includes a plurality of cyclonic separators arranged in parallel,

a container having a sidewall that at least partially defines the first stage cyclonic separator,

a shroud having a lower perforated portion located within the container, an upper portion that surrounds and receives the second stage cyclonic separator, wherein the upper portion is substantially cylindrical, the upper portion located outside of the container such that the upper portion forms an outside wall of the dirt cup above the sidewall of the container, and an intermediate portion between the lower portion and the upper portion coupled to the sidewall of the container, and

a support that defines a central passageway that receives the debris separated from the airflow by the second cyclonic stage, and

a skirt located within the container adjacent the lower portion of the shroud, wherein the skirt includes an opening, wherein the support extends through the opening of the skirt, and wherein the skirt couples the shroud and the support such that the skirt, the shroud, and the support are removable from the container as a single component.

12. The vacuum cleaner of claim 11, wherein the dirt cup assembly includes a top lid attached to the upper portion of the shroud, and wherein the second stage cyclonic separator is attached to the top lid such that the second stage cyclonic separator is removable from the shroud with the top lid.

13. A vacuum cleaner comprising:

a suction source operable to generate an airflow;

a suction nozzle in fluid communication with the suction source and configured to remove debris from a surface using the airflow; and

a dirt cup assembly including,

a first stage cyclonic separator operable to at least partially separate the debris from the airflow,

a second stage cyclonic separator downstream from the first stage cyclonic separator and operable to at least partially separate the debris from the airflow, wherein the second stage cyclonic separator includes a plurality of cyclonic separators arranged in parallel,

a container having an upper end, a lower end, a sidewall that extends between the upper end and the lower end to at least partially define the first stage cyclonic separator,

a shroud having a lower perforated portion located within the container, an upper portion that surrounds and receives the second stage cyclonic separator, the upper portion located outside of the container, and an intermediate portion between the lower portion and the upper portion, wherein the upper portion defines a flange, wherein the shroud is a single, unitary component, and

a top lid attached to the flange such that the top lid is spaced from the upper end of the container.

14. The vacuum cleaner of claim 13, wherein the second stage cyclonic separator is attached to the top lid such that the second stage cyclonic separator is removable from the shroud with the top lid.

15. The vacuum cleaner of claim 13, further comprising a skirt located within the container adjacent the lower portion of the shroud.

16. The vacuum cleaner of claim 15, wherein the skirt includes an opening, and wherein the dirt cup assembly further includes a support that extends through the opening of the skirt and defines a central passageway that receives the debris separated from the airflow by the second cyclonic stage.

17. The vacuum cleaner of claim 16, wherein the skirt couples the shroud and the support such that the skirt, the shroud, and the support are removable from the container as a single component.

18. The vacuum cleaner of claim 17, wherein the skirt is rotatable with respect to the support to couple the shroud, the support, and the skirt.

19. The vacuum cleaner of claim 13, wherein the upper portion of the shroud forms an outside wall of the dirt cup above the upper end of the container.

20. The vacuum cleaner of claim 19, wherein the intermediate portion of the shroud is attached to the sidewall of the container adjacent the upper end of the container.