Apparatus for cleaning floors, carpets and the like

• US 6,243,912 B1
• Filed: 08/24/1998
• Issued: 06/12/2001
• Est. Priority Date: 02/22/1996
• Status: Expired due to Term

• Current Assignee: Vax Ltd. (Techtronic Industries Company Limited)
• Original Assignee: Vax Ltd. (Techtronic Industries Company Limited)
• Inventors: Grey, Nicholas Gerald
• Primary Examiner(s): Moore, Chris K.
• Application Number:
  US09/125,662
• Time in Patent Office: 1,023 Days
• Field of Search: 153/20, 153/21, 153/53, 153/28, 153/50, 153/51
• US Class Current: 15/320
• CPC Class Codes: A47L 11/34 Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
• CPC Class Codes: A47L 11/4016 specially adapted for collecting fluids
• CPC Class Codes: A47L 7/0009 with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid
• CPC Class Codes: A47L 7/0038 with means for emptying the tanks
• CPC Class Codes: A47L 7/0042 Gaskets; Sealing means

Abstract

A collection container (40) for matter picked up by a suction cleaner comprises a generally cylindrical body (45) into which an inlet tube (46) extends upwardly from the base (43) thereof. To enable the collection container to be adapted for the collection of either liquids or solids entrained in air flow induced through the inlet tube (46), two interchangeable separator units (60, 70) are provided. Separator unit (60), for use in the wet mode, comprises a tube (61) which forms an extension of the suction tube (46), with a baffle wall (64) over the open mouth thereof, and additionally an oblique annular baffle plate (66) may be provided in the vicinity of the junction between the two tubes (46, 61). The separator unit (70), for use in the dry mode, comprises a mounting ring (72) carrying a tubular filter element (71), the lower end of which is closed by a baffle plate (73) which registers with the open end of the inlet tube (46) in spaced relation thereto.

Claims

1. A vacuum cleaner of the kind comprising a body which carries a main cleaning implement and a source of suction, the body having a recess adapted to receive a collection container releasably through an opening formed at one side of the body, wherein said collection container includes a suction passage which is releasably connectable at the base of the container to a suction duct connected with said cleaning implement, connection means are provided at the upper end of the collection container for releasable connection of said collection container to said source of suction within the body to establish suction at said cleaning implement and air flow from said implement through said duct and said suction passage to said source of suction, and two interchangeable separator units are provided for selective assembly with the collection container, one of said separator units being a wet-mode separator unit which is adapted for connection to said suction passage when the apparatus is to be operated in a wet mode and operates to separate entrained liquid droplets from the air-flow, and the other of said separator units being a dry-mode separator unit which is adapted to be mounted within the collection container at a position spaced from said suction passage when the apparatus is to be used in the dry mode and operates to separate dry material entrained in the air-flow.

2. A vacuum cleaner according to claim 1, wherein the wet-mode separator unit comprises a tube, forming in use an extension of said suction passage in the collection container, and having an outlet opening facing a cap which serves to reverse air flow from said outlet opening and function as an air/liquid separator within the collection container.

3. A vacuum cleaner according to claim 2 wherein said suction passage comprises a tube disposed centrally within said collection container, the wet-mode separator unit tube, when in use being connected to said suction passage tube and also disposed centrally of said collection container.

4. A vacuum cleaner according to claim 3 wherein said wet-mode separator unit tube is of substantially circular shape in transverse cross-section and said baffle is of substantially circular shape and of larger diameter than said tube.

5. A vacuum cleaner according to claim 4 wherein said baffle is formed with a generally cylindrical skirt which extends over, and in spaced relation to, an end portion of said tube, said skirt being spaced inwardly from the side wall of the collection container.

6. A vacuum cleaner according to claim 2 wherein the wet mode separator unit also includes an annular baffle-plate which is arranged to extend across the collection container and is obliquely inclined relative to said separator unit tube.

7. A vacuum cleaner according to claim 6 wherein a tubular wall is removably located within said collection container, and said annular baffle plate is carried by an oblique face of said tubular wall at an end thereof furthest from said outlet opening.

8. A vacuum cleaner according to claim 7 wherein said tubular wall is spaced inwardly from the side wall of said collection container and carries at an end thereof nearest said outlet opening a radially outwardly directed flange which engages in sealing relation with the side wall of said collection container.

9. A vacuum cleaner according to claim 8 wherein an outlet aperture is provided at the junction between said annular baffle plate and said tubular wall at a part of said oblique end face furthest from said outlet opening.

10. A vacuum cleaner according to claim 7 wherein an outlet aperture is provided at the junction between said annular baffle plate and said tubular wall at a part of said oblique end face furthest from said outlet opening.

11. A vacuum cleaner according to claim 1 wherein the dry-mode separator unit comprises a filter element adapted to be disposed within the collection container between the outlet of said suction passage and said connection means at the upper end of the collection container.

12. A vacuum cleaner according to claim 11 wherein said filter element is carried by a mounting ring which is removably mounted within, and sealingly engages against, the side wall of said collection container.

13. A vacuum cleaner according to claim 12 wherein said filter element is of tubular form and has an end remote from said mounting ring, and said end is closed by a baffle plate which, in use, is in register with and spaced from the outlet of said suction passage in said collection container.

14. A vacuum cleaner according to claim 1 wherein said collection container further comprises a reservoir compartment for clean water, and means are provided for delivery of said water to the cleaning head.

15. A vacuum cleaner according to claim 14, wherein said collection container comprises an inner compartment in which said interchangeable separator units are locatable, and said reservoir comprises an outer compartment, of a jug-like unit which is releasably assemblable with the body of the vacuum cleaner.