EP1190661A2 - Système de vidange pour aspirateur - Google Patents

Système de vidange pour aspirateur Download PDF

Info

Publication number
EP1190661A2
EP1190661A2 EP20010402043 EP01402043A EP1190661A2 EP 1190661 A2 EP1190661 A2 EP 1190661A2 EP 20010402043 EP20010402043 EP 20010402043 EP 01402043 A EP01402043 A EP 01402043A EP 1190661 A2 EP1190661 A2 EP 1190661A2
Authority
EP
European Patent Office
Prior art keywords
tank
valve
outlet
flapper valve
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20010402043
Other languages
German (de)
English (en)
Inventor
Alan D. Kaufman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shop Vac Corp
Original Assignee
Shop Vac Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shop Vac Corp filed Critical Shop Vac Corp
Publication of EP1190661A2 publication Critical patent/EP1190661A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0023—Recovery tanks
    • A47L7/0038—Recovery tanks with means for emptying the tanks
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/365—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the vertical type, e.g. tank or bucket type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0042—Gaskets; Sealing means

Definitions

  • the present invention generally relates to vacuum cleaners and, more particularly, to vacuum cleaners capable of collecting liquid material.
  • Tank-type vacuum cleaners are generally known which are capable of receiving both dry materials, such as debris or dirt, and liquid materials.
  • a motor and an air impeller are typically provided for creating a partial vacuum in the tank.
  • a tank inlet is provided for receiving the vacuumed material and is connected to a hose for directing the vacuum pressure to the desired area.
  • an upper vacuum assembly (which often includes the motor and air impeller) is removed and the contents are dumped out.
  • the vacuum cleaner is used on a liquid material, the tank, when at or near capacity, may be very heavy so that lifting the tank to pour the contents into a sink or drain is difficult. Even tilting the tank to pour the contents into a floor drain may be unwieldy when the liquid level in the tank is high.
  • a vacuum cleaner comprising a tank defining an interior having an inlet for receiving liquid material and an outlet for discharging liquid materials and a vacuum source for selectively generating a partial vacuum in the tank interior.
  • An automatic discharge assembly is provided having a valve housing defining a liquid discharge path with an inlet adapted for fluid communication with the tank outlet and an outlet for directing liquid material discharge.
  • a flapper valve is pivotably connected to the valve housing, the flapper valve being moveable between a closed position, in which the flapper valve obstructs the liquid discharge path, and an open position, in which the flapper valve allows fluid flow through the liquid discharge path. In operation, the flapper valve is in the closed position when vacuum is present in the tank interior and moves to the open position under a mass force of the liquid material inside the tank when a pressure in the tank interior is substantially the same as an atmospheric pressure outside the tank.
  • an automatic discharge assembly for use with vacuum cleaner having a tank defining an interior and including an inlet for receiving liquid material and an outlet for discharging liquid materials, and a vacuum source for selectively generating a partial vacuum in the tank interior.
  • the automatic discharge assembly comprises a valve housing defining a liquid discharge path having an inlet adapted for fluid communication with the tank outlet and an outlet for directing liquid material discharge.
  • a pressure-responsive flapper valve is pivotably connected to the valve housing, the flapper valve being moveable between a closed position, in which the flapper valve obstructs the liquid discharge path, and an open position, in which the flapper valve allows fluid flow through the liquid discharge path.
  • the flapper valve is adapted to be in the closed position when vacuum is present in the tank interior and moves to the open position under a mass force of the liquid material inside the tank when a pressure in the tank interior is substantially the same as an atmospheric pressure outside the tank.
  • FIG. 1 is a side elevation view, in partial cross-section, of a vacuum cleaner having attached thereto an automatic discharge assembly in accordance with the present invention.
  • FIG. 2 is an enlarged side view, in cross-section, of the automatic discharge assembly of FIG. 1 with a hose adapter attached thereto.
  • FIG. 3 is an enlarged side view, in cross-section, of the automatic discharge assembly having a cap attached hose adapter.
  • FIG. 4 is an enlarged side view, in cross-section, ofan automatic discharge assembly with the hose adapter removed.
  • FIG. 5 is an enlarged side view, in cross-section, of the automatic discharge assembly illustrated in FIG. 4 with a cap attached to the assembly.
  • a vacuum cleaner 10 having a tank 12 supporting an upper vacuum assembly, indicated generally at 14.
  • the upper vacuum assembly 14 houses an air impeller assembly that includes a motor 16 and an air impeller 18.
  • the impeller 18 fluidly communicates with an interior of the tank 12 to create a partial vacuum pressure inside the tank.
  • the tank 12 is preferably supported by casters 20 and the upper vacuum assembly 14 includes a handle 22 so that the vacuum cleaner 10 may be easily moved.
  • the tank 12 defines an inlet 24 for receiving vacuumed material.
  • the inlet 24 includes a hosebarb 26 sized to receive and secure an intake hose 28.
  • the motor 16 drives the air impeller 18 to create a partial vacuum pressure inside the tank 12, dry and liquid material drawn into the intake hose 28 is directed through the inlet 24 to collect inside the tank 12.
  • the tank 12 also defines an outlet 30 for emptying the tank 12.
  • an automatic discharge assembly 32 is attached to the tank outlet 30 for selectively discharging the tank 12.
  • the automatic discharge assembly 32 includes a collar 34 having an attachment end 36 sized to engage the tank outlet 30.
  • the tank outlet 30 and collar receiving end 36 are threaded.
  • the collar 34 defines an outlet port 38 and has a valve seat 40 positioned adjacent one end of the outlet port 38.
  • the automatic discharge assembly 32 further includes a valve housing 42 having an inlet 44 attached to the collar 34 and an outlet 46.
  • the sidewall 48 connects the inlet 44 to the outlet 46 to define a discharge flow path 49 which is preferably angled downward to direct fluid as it is discharged from the tank 12.
  • a flapper valve 50 is attached to an interior of the valve housing 42 by a hinge 52.
  • the flapper valve 50 is moveable between open and closed positions. In the closed position, a sealing face 54 of the flapper valve 50 engages the collar valve seat 40 thereby to obstruct the outlet port 38 and prevent liquid from flowing through the tank outlet 30. In the open position, illustrated in phantom in FIGS. 2 and 3, the flapper valve 50 is rotated away from the valve seat 40 to allow liquid to pass through the flow path 49.
  • a hose adapter 56 is attached to the valve housing outlet 46.
  • the hose adapter 56 has a large-diameter receiving end 58 adapted for attachment to the valve housing outlet 46, preferably by threads.
  • the hose adapter 56 also includes a small-diameter discharge end 60 sized to engage a discharge hose 62, as best shown in FIG. 2.
  • the discharge end 60 preferably has external threads which engage internal threads formed in a coupling 64 attached to the hose 62.
  • a cap 66 may be attached to the discharge end 60 to close off the automatic discharge assembly 32.
  • the flapper valve 50 In operation, when a partial vacuum pressure is present inside the tank 12, the flapper valve 50 is drawn to the closed position, in which the sealing face 54 engages the valve seat 40, to prevent fluid flow through the tank outlet 30. The flapper valve 50 will remain in the closed position even when liquid collects in the tank 12, as long as the partial vacuum pressure is present inside the tank 12.
  • the hose adapter 56 need not be attached to the automatic discharge assembly 32.
  • the automatic discharge assembly 32 may be attached to the tank outlet 30 as shown in FIG. 4, so that liquid is discharged directly from the valve housing outlet 46. Consequently, the vacuum cleaner 10 must be positioned so that the outlet 46 is positioned over the drain or other receptacle. As shown in FIG. 5, a large cap 68 may be attached to the valve housing outlet 46 to prevent liquid flow therethrough at all times. It will be understood that the automatic discharge assembly 32 operates the same as described above without the hose adapter 56.

Landscapes

  • Electric Vacuum Cleaner (AREA)
EP20010402043 2000-09-21 2001-07-27 Système de vidange pour aspirateur Withdrawn EP1190661A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66657400A 2000-09-21 2000-09-21
US666574 2000-09-21

Publications (1)

Publication Number Publication Date
EP1190661A2 true EP1190661A2 (fr) 2002-03-27

Family

ID=24674582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010402043 Withdrawn EP1190661A2 (fr) 2000-09-21 2001-07-27 Système de vidange pour aspirateur

Country Status (3)

Country Link
EP (1) EP1190661A2 (fr)
CA (1) CA2353784A1 (fr)
MX (1) MXPA01009456A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2848174A3 (fr) * 2013-09-12 2015-08-05 Shop Vac Corporation Aspirateur avec un système de drainage et procédé pour l'aspirateur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2848174A3 (fr) * 2013-09-12 2015-08-05 Shop Vac Corporation Aspirateur avec un système de drainage et procédé pour l'aspirateur
US9192270B2 (en) 2013-09-12 2015-11-24 Shop Vac Corporation Drain system and method for vacuum cleaner

Also Published As

Publication number Publication date
CA2353784A1 (fr) 2002-03-21
MXPA01009456A (es) 2002-05-24

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Effective date: 20040203