EP0894467A1 - Sauggerät mit Pumpe zum Entfernen von Flüssigkeit - Google Patents

Sauggerät mit Pumpe zum Entfernen von Flüssigkeit Download PDF

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Publication number
EP0894467A1
EP0894467A1 EP97401845A EP97401845A EP0894467A1 EP 0894467 A1 EP0894467 A1 EP 0894467A1 EP 97401845 A EP97401845 A EP 97401845A EP 97401845 A EP97401845 A EP 97401845A EP 0894467 A1 EP0894467 A1 EP 0894467A1
Authority
EP
European Patent Office
Prior art keywords
pump
valve
holding tank
vacuum apparatus
interior
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.)
Granted
Application number
EP97401845A
Other languages
English (en)
French (fr)
Other versions
EP0894467B1 (de
Inventor
Robert C. Berfield
Craig A. Seasholtz
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
Priority to EP19970401845 priority Critical patent/EP0894467B1/de
Priority to DE69726717T priority patent/DE69726717T2/de
Publication of EP0894467A1 publication Critical patent/EP0894467A1/de
Application granted granted Critical
Publication of EP0894467B1 publication Critical patent/EP0894467B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 relates to a vacuum apparatus having a pump for discharging liquid from a holding tank of the vacuum apparatus.
  • a wet/dry vacuum apparatus typically includes, for example, a motor housing, a lid cage, and a tank.
  • the motor housing houses a motor which drives an impeller.
  • the impeller creates a vacuum which draws air, as well as solid and/or liquid material, through a nozzle attachment into the vacuum apparatus.
  • the vacuum apparatus has a filter installed in such a manner that it filters larger objects out of the air drawn into the vacuum apparatus in reaction to the vacuum created by the impeller.
  • the tank holds these larger objects which are filtered out of the air by the filter.
  • the air which passes through the filter is exhausted from the vacuum apparatus through an exhaust opening.
  • the filter may or may not be removed from the vacuum apparatus.
  • the vacuum created by the impeller driven by the motor causes liquid to be drawn into the tank through the inlet nozzle. Because the liquid is heavier than air, the liquid settles into the tank and is not exhausted through the exhaust opening.
  • a valve near the bottom of the tank is opened in order to drain the liquid from the tank, or the motor and lid cage are removed and the tank is tilted to dump out the liquid.
  • a wet/dry vacuum apparatus such as that described above, is particularly useful to vacuum up liquid spills, overflows, and the like where the amount of liquid is relatively small.
  • a pump is more often preferred in order to pump the liquid from the flooded area to a drain or runoff.
  • the present invention is directed to a vacuum apparatus which is useful in removing both small and large amounts of liquid from a wet area.
  • a vacuum apparatus has a docking station for a pump.
  • the pump When the pump is in the docking station, the pump has access to the tank of the vacuum apparatus so that the vacuum apparatus may he used to vacuum up liquid from a wet area and so that the pump may be used to pump this liquid from the tank of the vacuum apparatus to an area, such as a drain or runoff, which is external to the vacuum apparatus. If a large amount of liquid must be removed from a wet area, the pump may be removed from the docking station, and the pump may be used to pump this liquid from the wet area, which is external to the vacuum apparatus, to a discharge area, such as a drain or runoff area.
  • a vacuum apparatus comprises a holding means, a drawing means, and a docking means.
  • the holding means holds material and has an interior and an exterior.
  • the drawing means draws the material from the exterior into the interior of the holding means.
  • the docking means docks a pump in a pump area on the exterior of the holding means so that, when the pump is docked by the docking means, the pump may be used to pump material out of the holding means and so that the pump may be detached from the docking means.
  • a vacuum apparatus comprises a holding tank, a source of vacuum, and a submersible pump.
  • the holding tank has an interior and an exterior.
  • the source of vacuum is arranged to draw material from the exterior into the interior of the holding tank.
  • the submersible pump is mounted to the exterior of the holding tank and is arranged to discharge the material from the interior to the exterior of the holding tank.
  • a vacuum apparatus comprises a holding tank, a source of vacuum, and a pump.
  • the holding tank has an interior and an exterior.
  • the source of vacuum is arranged to draw material from the exterior into the interior of the holding tank.
  • the pump is mounted with a quick connect to the holding tank and is arranged to discharge the material from the interior to the exterior of the holding tank.
  • a vacuum apparatus 10 such as a wet/dry vacuum cleaner, includes a tank 12, a lid cage 14, a motor housing 16, and a cover 18.
  • the tank 12, the lid cage 14, the motor housing 16, and the cover 18 may each be formed wholly or partially of molded plastic or may be formed of any other suitable material.
  • the motor housing 16 houses a motor which drives an impeller.
  • the impeller is arranged to create a vacuum within the vacuum apparatus 10.
  • the vacuum apparatus 10 has a vacuum inlet 20 and a vacuum outlet 22.
  • the vacuum created by the impeller driven by the motor housed in the motor housing 16 draws air and solid and/or liquid material through the vacuum inlet 20 and into the vacuum apparatus 10, and the vacuum outlet 22 is arranged to exhaust air from the vacuum apparatus 10.
  • the tank 12 holds the solid and/or liquid material which is vacuumed into the vacuum apparatus 10.
  • a handle 24 may be molded with the cover 18, or the handle 24 may be a separate structure which is suitably fastened to the cover 18.
  • a pump 26 is docked to the tank 12.
  • a valve operator 28 operates a valve which cooperates with the pump 26 in order to permit communication between the interior of the tank 12 and the pump 26 when the valve operator 28 is in one position and to seal the interior of the tank 12 from the pump 26 when the valve operator 28 is in another position. Accordingly, when the pump 26 is docked to the tank 12, the pump 26 can be used to pump liquid out of the tank 12 through a discharge hose 30.
  • valve operator 28 is generally aligned vertically with the vacuum inlet 20 and the pump 26 is located approximately 180° around the vacuum apparatus 10 from the operator 28.
  • the pump 26 and the valve operator 28 both may be located approximately 90° around the vacuum apparatus 10 from their positions as shown in Figure 1.
  • a drain could be positioned on the vacuum apparatus 10 at the location where the valve operator 28 is currently shown in Figure 1. It further should be apparent that the pump 26 and the valve operator 28 may be positioned in any other locations on the vacuum apparatus 10.
  • the pump 26 may be a submersible pump. When the pump 26 is detached from the vacuum apparatus 10, the pump 26 may be used to pump liquid 32 out of a discharge nozzle 33 and through the discharge hose 30 from a wet area, which is external to the vacuum apparatus 10, to a discharge area, such as a drain or runoff area.
  • the pump 26 also includes a power cord 34 for supplying electrical energy to the motor of the pump 26.
  • the power cord 34 terminates in a three prong plug 36 which may be plugged into a receptacle which is located in the cover 18 or into any other receptacle such as a wall outlet.
  • the cover 18 also provides access to a switch 38 of the vacuum apparatus 10.
  • a power cord 40 is connected at one end to the vacuum apparatus 10 and has a three prong plug 41 at its other end.
  • the three prong plug 41 at the end of the power cord 40 may be plugged into a receptacle such as a wall outlet.
  • the switch 38 of the vacuum apparatus 10 may have three positions. The first position of the switch 38 cuts power from the power cord 40 to both the vacuum motor housed by the motor housing 16 and the pump 26.
  • the second position of the switch 38 supplies power from the power cord 40 to the vacuum motor housed by the motor housing 16 so that solid and/or liquid material nay be vacuumed into the vacuum apparatus 10. Accordingly, solid and/or liquid material is vacuumed in through the vacuum inlet 20 and into the tank 12.
  • the third position of the switch 38 is a momentary switch position which supplies power from the power cord 40 to the pump 26 only so long as the operator holds the switch 38 in its third position. Accordingly, the pump 26 is energized so that liquid may be pumped from the tank 12 of the vacuum apparatus 10 to a discharge area, such as a drain or runoff, which is external to the vacuum apparatus 10. Accordingly, liquid is discharged by the pump 26 from the tank 12 through the discharge hose 30.
  • the switch 38 When the operator no longer holds the switch 38 in its third Position, the switch 38 automatically returns to its first position and the pump 26 is thereby deenergized. Accordingly, the operator cannot inadvertently leave the pump 26 in unattended operation.
  • the vacuum motor which is housed by the motor housing 16, and the pump 26 may be controlled by separate switches.
  • the tank 12 includes a docking station 42.
  • the docking station 42 is formed by an external recess 44 in the tank 12.
  • the external recess 44 forms a circumferential docking wall 46.
  • the docking station 42 is dimensioned with respect to an outer dimension of the pump 26 so that a friction fit is provided to hold the pump 26 in the docking station 42.
  • the pump 26 has a pump handle 52.
  • the pump 26 is rotated clockwise so that the pump handle 52 is inserted into a cooperating groove 54 which is formed in the circumferential docking wall 46 of the docking station 42 in the tank 12.
  • the pump handle 52 which is captured in the cooperating groove 54 of the circumferential docking wall 46 of the docking station 42, together with the frictional engagement between the pump 26 and the docking station 42, cooperate to secure the pump 26 in the docking station 42.
  • a detent (not shown) may be provided in the cooperating groove 54 which cooperates with the pump handle 52 to inhibit unintended counter-clockwise rotation of the pump handle 52 in the cooperating groove 54.
  • the power cord 34 is merely unplugged by use of the three prong plug 36 from the receptacle in the cover 18, and the pump 26 is rotated so that the pump handle 52 is rotated out of the cooperating groove 54 in the circumferential docking wall 46 and so that frictional engagement between the pump 26 and the docking station 42 is broken.
  • a valve 60 extends between the valve operator 28 and the pump 26 in order to control communication between the interior of the tank 12 and the pump 26.
  • the valve operator 28 may be spin welded to a valve stem 62.
  • the valve stem 62 includes a pair of circumferential flanges 64 and 66 which form a seal holder for holding an O-ring seal 68.
  • a fitting 70 is fixedly secured to the tank 12 by any suitable means and has a plurality of threads 72 about an outer surface thereof. The threads 72 cooperate with threads 74 about an inner surface of the valve operator 28.
  • valve stem 62 As the valve operator 28 is rotated in a first direction so that the valve operator 28 is increasingly threaded onto the fitting 70, the engagement between the threads 72 and 74 causes the valve stem 62 to be moved toward engagement with a valve seat 76 which is formed by a socket 78 in the docking station 42. When the valve stem 62 engages the valve seat 76, communication between the interior of the tank 12 and the pump 26 is precluded. On the other hand, as the valve operator 28 is rotated in a second direction so that the valve operator 28 is decreasingly threaded onto the fitting 70, the engagement between the threads 72 and 74 causes the valve stem 62 to be moved away from engagement with the valve seat 76. When the valve stem 62 is disengaged from the valve seat 76, communication between the interior of the tank 12 and the pump 26 is permitted.
  • a tank filter screen 80 surrounds the valve stem 62 in order to filter larger objects from the liquid which flows from the tank 12 to the pump 26 when the valve operator 28 moves the valve stem 62 away from the valve seat 76.
  • the tank filter screen 80 may be a two-part snap-together screen.
  • the docking station 42 which includes the socket 78, is shown in more detail in Figure 9.
  • the socket 78 is suitably affixed to the tank 12.
  • the socket 78 may be spin welded to the tank 12.
  • the socket 78 includes a socket neck 82, which extends between a hole 84 in the tank 12, and a pump receiving basin 86.
  • the pump 26 includes a pump housing 88 which houses a pump motor 90.
  • An impeller 92 is drivingly engaged to the pump motor 90 and is located in a cylindrical recess 94 of the pump housing 88.
  • An inlet plate 96 encloses the impeller 92 within the cylindrical recess 94 of the pump housing 88 and provides an inlet aperture 110.
  • the inlet plate 96 is clamped by an inlet filter screen 98.
  • the inlet filter screen 98 is fixedly attached to the pump housing 88 as by screws 100.
  • the pump motor 90 is placed in the pump housing 88 in the position shown in Figure 9 and is held therein by a pump housing cover 102.
  • the impeller 92 is attached to the drive shaft of the pump motor 90 so that the impeller 92 is drivingly engaged thereto and so that the impeller 92 is located in the cylindrical recess 94 within the pump housing 88.
  • the inlet filter screen 98 is fixedly attached to the pump housing 88 as by screws 100 so that the inlet filter screen 98 clamps the inlet plate 96 to the pump housing 88 and so that the inlet plate 96 encloses the impeller 92 within the cylindrical recess 94.
  • the pump 26 may then be docked in the docking station 42 by inserting the pump 26 into the external recess 44, and by rotating the pump 26 so that the pump 26 frictionally engages the docking station 42 and so that the pump handle 52 is rotated through the cooperating groove 54 in the circumferential docking wall 46 until the pump 26 is fully seated in the pump receiving basin 86.
  • An O-ring 104 surrounds the pump housing 88 and provides a seal between the pump housing 88 and the socket 78. Accordingly, liquid is prevented from leaking around the pump housing 88.
  • the tank filter screen 80 With the pump 26 secured to the docking station 42 of the tank 12, the tank filter screen 80 is snapped together, the valve stem 62 is inserted through the fitting 70 and the tank filter screen 80, and the valve operator 28 is rotated until the valve stem 62 seats against the valve seat 76.
  • a stop clip 106 is clipped over the valve stem 62 in the position shown in Figure 10.
  • the stop clip 106 has an outer diameter which is greater that the inner diameter of the fitting 70 so that the stop clip 106 is not withdrawn from the tank 12 as the valve stem 62 is moved away from the valve seat 76 by the valve operator 28.
  • a stop 108 on the valve stem 62 limits travel of the valve stem 62 in the open valve direction.
  • the vacuum apparatus 10 is then ready for use to vacuum solid and/or liquid material into the tank 12. Accordingly, the switch 38 may be operated to its second position in order to supply power to the vacuum motor housed by the motor housing 16 so that the solid and/or liquid material may be vacuumed in through the vacuum inlet 20 and into the tank 12 of the vacuum apparatus 10.
  • the pump 26 is also now ready for pumping liquid out of the tank 12 through the discharge nozzle 33 and the discharge hose 30 attached thereto. Accordingly, the switch 38 may be operated to its third position in order to supply power to the pump 26 so that liquid may be pumped from the tank 12 of the vacuum apparatus 10 through the discharge hose 30 to a discharge area, such as a drain or runoff, which is external to the vacuum apparatus 10.
  • the tank filter screen 80 and the inlet filter screen 98 filter larger objects from the liquid that enters through the socket neck 82 when the valve stem 62 has been disengaged from the valve seat 76 by the valve operator 28. Accordingly, liquid flows from the interior of the tank 12, through the tank filter screen 80, along the valve stem 62, through the socket neck 82, through the inlet filter screen 98, through the inlet aperture 110 in the inlet plate 96, and into the impeller 92.
  • the impeller 92 drives this liquid through an opening (not shown) in the pump housing 88 and into the space between the pump motor 90 and the pump housing 88.
  • the liquid in this space serves to cool the pump motor 90. From this space, the liquid flows out of the pump housing 88 through an opening (not shown) between the pump housing 88 and the pump housing cover 102, into the pump housing cover 102, through the discharge nozzle 33, and through the discharge hose 30 attached thereto.
  • the pump 26 When the pump 26 is removed from the docking station 42 in the tank 12, the pump 26 can be used as a stand alone pump in order to pump liquid from a wet area, which is external to the vacuum apparatus 10, to a discharge area, such as a drain or runoff area. Accordingly, when the pump 26 is used as a stand alone pump, liquid flows from the wet area, through the inlet filter screen 98, through the inlet aperture 110 in the inlet plate 96, and into the impeller 92. The inlet filter screen 98 filters solid and other material from the liquid that enters the impeller 92. The impeller 92 then drives the liquid through the discharge nozzle 33 and through the discharge hose 30 attached thereto.

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
EP19970401845 1997-07-31 1997-07-31 Sauggerät mit Pumpe zum Entfernen von Flüssigkeit Expired - Lifetime EP0894467B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19970401845 EP0894467B1 (de) 1997-07-31 1997-07-31 Sauggerät mit Pumpe zum Entfernen von Flüssigkeit
DE69726717T DE69726717T2 (de) 1997-07-31 1997-07-31 Sauggerät mit Pumpe zum Entfernen von Flüssigkeit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19970401845 EP0894467B1 (de) 1997-07-31 1997-07-31 Sauggerät mit Pumpe zum Entfernen von Flüssigkeit

Publications (2)

Publication Number Publication Date
EP0894467A1 true EP0894467A1 (de) 1999-02-03
EP0894467B1 EP0894467B1 (de) 2003-12-10

Family

ID=8229831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970401845 Expired - Lifetime EP0894467B1 (de) 1997-07-31 1997-07-31 Sauggerät mit Pumpe zum Entfernen von Flüssigkeit

Country Status (2)

Country Link
EP (1) EP0894467B1 (de)
DE (1) DE69726717T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1466551A2 (de) * 2003-04-10 2004-10-13 Shop Vac Corporation Selbstentleerender Sauger zur Reinigung von Teichen oder Schwimmbecken
US10869586B2 (en) 2016-11-17 2020-12-22 Karcher North America, Inc. Portable vacuum and related accessories

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378611A (en) * 1982-06-22 1983-04-05 James Ninehouser Multifunction cleaning and drying device
DE8622307U1 (de) * 1986-08-20 1986-10-30 Ringler, Bernhard, 7076 Waldstetten Sammelbehälter für ein Sauggerät für gewerbliche oder industrielle Zwecke
DE8805369U1 (de) * 1988-04-22 1988-12-01 Matthäi, Kay-Thomas, 2080 Pinneberg Wassersauger
US5465455A (en) * 1994-05-27 1995-11-14 Allen; Harold Overload controlled wet and dry vacuum apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378611A (en) * 1982-06-22 1983-04-05 James Ninehouser Multifunction cleaning and drying device
DE8622307U1 (de) * 1986-08-20 1986-10-30 Ringler, Bernhard, 7076 Waldstetten Sammelbehälter für ein Sauggerät für gewerbliche oder industrielle Zwecke
DE8805369U1 (de) * 1988-04-22 1988-12-01 Matthäi, Kay-Thomas, 2080 Pinneberg Wassersauger
US5465455A (en) * 1994-05-27 1995-11-14 Allen; Harold Overload controlled wet and dry vacuum apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1466551A2 (de) * 2003-04-10 2004-10-13 Shop Vac Corporation Selbstentleerender Sauger zur Reinigung von Teichen oder Schwimmbecken
EP1466551A3 (de) * 2003-04-10 2005-04-06 Shop Vac Corporation Selbstentleerender Sauger zur Reinigung von Teichen oder Schwimmbecken
US10869586B2 (en) 2016-11-17 2020-12-22 Karcher North America, Inc. Portable vacuum and related accessories

Also Published As

Publication number Publication date
DE69726717D1 (de) 2004-01-22
DE69726717T2 (de) 2004-10-28
EP0894467B1 (de) 2003-12-10

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