EP0860141A2 - Spendervorrichtung für flüssiges Waschmittel in Geschirrspülmaschinen - Google Patents

Spendervorrichtung für flüssiges Waschmittel in Geschirrspülmaschinen Download PDF

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Publication number
EP0860141A2
EP0860141A2 EP98200241A EP98200241A EP0860141A2 EP 0860141 A2 EP0860141 A2 EP 0860141A2 EP 98200241 A EP98200241 A EP 98200241A EP 98200241 A EP98200241 A EP 98200241A EP 0860141 A2 EP0860141 A2 EP 0860141A2
Authority
EP
European Patent Office
Prior art keywords
pump
detergent
motor
reduction unit
dispenser
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Withdrawn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
EP98200241A
Other languages
English (en)
French (fr)
Other versions
EP0860141A3 (de
Inventor
Rinaldo Coraini
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.)
Premark International Holdings BV
Original Assignee
Premark International Holdings BV
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 Premark International Holdings BV filed Critical Premark International Holdings BV
Publication of EP0860141A2 publication Critical patent/EP0860141A2/de
Publication of EP0860141A3 publication Critical patent/EP0860141A3/de
Withdrawn legal-status Critical Current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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids

Definitions

  • the present invention relates to a dispenser intended to be installed inside a dishwasher, especially an industrial dishwasher using liquid detergents for cleaning dishes.
  • dishwasher dispensers generally contain a peristaltic pump powered by an electric motor.
  • the pump draws the detergent out of a tank and pumps it into the wash compartment.
  • This electric motor inside the dishwasher is, however, disadvantageous in that it increases the risk of electrical faults, such as short circuits caused by the ingress of water.
  • the presence of the electric motor and its control means raises production costs and reduces the reliability of the dishwasher as a whole.
  • the dispenser in accordance with the present invention requires neither its own electric motor nor control means for operating it, and is therefore cheaper, safer and more reliable than dispensers currently on the market.
  • the dishwasher can be seen to comprise, as in the prior art, a wash compartment 1 containing at least one sprayer 2 for spraying the dishes with water.
  • This sprayer is connected via a delivery pipe 3 to a pump 4, preferably a centrifugal pump.
  • the pump 4 has an inlet which is connected in turn to a suction pipe 5 carrying water from the wash compartment 1.
  • the impeller of the pump 4 is keyed to one end of the shaft 6 of an electric motor 7.
  • the dispenser according to the present invention conveniently comprises a speed reduction unit 8 alongside the motor 7 on the opposite side from the pump 4, and the rotary motion of the shaft 6 is stepped down by this unit 8.
  • this speed reduction unit comprises a gear train composed of at least two gears in mesh with each other, but in other embodiments of the dispenser according to the present invention the reduction unit 8 may of course contain other transmission components capable of reducing the number of revolutions of the drive shaft 6.
  • the impeller of a pump 10 Keyed to the driven shaft 9 of the reduction unit 8 is the impeller of a pump 10 which in the present embodiment is of the peristaltic type having a hose.
  • the pump 10 draws the liquid detergent contained in a tank 11 through a feed pipe 12 which preferably has a valve 13 for regulating the flow rate.
  • the diameter of the hose of the pump 10 and of the impeller of the pump 10, and also the transmission ratio of the speed reduction unit 8, are determined as a function of the number of revolutions of the motor 7 when running steadily, so that the amount of detergent injected by the pump 10 into the compartment 1 during the entire period of operation of the motor 7 is approximately the amount of detergent necessary for one washing cycle.
  • the dispenser according to the present invention starts to operate as soon as the motor 7 of the water pump 4 is turned on.
  • the rotation of the shaft 6 of this motor is stepped down and transmitted by the speed reduction unit 8 to the pump 10, which draws the detergent from the tank 11 and pumps it into the wash compartment 1.
  • the direction of flow of the water and detergent through the pipes of the dishwasher while the motor 7 is running is indicated in Fig. 1 by a series of arrows.
  • the pump 10 obviously continues to pump detergent into the wash compartment 1 until the motor 7 is turned off.
  • means may be provided for mechanically uncoupling the pump 10 from the motor 7 so that the pump is running only during certain periods of operation of the motor.
  • Some dishwashers comprise not only a pump for pumping the water used during the washing of the dishes but also another pump for water used to rinse the dishes.
  • the speed reduction unit 8 may therefore be connected mechanically to the motor of the rinsing pump instead of to the washing pump.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP98200241A 1997-01-31 1998-01-28 Spendervorrichtung für flüssiges Waschmittel in Geschirrspülmaschinen Withdrawn EP0860141A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI970186 IT1290226B1 (it) 1997-01-31 1997-01-31 Erogatore di detergente liquido per lavastoviglie
ITMI970186 1997-01-31

Publications (2)

Publication Number Publication Date
EP0860141A2 true EP0860141A2 (de) 1998-08-26
EP0860141A3 EP0860141A3 (de) 1999-05-12

Family

ID=11375812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98200241A Withdrawn EP0860141A3 (de) 1997-01-31 1998-01-28 Spendervorrichtung für flüssiges Waschmittel in Geschirrspülmaschinen

Country Status (3)

Country Link
EP (1) EP0860141A3 (de)
IT (1) IT1290226B1 (de)
TR (1) TR199800151A2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7571734B2 (en) 2005-01-20 2009-08-11 General Electric Company Fluid dispensing system for a washing device
US7802335B2 (en) 2007-10-12 2010-09-28 General Electric Company Bulk dispense user adjustable controls
US8056747B2 (en) 2007-10-12 2011-11-15 General Electric Company Removable tank for laundry bulk dispenser system
US8056374B2 (en) 2007-10-12 2011-11-15 General Electric Company Multiple compartments wash additives auto-dispenser in washer or dryer pedestal
US10815605B2 (en) 2017-10-06 2020-10-27 Whirlpool Corporation Laundry treating appliance having a bulk dispensing assembly
US11253135B2 (en) * 2016-06-01 2022-02-22 Illinois Tool Works Inc. Motor driven in-door dishwasher aid dispenser

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218264A (en) * 1979-03-09 1980-08-19 Federighi George B Dishwasher utilizing pump impeller suction for feeding detergent, sanitizing agent and rinse aid in timed sequences
DE3636384A1 (de) * 1986-10-25 1988-04-28 Licentia Gmbh Geschirrspuel- oder waschmaschine, insbesondere fuer den haushalt mit einer dosiervorrichtung fuer fluessige wasch- und reinigungsmittel
DE3704080A1 (de) * 1987-02-10 1988-08-18 Bosch Siemens Hausgeraete Einspuelvorrichtung fuer fluessige waschmittel bei einer waschmaschine
DE3812109A1 (de) * 1988-04-12 1989-10-26 Schwarzwaelder Uhrwerke Fabrik Reinigungsmittelzufuehrvorrichtung fuer haushaltsgeraete, insbesondere geschirrspueler
DE4125692C1 (en) * 1991-08-02 1993-01-07 Walcher Messtechnik Gmbh, 7815 Kirchzarten, De Alternating drive system e.g. for two pumps - has two coaxial drive shafts driven by electromotor alternatingly with auxiliary coupling allowing simultaneous drive via by=pass gearing

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7571734B2 (en) 2005-01-20 2009-08-11 General Electric Company Fluid dispensing system for a washing device
US7802335B2 (en) 2007-10-12 2010-09-28 General Electric Company Bulk dispense user adjustable controls
US8056747B2 (en) 2007-10-12 2011-11-15 General Electric Company Removable tank for laundry bulk dispenser system
US8056374B2 (en) 2007-10-12 2011-11-15 General Electric Company Multiple compartments wash additives auto-dispenser in washer or dryer pedestal
US11253135B2 (en) * 2016-06-01 2022-02-22 Illinois Tool Works Inc. Motor driven in-door dishwasher aid dispenser
US10815605B2 (en) 2017-10-06 2020-10-27 Whirlpool Corporation Laundry treating appliance having a bulk dispensing assembly
US11162207B2 (en) 2017-10-06 2021-11-02 Whirlpool Corporation Laundry treating appliance having a bulk dispensing assembly
US12146255B2 (en) 2017-10-06 2024-11-19 Whirlpool Corporation Laundry treating appliance having a bulk dispensing assembly

Also Published As

Publication number Publication date
ITMI970186A1 (it) 1998-07-31
TR199800151A3 (tr) 1998-08-21
EP0860141A3 (de) 1999-05-12
TR199800151A2 (xx) 1998-08-21
IT1290226B1 (it) 1998-10-22

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