EP0370552A1 - Lave-vaisselle - Google Patents

Lave-vaisselle Download PDF

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Publication number
EP0370552A1
EP0370552A1 EP89202844A EP89202844A EP0370552A1 EP 0370552 A1 EP0370552 A1 EP 0370552A1 EP 89202844 A EP89202844 A EP 89202844A EP 89202844 A EP89202844 A EP 89202844A EP 0370552 A1 EP0370552 A1 EP 0370552A1
Authority
EP
European Patent Office
Prior art keywords
water
tub
pump
dishwasher
cut
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Withdrawn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
EP89202844A
Other languages
German (de)
English (en)
Inventor
Erminio Dall'oglio
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0370552A1 publication Critical patent/EP0370552A1/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Withdrawn legal-status Critical Current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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/20—Time, e.g. elapsed operating time
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/01—Water supply, e.g. opening or closure of the water inlet valve
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/07—Consumable products, e.g. detergent, rinse aids or salt

Definitions

  • This invention refers to an improved dishwasher.
  • dishwashers which economize on water by utilizing recycled water for the wash with detergent.
  • clean water is then introduced into the tub to carry out the rinsing.
  • This rinsing water is finally expelled and the next washing cycle for a new load of dishes is started by introducing more clean water into the tub of the dishwasher.
  • This way of proceeding ensures a certain economy in the use of water, especially when compared to the water consumption in machines operating with continuous discharge cycles. The consumption is, however, still considerablly high, especially for machines designed for intensive use such as those used in bars and restaurants.
  • the rinsing cycle is usually carried out by introducing water from the mains without using a pump, but simply exploiting the natural pressure of the incoming water; this entails possible irregularities in the rinsing cycle due to the inconstancy of the pressure in the supply network.
  • the scope of this invention is to obviate the above mentioned problems by providing a dishwasher which is capable of further reducing the consumption of water and which has regular cycles regardless of the pressure in the water supply network.
  • a dishwasher of the type comprising a tub, containing the dishes to be washed supported on racks, which is provided on the inside with a plurality of water spray nozzles and connected on the bottom to an outlet which can be opened by means of an electrically-controlled switch, and is also provided with a dispenser for dispensing detergent in pre-established quantities in communication with the inside of the tub, characterized by the fact that said nozzles are connected to the delivery side of a pump whose suction inlet is connected to electrically-controlled changeover and cut-off devices connecting said inlet alternately to a water pipe drawing water from the bottom of said tub and to a source of water.
  • a dishwasher 10 comprises a tub 11 internally provided with one or more rotating spray arms 12.
  • Said spray arms 12 are connected to the delivery side of a pump 13, the suction inlet of which is connected to the outlet 23 of a changeover and cut-off unit 14 having a first solenoid valve controlled inlet 15 in communication with the bottom of the tub 11 and a second solenoid valve controlled inlet 16 in communication with the outlet of a storage tank in the form of an electric water heater 17 the inlet of which is connected by means of a pipe 28 to a water supply network (not shown).
  • a solenoid valve controlled discharge outlet 18 leading off into a waste pipe 19 connected to a drainage system of the known type and therefore not shown.
  • An electrically controlled dispenser 20 (for example, controlled by a solenoid valve or a small pump) containing detergent is disposed so that each time it is actuated it introduces a pre-established quantity of detergent into the tub 11.
  • the solenoid valve controlled discharge outlet 18 and the first solenoid valve controlled inlet 15 of the unit 14 are protected against the entry of foreign substances by filtering means 29, 30 respectively (for example, screens made of metal or other material).
  • a timer 21 (for example, electromechanically-ope­rated) ensures that the washing cycles in the dishwasher are carried out correctly.
  • the dishwasher obviously comprises other parts (such as, for example, removable racks for the dishes, thermostats, level gauges, drying means, etc.) which, since they are of known technique and consequently easily imaginable by anyone expert in the field, are neither shown nor further described herein.
  • changeover and cut-off unit 14 may be made by means of a suitable combination of solenoid valves obtained by means of the known technique (as is easily imaginable by anyone expert in the field on the basis of the following descriptions) of the type which, when actuated, opens whenever the pressure in the system substantially drops to zero, it was found to be advantageous to use an integrated device as more clearly illustrated in the schematic phantom view shown in figure 2.
  • the unit 14 comprises an airtight housing 22 containing the connectors for the inlets 15, 16 and the outlet 23 mentioned previously. Disposed inside the housing 22, in correspondence with the two inlets 15 and 16, are normally closed diaphragm valves 24 and 25 respectively, which are made to open by means of solenoids 26 and 27 respectively.
  • a valve unit as described above thus enables the aperture of the inlets when the pressure substantially drops to zero and is extremely limited in dimensions.
  • the dishwasher described above operates in the following way.
  • the latter starts the washing cycle by opening the inlet 16 of the device 14 and actuating the pump 13 so as to convey hot water from the water heater 17 to the rotary spray arms 12 which, due to the force of the water, start to rotate and spray water inside the tub.
  • control device 21 closes the inlet 16 and opens the inlet 15 so that the washing cycle continues with closed-cycle circulation of the water taken from the bottom of the tub and re-expelled by the rotary spray nozzles 12.
  • the dispenser 20 is simultaneously made to release a quantity of detergent into the tub.
  • the washing continues for a pre-established period of time, until the beginning of the discharge phase.
  • the pump 13 stops operating and the valve 18 opens to discharge the washing water, thereby putting the bottom of the tub in communication with the drainage system until the washing water has been completely drained out.
  • valve 18 When the valve 18 re-closes, the control device 21 re-opens the inlet 16 and restarts up the pump 13 so as to send clean water into the tub through the spray nozzles 12. This clean water carries out the phase of rinsing the detergent from the dishes and then remains on the bottom of the tub.
  • the quantity of clean water used by the dishwasher during the rinsing phase is the same as that which it uses for the washing phase with detergent.
  • the timer 21 does not take water from the water heater but actuates the detergent dispenser and starts up the cycle for recirculating the water directly through the pump 13 and the inlet 15 of the device 14.
  • the discharge and rinsing phases are carried out in the same way as described above, and so on, always using the rinsing water for the subsequent washing phase, with an obvious economy in the consumption of water, which is thereby reduced to half.
  • washing phase with detergent and the rinsing phase are both carried out by means of a pump and, therefore, with constant pressure, regardless of the pressure of the water supply network and of the delivery of the latter, due to the presence of the water heater which acts as a pressure tank between the network and the tub.
  • the water heater can be advantageously arranged with one non-insulated wall in contact with the bottom of the tub, so as to also keep the water on the bottom of the tub warm by conduction.
  • the detergent can be introduced at any point whatsoever of the flow of water entering the tub, in particular in the device 14.
  • the drainage system downstream to the valve 18 can, for example, comprise a pump in order to drain the water from the tub more easily.
  • aspersion of the water inside the tub can be achieved according to any other known technique whatsoever and not necessarily by means of rotating nozzles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
EP89202844A 1988-11-22 1989-11-09 Lave-vaisselle Withdrawn EP0370552A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2218188U IT215240Z2 (it) 1988-11-22 1988-11-22 Macchina lavastoviglie perfezionata.
IT2218188U 1988-11-22

Publications (1)

Publication Number Publication Date
EP0370552A1 true EP0370552A1 (fr) 1990-05-30

Family

ID=11192697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89202844A Withdrawn EP0370552A1 (fr) 1988-11-22 1989-11-09 Lave-vaisselle

Country Status (3)

Country Link
EP (1) EP0370552A1 (fr)
CA (1) CA2002823A1 (fr)
IT (1) IT215240Z2 (fr)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271503A (en) * 1992-10-16 1994-04-20 Hoonved Spa Dishwasher with heat exchanger
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US10653291B2 (en) 2011-06-20 2020-05-19 Whirlpool Corporation Ultra micron filter for a dishwasher

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7083071B1 (en) 2000-06-08 2006-08-01 Beverage Works, Inc. Drink supply canister for beverage dispensing apparatus
US7754025B1 (en) 2000-06-08 2010-07-13 Beverage Works, Inc. Dishwasher having a door supply housing which holds dish washing supply for multiple wash cycles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083717A (en) * 1960-04-08 1963-04-02 James H Bear Dish washing machine
FR1384930A (fr) * 1963-12-18 1965-01-08 Kitchen Machines Holding Ag Machine à laver la vaisselle
EP0156161A1 (fr) * 1984-02-20 1985-10-02 Daikin Industries, Limited Lave-vaisselle automatique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083717A (en) * 1960-04-08 1963-04-02 James H Bear Dish washing machine
FR1384930A (fr) * 1963-12-18 1965-01-08 Kitchen Machines Holding Ag Machine à laver la vaisselle
EP0156161A1 (fr) * 1984-02-20 1985-10-02 Daikin Industries, Limited Lave-vaisselle automatique

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271503A (en) * 1992-10-16 1994-04-20 Hoonved Spa Dishwasher with heat exchanger
GB2271503B (en) * 1992-10-16 1996-03-20 Hoonved Spa Washing machine
US9375129B2 (en) 2009-12-21 2016-06-28 Whirlpool Corporation Rotating filter for a dishwashing machine
US9211047B2 (en) 2009-12-21 2015-12-15 Whirlpool Corporation Rotating filter for a dishwashing machine
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US10779703B2 (en) 2009-12-21 2020-09-22 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9532697B2 (en) 2010-12-03 2017-01-03 Whirlpool Corporation Dishwasher with unitary wash module
US9572473B2 (en) 2010-12-03 2017-02-21 Whirlpool Corporation Dishwasher with unitary wash module
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US9532696B2 (en) 2010-12-03 2017-01-03 Whirlpool Corporation Dishwasher with unitary wash module
US9364131B2 (en) 2010-12-13 2016-06-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US9700196B2 (en) 2011-05-16 2017-07-11 Whirlpool Corporation Dishwasher with filter assembly
US9538898B2 (en) 2011-05-16 2017-01-10 Whirlpool Corporation Dishwasher with filter assembly
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US11882977B2 (en) 2011-05-16 2024-01-30 Whirlpool Corporation Dishwasher with filter assembly
US9167950B2 (en) 2011-05-16 2015-10-27 Whirlpool Corporation Dishwasher with filter assembly
US10314457B2 (en) 2011-06-20 2019-06-11 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US10653291B2 (en) 2011-06-20 2020-05-19 Whirlpool Corporation Ultra micron filter for a dishwasher
US10178939B2 (en) 2011-06-20 2019-01-15 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US10070769B2 (en) 2011-06-20 2018-09-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US10058227B2 (en) 2011-06-20 2018-08-28 Whirlpool Corporation Filter assembly for a dishwasher
US10813525B2 (en) 2011-06-20 2020-10-27 Whirlpool Corporation Ultra micron filter for a dishwasher
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US10058228B2 (en) 2012-02-27 2018-08-28 Whirlpool Corporation Soil chopping system for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US11134825B2 (en) 2012-05-30 2021-10-05 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US10076226B2 (en) 2012-05-30 2018-09-18 Whirlpool Corporation Rotating filter for a dishwasher
US10376128B2 (en) 2012-05-30 2019-08-13 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9962060B2 (en) 2012-10-23 2018-05-08 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9826882B2 (en) 2012-10-23 2017-11-28 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9757008B2 (en) 2012-10-23 2017-09-12 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
US9649007B2 (en) 2012-10-23 2017-05-16 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter

Also Published As

Publication number Publication date
IT8822181V0 (it) 1988-11-22
IT215240Z2 (it) 1990-09-11
CA2002823A1 (fr) 1990-05-22

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