EP3669741B1 - Reinigungsvorrichtung für einen geschirrspüler - Google Patents

Reinigungsvorrichtung für einen geschirrspüler Download PDF

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Publication number
EP3669741B1
EP3669741B1 EP18213675.4A EP18213675A EP3669741B1 EP 3669741 B1 EP3669741 B1 EP 3669741B1 EP 18213675 A EP18213675 A EP 18213675A EP 3669741 B1 EP3669741 B1 EP 3669741B1
Authority
EP
European Patent Office
Prior art keywords
cleaning apparatus
body portion
dishwasher
liquid
examples
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.)
Active
Application number
EP18213675.4A
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English (en)
French (fr)
Other versions
EP3669741A1 (de
Inventor
Erkan TUNAY
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret AS
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.)
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Publication date
Application filed by Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Priority to EP18213675.4A priority Critical patent/EP3669741B1/de
Publication of EP3669741A1 publication Critical patent/EP3669741A1/de
Application granted granted Critical
Publication of EP3669741B1 publication Critical patent/EP3669741B1/de
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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
    • A47L15/50—Racks ; Baskets
    • A47L15/508—Hydraulic connections for racks
    • 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
    • A47L15/37—Washing or rinsing machines for crockery or tableware with crockery cleaned by brushes
    • A47L15/39—Washing or rinsing machines for crockery or tableware with crockery cleaned by brushes with brushes on movable supports
    • 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
    • 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
    • A47L15/4278—Nozzles
    • 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
    • A47L15/4278—Nozzles
    • A47L15/428—Rotary nozzles
    • 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
    • A47L15/4289—Spray-pressure measuring or regulating arrangements

Definitions

  • the present disclosure relates to a cleaning apparatus for a dishwasher, and a dishwasher comprising one or more such cleaning apparatus..
  • Dishwashers are used for washing items such as crockery and cutlery.
  • a known dishwashing machine comprises a washing compartment for holding one or more items to be washed, and a washing mechanism for washing those items.
  • Such a washing mechanism typically comprises one or more spray arms.
  • a user can select from a plurality of pre-defined washing cycles via a user interface on a front face of the dishwashing machine.
  • GB 1060642A discloses a dishwashing machine having a water tube with an abrasive head. Reaction of water as it issues through a free end of the tube causes the abrasive head of the tube to adopt a random flailing motion, thus mechanically scouring both the inside and outside of pots in the dishwashing machine.
  • a cleaning apparatus for a dishwasher comprising at least one element projecting from a body portion of the cleaning apparatus, wherein the at least one element is constructed and is arrangeable in the dishwasher so as to spray liquid on to an item to be washed in the dishwasher to impact the item to be washed during a washing cycle of the dishwasher, and wherein the at least one element comprises a plurality of projections; at least some of the projections having a liquid outlet.
  • the at least one element comprises a flexible material.
  • the at least one element comprises an elastic polymer material.
  • the plurality of projections form a serrated outer profile of the at least one element.
  • the at least one element has a first end attached to the body portion and a second end spaced from the body portion, the second end having a smaller diameter than the first end.
  • the first end comprises a liquid inlet to the at least one element and the second end comprises a liquid outlet from the at least one element.
  • the cleaning apparatus is constructed and arranged to move during the washing cycle, the movement comprising one or more of: vertical movement of the body portion; rotational movement of the body portion.
  • the cleaning apparatus comprises a heating element for heating liquid in the apparatus.
  • the cleaning apparatus comprises an inflatable and deflatable balloon within the body portion for selectively increasing and decreasing liquid pressure in the cleaning apparatus.
  • the body portion is spherical.
  • the at least one element comprises a plurality of elements distributed about the body portion.
  • a dishwasher comprising one or more cleaning apparatus according to the first aspect.
  • the one or more cleaning apparatus is comprised in a rack of the dishwasher, the rack comprising one or more hollow pipes for transferring liquid to the cleaning apparatus.
  • Dishwashers are used to automate the washing of items of crockery such as plates, bowls, cups, mugs etc. Dishwashers may also be used to wash cutlery such as knives, forks, spoons, or indeed any other cooking or eating utensil. Other items that may be washed include glassware, food containers etc.
  • FIG. 1 schematically shows an example of a dishwasher100.
  • the dishwasher100 comprises a main body 102, within which there is a washing compartment or chamber 104.
  • the washing compartment 104 comprises a lower portion 106 and an upper portion 108.
  • the lower portion 106 comprises a tray or rack or shelf 110 for holding items to be washed
  • the upper portion 108 comprises a tray or rack or shelf 112 for holding items to be washed.
  • the racks 110 and 112 can be moved in and out of the washing compartment 104 on roller assemblies.
  • a washing mechanism 123 comprises spray arm 124 in lower portion 106, and spray arm 126 in upper portion 108.
  • spray arm 126 is omitted.
  • Each spray arm comprises a series of holes or nozzles which can spray water upwardly towards the items to be washed 114, while the spray arms 124 and 126 rotate. These are commonly referred to as spray holes. They may also be referred to as water outlets. Rotation of the spray arms 124 and 126, whilst ejecting water therefrom, helps to clean the items in a washing load.
  • the spray arm 124 is connected to shaft 125.
  • the shaft 125 enables rotation of spray arm 124 about a central axis of the shaft 125.
  • the shaft 125 and spray arm 124 may be considered to be comprised in a spray arm assembly 121.
  • the spray arm 126 is connected to shaft 127.
  • the shaft 127 enables rotation of spray arm 126 about a central axis of the shaft 127.
  • the dishwashing machine 100 further comprises water inlet schematically shown at 128 and water outlet schematically shown at 130, for enabling water to be fed to and taken away from the dishwashing machine respectively.
  • a heater element (not shown) is provided for heating water as necessary.
  • hot and cold water is drawn from a building's supply as required.
  • a power connection is schematically shown at 132, which enables the dishwashing machine to be connected to mains electrical power for powering the dishwashing machine.
  • a water pump is schematically shown at 150.
  • the water pump 150 is constructed and arranged to distribute water around the dishwashing machine 100.
  • the water pump 150 can pump water to spray arms 124 and 126. Water that has been sprayed falls back down to a base or sump 152 of the dishwashing machine 100, from where that water can be recycled (after filtering, in some examples) by the pump 150.
  • rotation of the spray arms 124 and 126 is effected by the force of water being ejected from spray holes of the spray arms.
  • the spray holes may be arranged and/or oriented so as to facilitate such rotation.
  • one or more motors shown schematically at 148, may be provided for powering rotation of the spray arms 124 and 126.
  • a controller is schematically shown at 134 for controlling operations of the dishwasher.
  • the controller may comprise at least one memory and at least one processor.
  • the controller 134 can, for example, cause the dishwashing machine to operate according to one or more pre-determined washing cycles selected via a user interface 136.
  • the available washing cycles may differ from each other by temperature and/or duration, for example.
  • Via the user interface 136 a user may also be able to select whether the washing cycle is for a full or half load.
  • a display 138 is also provided which can display information to the user. This may include information such as confirming a user's washing cycle selection, as well as information such as time remaining of a washing cycle that is in progress.
  • the display 138 may also display one or more alarm states to a user, for example by use of a flashing light.
  • a speaker may also be provided in some examples, so that an audible alarm can be provided to a user (for example a buzzer).
  • An alarm state may, for example, indicate an end of a wash.
  • a door of the dishwashing machine 100 is schematically shown at 140.
  • the door 140 is connected to main body 120 via hinges 142 and 144.
  • the door is in an open position enabling access to washing compartment 104.
  • the door 140 may be moved to a closed position so that the washing compartment 104 is then substantially enclosed.
  • the door 140 may also include a receptacle for holding dishwashing detergent (e.g. a detergent cube) which can be released in to the dishwashing machine during a wash.
  • the receptacle for holding washing detergent may of course also be positioned elsewhere within the dishwashing machine.
  • the dishwashing machine may also include one or more further receptacles for containing dishwashing machine salt and/or rinse aid, for example.
  • a washing cycle generally comprises three main stages: (i) wetting; (ii) injection of detergent, (iii) rinsing. In some examples one or more of these steps may be omitted.
  • a rinse wash may include just a rinsing cycle. Whichever steps are included or not included, the washing of the washing load may be generally termed a washing cycle.
  • a problem which has been recognised by the present inventors is that the spray arm assemblies 121 and 127 may not adequately wash items in the dishwasher 100. This may be particularly so where the items have dry or sticky soiling or staining.
  • one or more cleaning apparatus 160 is provided.
  • the cleaning apparatus 160 may be provided in addition to the one or more spray arm assemblies 121 and 127. In other examples the cleaning apparatus 160 may be provided instead of the one or more spray arm assemblies 121 and 127.
  • the cleaning apparatus 160 is constructed and arranged to spray liquid (e.g. water and/or detergent) on to items to be washed, and also to physically impact or touch items during a washing cycle so as to help remove dirt.
  • the cleaning apparatus is comprised in a rack (e.g. rack 112) of the dishwasher 100, so as to be proximate to the items to be washed.
  • liquid is supplied to the cleaning apparatus 160 by the water network of the dishwasher 100 e.g.
  • the rack holding the cleaning apparatus 160 is formed of one or more hollow pipes for delivering liquid to the cleaning apparatus 160.
  • the rack provides a dual function of holding items to be washed as well as being part of the water network for delivering liquid to cleaning apparatus 160.
  • the cleaning apparatus 260 comprises a body portion 262 and at least one element 264 projecting from the body portion 262. In the example of Figure 2 there are a plurality of such elements 264 distributed about the body portion 262.
  • the body portion 262 is spherical or substantially spherical. In other examples the body portion 262 may be a different shape; for example the body portion 262 may be oval in cross-section.
  • the body portion 262 may comprise a plastic material.
  • the at least one element 264 is constructed and arranged to eject or spray liquid on an item to be washed (e.g. plate 216). Sprayed liquid is schematically shown at 266 and 268 for example.
  • the cleaning apparatus 260 may be constructed and arranged to move during a washing cycle.
  • the body portion 262 may be caused to rotate and/or move up and down during a washing cycle.
  • mounting 270 is provided on which the body portion 262 is mounted.
  • the mounting 270 may be caused to move up and down (e.g. in the directions of arrows A and B).
  • the body portion 262 is also constructed and arranged to rotate around mounting 270, for example as shown by arrow R.
  • the body portion 262 may also be constructed and arranged to move laterally across the width of the washing compartment (i.e. parallel to longitudinal axis of member 270).
  • the body portion 262 may also be constructed and arranged to move in a direction in and out of the depth of the washing compartment (i.e. parallel to the longitudinal axis of rack portion 275).
  • a motor schematically shown at 272 may enable such movement of the cleaning apparatus 260.
  • the at least one element 264 is furthermore constructed and arranged to impact (i.e. physically touch) an item to be washed (e.g. plate 216) during a washing cycle.
  • an item to be washed e.g. plate 2166
  • the element 264 will have a brushing effect on the item 216, which in particular helps to remove dry or sticky stains.
  • a portion of the dishwasher rack is schematically shown at 274.
  • the dishwasher rack 274 may itself form part of the water network for delivering liquid to the cleaning apparatus 260.
  • the rack 274 may comprise one or more hollow tubes for delivering liquid to the cleaning apparatus 260.
  • Figure 3 shows some aspects of the cleaning apparatus 260 in more detail. More particularly Figure 3 shows some internal aspects of body portion 262. For clarity the plurality of elements 264 is not shown in Figure 3 .
  • a heating element is schematically shown at 276, within body portion 262.
  • the heating element may comprise, for example, a heating resistor.
  • the heating element is constructed and arranged to heat liquid that is to be sprayed by the cleaning apparatus 260.
  • a pipe for delivering liquid to the cleaning apparatus 260 is shown at 278.
  • the pipe 278 may also comprise the mounting 270 (see Figure 2 ).
  • An electrical conductor for supplying current to heating element 276 is schematically shown at 280.
  • the conductor 280 is arranged to pass through the mounting 278.
  • the conductor 280 comprises an electrically insulating coating.
  • a liquid holding portion of the body portion 262 is schematically shown at 263.
  • liquid may be fed through pipe 278 to liquid holding portion 263 of body portion 262, before passing in to the one or more elements 264.
  • a flexible balloon is schematically shown at 282, within body portion 262.
  • the flexible balloon 282 comprises a gas 284, such as carbon dioxide (CO 2 ).
  • Gas 284 is selectively pumped in to or expelled from balloon 282 in order to selectively inflate and deflate balloon 282. This causes selective increasing and decreasing of liquid pressure in the body portion 262, and consequently can control a pressure of liquid ejected out of the one or more elements 264.
  • a pipe network (not shown) is provided for providing to/removing gas from the balloon 282.
  • a gas supply tank (not shown) may also be provided, or gas may be drawn from the atmosphere.
  • Figure 4 shows an element 264 in more detail according to an example.
  • the element 264 comprises a flexible material.
  • the element 264 comprises an elastic polymer material.
  • the element 264 comprises a plurality of projections.
  • the projections 286 may be in the form of serrations or spikes.
  • the projections 286 have a brushing effect as they impact or touch an item to be washed.
  • at least some of the projections 286 comprise liquid outlets at their end, shown schematically at 288. These liquid outlets 288 may be considered "micro-holes".
  • the projections 286 may also comprise an elastic polymer material.
  • the element 264 comprises a first end 290 and a second end 292.
  • the first end 290 is arranged to connect to body portion 262.
  • the first end 290 may be considered a liquid inlet in to the element 264, from liquid holding portion 263 of body portion 262.
  • Liquid is schematically shown at 294.
  • the second end 292 may comprise a hole for spraying liquid that has been forced through a hollow interior of element 264. Ejected liquid is schematically shown at 296.
  • the second end 292 has a smaller diameter than the first end 290.
  • the element 264 may be considered to be in the form of a nozzle.
  • At least two of a plurality of elements 264 may differ in some way.
  • one element 264 may be longer than another element 264.
  • One element 264 may have a wider internal diameter than another element 264.
  • different elements 264 may be arranged to eject liquid at different pressures.
  • Figure 5 is a flow chart of a process according to an example.
  • a user sets a washing program, for example via user interface 136.
  • the heating element 276 in the cleaning apparatus 260 is activated.
  • the cleaning apparatus 260 ejects liquid on to one or more items to be washed, as shown at S4.
  • the cleaning apparatus 260 is caused to be moved, as shown at S5.
  • the cleaning apparatus as described may more quickly and efficiently remove stains from items to be washed such as crockery and cutlery. This may enable shorter washing cycles and less water, electricity and detergent to be consumed.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (13)

  1. Reinigungsvorrichtung (260) für eine Geschirrspülmaschine, wobei die Reinigungsvorrichtung (260) wenigstens ein Element (264) aufweist, das von einem Körperabschnitt (262) der Reinigungsvorrichtung vorsteht, wobei das wenigstens eine Element (264) konstruiert ist und in der Geschirrspülmaschine angeordnet werden kann, um Flüssigkeit (268) auf einen in der Geschirrspülmaschine zu spülenden Gegenstand zu sprühen und auf das zu spülende Gegenstand während eines Spülablaufs der Geschirrspülmaschine einzuwirken, und wobei das wenigstens eine Element (264) mehrere Vorsprünge (286) aufweist; dadurch gekennzeichnet, dass zumindest einige der Vorsprünge (286) einen Flüssigkeitsauslass (288) haben.
  2. Reinigungsvorrichtung (260) nach Anspruch 1, wobei das wenigstens eine Element (264) ein flexibles Material aufweist.
  3. Reinigungsvorrichtung (260) nach Anspruch 1 oder Anspruch 2, wobei das wenigstens eine Element (264) ein elastisches Polymermaterial aufweist.
  4. Reinigungsvorrichtung (260) nach einem der Ansprüche 1 bis 3, wobei die mehreren Vorsprünge (286) ein gezacktes Außenprofil des wenigstens einen Elements (264) bilden.
  5. Reinigungsvorrichtung (260) nach einem der Ansprüche 1 bis 4, wobei das wenigstens eine Element (264) ein erstes Ende (290), das am Körperabschnitt (262) angebracht ist, und ein zweites Ende (292), das vom Körperabschnitt (262) beabstandet ist, hat, wobei das zweite Ende (292) einen kleineren Durchmesser als das erste Ende (290) hat.
  6. Reinigungsvorrichtung (260) nach Anspruch 5, wobei das erste Ende (290) einen Flüssigkeitseinlass zu dem wenigstens einen Element aufweist und das zweite Ende (292) einen Flüssigkeitsauslass von dem wenigstens einen Element (264) aufweist.
  7. Reinigungsvorrichtung (260) nach einem der Ansprüche 1 bis 6, wobei die Reinigungsvorrichtung konstruiert und angeordnet ist, um sie sich während des Spülablaufs zu bewegen, wobei die Bewegung ein oder mehr aufweist von:
    vertikaler Bewegung des Körperabschnitts (262); Drehbewegung des Körperabschnitts (262).
  8. Reinigungsvorrichtung (260) nach einem der Ansprüche 1 bis 7, aufweisend ein Heizelement (276) zum Erhitzen von Flüssigkeit in der Vorrichtung (260).
  9. Reinigungsvorrichtung (260) nach einem der Ansprüche 1 bis 8, aufweisend einen aufblasbaren und entleerbaren Ballon (282) innerhalb des Körperabschnitts (262) zum selektiven Erhöhen und Verringern des Flüssigkeitsdrucks in der Reinigungsvorrichtung (260).
  10. Reinigungsvorrichtung (260) nach einem der Ansprüche 1 bis 9, wobei der Körperabschnitt (262) kugelförmig ist.
  11. Reinigungsvorrichtung (260) nach einem der Ansprüche 1 bis 10, wobei das wenigstens eine Element (264) mehrere Elemente aufweist, die um den Körperabschnitt verteilt sind.
  12. Geschirrspülmaschine (100), aufweisend ein oder mehr Reinigungsvorrichtungen (260) nach einem der Ansprüche 1 bis 11.
  13. Geschirrspülmaschine (100) nach Anspruch 12, wobei die ein oder mehr Reinigungsvorrichtungen in einem Gestell (110, 112) der Geschirrspülmaschine enthalten sind, wobei das Gestell (110, 112) ein oder mehr hohle Rohre (278) zum Übertragen von Flüssigkeit zur Reinigungsvorrichtung (260) aufweist.
EP18213675.4A 2018-12-18 2018-12-18 Reinigungsvorrichtung für einen geschirrspüler Active EP3669741B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18213675.4A EP3669741B1 (de) 2018-12-18 2018-12-18 Reinigungsvorrichtung für einen geschirrspüler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18213675.4A EP3669741B1 (de) 2018-12-18 2018-12-18 Reinigungsvorrichtung für einen geschirrspüler

Publications (2)

Publication Number Publication Date
EP3669741A1 EP3669741A1 (de) 2020-06-24
EP3669741B1 true EP3669741B1 (de) 2023-06-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114532933B (zh) * 2022-01-26 2023-12-26 宁波小乎科技有限公司 一种茶杯清洗装置的控制方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL297295A (de) * 1962-09-01 1965-05-25
DE19847151C2 (de) * 1998-10-13 2003-02-06 Aeg Hausgeraete Gmbh Geschirrkorb für eine Geschirrspülmaschine
WO2006025066A1 (en) * 2004-09-02 2006-03-09 Rajesh Vitthalrao Gathe A novel utensil washer
WO2016122029A1 (ko) * 2015-01-30 2016-08-04 (주)자숨 세정수의 안정된 공급이 가능한 식판 세척장치용 브러쉬 모듈, 및 이를 이용한 식판 세척장치
CN108095654A (zh) * 2017-12-27 2018-06-01 重庆市臻憬科技开发有限公司 一种碗碟清洗机
CN108371530A (zh) * 2018-01-22 2018-08-07 郭昌磊 一种家居用品用盘子清洗设备

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