EP3996566B1 - Automatische geschirrspülmaschine - Google Patents

Automatische geschirrspülmaschine Download PDF

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Publication number
EP3996566B1
EP3996566B1 EP20754362.0A EP20754362A EP3996566B1 EP 3996566 B1 EP3996566 B1 EP 3996566B1 EP 20754362 A EP20754362 A EP 20754362A EP 3996566 B1 EP3996566 B1 EP 3996566B1
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EP
European Patent Office
Prior art keywords
basket
automatic dishwashing
dishwashing machine
steam
nozzles
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
EP20754362.0A
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English (en)
French (fr)
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EP3996566A1 (de
Inventor
Giambattista BLASETTI
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Individual
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Individual
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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
    • A47L15/0089—Washing or rinsing machines for crockery or tableware of small size, e.g. portable mini dishwashers for small kitchens, office kitchens, boats, recreational vehicles
    • 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
    • A47L15/4234—Steam generating arrangements
    • 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
    • A47L15/26—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means
    • A47L15/30—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means by rotating only
    • 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
    • A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/04—Steam

Definitions

  • the present invention is generally applicable to the technical field of household appliances and particularly relates to a machine for the automatic washing of dishes, in particular cups, saucers and cutlery, designed to be used both in the home and in commercial premises.
  • a fixed or removable basket to facilitate the loading of the dishes to be washed and the subsequent extraction of the clean dishes.
  • nozzles for the delivery of water and/or steam jets at settable pressure and temperature values, which intercept the objects placed on the basket.
  • dishwashers currently available on the market are designed to accommodate any type of kitchen utensil, including large items such as pots, lids and serving dishes.
  • washing chamber must have an adequate height to house objects much larger than cups, mugs and glasses.
  • a machine for automatic dishwashing in particular coffee cups, is known, suitably sized for washing a coffee cup, possibly together with the relative saucer and one or more cutlery small dimensions, such as a coffee spoon, and which allows to solve the problem of stagnation.
  • This machine comprises a basket suitable for housing the cup and which is rotated by an electric motor so as to perform a predetermined number of complete 360° revolutions.
  • the cleaning action is exerted by two series of nozzles arranged below the basket and connected to a boiler in order to produce jets of steam that will be directed vertically to sequentially invest both the internal and external surfaces of the cup.
  • a first limitation of this solution is related to the position of the nozzles and to the fact that the basket undergoes complete rotations around its axis.
  • the basket is sized for washing a single cup, so that a single washing cycle requires relatively long unit times and relatively high water consumption per unit of crockery and which does not make the machine convenient for domestic use or however for washing a few elements at a time.
  • FR926315 which describes a rotating basket inserted in a frusto-conical washing chamber with an inclined lower wall and nozzles arranged above the rotating drum in such a way as to spray according to a vertical or radial direction with respect to the rotation axis of the drum
  • FR480252 which describes a dishwasher with a fixed drum inserted in a cylindrical chamber and nozzles arranged under the fixed drum.
  • the object of the present invention is that of overcoming the above drawbacks, realizing a machine for the automatic washing of dishes which is highly efficient and relatively cheap.
  • a particular object is to provide a machine for the automatic washing of dishes which is particularly optimized for washing small dishes, such as mugs and cups.
  • Still another object of the present invention is to provide a machine for automatic dishwashing that allows to obtain a thorough disinfection, if not a true sterilization, of the most critical parts of one or more cups, in an optimized way both from the point of view of energy consumption and water consumption.
  • Still another object of the present invention is to provide a machine for automatic dishwashing which has a relatively high productivity, allowing to treat more than one crockery, and in particular at least two coffee cups, in the same cycle so as to optimize washing times and consumption.
  • Not least object of the present invention is to provide a machine for automatic dishwashing which has a sufficiently small size to be used also in a domestic environment or in offices, as well as in bars and similar commercial premises.
  • an automatic dishwashing machine which, in accordance with claim 1, comprises a washing chamber housing a basket for supporting one or more dishes to be washed, said basket being rotatable around a predetermined axis of rotation, motor means associated with said basket to drive it into rotation around said axis of rotation, means for supplying one or more steam jets into said washing chamber.
  • the motor means are adapted to transmit to said basket an oscillating motion with a predetermined oscillation amplitude
  • said steam supplying means comprising one or more nozzles mutually aligned along a substantially axial direction and adapted to direct respective jets of steam along an inclined direction with respect to the vertical.
  • the machine will thus allow the dishes to be processed quickly and effectively, obtaining optimal complete cleaning thereof in a relatively short time.
  • Advantageous embodiments of the machine are obtained in accordance with the dependent claims.
  • the machine will be sized to allow two typical coffee cups, of the type commonly used in bars or in the home to serve espresso or mocha type coffee, to be processed at the same time.
  • the machine may be suitably sized to house a different number of cups, even a single cup, or other crockery such as mugs and/or glasses.
  • the machine As can be seen from Fig. 1 , the machine, globally indicated with 1, comprises a containment casing 2 inside which there is a dishwashing chamber 3 and which houses a basket 4 at its inside to support one or more dishes to be washed, in particular two coffee cups C according to the illustrated configuration.
  • the basket 4 is rotatable around a predetermined axis of rotation R and is connected to the transmission shaft of an electric motor 5 arranged at an axial end of the axis of rotation R, externally to the basket 4, to drive it into rotation around its axis of rotation R.
  • Means 6 for supplying one or more jets of steam inside the washing chamber 3 are also housed inside the casing 2.
  • the supplying means 6 comprise a reservoir 7 of clean water, suitably equipped with an anti-limescale filter and pump, not shown, and connected to heating means 8 suitable for transforming the water into steam to be supplied through one or more nozzles 9 located inside the washing chamber 3, inside or outside the basket 4.
  • the heating means 8 could consist, for example, of a small resistance boiler designed to obtain superheated steam, for example at a minimum temperature of 130°C if a sterilization effect of the jets is desired.
  • the bottom wall of the washing chamber 3 will be suitably inclined towards a drain hole in communication with the exhaust duct 11.
  • the basket 4 may be inclined with an inclination angle ⁇ of less than 10°.
  • the basket 4 may also have its axis of rotation R inclined with the same angle ⁇ , as in the illustrated configuration.
  • the washing chamber 3 may have a truncated cone shape and the rotation axis R of the basket 4 may be horizontal.
  • the electric motor 5 will be of the step-by-step type associated with the basket 4 by means of a mechanical cam, not visible in the figures, and which will be configured to transmit to the basket 4 an oscillating motion with a predetermined oscillation amplitude ⁇ around its axis of rotation R.
  • the steam supplying means 6 will comprise one or more nozzles 9 mutually aligned along a substantially axial direction and adapted to direct respective jets of steam along a direction inclined with respect to the vertical.
  • the maximum oscillation amplitude ⁇ of the basket 4 will be no higher than 60° with respect to a vertical median plane p passing through the rotation axis R.
  • This value will allow the entire internal and external surface of the cups C to be invested with the jet of steam, focusing particularly on the open edge thereof.
  • oscillation amplitude ⁇ we mean the amplitude of the oscillation of the basket 4 with respect to the median plane p of the washing chamber 3 passing through the rotation axis R, so that a complete oscillation will have an angle equal to twice the amplitude ⁇ with respect to the median plane p.
  • the motor means 5 will be configured to impart an oscillation to the basket 4 about its axis of rotation R which is symmetrical with respect to the vertical median plane p.
  • the means 6 for supplying the steam jets will comprise an axial bar provided with a plurality of emission nozzles defined by appropriately calibrated holes to emit respective jets of steam which will not be directed vertically but along an inclined direction.
  • each nozzle 9 will have a preferably radial outlet direction and the bar will be arranged on the periphery of the basket 4 in an angularly offset position with respect to the vertical median plane p , with an angular distance not greater than the maximum oscillation amplitude ⁇ , so as to ensure that the steam jets mainly hit the open edge of the cups C and the inside of the cups.
  • the nozzles 9 are designed to emit respective radial and inclined jets with an angle ⁇ comprised between 40° and 80°, preferably 60°, with respect to the vertical median plane p.
  • the basket 4 will preferably be sized to house at least two cups C axially side by side.
  • FIGs. 2 to 5 a preferred but not exclusive embodiment of the washing chamber 3 and the relative basket 4 is shown.
  • Fig. 2 shows the basket 4 in the loaded condition with two cups C
  • Fig. 3 shows the unloaded condition.
  • the basket 4 comprises a first end carrying crosspiece 12 connected to the electric motor 5 and from which a plurality of axial support rods 13 extend, four in the illustrated configuration, suitably spaced to allow easy entry of the water jets and prevent the dishes from falling.
  • the washing chamber 3 will comprise a cylindrical jacket 15 coaxial to the basket 4 and provided with a closing lid 16 of the chamber 3 through which the basket 4 can be extracted.
  • the motor means 5 will be operated to bring the cups C into an inverted position, i.e. with the open edge facing downwards.
  • the motor 5 will move alternately to impart the oscillating movement to the basket 4 around its axis of rotation R, placing the open edge of the cups C near the nozzles 9.
  • the motor 5 will interrupt its cycle by keeping the basket 4 in such a position as to always have the cups with the open edge facing downwards, in order to avoid condensation water remaining inside the cups.
  • the unit cycle time will be 12 seconds and the unit water consumption will be 20cc, making the machine particularly efficient both in terms of energy and water consumption and in terms of process run time, so as to be particularly suitable also for professional uses, for example in bars and similar activities.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (10)

  1. Eine Automatische Geschirrspülmaschine, bestehend aus:
    - eine Waschkammer (3), in der sich ein Korb (4) zur Aufnahme eines oder mehrerer zu spülender Geschirrteile befindet, wobei der Korb (4) um eine vorgegebene Drehachse (R) drehbar ist;
    - Motormittel (5), die dem Korb (4) zugeordnet sind, um ihn in Drehung um die Drehachse (R) zu versetzen;
    - Zuführmittel (6) für einen oder mehrere Dampfstrahlen in der Waschkammer (3);
    dadurch gekennzeichnet, dass die Motormittel (5) geeignet sind, eine oszillierende Bewegung mit einer vorbestimmten Oszillationsamplitude (β) auf den Korb (4) zu übertragen, wobei die Dampfstrahl-Zufuhrmittel (6) eine oder mehrere Düsen (9) umfassen, die zueinander entlang einer Achse ausgerichtet sind im Wesentlichen axialer Richtung und dazu geeignet, entsprechende Dampfstrahlen entlang einer Richtung zu richten, die gegenüber der Vertikalen geneigt ist.
  2. Automatische Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die maximale Schwingungsamplitude (β) des Korbes nicht größer als 60° in Bezug auf eine vertikale Mittelebene (p) ist, die durch die Drehachse (R) verläuft.
  3. Automatische Geschirrspülmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dampfstrahl-Zuführeinrichtung (6) eine axiale Stange umfasst, die mit einer Vielzahl von radialen Düsen (9) zum Ausstoß entsprechender Dampfstrahlen versehen ist.
  4. Automatische Geschirrspülmaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Stange am Umfang des Korbes (4) angeordnet ist und im Winkel von der vertikalen Mittelebene (p) um einen Winkelabstand versetzt ist, der nicht größer als die maximale Schwingungsamplitude (β) ist.
  5. Automatische Geschirrspülmaschine nach Anspruch 4, dadurch gekennzeichnet, dass die Düsen (9) dazu ausgelegt sind, jeweils geneigte Strahlen mit einem Winkel (γ) zwischen 40° und 80°, vorzugsweise 60°, in Bezug auf die vertikale Mittelebene (S).
  6. Automatische Geschirrspülmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Düsen (9) jeweils ein Loch umfassen, das sich in radialer Richtung erstreckt.
  7. Automatische Geschirrspülmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Korb (4) so dimensioniert ist, dass er mindestens zwei Kaffeetassen (C) axial nebeneinander aufnimmt.
  8. Automatische Geschirrspülmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Drehachse (R) des Korbs (4) gegenüber der Horizontalen geneigt ist und einen ersten tragenden Querträger (12) aufweist, der mit den Motormitteln (5) verbunden ist von dem sich mehrere axiale Stützstangen (13) erstrecken.
  9. Automatische Geschirrspülmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Motormittel (5) einen elektrischen Schrittmotor umfassen, der mit einer mechanischen Nocke ausgestattet ist.
  10. Automatische Geschirrspülmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Dampfstrahl-Zufuhrmittel (6) einen Frischwasserbehälter (7) umfassen, der mit Heizmitteln (8) verbunden ist, die dazu geeignet sind, es in Dampf umzuwandeln und die eine oder mehrere Düsen (9) zu versorgen, wobei außerdem ein Tank (10) zum Sammeln des Schmutzwassers in Fluidverbindung mit der Waschkammer (3) vorgesehen ist.
EP20754362.0A 2019-07-12 2020-07-10 Automatische geschirrspülmaschine Active EP3996566B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000011658A IT201900011658A1 (it) 2019-07-12 2019-07-12 Macchina per il lavaggio automatico di stoviglie
PCT/IB2020/056503 WO2021009639A1 (en) 2019-07-12 2020-07-10 Automatic dishwashing machine

Publications (2)

Publication Number Publication Date
EP3996566A1 EP3996566A1 (de) 2022-05-18
EP3996566B1 true EP3996566B1 (de) 2024-03-20

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ID=68733454

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Application Number Title Priority Date Filing Date
EP20754362.0A Active EP3996566B1 (de) 2019-07-12 2020-07-10 Automatische geschirrspülmaschine

Country Status (6)

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US (1) US20220313059A1 (de)
EP (1) EP3996566B1 (de)
JP (1) JP2022540112A (de)
CN (1) CN114423324A (de)
IT (1) IT201900011658A1 (de)
WO (1) WO2021009639A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202105060D0 (en) * 2021-04-09 2021-05-26 Iquique Ltd Cup washing apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR480252A (fr) 1914-12-01 1916-07-12 Pietro Boccalatte Machine à laver la vaisselle
FR926315A (fr) 1946-05-06 1947-09-29 Machine à laver la vaisselle
DE885520C (de) * 1951-03-31 1953-08-06 Walter Hermann Kroll Apparat zum Reinigen von Glaesern und Kruegen
US20150289745A1 (en) * 2012-11-28 2015-10-15 Giambattista BLASETTI Automatic machine to wash kitchenware
CN207186592U (zh) * 2017-04-11 2018-04-06 许伟 洗碗机及洗碗机控制系统
DE102019114116A1 (de) * 2019-05-27 2020-12-03 Illinois Tool Works Inc. Verfahren zum Reinigen von Besteck oder Besteckteilen, Besteckaufnahmevorrichtung zur Aufnahme von in einer Spülmaschine zu reinigendem Besteck sowie Spülmaschine
US11026559B2 (en) * 2019-09-30 2021-06-08 Midea Group Co., Ltd. Dishwasher with image-based fluid condition sensing

Also Published As

Publication number Publication date
IT201900011658A1 (it) 2021-01-12
US20220313059A1 (en) 2022-10-06
EP3996566A1 (de) 2022-05-18
JP2022540112A (ja) 2022-09-14
WO2021009639A1 (en) 2021-01-21
CN114423324A (zh) 2022-04-29

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