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
  • A47L15/4234—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
  • A47L15/0089—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
  • A47L15/26—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.
• Fig. 1 is a schematic side view of the machine of the invention without some elements to allow viewing thereinside;
• Fig. 2 is a perspective view of the basket according to a preferred embodiment and in which two cups have been loaded;
• Fig. 3 is a perspective view of the basket of Fig. 2 in an unloaded condition
• Fig. 4 is a perspective view of the washing chamber containing the basket and in a completely closed condition
• Fig. 5 is a perspective view of the washing chamber containing the basket and in the open door condition
• Fig. 6 is a schematic front view of the basket during use.
• 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 a of less than 10°.
• the basket 4 may also have its axis of rotation R inclined with the same angle a, 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 b 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 b of the basket 4 will be no higher than 60° with respect to a vertical median plane p passing through the rotation axis
• 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 b 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 b 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 b, 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 g 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 rods 13 will then be connected at the other end by a second carrying crosspiece 14 which will facilitate the extraction of the basket 4 from the washing chamber 3.
• 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)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=68733454

Family Applications (1)

Country Status (6)

Cited By (1)

Citations (5)

Family Cites Families (6)

• 2019
  • 2019-07-12 IT IT102019000011658A patent/IT201900011658A1/it unknown
• 2020
  • 2020-07-10 JP JP2022500687A patent/JP2022540112A/ja active Pending
  • 2020-07-10 CN CN202080062941.1A patent/CN114423324A/zh active Pending
  • 2020-07-10 EP EP20754362.0A patent/EP3996566B1/de active Active
  • 2020-07-10 WO PCT/IB2020/056503 patent/WO2021009639A1/en unknown
  • 2020-07-10 US US17/625,109 patent/US20220313059A1/en not_active Abandoned

Patent Citations (5)

Also Published As

Similar Documents

Legal Events