EP1832218B1 - Vorrichtung zum Spülen von Gegenständen - Google Patents

Vorrichtung zum Spülen von Gegenständen Download PDF

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Publication number
EP1832218B1
EP1832218B1 EP07103652A EP07103652A EP1832218B1 EP 1832218 B1 EP1832218 B1 EP 1832218B1 EP 07103652 A EP07103652 A EP 07103652A EP 07103652 A EP07103652 A EP 07103652A EP 1832218 B1 EP1832218 B1 EP 1832218B1
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EP
European Patent Office
Prior art keywords
compartment
liquid
machine
washing
granular elements
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
EP07103652A
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English (en)
French (fr)
Other versions
EP1832218A1 (de
Inventor
Alberto Spinetti
Gianni Beraldo
Stefano Pasqualotto
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.)
Dihr Ali SpA
Original Assignee
Dihr SpA
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Publication date
Application filed by Dihr SpA filed Critical Dihr SpA
Publication of EP1832218A1 publication Critical patent/EP1832218A1/de
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Publication of EP1832218B1 publication Critical patent/EP1832218B1/de
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219Water recirculation
    • A47L15/4221Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0076Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • A47L15/0081Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals with vertical sliding closing doors, e.g. hood-type dishwashers
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0094Washing or rinsing machines for crockery or tableware cleaning with abrasive solid particles, e.g. by blasting the crockery with liquid containing granules
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219Water recirculation
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225Arrangements or adaption of recirculation or discharge pumps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2601/00Washing methods characterised by the use of a particular treatment
    • A47L2601/18Liquid and granule

Definitions

  • the present invention concerns a machine for washing objects by means of a washing substance consisting of liquid and granular elements, for example grains of plastic material.
  • a washing substance consisting of liquid and granular elements, for example grains of plastic material.
  • the machine according to the present invention is suitable to put the washing substance into circulation, separating the liquid from the granular elements.
  • a machine for washing objects by means of a washing substance consisting of a liquid and of granular elements.
  • the known machine is provided with a washing chamber in which the objects to be washed are disposed, with pumps suitable to make the washing substance circulate, and with a plurality of nozzles connected to the outlet pipes of the pump.
  • the washing chamber comprises a lower container, in which the washing substance is collected after it has been delivered onto the objects to be washed.
  • the lower container is provided with a first compartment able to contain only the liquid, and with a second container able to contain the granular elements and the liquid.
  • the known machine has the disadvantage that it requires at least two pumps: a first pump connected to the first compartment to pick up the liquid only, and a second pump connected to the second compartment to pick up the granular elements mixed with the liquid.
  • a machine for washing objects is known, from the US patent US-A-4 801 333 , in which the cleaning liquid is circulated alternatively with or without granules entrained therein.
  • the cleaning liquid is drawn from a tank by means of a pump to be discharged therefrom under pressure towards the objects to be cleaned.
  • a machine for washing objects is also known, from the international patent application WO-A-80/02105 , in which inside a liquid container is provided a liquid-preamble compartment or cassette providing a magazine for the granules and connected to a bottom outlet in a treatment chamber wherein the blasting shall take place.
  • the compartment or cassette is connected by a valve-controlled opening to the suction side of a pump for sucking-in liquid from the liquid container via the cassette while carrying granules therefrom, and for supplying the liquid containing granules to the treatment chamber from which the granules are again supplied to the cassette through the bottom outlet.
  • One purpose of the present invention is to achieve a machine for washing objects that has a reduced number of components and little complexity.
  • Another purpose of the present invention is to achieve a machine that is very reliable and that requires little or substantially no maintenance, with a consequent saving in the running costs of the machine.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a machine according to the present invention is able to be used for washing objects.
  • the machine according to the present invention comprises at least:
  • the washing chamber comprises a first compartment able to contain the liquid, and a second compartment able to contain the granular elements and the liquid.
  • the pumping means comprises a pump able to selectively pick up both the liquid contained in the first compartment, and also the granular elements and the liquid contained in the second compartment, in order to put them into circulation towards the delivery means.
  • the machine according to the present invention allows to selectively pick up the liquid and the granular elements with a single pump, and therefore has a reduced number of components and little complexity, advantageously using components normally available on the market, easily accessible and simple to repair.
  • the machine according to the present invention comprises valve means associated both with the first and also with the second compartment which, in cooperation with the pump, are able to be activated to determine the -pick-up from each compartment.
  • the pump outlet is connected to the delivery means, while the pump intake is connected to both the first and also to the second compartment.
  • the machine comprises a single command member having a central shaft connected on opposite sides with two valves of the valve means, so that when one valve of the valve means is open, the other valve is closed, and vice versa.
  • the pump intake is connected to the first compartment only, and the machine according to the invention also comprises at least a connection element, connected to the second compartment and disposed between the pump and the delivery means.
  • connection element defines, in cooperation with the liquid taken in by the pump, a depression able to pick up the granular elements and the liquid contained in the second compartment, according to the so-called Venturi effect.
  • This variant allows to transport a volume of liquid with a greater concentration of granular elements compared to known machines, given that the granular elements do not pass through the pump.
  • the two compartments are separated from each other by separation means able to prevent the granular elements from passing from the second compartment to the first compartment, while still allowing the liquid to pass between the two compartments.
  • the two compartments allow to separate the granular elements simply, economically and without requiring any type of maintenance, and substantially without using any part that is movable or to be moved.
  • a machine 10 can be used to wash objects 12, for example dishes, saucepans, pots and not only.
  • the machine 10 ( figs. 1 to 4 ) comprises at least a containing structure 14, inside which a washing chamber 16 is made, in which the objects 12 to be washed are disposed.
  • the sizes of the washing chamber 16 are such as to contain a basket 17, of standard sizes, to contain the objects 12.
  • the machine 10 also comprises a pump 18, for example of the centrifugal type, able to make a washing substance 20 circulate, consisting of at least a liquid 22 and of granular elements 24, preferably but not necessarily having a greater specific weight than that of the liquid 22.
  • a pump 18 for example of the centrifugal type, able to make a washing substance 20 circulate, consisting of at least a liquid 22 and of granular elements 24, preferably but not necessarily having a greater specific weight than that of the liquid 22.
  • the liquid 22 for example comprises water with a detergent material added, specific for the use of the machine 10, and the granular elements 24 comprise grains of plastic material, of a known type.
  • the machine 10 also comprises a plurality of delivery nozzles 26, connected to the pump 18 and able to deliver the washing substance 20 to the objects 12.
  • the delivery nozzles 26 are shaped advantageously so that they are not obstructed by the washing substance 20.
  • the washing chamber 16 comprises a first compartment 30 able to contain the liquid 22, and a second compartment 32 able to contain the granular elements 24 and the liquid 22.
  • the first compartment 30 is separated from the second compartment 32 by means of a holed wall 34, for example made of sheet metal, and advantageously kept in a fixed position.
  • the holed wall 34 is provided with transverse holes, not shown in the drawings, having a size such as to prevent the granular elements 24 from passing from the second compartment 32 to the first compartment 30, but such as to allow the passage of the liquid 22 between the two compartment 30 and 32.
  • Each compartment 30, 32 is provided with a lower aperture connected by means of a sleeve to a corresponding valve 36, 38.
  • the two valves 36 and 38 are advantageously connected to two outputs 39a, respectively 39b, of a single command member 39, of a known type and commanded electrically.
  • the two outputs 39a and 39b belong to the same central shaft of the command member 39, able to rotate around its own axis, so as to open and close the valves 38, 39.
  • the two valves 36 and 38 are connected to the outputs 39a and 39b so as to be angularly offset with respect to each other by 90°, so that when one is open the other is closed, and vice versa.
  • Each valve 36, 38 is connected to a common collector 40 which is in turn connected to the intake of the pump 18.
  • the pump 18 When the pump 18 is activated, it selectively picks up the liquid 22 from the first compartment 30 and the granular elements 24 and the liquid 22 from the second compartment 32, by means of the collector 40, in order to put them into circulation to the delivery nozzles 26.
  • the pump 18 only picks up liquid 22 from the first compartment 30.
  • the pump 18 picks up both the liquid 22 and also the granular elements 24.
  • the quantity of the granular elements 24 is proportional to the aperture of said second valve 38.
  • the washing substance 20, obtained from the mixture of a determinate quantity of liquid 22 and a determinate quantity of granular elements 24, is thrown under pressure by the delivery nozzles 26 against the objects 12 to be washed, thus generating a mechanical action combined with the detergent action of the liquid 22.
  • the washing substance 20 then falls back into the second compartment 32, where the granular elements 24 are stopped by the holed wall 34, whereas the liquid 22 continues towards the first compartment 30.
  • a filter 28 is advantageously disposed, of the removable type, able to block the entry of extraneous objects into the second compartment 32 of a size greater than that of the granular elements 24.
  • the second compartment 32 is defined by a hopper 134, consisting of a holed lateral wall 135 and a bottom wall 136.
  • the machine 110 also comprises a connection element, for example an ejector 42, connected to the lower aperture of the second compartment 32.
  • the lower aperture of the first compartment 30 is connected to the intake of the pump 18.
  • the ejector 42 is connected to the outlet of the pump 18 and defines, due to the Venturi effect, a depression able to pick up the granular elements 24 mixed with the liquid 22, and contained in the second compartment 32, in cooperation with the liquid 22 taken in by the pump 18 from the first compartment 30.
  • the machine 110 also comprises an interceptor valve 44 disposed between the lower aperture of the second compartment 32 and the ejector 42 and able to be activated to determine the picking up of the granular elements 24 and the liquid 22 from the second compartment 32 and to regulate the quantity of granular elements 24 picked up from the second compartment 32 with respect to the overall quantity of washing substance 20 picked up.
  • an interceptor valve 44 disposed between the lower aperture of the second compartment 32 and the ejector 42 and able to be activated to determine the picking up of the granular elements 24 and the liquid 22 from the second compartment 32 and to regulate the quantity of granular elements 24 picked up from the second compartment 32 with respect to the overall quantity of washing substance 20 picked up.
  • a machine 210 according to the present invention comprises a washing chamber 216 having sizes such as to obtain a capacity substantially double that of the washing chamber 16 in fig. 2 or fig. 6 , so that two baskets 17, of standard sizes, can be inserted into the washing chamber 216 adjacent to each other.
  • the machine 210 comprises two independent pumps 18, each connected to a series of delivery nozzles 26, disposed inside the washing chamber 216, associated with the opposite vertical walls.
  • the two pumps 18 are both connected to the collector 40, common with the two valves 36 and 38, which are connected, as in the solution shown in fig. 1 , one to the first compartment 30 and the other to the second compartment 32, and are commanded by the same command member 39.
  • a machine 310 according to the present invention comprises a washing chamber 316 identical to that in the washing chamber 216.
  • the machine 310 also comprises two groups of valves 36 and 38 ( fig. 14 ), each commanded by a command member 39. Moreover, each group of valves 36 and 38 is connected to the corresponding pump 18 by a specific collector 40a, respectively 40b, instead of by a single common collector.
  • a single compartment 32 is provided, disposed centrally, to contain the granular elements 24, which functions as a "second compartment” and which is connected to the two valves 38.
  • two compartments 30 are disposed for the liquid 22, each of which functions as a "first compartment”.
  • Each of the two first compartments 30 is connected to one of the two valves 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Centrifugal Separators (AREA)

Claims (5)

  1. Gerät zum Spülen von Gegenständen (12), enthaltend wenigstens eine Spülkammer (16, 216, 316), in der die zu spülenden Gegenstände (12) angeordnet werden können, eine Pumpeinrichtung (18), die in der Lage ist, eine Spülsubstanz (20) umzuwälzen, die wenigstens aus einer Flüssigkeit (22) und körnigen Elementen (24) besteht, und eine Zuführeinrichtung (26), die mit der Pumpeinrichtung (18) verbunden und in der Lage ist, die Spülsubstanz (20) den Gegenständen (12) zuzuführen, wobei die Spülkammer (16, 216, 316) ein erstes Abteil (30), das die Flüssigkeit (22) aufnehmen kann, und ein zweites Abteil (32) enthält, das die körnigen Elemente (24) zusammen mit der Flüssigkeit (22) aufnehmen kann und die Pumpeinrichtung eine Pumpe (18) enthält, die in der Lage ist, wahlweise und/oder gleichzeitig sowohl die Flüssigkeit (22) als auch die körnigen Elemente (24) aufzunehmen, um sie in Umwälzung zur Zuführeinrichtung (26) zu versetzen, wobei Ventileinrichtungen (36, 38, 44) mit dem ersten und/oder dem zweiten Abteil (30, 32) verbunden und in der Lage sind, wahlweise aktiviert zu werden, um die Aufnahme der körnigen Elemente (24) und der Flüssigkeit (22) zu bestimmen, dadurch gekennzeichnet, dass das Gerät weiterhin ein einziges Steuerelement (39) enthält, das eine zentrale Welle hat, die auf gegenüberliegenden Seiten (39a, 39b) mit zwei Ventilen (36, 38) verbunden ist, die in den Ventileinrichtungen enthalten sind, so dass, wenn ein Ventil (36, 38) der beiden Ventile geöffnet ist, das andere Ventil (36, 38) geschlossen ist und umgekehrt.
  2. Gerät gemäß dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass es zudem eine Trenneinrichtung (34, 134) enthält, die in der Lage ist, das erste Abteil (30) und das zweite Abteil (32) voneinander zu trennen, und verhindern kann, dass die körnigen Elemente (24) vom zweiten Abteil (32) in das erste Abteil gelangen, während die Flüssigkeit (22) frei zwischen den beiden Abteilen (30, 32) passieren kann.
  3. Gerät nach Anspruch 2, dadurch gekennzeichnet, dass die Trenneinrichtung eine mit Löchern versehene Wand (34, 134) enthält, die an einer unveränderlichen Position angeordnet ist.
  4. Gerät nach Anspruch 1, bei dem die Spülkammer (216, 316) Größen hat, die derart beschaffen sind, dass sie in der Lage ist, zwei Körbe (17) einer Standardgröße nebeneinander aufzunehmen, und wobei die Zuführeinrichtung Düsen sind, wobei die Düsen (26) in wenigstens zwei Abfolgen unterteilt sind, die Pumpeinrichtung eine zweite Pumpe (18) enthält und jede der beiden Pumpen (18) am Ausgang mit einer der Abfolgen von Zuführdüsen (26) und am Eingang mit dem ersten und dem zweiten Abteil (30, 32) mit Hilfe der Ventileinrichtungen (36, 38) verbunden ist.
  5. Gerät nach Anspruch 1, dadurch gekennzeichnet, dass es eine zweite Pumpe (18) und zwei der ersten Abteile (30) enthält, wobei beide erste Abteile (30) auf gegenüberliegenden Seiten im Bezug auf das zweite Abteil (32) angeordnet sind, wobei die Ventileinrichtungen weiterhin zwei Ventile (36, 38) enthalten, die mit einem einzigen Steuerelement (39) verbunden sind, und dadurch, dass jede Gruppe der Ventile (36, 38) auf einer Seite mit dem zweiten Abteil (32) und mit einem anderen der beiden ersten Abteile (30) und auf der anderen Seite mit einer der beiden Pumpen (18) mit Hilfe einer entsprechenden Sammeleinrichtung (40a, 40b) verbunden ist.
EP07103652A 2006-03-08 2007-03-07 Vorrichtung zum Spülen von Gegenständen Active EP1832218B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000054A ITUD20060054A1 (it) 2006-03-08 2006-03-08 Macchina per il lavaggio di oggetti

Publications (2)

Publication Number Publication Date
EP1832218A1 EP1832218A1 (de) 2007-09-12
EP1832218B1 true EP1832218B1 (de) 2009-01-21

Family

ID=37036806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07103652A Active EP1832218B1 (de) 2006-03-08 2007-03-07 Vorrichtung zum Spülen von Gegenständen

Country Status (5)

Country Link
EP (1) EP1832218B1 (de)
AT (1) ATE421278T1 (de)
DE (1) DE602007000496D1 (de)
ES (1) ES2321565T3 (de)
IT (1) ITUD20060054A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201002245D0 (en) * 2010-02-10 2010-03-31 Xeros Ltd Improved cleaning apparatus and method
GB201317558D0 (en) * 2013-10-03 2013-11-20 Xeros Ltd Cleaning apparatus
SE540513C2 (en) * 2016-03-30 2018-09-25 Granuldisk Ab Granule valve arrangement for a dishwashing apparatus
WO2019115046A1 (en) 2017-12-11 2019-06-20 Arcelik Anonim Sirketi A dishwasher washing with granules
TR201721371A3 (tr) * 2017-12-23 2018-04-24 Gonca Uslu Oezkuecuek Bulaşık makinaları için bir bulaşık yıkama yöntemi.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3553895A (en) * 1967-11-20 1971-01-12 Bruce W Power Hydraulic surface conditioning machine
JPH0428366B2 (de) 1979-04-02 1992-05-14 Karuru Geran Kurisuteru Moseru
SE8301624D0 (sv) 1983-03-24 1983-03-24 Carl Goran Christer Mosell Sett vid rengoringsmaskin

Also Published As

Publication number Publication date
ATE421278T1 (de) 2009-02-15
DE602007000496D1 (de) 2009-03-12
ITUD20060054A1 (it) 2007-09-09
EP1832218A1 (de) 2007-09-12
ES2321565T3 (es) 2009-06-08

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