EP0016895B1 - Reinigungsmaschine - Google Patents

Reinigungsmaschine Download PDF

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Publication number
EP0016895B1
EP0016895B1 EP19790850019 EP79850019A EP0016895B1 EP 0016895 B1 EP0016895 B1 EP 0016895B1 EP 19790850019 EP19790850019 EP 19790850019 EP 79850019 A EP79850019 A EP 79850019A EP 0016895 B1 EP0016895 B1 EP 0016895B1
Authority
EP
European Patent Office
Prior art keywords
liquid
granules
tank
treatment chamber
goods
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.)
Expired
Application number
EP19790850019
Other languages
English (en)
French (fr)
Other versions
EP0016895A1 (de
Inventor
Carl Göran Christer Mosell
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
Priority to EP19790850019 priority Critical patent/EP0016895B1/de
Application filed by Individual filed Critical Individual
Priority to DE7979850019T priority patent/DE2967633D1/de
Priority to BR8008844A priority patent/BR8008844A/pt
Priority to JP55500783A priority patent/JPH0428366B2/ja
Priority to AU59868/80A priority patent/AU544392B2/en
Priority to PCT/SE1980/000094 priority patent/WO1980002105A1/en
Priority to US06/220,071 priority patent/US4374443A/en
Priority to DE8080900645T priority patent/DE3070945D1/de
Priority to AT80900645T priority patent/ATE14666T1/de
Priority to AT83100451T priority patent/ATE23104T1/de
Priority to EP83100451A priority patent/EP0087566B1/de
Priority to FI801075A priority patent/FI73124C/fi
Publication of EP0016895A1 publication Critical patent/EP0016895A1/de
Priority to EP80900645A priority patent/EP0033315B1/de
Priority to DK510680A priority patent/DK150725C/da
Priority to NO803632A priority patent/NO151727C/no
Priority to FI854290A priority patent/FI75485C/fi
Priority to DK22486A priority patent/DK22486D0/da
Application granted granted Critical
Publication of EP0016895B1 publication Critical patent/EP0016895B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B24C7/0015—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
    • 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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • 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
    • A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • 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
    • A47L15/0094—Washing or rinsing machines for crockery or tableware cleaning with abrasive solid particles, e.g. by blasting the crockery with liquid containing granules
    • 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
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • 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
    • 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
    • A47L2601/18—Liquid and granule

Definitions

  • the invention relates to a cleaning machine wherein the goods to be cleaned is treated with a liquid containing granules.
  • Cleaning machines of this type are used for instance for washing heavily soiled goods with adhering food residues which are difficult to resolve and remove only by spraying liquid containing conventional dishwashing detergents.
  • the granules are located on a grid in the treatment chamber below the goods to be cleaned, and by forcing liquid from below through the grid said granules are thrown towards the goods together with the liquid.
  • the liquid and granules are projected against the dishes with the aid of an impeller.
  • liquid together with granules is ejected towards the goods to be washed.
  • the invention provides a cleaning machine of the type referred to herein which is of said latter type and comprises a treatment chamber for receiving the goods having a bottom outlet, a liquid tank, pump means, a first connection between the suction side of the pumps means and the tank, nozzle means connected to the pressure side of the pump means for ejecting liquid towards the goods in the treatment chamber, means whereby the liquid which is to be supplied to the nozzle means can be supplied with granules and whereby the granules ejected from the nozzle means can be separated from the liquid, said means for supplying and separating granules including a liquid permeable strainer.
  • the object of the invention is to provide a constructively simple arrangement for supplying and separating the granules in a reliable manner also as far as small granules are concerned.
  • the granules are described in the divisional application EP-A-0 057 044.
  • the cleaning machine is characterized in that said means is located inside the tank, and that valve means are provided to connect the suction side of the pump means with the treatment chamber either by way of the first connection, so that granules are incorporated into the liquid sucked up by the tank, or by way of a second connection which communicates with the treatment chamber through said strainer, so that the granules are retained by the strainer, liquid only being sucked up by the pump means, said valve means allowing gradual changeover from the first connection to the second and vice versa.
  • the heavy-duty dishwashing machine comprises an outer cassette 10 in which a treatment chamber 12 for the goods to be washed is bounded by means of inside walls 11.
  • a carriage elevator by means of which the carriage can be lifted from the floor level and can be displaced into the treatment chamber.
  • the carriage elevator comprises a cradle 15 which can be displaced hydraulically on a horizontal support rail 16 arranged centrally at the top of the treatment chamber said rail projecting from the treatment chamber through the entrance 14.
  • the cradle 15 supports a vertically mounted guide rail 17 on which a cross-formed lift slide 18 can be displaced hydraulically up and down.
  • the lift slide has a number of hooks 19 to engage from below brackets 20 on the carriage 13 when the cradle 15 is in an outer end position on the support rail 16 and the lift slide is in a lower end position on the guide rail 17 and is then displaced upwardly to lift the carriage sufficiently to the position indicated by dot and dash lines so that the carriage clears the sill 21 in the entrance 14 at succeeding displacement of the carriage elevator and the carriage suspended thereon into the treatment chamber 12 from the outer end position to an inner end position shown by dot and dash lines in Fig. 1, by the cradle 15 being displaced along the support rail 16.
  • An abutment 22 is provided on the guide rail 17 to support the carriage 13 when suspended from the carriage elevator.
  • the arrangement described provides a rational handling of the goods to be washed because this goods can be shelved on the carriage at different collecting places and then easily can be moved into the heavy-duty dishwashing machine without substantial manual work, but it is of course also possible to arrange the heavy-duty dishwashing machine with shelves or guides for the insertion of baskets and racks manually into the treatment chamber.
  • the lower portion of the cabinet 10 is formed as a liquid container 23 below the treatment chamber 12, and this liquid container is enlarged to form a closed suction chamber 24 to which a pump 25 driven by an electric motor is connected with the suction side thereof.
  • the pressure side of the pump is connected to a pressure conduit 26 which in turn is connected by distribution conduits 27 to a number of nozzles 28 rotatably mounted in two vertical rows on two opposite side walls of the treatment chamber in niches 29 formed by these side walls.
  • the connection between the nozzles 28 which are cranked, and the distribution conduits 27 is provided by pivot couplings 30.
  • sprockets 31 For the rotation of the nozzles these,,, are provided with sprockets 31, and an endless chain 32 engages these sprockets said chain also running over two conducting sprockets 33 at the top.
  • One of these conducting sprockets is connected to an electric drive motor 34. It will be seen that the chain 32 is extended alternatingly at one side and the other of the sprockets 31 so that the nozzles 28 in a row are driven alternatingly in one direction and the other.
  • the treatment chamber 12 has a bottom 35 which is perforated to the extent it covers the liquid container 23. It slopes as a funnel towards a central opening 36 covered by a grid 37.
  • the treatment chamber 12 communicates with the liuqid container through the opening 36, not directly but via a cassette 38 shown separately in Fig. 7.
  • the cassette is connected to the opening 36 at a square socket 39 and a conduit portion 40 of the cassette, having the same width as the socket, extends through the side wall 41 of the container 23 into the closed suction chamber 24 wherein it opens.
  • the cassette 38 is arranged to be easily removable from the heavy-duty dishwashing machine by being lifted at the socket 39 and being withdrawn through the opening 36.
  • the perforation of the bottom 35 consists of sufficiently small openings so as not to let through the granules as long as they are not worn due to the use thereof in the machine to such extent that they are no longer effective for the purpose thereof while the grid 37 on the contrary has sufficiently large openings to let through unob- structedly the granules to the cassette 38.
  • the conduit portion 40 of the cassette 38 has an upper bounding wall 42 which extends over the entire width of the cassette.
  • a partition wall 43 extending angularly through the conduit portion 40 there is defined a passage 44 the opening of which at the end connected to the socket 39 has the same width as the conduit portion while the opening at the other end indicated at 45 and opening into the suction chamber 24 has a width which is only half the said width.
  • Gill openings 46 possibly covered by a close- meshed netting to retain the granules in the cassette are provided in the side walls of the socket 39 and the passage 44 such that water can pass between the interior of the cassette 38 and the liquid container 23.
  • the partition wall 43 also defines a passage 47 in the conduit portion 40, which is open at the bottom thereof and also opens into the suction chamber 24 through an opening 48 of the same size as the opening 45.
  • a plate valve 49 is displaceable on a horizontal bar 50 and is of a size to cover completely only one of the openings 45 and 48 at a time, viz. when it is located at one and the other end position thereof, respectively, on the bar 50. In intermediate positions the valve covers each opening more or less.
  • Means can be provided for displacement of the valve 49 manually or by means of a servo on the bar 50 but such means which can be of a known construction are not shown here.
  • the opening 48 of which is assumed to be closed while the opening 45 is open granules will be carried by the liquid when this is sucked-up by the pump 25 from the suction chamber 24 because the suction chamber 24 is connected to the liquid container 23 through the passage 44 of the cassette only. Due to the fact that the liquid then will flow into the passage 44 from the sides through the gill openings 46 the granules will be agitated by turbulence of the liquid and will be carried away by the liquid flow to the pump without being packed in the passage 44.
  • the liquid containing granules is expelled from the nozzles 28 at the pressure side of the pump and is thrown towards the goods to be washed on the carriage 13 in order to provide the cleaning effect thereof. Liquid and granules as well as accompanying contaminants then fall down to the bottom 35 of the treatment chamber 12 where liquid and granules are separated. The granules pass through the grid 37 and the opening 36 into the cassette 38 where they are again carried away by the liquid as this is being sucked-up by the pump 25 from the container 23 via the suction chamber 24.
  • valve 49 is displaced to the end position in which the valve covers the opening 45 the pump will draw liquid only from the container 23 through the passage 47 and the suction chamber 24, and with the valve in positions between said two end positions granules will be mixed with the liquid more or less.
  • the adjustment of the valve is preferably controlled from a timer which controls also other functions of the heavy-duty dishwashing machine.
  • the granules used in the heavy-duty dishwashing machine according to the invention preferably consist of plastics material such as Nylon or Delrin.
  • the granules need not be spherical but can have any form; they can comprise for instance small polyhedrons or cylinders.
  • the substantially spherical form is preferred, however, because balls have no tendency of adhering to the goods to be washed in the manner that can occur as far as granules with plane surfaces are concerned.
  • a guidage for the dimensioning of the granules and the adjustment of other factors affecting the cleaning action of the granules the following specification is given:
  • the amount of granules should comprise between 10 and 50 percent by volume of the circulating liquid and preferably should be 20 to 40 per cent by volume.
  • the temperature of the circulating liquid can be kept low without any detrimental effect on the result; on the contrary, a low temperature is advantageous because it is thereby avoided that proteins in the food residues coagulate and adhere still firmer to the goods.
  • the food residues are broken and comminuted so that they can be easily removed by the circulating liquid.
  • a typical dishwashing program in the heavy-duty dishwashing machine according to the invention can comprise the following different steps:
  • the dishwashing machine can be provided with a hydrocyclone 52 which is connected at the inlet side thereof to a conduit 53 which communicates with the pressure conduit 26, and is connected at the outlet side thereof to a conduit 54 opening into the treatment chamber 12 so that liquid without granules can be pumped through the hydrocyclone between the steps 1 and 2 and between the steps 2 and 3, respectively, or part of the liquid can be pumped continuously through the hydrocyclone during the steps 1 and 3.
  • the cyclone entrained food residues are separated and discharged to a drain 55. After the step 3 the liquid is discharged to the drain and then fresh, clean liquid at the temperature 90°C is supplied for the final flushing. All these operations can be controlled from the timer by means of solenoid valves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (5)

1. Reinigungsmaschine, bei der die zu reinigenden Güter mit einer Körnchen enthaltenden Flüssigkeit behandelt werden, mit einer Behandlungskammer (12) zur Aufnahme der Güter, die einen Bodenauslaß (36, 36') hat, einem Flüssigkeitsbehälter (23), einer Pumpeneinrichtung (25), einer ersten Verbindung (44) zwischen der Saugseite der Pumpeneinrichtung (25) und dem Behälter (23), einer an die Druckseite der Pumpeneinrichtung (25) angeschlossenen Düseneinrichtung (28) zum Ausspritzen von Flüssigkeit zu den Gütern in der Behandlungskammer (12), einer Einrichtung (38, 38'), womit der Flüssigkeit, die der Düseneinrichtung (28) zugeführt werden soll, Körnchen zugesetzt werden können und womit die aus der Düseneinrichtung (28) ausgespritzten Körnchen von der Flüssigkeit getrennt werden können, wobei die Einrichtung (38) zum Zusetzen und Trennen von Körnchen einen flüssigkeitsdurchlässigen Seiher (43) umfaßt, dadurch gekennzeichnet, daß die Einrichtung (38) sich innerhalb des Behälters (23) befindet, und daß eine Ventileinrichtung vorgesehen ist, um die Saugseite der Pumpeneinrichtung an die Behandlungskammer entweder über die erste Verbindung (44), so daß Körnchen in die von der Pumpeneinrichtung aufgesaugte Flüssigkeit einverleibt werden, oder über eine zweite Verbindung (47) anzuschließen, die mit der Behandlungskammer über den Seiher (43) in Verbindung steht, so daß die Körnchen vom Seiher zurückgehalten werden und nur Flüssigkeit von den Pumpeneinrichtung aufgesaugt wird, wobei die Ventileinrichtung einen allmählichen Wechsel von der ersten Verbindung (44) zur zweiten (47) und umgekehrt erlaubt.
2. Reinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Saugseite der Pumpeneinrichtung (25) an eine Saugkammer (24) angeschlossen ist, die mit dem Behälter (23) und dem Gefäß über die von den Ventileinrichtungen gesteuerten Verbindungen (44, 47) in Verbindung steht.
3. Reinigungsmaschine nach Anspruch 2, dadurch gekennzeichnet, dass sich ein Leitungsteil (40) der Einrichtung (38) durch den Behälter (23) erstreckt und in die Saugkammer (24) mündet, wobei es die Verbindungen bildet.
4. Reinigungsmaschine nach Anspruch 3, dadurch gekennzeichnet, dass das Leitungsteil (40) unterteilt ist in einen Kanal (44), welcher mit den Bodenauslass (36) der Behandlungskammer (12) zur Schaffung der Verbindung zwischen der Saugseite der Pumpeneinrichtung und der Einrichtung (38) in Verbindung steht und mit dem Behälter (23) durch Öffnungen (46) in den begrenzenden Wänden des Kanals in Verbindung steht, sowie einen weiteren Kanal (47), welcher mit dem Behälter zur Schaffung der Verbindung zwischen der Saugseite der Pumpeneinrichtung und dem Behälter in Verbindung steht.
5. Reinigungsmaschine nach Anspruch 4, dadurch gekennzeichnet, dass die Ventileinrichtung ein Ventilelement (49) zum Öffnen eines Kanals bei Schliessen des anderen und umgekehrt aufweist.
EP19790850019 1979-04-02 1979-04-02 Reinigungsmaschine Expired EP0016895B1 (de)

Priority Applications (17)

Application Number Priority Date Filing Date Title
DE7979850019T DE2967633D1 (en) 1979-04-02 1979-04-02 Cleaning machine
EP19790850019 EP0016895B1 (de) 1979-04-02 1979-04-02 Reinigungsmaschine
AT83100451T ATE23104T1 (de) 1979-04-02 1980-04-01 Reinigungsmaschine.
AU59868/80A AU544392B2 (en) 1979-04-02 1980-04-01 Cleaning machine
PCT/SE1980/000094 WO1980002105A1 (en) 1979-04-02 1980-04-01 Cleaning machine
US06/220,071 US4374443A (en) 1979-04-02 1980-04-01 Cleaning machine with particulate abrasive
DE8080900645T DE3070945D1 (en) 1979-04-02 1980-04-01 Cleaning machine
AT80900645T ATE14666T1 (de) 1979-04-02 1980-04-01 Reinigungsmaschine.
BR8008844A BR8008844A (pt) 1979-04-02 1980-04-01 Maquina de limpeza
EP83100451A EP0087566B1 (de) 1979-04-02 1980-04-01 Reinigungsmaschine
JP55500783A JPH0428366B2 (de) 1979-04-02 1980-04-01
FI801075A FI73124C (fi) 1979-04-02 1980-04-02 Rengoeringsmaskin.
EP80900645A EP0033315B1 (de) 1979-04-02 1980-10-23 Reinigungsmaschine
DK510680A DK150725C (da) 1979-04-02 1980-12-01 Opvaskemaskine
NO803632A NO151727C (no) 1979-04-02 1980-12-02 Oppvaskmaskin.
FI854290A FI75485C (fi) 1979-04-02 1985-10-31 Rengoeringshagel.
DK22486A DK22486D0 (da) 1979-04-02 1986-01-17 Opvaskemaskine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790850019 EP0016895B1 (de) 1979-04-02 1979-04-02 Reinigungsmaschine

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP82200109A Division EP0057044A3 (de) 1979-04-02 1979-04-02 Reinigungsmaschine
EP82200109.5 Division-Into 1982-01-29

Publications (2)

Publication Number Publication Date
EP0016895A1 EP0016895A1 (de) 1980-10-15
EP0016895B1 true EP0016895B1 (de) 1986-11-05

Family

ID=8186546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790850019 Expired EP0016895B1 (de) 1979-04-02 1979-04-02 Reinigungsmaschine

Country Status (2)

Country Link
EP (1) EP0016895B1 (de)
DE (1) DE2967633D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105593427A (zh) * 2013-10-03 2016-05-18 塞罗斯有限公司 清洗设备

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8301624D0 (sv) * 1983-03-24 1983-03-24 Carl Goran Christer Mosell Sett vid rengoringsmaskin
SE455265B (sv) * 1984-03-27 1988-07-04 Arne Alvemarker Blesterkroppar av kompositmaterial for att rengora diskgods
SE469923B (sv) * 1992-03-03 1993-10-11 Granuldisk Ab Granuldiskmaskin med ventil för separering av granuler ur vätskan
SE521116C2 (sv) * 1998-05-26 2003-09-30 Nat Conveyor Corp Metod och anordning för att separera granulat från rengöringsvätska i en rengöringsmaskin
SE521117C2 (sv) * 1998-04-17 2003-09-30 Nat Conveyor Corp Metod och anordning för att separera granulat från rengöringsvätska i en rengöringsmaskin
GB201002245D0 (en) * 2010-02-10 2010-03-31 Xeros Ltd Improved cleaning apparatus and method
US9375126B2 (en) * 2011-08-25 2016-06-28 King Abdulaziz University Waterless dishwasher

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802228A (en) * 1953-04-14 1957-08-13 George J Federighi Drinking glass burnishing and washing machine
DE1220095B (de) * 1960-09-02 1966-06-30 Wilhelm Lepper Dr Ing Geschirrspuelmaschine
NL282885A (de) * 1961-09-09
US3323159A (en) * 1964-12-10 1967-06-06 Gen Motors Corp Dishwasher with particle reclaiming

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105593427A (zh) * 2013-10-03 2016-05-18 塞罗斯有限公司 清洗设备

Also Published As

Publication number Publication date
EP0016895A1 (de) 1980-10-15
DE2967633D1 (en) 1986-12-11

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