EP1085833B1 - Verfahren und vorrichtung in einer trockenreinigungsmaschine - Google Patents

Verfahren und vorrichtung in einer trockenreinigungsmaschine Download PDF

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Publication number
EP1085833B1
EP1085833B1 EP99925506A EP99925506A EP1085833B1 EP 1085833 B1 EP1085833 B1 EP 1085833B1 EP 99925506 A EP99925506 A EP 99925506A EP 99925506 A EP99925506 A EP 99925506A EP 1085833 B1 EP1085833 B1 EP 1085833B1
Authority
EP
European Patent Office
Prior art keywords
granules
granule collector
return flow
granule
collector
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 - Lifetime
Application number
EP99925506A
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English (en)
French (fr)
Other versions
EP1085833A1 (de
Inventor
Bertil Rogmark
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.)
NATIONAL CONVEYOR Corp
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NATIONAL CONVEYOR Corp
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Filing date
Publication date
Application filed by NATIONAL CONVEYOR Corp filed Critical NATIONAL CONVEYOR Corp
Publication of EP1085833A1 publication Critical patent/EP1085833A1/de
Application granted granted Critical
Publication of EP1085833B1 publication Critical patent/EP1085833B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L15/0002—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
    • A47L15/0094—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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/18—Liquid and granule

Definitions

  • This invention relates to a method and a device in a cleaning machine to clean goods using as a cleaning fluid either a liquid mixed with granules or the liquid itself only.
  • the granules have a density higher than that of the liquid.
  • the liquid can be any liquid with cleaning properties but usually consist of water with various additives to enhance and improve the cleaning properties.
  • Goods in this context refer to the soiled objects that are to be cleaned. Goods could be any objects that require to be cleaned but usually refers to pots, pans and other kitchen and cooking utensils that are difficult to clean with traditional cleaning machines.
  • the cleaning fluid is pumped from a tank and discharged under pressure against the goods disposed in a treatment chamber. If the goods are heavily soiled the cleaning fluid consists of a liquid mixed with granules. At the end of the cleaning operation it is necessary to flush the goods with a liquid without the granules in order to remove that granules from the goods.
  • This calls for a separation method that can be activated in order to separate the granules from the cleaning fluid and de-activated when it is desirable to mix granules into the cleaning fluid. If the goods are less soiled, the separation method is never de-activated which enables the cleaning of the goods using a cleaning fluid without granules. After having been discharged against the goods the cleaning fluid is allowed to flow back as a return flow into the tank from which it is re-circulated for as long as it is desired that the cleaning cycle should last.
  • Cleaning machines functioning according to the principle described above exist, using various methods to separate the granules from the cleaning fluid. These methods include using sieves or letting the heavy granules sediment in a partition of the tank.
  • EP-A-0016895 relates to a dishing machine of the same basic type as the device according to the invention.
  • the dishing machine is provided with a treatment chamber and a liquid container.
  • An opening is provided there between.
  • the opening is closed by a container, which can be removed through the opening.
  • the container extends to a suction chamber from which liquid or a mixture of liquid and granules is sucked up to be ejected against objects in the treatment chamber.
  • the container of EP-A-0016895 is formed by three side walls and a bottom wall.
  • a fourth side of the container is open. The opening at the fourth side is closed or left open by means of a separate device including a plate valve arranged in the suction chamber.
  • the plate valve of EP-A-0016895 can be moved between a first position, in which granules and liquid are allowed to leave the container and reach the suction chamber, and a second position, in which only liquid is allowed to exit from perforated side walls of the container and reach the suction chamber.
  • SE-B-469507 relating to a dishing machine that is provided with a treatment chamber and a separating wall formed therein.
  • the separating wall defines together with walls of the treatment chamber an upwardly open chamber.
  • the separating wall is at lower section provided with a pivotable flap, which in a first position closes the lower part of the chamber. In a first position granules are collected in the chamber. In a second position of the flap granules are allowed to leave the chamber, so as to be able to reach a drain.
  • a further object of the invention is to provide through the design of said apparatus, a simple method for removing the collected granules from the machine.
  • a still further object is to provide a simple machine that can be produced at a low cost.
  • This invention addresses these problems by offering a simple method of combining the separation and the collection of the granules, leaving the tank interior accessible for cleaning and also facilitating the cleaning of the granules themselves as well as the measuring of the amount of granules in the machine to see if more granules are needed. At the same time it simplifies the design of the machine which in turn lowers the manufacturing costs.
  • a collector for granules is provided in the return flow of cleaning fluid including granules through the treatment chamber and the tank to a tank outlet to the pump.
  • the collector is detachable from the cleaning machine while holding the granules.
  • a collect mode the collector will allow liquid to pass through and by the collector while retaining the granules.
  • a release mode the collector will release previously collected granules into the cleaning fluid and also let the return flow of cleaning fluid to pass by or through the collector without retaining the granules from the liquid.
  • a cleaning machine comprises of a treatment chamber 10 in which goods 11 are placed in a washing rack 12. Nozzles 13 in a discharge pipe 14 are provided through which the cleaning fluid including granules is discharged under pressure against the goods 11. After impacting the goods 11 the granules, together with liquid, form a return flow.
  • a tank 15 receiving the return flow from the treatment chamber 10. From an outlet 21 of the tank 15 the cleaning fluid is taken by a pumping device 16 which discharges the cleaning fluid into a conduit 17 leading to a discharge pipe 18.
  • One or more granule collectors 19 are provided in the return flow, either in the tank 15 as shown in FIG 1 or in the treatment chamber 10.
  • the granule collectors 19 are formed as self-contained units, that is the collectors are separate from the walls of the treatment chamber 10 and the tank 15.
  • FIG 1 shows an embodiment having two granule collectors 19 mounted side by side in the tank 15.
  • the granule collectors shown comprise side walls 22, a bottom side wall 26, a rear gable end wall 24 and a front gable end wall 27, said walls forming together a box or container. Some or all of the walls may be perforated. In the shown embodiment the side walls 22 have been perforated.
  • a net or similar device is used to collect the granules in the granule collectors while allowing the cleaning liquid to pass through openings therein.
  • the collectors 19 can be made to occupy different positions in relation to said flow, so as to change from the collect mode to the release mode and back as desired.
  • the granule collectors may be hinged on at least one shaft 23, so as to rotate from one position to the other by means of the actuators. In other embodiments the granule collectors change the mode of operation through a sliding movement or a combination of a rotating and a sliding movement.
  • the granule collectors 19 are fitted to the actuating device in such a way that they can be lifted out of the machine together with the collected granules, thus leaving the interior of the machine free from granules and easily accessible for cleaning purposes and also to facilitate the cleaning of the granules. In this way also the measuring of the amount of granules will be facilitated and more granules can easily be added if needed.
  • the granule collectors 19 capture all or a portion of the return flow, and granules will be retained therein while the cleaning fluid is allowed to pass through or by the collectors. In this way the granules will be separated from the cleaning fluid.
  • the granule collectors 19 will not receive the complete return flow. Some part thereof, this part also including granules, will pass by the granule collectors and will be re-circulated to the treatment chamber 10. However, only a few iterations will be required until all granules are collected.
  • the return flow normally is very vigorous and granules already collected in the granule collectors 19 can be forced out thereof. It may be appropriate to include a flow director or a coarse screen or a similar device to protect the granule collectors from a direct impact of the return flow. An example of such a device is shown in FIG 3 and FIG 4.
  • FIG 2 shows the collectors 19 in the release mode. After displacement into such a second position, the collectors 19 will release the granules into the cleaning fluid and will not collect any granules from the return flow of the cleaning fluid.
  • FIG 3 shows a first alternative embodiment of granule collectors 19 in the release mode.
  • two opposing side walls 22 of the granule collectors are arranged pivotable on a shaft 23.
  • the side walls 22 are formed with through holes 25.
  • the size of the through holes is smaller than the size of the granules.
  • the granule collector also comprises a rear gable end wall 24 and an opposing front gable end wall (not shown). No granules are captured or retained in this position.
  • a flow directing means 28 is arranged above the tank 15.
  • the flow directing means 28 there is provided a plurality of granule openings 29. The size and location of the granule openings 29 will allow granules to pass through the flow directing means 28 and to enter into the granule collectors 19. Thus, the granule collectors 19 will be filled with granules faster and granules will not be washed away.
  • the side walls 22 have been pivoted in opposite directions to form a V, and the granule collectors are in the collect mode.
  • the granule collectors 19 are connected to actuators for rotating the side walls 22 in such a way that the granule collector 19 can be removed from the machine with the granules collected therein.
  • FIG 5 shows a second alternative embodiment of granule collectors 19 in the release mode.
  • a box like granule collector 19 arranged in the treatment chamber 10 comprises side walls 22, rear and front gable end walls 24, 27 and a pivotable bottom side wall 26.
  • the bottom side wall 26 is pivoted to an open position allowing fluid and granules to pass through the granule collector.
  • FIG 6 the bottom side wall 26 of the granule collectors in FIG 5 has been pivoted into a closed position and the granule collector is in the collect mode.
  • the granule collectors 19 are connected to actuators for rotating the bottom side wall 26 in such a way that the granule collectors 19 can be removed from the machine with the granules collected therein.

Landscapes

  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (14)

  1. Verfahren zur Abscheidung von Granulat von einem Rückstrom eines Reinigungsfluids, bei dem es sich um ein Gemisch aus einer Flüssigkeit und einem Granulat handelt, das im Vergleich zu der Flüssigkeit eine höhere Dichte aufweist, wobei der Rückstrom durch eine Behandlungskammer (10) und einen unterhalb der Behandlungskammer (10) angeordneten Tank (15) in eine Reinigungsmaschine gelangt, die mindestens einen Granulatabscheider (19) aufweist, gekennzeichnet durch
    das Anordnen des Granulatabscheiders (19) als eine unabhängige Einheit mit einfassenden Seitenwänden (22; 24; 27) und einer unteren Seitenwand, wobei die Wände zusammen einen Behälter bilden;
    das Steuern des Granulatabscheiders (19) in einen Auffang-Modus zum Aufnehmen einer wesentlichen Menge des Rückstroms und zum Zurückhalten des Granulats darin, während eine geringfügige Menge des Rückstroms samt dem Granulat an dem Granulatabscheider (19) vorbei in den Tank (15) gelangen kann;
    das Steuern des Granulatabscheiders (19) in einen Freigabe-Modus zum Freigeben des zurückgehaltenen Granulats, wobei es möglich ist, dass der Rückstrom vorbeifließt, ohne dass Granulat zurückgehalten wird; und
    das Anordnen des Granulatabscheiders (19) derart, dass dieser herausnehmbar in der Reinigungsmaschine angebracht ist, um aus dieser herausgenommen zu werden, während er das Granulat enthält, so dass die Reinigung des Innenraums der Reinigungsmaschine ermöglicht wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Reinigungsfluid durch Siebwände des Granulatabscheiders geleitet wird.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Granulatabscheider (19) zwischen einer ersten Position in seinem Auffang-Modus und einer zweiten Position in seinem Freigabe-Modus gedreht wird.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass Seitenwände (22) des Granulatabscheiders (19) zwischen einer ersten Positon, die das Vorbeifließen des Rückstroms zwischen den Seitenwänden erlaubt, und einer zweiten Position, in der die Seitenwände (22) zusammen mit den Giebelwänden (24, 27) einen Behälter bilden, gedreht werden, wobei die erste Position den Freigabe-Modus des Granulatabscheiders (19) darstellt und die zweite Position den Auffang-Modus.
  5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Granulatabscheider (19) kastenförmig mit Seitenwänden (22) und einer unteren Seitenwand (26) ausgebildet ist, wobei die untere Seitenwand (26) zwischen einer ersten Position, die den Durchfluss des Rückstroms erlaubt, und einer zweiten Position, in der die untere Seitenwand (26) den Granulatabscheider (19) schließt, um das Granulat darin zurückzuhalten, gedreht wird, wobei die erste Position den Freigabe-Modus des Granulatabscheiders (19) darstellt und die zweite Position den Auffang-Modus.
  6. Vorrichtung zur Abscheidung von Granulat von einem Rückstrom eines Reinigungsfluids, bei dem es sich um ein Gemisch aus einer Flüssigkeit und einem Granulat handelt, das im Vergleich zu der Flüssigkeit eine höhere Dichte aufweist, wobei der Rückstrom durch eine Behandlungskammer (10) und einen unterhalb der Behandlungskammer (10) angeordneten Tank (15) in eine Reinigungsmaschine gelangt, die mindestens einen Granulatabscheider (19) aufweist, gekenn zeichnet dadurch, dass
    der Granulatabscheider (19) als eine unabhängige Einheit ausgebildet ist;
    der Granulatabscheider (19) einfassende Seitenwände (22; 24; 27) und eine untere Seitenwand aufweist, wobei die Wände zusammen einen Behälter bilden;
    der Granulatabscheider (19) so angeordnet ist, dass er zum Aufnehmen einer wesentlichen Menge des Rückstroms und zum Zurückhalten des Granulats darin in einem Auffang-Modus arbeitet, während eine geringfügige Menge des Rückstroms samt dem Granulat an dem Granulatabscheider (19) vorbei in den Tank (15) gelangen kann;
    der Granulatabscheider (19) so angeordnet ist, dass er zum Freigeben des zurückgehaltenen Granulats in einem Freigabe-Modus arbeitet, und es möglich ist, dass der Rückstrom vorbeifließt, ohne dass Granulat zurückgehalten wird; und
    der Granulatabscheider (19) in der Reinigungsmaschine herausnehmbar befestigt ist, um aus dieser zusammen mit dem darin zurückgehaltenen Granulat herausgenommen zu werden.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Granulatabscheider (19) Siebwände (22) aufweist, so dass Reinigungsfluid in beiden Modi durch den Granulatabscheider (19) hindurchströmen kann.
  8. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Granulatabscheider (19) drehbar befestigt ist.
  9. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Granulatabscheider (19) kastenförmig mit einer Unterseite, Seitenwänden und einer offenenen Oberseite ausgebildet ist.
  10. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Seitenwände (22) des Granulatabscheiders (19) drehbar zwischen einer ersten Position, die einen offenen Durchgang für den Rückstrom bildet, und einer zweiten Position, die zusammen mit den gegenüberliegenden Giebelwänden einen Behälter zum Zurückhalten des in dem Rückstrom enthaltenen Granulats bildet, befestigt sind.
  11. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass eine untere Seitenwand (26) des Granulatabscheiders (19) drehbar zwischen einer ersten Position, die einen offenen Durchgang für den Rückstrom bildet, und einer zweiten Position, die zusammen mit Seitenwänden (22) sowie gegenüberliegenden Giebelwänden einen Behälter zur Aufnahme des in dem Rückstrom enthaltenen Granulats bildet, befestigt ist.
  12. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Granulatabscheider (19) drehbar auf einer Welle (20) befestigt ist, die sich durch die Seitenwände hindurch erstreckt.
  13. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass eine Strömungs-Lenkvorrichtung (28) oberhalb des Granulatabscheiders (19) vorgesehen ist.
  14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass die Strömungs-Lenkvorrichtung (28) eine Platte mit darin ausgebildeten Durchbohrungen aufweist, die so bemessen sind, dass ein Durchfluss von Granulat durch die Platte möglich ist, und die vertikal oberhalb des Granulatabscheiders (19) angeordnet sind.
EP99925506A 1998-04-17 1999-04-13 Verfahren und vorrichtung in einer trockenreinigungsmaschine Expired - Lifetime EP1085833B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9801343A SE521117C2 (sv) 1998-04-17 1998-04-17 Metod och anordning för att separera granulat från rengöringsvätska i en rengöringsmaskin
SE9801343 1998-04-17
PCT/SE1999/000590 WO1999053822A1 (en) 1998-04-17 1999-04-13 Method and device in a cleaning machine

Publications (2)

Publication Number Publication Date
EP1085833A1 EP1085833A1 (de) 2001-03-28
EP1085833B1 true EP1085833B1 (de) 2003-04-02

Family

ID=20410992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99925506A Expired - Lifetime EP1085833B1 (de) 1998-04-17 1999-04-13 Verfahren und vorrichtung in einer trockenreinigungsmaschine

Country Status (7)

Country Link
EP (1) EP1085833B1 (de)
JP (1) JP4228067B2 (de)
CN (1) CN100396226C (de)
AU (1) AU4176899A (de)
DE (1) DE69906521T2 (de)
SE (1) SE521117C2 (de)
WO (1) WO1999053822A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012123927A2 (en) * 2011-03-17 2012-09-20 Ecolab Usa Inc. Composition and method for continuous or intermittent removal of soil from recirculated washing solution
CN109480739A (zh) * 2019-01-07 2019-03-19 山东格蓝科思清洗科技有限公司 餐具清洗机颗粒清洗机构
CN109744932A (zh) * 2019-02-22 2019-05-14 重庆大学 高空玻璃外墙清洁机器人
CN112057013B (zh) * 2020-08-25 2022-04-05 陈瑜 一种多角度粒子清洗设备
CN112057014A (zh) * 2020-08-25 2020-12-11 陈瑜 一种水路系统及餐具清洗设备
CN112155489B (zh) * 2020-08-25 2022-04-05 陈瑜 一种粒子清洗设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323159A (en) * 1964-12-10 1967-06-06 Gen Motors Corp Dishwasher with particle reclaiming
FI47722C (fi) * 1972-10-06 1974-03-11 Leppaelae Astianpesukone.
SE419820B (sv) * 1979-10-09 1981-08-31 Carl Goran Christer Mosell Rengoringsmaskin med anordning for blestring av det gods, som skall rengoras, medelst vetska som innehaller granuler
EP0016895B1 (de) * 1979-04-02 1986-11-05 Carl Göran Christer Mosell Reinigungsmaschine
SE464387B (sv) * 1989-08-17 1991-04-22 Elektrosandberg Ab Med granuler arbetande rengoeringsmaskin
SE469507B (sv) * 1991-03-01 1993-07-19 Viptop Ab Granuldiskmaskin innefattande en skiljevaegg med ett svaengbart nedre parti foer separering av granuler ur rengoeringsvaetskan

Also Published As

Publication number Publication date
DE69906521D1 (de) 2003-05-08
DE69906521T2 (de) 2004-04-01
WO1999053822A1 (en) 1999-10-28
SE9801343D0 (sv) 1998-04-17
JP2002512064A (ja) 2002-04-23
EP1085833A1 (de) 2001-03-28
AU4176899A (en) 1999-11-08
SE521117C2 (sv) 2003-09-30
CN1296396A (zh) 2001-05-23
CN100396226C (zh) 2008-06-25
SE9801343L (sv) 1999-10-18
JP4228067B2 (ja) 2009-02-25

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