EP1085833B1 - Procede et dispositif concernant une machine a nettoyer - Google Patents

Procede et dispositif concernant une machine a nettoyer 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
Other languages
German (de)
English (en)
Other versions
EP1085833A1 (fr
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
Original Assignee
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/fr
Application granted granted Critical
Publication of EP1085833B1 publication Critical patent/EP1085833B1/fr
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)

Abstract

La présente invention concerne un procédé et un dispositif de séparation des granules dans le courant de retour d'un fluide de nettoyage constitué d'un mélange de liquide et de granules d'une densité supérieure à celle du liquide. Le courant de retour traverse une chambre de traitement (10) et un réservoir (15) situé en dessous de la chambre de traitement (10), dans une machine à nettoyer comportant au moins un collecteur à granules (19). Ce collecteur à granules (19) est agencé sous forme d'une unité monobloc, de façon à passer en mode collecteur pour recueillir une quantité substantielle de courant de retour et pour y retenir les granulés. Le collecteur à granules (19) est également agencé de façon à passer en mode évacuation pour évacuer les granules retenus et pour permettre au courant de retour de circuler sans retenir les granules.

Claims (14)

  1. Procédé destiné à séparer des granules d'un écoulement de retour d'un fluide de nettoyage qui est un mélange d'un liquide et de granules présentant une masse volumique plus élevée que celle du liquide, l'écoulement de retour apparaissant en traversant une chambre de traitement (10) et une cuve (15) en dessous de la chambre de traitement (10) dans une machine de lavage comportant au moins un dispositif de recueil de granules (19), caractérisé    par l'agencement dudit dispositif de recueil des granules (19) en tant qu'unité autonome comportant des parois latérales d'enceinte (22 ; 24 ; 27) et une paroi latérale inférieure, lesdites parois formant ensemble un récipient,
       par la commande dudit dispositif de recueil de granules (19) dans un mode de recueil afin de recevoir une quantité substantielle de l'écoulement de retour et de conserver les granules dans celui-ci, tout en permettant qu'une quantité mineure de l'écoulement de retour comprenant les granules passe par le dispositif de recueil de granules (19) jusque dans la cuve (15),
       par la commande dudit dispositif de recueil de granules (19) dans un mode de libération afin de libérer les granules conservés et de permettre que l'écoulement de retour s'écoule sans conserver de granules, et
       par l'agencement dudit dispositif de recueil de granules (19) devant être monté de façon détachable dans la machine de lavage pour être détaché de celle-ci tout en conservant les granules, de façon à permettre le nettoyage de l'intérieur de la machine de lavage.
  2. Procédé selon la revendication 1, dans lequel le fluide de nettoyage est dirigé à travers les parois perforées dudit dispositif de recueil de granules.
  3. Procédé selon la revendication 1, dans lequel ledit dispositif de recueil de granules (19) est entraíné en rotation entre une première position dans son mode de recueil et une seconde position dans son mode de libération.
  4. Procédé selon la revendication 1, dans lequel les parois latérales (22) dudit dispositif de recueil de granules (19) sont entraínées en rotation entre une première position permettant à l'écoulement de retour de s'écouler entre lesdites parois latérales, ladite première position constituant le mode de libération dudit dispositif de recueil (19), et une seconde position dans laquelle les parois latérales (22) ainsi que les pignons (24, 27) forment un récipient, ladite seconde position constituant le mode de recueil.
  5. Procédé selon la revendication 1, dans lequel le dispositif de recueil de granules (19) est une boíte façonnée comprenant des parois latérales (22) et une paroi latérale inférieure (26), ladite paroi latérale inférieure (26) étant entraínée en rotation entre une première position permettant à l'écoulement de retour de passer à travers, ladite première position constituant le mode de libération dudit dispositif de recueil de granules (19), et une seconde position dans laquelle la paroi latérale inférieure (26) ferme le dispositif de recueil de granules (19) afin de conserver les granules dans celui-ci, ladite seconde position constituant le mode de recueil.
  6. Dispositif destiné à séparer des granules d'un écoulement de retour d'un fluide de nettoyage qui est un mélange d'un liquide et de granules présentant une masse volumique plus élevée que celle du liquide, l'écoulement de retour apparaissant en traversant une chambre de traitement (10) et une cuve (15) en dessous de la chambre de traitement (10) dans une machine de lavage comportant au moins un dispositif de recueil de granules (19), caractérisé    en ce que ledit dispositif de recueil de granules (19) est agencé en tant qu'unité autonome,
       en ce que ledit dispositif de recueil de granules (19) comprend des parois latérales d'enceinte (22 ; 24 ; 27) et une paroi latérale inférieure, lesdites parois formant ensemble un récipient,
       en ce que ledit dispositif de recueil de granules (19) est agencé pour entrer dans un mode de recueil afin de recevoir une quantité substantielle de l'écoulement de retour et de conserver les granules dans celui-ci, tout en permettant qu'une quantité mineure de l'écoulement de retour comprenant les granules passe par le collecteur de granules (19) jusque dans la cuve (15),
       en ce que ledit dispositif de recueil de granules (19) est agencé pour entrer dans un mode de libération afin de libérer les granules conservées et pour permettre que l'écoulement de retour s'écoule sans conserver les granules,
       en ce que ledit dispositif de recueil de granules (19) et est monté de façon amovible dans la machine de lavage pour être détaché de celle-ci avec les granules qui sont conservés dans celui-ci.
  7. Dispositif selon la revendication 6, dans lequel le dispositif de recueil de granules (19) comprend des parois latérales perforées (22) de façon à permettre au fluide de nettoyage de passer à travers le dispositif de recueil de granules (19) quel que soit le mode.
  8. Dispositif selon la revendication 6, dans lequel le dispositif de recueil de granules (19) est monté avec possibilité de rotation.
  9. Dispositif selon la revendication 6, dans lequel le dispositif de recueil de granules (19) est une boíte façonnée comprenant des parois latérales et une paroi latérale inférieure et un côté supérieur ouvert.
  10. Dispositif selon la revendication 6, dans lequel les parois latérales (22) du dispositif de recueil de granules (19) sont montées pour être entraínées en rotation entre une première position formant un passage ouvert pour l'écoulement de retour, et une seconde position formant en association avec les pignons opposés un récipient destiné à conserver les granules apparaissant dans l'écoulement de retour.
  11. Dispositif selon la revendication 6, dans lequel une paroi latérale inférieure (26) du dispositif de recueil de granules (19) est montée pour être entraínée en rotation entre une première position formant un passage ouvert pour l'écoulement de retour, et une seconde position formant en association avec les parois latérales (22) et les pignons opposés un récipient destiné à conserver les granules apparaissant dans l'écoulement de retour.
  12. Dispositif selon la revendication 6 et la revendication 7, dans lequel ledit dispositif de recueil de granules (19) est monté avec possibilité de rotation sur un axe (20) s'étendant à travers les parois latérales (22).
  13. Dispositif selon la revendication 6, dans lequel un moyen de direction d'écoulement (28) est prévu sur le dispositif de recueil de granules (19).
  14. Dispositif selon la revendication 13, dans lequel le moyen de direction d'écoulement (28) comprend un panneau muni de trous traversants qui sont dimensionnés pour permettre le passage de granules à travers le panneau et qui sont agencés verticalement au-dessus du dispositif de recueil de granules (19).
EP99925506A 1998-04-17 1999-04-13 Procede et dispositif concernant une machine a nettoyer Expired - Lifetime EP1085833B1 (fr)

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 (fr) 1998-04-17 1999-04-13 Procede et dispositif concernant une machine a nettoyer

Publications (2)

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

Family

ID=20410992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99925506A Expired - Lifetime EP1085833B1 (fr) 1998-04-17 1999-04-13 Procede et dispositif concernant une machine a nettoyer

Country Status (7)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103501677A (zh) * 2011-03-17 2014-01-08 艺康美国股份有限公司 从再循环的洗涤溶液连续或间断除去污物的组合物和方法
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 (fr) * 1979-04-02 1986-11-05 Carl Göran Christer Mosell Machine de nettoyage
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
WO1999053822A1 (fr) 1999-10-28
SE9801343L (sv) 1999-10-18
DE69906521D1 (de) 2003-05-08
JP4228067B2 (ja) 2009-02-25
DE69906521T2 (de) 2004-04-01
CN1296396A (zh) 2001-05-23
JP2002512064A (ja) 2002-04-23
EP1085833A1 (fr) 2001-03-28
CN100396226C (zh) 2008-06-25
SE9801343D0 (sv) 1998-04-17
AU4176899A (en) 1999-11-08
SE521117C2 (sv) 2003-09-30

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