WO2012139772A1

WO2012139772A1 - Conveyor dishwasher having a special treatment zone

Info

Publication number: WO2012139772A1
Application number: PCT/EP2012/001618
Authority: WO
Inventors: Thomas Peukert; Stefan Scheringer; Engelbert Ecker; Bruno Gaus; Wendelin Hils; Thomas NÄGER
Original assignee: Meiko Maschinenbau Gmbh & Co. Kg
Priority date: 2011-04-15
Filing date: 2012-04-13
Publication date: 2012-10-18
Also published as: DE102011017294A1

Abstract

The invention relates to an apparatus for cleaning washware (120), in particular a conveyor-type dishwasher (112). Said apparatus comprises a plurality of treatment zones (132, 142, 149, 150, 160, 200) for the items (120) which are to be cleaned and which are transported continuously or intermittently through the treatment zones (132, 142, 149, 150, 160, 200). The treatment zones (132, 142, 149, 150, 160, 200) comprise at least one special treatment zone (200) which can be activated depending on the degree of soiling of the washware (120).

Description

Transport dishwasher with special treatment zone

TECHNICAL FIELD The present invention relates to a dishwasher, in particular a dishwasher for dishes, glasses, kitchen utensils, medical items, industrial containers, for example in the form of a multi-tank transport dishwasher, for example for commercial dishwashing. State of the art

Dishwashers in the form of Mehrtanktransportspülmaschinen are well known. These multi-tank transport washing machines of conventional design have a structure and a fluid guide in the manner that the tanks are hydraulically connected to each other by means of a cascaded system. By this type of hydraulic connection, the zones are procedurally dependent on each other and / or influence each other. At the same time these dependencies are not to be influenced or changed during operation, so that these are given by the structural conditions of the machines. In particular, mention should be made in this connection of a predetermined overflow height, from which fluid overflows from a tank located lower in the direction of the fall.

Methods are known in which the material to be cleaned is carried out within a treatment zone under a special spraying system which, for example, applies highly concentrated alkaline or highly concentrated acidic liquids to the material to be cleaned.

DE 101 27 919 A1, for example, discloses a cleaning process for starch removal. The method comprises one or more alkaline cleaning steps and / or acid cleaning steps, in particular for machine dishwashing in commercial Cleaning steps, in particular for machine dishwashing in commercial dishwashers, in which mainly starch deposits are removable. An alkaline cleaning step is followed by an acidic cleaning step and this acidic cleaning step is followed by an alkaline cleaning step, with the proviso that a total of at least three purification steps take place.

DE 102 57 391 A1 also relates to a process for the acidic cleaning of items to be cleaned. By the method disclosed herein is a continuous or discontinuous dishwashing, which can be used both in single and in multi-tank machines. First, the material to be cleaned is treated with at least one process step with an acidic and in a further process step with an alkaline cleaning solution. There is first the application of an acidic, aqueous cleaning solution to the at least partially soiled dishes; Subsequently, the removal of said acidic aqueous cleaning solution and the soil takes place in one or more subsequent steps, wherein the at least one alkaline treatment can take place before and / or after the acid treatment and at least partially neutralize the alkaline and the at least one acidic aqueous cleaning solution. In the solutions according to DE 101 27 919 A1 as well as the according to DE 102 57 391 AI concentrates flow over the items to be cleaned and then drip into each of the wash tank below. Due to the inflowing concentrates, the cleaning liquid in this tank and all hydraulically connected tanks, possibly also negative, e.g. influenced by neutralization of alkalinity. Furthermore, single-chamber dishwashers with a stationary washing process are known, in which the items to be cleaned are treated with a granular rinsing step in one program step. Such granule dishwasher is known for example from WO 9317610. The device disclosed in WO 9317610 comprises a pump for conveying a fluid with or without granules, which is heavier than the liquid.

The known from the prior art, or devices have disadvantages such that the structure and the leadership of the cleaning fluid in a conventional multi-tank transport dishwasher, such as with a cascade system between the tanks, does not offer the possibility that a hydraulically independent special treatment zone so For example, a Granulatspülzone can be integrated into this. In a conventional multi-tank conveyor dishwasher is the Effect of washing mechanics limited by the rays of the cleaning fluid. Particularly heavily soiled items to be cleaned, such as casserole dishes with baked-on residues and containers with strongly dried or burnt-in food residues, must either be subjected to an additional, usually upstream manually performed cleaning step, or can not be cleaned at all in the multi-tank conveyor to achieve a reasonably satisfactory cleaning result become.

Presentation of the invention

The proposed solution according to the invention is based on the object, in view of the disadvantages of the solutions of the prior art, to provide a dishwasher, in particular a multi-tank conveyor dishwasher, in which a standard special treatment zone between existing treatment zones for the material to be cleaned is integrated.

According to the invention, this object is achieved by the features of claim 1, according to which an installation of at least one special treatment zone, for example, takes place after Vorabräumzone, or this special treatment zone is after the first washing zone. Alternatively, it is possible to arrange the special treatment zone at other points of the multi-tank transport dishwasher. The at least one special treatment zone is hydraulically connected to the other treatment zones or, alternatively, designed to be partially or completely self-sufficient. This may mean that no cleaning solution is conducted from an upstream and / or downstream zone into the special treatment zone and / or that no cleaning solution from the special treatment zone in one of these upstream or subsequent zones is performed and / or that the wastewater from the special treatment zone run separately and / or disposed of separately. This "isolation" of the at least one special treatment zone is made possible by the fact that the standard tanks of Mehrtanktransporterpülmaschine are not connected hydraulically via cascades, but for example via a pump system, such as Meiko M-filter pumps, which are already well established in the market For example, transport means used as part of the multi-tank transport dishwasher is a circulating endless link belt, which is made, for example, of plastic material will be produced. The conveyor belt, for example in the form of an endlessly circulating finger band, can either be guided completely in one strand through the standard treatment zones and through the special treatment zone proposed according to the invention. Alternatively, it is also possible to arrange several means of transport ie several endless belts in the dishwasher such that a first endless circulation transport means takes over the transport of the cleaning material in the first section of a cleaning zone, whereas a second transport promotes the material to be cleaned through the special treatment zone and finally a third Transport is provided, which promotes the cleaning material through the remaining parts of the cleaning zone or the multi-tank transport dishwasher.

In the event that the at least one special treatment zone is designed as a granular purging zone, for example, an empty zone, then the actual Granulatspülzone, ie the special treatment zone, and provided after the Granulatspülzone another empty zone. This design ensures that the standard rinse zones can be kept free of cleaning granulate. The special treatment zone, for example, designed as a _^ Granulatspülzone, boasts its own circulation pump and a special washing system. Furthermore, the treatment zone, which is designed in particular as a granulation zone, has a specially designed collecting and filling system in order to reintroduce the cleaning granules into the fluid circuit. Whether the granules are added before or after the circulating pump, may initially stand there. It is conceivable that the supply of the cleaning granules after the circulation pump has positive effects on the durability of the granules, which is due to the fact that the granules do not come into contact with the impeller of the pump.

The mode of operation of the multi-tank transport dishwasher with special treatment zone proposed according to the invention is as follows:

The material to be cleaned is placed at the inlet of the multi-tank transport dishwasher on the endless trained example of plastic transport in the form of an endless finger belt and then runs into the dishwasher. In a first zone, coarse food particles are rinsed off and the entire dirt is soaked with cleaning liquid. This is the pre-evacuation zone. This is a special treatment zone downstream in which the cleaning material is subjected to a treatment that can not be made in the multi-tank composite of a standard trained multi-tank conveyor dishwasher. A treatment of the cleaning material taking place in the special treatment zone comprises, for example, the following steps:

Applying a cleaning liquid having a special chemical formulation which is incompatible with the other media or which could adversely affect the effect of the other media. The special treatment may further comprise a treatment of the cleaning product with an enzymatic cleaner, which requires a neutral adjustment of the cleaning liquid. Furthermore, there is the possibility of the cleaning material in the context of special treatment with an alcoholic cleaning fluid or e.g. to treat with salt water. Furthermore, the special treatment zone downstream of the pre-evacuation zone would offer the possibility of irradiating the material to be cleaned with pellets of ice or treating the material to be cleaned with cleaning granules.

The mode of operation of the special treatment zone, which can be designed, for example, as a granulate rinsing zone, is as follows:

In the designed as Granulatspülzone special treatment zone cleaning granules is sprayed together with cleaning fluid from nozzles on the material to be cleaned. The granules can be made, for example, of plastic with a density which is significantly greater than 1.0 g / cm ³ , for example 1.4 g / cm ³ _; or even heavier. This is achieved, for example, by adding barium sulfate, for example, to a plastic material such as PP, mineral additives, for example, before the granules are produced. Alternatively, plastics with a corresponding density, for example POM, can also be used. The mass of the individual granules used allows an increased pulse, so that their impact on the material to be cleaned, a reinforcement of a dirt-dissolving or residue-removing effect against a cleaning liquid can be achieved only on a water basis. Following the designed as Granulatspülzone special treatment zone to be cleaned passes through other zones of Mehrtanktransportspülmaschine, which are configured in a known manner, for example, several cleaning zones, a Pumpenklarspülzone, a fresh water rinse and a drying zone. On the one hand, prior to the special treatment zone designed as a granulate rinsing zone and after this connected empty zones, on the one hand, the cleaning granules are kept in the special treatment zone designed as a granular rinsing zone and a carryover to other cleaning zones is prevented. A discharge of cleaning granules from the special treatment zone is to be avoided, since otherwise this would be lost for use in the Granulatspülzone and would be permanently replaced again. Furthermore, in case of carryover from the special treatment zone, the granules may possibly clog spray nozzles of adjacent cleaning zones and clog with them. Furthermore, the empty zones upstream or downstream of the special treatment zone make it possible to increase the soaking effect on the persistent soiling or caking.

The length, as seen in the transport direction, in which designed as Granulatspülzone special treatment zone can be dimensioned, for example, 800 mm, designed as Granulatspülzone special treatment zone each empty zones upstream or downstream, in the transport direction of the material to be cleaned, for example, a length can each have about 300 mm. This exemplary arrangement would result in a contact time of the granular rinsing zone of 60 seconds on the material to be cleaned, for example, by means of a transport speed of the items to be cleaned by the multi-tank transport dishwasher of 0.8 m per minute. By influencing the degree of contamination of the goods to be cleaned, or a need-based, lowering the transport speed of the material to be cleaned by the multi-tank transport dishwasher, the contact time can be doubled without any problems, d. H. be extended to 120 seconds.

The other aspects of the proposed solution according to the invention are that the multi-tank transport dishwasher can be configured with a recognition for the items to be cleaned, such as a camera with image recognition, at the inlet of the dishwasher, so that the special treatment zone can only be turned on as needed; just then, especially when heavily soiled dishes, such as casserole dishes with baked starch residues, are to be cleaned. However, the special treatment zone can also be activated manually, eg by the operating personnel, and switched off again. Similarly, a shutdown after a stored time in the control is conceivable. In the event that the special treatment zone is designed as an acid zone, the effluents of this zone waste water other alkaline zones could be fed, so that optionally results in a neutralization of the waste water of the multi-tank conveyor dishwasher. Furthermore, the cleaning fluid in the at least one special treatment zone can be exchanged or completely renewed independently of the filling of the remaining zones.

By the proposed solution according to the invention, a special, additional to be performed treatment to be cleaned Good that is independent of the rest, to be performed by default cleaning process, the continuous operation of Mehrtanktransportspülmaschine and the associated economic advantage can be obtained. The cleaning solution, which is used in the special treatment zone, can be disposed of separately, as well as the wastewater produced in it. The cleaning process and the treatment sequence in the rinsing zones provided by default in the multi-tank transport dishwasher remain unaffected by the process in the special treatment zone, whether this is designed as a granular rinsing zone or is designed as an acid treatment zone.

Brief description of the drawings

With reference to the drawings, the invention will be described in more detail below. Show it:

1 shows a standard configured multi-tank transport dishwasher and Figure 2 shows a variant of an inventively proposed

Multi-tank transport dishwasher with at least one

Special treatment zone,

3 shows a section of the multi-tank conveyor dishwasher according to FIG. 2, which shows the special treatment zone and the upstream and downstream empty zones. The illustration according to FIG. 1 shows a conventional conveyor dishwasher 1 12. A cleaning device 1 10, in particular designed as a continuous or transporting dishwasher 1 12, comprises a housing 1 14 which encloses a cleaning tunnel 1 16. At least one transporting device 1 18 is located in the cleaning device 110 formed as a throughflow dishwasher 1 12. The transporting device 18 can be embodied, for example, as a link belt or a finger band or the like and is generally designed as an endless circulating conveyor belt, which cleaning material 120 is in the transport direction 130 transported by individual sequentially arranged in succession treatment zones of the continuous dishwashing machine 1 12 according to Figure 1. The items to be cleaned 120 may be both goods that are placed directly on the transport device 18, or such items to be cleaned, which are arranged in baskets, in the transport direction 130 by placing a corresponding basket on the transport device 1 18 through the individual treatment zones of the conveyor dishwasher 1 12 is transported. Both execution options are available.

The items to be cleaned 120 may be, for example, cutlery, dishes, glasses, pots, pans, universal containers, so-called catering containers, and the like. Likewise, it is possible as a cleaning material 120 housing forms, tools or the like to be transported through the cleaning device 110 and to clean them by treatment in the individual treatment zones of the cleaning device 1 10.

The item to be cleaned 120 is placed either directly on the transport device 18 at the inlet 122, which is adjoined by an inlet opening 124, or, as mentioned above, placed in baskets which in turn are applied to the transport device 118. The inlet 122 comprises an inlet opening 124, which is closed by a separation curtain 128. At the inlet 122 closes, seen in the transport direction 130 of the cleaning material 120, a number of cleaning zones 127 at. The cleaning zones 127, for their part, can be distinguished in rinse zones 131 and in rinse zones 149. After entry of the cleaning material 120 through the inlet opening 124, the cleaning material 120 passes into a Vorabräumzone 132, are removed in the coarse food residues. In the pre-evacuation zone 132 there is a cleaning system 134 ^', for example a pre-evacuation zone spray nozzle system 136. In the pre-evacuation zone 132, there is also a pre-evacuation zone tank 138 and a pre-evacuation zone pump 140. Further, cleaning liquid is continuously circulated in the pre-evacuation zone 132, so here the coarsest food particles are rinsed off the items to be cleaned 120.

Separated by a further separating curtain 128, a main purging zone 142 adjoins the pre-evacuation zone 132 in the transport direction 130. The main purging zone 142 is part of the purging zone 131. In the main purging zone 142 is a main purging spray nozzle system 144. Further, the main purging zone 142 is associated with a main purging tank 146 as well as a main purging pump 148 with which the main purging spray nozzle system 144 continuously purifies is supplied, which applies this to the cleaning 120.

The rinse zone 131 is followed by the rinse-off zone 149, which comprises, for example, a pump rinsing zone 150 and a fresh-water rinsing zone 160. The pump rinse zone 150 includes a pump rinse zone tank 152 and a pump rinse zone spray nozzle system 156. In addition, the pump rinse zone 150 includes a pump rinse pump 158 with which the rinse liquid in the pump rinse zone 150 is continuously circulated.

A fresh-water rinsing zone 160 adjoins the pump rinsing zone 150 as shown in FIG. The Frischwasserklarspülzone 160 flows through a fresh water inlet 164 fresh water, which can be heated in a fresh water boiler or in a water heater 166. The Frischwasserklarspülzone 160 also includes a Frischwasserklarspülzonen spray nozzle system 162, via which the mentioned fresh water is applied in the Frischwasserklarspülzone 160 to the cleaning 120 and this rinses clear.

The fresh-water rinsing zone 160 as shown in FIG. 1 is followed by a drying zone 168 which comprises a blower 170 for drying. The illustration according to FIG. 1 shows that the water flowing in through the fresh water inlet 164 is guided via a heat recovery device 172, in FIG which heat is extracted from an exhaust air flow 184, which flows through the channel 182. The exhaust air flow 184 is generated by a blower 174, which withdraws the moist exhaust air from the continuous dishwasher 1 12 after the air flow 184 heat was removed, which is in the heat recovery device 172 to the inflowing quite cold fresh water, which flows through the fresh water inlet 164, is discharged so that the fresh water can be heated. Position 180 denotes a suction point at which moisture-laden air is withdrawn into the channel 182. Position 186 denotes a common drain, to which in the embodiment of the continuous dishwasher 1 12 according to FIG. 1, the wastewater flows in both from the pre-scrubber zone tank 138 and the main rinse zone tank 146 as well as the tanks of the final rinse zone 149.

For the sake of completeness, it should be mentioned that the drying zone 168 is likewise separated off from the fresh water rinsing zone 160 by means of a separating curtain 128. Furthermore, the cleaned and dried cleaning product 120 can be removed from an outlet 126 after passing through the individual treatment zones. By reference numeral 178, a control is indicated, with which, for example, the transport device 1 18 can be controlled in terms of their conveying speed. Furthermore, individual program variants or water temperatures can also be set at this.

variants

The illustration according to FIG. 2 shows a device designed according to the invention for cleaning goods, in particular a through-flow dishwasher 1 12.

From FIG. 2, it can be seen that, in one embodiment variant of the continuous dishwashing machine 1 12 proposed according to the invention, here in this embodiment between the pre-evacuation zone 132 and the main scavenging zone 142, there is a special treatment zone 200. The special treatment zone 200 is separated from the pre-scrubbing zone 132 by a separation curtain 128; Furthermore, the special treatment zone 200 is separated by a further separation curtain 128 against the following in the transport direction 130 Hauptpülzone 142. The special treatment zone 200 includes a special treatment zone spray nozzle system 202, a special treatment zone tank 204 and finally a special treatment zone pump 206. In contrast to that shown in FIG Embodiment variant, in which the processes of all tanks in the pre-evacuation zone 132 are accommodated in the main scavenging zones 142 and in the final rinsing zone 149 in a common sewage outflow 186, the special treatment zone 200 illustrated in FIG. 2 has a separate sewage outflow 208.

Furthermore, in the embodiment variant of the through-flow dishwasher 112 proposed according to the invention, a detection device 216 is located within the pre-evacuation zone 132. With the detection device 216, a detection region 218 can be swept over, which is passed by the cleaning material 120. The recognition device 216 is connected to the controller 178 of the continuous dishwasher 1 12 in conjunction, which in turn controls the speed of the transport device 1 18 in addition to various other functions such as temperatures and monitoring functions. The speed with which the transport device 1 18 is operated, is crucial for the respective residence time of the cleaning material in the individual treatment zones of the dishwasher 1 12 and thus for the period of time with which the cleaning material comes into contact with the cleaning liquids.

The product to be cleaned 120 is preferably placed on the intake 122 of the continuous dishwashing machine 1 12 on the formed as a finger ribbon or endless chain transport device 1 18 and then passes through the inlet opening 124 in the cleaning tunnel 1 16 of the continuous dishwashing machine 1 12 a. In the pre-evacuation zone 132, rinsing follows coarse food particles; Furthermore, the entire dirt of the material to be cleaned 120 is soaked by applying cleaning liquid.

The special treatment zone 200 adjoins the pre-evacuation zone 132 when viewed in the transport direction 130. In the at least one special treatment zone 200, a treatment of the cleaning material 120 takes place, which can not be realized in the tank assembly of the continuous-type dishwashing machine 1 12 shown in FIG.

In the at least one special treatment zone 200, a treatment of the cleaning product 120 takes place as soon as the degree of soiling of the cleaning product 120 has been determined by the detection device 216, which may be, for example, a camera or the like. Depending on the detected degree of soiling of the cleaning product 120, the treatment of the cleaning product 120, such as casserole dishes or pans with baked food or protein residues, be activated as needed. If the degree of soiling of the cleaning material 120 to be cleaned is not so great that a special treatment is required within the at least one special treatment zone 200, this is not activated. The solution proposed according to the invention makes it possible to additionally treat particularly dirty items to be cleaned 120, whereby this additional treatment takes place independently of the remaining conventional cleaning process. By integrating the special treatment zone into the assembly unit of the conveyor dishwasher, the continuous operation and associated advantages of the continuous dishwasher 1 can be achieved 12 with their economic benefits.

In the at least one special treatment zone 200, the material to be cleaned can be acted upon, for example, with a special chemical formulation of a cleaning liquid, which is incompatible with the other media, or would adversely affect their effect. Or, for example, it is possible within the special treatment zone 200 to apply an enzymatic cleaner to the cleaning product 120, which would require a neutral adjustment of the cleaning liquid, which is not present in the remaining zones. In addition, it is also possible to treat the cleaning material 120 with alcohol-containing cleaning liquid within the special treatment zone 200. Furthermore, it is possible to treat the items to be cleaned 120 with salt water or to treat the item to be cleaned 120, for example with pellets of ice, or, as will be described in more detail below, to apply cleaning granules to the item to be cleaned 120.

If the at least one special treatment zone 200 illustrated in FIG. 2 is designed, for example, as a granular rinsing zone, the cleaning material 120 is treated with cleaning granules together with a cleaning liquid in the at least one special treatment zone 200. This is applied to the cleaning material 120 via the cleaning system 134 or the special treatment zone spray nozzle system 202 arranged in the special treatment zone 200. The cleaning granules are usually made of plastic material and has a density which is significantly greater than 1, 0 g / cm ³ , for example, 1, 4 g / cm ³ . It is also possible to use even heavy cleaning granules in the at least one special treatment zone 200. The density of the cleaning granules, which is usually made of plastic, for example PP or POM, can by adding mineral aggregates, such as barium sulfate, further increased. The mass of the individual granules of the granules and the resulting increased pulse and the edges of the cleaning granules cause an increased dissolving or erosive effect, for example of baked food residues. Subsequent to the passage of a special treatment zone 200 designed as a granular rinsing zone, the items to be cleaned 120 pass through the further zones of the continuous dishwasher 1 12 in the transport direction 130 which adjoin the special treatment zone 200, for example the main rinsing zone 142 and the final rinse zone 149 adjoining this.

If the special treatment zone 200 is designed, for example, as a granular rinsing zone, then, as will be described in connection with FIG. 3, empty zones 210 and 212 are respectively arranged in front of and behind the special treatment zone. The empty zones 210 and 212, which are arranged in front of and behind the special treatment zone 200 designed as a granulate rinsing zone, on the one hand serve to keep the cleaning granulate in the special treatment zone 200 and to prevent it from being discharged from the special treatment zone 200. If the cleaning granules were dragged into other treatment zones of the continuous dishwasher 1 12, it would be lost in the special treatment zone 200 designed as a granular rinsing zone and would have to be permanently replaced. In addition, there is a risk that granules of the cleaning granules could possibly clog the nozzles of adjacent cleaning zones 127. By providing the empty zones 210 and 212 is also achieved that the soaking effect of the applied cleaning fluid is significantly extended to the cleaning 120.

As can be seen from the illustration according to FIG. 2, the detection device 216, here arranged in the pre-evacuation zone 132, is coupled to the controller 178 of the through-flow dishwasher 1 12. Depending on the detection of the degree of soiling by the recognition device 216, the transport speed of the transport device 118 can be varied via the controller 178 of the continuous dishwasher 1 12 so that, if necessary, heavily soiled cleaning product 120 can be transported correspondingly more slowly through the at least one special treatment zone, for example designed as a granular rinse zone , From the illustration according to FIG. 2, it can be seen that the special treatment zone 200 has a separate drain valve 220, so that the special treatment zone tank 204 is not drained into the common waste water drain 186, but that a separate emptying of the special treatment zone tank 204 via the drain valve 220 into the waste water drain 208 can take place. The illustration according to FIG. 3 shows a special treatment zone, which is followed by an empty zone in front of and an empty zone.

FIG. 3 shows that the special treatment zone 200 illustrated there is separated by the separating curtains 128 against a first empty zone 210 and a second empty zone 212. The illustrated empty zones 210, 212 serve, on the one hand, to keep the cleaning granules in the granular rinsing zone and to avoid carry-over. If the cleaning granules were taken to other zones, it would be lost on the one hand in the Granulatspül zone 200 and would have to be permanently replaced, which in turn has a negative impact on the maintenance and operating costs of the continuous dishwasher 1 12. In addition, there is a possibility that the granules discharged from the special treatment zone 200 may possibly clog the nozzles of adjacent cleaning zones 127. The empty zones 210 and 212 also improve the soaking effect of cleaning liquid on baked-on dirt residues, such as casserole dishes or the like.

In a possible embodiment variant of a special treatment zone 200 which is designed as a granular rinsing zone, it may have, for example, a length of 800 mm. Assuming that the empty zones 210 and 212, respectively, are preceded or followed by the special treatment zone 200 designed as a granular purging zone, have an empty zone length 214 of, for example, 300 mm, a transport speed of 0.8 m / min give an exposure time in the special treatment zone 200, ie in the Granulatspülzone, of 60 seconds. This exposure time can be extended by the fact that if significant contamination is detected by the detection device 216, the speed of the transport device 1 18 can be lowered via the controller 178. If the transport speed of the transport device 1 18 lowered, the exposure time can also be doubled, for example, be extended to 120 seconds. As can be seen from the illustration according to FIG. 3, the special treatment zone 200 designed as a granular rinsing zone comprises its own in this embodiment variant Circulation pump 206 and its own special washer nozzle system 202, 134. Next, the special treatment zone 200 has a special collecting and filtering system to re-introduce the cleaning granules in the liquid circuit. It is initially irrelevant whether the cleaning granules before or after the special rinse pump 206 is added. It is conceivable that the supply of the cleaning granules after the special treatment zone pump 206, has positive effects on the durability of the cleaning granules. This is due to the fact that the cleaning granules do not come into contact with the impeller of the delivery unit 206, ie the special treatment zone pump 206.

Alternatively, it is possible to implement an acid purge zone in the at least one special treatment zone 200. Instead of cleaning granules of plastic or for example pellets of ice, with which the cleaning material 120 can be bombarded in a sense, can be used for cleaning in the at least one special treatment zone 200 on the special treatment zone spray nozzle 202, for example salt water or acid. Since these are self-sufficient, i. decoupled from the further treatment zones 132 and 142, respectively, of the continuous dishwashing machine 1 12, the differential chemical setting of the special treatment zone does not interfere with the action of the cleaning fluids in the adjacent zones, e.g. may be alkaline. Next, the acidic wastewater of special treatment zone 200 according to this embodiment with the waste water of the other alkaline zones, see position 186, mix, so that overall seen a neutralization of the waste water of the inventively proposed continuous dishwasher 1 12 is possible.

By providing a separate drain valve 220 according to FIG. 3, it is possible to exchange or renew the cleaning fluid in the at least one special treatment zone 200, independently of the filling of the remaining treatment zones of the continuous dishwasher.

In the illustrations according to Figures 2 and 3, the transport device 1 18 is formed as an endless continuous conveyor belt or an endless belt member. In one embodiment of the inventively proposed continuous dishwashing machine 1 12, the transport device 1 18 may be formed, for example, also in several parts. Thus, the transport device 1 18, over which the cleaning material 120 is transported in transport device 130, for example, in three parts be educated. The first transport would take over the transport of the cleaning product 120 in the first section, up to the at least one special treatment zone 200 zoom. A further part of the transport device 1 18 carries the cleaning material 120 through the at least one special treatment zone 200. Finally, a third transport of the multi-part transport device 1 18 transported the cleaning 120 through the remaining parts of the cleaning zones 127 into the drying zone 168 and from there into the outlet , compare position 126 according to FIG. 2.

The hydraulic decoupling of the at least one special treatment zone 200, for example from the Vorabräumzone 132, and / or, the at least one special treatment zone 200, downstream zones 142 and 149 allows that no cleaning solution from an upstream treatment zone such as Vorabräumzone 132 or a subsequent treatment zone as For example, the Hauptpülzone 142 enters the at least one special treatment zone 200 and vice versa. An isolation of the at least one special treatment zone is made possible by the fact that the tanks, compare position 138, 146 and position 152, ie the tanks of the rinse zone 149, and the upstream zones 142 and 132 are hydraulically not connected to each other via cascades, but for example via a not shown pump assembly are connected, or are hydraulically separated.

LIST OF REFERENCE NUMBERS

1 10 cleaning device

1 12 Continuous Dishwasher

1 14 housing

1 16 cleaning tunnels

1 18 Transportation instructions

120 items to be cleaned

122 enema

124 inlet opening

126 outlet

127 cleaning zones

128 curtain

130 transport direction

131 rinse zone

132 pre-evacuation zone

134 cleaning system

136 pre-evacuation zone spray nozzle system

138 pre-evacuation zone tank

140 Pre-evacuation zone pump

142 main wash zone

144 Main Purge Zone Spray Nozzle System

146 Main Purge Tank

148 Main Purge Pump

149 final rinse zone

150 pump rinsing zone

152 pump rinse tank 156 pump rinse zone spray nozzle system

158 pump flushing zone pump

160 freshwater rinsing zone

162 Freshwater rinse zone spray nozzle system

164 fresh water intake

166 fresh water boiler / instantaneous water heater

168 drying zone

170 blower for drying

172 heat recovery device

174 Blower for exhaust air

178 control

180 suction point

182 channel

184 exhaust air flow

186 Wastewater drain

200 special treatment zone (granule rinsing zone / acid rinse zone)

202 special treatment zone spray nozzle system

204 special treatment zone tank

206 Special treatment zone pump

208 Wastewater process Special treatment zone

210 1. Empty zone

212 2. Empty zone

214 empty zone length

216 recognition device

218 detection area

220 Drain valve Special treatment zone tank

Claims

claims

1. Device for cleaning of goods, in particular continuous-flow dishwasher (1 12) with a plurality of treatment zones (132, 142, 149, 150, 160, 168, 200) for goods to be cleaned (120), which continuously or intermittently through the treatment zones (132, 142, 149, 150, 160, 168, 200), characterized in that the treatment zones (132, 142, 149, 150, 160) comprise at least one special treatment zone (200) which can be activated depending on the degree of soiling of the cleaning material (120) is.

2. Device for cleaning of good according to claim 1, characterized in that at least one special treatment zone (200) between standard treatment zones, in particular in the transport direction (130) seen behind a Vorabräumzone (132) or behind a cleaning zone (127), in particular before a main purging zone (142) is arranged.

3. Device for cleaning of goods according to one of the preceding claims, characterized in that at least one special treatment zone (200) of the standard provided treatment zones (132, 142, 149, 150, 160) is hydraulically decoupled.

4. Device for cleaning of goods according to the preceding claim, characterized in that the standard provided treatment zones (132, 142, 149, 150, 160) each have tanks (138, 146, 152) are associated with each other, which are interconnected by delivery units.

5. A device for cleaning of goods according to one of the preceding claims, characterized in that it comprises a one or more parts designed transport device (1 18), which is designed in particular as an endless circulating finger band or as a link belt.

6. A device for cleaning of goods according to the preceding claim, characterized in that the transport device (1 18) comprises a first portion which extends to the at least one special treatment zone (200), further a second portion extending through the at least one special treatment zone (200) and having a third portion extending from the at least one special treatment zone (200) to a spout (126).

7. Device for cleaning goods according to one of the preceding claims, characterized in that, viewed in the transport direction (130) of the cleaning material (120), the at least one special treatment zone (200) has a first empty zone (210) in front and a second empty zone ( 212) are connected downstream.

8. A device for cleaning goods according to one of the preceding claims, characterized in that special treatment zone (200) a spray nozzle system (202), a separate tank (204) which can be emptied via a separate drain valve (220) and a separate pump (206 ).

9. Device for the purification of material according to one of the preceding claims, characterized in that the at least one special treatment zone (200) is designed as Granulatspülzone.

10. Device for cleaning of good according to claim 8, characterized in that in the Granulatspülzone (200) cleaning granules together with cleaning liquid on the cleaning material (120) is applied, wherein the cleaning granules is made of plastic and has a density> lg / cm ³ ,

1 1. A device for cleaning of good according to claim 1, characterized in that in the region of an inlet (122) a detection device (216), in particular a camera, for detecting the degree of soiling of the cleaning material (120) and or the type of cleaning material (120 ) is installed.

12. An apparatus for cleaning material according to one of the preceding claims, characterized in that the at least one special treatment zone (200) is an acid rinse zone or a salt water rinse zone.

13. A device for cleaning of property according to any preceding claim, characterized in that wastewater from the acid zone (200) with wastewater from alkaline treatment zones (132, 142) are mixed to neutralize the waste water of the continuous dishwashing machine.

Method for cleaning articles to be cleaned (120) in a device according to one of the preceding claims with the following method steps:

Treatment of the cleaning product (120) in the at least one special treatment zone (200) by applying a cleaning liquid that is incompatible with the applied in the standard treatment zones (132, 142, 149, 150, 160) media or adversely affects their effect and / or

Treatment of the cleaning material (120) in the at least one special treatment zone with alcoholic cleaning liquid and / or treatment of the cleaning material (120) in the at least one special treatment zone (200) with acidic cleaning solution and / or treatment of the cleaning product (120) in the at least one special treatment zone (200 ) with salt water.

Method for cleaning articles to be cleaned (120) according to claim 14, in the following method steps:

Treatment of the cleaning material (120) in the at least one special treatment zone (100) by irradiation of the cleaning material (120) with ice pellets and / or

Treatment of the cleaning material with cleaning granulate together with cleaning fluid.

Method for cleaning articles to be cleaned (120) according to claim 14, characterized in that the degree of soiling of the items to be cleaned (120) is detected by a recognition device (216), wherein the detection device (216) in communication with a controller (178), the special treatment zone activated and / or the transport speed of the transport device (118) in the transport direction (130) varies depending on the degree of contamination of the cleaning material (120).

Method for cleaning items to be cleaned (120) according to claim 14, characterized in that the type of item to be cleaned (120) is detected by means of a recognition device (216), which is provided with a controller (178) in Connecting detection device (216), the special treatment zone activated and / or the transport speed of the transport device (1 18) in the transport direction (130) varies depending on the type of cleaning material (120).