DE102008055817A1 - Dishwasher with improved rinsing effect - Google Patents

Abstract

A through-flow dishwasher (110) for cleaning items to be washed (114) is proposed which has at least one cleaning zone (119) in which the items to be washed (114) are supplied with at least one cleaning liquid. The continuous-type dishwasher (10) furthermore has at least one transport device (112) which is set up to receive the items to be washed (114) in an orientation and to transport them in a transport direction (116) through the cleaning zone (119). The items to be washed (114) have at least one washware surface (156). A surface normal (162) of the washware surface (156) and a gravitation device (154) clamp a washware plane (164). The application of the washware (114) with the cleaning liquid takes place in such a way that the cleaning liquid applied to the washware surface (156) runs off the washware surface (156) in a direction deviating from a parallel orientation to the washware plane (164).

Description

The The invention relates to a continuous dishwashing machine and a method for cleaning items to be washed. Such continuous dishwashers and Processes are used in particular in large kitchens, to larger quantities of items to be washed, such as Plates, cups, trays, cutlery, glasses or the like Wash items to wash. Basically, the proposed dishwasher and the proposed However, also for cleaning other types of items to be washed can be used, for example, from items to be washed, which is not directly or indirectly come into contact with food or drinks. However, a particular focus of the invention is on the field the dishwashing and there especially on the conditioner of even items to be washed, such as plates, trays or boxes with at least one flat surface.

in the Range of commercial kitchens, for example in universities, Hospitals, care facilities, authorities, dining facilities and the like Facilities need dishwashers, which with high throughput items of various ware Such as dishes, cutlery, glasses, Trays, pots, pans, containers or similar clean. Great for fast and reliable cleaning Amounts of items to be washed are in particular continuous dishwashers proven, in which the items to be washed by means of at least a transport device automatically through at least one cleaning zone is moved to this cleaning zone with at least one cleaning fluid to be charged. Such continuous dishwashers, in which the items to be washed by means of the described relative movement through which at least one cleaning zone is moved are, for example in the form of belt transport machines or in the form of basket throughput machines known.

usual Continuous dishwashers have at least one cleaning zone on, but usually several cleaning zones. For example One or more rinse zones can be one or more be followed by several rinse zones, in which or which the dishes with one or more Klarspülflüssigkeiten is rinsed clear. For example, many pass-through dishwashers a Frischwasserklarspülzone, in which the dishes is rinsed with hot fresh water. the heated fresh water can usually rinse aid, for example in the form of surfactants, which are a Relaxation of the fresh water effect and thus the result of Improve rinse. In the further description will be therefore, regardless of the possibility of an addition of rinse aid to fresh water, the terms fresh water, Rinse solution, final rinse liquid or rinse aid therefore used alternatively.

Also Other embodiments of the continuous dishwashers with several cleaning zones are conceivable. So can the Cleaning zones, for example, one or more pre-cleaning zones or pre-scrubber zones, one or more rinse zones for main cleaning, one or more circulating rinse zones for rinsing with recirculating water or other types of rinse solution or other zones.

A technical challenge with such continuous dishwashers is to have an optimal cleaning result with a simultaneous low demand for resources. A special problem consists in an optimization of the consumption of fresh water, which except for filling tanks at startup, too usually during the entire operating period for the fresh water rinse can be used. from Water consumption of the continuous dishwasher is then, as a rule, the need for detergents and energy, for example, electrical energy, in particular for heating the rinse liquids affected.

Of the Fresh water requirement is essential by the execution and quality and / or performance of the flushing systems the continuous dishwasher, such as the Freshwater rinse, influenced. Such flushing systems usually have one or more rinsing arms, which can be configured in particular as a spray arms. For example, a fixed spray tube with nozzles be provided, which is the cleaning liquid, for example the rinsing water, sprayed onto the dishes from above, as well as possibly a corresponding, usually likewise fixed Flushing arm in the form of a spray tube with nozzles, which the cleaning liquid in particular the Nachspülwasser Spray on the dishes from below. The nozzles are usually designed such that they are a fan-shaped Generate beam and are usually arranged such that extends over the length of the rinse arms or spray pipes or over the width of the respective Cleaning zones, in each case a closed curtain of cleaning liquid, For example, a curtain of water results.

Examples of such continuous dishwashing machines, in which such flushing systems are provided are in EP 1 704 809 A2 , in DE 198 05 066 A1 , in US 4,228,813 , in DE 10 2004 003 797 A1 described. Furthermore, embodiments of continuous dishwashers are known in which the transport means one or more laterally Additional vertical spray pipes are provided with nozzles to further improve the rinse effect. An example of such a continuous dishwashing machine is in DE 10 2004 030 003 A1 described.

The Generation of the described curtains of cleaning fluid, especially of water curtains, as well as the transport of the Scraps by means of the transport device through the described Curtains, to ensure optimum cleaning effect. For example, ideally in the final rinse zones all locations of the items to be washed with final rinse liquid, For example, fresh, hot water rinsed off so that, on the one hand, no residue from Wash liquor and on the other hand no dirt on the dishes remain.

Except Constructions of spray pipes with nozzles, the create a uniform fan beam, There are also systems in which a pulsating beam is emitted becomes. Thus, in such systems no unsprayed areas in the cross section of the cleaning zones, in particular in cross section the Frischwasserklarspülzone remain However, comparatively many such nozzles provided be.

Also the sometimes expensive spray nozzle designs solve known continuous dishwashers However, the problem described above as possible optimal cleaning effect with low consumption of resources only to a limited extent. As before, for example to achieve a sufficient rinse result Use of significant amounts of heated fresh water required. The known systems have with respect to their fresh water needs reached a limit, provided that a good rinse results can not be fallen below.

It It is therefore an object of the present invention to provide a continuous dishwashing machine and to provide a method for cleaning items to be washed, which are the disadvantages of known continuous dishwashers and avoid procedures. In particular, the continuous dishwashing machine should and the procedure be set up for optimum cleaning effect with at the same time low need for cleaning liquid, especially fresh water.

These Task is solved by a continuous dishwasher and a method for cleaning items to be washed with the features the independent claims. Advantageous developments of Invention, which realized individually or in any combination can be, are shown in the subclaims. In this case, the method can be used in particular by using a Continuous dishwashing machine are carried out so that with respect to possible embodiments of the inventive method to possible Embodiments of the continuous dishwasher referenced can be and vice versa.

The Continuous dishwashing machine is used to clean dishes. Under a continuous dishwasher is doing general a device understood which at least one cleaning zone in which the items to be washed with at least one cleaning liquid can be acted upon and which further at least one transport device having, which is adapted to the dishes by to transport the cleaning zone, preferably automatically. For example, with regard to possible embodiments the continuous dishwasher to the above description of the prior art, for example, the there described Durchlaufgeschirrspülmaschinen be modified according to the invention can. Another embodiment is basically possible.

The Continuous dishwasher has one or more cleaning zones on. Under a cleaning zone, regardless of the actual use within the pass-through dishwasher, one zone understood, which is set up with the dishes to apply the at least one cleaning liquid. In the following it is especially assumed that these are at least designed a cleaning zone as Frischwasserklarspülzone is. However, another embodiment is possible, For example, an embodiment in which the at least one Cleaning zone a Vorabräumzone, a rinsing zone for Main cleaning, a circulating rinse zone or other Types of cleaning zones comprises or as such a cleaning zone is designed. Are several cleaning zones within the continuous dishwasher provided, so may one, several or all of these cleaning zones be designed according to the invention, whereas possibly remaining cleaning zones be configured conventionally can.

The Cleaning liquid may in particular comprise water. The water may be admixed with additives, For example, disinfectants and / or detergents and / or rinse aid. Various Embodiments are possible. As shown above However, it is particularly preferred if the at least one cleaning liquid includes pure fresh water and / or fresh water, which accordingly the above description at least one rinse aid, for example in the form of one or more surfactants is.

The Continuous dishwasher has a transport device on, by means of which the items to be washed received in an orientation can be. As shown above, this transport device for example, comprise a conveyor belt. Other configurations However, they are basically possible, for example an embodiment in which the transport device one or includes several rumps, a link chain, gears or the like. By means of this transport device is a relative transport between wash ware and cleaning zone allows be, so that a relative movement of the dishes through the cleaning zone can take place. Preferably, this transport is done automatically for example by means of a corresponding drive device.

Independently from the use of the term "continuous dishwashing machine" the dishes are basically a variety include types of items to be washed, such as the above mentioned types of items to be washed. The following is the invention essentially described with reference to dishes in the form of dishes, ie objects, which directly or indirectly with food or drink in contact such as plates, cups, glasses, trays, Cutlery, bowls, bowls, pots, pans or the like. Also However, other embodiments are possible in principle For example, the use of items from other areas the cleaning technology, for example, from the field of medical and Elderly.

The most items have at least one Spülgutoberfläche on. Often this washware surface at least partially configured substantially flat. All in all it is preferred if the items to be washed substantially as flat, flat ware is designed, as in this Case the advantages of the invention described below particularly favorable to make noticable. Accordingly, it is preferred if the items to be washed For example, plates and / or trays includes. Alternatively or In addition, however, the dishes can also, for example Have container, in particular container with essentially flat surfaces, in particular, for example Boxes, for example, metal boxes or plastic boxes.

The The invention is based essentially on the recognition that rinsing systems in the known state of the art essentially at right angles to the transport direction which are also referred to as "transverse" to the following Continuous dishwasher is called. Farther are spray tubes in those known from the prior art Systems substantially horizontally above or below the transport device installed in the rinse zone. At the same time it is in the Usually common, the dishes, such as plates or trays, with their major extent substantially perpendicular to the transport direction into the receptacle of the transport device, for example, a conveyor belt to use.

The The present invention is based on the finding that a deviation from this usual orientation to a reduced one Consumption of cleaning fluid, especially fresh water, at simultaneously improved cleaning result, for example rinse aid result, can lead.

The Spülgutoberfläche has a surface normal on. This surface normal spans with the gravitational direction a level, which hereinafter referred to as Spülgutebene becomes. Under the direction of gravity, the direction is called, in which during operation of the continuous dishwasher gravity on the components of the continuous dishwashing machine, the items to be washed and the cleaning liquid act. According to the invention, the application is proposed of the items to be washed with the cleaning liquid in such a way To design that on the Spülgutoberfläche applied cleaning liquid in one of a parallel Orientation to Spülgutebene different direction the Spülgutoberfläche expires. This means the sprayed liquid does not run along the natural fall lines at the surface of the cleaning, but learns in addition a distraction to the side.

in the Unlike conventional dishwashers, in which a drainage of the cleaning liquid in the Always always vertically downwards, ie parallel to the dish level, can be done by this deviation from the parallelism Achieve a greatly improved run-off effect. This improved Flushing effect is due to various effects. An effect is due to the fact that the applied cleaning liquid at oblique drain a larger area sweeping over the washware surface, so overall with a lower need for cleaning fluid cleaned a larger surface of Spülgutoberfläche can be. Another effect may be that the cleaning fluid on the washware surface liquid fronts forms, which, in contrast to simply running downwards cleaning liquid speed, can have a larger alluvium effect, and thereby dirt particles or adhering cleaning fluid from previous cleaning zones can better cleanse. Accordingly, the invention makes particularly advantageous, if the cleaning zone comprises a rinse zone in which the Washware with a rinse liquid is applied, in particular fresh water and / or a fresh water-containing Rinse liquid.

Of the above-described effect of obliquely draining the cleaning liquid in one of a parallel orientation to Spülgutebene deviating direction on the Spülgutoberfläche can be technically realized in various ways, which can also be used in combination. These embodiments The invention may in particular be based on known Elements of continuous dishwashers in one of a right angle deviating orientation and / or in one of a parallel orientation deviating orientation to each other to arrange.

So can in a first embodiment of the invention, the Inclination on an inclination of a Spülvorhangs relative to the transport device based. Accordingly, the purification zone may be, for example, at least a rinsing arm with a plurality of rinsing nozzles exhibit. Under a flushing arm is generally a device to understand which the majority of rinse nozzles oriented to one another so that they are essentially along one Longitudinal direction are arranged. Also a light one Deviation from this direction of longitudinal extension, however, is fundamental possible, for example, an embodiment of the flushing arm in which the rinsing nozzles in a zig-zag orientation are arranged, in which case the longitudinal direction for example, the average orientation of the rinsing nozzles can be specified. Overall, the rinsing nozzles however, be configured to have at least one rinse curtain as opposed to, for example, an arrangement with individual rinsing nozzles. Under a rinse curtain should preferably have a cross section of the cleaning zone, at least in the area of the dishes, essentially closed Surface to be understood at cleaning liquid. In this case, the spray direction of the flushing nozzles emerging amounts of cleaning fluid arbitrarily oriented be, for example, down, to the side or to the top. Various Embodiments will be described below.

Of the Rinse arm is intended to be a longitudinal direction have, which together with the direction of gravity a Spülvorhangbene spans. In other words, the Spülvorhangebene the plane in which the flushing curtain described above lies.

According to the invention in the first embodiment, this Spülvorhangbene in one Orientation to the transport direction to be configured, which of deviates from a vertical orientation. In other words, you can the transport direction and the direction of gravity a machine plane span, wherein the Spülvorhangebene the machine level at a curtain angle other than 90 °.

By this oblique orientation of the Spülvorhangs the Cleaning fluid, in particular a freshwater curtain, can be achieved on the surface of the ware form obliquely extending liquid fronts of the cleaning liquid. Since the already existing on the Spülgutoberfläche Cleaning liquid the drain direction of below Impacted by cleaning fluid, can by this oblique orientation of the Spülvorhangs relative to the transport direction or perpendicular to the transport direction the above-described oblique flushing effect can be achieved in which the cleaning liquid not only along a vertical fall line on the surface of the dishes expires, but also with a movement share the Spülgutoberfläche moved to the side.

Of the The curtain angle shown above represents the angle, below the rinse curtain plane intersects the machine plane. The rinse curtain level becomes general as set forth above through the longitudinal direction and the direction of gravity clamped. In principle, however, it is also possible that the longitudinal direction is parallel to the direction of gravity is aligned. In this case, in the broader sense of the word, below the Spülvorhangbene generally the level of the Spülvorhangs to understand, so the level of the above-described film of the cleaning liquid.

With increasing deviation of the curtain angle of 90 ° takes at the same time the number of rinsing nozzles too, which is necessary to the cross section of the continuous dishwashers in the area of the cleaning zone, usually a tunnel cross-section a rinsing tunnel. With this increasing number of rinsing nozzles At the same time, however, the need for cleaning fluid decreases again to. In this respect, it is particularly preferred if the curtain angle has a deviation of 90 °, which is between 1 ° and 40 °, preferably between 5 ° and 20 ° and especially preferred at 10 °. There are deviations from 90 ° upwards and downwards possible. In the said angle ranges outweighs the above-described improved effluent effect over the adverse Effect of increasing the required number of rinsing nozzles.

In general, the at least one rinsing curtain can impinge on the items to be washed from above and / or from below. For example, the at least one washware surface may have an upwardly facing, in particular obliquely upwardly pointing, upper side surface. Alternatively or additionally, however, the washware surface can also be at least have a back surface, with a back normal, which has a direction component parallel to the direction of gravity, ie downwards. Accordingly, the at least one rinsing arm and / or its rinsing nozzles, alternatively or in addition to a spraying direction downward, can spray into other spraying directions and in this way produce rinsing curtains. Thus, the at least one rinsing arm can be, for example, a lower rinsing arm and / or comprise such a lower rinsing arm, the lower rinsing arm being arranged to apply the cleaning liquid in an upward direction to the dishes, ie in a spraying direction opposite to the direction of gravity or with a directional component against the gravitational direction. For example, at least one upper spray arm for spraying in a downward direction and at least one lower spray arm for spraying in an upward direction may be provided. During this upward spraying onto an at least partially downwardly pointing rear side surface, the above-described effect of an oblique running direction is particularly advantageous. In this case, namely, the gravitational force acts directly opposite to the direction of movement of the liquid particles. In a normal orientation of the Spülgutebene, as known from the prior art, the flow direction would therefore directed the spray direction opposite, which particularly difficult even flushing the back surface. If, by contrast, according to the invention, the flow direction is selected such that a non-parallel flow direction occurs by a suitable choice of angles, this effect of a liquid barrier on the back surface is at least largely avoided, and a more uniform cleaning takes place, even with less use of cleaning liquid.

alternative or in addition to the embodiment described above, in which the scavenging curtain obliquely, d. H. in a chosen from the perpendicular to the machine plane deviating orientation the effect described above can be an oblique Expiration can also be generated in other ways. So the transport device For example, have at least one receptacle in which the Wash ware can be recorded. The transport direction and the gravitational direction can be a machine plane span, wherein the recording is set up so that the Spülgutebene and the machine level in the recording recorded items under a deviating from 0 ° Rinse angle are arranged to each other. In this embodiment The invention thus takes place a spraying of Spülgutoberfläche directly with a component laterally to Spülgutebene, so that the above-described effect of obliquely running directly effected on the Spülgutoberfläche becomes. Again, it is preferred, the Abspülwinkel in a range between 1 ° and 40 °, preferably between 5 ° and 20 ° and especially preferably at about 10 °.

These Recording of the dishes obliquely to the transport direction can done in different ways. For example, the Transport device or recording a conveyor belt with at least have a receiving compartment. In this case, the continuous dishwasher so designed, for example, as a belt conveyor dishwasher be. Alternatively or additionally, the recording or the transport device also one or more baskets having at least one receiving compartment, wherein the receiving compartments in both cases are set up so that the above described angle condition for the Abspülwinkel can be fulfilled.

As shown above, in addition to the described continuous dishwasher in one or more of the described embodiments furthermore proposed a method for cleaning items to be washed, in particular, using a continuous dishwashing machine according to one or more of those described above Embodiments. In this case, the items to be washed by at least one transport device received in an orientation and in a transport direction through at least one cleaning zone transported. The ware is doing with at least one Cleaning fluid applied. Again, that shows Washware at least one washware surface on, wherein a surface normal of Spülgutoberfläche and a gravitational direction span a dish level. The Loading the items to be washed with the cleaning liquid takes place in such a way that on the Spülgutoberfläche applied cleaning liquid in one of a parallel Orientation to Spülgutebene different direction the Spülgutoberfläche expires. For Further advantages and possible embodiments of the invention Method can be largely referenced to the above description become.

The proposed continuous dishwashing machine and the proposed Have procedures over conventional continuous dishwashers and conventional methods have a variety of advantages on. In particular, as well as corresponding experiments have shown by means of the proposed oblique rinse a smoother and more reliable Cleaning the items to be cleaned. simultaneously can the need for cleaning fluid significantly reduce, without the rinsing result, for example the final rinse result.

Structurally, the proposed invention can be easily implemented. For example, you can set up the flushing systems for the freshwater rinse so that the freshwater rinse curtain or the water film in the freshwater rinse forms at an angle deviating from the perpendicularity to the transport direction. For this purpose, for example, at least one rinsing arm, for example a spray pipe, can be provided above and below the transport device of the continuous dishwasher, each having a plurality of rinsing nozzles. These rinsing nozzles can each produce a fan-shaped jet, which is aligned along the rinsing arm or spray tube. The rinsing arms can not be arranged at right angles to the transport direction, but for example at an angle of 70 ° or 110 °, preferably 80 ° or 100 °, to the transport direction in the fresh water rinsing zone. The rinsing nozzles along the rinsing arms can then produce with their fan-shaped beams the desired water curtain, which is oriented obliquely to the transport direction. Such an embodiment of the invention is technically easy to implement.

Also the second possibility for generation described above of the improved rinse effect can be achieved, for example be implemented, that the dishes, such as the Plates and / or trays, with its dishwashing surface, For example, the main expansion plane (for example, the plate surface and / or the tray surface) not perpendicular to Transport direction, but obliquely to this in the recording, For example, the conveyor belt and / or the dish rack used becomes. At the same time in this embodiment, the rinsing arms or the curtain of the cleaning liquid, in particular in freshwater rinsing in the classical arrangement are left perpendicular to the transport direction. Also a skew in the sense of the above description, however, is basic realizable.

With both described embodiments can be achieved that on the Spülgutoberfläche, for example the plate and / or trays when passing through the curtain of cleaning liquid, for example, the fresh water curtain, especially in the fresh water rinse, not just a vertical component in the water flow but also a component with the cleaning fluid flows on the Spülgutoberflächen to the side. This effect is formed at the point where the Spülgutoberfläche of the items to be washed through the curtain of the cleaning liquid drives, thickening in the layer of cleaning fluid, which may take the form of a wave, for example. These thickenings can improve the rinsing effect be generated.

Also during spraying or rinsing from below Both alternatives described above can be advantageously implemented. The locations of the items to be washed, which are from the nozzles, sprayed for example by means of the lower rinsing arm are, for example, a lower Nachspülarmes are usually the backs of plates and / or trays. Here is the above shown, additional advantageous Effect. In the conventional arrangement according to the prior art the curtain of cleaning liquid comes out of the flushing nozzles, For example, the water curtain from the rinse nozzles, over the entire width of the dishes at the same time on the sloping rearwardly inclined back surfaces of the Wash items. In this constellation, the film of cleaning fluid, For example, the water film from the bottom of the back surfaces meets, by the already flowing from above Cleaning fluid, for example water and / or rinse solution, dammed. The rinsing effect on the backs of the dishes is hampered. However, according to the invention, however the film of the cleaning liquid, in particular the water film the rinsing systems, and the back surfaces the dishes are arranged obliquely to each other, according to one or both of the embodiments described above, this may cause a lateral component in the flow the cleaning liquid on the back surfaces of the Set items to be washed, through which the rinsing effect can be significantly improved.

All in all can be thus, with the same achievable and desired Rinsing action as in prior art arrangements, the amount of fresh water, especially in a rinse significantly to reduce. Alternatively or additionally can be However, the inventive design also in other cleaning zones and / or using other species Use of cleaning liquids advantageous.

EXAMPLES

Further Details and features of the invention will become apparent from the following Description of preferred embodiments, in particular in conjunction with the subclaims. Here you can the respective features alone or in several be realized in combination with each other. The invention is not limited to the embodiments. The embodiments are schematic in the figures shown. Identical reference numbers in the individual figures designate the same or functionally identical or with regard to their functions corresponding elements.

in the Individual shows:

1 a pass-through dishwasher according to the prior art;

2.1 an arrangement of dishes in the conveyor dishwasher according to 1 in side view;

2.2 the arrangement according to 2.1 in plan view;

3.1 a side view of an arrangement of crockery in a first embodiment of a continuous dishwashing machine according to the invention;

3.2 the arrangement according to 3.1 in plan view; and

4 one too 3.2 Analogous representation of a second arrangement of dishes according to the invention in a continuous dishwashing machine.

In 1 is in a sectional view from the side of a prior art continuous dishwashing machine 110 shown. Such a continuous dishwashing machine 110 can for example be modified according to the invention. For a possible construction and a possible mode of operation of this continuous dishwashing machine 110 For example, it can be largely based on the DE 10 2004 003 797 A1 to get expelled.

In the pass-through dishwasher 110 passes through items to be washed 114 in a transport direction 116 a cleaning chamber 118 , The transport of the dishes 114 takes place in the illustrated continuous dishwasher 110 by means of a transport device 112 which, for example, a conveyor belt 120 may include. The pass-through dishwasher 110 can thus be configured for example as a belt conveyor dishwasher. However, other embodiments are possible in principle.

At an enema 122 runs on the top of the conveyor belt 120 recorded dishes 114 in an inlet tunnel 124 one. The inlet tunnel 124 is by means of a separation curtain 126 shielded to the outside to prevent the escape of steam in the area of the inlet tunnel 124 to prevent or at least reduce.

After that at the top of the conveyor belt 120 recorded dishes 114 the inlet tunnel 124 has happened, it enters the cleaning chamber 118 one, which in several cleaning zones 119 is divided. First, the dishes 114 in a first cleaning zone 119 in the form of a pre-rinse zone 128 transported. Within this pre-rinse zone 128 is a pre-rinse system 130 arranged. The pre-rinsing system 130 has spray pipes 131 on, which at the bottom and / or above the circulating conveyor belt 120 are arranged. About one in 1 not shown pump is the pre-rinse system 130 treated with cleaning liquid.

The pre-rinse zone 128 is about another curtain 126 from a subsequent cleaning zone 119 in the form of a rinsing zone 132 separated. After passage of the pre-rinse zone 128 the dishes are running 114 in the rinsing zone 132 one. The rinsing zone 132 includes a flushing system 134 , which also again above and below the top of the circulating conveyor belt 120 arranged spray pipes 131 having.

The rinsing zone 132 is through another curtain 126 from a subsequent cleaning zone 119 in the form of a pump rinsing zone 136 separated. This also has a flushing system in the form of two opposing spray pipes 131 on. To the pump rinsing zone 136 closes another cleaning zone 119 in the form of a fresh water rinsing zone 138 at. The fresh water rinsing zone in turn comprises spray pipes 140 above and below the conveyor belt 120 , Within the freshwater rinsing zone 138 becomes the washware 114 rinsed with fresh water to residual impurities and / or previously applied cleaning liquid from this ware 114 to remove before the dishes 114 in a subsequent drying zone 142 is transported.

The freshwater rinsing zone 138 downstream there is another curtain 126 which the fresh water rinsing zone 138 from the drying zone 142 separates. Within the drying zone 142 which is a take-off route 144 is a drying fan 146 added. The drying fan sucks in air and heats it. The in the drying fan 146 warmed air enters an outlet funnel 148 a, at the lower end of which is an outlet nozzle, which the exiting drying air to the drying zone 142 passing dishes 114 directs. In transport direction 116 of the dishes 114 considered is the drying zone 142 over another separation curtain 126 against the acceptance route 144 shielded. At the acceptance route 144 can clean, rinsed and dried dishes 114 For example, plates, trays or the like, are removed for further use.

The invention relates essentially to the manner and the orientation under which the cleaning liquid to the items to be washed 114 is applied. In particular, the invention preferably relates to the fresh water rinsing zone 138 , In the 2.1 and 2.2 is therefore in a side view ( 2.1 ) or in plan view ( 2.2 ) the orientation of the dishes 114 represented according to the prior art. In each case, a section of the Frischwasserklarspülzone 138 the pass-through dishwasher 110 according to 1 shown. Shown is schematically the position of the dishes 114 , which is symbolized by plates in the example according to the figures. Shown is the position of this dishes 114 on the transport device 112 as well as the orientation of the spray pipes 140 for the fresh water rinse according to the prior art.

In 2.1 In this case, the situation is shown in side view, wherein it can be seen that the dishes 114 on the conveyor belt 120 in recordings 149 in the form of subjects 150 is used. The spray pipes 140 are each above and below the conveyor belt 120 arranged. In 2.2 the plan view of this situation according to the prior art is shown.

Within the arrangement according to the 2.1 and 2.2 Different levels can be defined. These levels result from a combination of the different directions of this illustrated arrangement. So is in 2.1 the gravitational direction with the reference number 154 designated. Furthermore, the dishes 114 Spülgutoberflächen 156 on, namely a front surface 158 , which in the illustrated arrangement in the recordings 149 obliquely upwards, and a back surface 160 , which points obliquely downwards. With the reference number 162 is a surface normal to these washware surfaces 156 designated. These surface normals 162 and the gravitational direction 154 clamp together a Spülgutebene 164 on, which in the plan view according to 2.2 is indicated as a dashed line and which in the illustration according to 2.1 corresponds to the drawing plane or is arranged parallel to this plane of the drawing.

The spray tube 140 the fresh water rinsing zone 138 points as in 2.2 is recognizable, rinsing arms 166 on, which is in a longitudinal direction 168 extend. Also this longitudinal direction 168 is in 2.2 indicated in the form of a dashed line. Through the longitudinal direction 168 and gravitational direction 154 can define another level, which is referred to as Spülvorhangbene and which in 2.2 with the reference number 170 is designated. This Spülvorhangbene extends into 2.2 parallel to the longitudinal direction 168 and perpendicular to the sign level. Also in 2.1 this Spülvorhangbene extends 170 perpendicular to the drawing plane.

Based on the representations of the levels 164 and 170 in the 2.1 and 2.2 It can be seen that in known devices the Spülgutebene 164 essentially parallel to the transport direction 116 and substantially perpendicular to the Spülvorhangebene 170 is oriented. The flushing curtain level 170 however, is usually perpendicular to the transport direction 116 oriented. The spray pipes 140 the fresh water rinsing zone 138 So they are usually parallel to the subjects 150 of the conveyor belt 120 and at right angles to the transport direction 116 oriented. The rinsing arms 166 along their longitudinal direction 168 rinsing nozzles 172 from which cleaning fluid (in the case of freshwater rinsing zone 138 usually heated fresh water, possibly with the addition of rinse aid) exits or is ejected. This cleaning liquid forms a curtain, which in the 2.1 and 2.2 as a curtain of water 152 is designated. Due to gravity, this water curtain 152 oriented substantially vertically, that is perpendicular to the plane in 2.2 , If an oblique spraying out of the rinsing nozzles 172 so this water curtain 152 also assume a slightly curved shape viewed from the side.

Like from the 2.1 and 2.2 shows, the water curtain forms 152 the fresh water rinse so essentially in a straight line, parallel to the spray pipes 140 and thus at right angles to the transport direction 116 out. The drainage of the cleaning liquid on the washware surfaces 156 always takes place in one direction within the direction of gravity 154 and the surface normals 162 clamped Spülgutebene 164 ,

The opposite show the 3.1 and 3.2 a first embodiment of a continuous dishwasher according to the invention 110 , in one of the 2.1 and 2.2 analog representation. Incidentally, the continuous dishwashing machine 110 for example, according to the embodiment according to 1 be designed. Again, in the 3.1 and 3.2 only schematically the position of the dishes 114 , in the example turn plate, on the transport device 112 as well as the orientation of the rinse arms 166 in the fresh water rinsing zone 138 shown. 3.1 again shows the situation in side view, with in the subjects 150 inserted ware 114 , In the illustrated embodiment, in each case above and below the conveyor belt 120 lances 140 with rinse arms 166 arranged. In principle, an embodiment with a larger or smaller number of washing arms 166 possible, for example, only an arrangement with washing arms 166 above the conveyor belt 120 , In 3.2 the plan view of this situation is shown.

The transport direction 116 and the gravitati onsrichtung 154 span in the illustrated arrangement on another level, which as a machine level 174 is designated. This machine level 174 is in 3.1 the drawing plane or parallel to the drawing plane, whereas the machine plane 174 in 3.2 is shown as a dashed line.

As in particular from 3.2 is recognizable, is the Spülvorhangbene 170 in the orientation according to the invention according to the first embodiment of the invention no longer perpendicular to the transport direction 116 or to the machine level 174 arranged. A normal to the flushing curtain level 170 is in 3.2 with the reference number 176 designated. It can be seen that in the embodiment according to the invention, a deviation between these normals and the transport direction 116 which exists in 3.2 denoted by δ. This angular deviation δ is preferably in the range between 1 ° and 40 °, for example between 5 ° and 20 ° and particularly preferably at about 10 °. The rinsing arms 166 for the fresh water rinse are therefore at an angle to the transport direction 116 arranged, which deviates from a right angle.

Furthermore, it can be seen that in turn forms a curtain of cleaning fluid, in this case, a curtain of water 152 , which may be substantially planar, which, due to a non-vertical arrangement of the rinsing nozzles 142 , but also slightly curved. This water curtain 152 is also no longer perpendicular to the Spülgutebene 164 arranged so that the surface normal 162 of the dishes 114 this water curtain 152 no longer perpendicular, but in a deviation from the vertical by the angle δ. By this arrangement, the above-described lateral relative movement of the water front or the front of the cleaning liquid on the Spülgutoberflächen 156 and thus causes the improved rinsing effect.

In 4 is a second embodiment of a continuous dishwashing machine according to the invention 110 in one too 2.2 and to 3.2 shown analog representation. The embodiment described there can also with the in the 3.1 and 3.2 described embodiment variant can be combined. Again, a fresh water rinse zone 138 the pass-through dishwashers 110 shown, from which schematically the position of the dishes 114 in the example shown turn plate on the transport device 112 as well as the orientation of the spray pipes 140 and the rinse arms 166 for the fresh water rinsing zone 138 evident. Again, analogous to the embodiment according to the 3.1 and 3.2 , Rinse arms 166 above and / or below the conveyor belt 120 be arranged.

Again, it can be, analogous to the embodiment according to the 3.1 and 3.2 to define different levels which in 4 with the reference numbers 164 (Spülgutebene) 170 (Spülvorhangebene) and 174 (Machine level) are designated. In contrast to the embodiment according to the 3.1 and 3.2 is in the in 4 embodiment shown, the Spülvorhangebene 170 essentially perpendicular to the transport direction 116 and to the machine level 174 oriented. The normals 176 to Spülvorhangebene 170 is thus essentially parallel to the transport direction 116 and to the machine level 174 , However, as shown above, it is also possible to form combinations of the embodiments in which a deviation δ 0 between these directions exists.

In the in 4 illustrated embodiment, however, is the Spülgutebene 164 by an angle γ of the machine plane 174 tilted. Also, this angle γ is preferably between 1 ° and 40 °, in particular between 5 ° and 20 ° and particularly preferably at about 10 °. The subjects 150 for the dishes 114 can accordingly on the conveyor belt 120 be set up so that the items to be cleaned obliquely on the conveyor belt 120 can be placed and held in such a way. This will drive the Spülgutoberflächen 156 tilted by the water curtains 152 the rinse arms 166 therethrough. Due to this inclination of the dishes 114 also results in the above-described lateral relative movement of the water front on the Spülgutoberflächen 156 of the dishes 114 , and thus the improved rinsing effect.

110

Conveyor-type dishwasher

112

transport device

114

ware

116

transport direction

118

cleaning chamber

119

cleaning zones

120

conveyor belt

122

enema

124

entry tunnel

126

curtain

128

pre-wash zone

130

prewash

131

lances

132

rinse zone

134

flushing system

136

pump-action

138

clean-water

140

lance Fresh-water rinsing

142

drying zone

144

removal section

146

drying fan

148

outlet funnel

149

Recordings

150

subject for items to be cleaned on conveyor belt

152

water curtain the freshwater rinse

154

gravity direction

156

Spülgutoberfläche

158

Front surface

160

Back surface

162

surface normal

164

Spülgutebene

166

wash arms

168

Longitudinal extension

170

Spülvorhangebene

172

rinsing nozzles

174

machine level

176

normal to Spülvorhangebene

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 1704809 A2 [0007]
• - DE 19805066 A1 [0007]
• - US 4228813 [0007]
• DE 102004003797 A1 [0007, 0048]
• - DE 102004030003 A1 [0007]

Claims (11)

Continuous Dishwasher ( 110 ) for cleaning items ( 114 ), wherein the continuous dishwasher ( 110 ) at least one cleaning zone ( 119 ), in which the items to be washed ( 114 ) is acted upon with at least one cleaning liquid, wherein the continuous dishwashing machine ( 110 ) at least one transport device ( 112 ), wherein the transport device ( 112 ) is set up to wash the dishes ( 114 ) in an orientation and in a transport direction ( 116 ) through the purification zone ( 119 ), whereby the items to be washed ( 114 ) at least one washware surface ( 156 ), wherein a surface normal ( 162 ) of the washware surface ( 156 ) and a gravitational direction ( 154 ) a Spülgutebene ( 164 ), whereby the loading of the items to be washed ( 114 ) is carried out with the cleaning liquid such that on the Spülgutoberfläche ( 156 ) applied cleaning liquid in one of a parallel orientation to Spülgutebene ( 164 ) deviating direction on the Spülgutoberfläche ( 156 ) expires. Continuous Dishwasher ( 110 ) according to the preceding claim, wherein the ware ( 114 ) has at least one of the following items to be washed: plate; trays; Containers, in particular boxes. Continuous Dishwasher ( 110 ) according to any one of the preceding claims, wherein the purification zone ( 119 ) a rinse zone ( 136 . 138 ), in which the items to be washed ( 114 ) is treated with a rinse liquid, in particular fresh water. Continuous Dishwasher ( 110 ) according to any one of the preceding claims, wherein in the purification zone ( 119 ) at least one rinse arm ( 166 ) with a plurality of rinsing nozzles ( 172 ), wherein the rinsing arm ( 166 ) a longitudinal direction ( 168 ), wherein the longitudinal direction ( 168 ) and the gravitational direction ( 154 ) a rinse curtain level ( 170 ), the transport direction ( 116 ) and the gravitational direction ( 154 ) a machine level ( 174 ), wherein the rinsing curtain level ( 170 ) the machine level ( 174 ) under a curtain angle other than 90 °. Continuous Dishwasher ( 110 ) according to the preceding claim, wherein the curtain angle has a deviation (δ) of 90 °, which is between 1 ° and 40 °, preferably between 5 ° and 20 ° and particularly preferably at 10 °. Continuous Dishwasher ( 110 ) according to one of the preceding claims, wherein the at least one washware surface ( 156 ) at least one backside surface ( 160 ), wherein the back surface ( 160 ) has a back normal, the back normal having a direction component parallel to the gravitational direction ( 154 ) having. Continuous Dishwasher ( 110 ) according to the preceding claim, wherein in the purification zone ( 119 ) at least one rinse arm ( 166 ) with a plurality of rinsing nozzles ( 172 ), wherein the rinsing arm ( 166 ) is a lower arm, wherein the lower arm ( 166 ) is arranged to the cleaning liquid in an upward direction on the dishes ( 114 ). Continuous Dishwasher ( 110 ) according to one of the preceding claims, wherein the transport device ( 112 ) at least one recording ( 149 ), wherein the transport direction ( 116 ) and the gravitational direction ( 154 ) a machine level ( 174 ), whereby the recording ( 149 ) is arranged such that the Spülgutebene ( 164 ) and the machine level ( 174 ) are arranged at a deviating from 0 ° Abspülwinkel (γ) to each other. Continuous Dishwasher ( 110 ) according to the preceding claim, wherein the Abspülwinkel (γ) is between 1 ° and 40 °, preferably between 5 ° and 20 ° and particularly preferably at 10 °. Continuous Dishwasher ( 110 ) according to one of the two preceding claims, wherein the receptacle ( 149 ) a conveyor belt ( 120 ) with at least one receiving compartment ( 150 ) and / or a dish rack with at least one receiving compartment ( 150 ) having. Method for cleaning items to be washed ( 114 ), in particular using a continuous dishwashing machine ( 110 ) according to one of the preceding claims, wherein the items to be washed ( 114 ) by means of at least one transport device ( 112 ) are received in an orientation and in a transport direction ( 116 ) through at least one purification zone ( 119 ), whereby the items to be washed ( 114 ) is applied with at least one cleaning liquid, wherein the items to be washed ( 114 ) at least one washware surface ( 156 ), wherein a surface normal ( 162 ) of the washware surface ( 156 ) and a gravitational direction ( 154 ) a Spülgutebene ( 164 ), whereby the loading of the items to be washed ( 114 ) is carried out with the cleaning liquid such that on the Spülgutoberfläche ( 156 ) applied cleaning liquid in one of a parallel orientation to Spülgutebene ( 164 ) deviating direction on the Spülgutoberfläche ( 156 ) expires.