DE102007004599A1 - Dishwasher i.e. hood dishwasher, for cleaning e.g. trays, in e.g. hotel, has condensate precipitation device with blower for extraction of steam and/or air from closed rinsing chamber and with condensing surface for condensing steam - Google Patents

Abstract

The dishwasher (110) has a lower frame (112), and a rinsing chamber (120) with a hood (118) partially covering the rinsing chamber. A condensate precipitation device (124) is connected with the rinsing chamber in the closed hood. The condensate precipitation device has a blower (142) for extraction of steam and/or air from the closed rinsing chamber. The condensate precipitation device has a condensing surface (140) for condensing the steam. The condensate precipitation device is held entirely or partially in a rear wall and/or a frame connecting the lower frame and the hood.

Description

Field of the invention

The The invention relates to a hood dishwasher with a Kondensatniederschlagseinrichtung to reduce from the dishwasher emerging steam wheels. such Dishwashers are for commercial Use set up and are used, for example, in commercial kitchens used to crockery, glasses, cutlery, trays or the like To clean articles.

State of the art

Next Belt transport and basket transport dishwashers come in commercial kitchens, especially in commercial kitchens hotels, restaurants, factory canteens, hospitals, Authorities, schools or similar institutions, Also known as hood dishwashers for use. Such dishwashers have a base and a rinsing chamber, which is equipped with a rinsing or spray system (for example one or more spray arms) is equipped for cleaning the dishes. Characteristic of Such dishwashers is a washing chamber enclosing hood, which opens to the rinsing chamber for example, unfolded or (for example by means of a rail system) can be ascended to the top. In the washing chamber are usually used with baskets equipped with dishes to be cleaned. Then the hood is closed, and the rinse is carried out. After flushing is the hood is open, and the baskets with cleaned dishes are removed.

A Problem of such hood dishwashers exists however, in that when opening the hood of the dishwasher significant amounts of steam in the form of steam waves into the working environment, for example, the canteen kitchen, can escape, which increases the temperature and humidity. These steam wheels complicate the work of the operator considerably, and for example the operation of such machines by eyeglass wearers is causing considerable inconvenience to the operating personnel connected.

Around This problem is usually dealt with waiting for the dishwasher to be unloaded until the rinse chamber has cooled to the load to reduce the working environment by the steam. This approach However, in practice not only with the disadvantage of a lower Throughput connected to be cleaned dishes, but leads Also, that cleaned and dried dishes increased Moisture by itself at the cooling dishes surfaces is subjected to precipitating steam.

From the field of under-counter dishwashers, which are mainly used in the private sector as small appliances used, but partly also used in commercial kitchens, approaches are known to address this problem. So shows, for example DE 10 2005 023 428 A1 a commercial dishwasher with a spray chamber for receiving items to be washed, which has a fan for generating an air flow. The air flow is directed from an air inlet below the washware area, for example a gap below a flap door of the dishwasher, through the spray chamber to an air outlet, wherein a deflector device is used. The fan then directs the airflow to an outlet.

These and similar solutions proposed for small appliances and vanity units to reduce the problem of steam whitening (see, for example, also WO 2006/123947 A1 and WO2006 / 120062 A1 ), however, are in many cases not directly transferable to larger commercial equipment. Thus, especially in hood dishwashers, the volume of the washing chamber is dimensioned such that a discharge of the steam from the washing chamber into the surrounding space by means of a blower not reduce the above-described effect of stress on the working environment, but could possibly even increase. In addition, there are problems with hood type dishwashers due to the opening hood that a flow guide, as in DE 10 2005 023 428 A1 is proposed for front-loading dishwashers, is not directly applicable.

Object of the invention

A It is therefore an object of the present invention to provide a dishwasher to propose for commercial use, which as a hood dishwasher is configured and which the above-described disadvantages of known hood dishwashers avoids. In particular, the dishwasher should be like this be set up that stress the work environment by Steam is significantly reduced.

Description of the invention

These Task is by a dishwasher with the features of the independent claim. advantageous Further developments are shown in the subclaims. These advantageous features can be used individually or also in Combination can be realized.

It is a dishwasher in hood design proposed for commercial use. Besides that already described subframe, the washing chamber with the flushing system and at least partially enclosing the rinsing chamber Hood has the dishwasher at least one Kondensatniederschlagseinrichtung on. This condensate precipitator is closed Hood connected to the flushing chamber and has at least a blower for extracting steam from the closed Rinsing chamber on. Furthermore, in the condensate precipitation device at least one condensation surface for condensing Steam provided.

By the dishwasher according to the invention the burden on the working environment is considerably reduced, on the one hand Steam can be extracted with the hood closed, this steam but not immediately ejected into the work environment is, but previously condensed at least partially on the Kondensatniederschlagseinrichtung. Furthermore, by the proposed dishwasher a better drying of the dishes in the rinsing chamber achieved because moisture drained from the washing chamber becomes.

Under the term "dishwasher" is as above listed, a dishwasher for a variety to understand possible objects. Preferably These are crockery, cutlery, glasses, trays or similar used in commercial kitchens Equipment.

alternative or in addition, however, also other items be cleaned, for example, objects from the field of hospital needs.

The Condensate precipitation device may be wholly or partly in the Hood, in particular in a cover part of the hood, be included. alternative or in addition can also be a complete or partial integration into a rear wall and / or a frame, which connects the hood and the base, be provided. Also a complete or partial integration into the Subordinated itself is conceivable.

The Connection of condensate precipitation device with the rinsing chamber in particular via at least one connection to the Hood done. This has opposite a suction in the floor area the rinsing chamber has the advantage that less moisture sucked is and, in particular, that the suction to an upward flow within the rinsing chamber which performs a drying of the crockery after rinsing favors. In particular, the at least one connection in the area of the ceiling the hood, for example, in a cover part, be arranged. The connection of the condensate precipitation device with the connection can, especially if the Kondensatnückschlagseinrichtung not in the hood, in particular not in a cover part of the hood, is received, via a telescopic tube and / or a flexible hose so that this connection also when opening the hood is maintained. Also other connecting devices for the connection between condensate precipitation device and connection, that of a possible change in the distance between take these two elements into account when opening the hood, is however conceivable.

Next or alternatively to provide the connection in the region of the lid the hood may comprise the hood further flow guidance devices, to an upward flow of the vapor during suction to favor. This flow guide device can be a uniform flow favor the rinsing chamber, the faster and to cause more uniform drying of dishes. In particular, flow fins can be used for this purpose and / or a perforated false ceiling in the lid, to the uniformity of the flow to promote.

The Blowers do not necessarily have to be integrated with or in the immediate vicinity of the other components be arranged the Kondensatniederschlagseinrichtung. Also one decentralized arrangement with a corresponding connection of the components is conceivable. Furthermore, it has proved to be advantageous if the condensate precipitation device is set up such that at least a partial stream sucked from the rinsing chamber Air or steam after flowing through the Condensate precipitation device back into the washing chamber is returned. This embodiment has the Advantage, that on the one hand an extraction from the washing chamber can be done by the blower, but at the same time, together with an additionally sucked air stream, air is directed into the rinsing chamber (for example, under atmospheric pressure or under a slight overpressure). This way you can a circulation favored without this a second, air in the rinsing chamber hineindrückendes or in-line fan needed becomes.

In many cases, hood dishwashers have the problem that a considerable ceiling height is required to accomplish the required by the user opening the hood. For this reason, it has proved to be advantageous to design the hood in several parts. Thus, in particular, the hood may have a cover part and a hood jacket, wherein when opening the hood, the cover part and the hood coat zumin least partially separated from each other. For example, the hood jacket can be folded away from the cover part, or the hood jacket can, for example, be moved substantially vertically upwards, wherein the central cover part remains in its original position. The hood sheath slides in this case peripherally past the lid part. However, other embodiments of a split hood are conceivable.

at stationary cover part may preferably the Kondensatniederschlagseinrichtung be at least partially disposed in the stationary cover part. In this Case eliminates in particular the problem of the connection the condensation precipitator with the (conventionally movable) Cover part, which (see above) otherwise, for example, by the use a flexible hose and / or a telescopic hose solved would have been. Alternatively or in addition to the accommodation the Kondensatniederschlagseinrichtung in the stationary cover part can advantageously also the flow guide device and / or the connection to the condensate precipitation device in be provided the stationary cover part.

Further advantageous embodiments relate to the embodiment the Kondensatniederschlagseinrichtung. So this can be at least a chamber having at least one inlet and at least one outlet and continue to include at least one condensate drain. The condensate drain serves to remove the condensed steam (condensate) and may be connected to, for example, a sewage connection or can also use one of the tanks of the dishwasher be connected, for example, a flushing water tank. The fan the Kondensatniederschlagseinrichtung can with the inlet and / or be connected to the outlet. Alternatively, several can Blower be provided.

Especially It is advantageous if the chamber of the condensate precipitation device defines at least one flow channel through which sucked Steam from the rinsing chamber passed or is forced through. The blower can alternatively or in addition to the above embodiment also with the at least be connected to a flow channel.

The Kondensatniederschlagseinrichtung can at least one capacitor element comprising the at least one condensation surface for condensing steam. This capacitor element can For example, comprise at least one cooling plate, wherein this at least one cooling plate is not actively cooled can be or alternatively, or in addition, with a Cooling medium can be sprayed. Alternatively or In addition, the at least one capacitor element also at least one of a cooling medium Heat exchangers comprise, in particular a plate heat exchanger and / or a cooling coil heat exchanger.

The at least one capacitor element may in particular be arranged in such a way be that this, in particular the at least one condensation surface, slanted relative to the horizontal is. In this way, condensate can flow along the condensation surface flow away. Furthermore, alternatively or additionally, a lamella arrangement of the at least one capacitor element, a meander arrangement and / or a parallel arrangement of several Capacitor elements may be provided.

When it has proven to be particularly advantageous if the condensate precipitation device is configured is to at least the heat contained in the extracted steam partially recover. This facility allows a particularly energy-saving operation of the dishwasher, which is especially true in commercial dishwashers makes beneficial noticeable.

To This purpose is especially condensate precipitation devices with at least one water-cooled capacitor element proved to be advantageous. In this case, at least one first capacitor connection be provided, which with a water supply, in particular a Fresh water supply, in particular a cold water supply, connectable is. Furthermore, at least one second capacitor connection is provided, which connected to a storage tank of the dishwasher is. Especially when using a fresh water supply it has proved to be advantageous if the at least one second capacitor terminal connected to a Nachspülwassertank, since this rinse water tank is usually in the dishwasher the highest degree of purity having.

In particular, the dishwasher can be set up in such a way that a rinsing program is carried out, the condensate precipitator being activated in at least one program step of the rinsing program in order to draw off steam from the rinsing chamber. For example, a control device, for example an electronic and / or computer-equipped control device may be provided, which controls the sequence of the washing program. In this way, the vapor extraction directly, without any intervention by a user is required to take place after the other rinsing steps, or it can, alternatively or additionally, also Zwi be provided rule. In particular, however, at least one suction program step is advantageous at the end of the washing program.

As described above, is in the heat recovery when using water-cooled condensate precipitators a return of the heated cooling water useful in a rinse water tank. So, for example initially provided a Nachspülprogrammschritt be in which the dishes with a rinse liquid (usually water, which in addition with additives, For example, rinse aids or the like, offset can be) is rinsed. In a subsequent aspiration program step then cooling water in the Kondensatniederschlagseinrichtung be heated by steam from the washing chamber to this Amount of heat then again the final rinse in the rinse water tank. This can the energy required to heat the rinse liquid in the rinse water tank (which is typically at a temperature of 83 to 85 ° C preheated) significantly reduced become.

The described advantageous embodiment, in particular by means of realized a two-level control in Nachspülwassertank be, which is possible by means of a small regulatory effort is. For example, the post-rinse program step be carried out until the level in the rinse water tank has reached a lower predetermined level. The ensuing Suction program step with supply of heated cooling water from the Kondensatniederschlagseinrichtung in the Nachspülwasser tank can then be done, for example, for so long until the level in Nachspülwassertank again an upper has reached the given level. Of course they are however, other types of regulation or additional Control mechanisms implementable. Also an overpass the cooling water in another tank, such as a Circulation tank or flushing water tank, can for a partial heat recovery can be used.

Farther can, in particular for the described heat recovery, at least one fluid valve for the controller a supply of a cooling medium, in particular cooling water, be provided in the Kondensatniederschlagseinrichtung. In this Case is advantageously the dishwasher (or the controller) is set up such that the actuation of the liquid valve and the actuation of the Blower condensate precipitator time be synchronized. For example, this synchronization such that an opening of the liquid valve (and thus a start of the supply of cooling water in the Kondensatniederschlagseinrichtung) are coupled in time with a start of the fan, for example take place at the same time or delayed by a predetermined period of time respectively. Closing the liquid valve and turning off the blower, on the other hand advantageously offset in time, so that a liquid supply is stopped before the fan is turned off, for example at a time when the heating of the cooling water in the condensate precipitation device is no longer sufficient Measurements are made to suffice the rinse water tank To supply heat. In this case, then only the blower still for a suction of the remaining remaining vapor from the closed rinsing chamber to care.

The End of the aspiration program step (or the last of the Absaugprogrammschritte) and thus in particular a termination of Washing program can the user of the hood dishwasher For example, be displayed. The user is thereby taught that now an opening of the hood is possible without burdening the working environment with steam turf. Also one automatic opening can be provided. Furthermore you can optionally also be provided locking systems, which, for example premature opening of the hood before completion of the steam extraction prevent.

Further Details and features of the invention will become apparent from the following Description of Preferred Embodiments in Connection with the dependent claims. The embodiments are shown schematically in the figures. Same reference numbers in the individual figures designate the same or functionally identical or in terms of their functions corresponding elements.

in the Individual shows:

1 a hood dishwasher with a recorded in the rear wall Kondensatnückschlagseinrichtung;

2 one too 1 alternative hood dishwasher with recorded in a cover part of the hood condensate precipitation device;

3 one to the 1 and 2 alternative embodiment of a hood dishwasher with a condensate precipitator, which is accommodated in a projection to the rear wall;

4 a hood dishwasher with swivel hood;

5 an embodiment of a hood dishwasher with a recorded in the lower part of the dishwasher condensate precipitation device;

6A to 6C various embodiments of a condensate precipitation device for use in a rear wall;

7A to 7D various embodiments of a Kondensatniederschlagseinrichtung for use in a cover part or an approach to the rear wall;

8A and 8B two embodiments of a capacitor element with a liquid cooling;

9 an embodiment of a Kondensatniederschlagseinrichtung with partial recycling of the dried air to the rinsing chamber; and

10 an embodiment of a liquid system of a preferred dishwasher in a schematic representation.

In 1 is a first embodiment of an inventive, designed as a hood machine dishwasher 110 shown. The dishwasher 110 has a base 112 in which, for example, one or more tanks are provided for rinsing and / or Nachspülflüssigkeiten, and other elements, such as heaters, connections, controls and the like. Usually is at the front of the undercarriage 112 a control panel arranged by means of which the dishwasher 110 can be served. Alternatively or additionally, the control panel also at the top of the hood 118 (see below) and / or be arranged separately on a side control box.

Furthermore, the dishwasher 110 a back wall 114 on, which when setting up the dishwasher 110 for example, parallel to a wall 116 can be arranged. In the back wall 114 You can add more items to the dishwasher 110 be included, for example, elements for the supply and removal of rinsing liquids, parts of the controller or mechanical elements for operating mechanical functions of the dishwasher 110 ,

Furthermore, the dishwasher 110 a hood 118 on. This hood 118 , which may have, for example, a cuboidal, cylindrical or otherwise shaped shape enclosing a rinsing chamber 120 , In this washing chamber 120 For example, receiving devices (eg in the form of depressions, rails, steps or the like) may be provided to receive one or more dish racks (not shown) in which the dishes to be cleaned are placed in the dishwasher 110 can be introduced. Also, an immediate introduction of the dishes in the washing chamber 120 (without using a dish rack) is conceivable. Furthermore, in the rinsing chamber 120 usually one or more spray systems provided (see also below, 5 ), and a tub and a drain.

The hood 118 For example, it may be configured such that it is closed upwards, forwards and to the sides, whereas the hood 118 to the back wall 114 is open. In this case, the back wall forms 114 a component of the hood 118 which the rinsing chamber 120 encloses.

The hood 118 is with a (in 1 not shown) rail system of the rear wall 114 connected. Furthermore, an opening lever 122 provided by means of which the hood 118 can be moved linearly upwards to the rinsing chamber 120 to release, for example, for the purpose of loading or unloading with good to be washed. The rail or elevator system is usually designed such that in the (in 1 dashed lines) open position the hood 118 by appropriate, for example in the back wall 114 recorded counterweights is kept in balance so as not to fall back into the closed position only by gravity.

In addition, the dishwasher has 110 according to the embodiment in 1 but a Kondensatniederschlagseinrichtung 124 on which in the in 1 illustrated embodiment in the rear wall 114 is arranged. It is in 1 an embodiment of this Kondensatniederschlagseinrichtung 124 shown. Further possible embodiments of this condensate precipitation device 124 are in the 6A to 6C shown. However, other embodiments are possible.

The condensate precipitation device 124 is in this example at the top of the back wall 114 arranged. She has a chamber 126 with an inlet 128 and an outlet located at the top 130 on. The inlet 128 is through a flexible hose 132 with a connection 134 at the hood 118 connected. Alternative embodiments are also possible, for example the use of a telescopic tube instead of the flexible tube 132 , or an alternative arrangement of the connection 134 on one of the back walls, for example 114 facing side of the hood 118 in the area of the ceiling.

Furthermore, the Kondensatniederschlagseinrichtung 124 capacitor elements 136 on. In this embodiment, these are capacitor elements 136 as passive cooling plates 138 configured, which in parallel, vertical lamellar arrangement in the chamber 126 are arranged and their surfaces 140 Form condensation surfaces. For the cooling plates preferably good heat conductive materials can be used, for example metals, preferably stainless steel, copper, aluminum or similar materials. Preferably, a total surface area of at least 0.1 m ² , preferably a larger surface, is available. The surface typically does not exceed a value of about 3 m ² .

Furthermore, the Kondensatniederschlagseinrichtung a blower 142 on, which in this embodiment at the outlet 130 is arranged. This fan 142 is set up in a suction program step via the flexible hose 132 moist air from the rinsing chamber 120 to suck in and over the condensation surfaces 140 to lead. The humid air is dehumidified, with condensate in the bottom of the chamber 126 arranged condensate drain 144 drips. The floor may be slightly bevelled or funnel-shaped for this purpose, for example. From the condensate drain 144 can condensate then into a drain 146 drop, which may for example be connected to a sewer. Alternatively, the process 146 also, as described in more detail below, with one or more tanks of the dishwasher 110 be connected.

The fan 142 is designed such that the sucked air is discharged to the ceiling. The capacitor elements 136 make sure that this discharged air, which is released into the working environment, is essentially free of steamwaves. In this way, the load on the working environment is reduced or avoided by steam racing. When sucking in moist air and / or steam from the rinsing chamber 120 is used to equalize the pressure in the rinsing chamber 120 Room air through a gap between hood 118 and undercarriage 112 in the rinsing chamber 120 sucked. Also by appropriate column between back wall 114 and hood 118 a pressure equalization can take place. In this respect, the above concept of "enclosing" the rinsing chamber 120 through the hood 118 not to be understood that hereby a hermetic seal of the washing chamber 120 is intended, but only to the extent that leakage of moisture in liquid form or in the form of vapor from the washing chamber 120 is essentially prevented or slowed down into the working environment.

In the 6A to 6C are alternative embodiments of the condensate precipitation device 124 shown, which in vertical arrangement, for example in the rear wall 114 the dishwasher 110 can be used. These embodiments are different from those in FIG 1 illustrated embodiment by the arrangement and configuration of the capacitor elements 136 , As in 1 also have the embodiments in the 6A and 6C cooling plates 138 as passive capacitor elements 136 on, but which differ in their arrangement. So is in 6A an arrangement of these cooling plates 138 in the upper area of the chamber 126 , just before the blower 142 , provided, wherein a meandering arrangement of the cooling plates 138 is selected. In this way, the air to be dehumidified (symbolically indicated by reference numeral 148 ) redirected several times. The cooling plates 138 can be arranged slightly inclined, for example, to drain the condensate and dripping towards the condensate drain 144 to enable.

In contrast to 6A are the cooling plates 138 in the embodiment according to 6C horizontally and lamellar, immediately behind the inlet 128 to the chamber 126 , This is where the air gets 148 thus directly over the cooling plates 138 directed.

In contrast to the embodiments according to the 6A and 6C indicates in the embodiment according to 6B the capacitor element 136 an arrangement of (preferably water-cooled) cooling coils 150 on. As described in more detail below, these cooling coils can be connected, for example, to a cooling water inlet (for example a cold water connection) and, for example, to a drain and / or one or more tanks of the dishwasher on the outlet side 110 , By the in 6B shown active cooling is a more efficient dehumidification accomplished over a longer period of time.

In 2 is a to 1 alternative embodiment of a dishwasher designed as a dishwasher 110 shown. In this embodiment, the condensate precipitator 124 , unlike the design in 1 , not in the back wall 114 but in a lid part 152 the hood 118 arranged. In this embodiment, the condensate precipitator 124 while in the upper part of the lid part 152 arranged or on this cover part 152 placed. It is preferred to allow a good drain of the condensate, as in 2 represented, with respect to the horizontal slightly inclined arrangement of Kondensatniederschlagseinrichtung 124 , for example at an angle of 5 to 10 °. In this case, the lid part 152 be designed such that this during an upward movement of the hood 118 with the entire hood moves up. Alternatively, as shown below by the example of 5 described in more detail, the cover part 152 also as firm with the back wall 114 (or alternatively a frame), wherein when opening the hood 118 not the entire hood 118 , But only a hood coat is driven up.

The embodiment of the condensate precipitation device 124 can in turn be carried out analogously to the embodiments described above. In the 7A to 7D are different embodiments, which in an arrangement in the lid part 152 are preferred, exemplified.

Thus, the arrangement according to 7A again a meander arrangement, similar to the embodiment in FIG 6A , of passive, that is not liquid-cooled cooling plates in this example 138 with condensation surfaces 140 , These are diagonally angeord net and allow drainage of the condensate to the condensate drain 144 , In addition, also a connection piece of the inlet 128 with a border 154 be equipped, which in the interior of the chamber 126 protrudes to drain the condensate in the inlet 128 to prevent. Otherwise, the embodiment corresponds to the Kondensatniederschlagseinrichtung 124 according to 7A essentially in accordance with the exemplary embodiment 6A ,

In 7B an embodiment is shown, which in its function and in its construction substantially according to the example 7A corresponds, in which, however, the cooling plates 138 via spray elements 156 be sprayed with a cooling liquid, for example with cold water. This coolant, together with the condensate, runs into the condensate drain 144 and can either a wastewater connection or, alternatively or additionally, also one or more tanks of the dishwasher 110 be supplied. Spraying the cooling plates 138 with coolant thus provides an intermediate step between a passive embodiment of the capacitor elements 136 and an active embodiment and increases the efficiency of the precipitation of the condensate in the air to be dehumidified 148 ,

In 7C a further embodiment is shown, which is also a modification of in 7A illustrated Kondensatniederschlagseinrichtung 124 represents. Again, as capacitor elements 136 cooling plates 138 shown, which inclined to the horizontal in the chamber 126 are introduced (for example, at an angle between 5 and 10 °). In contrast to the embodiment in 7A and 7B However, in this embodiment, there is no meander arrangement, but the cooling plates 138 are as perforated cooling plates 138 configured, each with one or more openings 158 through which the air to be dehumidified 148 from the inlet 128 to the outlet 130 can flow. Of course, the embodiments according to the 7A to 7C also combinable, so that, for example, in the meandering arrangement according to the 7A and 7B openings 158 in the cooling plates 138 can be provided.

In 7D is, in contrast to the passive or semi-passive embodiments according to the 7A to 7C , an active cooling provided. In this case, the Kondensatniederschlagseinrichtung 124 again, as well as in the 7A to 7C , a, for example, inclined inclined to the horizontal chamber 126 up, with an inlet 128 , an outlet 130 , a condensate drain 144 and capacitor elements 136 , Analogous to the exemplary embodiment in FIG 6B However, is not a passive Küh treatment of the capacitor element 136 provided, but a cooling via cooling coils 150 , There are various possibilities, the capacitor element 136 to design, which exemplifies in the 8A and 8B are shown.

Thus, in the embodiment according to 8A the capacitor element 136 as a pure cooling coil 150 configured, with a first capacitor connection 160 for supplying cooling liquid and a second condenser connection 162 as drain of the cooling liquid. The cooling coil 150 thus forms a heat exchanger 164 in which a quantity of heat from the air to be dehumidified 148 on the cooling liquid in the heat exchanger 164 is transmitted.

In the embodiment according to 8B however, the heat exchanger is 164 of the capacitor element 136 as a plate heat exchanger 166 designed, with flat condensation surfaces 140 , Inside the plate heat exchanger 166 can turn cooling coils 150 be provided, which, for example, in turn meandering through the heat exchanger 166 be passed or the plates can also be completely and homogeneously flowed through by the cooling medium.

Other embodiments of heat exchangers, alternatively to those in the 6B . 7D and 8B illustrated embodiments of the capacitor elements 136 , are possible. Also, combinations of the illustrated heat exchangers with other types of capacitor elements 136 , for example, with passive cooling plates 138 , are conceivable.

In 3 is a third embodiment of the dishwasher 110 shown, which is a modification of the embodiment according to 1 represents. Again, the condensate precipitator 124 in the back wall 114 is not included, as in 1 , parallel to the wall 116 but forms a substantially perpendicular from the wall 116 away-reaching approach 168 to the back wall 114 , In this case, the condensate precipitation device 124 for example, be configured again as in one of the embodiments 7A to 7D shown.

In 4 is an alternative embodiment of a dishwasher 110 shown in which the dishwasher 110 is again configured as a hood dishwasher. In contrast to the embodiments in the 1 to 3 this is the hood 118 but not linear along the back wall 114 proceed upwards, but will open in a pivoting movement 170 on a hinge 172 swung upwards. This embodiment shows that other types of hood dishwashers are possible, which in turn also a hood 118 in which, however, the opening of the hood 118 is modified compared to the preceding embodiments.

Also at the in 4 shown embodiment of the dishwasher 110 is again a condensate precipitation device 124 intended. In this case, the condensate precipitation device is in this embodiment 124 in the cover part of the hood 118 intended. The embodiment of the condensate precipitation device 124 For example, in turn, according to the embodiments of the 7A to 7D respectively. Alternatively or additionally, the condensate precipitation device 124 but again in the back wall 114 and / or the undercarriage 112 be arranged. In this case, the embodiments of the 1 respectively 5 (see below).

In 5 is another embodiment of the dishwasher according to the invention 110 shown. Again, this is analogous to the 1 to 3 to a dishwasher 110 in which the hood 118 by a linear movement along the back wall 114 upwards. Compared to these embodiments, however, several modifications in this embodiment according to 5 added.

A first modification is that the Kondensatniederschlagseinrichtung 124 in the base 112 is included. The condensate precipitation device 124 is in 5 only symbolically represented. The embodiment may, for example, according to the examples in the 7A to 7D respectively. Here are in this symbolic representation of condensate precipitation device 124 however inlet 128 and outlet 130 laterally on the back wall 114 facing side of the housing 126 arranged. The outlet of dried air, for example, by the side of the rear wall 114 provided slots made to the working space.

A further modification compared to the aforementioned embodiments is that in the in 5 illustrated embodiment of the dishwasher 110 the hood 118 is formed in several parts. That's the way the hood points 118 a lid part 152 on which fixed to the back wall 114 connected, and which at the linear opening movement when opening the hood 118 not involved. Next to it is the hood 118 a hood coat 174 on which in the closed state of the hood 118 at its upper end at a fold 176 on the lid part 152 is present, and which with the in the rear wall 114 absorbed rail system is connected. At the opening of the hood 118 through the opening lever 122 thus moves only the hood coat 174 linear along the back wall 114 up. This split design of the hood 118 has the advantage of being for the opening of the hood 118 upwards, that is above the dishwasher 110 to be made available space can be reduced. Alternatively, with the same available space above the dishwasher 110 , another opening of the dishwasher 110 be enabled.

In the rinsing chamber 120 the dishwasher 110 is a rinse tub 178 in the area of the undercarriage 112 added. Furthermore, a spraying system 180 with in this example a plurality of rotatably mounted spray arms 182 . 184 in the rinsing chamber 120 included, with lower spray arms 184 with the undercarriage 112 are connected and upper spray arms 182 with the lid part 152 , For example, for spraying with rinsing liquid in the circulation operation and the spraying of the dishes with rinsing liquid various spray arms 182 . 184 be provided.

This embodiment of the spray system 180 is not shown in the preceding embodiments, but is to supplement mutatis mutandis.

Furthermore, in the embodiment according to 5 in the area of the lid part 152 a flow guide device 186 intended. This flow guide device 186 is in this embodiment as a perforated perforated plate above the spray arms 182 trained and serves the Purpose, a more uniform guidance of suctioned in the Absaugprogrammschritt, to be dehumidified air through the rinsing chamber 120 to ensure. In this way, in particular the most uniform, upwardly directed flow of the extracted air 148 along the into the rinsing chamber 120 introduced crockery be accomplished. In this way, the drying effect can be improved. In addition to the simple perforated plate shown here, other elements of the flow guide device 186 be provided, for example, corresponding slats or the like. Furthermore, in 5 also the influx of air 148 for pressure equalization in the rinsing chamber 120 represented, for example, by an air gap between the base 112 and hood coat 174 , or over the back wall 114 into the rinsing chamber 120 can be done. In addition or alternatively, pressure compensation openings can also be provided.

The lid part 152 again has a connection 134 on. This connection 134 is over a hose 188 or a pipe with the inlet 128 the condensate low impact device 124 connected. Because the connection 134 in this case on the stationary trained cover part 152 is arranged, the hose needs 188 no longer necessary, such as in 1 be configured flexibly or telescopically, but it can also be done, for example, a solid piping. Mechanical damage or susceptibility, which could be done for example by trapping the flexible hose, can be largely avoided.

In the 1 . 5 . 6A to 6C and 7A to 7D are exemplary embodiments of condensate precipitation devices 124 shown in which a single blower 142 in the area of the outlet 130 is provided. This fan 142 However, it can also be configured as an alternative and, for example, with the chamber 126 the Kondensatniederschlagseinrichtung 124 not directly, but be connected via one or more pipes. It should be the blower 142 be dimensioned and designed such that a maximum flow through the Kondensatniederschlagseinrichtung 124 with air 148 from the rinsing chamber 120 is effected, wherein the amount of air respectively to the ability to separate condensate on the capacitor elements 136 should be adjusted.

Theoretically, a blower could 142 also directly with the rinsing chamber 120 be connected to air 148 from the rinsing chamber 120 in the condensate precipitation device 124 to press. However, this embodiment would have the disadvantage that in this case moist air through the pressure equalization column described above (for example, between hood 118 and undercarriage 112 or between hood 118 and back wall 114 ) would be pressed into the working space, so that would escape in this case in this area steam lawns in the working space, before this condensate precipitation device 124 achieved. In this respect, is a "sucking" arrangement of the fan 142 as shown in the embodiments shown above preferred.

The fan 142 but it can also be with the inlet 128 the Kondensatniederschlagseinrichtung 126 be connected, or in the flow channel (for example, in the meander-shaped embodiment according to 7A ) between the cooling plates 138 be arranged. To increase the suction power can also be several fans 142 be provided, but this increases the design effort and operating costs. To overcome this disadvantage is in 9 an embodiment of a Kondensatniederschlagseinrichtung 124 shown, which is both air from the rinsing chamber 120 sucks and over capacitor elements 136 leads. The embodiment of these capacitor elements 136 This corresponds essentially to the illustration in accordance with 1 , In addition to the use of cold plates 138 However, other embodiments are conceivable, beispielswei se embodiments described above with actively cooled with a cooling medium heat exchangers 164 ,

Immediately to the blower in the flow channel 142 (in this case outside the housing of the chamber 126 arranged engine 190 of the blower 142 ), however, divides the flow channel. While a part of the air 148 over the outlet 130 being discharged into the work environment is going through a repatriation 192 a partial flow back into the rinsing chamber 142 directed and supports the pressure equalization, then again on the intake into the inlet 128 the Kondensatniederschlagseinrichtung 124 to be fed. In this way, at least a partial flow of air 148 repeatedly over the capacitor elements 136 directed. In addition to the support of the pressure compensation, this embodiment thus causes a further reduction of the fired steam released into the working environment. The ratio between recycled partial flow and ejected partial flow can, for example, via the opening cross-sections of the outlet 130 and the return 192 can be determined and can be adjusted, for example via a slide and / or valves, to effect optimal drying.

In 10 is symbolically a preferred embodiment of the dishwashing system of the dishwasher 110 shown, including the Kondensatniederschlagseinrichtung 124 , It is in this embodiment in the condensate Facility 124 a heat exchanger 164 provided, which here symbolically in the form of a cooling coil 150 is shown. Through the inlet 128 is by means of the blower 142 air 148 from the rinsing chamber 120 (not shown) via the heat exchanger 164 headed to finally over the outlet 130 to be expelled into the environment.

The heat exchanger may, for example, according to one of the embodiments in the 8A or 8B be designed. Alternatively, however, is the use of a Kondensatniederschlagseinrichtung 124 according to the example in 7B conceivable. This will be a first capacitor connection 160 of the heat exchanger 164 with a cold water connection 194 connected. The second capacitor connection 162 however, is preferably via a free outlet 196 with a rinse water tank 198 the dishwasher 110 connected. The inflow of fresh water via the cold water connection 194 in the heat exchanger 164 can be via a liquid valve 200 , For example, a solenoid valve to be controlled.

The rinse water tank 198 is in this embodiment preferably designed as a two-level tank, with an upper level sensor 202 and a lower level sensor 204 , The rinse water tank is via a pump 206 and a piping system 208 with the spray system 180 connected.

Furthermore, the dishwasher can 110 a controller 210 which, for example, can be configured as described above, that is to say comprise in particular one or more computers, and which is preferably set up in terms of programming in order to carry out a rinsing program. For example, (in 10 not shown) the controller 210 Information of the level sensors 202 . 204 ask, the pump can 206 control and can the liquid valve 200 and the engine 190 of the blower 142 drive.

Thus, as already described above, for example, a post-rinse program step may be carried out, in which (for example, following one or more rinsing steps, in which the dishwasher 110 operated in the circulation mode) the dishes in the washing chamber 120 with rinsing liquid from the rinsing water tank 198 is rinsed. For example, while the level of Nachspülflüssigkeit in Nachspültwassertank 198 from the level of the upper level sensor 202 to the level of the lower level sensor 204 fall. Once this lower level is reached, the controller will start 210 the pump 206 automatically stopped. During this rinse program step, the liquid valve is 200 preferably closed.

Subsequently, in a Absaugprogrammschritt the blower 142 be started and (at the same time or preferably only slightly delayed), the liquid valve 200 be opened. In this case, cooling water flows through the heat exchanger 164 , and a condensate deposit on the heat exchanger 164 may happen. This will remove from the rinsing chamber 120 aspirated air dehumidifies before it is released back into the environment. "Consumed" cooling water, which after flowing through the heat exchanger 164 Heat from the steam from the rinsing chamber 120 has taken over the free outlet 196 the rinse water tank 198 supplied, until that through the upper level sensor 202 defined upper level is reached again. Subsequently, the liquid valve 200 closed. A shutdown of the fan 142 and thus stopping the Absaugprogrammschrittes can simultaneously with this closing of the liquid valve 200 take place, or it may be preferred still a certain caster can be used, within which further air 148 from the rinsing chamber 120 is sucked.

110

dishwasher

112

undercarriage

114

rear wall

116

wall

118

Hood

120

rinsing chamber

122

opening lever

124

Condensation precipitation device

126

chamber the Kondensatniederschlagseinrichtung

128

inlet

130

outlet

132

flexible tube

134

connection

136

capacitor elements

138

cooling plates

140

condensation surfaces

142

fan

144

condensate drain

146

procedure

148

air

150

cooling coils

152

cover part

154

edge

156

spraying

158

openings

160

first capacitor terminal

162

second capacitor terminal

164

heat exchangers

166

Plate heat exchanger

168

approach

170

pivotal movement

172

hinge

174

hood coat

176

fold

178

wash tub

180

spray system

182

spray arms

184

spray arms

186

Flow guide device

188

tube

190

engine

192

return

194

Cold water supply

196

free outlet

198

Nachspülwassertank

200

liquid valve

202

upper level sensor

204

lower level sensor

206

pump

208

Piping

210

control

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

• - DE 102005023428 A1 [0005, 0006]
• - WO 2006/123947 A1 [0006]
• WO 2006/120062 A1 [0006]

Claims (24)

Dishwasher ( 110 ) for industrial use, comprising a subframe ( 112 ) and a rinsing chamber ( 120 ) with an openable, the rinsing chamber ( 120 ) at least partially enclosing hood ( 118 ), further comprising at least one condensate precipitator ( 124 ), wherein the condensate precipitation device ( 124 ) with the hood closed ( 118 ) with the rinsing chamber ( 120 ), wherein the condensate precipitation device ( 124 ) at least one blower ( 142 ) for extracting steam and / or air from the closed rinsing chamber ( 120 ) and wherein the condensate precipitation device ( 124 ) at least one condensation surface ( 140 ) for condensing vapor. Dishwasher ( 110 ) according to the preceding claim, characterized in that the condensate precipitation device ( 124 ) completely or partially in the hood ( 118 ), in particular in a cover part ( 152 ) the hood ( 118 ). Dishwasher ( 110 ) according to one of the two preceding claims, characterized in that the condensate precipitation device ( 124 ) in whole or in part in a back wall ( 114 ) and / or the underframe ( 112 ) and the hood ( 118 ) connecting frame is added. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the condensate precipitation device ( 124 ) in whole or in part in the subframe ( 112 ) is recorded. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the connection of the condensate precipitation device ( 124 ) at least one connection ( 134 ) on the hood ( 118 ). Dishwasher ( 110 ) according to the preceding claim, characterized in that the connection ( 134 ) in the area of the ceiling of the hood ( 118 ) is arranged. Dishwasher ( 110 ) according to one of the two preceding claims, characterized in that the connection ( 134 ) and the condensate precipitator ( 124 ) by a telescopic tube or a flexible hose ( 132 ) are interconnected. Dishwasher ( 110 ) according to one of the three preceding claims, characterized in that the hood ( 118 ) at least one flow guide device ( 186 ), which is arranged to ensure a uniform flow through the rinsing chamber ( 120 ), wherein the flow guiding device ( 186 ), in particular flow lamellae and / or a perforated false ceiling. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the condensate precipitation device ( 124 ) in such a way that at least a partial flow of the flushing chamber ( 120 ) sucked in air after flowing through the condensate precipitation device ( 124 ) back into the rinsing chamber ( 120 ) is returned. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the hood ( 118 ) a cover part ( 152 ) and a hood jacket ( 174 ), wherein the hood ( 118 ) is arranged such that when opening the hood ( 118 ) the lid part ( 152 ) and the hood jacket ( 174 ) are at least partially separated from each other, wherein the lid part ( 152 ) preferably remains substantially stationary. Dishwasher ( 110 ) according to the preceding claim, characterized in that the condensate precipitation device ( 124 ) at least partially in the stationary cover part ( 152 ) is arranged. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the condensate precipitation device ( 124 ) at least one chamber ( 126 ) with at least one inlet ( 128 ) and at least one outlet ( 130 ) as well as at least one condensate drain ( 144 ) having. Dishwasher ( 110 ) according to the preceding claim, characterized in that the blower ( 142 ) with the inlet ( 128 ) and / or the outlet ( 130 ) connected is. Dishwasher ( 110 ) according to one of the two preceding claims, characterized in that the chamber ( 126 ) defines at least one flow channel. Dishwasher ( 110 ) according to the preceding claim, characterized in that the blower ( 142 ) is connected to the flow channel. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the condensate precipitation device ( 124 ) at least one of the following capacitor elements ( 136 ): - at least one cooling plate ( 138 ); At least one cooling plate sprayed by a cooling medium ( 138 ); At least one heat exchanger through which a cooling medium flows ( 164 ), in particular a plate heat exchanger and / or a cooling coil heat exchanger. Dishwasher ( 110 ) according to the preceding claim, characterized in that the at least one capacitor element ( 136 ) has at least one of the following arrangements: - the at least one capacitor element ( 136 ) has a relation to the horizontal oblique orientation; The at least one capacitor element ( 136 ) has a lamellar arrangement; The at least one capacitor element ( 136 ) has a meandering arrangement; The at least one capacitor element ( 136 ) has a parallel arrangement of at least two capacitor elements ( 136 ) on. Dishwasher ( 110 ) according to the preceding claim, characterized in that the condensate precipitation device ( 124 ) at least one water-cooled capacitor element ( 136 ), wherein at least one first capacitor terminal ( 160 ) of the capacitor element ( 136 ) is connectable to a water supply, in particular a fresh water supply, and wherein at least one second capacitor connection ( 162 ) of the capacitor element ( 136 ) with a storage tank of the dishwasher ( 110 ), in particular with a rinsing water tank ( 198 ). Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the dishwasher ( 110 ) is set up to perform a rinsing program, wherein in at least one program step of the rinsing program, the condensate precipitation device ( 124 ) is controlled to steam and / or air from the washing chamber ( 120 ). Dishwasher ( 110 ) according to the preceding claim, characterized in that at least one suction program step is carried out at the end of the washing program. Dishwasher ( 110 ) according to one of the two preceding claims, characterized in that in at least one Nachspülprogrammschritt in the washing chamber ( 120 ) received dishes with a Nachspülflüssigkeit from a Nachspülwassertank ( 198 ) is rinsed, wherein in a subsequent extraction program step cooling water in the Kondensatniederschlagseinrichtung ( 124 ) by steam and / or air from the rinsing chamber ( 120 ) is heated, wherein the heated cooling water in the Nachspülwassertank ( 198 ). Dishwasher ( 110 ) according to the preceding claim, characterized in that the rinse water tank ( 198 ) has a two-level control, wherein the Nachspülprogrammschritt is carried out until the level in Nachspülwassertank has reached a lower level, and wherein the subsequent Absaugungsschrittschritt is carried out until the level in Nachspülwassertank has reached an upper level. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that at least one liquid valve ( 200 ) is provided for the control of a supply of a cooling medium, wherein the dishwasher ( 110 ) is arranged to actuate the liquid valve ( 200 ) and the operation of the blower ( 142 ) synchronize in time. Dishwasher ( 110 ) according to the preceding claim, characterized in that the dishwasher ( 110 ) is arranged such that an opening of the liquid valve ( 200 ) and a start of the blower ( 142 ) can take place substantially at the same time.