DE202007019386U1 - program automation - Google Patents

Abstract

Automatic programmer (110) for commercial use, with:
a subframe (112)
a rinsing chamber (120) with an openable, the rinsing chamber (120) at least partially enclosing hood (118), and
at least one Kondensatniederschlagseinrichtung (124), wherein
the Kondensatniederschlagseinrichtung (124) with the hood closed (118) connected to the washing chamber (120),
the condensation precipitation device (124) has at least one fan (142) for extracting steam and / or air from the closed flushing chamber (120),
the Kondensatniederschlagseinrichtung (124) further comprises at least one condensation surface (140) for condensing vapor, and
the programmer (110) is adapted to perform a wash program, wherein
in at least one program step of the wash program, the condensate precipitation device (124) is actuated in order to extract steam and / or air from the wash chamber (120),
in at least one Nachspülprogrammschritt in the rinsing chamber (120) recorded crockery is rinsed with a Nachspülflüssigkeit from a Nachspülwassertank (198),
in a subsequent extraction program step, cooling water in the condensate precipitator (124) is removed by steam and / or air from ...

Description

Field of the invention

The invention relates to a program machine, and more particularly to a programmer designed as a hood dishwasher with a condensate precipitation device for reducing steam escaping from the dishwasher. Such hood dishwashers are designed as dishwashers for commercial use and are used for example in large kitchens to clean dishes, glasses, cutlery, trays or similar items.

State of the art

In addition to tape transport and basket transport dishwashers are used in commercial kitchens, especially in commercial kitchens of hotels, restaurants, works canteens, hospitals, government agencies, schools or similar institutions, so-called hood program machines as dishwashers. Dishwashers of this type have a base frame and a rinsing chamber which is equipped with a rinsing or spraying system (for example one or more spray arms) for cleaning the dishes. Characteristic of such dishwashers is a hood which encloses the washing chamber and which, for example, can be opened up to open the washing chamber or can be moved upwards (for example by means of a rail system). In the washing chamber usually equipped with dishes to be cleaned dishes baskets are used. Then the hood is closed and the rinse is carried out. After flushing the hood is opened, and the or the baskets with cleaned dishes are removed.

A problem with such hood dishwashers, however, is that when opening the hood of the dishwasher considerable amounts of steam in the form of steam turfs in the working environment, such as the canteen kitchen, can escape, which increases the temperature and humidity. These steam wheels make the work of the operators considerably more difficult, and for example the operation of such machines by eyeglass wearers is associated with considerable inconvenience to the operating personnel.

In order to address this problem, the unloading of the dishwashing machines is usually waited until the washing chamber has cooled down in order to reduce the load on the work environment due to the steam. However, in practice, this procedure is not only associated with the disadvantage of a lower throughput of dishes to be cleaned, but also leads to the fact that cleaned and dried dishes are subject to increased moisture due to steam precipitating on the cooling dishes surfaces.

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.

As another document of the prior art describes the German Utility Model DE 1 808 829 a device for the suction condensation of vapors occurring in continuous dishwashers, wherein a fan sucks the steam through a heat exchanger and the sucked steam-air mixture is in direct heat exchange with cooling water. Furthermore, there is still the document DE 10 2005 046 733 A1 in which a method for the treatment of vapors in dishwashing apparatuses and also a dishwashing apparatus suitable for this purpose is described, wherein in the disclosed method vapors are sucked out of a washing compartment, transported through a heat exchanger and cooled therein, and then the extracted and cooled vapors be discharged into the environment.

Object of the invention

An object of the present invention is therefore to propose a commercial programmer, which is designed as a hood dishwasher and which avoids the disadvantages of known hood dishwashers described above. In particular, the programmer should be set up so that the load on the working environment is considerably reduced by steam racing.

Description of the invention

This object is achieved by a programmer having the features of the independent claim. Advantageous developments are shown in the subclaims. These advantageous features can be realized individually or in combination.

It is proposed as a dishwasher in hood design trained automatic programmer for commercial use. In addition to the already described subframe, the rinsing chamber with the rinsing system and the hood at least partially enclosing the rinsing chamber, the programmer or the hood dishwasher has at least one candy precipitating device. This Kondensatniederschlagseinrichtung is connected with the hood closed with the washing chamber and has at least one fan for extracting steam from the closed washing chamber. Furthermore, at least one condensation surface for condensing steam is provided in the condensate precipitation device.

The programmer of the invention, the burden on the working environment is significantly reduced because on the one hand steam can be extracted with the hood closed, but this steam is not discharged directly into the working environment, but previously condensed at least partially on the Kondensatniederschlagseinrichtung. Furthermore, a better drying of the dishes in the washing chamber is achieved by the proposed programmer, since moisture is removed from the washing chamber.

The term "dishwasher" is, as stated above, a dishwasher for a variety of possible items to understand. Preferably, these are crockery, cutlery, glasses, trays or similar equipment used in commercial kitchens. Alternatively or additionally, however, other objects can also be cleaned, for example items from the field of hospital supplies.

The condensate precipitation device can be completely or partially accommodated in the hood, in particular in a cover part of the hood. Alternatively or additionally, a complete or partial integration in a rear wall and / or a frame which connects the hood and the base, may be provided. Even a complete or partial integration into the subordinate itself is conceivable.

The connection of the condensate precipitation device with the rinsing chamber can take place in particular via at least one connection to the hood. This has the advantage over aspiration in the bottom region of the rinsing chamber that less moisture is sucked in and, in particular, that the suction leads to an upward flow within the rinsing chamber, which favors drying of the picked dishes after rinsing. In particular, the at least one connection can be arranged in the region of the ceiling of the hood, for example in a cover part. The connection of the Kondensatniederschlagseinrichtung with the terminal can, in particular if the Kondensatnückschlagseinrichtung is not included in the hood, in particular not in a cover part of the hood, done via a telescopic tube and / or a flexible hose, so that this connection even when opening the hood upright preserved. However, other connection means for connection between condensate precipitation device and connection, which take into account a possible change in the distance between these two elements when opening the hood, however, is conceivable.

In addition to or as an alternative to providing the connection in the region of the cover of the hood, the hood can comprise further flow guidance devices in order to promote an upward flow of the vapor during suction. This flow guide device can promote a uniform flow through the rinsing chamber, so as to effect a faster and more uniform drying of dishes. For this purpose, in particular flow lamellae and / or a perforated false ceiling may be provided in the lid to promote the uniformity of the flow.

The fan does not necessarily have to be integrated with or in the immediate vicinity of the remaining components of the condensate precipitator. A 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 flow of the air or steam taken in from the flushing chamber returns after flowing through the condensate precipitation device is returned to the rinsing chamber. This embodiment has the advantage that, on the one hand, extraction from the rinsing chamber by the blower can take place, but at the same time, together with an additionally sucked air flow, air is introduced into the rinsing chamber (for example under normal pressure or under a slight overpressure). In this way, a circulation can be promoted, without the need for a second, air in the washing chamber hineindrückendes or in leading blower is required.

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 jacket are at 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.

With a fixed cover part, the condensate precipitation device can preferably be arranged at least partially in the stationary cover part. In this case, in particular eliminates the problem of connecting the condensate precipitation device with the (conventionally movable) cover part, which (see above) would otherwise have been solved for example by the use of a flexible hose and / or a telescopic tube. As an alternative or in addition to accommodating the condensation precipitation device in the stationary cover part, the flow guidance device and / or the connection to the condensate precipitation device can advantageously also be provided in the stationary cover part.

Further advantageous embodiments relate to the configuration of the condensate precipitation device. Thus, this may comprise at least one chamber with at least one inlet and at least one outlet and further at least one condensate drain. The condensate drain serves to remove the condensed steam (condensate) and can be connected, for example, to a sewage connection or can also be connected to one of the tanks of the dishwasher, for example a flushing water tank. The blower of the condensate precipitator may be connected to the inlet and / or the outlet. Alternatively, several blowers can be provided.

It is particularly advantageous if the chamber of the condensate precipitation device defines at least one flow channel through which aspirated vapor is passed or forced through from the flushing chamber. The fan may alternatively or in addition to the above embodiment also be connected to the at least one flow channel.

The Kondensatniederschlagseinrichtung may comprise at least one capacitor element, which comprises the at least one condensation surface for condensing vapor. This capacitor element may for example comprise at least one cooling plate, wherein said at least one cooling plate can not be actively cooled or alternatively, or additionally, can be sprayed with a cooling medium. Alternatively or additionally, the at least one capacitor element may also comprise at least one heat exchanger through which a cooling medium flows, in particular a plate heat exchanger and / or a cooling coil heat exchanger.

The at least one capacitor element can in particular be arranged such that it, in particular the at least one condensation surface, is aligned obliquely with respect to the horizontal. In this way, condensate can flow away along the condensation surface. Furthermore, as an alternative or in addition, a lamination arrangement of the at least one capacitor element, a meander arrangement and / or a parallel arrangement of a plurality of capacitor elements may be provided.

It has proven to be particularly advantageous if the condensate precipitation device is designed to at least partially recover the heat contained in the extracted steam. This device allows a particularly energy-saving operation of the dishwasher, which is particularly noticeable in commercial dishwashers noticeable.

For this purpose, condensate precipitation devices with at least one water-cooled condenser element have proven particularly advantageous. In this case, at least one first capacitor connection can be provided which can be connected to a water supply, in particular a fresh water supply, in particular a cold water supply. Furthermore, at least one second condenser connection is provided, which is connected to a storage tank of the dishwasher. Especially when using a fresh water supply, it has proved to be advantageous if the at least one second capacitor connection is connected to a rinse water tank, since this rinse water tank usually has the highest degree of purity in the dishwasher.

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 suction directly, without any intervention by a user is required to take place after the other rinsing steps, or it may, alternatively or additionally, also be provided Zwischenabsaugungen. In particular, however, at least one suction program step is advantageous at the end of the washing program.

As described above, in the heat recovery using water-cooled Kondensatniederschlagseinrichtungen recycling of the heated cooling water in a rinse water tank makes sense. Thus, for example, a Nachspülprogrammschritt be initially provided, in which the dishes with a Nachspülflüssigkeit (usually water, which may be added in addition with additives, such as rinse aid or the like) is rinsed. In a subsequent extraction program step, cooling water in the condensate precipitation device can then be heated by steam from the rinsing chamber, in order then to supply this heat quantity to the rinsing liquid in the rinsing water tank. As a result, the energy required to heat the rinse liquid in the rinse water tank (which is typically preheated to a temperature of about 83 to 85 ° C) can be significantly reduced.

The advantageous embodiment described can be realized in particular by means of a two-level control in Nachspülwassertank, which is possible by means of a small regulatory effort. For example, the post-rinse program step may be performed until the level in the rinse water tank has reached a lower predetermined level. The subsequent Absaugprogrammschritt with supply of heated cooling water from the Kondensatniederschlagseinrichtung in the Nachspülwassertank can then be carried out, for example, until the level has reached an upper predetermined level in Nachspülwassertank again. Of course, however, other types of control or additional control mechanisms can be implemented. Also, a transfer of the cooling water in another tank, such as a circulation tank or Spülwassertank, can be used for partial heat recovery.

Furthermore, in particular for the heat recovery described, at least one liquid valve for controlling a supply of a cooling medium, in particular of cooling water, may be provided in the condensate precipitation device. In this case, advantageously, the dishwasher (or the controller) is set up such that the actuation of the liquid valve and the operation of the blower of Kondensatniederschlagseinrichtung be synchronized in time. Thus, for example, this synchronization can take place 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. The closing of the liquid valve and the switching off of the fan, however, can advantageously be carried out with a time delay, 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 Kondensatniederschlagseinrichtung is no longer to a sufficient extent to the Rinse water tank to supply enough heat. In this case, then only the blower can still provide for a suction of the remaining remaining vapor from the closed rinsing chamber.

The end of the aspiration program step (or of the last of the aspiration program steps) and thus in particular a termination of the wash program can be displayed to the user of the hood dishwasher, for example. The user is thereby taught that now opening the hood is possible without burdening the work environment with steam wheels. An automatic opening can also be provided. Furthermore, locking systems can optionally also be provided which, for example, prevent premature opening of the hood before completion of the vapor extraction.

Further details and features of the invention will become apparent from the following description of preferred embodiments in conjunction with the subclaims. The embodiments are shown schematically in the figures. The same reference numerals in the individual figures designate the same or functionally identical or with respect to their functions corresponding elements.

In detail 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 dishwasher automatic programmer 110 shown. The programmer or 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 for receiving 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 shown 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 programmer or 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. These cooling coils, as described in more detail below, for example, with a cooling water inlet (for example, a cold water connection) be connected and drain side, for example, with a drain and / or one or more tanks of the dishwasher 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 designed as a hood dishwasher programmer 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 arranged diagonally 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, it is not passive cooling 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 designed as a hood dishwasher automatic programmer 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 trained as a dishwasher Prorammautomaten 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 again shown embodiment is 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 a further embodiment of the invention designed as a dishwasher programmer 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, 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 designed and serves the purpose of a more uniform guidance of suctioned in the Absaugprogrammschritt, to be dehumidified air through the washing 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 Kondensatniederschlagseinrichtung 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, for example, the embodiments described above with actively cooled with a cooling medium heat exchangers 164 ,

Immediately to the blower in the flow channel 142 (with 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 precipitation device 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 Warm 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 can be preferably used after a certain caster, within which further air 148 from the rinsing chamber 120 is sucked.

LIST OF REFERENCE NUMBERS

110

Program machine or dishwasher

112

undercarriage

114

rear wall

116

wall

118

Hood

120

rinsing chamber

122

opening lever

124

Condensation precipitation device

126

Chamber of condensate precipitation device

128

inlet

130

outlet

132

flexible hose

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 connection

162

second capacitor connection

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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102005023428 A1 [0005, 0006]
• WO 2006/123947 A1 [0006]
• WO 2006/120062 Al [0006]
• DE 1808829 U [0007]
• DE 102005046733 A1 [0007]

Claims (21)

Program automat ( 110 ) for commercial use, comprising: a subframe ( 112 ) a rinsing chamber ( 120 ) with an openable, the rinsing chamber ( 120 ) at least partially enclosing hood ( 118 ), and at least one condensate precipitator ( 124 ), wherein the condensate precipitation device ( 124 ) with the hood closed ( 118 ) with the rinsing chamber ( 120 ), the condensate precipitator ( 124 ) at least one blower ( 142 ) for extracting steam and / or air from the closed rinsing chamber ( 120 ), the Kondensatniederschlagseinrichtung ( 124 ) at least one condensation surface ( 140 ) for condensing steam, and the programmer ( 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 ) in at least one Nachspülprogrammschritt in the washing chamber ( 120 ) received dishes with a Nachspülflüssigkeit from a Nachspülwassertank ( 198 ) is rinsed, in a subsequent extraction program step cooling water in the Kondensatniederschlagseinrichtung ( 124 ) by steam and / or air from the rinsing chamber ( 120 ) is heated, and the heated cooling water in the Nachspülwassertank ( 198 ). Program automat ( 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 ). Program automat ( 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. Program automat ( 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. Program automat ( 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 ). Program automat ( 110 ) according to the preceding claim, characterized in that the connection ( 134 ) in the area of the ceiling of the hood ( 118 ) is arranged. Program automat ( 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. Program automat ( 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. Program automat ( 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. Program automat ( 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. Program automat ( 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. Program automat ( 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. Program automat ( 110 ) according to the preceding claim, characterized in that the blower ( 142 ) with the inlet ( 128 ) and / or the outlet ( 130 ) connected is. Program automat ( 110 ) according to one of the two preceding claims, characterized in that the chamber ( 126 ) defines at least one flow channel. Program automat ( 110 ) according to the preceding claim, characterized in that the blower ( 142 ) is connected to the flow channel. Program automat ( 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. Program automat ( 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. Program automat ( 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 programmer ( 110 ), in particular with a rinsing water tank ( 198 ). Program automat ( 110 ) according to claim 1, characterized in that the Nachspülwassertank ( 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. Program automat ( 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 program automaton ( 110 ) is arranged to actuate the liquid valve ( 200 ) and the operation of the blower ( 142 ) synchronize in time. Program automat ( 110 ) according to the preceding claim, characterized in that the program automaton ( 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.

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