DE102007007133A1 - Front-loading dishwasher with heat recovery - Google Patents

Abstract

A dishwashing machine for commercial use is provided, which has a dishwashing chamber with a front door which can be opened for loading and unloading the dishwashing chamber with items to be cleaned. Furthermore, the dishwashing machine has at least one condensation precipitation device, which is connected to the dishwashing chamber and is equipped with at least one fan for sucking and/or blowing vapor and/or air out of the closed dishwashing chamber. The condensation precipitation device also has at least one condensation surface for condensation of vapor. The dishwashing machine additionally has an inlet-air channel for supplying ambient air into the dishwashing chamber. The inlet-air channel is provided with an inlet-air fan.

Description

Field of the invention

The The invention relates to a dishwasher for commercial use according to the preamble of claim 1. Such dishwashers are used, for example, in canteen kitchens, Glasses, cutlery, trays or similar items to clean.

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 single-chamber systems for use. Such Einkammersysteme with a single flushing chamber will be common too referred to as a "front loader" and have a rinsing chamber with an openable front flap for loading and unloading the rinsing chamber with dishes on. dishwashers This type can be used for various purposes be conceived and, for example, as a freestanding Devices are used or as so-called under-counter devices.

in the Difference to household appliances is the problem Dishwashers for commercial use in that the throughput times must be considerably reduced. While in household appliances wash programs until about 2 hours are usual, are in the range of commercial applications rinsing cycles of a few 10 Seconds to a few minutes usual. For this purpose point Dishwashers for commercial use usually several tanks so that during a wash cycle (for what For example, a wash tank is used) already a separate heating a rinsing liquid takes place (for example in a final rinse tank), then at the end of the wash cycle to perform a rinse cycle immediately or with only a slight time offset. After rinsing can then (but also a further drying cycle can be provided) the front flap be opened so that the dishes are removed can be.

A Problem of such commercial dishwashers However, that is when opening the front door significant amounts of steam in the form of steam waves into the working environment, for example, the canteen kitchen, can escape, what the temperature and humidity in this area considerably elevated. These steam wheels complicate the work of the operating staff considerably. For example, the operation of such machines by eyeglass wearers with significant inconvenience 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.

To solve this problem 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. This air flow is conducted 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.

In the DE 10 2005 023 428 A1 However, the proposed solution has the particular disadvantage that the air supply is unregulated and is essentially connected to a leak in the form of a gap below the front flap. Through this gap, however, can easily escape steam in the operation of the dishwasher or even liquid in the work environment. In addition, this gap can easily pollute, whereby the functionality of the suction is greatly reduced.

In addition, other solutions to the problem of vapor growth have been proposed, in particular in the field of small appliances for household use. For example, describe WO 2006/12062 A1 and WO 2006/123947 A1 each small devices, which are provided with a vapor extraction. However, these devices have the disadvantage that in these devices, the steam is dissipated directly into the work environment.

Object of the invention

It is therefore an object of the present invention to propose a dishwasher for commercial use, which avoids the disadvantages of known from the prior art dishwashers and in particular a reliable, low-maintenance solution to the problem of steam formation in the Arbeitsumge offers.

Description of the invention

These Task is solved by a dishwasher with the features of claim 1. Advantageous developments the invention, which realized both individually and in combination are in the dependent claims shown.

The proposed dishwasher is, as described above, designed for commercial use. She is set up to clean dishes of various kinds, in particular Crockery, cutlery, trays, boxes, glasses and / or similar items Wash ware used in commercial kitchens. Also however, other types of items are self-evident can be used, for example, ware from the care and Hospitals.

The Dishwasher includes a washing chamber with an opening front flap for loading and unloading the Rinsing chamber with items to be washed. Usually This front flap will have a hinge to the front flap For example, to be able to fold down, up or to the side, to thereby release the rinsing chamber. Also other types However, front flaps are conceivable. For example, a combination be provided by sliding and folding door. It can, for example when folding down the lower half of the door above the upper half a rod will be pushed upwards.

Farther the dishwasher comprises at least one condensate precipitation device, which is connected to the washing chamber and which over at least one blower for sucking or blowing out Steam and / or air from the closed rinsing chamber features. This condensate precipitation device has at least one condensation surface for condensing vapor.

in the Difference to the prior art includes the dishwasher but still a supply air duct for supplying ambient air in the rinsing chamber. This supply air duct is equipped with a supply air fan Mistake.

The Inventive design of the dishwasher avoids the above-described disadvantages of the prior art in that for example by means of Zuluftgebläses forcibly Ambient air can be introduced into the rinsing chamber, so that a pressure equalization within the rinsing chamber ensured is. The supply air duct may in particular be designed such that contamination of this supply air duct in practice almost completely is excluded. Also leakage of liquid can be avoided by appropriate design of this supply air duct become. By avoiding the problem of negative pressure within the rinsing chamber, for example, damage be avoided by sensitive items.

The Kondensatniederschlagseinrichtung can for example completely or partially received in a cover part of the washing chamber be, and / or it may be a recording of condensate precipitator (again, in whole or in part) in a back wall of the washing chamber respectively.

to Avoidance of the pressure equalization problem described above and to improve the reliability of the supply of ambient air can the dishwasher, for example, set up such be that the blower and the supply fan on time be operated synchronized. For this purpose, for example a corresponding controller may be provided, which these blowers synchronized in time. In particular, this synchronization done so that the fan and the Zuluftgebläse started simultaneously and / or with a predetermined time offset become. After aspiration then the supply air blower, for example stopped simultaneously with or in time before the blower become. This allows a residual exhaust of steam from the rinsing chamber respectively.

Of the at least one supply air duct is preferably as elongated Channel designed, but also the design as a nozzle or short channel piece is possible. Preferably This supply air duct is at least partially in the back wall of the Rinsing chamber arranged. The supply air duct can be a supply air opening to the working environment at the back and / or the top the rinsing chamber have. Furthermore, the supply air duct an injection opening in the bottom area of the washing chamber include. The combination of these embodiments is particularly favorable since in this case an air flow and / or vapor flow within the Rinsing chamber can be generated, which from the bottom of the washing chamber flows upwards. Under "in the ground area" is not necessarily an arrangement in the bottom of the washing chamber itself, but it will be an arrangement in the side walls the rinsing chamber, which at the bottom of the rinsing chamber adjacent, and / or which no further than 1/3 to 1/2 of the Total height of the washing chamber removed from the floor.

In order to prevent leakage of steam waves through the supply air duct, the supply air duct can be equipped, for example, with a supply air valve. This supply air valve should be designed to to switch quickly and to pass through large quantities of supply air, so that, for example, supply air valves (for example, spring-loaded control valves) are advantageously used.

Around to continue the flow within the rinsing chamber and a more uniform drying of the items to be washed can accomplish, in particular in the area of Ceiling of the rinsing chamber flow guidance devices be provided. These flow guiding devices In particular, flow fins and / or include perforated false ceilings.

Around to further promote the drying process and also one To allow pressure equalization, the condensate precipitation device may additionally be set up so that at least a partial flow of the purge chamber sucked air after flowing through the Kondensatniederschlagseinrichtung (and thus after an at least partially dried) returned to the rinsing chamber becomes.

The Kondensatniederschlagseinrichtung may in particular at least one Chamber having at least one inlet and at least one Outlet, and at least one condensate drain for deriving Condensate. For example, this condensate drain can turn back lead into the rinsing chamber, in one or more Tanks of the dishwasher, or the condensate drain can be connected to a drain and / or drain. The fan the Kondensatniederschlagseinrichtung can with the inlet and / or be connected to the outlet of the Kondensatniederschlagseinrichtung or may also be provided in the intermediate area, for example at a location within a flow channel of the condensate precipitator.

The Kondensatniederschlagseinrichtung may in particular at least one Cooling plate, at least one through a cooling medium sprayed cold plate, at least one of one Cooling medium flowed through the heat exchanger (For example, a plate heat exchanger and / or a Cooling coil heat exchanger) or any Combination of these capacitor elements include. Preferably the at least one capacitor element with respect to the horizontal slanted. Furthermore, the at least one Capacitor element having a fin arrangement, for example an arrangement of a plurality of substantially parallel cooling surfaces. Alternatively or additionally, a meander arrangement may also be provided be, for example, by multiple cooling surfaces offset from one another are inserted into each other. In this way In turn, a flow channel can be defined, which also meandering. Also any parallel arrangement of at least two capacitor elements is conceivable.

The Kondensatniederschlagseinrichtung can, for example, one or more passive capacitor elements in the form of cooling surfaces include. Alternatively or additionally, the condensate precipitation device but also at least one water-cooled capacitor element wherein at least a first capacitor terminal of the Condenser element with a water supply, in particular a fresh water supply, is connectable. It is particularly advantageous in this case, if at least one second capacitor terminal of the capacitor element connected to a tank of the dishwasher, especially with a rinse tank. That way, at least a part of the heat of condensation, which depends on the steam the cooling water has been discharged, recycled and reused, for example, the rinse liquid to heat up accordingly.

The Dishwasher may in particular be arranged to carry out a washing program. For example can use the dishwasher for this purpose, as above mentioned, have one or more controls, such as a electronic control, in particular a control, which a or multiple computers (eg, microcomputers). Especially This computer can be set up according to the program be to carry out the washing program.

In This case should be in at least one program step of the wash program the Kondensatniederschlagseinrichtung be driven to steam and / or to suck air out of the rinsing chamber (suction step). For example, this Absaugprogrammschritt performed at the end of the wash program become. To carry out this aspiration program step For example, as described above, the blower and the supply air fan controlled synchronized in time become.

In this case, it is particularly advantageous if rinsing items taken in the rinsing chamber are rinsed with a rinsing liquid from a rinsing tank in at least one rinsing program step. In a subsequent Absaugprogrammschritt then cooling water can be heated from the condensate precipitation device by steam and / or air from the washing chamber, wherein the heated rinse water is passed into the final washing tank. As a result, heat is partially recovered, and subsequent heating of Nachspülwasser can be shortened in time. This saves energy, and the rinse cycle the dishwasher can be further shortened.

Especially the post-rinse tank can have a two-level control, the post-rinse program step, for example, takes so long is carried out until the level in the rinse tank has reached a lower level. In the subsequent suction program step then the level in the rinse tank can be raised again, until the upper level is reached again. Others too However, program designs are conceivable.

at a liquid-cooled capacitor element, in particular a water-cooled capacitor element, can also be a liquid valve for the controller be provided a supply of the cooling medium. The dishwasher is advantageously set up such that the actuation this fluid valve and the operation of the Blower (and possibly also the operation the Zuluftgebläses) synchronized in time become. In particular, in turn, can open of the liquid valve and a start of the blower essentially at the same time. Also a stop of these two Elements can in turn be synchronized in time, but with Preferably, the fan has a certain amount of caster.

embodiments the invention

Further Details and features of the invention will become apparent from the following Descriptions of preferred embodiments in Connection with the subclaims. Here you can the respective features alone or in several be realized in combination with each other. The invention is not limited to the embodiments.

The Embodiments are shown schematically in the figures. The same reference numerals in the individual figures indicate same or functionally equal or in terms of their Functions corresponding elements.

in the Individual shows:

1 a front view of an embodiment of a dishwasher according to the invention;

2 a sectional view in side view of the embodiment of the dishwasher according to 1 ;

3A to 3D various embodiments of Kondensatniederschlagseinrichtungen;

4A and 4B two embodiments of a capacitor element with a liquid cooling;

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

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

In the 1 and 2 is an embodiment of a dishwasher according to the invention 110 shown in schematic representation. The dishwasher 110 is designed as a front loader and has a rinsing chamber 112 with a housing 114 , The housing 114 has a front flap on its front 116 , which can be opened down in this embodiment, to a loading of the washing chamber 112 to allow with dishes. This loading can be done either directly by washing items in appropriate receptacles within the washing chamber 112 is introduced, or it can be done via Spülgutkörbe. Wash ware and the corresponding facilities are in the 1 and 2 not shown.

As in particular from the sectional view in side view according to 2 shows, has the dishwasher 110 over a lid part 118 , which as Kondensatniederschlagseinrichtung 120 is trained. Furthermore, the dishwasher has in this embodiment at its rear wall (that is, the front door 116 opposite side) via a supply air duct 122 , This supply air duct has a supply air opening 124 at the top of the dishwasher 110 on. In the area of this supply air opening 124 is in the supply air duct 122 a Zuluftgebläse 126 added. The supply air duct 122 opens at an injection opening 128 in the rinsing chamber 112 , This injection opening 128 is in the lower part of the rinsing chamber 112 arranged, that is immediately above a liquid level of a wash tank 130 , which chamber below the flushing 112 is included. Within the supply air duct 122 is still in this embodiment, a spring-loaded air inlet flap 132 arranged, which can serve as a flow valve and which, for example, a leakage of steam waves from the washing chamber 112 difficult in the working environment.

The condensate precipitation device 120 has a chamber 134 with an inlet 136 and an outlet 138 on. In this case, the outlet is on top of the dishwasher 110 arranged, but alternatively or additionally, such as in 1 indicated, the outlet 138 also on the side of the dishwasher 110 could be arranged.

Inside the chamber 134 is in the in 2 illustrated embodiment, a capacitor element 140 arranged, which in this simple embodiment, a simple cooling plate 142 with condensation surfaces 144 is. Through the cooling plate 142 becomes a flow channel 146 within the Kondensatniederschlagseinrichtung 120 Are defined. In the outlet 138 is a fan 148 arranged, which preferably, as described above, synchronized with the Zuluftgebläse 126 is operated.

Furthermore, the condensate precipitation device has 120 via a condensate drain 150 , About this condensate drain 150 may in this embodiment condensate from the Kondensatniederschlagseinrichtung 120 directly into the wash tank 130 flow away. Alternatively, a drain could also be provided, or, as described in more detail below, condensates could be transferred to a final rinse tank.

Immediately below the Kondensatniederschlagseinrichtung 120 , in the pelvic area of the rinsing chamber 112 , is a flow guide device 152 provided, which is designed for example as a perforated ceiling plate. This perforated ceiling sheet serves to airflow within the chamber 112 to homogenize, to accomplish in this way a more uniform drying of the dishes.

The fan 148 the Kondensatniederschlagseinrichtung 120 and the supply fan 126 are preferably operated synchronously, as described above. In this way, steam and / or humid air from the rinsing chamber 112 in the chamber 134 the Kondensatniederschlagseinrichtung 120 be sucked without the required pressure equalization through leaks in the housing 114 the rinsing chamber 112 would have to be done (for example, a gap below the front door 116 ). The condensate precipitation device ensures reliable dehumidification of the air from the rinsing chamber 112 before it is released to the work environment.

In the 3A to 3D are various alternative embodiments of the condensate precipitator 120 shown, which alternative to the embodiment according to 2 can be used. It should be noted that in addition to a formation of Kondensatniederschlagseinrichtung 120 in the lid part also an analogous design on the back of the washing chamber 112 (that is, in a vertical orientation) is conceivable.

The arrangement in 3A shows a meander arrangement of passive, that is not liquid-cooled in this example cooling plates 142 with condensation surfaces 144 , These are arranged obliquely (ie inclined to the horizontal) and thereby allow drainage of the condensate to the condensate drain 150 , In addition, also a connection piece of the inlet 136 with a border 154 be equipped, which is in the chamber 134 extends to drain the condensate into the inlet 136 to prevent. Otherwise, the embodiment corresponds to the Kondensatniederschlagseinrichtung 120 essentially the Kondensatniederschlagseinrichtung 120 according to the embodiment in 2 , An exhaust air stream 156 flows through the flow channel 146 the chamber 134 in a meandering flow, the condensation surfaces 144 the capacitor plates 142 be overflowed several times. Furthermore, in the embodiment according to 3A a drain 158 provided, in which the condensate can drain. This embodiment is, as described above, optional.

In 3B is an embodiment of a Kondensatniederschlagseinrichtung 120 shown, which in its function and in its structure substantially according to the example 3A corresponds, in which, however, the cooling plates 142 via spray elements 160 be sprayed with coolant, for example with cold water. This coolant, together with the condensate, runs into the condensate drain 150 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 142 with coolant thus provides an intermediate step between a passive embodiment of the capacitor elements 140 and an active embodiment and increases the efficiency of the precipitation of the condensate in the exhaust air to be dehumidified 156 ,

In 3C a further embodiment is shown in which also a modification of the in 3A illustrated Kondensatniederschlagseinrichtung 120 is present. Again, as capacitor elements 140 cooling plates 142 used, which inclined to the horizontal (for example, at an angle of about 2 to 10 °, preferably about 5 °, as in the other embodiments also) in the chamber 134 are introduced. In contrast to the embodiment in 3A and 3B However, in this embodiment, there is no meander arrangement, but the cooling plates 142 are designed as perforated cooling plates, each with one or more openings 162 through which the air to be dehumidified 156 from the inlet 136 to the outlet 138 can flow. Of course, the embodiments according to the 3A and 3C also combinable, so that, for example, in the meandering arrangement according to the 3A and 3B openings 162 in the cooling plates 142 can be provided.

In 3D is, in contrast to the passive or semi-passive embodiments according to the 3A to 3C , an active cooling provided. In this case, the Kondensatniederschlagseinrichtung 120 again, as well as in the 3A to 3C , a, for example, inclined inclined to the horizontal chamber 134 up, with an inlet 136 and an outlet 138 , a condensate drain 150 and a capacitor element 140 , However, there is no passive cooling of the capacitor element 140 provided, but a cooling via cooling coils 164 , There are various possibilities, the capacitor element 140 to design, which, for example, in the 4A and 4B are shown.

Thus, in the embodiment according to 4A the capacitor element 140 as a pure cooling coil 164 configured, with a first capacitor connection 166 for supplying cooling liquid and a second condenser connection 168 as drain of the cooling liquid. The cooling coil 164 thus forms a heat exchanger 170 in which a quantity of heat from the air to be dehumidified 156 on the coolant of the heat exchanger 170 is transmitted.

In the embodiment according to 4B however, the heat exchanger is 170 of the capacitor element 140 as a plate heat exchanger 172 designed, with flat condensation surfaces 144 , Inside the plate heat exchanger 172 can turn cooling coils 164 be provided, which, for example, in turn meandering through the heat exchanger 170 be passed or plates can also be completely and homogeneously flowed through by the cooling medium.

Also other types of heat exchangers, alternatively to those in the 3D and 4A . 4B illustrated embodiments of the capacitor elements 140 , are possible. Also combinations of the illustrated heat exchangers 170 with other types of capacitor elements 140 , for example, with passive cooling plates 142 , are conceivable.

In the embodiment in the Kondensatniederschlagseinrichtung 120 which in the 2 and 3A to 3D is shown, is the fan 148 in the area of the outlet 138 arranged. This fan 148 However, it can also be configured alternatively, for example with the chamber 134 the Kondensatniederschlagseinrichtung 120 not directly, but be connected via one or more pipes. It should be the blower 148 be dimensioned and designed such that a maximum flow through the Kondensatniederschlagseinrichtung 120 with exhaust air 156 from the rinsing chamber 112 is effected, wherein the amount of air respectively to the ability to separate condensate on the capacitor elements 140 should be adjusted.

The fan 148 but it can also be with the inlet 136 the Kondensatniederschlagseinrichtung 120 be connected. Alternatively or additionally, this fan 148 also in the flow channel 146 (For example, in the meander-shaped embodiment according to 3A ) between the cooling plates 142 be arranged. To increase the suction power can also be several fans 148 be provided, but this increases the design effort and operating costs. To overcome this disadvantage is in 5 an embodiment of Kondensatniederschlagseinrichtung 120 shown, which is both air from the rinsing chamber 112 sucks and over capacitor elements 140 leads. These capacitor elements 140 are in turn in the illustrated embodiment as cooling plates 142 formed, which, however, are not arranged horizontally but vertically in this embodiment. This would be, for example, in an arrangement of Kondensatniederschlagseinrichtung 120 at the back of the dishwasher 110 meaningful. Analogously, the condensate precipitation device 120 according to 5 However, be designed as a horizontal condensate precipitation device. In addition to the use of cold plates 142 are, alternatively or additionally, also conceivable other embodiments, for example, in turn, the embodiments described above with heat exchangers 170 ,

Immediately to the flow channel 146 taken in blowers 148 (in this case outside the chamber 134 arranged engine 174 of the blower 148 ), however, divides the flow channel 146 , While a part of the air 156 over the outlet 138 being discharged into the work environment is going through a repatriation 176 a partial flow back into the rinsing chamber 112 directed and supports the pressure equalization, then again on the intake into the inlet 136 the Kondensatniederschlagseinrichtung 120 to be returned. In this way, at least a partial flow of air 156 repeatedly over the capacitor elements 140 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 138 and the return 176 can be determined and can, for example via one or more slides and / or valves, be set to effect optimal drying.

In 6 is schematically a preferred embodiment of the washing system of the dishwasher 110 shown, including the Kondensatniederschlagseinrichtung 120 , It is in this embodiment in the condensate precipitation device 120 a heat exchanger 170 provided, which here symbolically in the form of a cooling coil 164 is shown. Through the inlet 136 is by means of the blower 148 air 156 from the rinsing chamber 112 (indicated here only symbolically) via the heat exchanger 170 headed to finally over the outlet 138 to be expelled into the environment. In the rinsing chamber 112 opens at an injection opening 128 the supply air duct 122 in which the supply air blower 126 is arranged. Essentially, with regard to the possible embodiment of the rinsing chamber 112 to the embodiment according to 2 to get expelled. Not shown is a wash tank 130 , which, for example, in the bottom area of the washing chamber 112 is arranged, or which is designed as a separate tank.

The heat exchanger 170 For example, according to one of the embodiments in the 4A or 4B be designed. Alternatively, however, is also a use of Kondensatniederschlagseinrichtung 120 in the "semi-active" embodiment according to 3B conceivable. This will be a first capacitor connection 166 of the heat exchanger 170 with a cold water connection 178 connected. The second capacitor connection 168 however, is preferably via a free outlet 180 (For example, via a freewheeling route) with a rinse tank 182 the dishwasher 110 connected. The inflow of fresh water via the cold water connection 178 in the heat exchanger 170 can be via a liquid valve 184 , For example, a solenoid valve to be controlled.

The rinse tank 182 is in this embodiment preferably designed as a two-level tank, with an upper level sensor 186 and a lower level sensor 188 , The rinse tank 182 is about a pump 190 and a piping system 192 with a spray system 194 connected to the loading of the items to be washed.

Furthermore, the dishwasher can 110 a controller 196 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 6 not shown) the controller 196 Information of the level sensors 186 . 188 ask, the pump can 190 control and can the liquid valve 184 and the fans 148 and or 126 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 112 with rinsing liquid from the rinsing tank 182 is rinsed. For example, while the level of Nachspülflüssigkeit in the final rinse tank 182 from the level of the upper level sensor 186 to the level of the lower level sensor 188 fall. Once this lower level is reached, the controller will start 196 the pump 190 preferably automatically stopped. During this rinse program step, the liquid valve is 184 preferably closed.

Subsequently, in a Absaugprogrammschritt the blower 148 are started and (at the same time or preferably only slightly delayed) the supply fan 126 , Furthermore, (also simultaneously or preferably only slightly delayed), the liquid valve 184 be opened. In this case, cooling water flows through the heat exchanger 170 , and a condensate deposit on the heat exchanger 170 may happen. This will remove from the rinsing chamber 112 sucked air 156 at least partially dehumidified, before it is released back into the environment.

"Consumed" cooling water, which after flowing through the heat exchanger 170 Heat from the steam from the rinsing chamber 112 has taken over the free outlet 180 the rinse tank 182 supplied, until that through the upper level sensor 186 defined upper level is reached again. Subsequently, the liquid valve 184 closed. A shutdown of the fan 148 (and possibly the Zuluftgebläses 126 ) and thus terminating the aspiration program step may be concurrent with this closing of the fluid valve 184 take place, or it may be preferred still a certain caster can be used, within which further air 156 from the rinsing chamber 112 is sucked.

110

dishwasher

112

rinsing chamber

114

casing

116

front flap

118

cover part

120

Condensation precipitation device

122

supply air duct

124

air intake opening

126

Supply fan

128

inflation opening

130

wash tank

132

inlet flap

134

chamber

136

inlet

138

outlet

140

capacitor element

142

cooling plates

144

condensation surfaces

146

flow channel

148

fan

150

condensate drain

152

Flow guide device

154

edge

156

exhaust air flow

158

outflow

160

spraying

162

openings

164

cooling coils

166

first capacitor terminal

168

second capacitor terminal

170

heat exchangers

172

Plate heat exchanger

174

engine

176

return

178

Cold water supply

180

free outlet

182

Rinse tank

184

liquid valve

186

upper level sensor

188

lower level sensor

190

pump

192

Piping

194

spray system

196

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 [0006, 0007]
• WO 2006/12062 A1 [0008]
• WO 2006/123947 A1 [0008]

Claims (24)

Dishwasher ( 110 ) for commercial use, comprising a rinsing chamber ( 112 ) with an openable front flap ( 116 ) for loading and unloading the rinsing chamber ( 112 ) with wash ware, furthermore comprising at least one condensate precipitation device ( 120 ), wherein the condensate precipitation device ( 120 ) with the rinsing chamber ( 112 ), wherein the condensate precipitation device ( 120 ) at least one blower ( 148 ) for sucking and / or blowing out steam and / or air from the closed rinsing chamber ( 112 ) and wherein the condensate precipitation device ( 120 ) at least one condensation surface ( 144 ) for condensing steam, characterized in that the dishwasher ( 110 ), a supply air duct ( 122 ) for supplying ambient air into the rinsing chamber ( 112 ), wherein the supply air duct ( 122 ) with a supply air blower ( 126 ) is provided. Dishwasher ( 110 ) according to the preceding claim, characterized in that the condensate precipitation device ( 120 ) in whole or in part in a cover part ( 118 ) of the rinsing chamber ( 112 ) is recorded. Dishwasher ( 110 ) according to one of the two preceding claims, characterized in that the condensate precipitation device ( 120 ) wholly or partly in a rear wall of the washing chamber ( 112 ) is recorded. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the dishwasher ( 110 ) is set up to blow the fan ( 148 ) and the supply air blower ( 126 ) operate synchronized in time, in particular at the same time and / or to start with a predetermined time offset. Dishwasher ( 110 ) according to the preceding claim, characterized in that the dishwasher ( 110 ) is arranged to the Zuluftgebläse ( 126 ) simultaneously with or ahead of the blower ( 148 ) to stop. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the supply air duct ( 122 ) at least partially in the region of the rear wall of the washing chamber ( 112 ) is arranged. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the supply air duct ( 122 ) an air inlet opening ( 124 ) to the working environment at the back and / or the top of the washing chamber ( 112 ) having. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the supply air duct ( 122 ) an injection opening ( 128 ) in the bottom area of the washing chamber ( 112 ). Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the supply air duct ( 122 ) a supply air valve ( 132 ), in particular a supply air flap. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that in the ceiling area of the washing chamber ( 112 ) at least one flow guide device ( 152 ), which is arranged to ensure a uniform flow through the rinsing chamber ( 112 ), wherein the flow guiding device ( 152 ), 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 ( 120 ) in such a way that at least a partial flow of the flushing chamber ( 112 ) sucked in air after flowing through the condensate precipitation device ( 120 ) back into the rinsing chamber ( 112 ) is returned. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the condensate precipitation device ( 120 ) at least one chamber ( 134 ) with at least one inlet ( 136 ) and at least one outlet ( 138 ) as well as at least one condensate drain ( 150 ) having. Dishwasher ( 110 ) according to the preceding claim, characterized in that the blower ( 148 ) with the inlet ( 136 ) and / or the outlet ( 138 ) connected is. Dishwasher ( 110 ) according to one of the two preceding claims, characterized in that the chamber ( 134 ) at least one flow channel ( 146 ) Are defined. Dishwasher ( 110 ) according to the preceding claim, characterized in that the blower ( 148 ) with the flow channel ( 146 ) connected is. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the condensate precipitation device ( 120 ) at least one of the following capacitor elements ( 140 ): - at least one cooling plate ( 142 ); - At least one sprayed by a cooling medium Cooling plate ( 142 ); At least one heat exchanger through which a cooling medium flows ( 170 ), in particular a plate heat exchanger ( 172 ) and / or a cooling coil heat exchanger ( 164 ). Dishwasher ( 110 ) according to the preceding claim, characterized in that the at least one capacitor element ( 140 ) has at least one of the following arrangements: - the at least one capacitor element ( 140 ) has a relation to the horizontal oblique orientation; The at least one capacitor element ( 140 ) has a lamellar arrangement; The at least one capacitor element ( 140 ) has a meandering arrangement; The at least one capacitor element ( 140 ) has a parallel arrangement of at least two capacitor elements ( 140 ) on. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the condensate precipitation device ( 120 ) at least one water-cooled capacitor element ( 140 ), wherein at least one first capacitor terminal ( 166 ) of the capacitor element ( 140 ) is connectable to a water supply, in particular a fresh water supply, and wherein at least one second capacitor connection ( 168 ) of the capacitor element ( 140 ) with a tank ( 182 ) of the dishwasher ( 110 ), in particular with a rinsing tank ( 182 ). Dishwasher ( 110 ) according to one of the preceding claims, characterized in that the dishwasher ( 110 ) is set up to carry out a rinsing program, wherein in at least one program step of the rinsing program the condensate precipitation device ( 120 ) is controlled to steam and / or air from the washing chamber ( 112 ). 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 ( 112 ) washed items with a rinse liquid from a rinse tank ( 182 ) is rinsed, wherein in a subsequent extraction program step cooling water in the Kondensatniederschlagseinrichtung ( 120 ) by steam and / or air from the rinsing chamber ( 112 ) is heated, wherein the heated cooling water in the rinse tank ( 182 ). Dishwasher ( 110 ) according to the preceding claim, characterized in that the rinsing tank ( 182 ) has a two-level control, wherein the Nachspülprogrammschritt is carried out until the level in the post-rinse tank has reached a lower level, and wherein the subsequent Absaugungsschrittschritt is carried out until the level in the final rinse tank has reached an upper level. Dishwasher ( 110 ) according to one of the preceding claims, characterized in that at least one liquid valve ( 184 ) is provided for the control of a supply of a cooling medium, wherein the dishwasher ( 110 ) is arranged to actuate the liquid valve ( 184 ) and the operation of the blower ( 148 ) 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 ( 184 ) and a start of the blower ( 148 ) can take place substantially at the same time.