COMMERCIAL DISHWASHER WITH A DRYING MODULE, METHOD FOR OPERATING SUCH A DISHWASHER, AND DRYING MODULE FOR A DISHWASHER

Abstract

A commercial dishwasher includes a hood movable in a vertical direction between an open position and a closed position. The hood includes two opposing side walls and a front wall connecting the side walls. In the closed position, the side walls and the front wall bound a treatment chamber. In the open position, the side walls and the front wall are present above an upper wall and/or ceiling region, which bounds the treatment chamber upwardly and is fixedly connected to a rear wall of the treatment chamber, and there laterally bound a clear space at least partially or in regions. The dishwasher includes a drying module, which is arranged on the upper wall region of the dishwasher and is configured such that it is completely accommodated in the clear space, which is, in the open position of the hood, laterally bounded by the side walls and the front wall.

Claims

1. A commercial dishwasher in the form of a hood-type dishwasher, wherein the dishwasher comprises a hood that is movable in a vertical direction between an open position and a closed position, in a linearly sliding manner, wherein the hood comprises two opposing side walls and a front wall connecting the side walls, wherein, in the closed position of the hood, the side walls and the front wall of the hood at least partially or in regions bound a treatment chamber of the dishwasher, and wherein, in the open position of the hood, the side walls and the front wall of the hood are present at least partially or in regions above an upper wall and/or ceiling region, which bounds the treatment chamber upwardly and is fixedly connected to a rear wall of the treatment chamber, and there laterally bound a clear space at least partially or in regions, wherein the dishwasher comprises a drying module, which is arranged on the upper wall and/or ceiling region of the dishwasher and is configured such that it is completely accommodated in the clear space, which is, in the open position of the hood, laterally bounded by the side walls and the front wall of the hood.

2. The dishwasher according to claim 1, wherein the drying module is arranged such that an upper wall region of the drying module lies in a horizontal plane, which is spaced apart from the horizontal plane by a maximum of 30 cm in which horizontal plane, in the open position of the hood, there lies an upper edge region of the side walls and/or the front wall of the hood.

3. The dishwasher according to claim 1, wherein the upper wall and/or ceiling region bounding the treatment chamber upwardly and the rear wall of the treatment chamber are fixedly connected to a machine frame or a base frame of the dishwasher.

4. The dishwasher according to claim 1, wherein the drying module comprises a housing and a suction fan accommodated in the housing, wherein a fresh air inlet is provided in the housing via which fresh air can be sucked into the housing from the installation room of the dishwasher, wherein a drying air outlet, which is in fluid communication with a drying air inlet of the treatment chamber, is further provided in the housing, via which the fresh air sucked into the housing of the drying module with the aid of the suction fan can be supplied to the treatment chamber, wherein the drying air inlet of the treatment chamber matches the drying air outlet of the drying module.

5. The dishwasher according to claim 4, wherein an effective flow cross-section of the fresh air inlet provided in the housing is variably adjustable, with the aid of a ventilation slider associated with the fresh air inlet.

6. The dishwasher according to claim 4, wherein the drying air inlet of the treatment chamber in fluid communication with the drying air outlet of the drying module is formed in the upper wall and/or ceiling region of the treatment chamber bounding the treatment chamber upwardly.

7. The dishwasher according to claim 4, wherein the drying air outlet of the drying module or the drying air inlet of the treatment chamber in fluid communication with the drying air outlet of the drying module is associated with an air nozzle system having a plurality of adjustable air nozzles for orienting the drying air to be introduced into the treatment chamber.

8. The dishwasher according to claim 4, wherein the dishwasher comprises at least one air outlet for discharging the drying air introduced into the treatment chamber, wherein the at least one air outlet is formed at least partially or in regions in the upper wall and/or ceiling region of the treatment chamber delimiting the treatment chamber upwardly.

9. The dishwasher according to claim 8, wherein the dishwasher comprises a first air outlet for discharging at least a first portion of the drying air introduced into the treatment chamber into the installation room of the dishwasher, and wherein the dishwasher comprises a second air outlet for discharging at least a second portion of the drying air introduced into the treatment chamber, wherein the second air outlet is in fluid communication with an air inlet formed in the housing of the drying module.

10. The dishwasher according to claim 9, wherein the dishwasher is associated with a heat exchange system, to which at least a portion of the drying air discharged via the first air outlet of the dishwasher is supplied, before the drying air is output into the installation room of the dishwasher.

11. The dishwasher according to claim 9, wherein an effective flow cross-section of the first air outlet is variably adjustable, with the aid of a ventilation slider associated with the first air outlet; and/or wherein an effective flow cross-section of the second air outlet and/or an effective flow cross-section of the air inlet of the drying module in fluid communication with the second air outlet is/are variably adjustable, with the aid of at least one ventilation slider.

12. The dishwasher according to claim 9, wherein the housing of the drying module is divided into a first region, in which opens the fresh air inlet of the drying module and the air inlet in fluid communication with the second air outlet of the treatment chamber, and a second region, in which opens the drying air inlet of the treatment chamber, wherein the suction side of the suction fan is in fluid communication with the first region and the pressure side of the suction fan with the second region.

13. The dishwasher according to claim 12, wherein, in the second region of the housing of the drying module, a controllable or optionally switchable heating device is arranged for heating, as needed, of the air supplied via the suction fan to the second region of the housing of the drying module.

14. The dishwasher according to claim 13, wherein the heating device of the drying module comprises at least one electrically operated heating element, wherein the dishwasher further comprises at least one further electrically operated heating device for as-needed heating of the treatment liquid to be sprayed during operation of the dishwasher, and wherein a control device is provided, which is configured so as to control the electrical power consumption of the heating device of the drying module as a function of an electrical power consumption of the further electrically operated heating device.

15. The dishwasher according to claim 9, wherein the suction fan of the drying module is associated with a drying device for drying at least the air supplied to the housing of the drying module via the air inlet in fluid communication with the second air outlet of the treatment chamber and/or the fresh air sucked into the housing from the installation space of the dishwasher via the fresh air inlet.

16. The dishwasher according to claim 4, wherein the dishwasher comprises an air channel system, via which at least a portion of the fresh air sucked into the housing of the drying module with the aid of the suction fan can be supplied to the treatment chamber, laterally and/or from below.

17. The dishwasher according to claim 1, wherein the dishwasher comprises a washware detection device, which is configured so as to detect the type of washware received in the treatment chamber of the dishwasher, wherein the dishwasher further comprises a control device, which is configured so as to control the drying module as a function of the type of the washware detected, and in particular to adjust a temperature of the drying air supplied to the treatment chamber by the drying module, an amount of drying air supplied to the treatment chamber per unit of time, a timepoint for the activation of the drying module, and/or a duration of the activation of the drying module, all of the above as a function of the type of washware detected.

18. A method for operating a dishwasher, wherein the dishwasher is a dishwasher according to claim 1, and wherein the method comprises the following method steps: (i) loading the treatment chamber of the dishwasher with washware to be cleaned, namely while the hood is in its open position; (ii) transferring the hood into its closed position; (iii) performing a washing process in which washing liquid is sprayed onto the washware in a recirculating manner; and (iv) performing a rinsing process in which rinsing liquid is sprayed onto the washware, wherein, upon completion of the rinsing process, the drying module is activated in order to expose the cleaned washware to heated drying air, within the closed treatment chamber.

19. The method according to claim 18, wherein, between the method step (iii) and the method step (iv), the drying module is activated for up to 15 seconds in order to expose the washed washware to air.

20. A drying module, which is configured so as to be mounted on an upper wall and/or ceiling region of a commercial dishwasher embodied as a batch-type dishwasher, wherein the drying module comprises a housing and a suction fan accommodated in the housing, wherein a fresh air inlet is provided in the housing via which fresh air can be sucked into the housing, wherein a drying air outlet is further provided in the housing, via which the fresh air sucked into the housing of the drying module by means of the suction fan can be supplied to the treatment chamber of a dishwasher, wherein an effective flow cross-section of the fresh air inlet provided in the housing is variably adjustable, with the aid of a ventilation slider associated with the fresh air inlet.

21. The drying module according to claim 20, wherein an air outlet is configured in the housing of the drying module, via which air from the housing can be supplied to the treatment chamber of the dishwasher, wherein an effective flow cross-section of the air outlet of the drying module is variable adjustable, with the aid of a ventilation slider.

22. The drying module according to claim 21, wherein the housing of the drying module is divided into a first region, into which opens the fresh air inlet of the drying module and an air inlet that can be brought into fluid communication with the treatment chamber of the dishwasher, and a second region, in which the drying air outlet is provided, wherein the suction side of the suction fan is in fluid communication with the first region of the housing of the drying module and the pressure side of the suction fan is in fluid communication with the second region of the housing of the drying module, wherein, in the second region of the housing of the drying module, a controllable or optionally switchable heating device is arranged for heating, as needed, of the air supplied via the suction fan to the second region of the housing of the drying module; and/or wherein a drying device is associated with the suction fan of the drying module for drying at least the air supplied to the housing of the drying module via the air inlet that can be brought into fluid communication with the treatment chamber of the dishwasher.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0058] An exemplary embodiment of the dishwasher according to the invention is described in further detail below, with reference to the accompanying drawings.

[0059] The following are shown:

[0060] FIG. 1A shows schematically and in an isometric view, the exemplary embodiment of the dishwasher according to the invention, namely in a state in which the hood of the dishwasher is in its closed position;

[0061] FIG. 1B shows schematically and in a view of the front side of the exemplary embodiment of the dishwasher according to the invention according to FIG. 1A;

[0062] FIG. 1C shows schematically and in a side view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 1A;

[0063] FIG. 1D shows schematically and in a plan view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 1A;

[0064] FIG. 2 shows schematically and in a sectional view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 1C;

[0065] FIG. 3 shows schematically and in a sectional view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 1A;

[0066] FIG. 4A shows schematically and in an isometric view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 1A, namely in a state in which the hood of the dishwasher is in its open position;

[0067] FIG. 4B shows schematically and in a front view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 4A;

[0068] FIG. 4C shows schematically and in a side view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 4A;

[0069] FIG. 4D shows schematically and in a plan view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 4A;

[0070] FIG. 5 shows schematically and in a sectional view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 4C;

[0071] FIG. 6 shows schematically and in a sectional view, the exemplary embodiment of the dishwasher according to the invention according to FIG. 4A.

DETAILED DESCRIPTION

[0072] The exemplary embodiment of the dishwasher 1 according to the invention shown in the drawings is designed as a hood-type dishwasher, which can be loaded and unloaded with a washing basket via a hood 2. The hood 2 can be pushed upward in the vertical direction via a handle.

[0073] Such hood-type dishwashers are designed for cleaning large quantities of washware in as short a time as possible.

[0074] For example, in a hood-type dishwasher from the company HOBART, the duration of the preset standard program, which is typically used for normally soiled washware such as plates, bowls, cups, and glasses, is only about 70 seconds, i.e., the theoretical capacity is up to 52 baskets per hour.

[0075] Almost without exception, commercial-grade dishwashers 1 are equipped with rotating washing-and-rinsing systems. A washing-and-rinsing system typically consists of a washing arm and a rinsing arm. A commercial-grade dishwasher 1 of the type considered herein typically comprises an upper as well as a lower washing-and-rinsing system.

[0076] During operation, the soap water (washing liquid) is supplied from the washing tank to the washing arms via a pipe system using a pump. The washing arms are used in order to apply the soap water/washing liquid to the washware to be cleaned. The dirt is removed from the washware and integrated into the soap water. The soap water then flows back into the washing tank of the dishwasher 1 via a screen system that retains coarse dirt residues.

[0077] Further, a rinsing system is provided for conveying rinsing liquid by means of a rinsing pump through a rinse line system to rinsing nozzles, which are directed towards the region of the washware to be cleaned in the treatment chamber 5 of the dishwasher 1. The sprayed rinsing liquid falls from the treatment chamber 5 into the washing tank by gravity. The rinsing liquid line system connects the pressure side of the rinsing pump to the rinsing nozzles.

[0078] Before spraying rinsing liquid during the rinsing phase, an amount of the washing liquid corresponding to the rinsing liquid is pumped from the washing tank by means of a drain pump, whose suction side is connected via a drain line into a sump of the washing tank.

[0079] If the washing tank is empty before a first start of the hood-type dishwasher, it must first be filled with fresh water via a fresh water line or by means of the rinsing system and its rinsing pump with fresh water or another rinsing liquid or washing liquid.

[0080] The rinsing liquid can be fresh water or fresh water mixed with rinse aid.

[0081] The washing liquid contains cleaner, which is preferably automatically added to the liquid contained in the washing tank by a cleaner dosing apparatus.

[0082] As can be seen in the drawings, the hood 2 of the exemplary embodiment of the dishwasher 1 according to the invention is movable vertically between an open position and a closed position. The hood 2 comprises two opposing side walls 3 and a front wall 4 on the front side connecting the side walls 3. In the closed position of the hood 2, the side walls 3 and the front wall 4 of the hood 2 at least partially or regionally bound the treatment chamber 5 of the dishwasher 1.

[0083] In the open position of the hood 2, on the other hand, the side walls 3 and the front wall 4 of the hood 2 at least partially or regionally laterally bound a clearance. In the open position of the hood 2, the side walls 3 and the front wall 4 of the hood 2 lie at least partially or regionally above an upper wall and/or ceiling region 6, which bounds the treatment chamber 5 upwardly and is fixedly connected to a rear wall 7 of the treatment chamber 5.

[0084] In the clearance, which is laterally bounded at least partially or regionally by the side walls 3 and the front wall 4 of the hood 2 when the hood 2 is in its open position, a drying module 8 is accommodated. The drying module 8 is arranged such that, in the open position of the hood 2, it is completely accommodated in the clearance that is laterally bounded by the side walls 3 and the front wall 4 of the hood 2.

[0085] For example, as illustrated in FIG. 4A to FIG. 4C, the drying module 8 is designed in particular such that an upper wall and/or ceiling region of the drying module 8 lies in a horizontal plane, which is spaced vertically by a maximum of 30 cm from the horizontal plane, in which, in the open position of the hood 2, an upper edge region of the side walls 3 and the front wall 4 of the hood 2 lies.

[0086] According to the views in FIG. 2, FIG. 3, FIG. 5, and FIG. 6, it can be seen in particular that the upper wall and/or ceiling region 6 bounding the treatment chamber 5 of the dishwasher 1 upwardly and the rear wall 7 of the treatment chamber 5 are fixedly connected to a machine frame or a base frame of the dishwasher 1.

[0087] In particular, with reference to the illustrations in FIG. 2, FIG. 3, FIG. 5, and FIG. 6, the construction of the drying module 8 of the exemplary embodiment of the dishwasher 1 according to the invention will be described in further detail below.

[0088] In detail, the drying module 8 comprises a housing 9 and a suction fan 10 accommodated with the housing 9. The suction fan 10 is in particular a radial or axial fan.

[0089] In the housing 9, and preferably in the upper wall and/or ceiling region of the housing 9 of the drying module 8, a fresh air inlet 11 is provided, via which fresh air can be drawn out of the installation room of the dishwasher 1 and into the housing 9 of the drying module 8.

[0090] In the housing 9 of the drying module 8, a drying air outlet 12 is provided, which is fluidly connected to a drying air inlet 13 of the treatment chamber 5 of the dishwasher 1, via which outlet the fresh air sucked into the housing 9 of the drying module 8 can be supplied to the treatment chamber 5 by means of the suction fan 10.

[0091] In the embodiment of the dishwasher 1 according to the invention as shown in the drawings, the drying air inlet 13 of the treatment chamber 5 corresponds to the drying air outlet 12 of the drying module 8.

[0092] An effective flow cross-section of the fresh air inlet 11 provided in the housing 9 of the drying module 8 is preferably variably adjustable, namely with the aid of a ventilation slider associated with the fresh air inlet 11.

[0093] The drying air outlet 12 of the drying module 8 or the drying air inlet 13 of the treatment chamber 5 fluidly connected to the drying air outlet 12 of the drying module 8 is associated with an air nozzle system 14 having a plurality of adjustable air nozzles, via which the drying air introduced or to be introduced into the treatment chamber 5 can be oriented accordingly.

[0094] The dishwasher 1 comprises a first air outlet 15 for discharging at least a first portion of the drying air introduced in the treatment chamber 5 into the installation room of the dishwasher 1.

[0095] The dishwasher 1 further comprises a second air outlet 16 for discharging at least a second portion of the drying air introduced in the treatment chamber 5, wherein the second air outlet 16 is fluidly connected to an air inlet 17 configured in the housing 9 of the drying module 8.

[0096] In the embodiment shown in the drawings, the second air outlet 16 of the treatment chamber 5 of the dishwasher 1 corresponds to the air inlet 17 configured in the housing 9 of the drying module 8.

[0097] Although not shown in the drawings, it is conceivable in principle that the dishwasher 1 is associated with a heat exchange system, to which at least a portion of the drying air discharged via the first air outlet 15 of the dishwasher 1 is supplied, preferably before the drying air is output into the installation room of the dishwasher 1.

[0098] In the exemplary embodiment of the dishwasher 1 according to the invention, an effective flow cross-section of the first air outlet 15 is preferably variably adjustable, in particular with the aid of a ventilation slider 15 associated with the first air outlet.

[0099] Likewise, an effective flow region of the second air outlet 16 is also preferably variably adjustable, namely likewise with the aid of a corresponding ventilation slider.

[0100] From the sectional views according to FIG. 2, FIG. 3, FIG. 5, and FIG. 6, it can be seen in particular that the housing 9 of the drying module 8 is divided into a first region 19, in which opens the fresh air inlet 11 of the drying module 8 and the air inlet 17 fluidly connected to the second air outlet 16 of the treatment chamber 5, and a second region 20, in which opens the drying air inlet 13 of the treatment chamber 5, wherein the suction side of the suction fan 10 is fluidly connected to the first region 19 and the pressure side of the suction fan 10 with the second region 20.

[0101] In the second region 20 of the housing 9 of the drying module 8, an in particular controllable or optionally switchable heating device 21 is arranged for heating, in particular as needed, of the air supplied via the suction fan 10 to the second region 20 of the housing 9 of the drying module 8.

[0102] The invention further relates to the drying module 8 per se, i.e., without a corresponding dishwasher 1, wherein the drying module 8 can also be connected to a dishwasher 1 subsequently in order to thus optimize the drying function of the dishwasher 1.

[0103] The air inlets and outlets 11, 12, 17 of the drying module 8 and the dishwasher 1, respectively, are adjustable via corresponding adjustable sliders as needed in order to adjust the following: the rate of fresh air that is newly drawn from the ambient air in the installation room during the drying process; a rate of circulation that is circulated within the machine 1 during the drying process; and/or a rate of discharge that is discharged to the environment during the drying process.

[0104] This is necessary in order to ensure a type of pressure compensation within the treatment chamber 5, because otherwise not enough fresh air can be drawn in from the environment.

[0105] This is also necessary in order to keep the relative humidity of the drying air constant, i.e., the moisture absorbed by the air during the drying process is partially discharged from the treatment chamber 5 as exhaust air in order to replace it with fresh air having a lower relative humidity and thereby accelerating the drying process.

[0106] Aspects of the invention are briefly summarized below.

[0107] The dishwasher 1 according to the invention is a single-tank (tableware) dishwasher 1 or a box-type dishwasher in the form of a hood-type or universal dishwasher for washing various washware.

[0108] In particular, it is provided that: [0109] a) the dishwasher 1 is equipped with an integrated drying system in the form of a drying module 8; and/or [0110] b) the drying system/drying module 8 is integrated into the design space of the dishwasher 1 such that the base surface/set-up surface of the dishwasher 1 is not changed; and/or [0111] c) the drying system/drying module 8 is mounted in a positionally fixed manner on the fixed hood cover (i.e., the upper wall and/or ceiling region 6), and this does not result in any negative effects due to the weight of the drying system for opening and closing the hood 2; and/or [0112] d) the hood cover (i.e., the upper wall and/or ceiling region 6) is connected to the machine rear wall or the base frame of the dishwasher 1 in a positionally fixed manner, so that only the two side walls 3 and the front wall 4 of the hood 2 move upwards and downwards when the hood 2 is opened and closed; and/or [0113] e) the overall construction of the drying system/drying module 8 in the vertical direction is only so large that there is no increase in the machine height when the hood 2 is opened, i.e., there is no restriction on room height of the installation room compared to a market-typical hood-type dishwasher; and/or [0114] f) the drying system/drying module 8 is equipped with a fan, e.g., in the form of a radial or axial fan, so as to generate a very high air flow rate in order to keep the required drying time as short as possible; and/or [0115] g) the drying system/drying module 8 is equipped with heating elements, e.g., in the form of electrical, steam-heated, or hot-water-heated heating coils for heating the drying air; and/or [0116] h) the drying system/drying module 8 is equipped with a plurality of adjustable air nozzles, with which the heated drying air can be applied to the washware in the treatment chamber 5 in a targeted manner; and/or [0117] i) the drying system/drying module 8 is equipped with a plurality of air openings including adjustable ventilation sliders with which the fresh air, circulation, and discharge rates can be adjusted; and/or [0118] j) the positioning and orientation of the air nozzles of the air nozzle system for introducing the drying air into the treatment chamber 5 is oriented, in comparison to the circulation and exhaust air opening, such that a targeted circulation of the drying air is established within the treatment chamber 5, which allows the warm, dry drying air to be guided over the washware in a targeted manner in a continuous circuit, and thereafter to discharge a portion of the exhaust air saturated with liquid to the environment via the exhaust opening, in order to thereby keep the relative humidity of the drying air constant during the drying process; and/or [0119] k) the exhaust air is optionally additionally guided over a heat exchanger in order to reclaim the energy contained in the exhaust air; and/or [0120] l) the dishwasher 1 is equipped with a device for detecting different types of washware, e.g., plates, glasses, plastic trays, cutlery, pots and utensils, reusable plastic washware, etc., and the drying parameters, e.g., flow rate, temperature, and drying time, can be automatically adjusted for the washware to be dried; and/or [0121] m) in the case of electric drying heaters, the heating elements of the heating device of the drying module 8 of the drying are lockable with the heating elements of the washing tank and/or the boiler so as not to increase the overall connected load of the machine compared to a market-typical hood-type dishwasher; and/or [0122] n) the drying system/drying module 8 can optionally be extended by means of additional air channels such that additional air nozzles can be mounted laterally or below the washware in order to realize a direct striking of difficult-to-dry washware from all sides; and/or [0123] o) the drying system/drying module 8 can optionally also be used as a blow-out device (e.g., by increasing the speed of the suction fan 10 as needed) in order to blow out larger water residues/water accumulations, e.g., in the case of dipping washware, e.g., plastic cups with a bulge in the cup bottom, in a very short time, because drying only by means of convection drying in this case would be very time-consuming; and/or [0124] p) the suction fan 10 can optionally also be actuated in the drip-off phase between water and rinsing for a few seconds in order to thereby blow off soap residues remaining on the washware and thereby reduce the fresh water demand during the subsequent fresh water rinsing, because less soap remains on the washware that must be rinsed off by the fresh water post-rinsing; and/or [0125] q) the drying system/drying module 8 is operated in combination with an additional commercially available exhaust air heat recovery system in order to thereby suck up the vapor within the treatment chamber 5 at the start of the drying cycle (e.g., within the first 20 seconds of the drying cycle) and thereby reduce the relative humidity at the start of the drying cycle so as to thereby be able to reduce the drying time; and/or [0126] r) the drying system/drying module 8 can also be integrated with market-typical universal dishwashers, which are not equipped with a hood 2, but alternatively only with a front door. In this case, the drying module 8 also sits fixed on the machine cover, however, only one front door is opened and closed for loading and unloading the dishwasher 1.

[0127] The invention is not limited to the embodiments shown in the drawings, but rather results when all of the features disclosed herein are considered together.

LIST OF REFERENCE NUMERALS

[0128] 1 Dishwasher [0129] 2 Hood [0130] 3 Side wall of the hood [0131] 4 Front wall of the hood [0132] 5 Treatment chamber [0133] 6 Upper wall and/or ceiling region of the dishwasher [0134] 7 Rear wall of the treatment chamber [0135] 8 Drying module [0136] 9 Housing of the drying module [0137] 10 Suction fan [0138] 11 Fresh air inlet [0139] 12 Drying air outlet [0140] 13 Drying air inlet [0141] 14 Air nozzle system [0142] 15 First air outlet [0143] 16 Second air outlet [0144] 17 Air inlet of the drying module [0145] 19 First region of the housing of the drying module [0146] 20 Second region of the housing of the drying module [0147] 21 Heating device