CN119302578A - Commercial dishwasher with drying module, method for operating dishwasher - Google Patents
Commercial dishwasher with drying module, method for operating dishwasher Download PDFInfo
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- CN119302578A CN119302578A CN202410913869.9A CN202410913869A CN119302578A CN 119302578 A CN119302578 A CN 119302578A CN 202410913869 A CN202410913869 A CN 202410913869A CN 119302578 A CN119302578 A CN 119302578A
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- dishwasher
- drying
- air
- drying module
- housing
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- 238000001035 drying Methods 0.000 title claims abstract description 228
- 238000000034 method Methods 0.000 title claims description 34
- 238000004140 cleaning Methods 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 21
- 230000003213 activating effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000003134 recirculating effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 3
- 239000003570 air Substances 0.000 description 153
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 238000007605 air drying Methods 0.000 description 22
- 238000005406 washing Methods 0.000 description 21
- 238000004851 dishwashing Methods 0.000 description 5
- 239000012080 ambient air Substances 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 239000012459 cleaning agent Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
- A47L15/0081—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals with vertical sliding closing doors, e.g. hood-type dishwashers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
- A47L15/0034—Drying phases, including dripping-off phases
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/48—Drying arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/48—Drying arrangements
- A47L15/486—Blower arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/48—Drying arrangements
- A47L15/488—Connections of the tub with the ambient air, e.g. air intake or venting arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/10—Air circulation, e.g. air intake or venting arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/11—Air heaters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2601/00—Washing methods characterised by the use of a particular treatment
- A47L2601/02—Pressurised cleaning liquid delivered by a pump
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
一种商用洗碗机，其中洗碗机具有在竖直方向上能够在打开位置与关闭位置之间运动的罩盖，其中罩盖具有彼此相反的两个侧壁和将侧壁连接起来的前壁，其中在罩盖的关闭位置，罩盖的侧壁和前壁界定洗碗机的处理室，并且其中在罩盖的打开位置，罩盖的侧壁和前壁位于上壁和/或顶盖区域的上方，上壁和/或顶盖区域在上面界定处理室且与处理室的后壁固定连接，并且在罩盖的打开位置，罩盖的侧壁和前壁至少部分或局部地在侧向上界定间隙。根据本发明，尤其提出：洗碗机具有晾干模块，晾干模块布置在洗碗机的上壁区域上并且被实施成，使得晾干模块完全容纳在罩盖的打开位置下由罩盖的侧壁和前壁在侧向上界定的间隙空间内。
A commercial dishwasher, wherein the dishwasher has a cover that can be moved in the vertical direction between an open position and a closed position, wherein the cover has two side walls that are opposite to each other and a front wall that connects the side walls, wherein in the closed position of the cover, the side walls and the front wall of the cover delimit a treatment chamber of the dishwasher, and wherein in the open position of the cover, the side walls and the front wall of the cover are located above an upper wall and/or a cover area that delimits the treatment chamber above and is fixedly connected to a rear wall of the treatment chamber, and in the open position of the cover, the side walls and the front wall of the cover at least partially or partially laterally delimit a gap. According to the invention, it is particularly proposed that the dishwasher has a drying module that is arranged on the upper wall area of the dishwasher and is designed so that the drying module is completely accommodated in the gap space that is laterally delimited by the side walls and the front wall of the cover in the open position of the cover.
Description
The present invention relates generally to the field of industrial cleaning. In particular, the invention relates to a dishwasher, in particular a commercial dishwasher embodied as a dishwasher.
The cabinet type dishwasher is a dishwasher that can be manually assembled and disassembled. The tub dishwasher (also referred to as a "batch dishwasher") may be a cutlery basket slide dishwasher ("hood dishwasher") or a front loading type ("front loading dishwasher"). The front-loading dishwasher may be a counter-top machine, a counter-top machine or a stand-alone front-loading dishwasher.
A dishwasher designed as a dishwasher usually has a treatment chamber for cleaning items to be washed. Typically, a cleaning tank is arranged below the treatment chamber, into which liquid can flow back from the treatment chamber due to gravity. The cleaning tank has a cleaning liquid (usually water) therein, and a cleaning agent may be added to the cleaning liquid as necessary.
Furthermore, dishwashers designed as cabinet dishwashers generally have a washing system with a washing pump, a line system connected to the washing pump and a nozzle system with at least one washing nozzle. The cleaning liquid in the cleaning tank can be conveyed by the cleaning pump via the pipe system to the cleaning nozzle and sprayed by the cleaning nozzle in the treatment chamber onto the object to be cleaned. The sprayed cleaning liquid then flows back into the cleaning tank.
Such a dishwasher designed as a dishwasher is known, for example, from DE 10 2005 023 429A1.
The term "laundry" as used herein is to be understood in particular as tableware, cups, cutlery, cooking utensils, baking utensils and dishes.
Commercial dishwashers designed as cabinet dishwashers differ from domestic dishwashers in particular in that commercial dishwashers have to be designed such that, depending on the cleaning program selected, program operation times of between one and five minutes can be achieved, whereas domestic dishwashers generally have operation times of up to 2.5 hours or more. Because of the short duration of the program required in commercial dishwashers, the technology used in domestic dishwashers is often not easily transferred to commercial dishwashers.
Commercial dishwashers designed as cabinet dishwashers generally operate in two main process steps, a first step involving washing with a washing liquid and a second step involving rinsing with heated fresh water and dispensed rinse agent.
To be able to perform these process steps, commercial dishwashers designed as cabinet dishwashers are often equipped with two separate liquid systems which are completely separated from each other. One liquid system is the wash water circuit responsible for washing the items to be washed, wherein this washing is performed with recirculation water from the washing tub of the dishwasher. The other liquid system is the clean water system responsible for rinsing. Rinsing is performed with clear water, preferably with clear water from a water heater. The fresh water is also received by the washing tub of the dishwasher after spraying.
The main purpose of rinsing is to remove the alkali liquor remaining on the items to be washed. In addition, the rinse water flowing into the rinse tank in the rinse step is used for recycling the rinse water existing in the rinse tank.
The same amount of cleaning liquid as the fresh water is pumped out of the cleaning tank before the fresh water is sprayed as a rinsing liquid for rinsing and is thus led into the cleaning tank of the dishwasher.
Commercial dishwashers designed as cabinet dishwashers are often equipped with a plurality of programs. The main difference between these programs is that the program run times of the cleaning process are of different lengths. The operator may select a shorter cleaning program in the case of light soiling of the laundry or a correspondingly longer cleaning program in the case of heavy soiling of the laundry.
Commercial dishwashers designed as a cabinet dishwasher and designed for loading and unloading items to be washed in a batch manner in a treatment chamber, in particular front loading machines or basket-slide machines. In the case of a front loading machine, the items to be washed are placed in the basket, the basket loaded with the items to be washed is placed into the treatment chamber of the dishwasher through the front door and is taken out again through the front door after cleaning. In the case of basket-slide machines, the cutlery basket loaded with items to be washed is pushed manually into the treatment chamber from the input side and is removed manually from the treatment chamber from the output side after the end of the rinsing program. Front-loading and basket-slide machines contain only a single treatment chamber for treating the laundry. The front-loading machine may be a counter-top machine or a counter-top machine.
In commercial dishwashers designed as cabinet dishwashers, two drying methods are mainly used. In the first method, the laundry, which is still hot after the rinsing process is completed, is taken out of the machine and then dried in ambient air for four to ten minutes. In the above-described method, in order to dry the laundry, the laundry is generally left in the basket, and the laundry is placed in the basket to be cleaned in the dishwasher.
According to a second method, which can be used in commercial front-loading or under-counter dishwashers, air drying takes place in the treatment chamber of the dishwasher. Fresh air drying systems are used herein. Such fresh air drying systems for commercial front-loading or under-counter dishwashers always operate at high air volume flow rates in the range 25 to 100m 3 per hour, in order to be able to dry the items to be washed remaining in the treatment chamber in a very short time. The reason for the high air volume flow rate is the shorter drying process in the commercial field. The effective drying time for a commercial dishwasher is many times shorter than for a conventional household dishwasher. The airing program run airing time of the household dishwasher is about 30 minutes to 2.5 hours, whereas in commercial applications the airing program run airing time is between 1.5 and 5 minutes.
During air drying of commercial dishwashers designed as front-loading or under-counter dishwashers, fresh air is sucked in from the outside and passed through the treatment chamber of the dishwasher to absorb moisture from the items to be washed to be dried. Subsequently, the air dried with moisture is usually discharged as exhaust air into a space installed in the dishwasher.
However, such air drying in the treatment chamber of the dishwasher is unusual for hood dishwashers, since hood dishwashers are designed to open the hood and remove the items to be washed, which are normally contained in the washing basket, immediately after the end of the rinsing phase. The laundry may then be dried in ambient air according to a first drying method.
In particular, as the cleaning requirements for reusable items to be washed made of plastic are increasing, solutions are particularly sought for integrating the active drying function in the rinsing process of hood-type and/or general-purpose dishwashers, since items to be washed made of plastic have a poor self-drying effect due to the low heat capacity and therefore require an integration of the active drying step after the washing process.
The invention is based on the object, inter alia, of integrating a high-performance drying function into the installation space of a commercially available hood dish washer, so that no additional installation space is required for the drying function beyond the floor space of the machine.
This object is achieved in particular by the subject matter of patent independent claim 1, wherein advantageous developments of the solution according to the invention are given in the dependent patent claims.
The invention therefore relates in particular to a commercial dishwasher in the form of a hood dishwasher, in particular a hood-slide dishwasher, wherein the dishwasher has a hood that is movable, in particular linearly movable, in the vertical direction between an open position and a closed position. The cover has two side walls opposite each other and a front wall connecting the side walls. In the closed position of the cover, the side walls and the front wall of the cover at least partially or partly define a treatment chamber of the dishwasher. In the open position of the cover, the side walls and the front wall of the cover are located at least partially or partly above an upper wall and/or a roof region which delimits the treatment chamber above and is fixedly connected to the rear wall of the treatment chamber, and in the open position of the cover, the side walls and the front wall of the cover delimit a gap at least partially or partly.
The solution according to the invention is characterized in particular in that the dishwasher has an air-drying module which is arranged on a horizontal wall and/or a roof region of the dishwasher and which is embodied such that, in the open position of the cover, the air-drying module is completely accommodated in a gap delimited laterally by a side wall and a front side of the cover.
The advantages that can be obtained with the solution according to the invention are evident in that by providing such an airing module, the hood dish washing machine can also be equipped with a powerful airing function without increasing the construction space of the commercially available hood dish washing machine, since the airing module is fully integrated in the necessary construction space of the commercially available hood dish washing machine. In other words, although the airing module is arranged, no additional structural space is required to be added for the airing function outside the machine floor space.
Since the airing module is integrated in the vertical direction by utilizing the available structural space, the same installation area (footprint) of the machine can be achieved compared to a commercially available hood dish washer without an airing module.
On the other hand, the drying module ensures a higher drying performance, since the air circulation in the closed treatment chamber of the hood dish washing machine is performed with the drying module, and thus a very high circulation rate/air volume flow rate can be achieved without causing higher losses in the installation space.
In addition to this, a higher drying temperature can be set with the solution according to the invention, since the drying air circulates in the treatment chamber of the hood dish washer.
Preferably, the drying module is implemented such that the upper wall and/or the roof area of the drying module is at a vertical distance of at most 30cm, preferably at most 25cm and more preferably at most 20cm from the horizontal plane at which the side walls of the cover and/or the upper edge area of the front wall lie in the open position of the cover.
The upper wall and/or the roof area of the treatment chamber of the dishwasher of the invention defined above, and the rear wall of the treatment chamber, in particular, are fixedly connected to the frame or chassis of the dishwasher.
In particular, the air-drying module according to the invention has a housing and an air suction fan, in particular in the form of a radial fan or an axial fan, accommodated in the housing. In the housing, and preferably in the region of the upper wall and/or the top cover of the housing, a fresh air inlet is provided, via which fresh air can be sucked out of the installation space of the dishwasher and into the housing. A drying air outlet is also provided in the housing in fluid connection with the drying air inlet of the process chamber, via which fresh air sucked into the housing of the drying module by means of the suction fan can be supplied to the process chamber. In the state in which the drying module is mounted on the dishwasher, the drying air inlet of the treatment chamber corresponds here to the drying air outlet of the drying module.
In this embodiment variant, it is proposed in particular that the effective flow cross section of the fresh air inlet provided in the housing can be adjusted in a variable manner, in particular by means of a tuyere slide assigned to the fresh air inlet.
According to an implementation of the dishwasher according to the invention, the drying air inlet of the treatment chamber, which is in fluid connection with the drying air outlet of the drying module, is formed in an upper wall and/or a roof area of the treatment chamber, which upper wall and/or roof area delimits the treatment chamber above. However, other implementation variants are of course also conceivable here.
It is preferably proposed that the air nozzle system with a plurality of adjustable air nozzles is assigned to the air outlet of the air-drying module or to the air-drying air inlet of the treatment chamber, which is in fluid connection with the air-drying air outlet of the air-drying module, for respectively aligning the air-drying air to be introduced or already introduced into the treatment chamber with the laundry to be dried or treated.
According to an implementation of the dishwasher according to the invention, the dishwasher has at least one air outlet in order to provide pressure compensation in the treatment chamber when introducing the drying air into the treatment chamber. The air outlet is thus used in particular for the removal of the drying air introduced into the treatment chamber. In particular, it is proposed here that the at least one air outlet is formed at least partially or locally in an upper wall and/or ceiling region of the treatment chamber, which upper wall and/or ceiling region delimits the treatment chamber above.
According to a preferred implementation, the dishwasher has a first air outlet for leading out a first portion of the drying air which has been led into the treatment chamber, for example, into the installation space of the dishwasher, and a second air outlet for leading out a second portion of the drying air which has been led into the treatment chamber. The second air outlet is preferably in fluid connection with an air inlet formed in the housing of the drying module.
In this connection, it is conceivable that the dishwasher is assigned a heat exchanger system, to which at least a portion of the drying air which is led out via the first air outlet of the dishwasher can be supplied, in particular before the drying air is led out into the installation space of the dishwasher. In this regard, the discharge of the airing air into the installation space of the dishwasher does not negatively affect the indoor environment because the increase of the moisture content of the air (ambient air) in the installation space due to the blowing of the airing air containing moisture and the airing air hotter than the air in the installation space is prevented. In particular, by this measure, the risk of the moisture content of the air in the installation space increasing to such an extent that undesirable condensation of water vapor occurs, in particular at the cold interface in the installation space, can be prevented.
Furthermore, in the last-mentioned embodiment variant of the dishwasher according to the invention, it is proposed that the effective flow cross section of the first air outlet is preferably variably adjustable, in particular by means of a tuyere slide assigned to the first air outlet.
Alternatively or in addition thereto, the effective flow cross section of the second air outlet and/or of the air inlet of the drying module in fluid connection with the second air outlet can be variably adjusted, in particular by means of at least one tuyere slider.
According to an embodiment of the dishwasher according to the invention, it is proposed that the housing of the drying module is divided into a first region and a second region. The fresh air inlet of the drying module opens into the housing first region of the drying module at an air inlet in fluid connection with the second air outlet of the treatment chamber of the dishwasher. The air inlet of the process chamber opens into a second region of the housing of the air drying module.
In particular, it is proposed here that the suction side of the suction fan is in fluid connection with a first region of the housing of the drying module and that the pressure side of the suction fan is in fluid connection with a second region of the housing of the drying module.
A development of the last-mentioned embodiment variant of the dishwasher according to the invention provides that a heating device, which is particularly controllable or optionally switchable, is arranged in the second region of the housing of the drying module for heating the air supplied to the second region of the housing of the drying module via the suction fan, in particular as required.
The heating device has in particular at least one electrically operated heating element. In addition to the heating device of the drying module, the dishwasher has at least one further electrically operated heating device for heating the treatment liquid to be sprayed during operation of the dishwasher as required.
In this connection it is advantageous if control means are provided which are designed to control the power consumption of the heating means of the drying module in dependence on the power consumption of the above-mentioned further electrically operated heating means, in order to ensure that the total connection load of the dishwasher is not increased in comparison with commercially available hood dishwashers, despite the provision of the drying module.
Alternatively, the suction fan of the drying module may be assigned drying means for drying at least air supplied to the housing of the drying module via an air inlet in fluid connection with the second air outlet of the treatment chamber and/or fresh air sucked into the housing from the installation space of the dishwasher via a fresh air inlet.
According to another aspect of the invention, the dishwasher may have an air channel system by means of which at least a portion of the fresh air sucked into the housing of the drying module by means of the suction fan can be supplied to the treatment chamber. In particular, the air supply takes place here laterally or from below.
According to a further aspect of the invention, it is proposed that the dishwasher has a laundry detection device which is designed for detecting the type of laundry and in particular the material of the laundry contained in the treatment chamber of the dishwasher. The dishwasher further has a control device which is designed to set the temperature of the drying air supplied to the treatment chamber by the drying module, the amount of drying air supplied to the treatment chamber per unit time, the point in time for activating the drying module and/or the duration of activating the drying module in dependence on the type of laundry detected or in dependence on the material of the laundry accommodated in the treatment chamber of the dishwasher.
The invention also relates to a method for operating a dishwasher, wherein the dishwasher is a dishwasher of the type according to the invention described above. The method comprises the following steps:
(i) Loading the items to be cleaned into the treatment chamber of the dishwasher with the cover in its open position;
(ii) Switching the cover to its closed position;
(iii) Performing a cleaning process in which a cleaning liquid is sprayed onto the laundry in a recirculating manner, and
(Iv) A rinsing process is performed in which a rinsing liquid is sprayed onto the laundry.
In the method according to the invention, it is proposed in particular that, after the end of the rinsing process, the drying module is activated in order to expose the cleaned laundry in the closed treatment chamber to air, in particular heated drying air.
Alternatively or in addition, it is conceivable that the air-drying module is activated preferably for a maximum of 15 seconds between method step (iii) and method step (iv) in order to apply air to the cleaned laundry in a so-called drain phase between the cleaning phase and the rinsing phase.
The invention also relates to an air-drying module which is designed for fitting in particular on the upper wall and/or roof area of a commercial dishwasher which is embodied as a cabinet dishwasher. The commercial dishwasher may in particular be a hood dishwasher or a front-loading dishwasher. The drying module can be especially added to a dishwasher.
The air drying module has a housing and an air suction fan accommodated in the housing, in particular in the form of a radial fan or an axial fan. In the housing, and preferably in the upper wall and/or in the roof region of the housing of the drying module, a fresh air inlet is provided, via which fresh air can be sucked into the housing. An air-drying outlet is also provided in the housing, via which fresh air sucked into the housing of the air-drying module by means of the suction fan can be supplied to the treatment chamber of the dishwasher. In particular, it is proposed here that the effective flow cross section of the fresh air inlet provided in the housing can be adjusted in a variable manner, in particular by means of a tuyere slide assigned to the fresh air inlet.
According to a development of the drying module according to the invention, an air inlet is formed in the housing of the drying module, through which air can be supplied from the housing to the treatment chamber of the dishwasher. In this connection, it is proposed in particular that the effective flow cross section of the air inlet of the air drying module is preferably variably adjustable, in particular by means of at least one tuyere slide.
Preferably, the housing of the drying module is divided into a first region into which the fresh air inlet of the drying module and the air inlet of the drying module which can be brought into fluid connection with the treatment chamber of the dishwasher are introduced, and a second region which is open towards the drying air inlet of the treatment chamber. The suction side of the suction fan is in fluid connection with the first region and the pressure side of the suction fan is in fluid connection with the second region.
In the second region of the housing of the drying module, a heating device, which is particularly controllable or optionally switchable, is preferably arranged for heating the air supplied to the second region of the housing of the drying module via the suction fan, in particular as required.
Alternatively or in addition thereto, it is proposed that the suction fan of the drying module is assigned a drying device for drying at least the air supplied to the housing of the drying module via an air inlet which can be brought into fluid connection with the treatment chamber of the dishwasher.
Exemplary embodiments of a dishwasher according to the present invention will be described in more detail below with reference to the accompanying drawings.
In the drawings:
Fig. 1A shows schematically and in an isometric view an exemplary embodiment of a dishwasher according to the invention, more precisely a state in which the cover of the dishwasher is in its closed position;
FIG. 1B shows schematically and in a front side view an exemplary embodiment of a dishwasher according to the invention of FIG. 1A;
FIG. 1C shows schematically and in a side view an exemplary embodiment of a dishwasher according to the invention of FIG. 1A;
FIG. 1D shows schematically and in a top view an exemplary embodiment of a dishwasher according to the invention of FIG. 1A;
Fig. 2 shows schematically and in a cross-sectional view an exemplary embodiment of a dishwasher according to the invention of fig. 1C;
FIG. 3 shows schematically and in a cross-sectional view an exemplary embodiment of a dishwasher according to the invention of FIG. 1A;
fig. 4A shows schematically and in an isometric view an exemplary embodiment of a dishwasher according to the invention according to fig. 1A, more precisely a state in which the cover of the dishwasher is in its open position;
FIG. 4B schematically and in a front view shows an exemplary embodiment of a dishwasher according to the invention of FIG. 4A;
FIG. 4C shows schematically and in a side view an exemplary embodiment of a dishwasher according to the invention of FIG. 4A;
FIG. 4D shows schematically and in top view an exemplary embodiment of a dishwasher according to the invention of FIG. 4A;
FIG. 5 shows schematically and in a cross-sectional view an exemplary embodiment of a dishwasher according to the invention of FIG. 4C;
fig. 6 shows schematically and in a cross-sectional view an exemplary embodiment of a dishwasher according to the invention of fig. 4A.
The exemplary embodiment of the inventive dishwasher 1 shown in the drawings is embodied as a hood dishwasher, which can load and unload a washing basket by means of a hood 2. Here, the cover 2 can be pushed upward in the vertical direction by a handle.
Such a hood dish washer is designed for cleaning a large amount of laundry in as short a time as possible.
For example, in a Hopart (HOBART) company hood dish washer, the duration of a preset standard program for normally soiled laundry (e.g., dishes, bowls, porcelain cups, cups) is only about 70 seconds, i.e., a theoretical capacity of up to 52 cutlery baskets per hour.
The commercial dishwasher 1 is equipped almost without exception with a rotary washing and rinsing system. The cleaning and rinsing system is generally composed of a cleaning arm and a rinsing arm. Commercial dishwasher 1 of the type considered herein typically has upper and lower washing and rinsing systems.
In operation, soapy water (cleaning liquid) is supplied from the cleaning tank to the cleaning arm via the pipe system by means of a pump. Soapy water/cleaning liquid is applied to the items to be cleaned by the cleaning arm. In this case, dirt is removed from the laundry and carried into the soapy water. The soapy water then flows back into the washing tub of the dishwasher 1 via a screen system that traps coarse dirt residues.
Furthermore, a rinsing system is provided for delivering rinsing liquid via a rinsing line system to rinsing nozzles, which are directed to the area of the items to be cleaned in the treatment chamber 5 of the dishwasher 1, by means of a rinsing pump. The sprayed rinsing liquid falls from the treatment chamber 5 into the cleaning tank due to gravity. The rinse liquid line system connects the pressure side of the rinse pump with the rinse nozzle.
Before spraying the rinsing liquid during the rinsing phase, a quantity of cleaning liquid corresponding to the rinsing liquid is pumped out of the rinsing tank by means of a drain pump, the suction side of which is connected to the tank bottom of the rinsing tank via a drain line.
If the washing tank is empty before the hood dish washing machine is started for the first time, the washing tank must first be filled with clear water via a clear water line or with clear water or with other rinsing or cleaning liquids by means of the rinsing system and its rinsing pump.
The rinse solution may be clear water or clear water mixed with the rinse solution.
The cleaning liquid contains a cleaning agent which is preferably automatically dispensed by the cleaning agent dispensing device to the liquid contained in the cleaning tank.
As can be seen from the figures, the cover 2 of an exemplary embodiment of the dishwasher 1 according to the invention can be moved in the vertical direction between an open position and a closed position. Here, the cover 2 has two side walls 3 opposite to each other and a front wall 4 connecting the side walls 3. In the closed position of the cover 2, the side walls 3 and the front wall 4 of the cover 2 delimit at least partially or partly the treatment chamber 5 of the dishwasher 1.
On the other hand, in the open position of the cover 2, the side walls 3 and the front wall 4 of the cover 2 delimit a gap laterally at least partially or partly. In the open position of the cover 2, the side walls 3 and the front wall 4 of the cover 2 are at least partially or partly located above an upper wall and/or a roof region 6, which upper wall and/or roof region 6 delimits the treatment chamber 5 above and is fixedly connected to a rear wall 7 of the treatment chamber 5.
The airing module 8 is accommodated in a gap laterally delimited at least partially or partly by the side walls 3 and the front wall 4 of the cover 2 when the cover 2 is in its open position. The airing module 8 is implemented to be completely accommodated in the gap laterally delimited by the side walls 3 and the front wall 4 of the cover 2 when the cover 2 is in the open position.
As can be seen, for example, in the illustrations of fig. 4A to 4C, the drying module 8 is in particular embodied such that the upper wall and/or the roof region of the drying module 8 is at a vertical distance of at most 30cm from the horizontal plane in which the upper edge region of the side wall 3 or the front wall 4 of the cover 2 is located in the open position of the cover 2.
As can be seen in particular from the views according to fig. 2,3, 5 and 6, the upper wall and/or the roof region 6 on which the treatment chamber 5 of the dishwasher 1 is delimited and the rear wall 7 of the treatment chamber 5 are fixedly connected to the frame or chassis of the dishwasher 1.
The structure of the airing module 8 of an exemplary embodiment of the dishwasher 1 according to the present invention will be described in detail with reference to the drawings of fig. 2, 3,5 and 6 in particular.
In detail, the airing module 8 has a housing 9 and an air suction fan 10 accommodated in the housing 9. The suction fan 10 is in particular a radial fan or an axial fan.
In the housing 9, and preferably in the upper wall and/or in the top cover 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 space of the dishwasher 1 and into the housing 9 of the drying module 8.
Also provided in the housing 9 of the drying module 8 is a drying air outlet 12 in fluid connection with a drying air inlet 13 of the treatment chamber 5 of the dishwasher 1, via which fresh air sucked into the housing 9 of the drying module 8 by means of the suction fan 10 can be supplied to the treatment chamber 5.
In the embodiment shown in the drawings of the dishwasher 1 according to the invention, the drying air inlet 13 of the treatment chamber 5 corresponds here to the drying air outlet 12 of the drying module 8.
The effective flow cross section of the fresh air inlet 11 provided in the housing 9 of the drying module 8 can preferably be variably adjusted, in particular by means of a tuyere slide assigned to the fresh air inlet 11.
An air nozzle system 14 is assigned to the drying air outlet 12 of the drying module 8 or to the drying air inlet 13 of the treatment chamber 5, which is in fluid connection with the drying air outlet 12 of the drying module 8, and has a plurality of adjustable air nozzles via which the drying air to be introduced or already introduced into the treatment chamber 5 can be correspondingly directed.
The dishwasher 1 has a first air outlet 15 for leading at least a first portion of the drying air which has been introduced into the treatment chamber 5 out into the installation space of the dishwasher 1.
The dishwasher 1 further has a second air outlet 16 for letting out at least a second portion of the drying air which has been led into the treatment chamber 5, wherein the second air outlet 16 is in fluid connection with an air inlet 17 formed in the housing 9 of the drying module 8.
In the embodiment shown in the drawings, the second air outlet 16 of the treatment chamber 5 of the dishwasher 1 corresponds to an air inlet 17 formed in the housing 9 of the drying module 8.
Although not shown in the figures, it is in principle conceivable to assign the dishwasher 1 with a heat exchanger system, to which at least a portion of the drying air which is led out via the first air outlet 15 of the dishwasher 1 can be supplied, particularly preferably before the drying air is output into the installation space of the dishwasher 1.
In an exemplary embodiment of the dishwasher 1 according to the invention, the effective flow cross section of the first air outlet 15 is preferably variably adjustable, in particular by means of a tuyere slide assigned to the first air outlet 15.
In the same way, the effective flow area of the second air outlet 16 is preferably also variably adjustable, in particular likewise by means of a corresponding tuyere slide.
As can be seen in particular from the cross-sectional views according to fig. 2,3, 5 and 6, the housing 9 of the drying module 8 is divided into a first region 19 into which the fresh air inlet 11 of the drying module 8 and the air inlet 17 which is in fluid connection with the second air outlet 16 of the treatment chamber 5 open, and a second region 20 into which the drying air inlet 13 of the treatment chamber 5 opens, wherein the suction side of the suction fan 10 is in fluid connection with the first region 19 and the pressure side of the suction fan 10 is in fluid connection with the second region 20.
In the second region 20 of the housing 9 of the drying module 8, a heating device 21 is arranged, which is particularly controllable or optionally switchable, for heating the air supplied to the second region 20 of the housing 9 of the drying module 8 via the suction fan 10, in particular as required.
The invention also relates to the drying module 8 itself, i.e. without the corresponding dishwasher 1, wherein the drying module 8 can also preferably be subsequently connected to the dishwasher 1, so as to optimize the drying function of the dishwasher 1.
The air inlet and air outlet 11, 12, 17 of the drying module 8 or dishwasher 1 can be adjusted as required by means of corresponding adjustable slides in order to adjust the fresh air rate sucked in again from the ambient air in the installation space during the drying process, the circulation rate circulating in the circuit in the machine 1 during the drying process and/or the discharge rate output to the environment during the drying process.
This is necessary to ensure a certain pressure balance within the process chamber 5, since otherwise no sufficient fresh air can be inhaled from the environment.
Again, this is necessary to keep the relative air humidity of the air to be dried constant, i.e. during the drying process, the moisture absorbed from the air is partly discharged as exhaust gas from the treatment chamber 5 in order to replace it with fresh air having a lower relative air humidity and thereby accelerate the drying process.
The various aspects of the invention are summarized below in brief.
The dishwasher 1 according to the invention is a single tub (dish) dishwasher 1 or a tub dishwasher in the form of a hood or a universal dishwasher for washing different items to be washed.
It is proposed here in particular that:
a) Dishwasher 1 is equipped with an integrated drying system in the form of a drying module 8, and/or
B) The drying system/drying module 8 is integrated in the installation space of the dishwasher 1 so as not to change the floor space/installation area of the dishwasher 1, and/or
C) The drying system/drying module 8 is fixedly mounted in position on the fixed cover top (i.e. the upper wall and/or the top area 6) and thus does not have any negative influence on the opening and closing of the cover 2 due to the weight of the drying system, and/or
D) The hood roof (i.e. the upper wall and/or roof area 6) is fixedly connected to the machine rear wall or chassis of the dishwasher 1 in such a way that, when opening and closing the hood 2, only the two side walls 3 and the front wall 4 of the hood 2 move up and down, and/or
E) The overall structure of the drying system/drying module 8 is dimensioned in the vertical direction only to such an extent that the machine height is not increased in the case of an opened lid 2, i.e. there is no limitation on the space height of the installation space compared to a commercially available hood dish washer, and/or
F) The drying system/drying module 8 is equipped with a fan, for example in the form of a radial fan or an axial fan, for generating a very high air volume flow rate, so as to keep the required drying time as short as possible, and/or
G) The drying system/drying module 8 is provided with heating elements, for example in the form of heating coils, electrically heated, steam heated or hot water heated, for heating the drying air, and/or
H) The drying system/drying module 8 is equipped with a plurality of adjustable air nozzles, with which heated drying air can be applied in a targeted manner to the items to be washed in the treatment chamber 5, and/or
I) The drying system/drying module 8 is provided with a plurality of air openings (including adjustable tuyere slides) with which the fresh air rate, circulation rate and exhaust rate can be adjusted, and/or
J) The positioning and orientation of the air nozzles of the air nozzle system for flowing the drying air into the treatment chamber 5 are oriented with respect to the circulation opening and the exhaust opening such that a targeted drying air circulation movement is formed in the treatment chamber 5, which circulation movement can allow a targeted directing of the hot, dry drying air onto the items to be dried in a continuous loop and a subsequent directing of a part of the liquid-saturated exhaust air out into the environment via the exhaust opening in order thereby to keep the relative air humidity of the drying air constant during the drying process, and/or
K) Optionally, the exhaust gas is also directed through a heat exchanger to recover energy contained in the exhaust gas, and/or
L) the dishwasher 1 is equipped with means for detecting different types of items to be washed (e.g. dishes, cups, plastic trays, cutlery, cookware and utensils, reusable items to be washed made of plastic, etc.), and the drying parameters of the items to be dried (e.g. flow rate, temperature, drying time) can be automatically adjusted as desired, and/or
M) in the case of electric drying heating, the heating elements of the heating means of the drying module 8 of the drying device can be linked with the heating elements of the washing tank and/or the water heater, so that the total connection load of the machine is not increased compared to a commercially available hood dish washer, and/or
N) the drying system/drying module 8 can be optionally expanded by means of additional air channels, so that additional air nozzles can be installed laterally or underneath the laundry, thereby enabling direct air rushing from all directions to the laundry which is difficult to dry, and/or
O) the drying system/drying module 8 can optionally also be used as a blowing device (e.g. by increasing the rotational speed of the suction fan 10 as required) in order to blow away in a very short time, for example, a large residual water/water accumulation in a container-like object to be washed (e.g. a plastic cup with a raised bottom), since in this case drying by means of convection only, drying will be very time-consuming, and/or
P) optionally, the suction fan can also be activated for a few seconds during the drainage phase between washing and rinsing, in order thereby to blow off soapy water residues left on the items to be washed and thus to reduce the clean water requirement in the subsequent clean water rinsing, since less soapy water has to be rinsed off on the items to be washed by the clean water after rinsing, and/or
Q) the drying system/drying module 8 operates in combination with an additional commercial waste heat recovery system to thereby draw away moisture from the treatment chamber 5 at the beginning of the drying cycle (e.g., within the first 20 seconds of the drying cycle) and thereby reduce the relative air humidity at the beginning of the drying cycle, thereby allowing for a reduction in drying time, and/or
R) the drying system/drying module 8 can also be integrated in commercially available general-purpose dishwashers which are not equipped with the hood 2, but instead are equipped with only a front door. In this case too, the drying module 8 is fixed to the machine roof, however in this case only the front door is opened and closed for loading and unloading the dishwasher 1.
The present invention is not limited to the embodiments shown in the drawings, but follows from a review of all of the features disclosed herein.
List of reference numerals
1 Dish washer
2 Cover cap
3 Side wall of cover cap
4 Front wall of cover
5 Treatment chamber
6 Upper wall and/or roof area of dishwasher
7 Rear wall of the treatment Chamber
8 Airing module
9 Shell of drying module
10 Induced draft fan
11 Fresh air inlet
12 Airing air outlet
13 Air inlet for airing
14 Air nozzle system
15 First air outlet
16 Second air outlet
Air inlet of 17 airing module
First area of the housing of the 19-dryer module
20 Second region of the housing of the air drying module
21 Heating device
Claims (22)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023118436.9A DE102023118436B3 (en) | 2023-07-12 | 2023-07-12 | COMMERCIAL DISHWASHER WITH A DRYING MODULE, METHOD FOR OPERATING SUCH A DISHWASHER AND DRYING MODULE FOR A DISHWASHER |
| DE102023118436.9 | 2023-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119302578A true CN119302578A (en) | 2025-01-14 |
Family
ID=91331284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410913869.9A Pending CN119302578A (en) | 2023-07-12 | 2024-07-09 | Commercial dishwasher with drying module, method for operating dishwasher |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250017439A1 (en) |
| EP (1) | EP4491086A1 (en) |
| CN (1) | CN119302578A (en) |
| DE (1) | DE102023118436B3 (en) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2308340A1 (en) | 1975-04-21 | 1976-11-19 | Cidelcem | DISH DRYING DEVICE AFTER WASHING IN A WASHING MACHINE |
| DE8008403U1 (en) | 1980-03-27 | 1980-12-11 | Siegler, Peter Frhr. Von, 5340 Bad Honnef | SWEATER EXTRACTION DEVICE FOR DISHWASHER |
| GB2255623B (en) * | 1991-05-10 | 1995-06-07 | British Gas Plc | Drying apparatus |
| DE102005023429B4 (en) | 2005-05-20 | 2007-03-29 | Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware), Wilmington | Commercial dishwasher, in particular glasswasher |
| DE102007004599B4 (en) * | 2007-01-30 | 2008-12-24 | Meiko Maschinenbau Gmbh & Co.Kg | Hood dishwasher with condensate precipitation device |
| DE102007007133A1 (en) | 2007-02-13 | 2008-08-14 | Meiko Maschinenbau Gmbh & Co. Kg | Front-loading dishwasher with heat recovery |
| KR20090068078A (en) * | 2007-12-22 | 2009-06-25 | 송영일 | Dishwasher washing control method |
| ATE542466T1 (en) * | 2008-09-10 | 2012-02-15 | Bonferraro Spa | HOOD DISHWASHER WITH IMPROVED DRYING CIRCUIT |
| US8372214B2 (en) * | 2009-01-29 | 2013-02-12 | Insinger Machine Company | Vapor extractor for a warewasher |
| KR101704612B1 (en) | 2009-11-30 | 2017-02-08 | 삼성전자주식회사 | Dish washer and method for controlling the same |
| US8623150B2 (en) * | 2011-12-21 | 2014-01-07 | Champion Industries, Inc. | Batch dishware washing machine with steam venting |
| TR201721402A2 (en) | 2017-12-25 | 2019-07-22 | Arcelik As | DISHWASHER WITH HEAT PUMP |
| DE102018104009B4 (en) | 2018-02-22 | 2022-10-13 | Winterhalter Gastronom Gmbh | System and method for drying dishes |
| JP2021126458A (en) | 2020-02-17 | 2021-09-02 | パナソニックＩｐマネジメント株式会社 | Dishwasher |
| EP4147626B1 (en) * | 2021-09-02 | 2024-11-13 | Illinois Tool Works Inc. | Warewash machine with vapor extraction unit |
-
2023
- 2023-07-12 DE DE102023118436.9A patent/DE102023118436B3/en active Active
-
2024
- 2024-05-29 EP EP24178785.2A patent/EP4491086A1/en active Pending
- 2024-07-05 US US18/764,957 patent/US20250017439A1/en active Pending
- 2024-07-09 CN CN202410913869.9A patent/CN119302578A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250017439A1 (en) | 2025-01-16 |
| EP4491086A1 (en) | 2025-01-15 |
| DE102023118436B3 (en) | 2024-09-12 |
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