EP1997419B1 - Lave-vaisselle à changement d'eau - Google Patents

Lave-vaisselle à changement d'eau Download PDF

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Publication number
EP1997419B1
EP1997419B1 EP08006161A EP08006161A EP1997419B1 EP 1997419 B1 EP1997419 B1 EP 1997419B1 EP 08006161 A EP08006161 A EP 08006161A EP 08006161 A EP08006161 A EP 08006161A EP 1997419 B1 EP1997419 B1 EP 1997419B1
Authority
EP
European Patent Office
Prior art keywords
tank
wash
washing
final
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08006161A
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German (de)
English (en)
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EP1997419A1 (fr
Inventor
Karl Hildenbrand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meiko Maschinenbau GmbH and Co KG
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Meiko Maschinenbau GmbH and Co KG
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Filing date
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Publication of EP1997419A1 publication Critical patent/EP1997419A1/fr
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Publication of EP1997419B1 publication Critical patent/EP1997419B1/fr
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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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • 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
    • A47L15/0063—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control using remote monitoring or controlling of the dishwasher operation, e.g. networking systems
    • 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
    • A47L15/0078—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 a plurality of fluid recirculation arrangements, e.g. with separated washing liquid and rinsing liquid recirculation circuits
    • 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
    • A47L15/4285—Water-heater 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/02—Pressurised cleaning liquid delivered by a pump

Definitions

  • the invention relates to a method for operating a commercial dishwasher. Furthermore, the invention relates to a dishwasher for commercial use, which may be particularly adapted to perform the inventive method in one of its embodiments.
  • Dishwashers for cleaning items of various types in various embodiments are known from the prior art.
  • “items to be washed” are essentially utensils that come into direct or indirect contact with foods, such as, for example, plates, cutlery, cups, trays, glasses, bowls, pots or the like.
  • the term “items to be washed” can also encompass other types of items to be washed, for example items to be washed from the field of chemical engineering, mechanical engineering or the like.
  • dishwashers for commercial use Known from the prior art and commercially available in various embodiments are dishwashers for commercial use and dishwashers for domestic use. These two types of dishwashers essentially differ in that, in contrast to domestic appliances, commercial dishwashers are optimized for high throughput. While domestic dishwashers for this purpose essentially work with a single tank connected to a wash chamber, which is used successively for the individual wash steps, this principle is due to the high time required for the respective filling and heating for commercial dishwashers usually not applicable.
  • commercial dishwashers therefore generally have at least two tanks, so that in particular the time-consuming heating steps can be carried out in parallel.
  • commercial dishwashers comprise at least one tank connected to the rinsing chamber, and additionally at least one rinsing tank, which is generally designed as a boiler.
  • a water heater can be used.
  • Commercial dishwashers are known in the art as continuous dishwashing machines (for example, as belt conveyors or basket transport dishwashing machines) or as single chamber dishwashers having a single chamber for receiving the dishes. The following invention relates essentially to single-chamber dishwashers.
  • One of these single chamber dishwashers is off WO 2005/055798 A known.
  • a basic idea of the present invention is thereby to optimize the resources available in conventional dishwashers and to shorten the time until the operational readiness is achieved by using a method with an intelligent water change between washing and final rinsing. This water change can be used to prepare washing and rinsing.
  • the proposed method employs a commercial dishwasher as described above comprising a wash chamber with a wash tank in communication with the wash chamber.
  • a commercial dishwasher as described above comprising a wash chamber with a wash tank in communication with the wash chamber.
  • it is a single-chamber dishwashing machine, that is to say a dishwasher, which has a single washing chamber, which, however, can naturally also be subdivided into partial areas.
  • the dishwasher is set up to wash items in the washing chamber in a washing process in the circulation mode.
  • the dishwasher has a rinsing tank, which can be configured for example as a boiler, but also the use of Nach Hughestanks with water heaters is possible.
  • the dishwasher is set up to subject washing items located in the rinsing chamber to a rinsing step.
  • the final rinse tank is at least partially filled with water.
  • This water is heated in the rinse tank, for which purpose, for example, the boiler heater can be used. Subsequently, the heated water is transferred to the wash tank.
  • a dishwasher which has a connecting line between the rinsing tank and wash tank, so that heated water can be transferred directly from the final rinse tank in the wash tank.
  • This connecting line may comprise, for example, one or more valves by means of which the transfer of the heated water from the rinsing tank into the washing tank can be controlled.
  • one or more pumps may be provided for this transfer.
  • the steps described of filling the rinsing tank, heating the water in the rinsing tank and transferring the heated water into the washing tank can preferably be carried out repeatedly until the washing tank has reached a predetermined level, for example.
  • a rapid filling of the washing tank with heated water can be carried out in order subsequently to be able to carry out a washing process and a rinsing process.
  • the method comprises carrying out one or more washing operations and carrying out one or more rinsing operations.
  • the above-described filling of the wash tank from the final washing tank which is referred to here and below as "water change”
  • water change can be used for the washing and the final rinsing process.
  • Washing and / or rinsing can in in addition to the circulation operation, including, for example, a circulating pump can be used, also be carried out in a simple operation.
  • the described method of water change in which successively to prepare a washing and rinsing process water is transferred from the final rinse tank in the wash tank to fill this, has the considerable advantage over known methods that the operational readiness can be brought about much faster. If a wash tank heater is additionally provided, the wash tank heater and the rinse tank heater can work in parallel so that the required amount of water can be quickly made available through separate systems. Alternatively, however, a wash tank heater can also be completely dispensed with.
  • the steps of filling the rinse tank, heating in the rinse tank, and transferring the heated water to the wash tank may be repeatedly performed, for example, until the wash tank has reached a predetermined minimum level for the wash or rinse cycle.
  • a pressure increase pump can be used for the transfer.
  • the rinsing liquid remains in the wash tank after completion of the rinsing step.
  • This rinsing liquid which, as described above, usually has an elevated temperature compared with that for the washing process, usually has only a slight contamination.
  • this rinse-off liquid is usually only water, which, for example, may additionally be mixed with a final-rinse liquid (for example certain surfactants).
  • This rinsing liquid is also suitable for a washing process. In this way, the production of operational readiness can be accelerated be used because the excess amount of heat in this remaining Nachêtberichttechnik at a subsequent next program cycle can be used to more quickly provide the required amount of heat in the wash tank for a washing process.
  • the heating of the water in the final rinsing tank for the preparation of the washing process can be such that the heated water in the final rinse tank in the transfer to the wash tank has an excess temperature above the wash temperature.
  • This excess temperature can be chosen in particular such that the usual heat losses during transfer of the heated water in the wash tank and heat losses are compensated by contact with the (usually colder) washing chamber, wash tank walls and / or the items to be washed in the washing chamber.
  • This excess temperature may be selected such that during the subsequent washing operation the predetermined washing temperature is maintained at least approximately (i.e., within predetermined limits, e.g., +/- 5 ° C).
  • the over-temperature may be based, for example, on empirical values, e.g. can be stored in a data store. Alternatively or additionally, however, it is also possible to use analytical or semiempirical methods which, for example based on a loading of the rinsing chamber with items to be washed, calculate or determine usual heat losses.
  • a draining step may additionally be provided in which the water is completely drained and / or pumped out of the wash tank after the final rinse step has been completed.
  • this draining step may be initiated by user input, eg, by a user pressing a "last program” key or a "draining" key to indicate that the dishwasher is to be taken out of service.
  • the method may be performed such that multiple program cycles are performed with the described method steps.
  • process steps can be performed.
  • a standby step can be carried out between and / or before at least one of the mentioned program cycles, in which only the process steps of filling the rinsing tank, heating the water in the rinsing tank and transferring it to the washing tank are carried out in order to make it ready for operation subsequent program cycle.
  • the operational readiness for a subsequent washing process can be maintained, so that, following the standby step, a washing process can be carried out immediately.
  • the standby step which is followed by a time delay to the subsequent washing process, so may be part of a subsequent program cycle in which then only the steps of washing, the steps of heating the Vietnamese Whywassers in the rinse tank (which, however, also already part of the standby Step) and the final rinse step.
  • the wash tank is preferably filled iteratively via the rinse cycle or boiler with water to produce readiness for operation and preparation of the washing process.
  • the wash tank can also have a direct feed, via which it can be filled at least partially with (fresh) water, so that the filling of the wash tank can be assisted via the final washing tank.
  • the wash tank can in particular have a wash tank heater, which likewise supports the preparation of the washing process and thus accelerates the production of operational readiness.
  • the excess temperature in the final rinse tank may be sized (e.g., calculated or determined empirically) to also compensate for heat losses when mixed with the wash tank directly via the direct feed supplied cold water.
  • a cleaning fluid in particular a dishwashing detergent, may additionally be added to the wash tank before the washing process is carried out.
  • cleaning fluids or dishwashing agents which may in particular have wash-active substances and / or bleaching agents, are known from the prior art.
  • a rinse aid can be added to the final rinse tank before the rinse step is carried out in order to improve the cleaning effect in the final rinse step and to increase the absence of spots on the ware.
  • the rinsing step may additionally, as described above, be carried out directly by applying the wash ware with water from the final rinse tank.
  • the volume of the rinsing tank (in particular of a boiler) is very limited, usually to 2-3 liters of useful water. Therefore, this limited amount of water or amount of heat also limits the cleaning effect or the sanitizing effect of Nach Published suitses.
  • a circulation process is used in the final rinse step.
  • the wash tank is filled with heated water from the final rinse tank.
  • the described water change is carried out here in preparation for the final rinse step.
  • the rinsing step is then carried out, in the circulation operation, with the rinsing water in the washing tank.
  • the process steps of at least partially filling the Vietnamese Vietnamesetanks with water, the heating of the water in the final washing tank and the transfer of the water can be carried out in the wash tank, wherein the wash tank is at least partially filled with water, wherein the Vietnameseêtvorgang with the im Washing tank water is carried out.
  • the post-rinsing water in the wash tank may be additionally added a rinse aid before the Vietnamese Vietnamese suitss.
  • the rinse aid may be added to the rinse tank or, alternatively or additionally, to the wash tank. The latter alternative has the particular advantage that contamination of the rinsing tank with rinse aid can be avoided.
  • the operation of the Nach Whyvorgangs with Vietnamese Pattersonêtkeit from the wash tank allows a Vietnamese Vietnamesevorgang with a small amount of water, which can be used several times, so that the total heat input to the dishes in Vietnamese Vietnamesevorgang and thus the sanitation effect is increased.
  • Preferred water temperatures in the washing process are between 50 ° C and 60 ° C, preferably at about 60 ° C.
  • Preferred temperatures during the rinsing step are for dishes between 50 ° C and 90 ° C, preferably at 83 ° C, or, for glasses at about 65 ° C.
  • the water temperatures can be influenced for example via a controller.
  • conventional commercial dishwashers can be used for the proposed method, which have a control that is set up by the program in order to carry out the method in one of the proposed variants.
  • a dishwasher has proven advantageous, which in addition to the above-described features of the washing chamber, the wash tank and the rinsing tank further comprises a connecting line to water directly from the final washing in the Transfer wash tank.
  • immediate is meant in particular a bypass of a Nach Hughesdüsensystems.
  • the dishwasher when the dishwasher has a controller configured to perform a method in any of the described embodiments, the dishwasher may be particularly configured to additionally perform the rinse step with water from the final rinse tank (conventional procedure) after filling from the final rinse tank, with water from the wash tank.
  • the dishwasher may be particularly configured to additionally perform the rinse step with water from the final rinse tank (conventional procedure) after filling from the final rinse tank, with water from the wash tank.
  • the dishwasher can, as described above, additionally have a fresh water inlet in order to fill the wash tank at least partially directly, bypassing the rinsing tank.
  • This variant makes in particular a simultaneous heating of washing water for the washing process in the wash chamber and in the final rinse tank positively noticeable.
  • the dishwasher may have a separate washing nozzle system and a Vietnamese Dahldüsensystem.
  • the same nozzle systems could be used for the washing process and the rinsing step, but this is less preferred for hygienic reasons.
  • the scope of the invention includes a computer program which, when running on a computer or computer network, executes the method according to the invention in one of its embodiments.
  • the scope of the invention includes a computer program with program code means for carrying out the method according to the invention in one of its embodiments when the program is executed on a computer or computer network.
  • the program code means may be stored on a computer-readable medium.
  • the scope of the invention a volume on which a data structure is stored, which can perform the inventive method in one of its embodiments after loading into a working and / or main memory of a computer or computer network.
  • a computer program product having program code means stored on a machine-readable carrier for carrying out the inventive method in one of its embodiments when the program is executed on a computer or computer network.
  • the program is understood as a tradable product. In principle, it can be in any form, for example on paper or a computer-readable data carrier, and in particular can be distributed via a data transmission network.
  • the scope of the invention includes a modulated data signal containing instructions executable by a computer system or computer network for carrying out a method according to one of the described method variants.
  • FIG. 1 an inventive dishwasher 110 is shown for commercial use.
  • the dishwasher has a rinsing chamber 112, which in this case is designed as a front loader and can be opened via a front flap 114. Washware 116 can be introduced into the wash chamber 112.
  • the rinsing chamber has in its lower region a wash tank 118, which in this embodiment is separated from the rest of the rinsing chamber 112 by a sieve tray 120.
  • the wash tank 118 has a wash tank heater 122, which in FIG. 1 only symbolically indicated.
  • the wash tank 118 has a temperature sensor 124, a level sensor 126 and a fresh water inlet 128 with a valve 130.
  • a washing nozzle system 132 is accommodated with spray arms, which is connected via a wash line system 134 and a circulation pump 136 to the wash tank 118.
  • the items to be washed 116 can be washed in a washing process during recirculation.
  • a system with fixed nozzles could be used instead of the spray arms.
  • the dishwasher 110 according to the embodiment in FIG. 1 also has a rinsing tank 138, which is designed in this embodiment as a boiler.
  • This rinsing tank can be filled with fresh water via an inlet 140, the inlet 140 having a valve 142.
  • the water can be heated by a rinsing tank heater 144.
  • the rinse tank 138 also has a level sensor 146 and a temperature sensor 148.
  • the post-rinse tank 138 is connected to the rinse chamber 112 via a positive pressure line 150 which, for example, allows steam to escape from the rinse tank 138 into the rinse chamber 112.
  • This pressure line 150 is a security feature.
  • the post-rinse tank 138 is connected to a post-rinse nozzle system 154 via a post-rinse line system 152.
  • a pressure increase pump 156 is further included in Nach Dahl effetssystem 152, and two valves 158 and 160.
  • a first valve 158 between the Vietnamese Hughestank 138 and the pressure increase pump 156 in Vietnamese Vietnamese effetssystem 152 added, a second valve 160 in Vietnamese effetelles 152 behind the pressure increase pump 156th and before branches to the rinse nozzle system 154.
  • connection line 162 which leads to the wash tank 118 opens between the first valve 158 and the pressure increase pump 156 in the final rinse line system 152.
  • This connection line 162 likewise has a valve 164.
  • the dishwasher 110 according to the embodiment in FIG. 1 a controller 170, which in FIG. 1 only symbolically indicated.
  • This controller may include electronic components and may additionally include, for example, a computer system that is programmably configured to perform a method in any of the embodiments described above and below.
  • This controller 170 may be connected, for example, to the temperature sensors 124, 148 and the level sensors 126, 146, as well as to the control with the various valves 130, 158, 160, 164, 168, 142. Also, a control of the pumps 136, 156 by the controller 170 should be possible.
  • the dishwasher in the embodiment in FIG. 1 a drain line 172 with a drain pump 174, via which (for example, also controlled by the controller 170), water can be pumped out of the wash tank 118 into a drain 176.
  • various dosing systems 178, 180 are provided, which in turn can also be controlled by the controller 170, and via which, for example, rinse aid 138 may be added in the rinse tank 138, and the wash tank 118 optionally a dishwashing detergent or a rinse aid, depending on the type of process used (see below ).
  • Dishwasher 110 shown can implement a method according to the invention.
  • Embodiments of this method are in the following Figures 6-8 shown. All these exemplary embodiments have in common that a filling of the wash tank takes place via the rinse tank, wherein the rinse tank is first at least partially filled with water, this water is heated there and the heated water is then transferred to the wash tank. These steps can be performed iteratively. The individual methods differ in the time at which the wash tank is filled by the rinse tank.
  • FIG. 2 1 is a first method of not forming part of the invention, in which a filling of the wash tank 118 via the post-rinse tank 138 is used to prepare a washing process.
  • step 210 After the start of the dishwasher 110 (step 210), first the operational readiness of the dishwasher 110 is established.
  • the final rinse tank 138 is filled with fresh water in step 212 and this filling can be done via the inlet 140, for example, in which the controller 170, the valve 142 opens.
  • step 214 the water in the final rinse tank 138 is heated. This can be done by the controller 170 correspondingly activating or heating up the rinsing tank heater 144.
  • the water is transferred from the final rinse tank 138 into the wash tank 118.
  • This can in the embodiment of the dishwasher 110 according to FIG. 1 be done by opening the valves 158 and 168, where closed against the valves 160 and 164, the pressure increase pump 156 transfers the water from the final rinse tank 138 into the wash tank 118.
  • step 218 it is queried whether a specific predetermined level has been reached in the wash tank 118, for example, whether the wash tank 118 is filled. This can be done in particular by querying the level sensor 126 by the controller 170.
  • a washing process 224 is started. This can in the embodiment of the dishwasher 110 according to FIG. 1 For example, be done by the valves 164 and 168 are closed and that the circulation pump 136 is started. In this way, the wash ware 116 is washed in the washing chamber 112 in the circulation operation.
  • Parallel to the washing process 224 is in the in FIG. 2 shown process flow of the final rinse tank 138 refilled (step 212) and the water in the final rinse tank 138 heated (step 214). In this way, the subsequent rinsing process (see below) is prepared.
  • the wash water is pumped out of the wash tank 118 (step 226). This can be done, for example, by the fact that in FIG. 1 the drain pump 174 is started.
  • a rinsing process 228 is started. This can be done in FIG. 1 be done by the valves 164, 168 are closed, the valves 158 and 160 are opened and the pressure increase pump 156 is started. In this way, the wash ware 116 is supplied with the water present in the final rinse tank 138, if appropriate with added rinse aid through the dosing system 178.
  • FIG. 3 is a variant of in FIG. 2 shown method, which is not part of the invention, in which the separation between the preparation of the operational readiness and the actual program flow with washing process and rinsing process is even more pronounced.
  • the method steps 210 to 222 are again carried out initially, in which, as described with reference to FIG FIG. 2 described operational readiness is prepared by heated washing water is introduced into the wash tank 118 by iteratively filling the wash tank 118 via the final washing tank 138. If this readiness for operation is established, the readiness for operation is signaled in step 230. This can be done, for example, by setting a control bit in the controller 170, and / or acoustic or optical signals can be passed to a user.
  • An optional waiting time follows this establishment of operational readiness.
  • the preceding method steps 210 to 230 may also be part of this standby phase, ie a phase in which neither a washing nor a rinsing process is carried out.
  • step 234 in FIG. 3 the actual program flow is started (step 234 in FIG. 3 ), for example by pressing a program start button by a user, so again, in analogy to FIG. 2 , the washing process 224 is started, and in parallel thereto, in turn, the post-rinse tank 138 is filled (step 212) and the water in the rinse tank 138 is heated (step 214).
  • steps 212 and 214 may be performed already in standby 232.
  • FIG. 4 is a modification of the in FIG. 3 shown method, which is not part of the invention. This procedure differs from that in FIG. 3 shown procedures only in the final phase of the program flow. As well as in FIG. 3 also stays in FIG. 4 after rinsing operation 228, rinse water in wash tank 118 (step 236).
  • a query 238 is performed, in which it is queried whether a user has pressed a pump-off button or not (in FIG. 4 symbolically denoted by reference numeral 240). If this pump-off button is pressed (branch 242), the wash tank 118 is pumped out (step 226). Subsequently, the program can be terminated (step 244), or it can be returned to the start 210 again.
  • FIG. 5 is another variation of the in FIG. 3 shown method, which is not part of the invention.
  • This method essentially corresponds to the method according to FIG. 3 , except that at the end, after completion of the rinse operation 228, pumping is automatically performed in step 226, after which it is possible to return to the start in 210. Otherwise, the method corresponds to the method in FIG. 3 ,
  • the iterative filling of the wash tank 118 by the post-rinse tank 138 was merely used as a preparation for the wash operation 224.
  • the rinsing process 228 was carried out in each case only with the water contained in the final rinse tank 138. Not mentioned in the figures is that for the washing process 224 the washing tank 118 from the dosing 180 can be added detergent, and for the rinsing 228 the rinse tank 138 from the dosing system 178 rinse aid can be added.
  • the iterative filling of the wash tank 118 from the rinsing tank 138 with water heated there to prepare the washing process 224 can be done in addition by introducing fresh water through the fresh water inlet 128 into the wash tank 118.
  • each of the controller 170, the valve 130 are opened, so that the wash tank 118 a certain amount of fresh water is supplied, which is where it is mixed with water from the final rinse tank 138 and, for example, heated by this or, alternatively or additionally, by the (optional) wash tank heater 122 can be heated.
  • this iterative filling of the wash tank 118 from the post-rinse tank 138 may also be used to prepare the rinse operation 228.
  • the rinsing process is not limited by the limited volume of the rinse tank 138, but rather, for example, after the wash tank 118 has been emptied, it may be iteratively filled from the rinse tank 138 for the rinse operation 228.
  • the valves 164 and 160 are opened, whereas the valves 158 and 168 are closed.
  • FIGS. 6 to 8 Examples of such methods according to the invention, in which the iterative filling of the wash tank 118 from the final rinse tank 138 is used to prepare the rinse operation 228, are shown in FIGS FIGS. 6 to 8 shown.
  • FIG. 6 An exemplary embodiment of the method according to the invention is shown, in which the iterative filling of the wash tank 118 from the final rinse tank 138 is used both for the washing process 224 and for the rinsing process 228.
  • the post-rinse tank 138 is first filled with water again in step 212, this heated in step 214 and transferred in step 216 in the wash tank. It can, what in FIG. 6 indicated by reference numeral 248, the washing tank 118 via the dosing 180 additional rinsing agent are added, again in step 218, the already known from the previous method question whether the wash tank has reached a predetermined level.
  • the washing process 224 is started on the one hand and the refill tank 138 is refilled (212) and the other Water in the final rinse tank 138 is heated for the subsequent rinsing process (step 214).
  • the washing process 224 is carried out at least until the water in the final washing tank 138 has reached the temperature required for the rinsing process.
  • the wash tank 118 is pumped down via the drain pump 174 to prepare this for the final rinse.
  • the post-rinse water is transferred from the final rinse tank 138 to the wash tank 118 (step 216).
  • this transfer step 216 again filling the rinse tank (212) and heating the water in the rinse tank (step 214).
  • This second amount of water is then transferred back into the wash tank 118 (step 216), wherein rinse aid can also be added (in FIG. 6 designated by reference numeral 250).
  • the rinse aid may be added either from the dosing system 178 in the final rinse tank 138, or may be added directly into the wash tank 118, for example via the dosing 180, which may thus be configured as a multifunctional dosing.
  • step 218 it is queried in step 218 whether the wash tank 118 has already reached the predetermined level for the final rinse operation 228. If this is not the case (220), an amount of water is again supplied to the wash tank 118 by filling the rinse tank 212, warming water in the final rinse tank 214 and transferring it to the wash tank 118 (step 216). Finally, when the amount of water in wash tank 118 required for rinse operation 228 is reached, the iterative filling of guard tank 118 from rinse tank 138 is completed (step 222) and the rinse operation is performed (step 228).
  • either the water from the wash tank 118 can be completely or partially pumped off, or this can, for example, as in step 236 in FIG. 3 shown wholly or partially remain in the wash tank, for a washing process 224 a subsequent program cycle.
  • FIG. 6 1 shows an exemplary embodiment in which the iterative filling of the washing tank 118 via the rinsing tank 138 is used both for the washing process 224 and for the rinsing process 228.
  • FIG. 7 shows a modified embodiment in which this iterative filling is used exclusively for the Nachêtvorgang 228, the post-rinse process 228 thus again takes place in the recirculation mode from the wash tank 118.
  • the post-rinse tank 138 is first filled again in step 212, and the water in the rinse tank 138 is heated in step 214.
  • this water is not transferred immediately after heating in the wash tank 118, but initially remains in the rinse tank 138th
  • the wash tank 118 is filled via the fresh water inlet 128 (step 252), for example, the inflow valve 130 can be opened. This water is heated in step 254 by the controller 170 driving the wash tank heater 122. Simultaneously or additionally, rinse may be added to the wash tank 118 (step 248).
  • the washing process 224 can be started. After completion of the wash operation 224, the water is pumped out of the wash tank 118 (step 226).
  • the hot water from the post-rinse tank 138 is transferred to the wash tank 118 in step 216 to prepare for the subsequent post-rinse step.
  • this transfer 216 is followed by further iterative filling steps, that is again a sequence of steps 212, 214 and 216. Again, at this or other times a query 218 made, whether the water level in the wash tank 118 is sufficient. If this is not the case (branch 220), iterative filling is continued, whereas if the water level is sufficient (branch 222), the rinsing process 228 can be started.
  • rinse aid may also be added to the rinse tank 138 and / or the wash tank 118 at any time after pumping the wash tank 118 after completion of the wash operation 224, which is described in US Pat FIG. 7 indicated by the reference numeral 250.
  • FIG. 8 The method shown initially runs identically to in FIG. 7 illustrated method. Subsequent to the Nach Hughesvorgang 228, however, takes place, analogous to the embodiment in FIG. 4 above, a query as to whether the pump-off button (indicated by reference numeral 240) is pressed or not (step 238). If the pump-off button is pressed (step 242), then pumping is carried out in method step 226, after which the operation can either be ended (step 244) or, with empty wash tank 118, a new start 210 can take place. If the pump-off button is not pressed (case 246 in FIG. 8 ), the rinse water is left wholly or partially in the wash tank 118 without pumping it, and the rinse water can be used in a subsequent program cycle.
  • the pump-off button indicated by reference numeral 240
  • pumping is carried out in method step 226, after which the operation can either be ended (step 244) or, with empty wash tank 118, a new start 210 can take place. If the pump-off button is

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (29)

  1. Procédé de fonctionnement d'un lave-vaisselle industriel (110), le lave-vaisselle (110) comprenant une chambre de lavage (112) munie d'un réservoir de lavage (118) et étant agencé pour laver, en mode de circulation d'eau dans un cycle de lavage, des objets à laver (116) se trouvant dans la chambre de lavage (112), le lave-vaisselle (110) présentant en outre un réservoir de rinçage (138) et étant agencé pour soumettre les objets à laver (116) se trouvant dans la chambre de lavage (112) à une étape de rinçage, le procédé présentant au moins un cycle de programmes comprenant un cycle de lavage et un cycle de rinçage et en outre les étapes suivantes :
    a) le réservoir de rinçage (138) est rempli d'eau au moins en partie ;
    b) l'eau dans le réservoir de rinçage (138) est échauffée ; et
    c) l'eau échauffée est transférée dans le réservoir de lavage (118),
    le réservoir de lavage (118), à la fin du cycle de lavage, étant rempli d'eau échauffée provenant du réservoir de rinçage (138) et le cycle de rinçage étant réalisé avec l'eau se trouvant dans le réservoir de lavage (118).
  2. Procédé selon la revendication précédente, les étapes a), b) et c) étant réalisées de manière répétée.
  3. Procédé selon la revendication précédente, les étapes a), b) et c) étant réalisées aussi souvent, jusqu'à ce qu'un niveau d'eau dans le réservoir de lavage (118) atteigne un niveau minimal prédéfini pour le cycle de lavage et/ou l'étape de rinçage.
  4. Procédé selon l'une quelconque des revendications précédentes, une pompe d'augmentation de pression (156) étant utilisée à l'étape c) du procédé.
  5. Procédé selon l'une quelconque des revendications précédentes, le réservoir de rinçage (138), pendant la réalisation du cycle de lavage, étant rempli d'eau au moins en partie et celle-ci étant échauffée.
  6. Procédé selon l'une quelconque des revendications précédentes, le liquide de rinçage restant dans le réservoir de lavage (118) après l'achèvement du cycle de rinçage.
  7. Procédé selon la revendication précédente, un second cycle de programmes étant réalisé après la réalisation d'un premier cycle de programmes, un liquide de rinçage d'un cycle de rinçage du premier cycle de programmes étant utilisé, pendant le cycle de lavage du second cycle de programmes, entièrement ou en partie pour le cycle de lavage.
  8. Procédé selon la revendication précédente, l'eau échauffée provenant du réservoir de rinçage, à l'étape c) du procédé du second cycle de programmes, étant mélangée au liquide de rinçage du premier cycle de programmes resté dans le réservoir de lavage (118) depuis le premier cycle de programmes.
  9. Procédé selon l'une quelconque des revendications précédentes, le cycle de lavage et/ou le cycle de rinçage étant réalisé avec une température prédéfinie de l'eau, l'échauffement de l'eau, à l'étape b) du procédé, étant réalisé dans le réservoir de rinçage (138) de manière à ce que l'eau échauffée présente une température excessive située au-delà de la température prédéfinie, de manière à ce que les pertes de chaleur usuelles lors du transfert de l'eau échauffée dans le réservoir de lavage (118) et les pertes de chaleur dues au contact de l'eau échauffée avec une quantité usuelle d'objets à laver (116) soient compensées dans la chambre de lavage (112), de manière à ce que la température prédéfinie soit maintenue au moins approximativement pendant le cycle de lavage resp. pendant le cycle de rinçage.
  10. Procédé selon l'une quelconque des revendications précédentes, l'eau provenant du réservoir de lavage (118), à la fin d'un cycle de programmes, étant, dans une étape de pompage, vidangée ou pompée dans un conduit d'évacuation.
  11. Procédé selon la revendication précédente, la vidange ou le pompage étant initié par une entrée de l'utilisateur.
  12. Procédé selon l'une quelconque des revendications précédentes, plusieurs cycles de programmes étant réalisés.
  13. Procédé selon la revendication précédente, une étape d'attente étant réalisée entre les cycles de programmes et/ou avant et/ou pendant au moins l'un des cycles de programmes, les étapes a) à c) du procédé étant réalisées à l'étape d'attente afin d'établir une disponibilité de fonctionnement pour un cycle de lavage.
  14. Procédé selon la revendication précédente, le cycle de lavage et le cycle de rinçage étant réalisés à la fin de l'étape d'attente.
  15. Procédé selon l'une quelconque des revendications précédentes, le réservoir de lavage (118), en supplément avant le cycle de lavage, étant rempli d'eau par l'intermédiaire d'une arrivée d'eau fraîche.
  16. Procédé selon la revendication précédente, l'eau dans le réservoir de lavage (118) étant en plus échauffée au moyen d'un chauffage (122) de réservoir de lavage.
  17. Procédé selon l'une quelconque des revendications précédentes, un fluide de nettoyage, notamment un liquide pour vaisselle, étant en plus ajouté au réservoir de lavage (118) avant le cycle de lavage.
  18. Procédé selon l'une quelconque des revendications précédentes, un liquide de rinçage étant en plus ajouté au réservoir de rinçage (138) et/ou au réservoir de lavage (118) avant la réalisation du cycle de rinçage.
  19. Procédé selon l'une quelconque des revendications précédentes, le cycle de lavage étant réalisé à une température de l'eau de 50°C à 75°C, de préférence de 60°C.
  20. Procédé selon l'une quelconque des revendications précédentes, le cycle de rinçage étant réalisé à une température de l'eau comprise entre 50°C et 90°C, de préférence à 83°C ou à 65°C.
  21. Programme d'ordinateur comprenant des moyens de code de programme afin de réaliser un procédé selon l'une quelconque des revendications de procédé précédentes lorsque le programme d'ordinateur est exécuté sur un ordinateur (170) ou sur un réseau d'ordinateurs.
  22. Support de données ou système informatique sur lequel une structure de données est mémorisée, laquelle, après un téléchargement dans une mémoire de travail et/ou dans une mémoire principale d'un ordinateur (170) ou d'un réseau informatique, exécute le procédé selon l'une quelconque des revendications de procédé précédentes.
  23. Produit de programme d'ordinateur comprenant des moyens de code de programme mémorisés sur un support lisible par machine, afin de réaliser toutes les étapes selon l'une quelconque des revendications de procédé précédentes, lorsque le programme d'ordinateur est exécuté sur un ordinateur (170) ou sur un réseau d'ordinateurs.
  24. Signal de données modulé, lequel contient des instructions exécutables par un système d'ordinateurs (170) ou un réseau informatique, destinées à la réalisation d'un procédé selon l'une quelconque des revendications de procédé précédentes.
  25. Lave-vaisselle (110) pour utilisation industrielle, comprenant une chambre de lavage (112) munie d'un réservoir de lavage (118), le lave-vaisselle (110) étant agencé pour laver, en mode de circulation d'eau dans un cycle de lavage, des objets à laver (116) se trouvant dans la chambre de lavage (112), le lave-vaisselle (110) présentant en outre un réservoir de rinçage (138) et étant agencé pour soumettre les objets à laver (116) se trouvant dans la chambre de lavage (112) à un cycle de rinçage, le lave-vaisselle (110) présentant une commande (170) qui est agencée pour réaliser un procédé selon l'une quelconque des revendications de procédé précédentes.
  26. Lave-vaisselle (110) selon la revendication précédente, le lave-vaisselle (110) comprenant en outre une conduite de raccordement (152, 166) pour transférer l'eau provenant du réservoir de rinçage (138) dans le réservoir de lavage (118).
  27. Lave-vaisselle (110) selon l'une quelconque des deux revendications précédentes, le lave-vaisselle (110) étant en outre agencé pour réaliser en plus l'étape de rinçage avec de l'eau provenant du réservoir de rinçage (138).
  28. Lave-vaisselle (110) selon l'une quelconque des trois revendications précédentes, le lave-vaisselle (110) présentant en plus une arrivée d'eau fraîche (128) vers le réservoir de lavage (118).
  29. Lave-vaisselle (110) selon l'une quelconque des quatre revendications précédentes, le lave-vaisselle (110) présentant un système de buses de lavage (132) et un système de buses de rinçage (154) séparé du système de buses de lavage (132).
EP08006161A 2007-05-31 2008-03-28 Lave-vaisselle à changement d'eau Not-in-force EP1997419B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007025434A DE102007025434B3 (de) 2007-05-31 2007-05-31 Geschirrspülmaschine mit Wasserwechsel

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EP1997419A1 EP1997419A1 (fr) 2008-12-03
EP1997419B1 true EP1997419B1 (fr) 2010-05-26

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US (1) US20080314414A1 (fr)
EP (1) EP1997419B1 (fr)
AT (1) ATE468802T1 (fr)
CA (1) CA2632825A1 (fr)
DE (2) DE102007025434B3 (fr)

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DE102008013549A1 (de) * 2008-03-11 2009-09-17 Premark Feg L.L.C., Wilmington Geschirrspülmaschine und Verfahren zum Reinigen von Spülgut
US9585538B2 (en) * 2008-07-08 2017-03-07 Jackson Wws, Inc. Booster tank
DE102012212636B4 (de) 2012-07-18 2015-04-02 Premark Feg L.L.C. Gewerbliche Spülmaschine mit Trocknungssystem sowie Verfahren zum Betreiben einer solchen Spülmaschine
KR102042221B1 (ko) 2012-12-28 2019-11-07 엘지전자 주식회사 식기세척기 및 그 제어방법
JP2017202230A (ja) * 2016-05-13 2017-11-16 大和冷機工業株式会社 食器洗浄機及び食器洗浄機の制御方法
CN106889964A (zh) * 2017-04-30 2017-06-27 卫祥 环保型洗碗机
DE102022201954A1 (de) * 2022-02-25 2023-08-31 BSH Hausgeräte GmbH Verfahren, Computerprogrammprodukt und Geschirrspülmaschine

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JPH0675563B2 (ja) * 1989-03-03 1994-09-28 ホシザキ電機株式会社 食器洗浄機のための制御装置
EP1042983A1 (fr) * 1999-03-31 2000-10-11 Chemische Fabrik Dr. Weigert Machine à laver vaisselle du type à tunnel
DE19940645A1 (de) * 1999-08-26 2001-03-08 Henkel Ecolab Gmbh & Co Ohg Spülverfahren und Spülmaschine
US6615850B1 (en) * 1999-09-10 2003-09-09 General Electric Company Dishwasher sanitation cycle
US7195023B2 (en) * 2000-12-08 2007-03-27 Appliance Scientific, Inc. Rapid residential dishwasher
DE10357642B4 (de) * 2003-12-10 2005-09-29 Meiko Maschinenbau Gmbh & Co. Kg Heizvorrichtung für einen Geschirrspülautomaten
DE102004056052A1 (de) * 2004-11-19 2006-06-01 Meiko Maschinenbau Gmbh & Co. Kg Verfahren zur Beurteilung und Sicherstellung von thermischer Hygienewirkung
JP4680675B2 (ja) * 2005-05-19 2011-05-11 ホシザキ電機株式会社 食器洗浄機
US20060260656A1 (en) * 2005-05-20 2006-11-23 Dietrich Berner Commercial dishwasher, in particular glass washer
DE102005023429B4 (de) * 2005-05-20 2007-03-29 Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware), Wilmington Gewerbliche Geschirrspülmaschine, insbesondere Gläserspülmaschine

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Publication number Publication date
CA2632825A1 (fr) 2008-11-30
DE102007025434B3 (de) 2009-01-08
DE502008000705D1 (de) 2010-07-08
US20080314414A1 (en) 2008-12-25
EP1997419A1 (fr) 2008-12-03
ATE468802T1 (de) 2010-06-15

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