Feeding device for cleaning tablets or salt tablets, electrolysis cell and heating device

Abstract

The disclosure relates to a feed device (60) for salt tablets, comprising a cartridge (61) designed as a rotatable drum, in which the salt tablets are stacked in a plurality of slots. The feed device (60) is used in particular for dosing salt tablets into an electrolysis cell (20).

Description

Field of the invention

[0001] The invention relates to a feeding device for cleaning and / or salt tablets, in particular for an electrolysis cell.

[0002] This is used in particular for the in situ production of cleaning agents for cleaning hot appliances, in particular appliances for preparing or heating food, in particular for cleaning ovens, steam cookers, combi steamers and / or speed ovens, smoking appliances and / or washing machines or dishwashers. Background of the invention

[0003] Hot appliances for baking, cooking, or steaming must be cleaned at more or less regular intervals after food preparation. Cleaning is usually done with alkaline solutions, as the residue is primarily greasy.

[0004] In the catering industry or in the home, cleaning processes can be integrated into the hot appliance. The cleaning agent is stored as a concentrate in a reservoir. During cleaning, the cleaning agent is then pumped into the hot appliance using a pump, for example, and mixed with water to create a cleaning solution. Cleaning is usually automatic, and after cleaning, the cleaning solution is rinsed out of the appliance with water. In the case of water with a total hardness of > 5 °d, calcium carbonate may be present in the baking or cooking chamber after cleaning.

[0005] In the above-mentioned case, the cleaning concentrate is used in liquid form. Depending on its composition and concentration, the solution can be irritating or even corrosive. This poses the risk of a leak through which irritating or corrosive liquid escapes.

[0006] In other cases, the cleaner is used as a solid. This is usually sodium hydroxide combined with a surfactant.

[0007] In this case, too, both transport, storage, and application are problematic – sodium hydroxide reacts strongly exothermically when dissolved in water. In particular, there are ovens that include a baking chamber that can be automatically cleaned using a liquid cleaning agent. The cleaning agent can be pumped from a reservoir into the baking or cooking chamber, for example, and distributed via the fan. Steam can also be directed into the cooking chamber, allowing the chamber to be cleaned automatically during a cleaning program.

[0008] The cleaning agent can be added to the oven in solid form, such as a tablet, as described above. The tablet dissolves during the cleaning program. Such solid tablets contain many chemicals that are harmful to wastewater. Handling such cleaning tablets is also unpleasant, and skin contact should be avoided.

[0009] Patent application EP 2 273 200 A1 discloses a cooking appliance with connections for supplying an acid or alkali. The design of such an appliance is very complex. In particular, it requires a complete redesign of a conventional appliance, which has only a single water connection. Object of the invention

[0010] The invention is based on the object of simplifying the dosing of cleaning and / or salt tablets, in particular for an electrolysis cell for producing a cleaning agent for a hot appliance. Summary of the invention

[0011] The object of the invention is already achieved by a feeding device and by an electrolysis cell according to one of the independent claims.

[0012] Preferred embodiments and further developments of the invention can be found in the subject matter of the dependent claims, the description and the drawings.

[0013] The invention relates to a feed device for cleaning and / or salt tablets. In particular, the invention relates to a feed device for salt tablets, which is equipped with an electrolysis cell for the in-situ production of cleaning agents for a hot appliance.

[0014] The feed device comprises a cartridge designed as a rotatable drum in which the tablets are stacked in a plurality of shafts.

[0015] If salt tablets are mentioned below, they can alternatively also be cleaning tablets.

[0016] The cleaning tablets can be designed in particular as washing machine or dishwasher tablets.

[0017] The feed device is particularly designed to separate and dispense the tablets. In particular, salt tablets are conveyed into an electrolysis cell by means of the feed device.

[0018] Separation within the meaning of the invention refers to the separation of at least one tablet from a stack. Depending on the design, several tablets can also be separated at once, for example, two salt tablets can be separated at once and conveyed into the electrolysis cell.

[0019] In a preferred embodiment of the invention, the feed device comprises a link which moves a tablet outwards when the cartridge designed as a drum rotates.

[0020] By moving the tablet outward, it is separated and can be transported into the electrolysis cell. In particular, a salt tablet can be transported into the electrolysis cell through a hole in the bottom of the feeder.

[0021] Preferably, the slide is designed in such a way that a stack of tablets slides one level lower when moving over the slide.

[0022] The slide mechanism thus transports one or more salt tablets outward and falls into the electrolysis cell. The tablets arranged above then slide to a lower level, particularly via a ramp in the slide mechanism. After another rotation of the cartridge, the next salt tablet is separated and fed into the electrolysis cell. The cartridge can comprise, in particular, three to nine, preferably five to seven, compartments.

[0023] The cartridge is preferably removably mounted on a holder and can be removed during maintenance and replaced with a new, full cartridge. The cartridge is preferably designed to be refillable. The feed device can comprise a hole arranged in the base of the feed device for dispensing the tablets. The base of the feed device can, in particular, be designed as the cover of the electrolysis cell.

[0024] In a further development of the invention, the hole is closed with a flap. This can, for example, be a gravity-operated flap.

[0025] Preferably, however, the flap is opened via a driver. The driver can be arranged, in particular, on a cartridge holder. The cartridge holder rotates with the cartridge. The flap is thus forced open, which increases reliability. The cartridge holder preferably includes channels through which the salt tablets slide into the cartridge holder, from where they are transported into the electrolysis cell.

[0026] In a preferred embodiment, the feed device comprises at least two cartridges designed as rotatable drums. Salt can be conveyed into both chambers of a two-part electrolysis cell via the two rotatable drums. Embodiments with more cartridges are also conceivable.

[0027] Preferably, the feeding device further comprises the electrolysis cell to which the salt tablets can be fed.

[0028] According to a preferred embodiment, the cartridge or cartridge holder is moved by an electric motor. This can be a gear motor that drives the cartridge holder via a gear drive.

[0029] The invention further relates to a cartridge which is designed for the feed receptacle described above.

[0030] The cartridge is designed as a rotatable drum and comprises a plurality of slots in which tablets are stacked.

[0031] Preferably, the cartridge is designed such that the salt tablets are held in a state not connected to the feed device and thus cannot slip out.

[0032] In particular, the cartridge may comprise sliders which, when not inserted, engage under the stack of tablets and which, when the cartridge is inserted into the feed device, in particular when connected to the cartridge holder, are moved away in such a way that the stacked tablets are released.

[0033] According to one embodiment of the invention, the slides are moved via a rotatable ring of the cartridge. In particular, this rotatable ring can be inserted into a rotatable ring of the cartridge receptacle.

[0034] In one embodiment of the invention, the sliders move outwards when the coupled rotatable rings are rotated and thereby also lock the cartridge in the cartridge receptacle.

[0035] The invention further relates to an electrolysis cell. The electrolysis cell is particularly designed for the described heating device or for carrying out the described method.

[0036] The electrolysis cell is designed as an electrolysis cell divided into at least two parts and comprises a partition wall which divides the electrolysis cell into at least two chambers.

[0037] According to the invention, an insert with an ion exchange membrane is inserted into the partition wall. The ion exchange membrane can be an anion or cation exchange membrane, in particular as described above.

[0038] The insert may in particular comprise seals by means of which it sits sealingly in the wall of the electrolysis cell.

[0039] The ion exchange membrane can in particular be inserted between two plates which form the insert.

[0040] The plates are perforated so that the ion exchange membrane is in contact with the electrolyte.

[0041] According to a preferred embodiment, the ion exchange membrane is prestressed in the insert. It has been shown that prestressing the ion exchange membrane can improve the efficiency of the electrolysis cell. This may be due to the fact that the ion exchange membrane expands upon contact with the electrolyte. This is compensated for by the prestressing. Prestressing prevents wrinkles from forming in the ion exchange membrane during operation of the electrolysis cell.

[0042] According to one embodiment of the invention, the prestressing is effected by a spring element inserted in particular into a plate.

[0043] Furthermore, the ion exchange membrane can be installed in a dry state. Pretreatment, such as activating the membrane with an acid or alkali, is therefore not necessary before installation.

[0044] According to one embodiment, the prestressing can be achieved by using the sealing lip of a lip seal as a spring element against the ion exchange membrane. In particular, a lip seal is inserted between the plates of the insert, with the sealing lip resting against the ion exchange membrane and prestressing it.

[0045] This allows for particularly simple pre-tensioning of the ion exchange membrane. According to one embodiment, the lip seal is tensioned when the plates are closed or assembled. The lip seal is pressed against the membrane.

[0046] The disclosure further relates to a method for cleaning a hot appliance for preparing food, in particular an oven.

[0047] The oven, as defined by the invention, serves to prepare food by heating it. Its application is therefore not limited to baking in the narrow sense, but also, for example, to roasting, grilling, or simply heating food.

[0048] In particular, the disclosure also relates to so-called self-cooking centers. Such ovens, used primarily in the catering industry and supermarkets, can prepare food with the aid of heat, in particular steam and / or infrared radiation. Cooking is automated, i.e., a food-specific program is entered, the ingredients or the prepared food is placed in the appliance, and the food is ready to serve after the program has ended. The disclosure further relates to a dishwasher, in particular a dishwasher that can be used in the home or in the catering industry. The dishwasher comprises a housing with a heatable compartment. The heatable compartment can contain pull-out drawers for dishes and cutlery.

[0049] The dishwasher includes a water inlet and a wastewater outlet. By starting a cleaning program, cutlery and dishes can be washed. This process warms the interior of the dishwasher, at least temporarily.

[0050] The dishwasher also includes a control module that can be used to set various cleaning programs.

[0051] The disclosure further relates to a washing machine. A washing machine comprises a rotatable drum in which the laundry is washed. The washing machine also comprises an inlet and an outlet.

[0052] The washing machine also includes a control module through which various washing programs, preferably also a program for cleaning the laundry drum, can be selected.

[0053] The acid collected in the optional storage container can be used after the drum cleaning program has started to remove deposits that have formed during the washing process.

[0054] The washing machine can also include a dosing container. Since the lye generated by the electrolysis cell can optionally be used partially as detergent, a correspondingly adapted detergent can be poured into the dosing container, which contains less or no lye than conventional detergent. In particular, washing additives and laundry care substances can be dosed. In one embodiment of the invention, the heating appliance has a fan, which circulates the warm air, possibly including steam, in the cooking chamber.

[0055] According to the method, a lye and an acid are produced from a salt by means of an electrolysis cell with at least one ion exchange membrane, wherein at least the lye is flushed into the heatable space for cleaning.

[0056] A cation exchange membrane, an anion exchange membrane or a bipolar exchange membrane can be used as an ion exchange membrane.

[0057] According to one embodiment, the electrolysis cell is divided into at least two chambers by the ion exchange membrane, wherein the acid is produced in a first chamber and the alkali is produced in a second chamber.

[0058] The invention is based on the discovery that using such an electrolysis cell allows a simple production of a cleaning solution. This eliminates the need for the otherwise usual additives, for example, for providing the cleaning agent in solid form.

[0059] Rather, as provided in a preferred embodiment of the invention, the salt can be added as a solid, particularly as granules or tablets. These dissolve in a brine container, and the resulting salt solution is fed into the electrolysis cell, or the tablet can be added directly to the electrolysis cell, where it dissolves.

[0060] The heating device is connected to a unit or comprises a unit which has a storage container for a salt or a salt solution and an electrolysis cell with at least one ion exchange membrane in order to produce an acid and an alkali from the salt, wherein the acid and / or alkali can be transferred via a line into the heatable space, and wherein the heating device comprises a control device which is designed to carry out at least one cleaning program, wherein the unit can be controlled via the control device.

[0061] The unit is designed, in particular, as a module comprising at least the electrolysis cell with at least one ion exchange membrane and a salt supply device. These components are preferably arranged in a housing of the unit or module.

[0062] According to one embodiment, the unit is designed as an external unit and is connected to the heating device by at least one line.

[0063] The unit preferably includes a dosing device for the solid salt. A defined amount of salt can be transferred from a storage container into the electrolysis cell via the dosing device.

[0064] Preferably, the salt, which is present as a solid, is transferred directly into the electrolysis cell. The salt dissolves in the electrolysis cell, thus enabling a particularly simple setup.

[0065] The dosing device can comprise, for example, a conveying device for tablets, in particular with a rotary plate, or a conveying device for granules, in particular with a conveyor screw.

[0066] In contrast to cleaning tablets, handling the salt is unproblematic because it is neither acidic nor alkaline.

[0067] The salt is an alkali salt, in particular a sulfate, phosphate, bicarbonate or a carboxylate, in particular a citrate, maleate, malate, formate, tartrate or fumarate.

[0068] This creates a lye, such as caustic soda, which cleans the cooking chamber and is safe for food.

[0069] The acid, in particular the resulting carboxylic acid or sulfuric acid, can also be added to the cooking chamber for cleaning, if necessary diluted.

[0070] In particular, it is intended that after cleaning with the alkali, the heated space undergoes a further cleaning process by rinsing with the acid. This process removes, in particular, oxide deposits and limescale deposits.

[0071] When the method is used for a washing machine or dishwasher, according to one embodiment of the invention, the lye generated by the electrolysis cell is used to clean the laundry or the dishes or cutlery. The lye generated can thus at least partially replace the detergent or dishwashing detergent.

[0072] In one embodiment, the washing machine or dishwasher can include a dosing container through which washing or rinsing additives are added to the lye during a cleaning program. In particular, enzymatically active cleaning additives can be added. The additives can be added in both liquid and solid form. Since the lye is used as the main component of the washing or rinsing detergent, such additives only need to be added in relatively small quantities. The corresponding container therefore only needs to be refilled infrequently.

[0073] In a dishwasher, the acid generated by the electrolytic cell can also be used in a machine cleaning program without dishes or in a final rinse program. The acid prevents deposits.

[0074] In a washing machine, the acid can be used to run a drum cleaning program. The acid removes deposits in the tub. Such deposits can cause unpleasant odors, especially in washing machines.

[0075] Preferably, the room is heated during cleaning, in particular to a temperature between 40°C and 90°C.

[0076] Steam can also be directed into the heated room for cleaning purposes.

[0077] The lye and / or acid are preferably fed into the cooking chamber by circulation via the pump. A fan-assisted feed is also conceivable. In particular, an atomizer can be positioned in front of or behind the fan to finely disperse the acid or lye, which is then distributed throughout the chamber as an aerosol or mist.

[0078] According to one embodiment, the heating device is connected via a single line to an external unit comprising a storage container for a salt or a salt solution and an electrolysis cell with at least one ion exchange membrane to produce an acid and an alkali from the salt.

[0079] The acid and / or alkali can be transferred via a pipe into the heatable chamber of the heating device.

[0080] The heating device in turn comprises a control device which is designed to execute at least one cleaning program, wherein the external unit can be controlled via the control device.

[0081] The disclosure therefore proposes installing an external unit with an electrolysis cell inline into the water supply to the heating device. This eliminates the need for additional connections to the heating device for introducing acidic or alkaline water. The external unit is preferably connected to the heating device via a communication line.

[0082] The heating device can be designed in the same way as a conventional heating device and only requires a corresponding adaptation of the software that controls the cleaning program.

[0083] The on-site inlet water can be routed directly to the heating device via valves integrated into the external unit, particularly solenoid valves. The external unit thus functions as a bypass, particularly during regular operation.

[0084] The valves can be used to temporarily draw acidic and / or alkaline water from the external unit and pass it on to the heating device.

[0085] The acid or alkali can be diluted with the inlet water depending on the desired pH value. Dilution also takes place in the external unit, e.g., by mixing with the inlet water.

[0086] To enable particularly simple dosing of the cleaning agent, a further development of the invention provides for the external unit to have a storage container for salt. The storage container can, in particular, contain salt tablets.

[0087] Furthermore, the storage container can comprise a device for feeding salt tablets directly into the electrolysis cell. In the simplest case, the device for feeding tablets is designed to dose one tablet. Depending on the electrolysis cell used, the invention provides for the device for feeding tablets to also be designed to dose multiple tablets. For example, in a two-part electrolysis cell, according to the invention, tablet dosage can take place on each side of the cell or only on one side of the cell.

[0088] An additional container in which the salt dissolves can optionally be omitted.

[0089] The disclosure further relates to an external unit with the electrolysis cell, which is designed for the heating device described above.

[0090] The disclosure further relates to a heating appliance, in particular an oven, which is designed to carry out the method described above.

[0091] Furthermore, the disclosure relates to a heating device, which can be designed in particular as a self-cooking center.

[0092] The heating appliance comprises a heatable cooking chamber and an electrolysis unit consisting of a storage container for a salt and an electrolysis cell with at least one ion exchange membrane for producing an acid and a base from the salt. The base can be transferred into the cooking chamber via at least one line.

[0093] For this purpose, the line can lead to a fan in the cooking chamber, where the acid and / or alkali can be atomized.

[0094] The electrolysis unit can optionally contain a storage tank for the acid and the alkali.

[0095] In particular, it is intended that the heating appliance includes a water connection.

[0096] The heating device is connected to a water pipe on site.

[0097] The preferred electrolysis cell is one that is divided into at least two chambers by at least one ion exchange membrane. This creates an anode chamber (positive electrode pole) and a cathode chamber (negative electrode pole).

[0098] For example, if sodium sulfate is used as the salt, applying a direct voltage to the electrodes produces sulfuric acid in the anode compartment and caustic soda in the cathode compartment. If a cation exchange membrane is used as the ion exchange membrane, the sodium ion migrates from the anode compartment across the cation exchange membrane into the cathode compartment. In the anode compartment, hydrogen ions are formed at the anode through water splitting, which combine with the existing sulfate ions to form sulfuric acid. The caustic soda is produced using the sodium ions from the anode compartment and the hydroxide ions formed at the cathode through water splitting.

[0099] If the anode and cathode compartments are separated by an anion exchange membrane, the sulfate ions migrate across the anion exchange membrane into the anode chamber after a direct current is applied to the electrodes. Sulfuric acid is formed with the hydrogen ions in the anode compartment, and sodium hydroxide solution is formed with the hydroxide ions and sodium ions in the cathode compartment.

[0100] Sodium sulfate was used as an example in the above-mentioned example. This also works equally well with all other inorganic salts, especially K 2 SO 4 .

[0101] In the case of chlorides, such as sodium chloride, a reducing agent, such as Na 2 SO 3 (sodium sulfite) or Na 2 SO 3 (sodium thiosulfate), can be added to the salt. This prevents the formation of free chlorine.

[0102] Furthermore, an organic salt, such as sodium citrate or sodium malate, can be used. In the former case, citric acid and sodium hydroxide are formed; in the case of sodium malate, malic acid and sodium hydroxide are formed.

[0103] The advantage of these organic salts is the formation of a weak acid and a strong alkali.

[0104] The advantage of the present disclosure is the in situ generation of an alkali for cleaning the hot appliance and the simultaneous in situ generation of an acid for dissolving the deposits on the surfaces that arise during cleaning.

[0105] The acid and alkali are produced from their salts. There is no need to transport or store irritating or corrosive chemicals.

[0106] The advantage of organic salts is the production of a weak acid that does not cause corrosion in the heating device.

[0107] If tap water is used to dissolve the salt, a softening system can be installed upstream. This will prevent limescale deposits in the cathode chamber.

[0108] Another way to prevent limescale deposits is to reverse the polarity of the electrodes. Depending on the water hardness, the electrodes can be reversed before an electrolysis process. Deposits, especially limescale deposits, in the cathode compartment are dissolved after the electrodes are reversed before the start of the in situ process, as the former cathode compartment becomes the anode compartment. The acid generated in the anode compartment dissolves the previously formed deposits. The amount of acid used to dissolve the deposits is negligible compared to the amount of acid generated.

[0109] For example, 1 liter of acid is produced with a concentration of 0.1 to 1, especially 0.5 mol / l. For example, if tap water with a hardness of 40 °d is used, a maximum of 7.12 mmol of hardness can be obtained.

[0110] The acid is formed as anolyte at the anode and the alkali as catholyte at the cathode.

[0111] Afterwards, the lye and then the acid can be fed from the respective optional storage container into the heated room.

[0112] In one embodiment of the invention, the acid or alkali is added in diluted form, in particular via a water pipe which leads into the heatable room and which is connected to the on-site water pipe during the introduction of alkali and / or acid.

[0113] The heating device preferably comprises a non-volatile memory on which at least one cleaning program is stored.

[0114] In particular, the heating device is designed to prompt the user to clean the heated room at software-defined or calculated intervals (e.g., based on operating time, time since the last cleaning, and / or completed baking programs). It only needs to be ensured that there is still a sufficient amount of salt in the salt container. This can also be detected automatically. If salt tablets are used, for example, the availability of salt tablets can be determined by counting the number of dispensed tablets.

[0115] The user then simply needs to start the cleaning program. The door to the heated room is preferably automatically locked until the cleaning program is complete. After cleaning with lye, a final rinse with acid can be performed.

[0116] According to one embodiment, the storage container is designed as a cartridge with salt tablets.

[0117] In particular, the heating device includes the feeding device for salt tablets.

[0118] In the salt tablet feeding device, the cartridge can be designed as a rotating drum with salt tablets.

[0119] In particular, the cartridge comprises a plurality of slots in which the salt tablets are stacked.

[0120] When the cartridge, which is preferably designed as a drum, is rotated by a drive, at least one salt tablet is separated and preferably released directly into the electrolysis cell.

[0121] The separation and dispensing of at least one salt tablet can be carried out in particular by a link which, when the drum rotates, moves at least one salt tablet radially outwards so that it falls into the electrolysis cell via an opening.

[0122] Exemplary embodiments of the invention are defined in the following elements 1. A heating appliance, in particular an oven, smoker, washing machine, or dishwasher, comprising a heatable space, wherein the heating appliance is connected to a unit or comprises a unit having a storage container for a salt or a salt solution and an electrolysis cell with at least one ion exchange membrane for producing an acid and an alkali from the salt, wherein the acid and / or alkali can be transferred into the heating space via a line, and wherein the heating appliance comprises a control device designed to execute at least one cleaning program, wherein the unit can be controlled via the control device. 2. A heating appliance according to the preceding element, characterized in that the unit is connected to the heating appliance via a communication line. 3. A heating appliance according to one of the preceding elements, characterized in that the heating appliance is connected to the unit via a single water line. 4.Heating appliance according to one of the preceding elements, characterized in that inlet water can be passed directly to the heating appliance via the unit. 5. Heating appliance according to one of the preceding elements, characterized in that the unit comprises a storage container for salt, in particular as a solid, in particular for salt tablets. 6. Heating appliance according to the preceding element, characterized in that the storage container is designed as a cartridge with salt tables. 7. Heating appliance according to the preceding element, characterized in that the storage container comprises a device for feeding salt tablets into the electrolysis cell. 8. Heating appliance according to one of the preceding elements, characterized in that the heating appliance comprises a non-volatile memory on which at least one cleaning program is stored. 9. Heating appliance according to the preceding element, characterized in that the unit is designed as an external unit. 10.External unit with an electrolysis cell, designed for a heating appliance according to one of the preceding elements. 11. Method for cleaning a heating appliance with a heatable chamber, in particular the cooking or baking chamber, the smoking chamber, the drum or the cleaning chamber of the heating appliance, in particular an oven, a smoking oven, a washing machine or a dishwasher, wherein a lye and an acid are produced from a salt by means of an electrolysis cell with at least one ion exchange membrane, wherein the lye is flushed into the heatable chamber for cleaning. 12. Method for cleaning a heating appliance with a heatable chamber, in particular according to the preceding element, wherein a lye and an acid are produced from a salt solution by means of an electrolysis cell, wherein the electrolysis cell comprises at least one ion exchange membrane, a cation exchange membrane, an anion exchange membrane or a bipolar exchange membrane.13 . Method according to one of the preceding elements, characterized in that the salt is an inorganic salt, in particular a sulfate, phosphate, bicarbonate or an organic salt, in particular a carboxylate. 14 . Method according to one of the preceding elements, characterized in that the salt is added to the electrolysis cell as a solid. 15 . Method according to one of the preceding elements, characterized in that after rinsing with the alkali, the heatable space is rinsed with the acid, and / or characterized in that the heatable space is heated during cleaning, in particular to a temperature between 40 and 90 °C, and / or characterized in that steam is passed into the heatable space for cleaning. 16. Heating appliance, in particular an oven, smoker, washing machine or dishwasher, designed to carry out a method according to one of the preceding elements. 17 .Heating appliance, in particular according to the above element, comprising a heatable chamber and an electrolysis unit consisting of a storage container for a salt and an electrolysis cell with at least one ion exchange membrane for producing an acid and an alkali from the salt, wherein at least the alkali can be transferred into the chamber via a line. 18 . Heating appliance according to the above element, characterized in that the line leads to a fan in the chamber. 19 . Heating appliance according to one of the above elements, characterized in that the heating appliance and / or the unit each comprise a storage container for the acid and the alkali, wherein the heating appliance optionally comprises a water connection for an on-site water line, wherein the water can be flushed into a salt container and wherein a salt solution can then be fed into the electrolysis cell. 20 .Feed device for salt tablets, in particular designed for a heating appliance according to one of the preceding elements, comprising a cartridge designed as a rotatable drum, in which the salt tablets are stacked in a plurality of shafts. 21. Feed device according to the preceding element, characterized in that the feed device comprises a link which moves a salt tablet radially outwards when the drum rotates. 22. Electrolysis cell, in particular for a heating appliance according to one of the preceding elements, comprising a partition wall, wherein an insert with an ion exchange membrane is inserted into the partition wall. 23. Electrolysis cell according to the preceding element, characterized in that the ion exchange membrane is prestressed in the insert, in particular by means of a sealing lip resting against the ion exchange membrane. Brief description of the drawings

[0123] The subject matter of the invention will be explained below with reference to the drawings Fig. 1 to Fig. 13 will be explained in more detail using schematically illustrated embodiments. Fig. 1 and Fig. 2 each show a schematic representation of a heating device. Fig. 3 and Fig. 4 show alternative embodiments. Fig. 5 shows a feeding device for salt tablets. Fig. 6a to 6d show the cartridge of the feeder Fig. 7a to Fig. 7c shows the separation and feeding of a salt tablet. Fig. 8a and 8b are schematic representations of an electrolysis cell. Fig. 9a to Fig. 9d are a representation of an ion exchange membrane, which is designed as an insert in the wall of the electrolysis cell. Fig. 9e is a perspective view of the electrolysis cell with the insert. Fig. 9f is a central longitudinal section of the electrolysis cell. Fig. 9gshows another embodiment of an insert with an ion exchange membrane in a central longitudinal section. Fig. 9h is another view of a feeding device and electrolysis cell. Fig. 9i is a perspective view. Fig. 9j is a detailed view of area B of the Fig. 9i . Fig. 9k is a cross-section of the feeding device. Fig. 9l is a cross-section of the drive of the feeding device. Fig. 9m is a detailed view of the feeder without cartridges inserted. Fig. 9n is a perspective view of another embodiment of a cartridge. Fig. 9o is a cutaway view of the electrolysis cell. Fig. 10 is a flowchart according to an embodiment of the method. Fig. 11 is a schematic representation of a dishwasher. Fig. 12 is a schematic representation of a washing machine. Fig. 13 is a schematic representation of a smoker. Detailed description of the drawings

[0124] Fig. 1 and Fig. 2 shows in a schematic representation an embodiment of a heating device, namely an oven 10.

[0125] Fig. 1 is a top view of the front, Fig. 2 is a schematic view from the side.

[0126] As initially stated with reference to Fig. 2 As shown, the furnace 10 is connected to an external unit 5 which comprises an electrolysis cell.

[0127] The external unit 5 comprises a housing 25 with a water inlet 26 and a water outlet 27.

[0128] Furthermore, the external unit 5 comprises a mains connection 28.

[0129] The water outlet 27 of the external unit 5 is connected to the oven 10 via a single water pipe 6.

[0130] This means that nothing needs to be changed on the connection side of the oven 10 compared to a conventional oven; a single water connection is sufficient.

[0131] At least lye, but preferably also acid, can be supplied to the furnace via the external unit 5.

[0132] The furnace is also connected to the external unit via communication line 7 and controls it. Structurally, furnace 10 is solely controlled by modified software, which, depending on the program called, retrieves acid, alkali, or inlet water.

[0133] The oven 10 comprises a cooking chamber 11, which is closed with the door 12 (see Fig. 1 ).

[0134] The cooking chamber 11 can be opened and closed via a lockable handle 13, for example in order to insert food to be prepared into the cooking chamber 11 using the removable shelves 14.

[0135] The oven 10 further includes a fan 15, which circulates the air present in the cooking chamber 11. Not shown are the heating device for heating the cooking chamber 11 and a steam generator, by means of which steam can be introduced into the cooking chamber 11. In this embodiment, the oven 10 is thus equipped as a self-cooking center and includes a display 16, via which various programs for preparing food can be selected.

[0136] The oven 10 further comprises a water connection, which is connected via the line 2 to a water connection 1 on site (see Fig. 2 ). The intermediate external unit 5 forms a bypass in an operating state, so that the furnace is directly connected to line 2.

[0137] Furthermore, the furnace 10 comprises a waste water connection which is connected to the channel 3 via a waste water pipe 4.

[0138] Water can be supplied to the furnace 10 via the water pipe 2 to generate steam.

[0139] Furthermore, the oven 10 comprises means for cleaning the cooking chamber 11 using a lye.

[0140] The lye is provided via the external unit 5.

[0141] A salt container 17 can be opened by the user and salt, preferably in solid form, can be added.

[0142] Water from line 2 can be fed to the salt container 17 via valve 19a. A salt solution then forms in the salt container 17 until the saturation limit is reached.

[0143] The salt solution from the salt container 17 can be fed to an electrolysis cell 20, which is located in the housing 25 of the external unit.

[0144] The electrolysis cell 20 comprises an anode 21 and a cathode 22.

[0145] The electrolysis cell 20 is designed as a split electrolysis cell in which the anolyte is separated from the catholyte, as described below with reference to Fig. 7a and Fig. 7b is shown.

[0146] The anolyte, i.e., the acid, can be collected in an optional reservoir 18a. The catholyte can be collected in the optional reservoir 18b.

[0147] Water from line 2 can be fed to the furnace 10 via the valve 19b.

[0148] The acid can be supplied to the cooking chamber 11 via valve 19c and the alkali, optionally diluted, via valve 19d by simultaneously opening valve 19b. The valves 19a-19d can be designed, in particular, as solenoid valves.

[0149] For this purpose, the user can call up a cleaning program via the display 16, whereby the lye is first atomized in the cooking chamber 11 and cleans the cooking chamber 11 while heating it.

[0150] According to the cleaning program, the external unit 5, in particular its valves 19a-19d, is controlled.

[0151] After cleaning with the alkali, the acid can then be added as a final rinse. Further cleaning steps can be performed with water or steam, for example, to remove alkali or acid residues.

[0152] Fig. 3 shows a opposite Fig. 1 / Fig. 2 alternative embodiment.

[0153] In contrast to the above-mentioned embodiment, the salt container 17 is designed as a storage container for salt tablets and comprises a feed device via which the salt tablets are dosed directly into the electrolysis cell 2.

[0154] Otherwise, the external unit 5 is identical.

[0155] Fig. 4shows an embodiment in which no external unit is provided. The components that would otherwise be present in the external unit are integrated into the housing of the oven 10. The salt container 17 can, as in Fig. 4 as a container for salt, in particular in solid form, or as a container for salt tablets according to the above explanations with regard to Fig. 3 be trained.

[0156] Fig. 5 shows a feeding device 60 for salt tablets with an electrolysis cell 20.

[0157] In this embodiment, the feed device 60 comprises two cartridges 61a, 61b designed as drums, in which a plurality of salt tablets are arranged. The cartridges 61a, 61b are mounted on a holder 63.

[0158] The receptacles 63 are arranged on a cover 62 for the electrolysis cell 20.

[0159] At least one salt tablet can be dispensed into the electrolysis cell 20, which is preferably designed in two parts, via the two cartridges 61a, 61b present in this embodiment.

[0160] Fig. 6a is a perspective view of a cartridge 61.

[0161] The cartridge 61 is closed at the bottom with a lid 69. This protects the salt tablets in the cartridge 61 from moisture during transport, for example.

[0162] The cartridge 61 is otherwise designed as a drum with a plurality of slots 64a-64f. The salt tablets are stacked in the slots 64a-64f.

[0163] This is shown in the sectional view according to Fig. 6b shown.

[0164] Each shaft contains a stack of salt tablets 65a to 65n. The drive for the drum-shaped cartridge 61 can be arranged in the central space between the shafts 64a-64f (not shown).

[0165] Fig. 6c and Fig. 6d are views of the underside of cartridge 61, with the lid now removed.

[0166] Preferably, the salt tablets 65 are secured against falling out even when the lid is removed.

[0167] This is realized in this embodiment in that the cartridge 61 comprises a ring 66, in particular a clamping ring 66, which is rotatable relative to the rest of the cartridge.

[0168] A slider 67, which projects below the tablet 65, can be moved away via the rotatable ring 66, thus releasing the tablet 65.

[0169] For this purpose, the rotatable ring 66 comprises a guide slot 68, which can be designed, for example, as an elongated hole into which a pin engages.

[0170] The rotatable ring 66 further comprises engagement elements 110 for the rotationally fixed connection of the cartridge 61 to the receptacle (63).

[0171] The cartridge 61 is inserted into the receptacle 63. By turning a ring 163 of the receptacle 63, the slides 67 are moved radially outwards under the stacks of salt tablets 65 and release them (see also Fig. 9m ) .

[0172] At the same time, the outwardly moving slides 67 lock the cartridge in the holder.

[0173] As in Fig. 6d As shown, by rotating the ring 66 relative to the housing of the cartridge 61, the slides 67 are moved outwards so that the tablets 65 can now move downwards and then rest on the holder for the cartridge 61.

[0174] The retraction of the slides preferably takes place when the cartridge 61 is mounted on the holder by rotating the cartridge housing relative to the ring 66.

[0175] Fig. 7a is a perspective view of the cartridge's receptacle 63 and ring 66. The cartridge housing is hidden.

[0176] In Fig. 7b Part of the housing of the holder is hidden. A hole 70 is now visible, through which an isolated tablet falls into the electrolysis cell.

[0177] The separation and dispensing of the tablets 65 is in Fig. 7cshown. When the cartridge, which is designed as a drum, is rotated, in this embodiment by 60° each time, a single tablet 65 is moved radially outward by a slotted guide 71 arranged centrally at the bottom of the receptacle and falls into the hole 70. The hole 70 is otherwise preferably closed with a flap, in particular a gravity-operated flap (not shown).

[0178] The tablet arranged above the dispensed tablet 65 slides down a ramp 72 of the slide 71 to one level lower and is then ready for separation and dispensing into the electrolysis cell during the next rotation of the cartridge.

[0179] Fig. 8a shows the electrolysis cell 20 used as an in situ device for producing an acid or a base in a 3-chamber system.

[0180] The salt or salt solution is located in the middle chamber, the acid is generated in the anode chamber with the anode 21, and the alkali is generated in the cathode chamber with the cathode 22. Polarity reversal is not possible in this electrolysis cell 20.

[0181] Therefore, water treatment for softening or reverse osmosis or a mixed bed for demineralization of the water for brine formation is preferably used in the water supply (not shown).

[0182] The middle chamber is separated from the acid and alkali chambers by the anion exchange membrane 23 and the cation exchange membrane 24, respectively. Salt is removed from the middle chamber, with the sulfate ions, for example, migrating through the anion exchange membrane 23 into the cathode compartment, and the sodium ions migrating through the cation exchange membrane 24 into the cathode compartment.

[0183] Fig. 8b shows an alternative usable two-part electrolysis cell 20.

[0184] This comprises an anion exchange membrane 23 or a cation exchange membrane 24, which divides the cell into a cathode and an anode chamber.

[0185] The anions or, depending on whether an anion exchange membrane 23 or a cation exchange membrane 24 is used, the cations can pass through the membrane which separates the anolyte from the catholyte.

[0186] Advantage of the Fig. 8b The advantage of the embodiment shown is that this electrolysis cell can be reversed before each use, thereby reducing deposits on the electrodes.

[0187] The Fig. 2 , Fig. 3 and Fig. 4 The optional storage containers (18a, 18b) shown are then used alternately as acid or alkali containers.

[0188] According to one embodiment, a portion of the acid from the anode chamber can also be used to dissolve the deposits in the cathode chamber (not shown).

[0189] The electrolysis cells described above may in particular comprise a partition wall (25) with an ion exchange membrane, as shown in Fig. 9a - Fig. 9d is shown.

[0190] Fig. 9a shows a partition 25 for an electrolysis cell. The partition includes an opening 82 into which insert 80 with an ion exchange membrane is inserted.

[0191] In this embodiment, the insert 80 is circular.

[0192] Fig. 9b is a perspective view of the insert 80. The insert 80 comprises two plates 83a, 83b, between which the ion exchange membrane sits.

[0193] The plates 83a, 83b are perforated.

[0194] In this embodiment, several rows of passages 84a - 84d extend annularly over the plates 83a, 83b.

[0195] Fig. 9c is a central longitudinal section of insert 80.

[0196] The plates 83a, 83b are connected to each other via a threaded connection 85.

[0197] In this embodiment, the plate 83a comprises an external thread which is screwed into an internal thread of a collar of the plate 83b.

[0198] An ion exchange membrane, designed as an anion or cation exchange membrane 23 / 24, is clamped at the edge between the plates 83a and 83b.

[0199] The plates 83, 84 include circumferential seals 86 to seal the insert 80 into the opening of the partition wall.

[0200] Fig. 9d is a detailed view of area X of the Fig. 9 . Between the plates there is a lip seal 87 which pre-tensions the ion exchange membrane (23 / 24) via the sealing lip 88.

[0201] The lip seal 87 is inserted into one of the plates and held in a form-fitting manner between the plates, with a main body of the lip seal 87 resting against an extension 89 which projects radially inwards.

[0202] The sealing lip 88 projects in the direction of the opening 84d into an annular groove of the plate and thus presses against the ion exchange membrane 23 / 24.

[0203] When the ion exchange membrane (23 / 24) expands due to contact with the electrolyte, the sealing lip 88 springs toward the opening 84d, thus keeping the ion exchange membrane (23 / 24) taut. This increases the efficiency of the electrolysis cell.

[0204] The wet state of the ion exchange membrane (23 / 24) is shown. Its surface area has increased due to the electrolyte, which is compensated for by the resilient sealing lip 88. In the dry state (not shown), the sealing lip 88 does not resiliently, or at least to a lesser extent.

[0205] The ion exchange membrane (23 / 24) can in particular be designed as an anion exchange membrane made of a polyester material.

[0206] Fig. 9e shows an electrolysis cell 20 equipped with the insert described above. The electrolysis cell 20 is designed as a container, preferably made of plastic, and is divided into two chambers by the partition wall 25.

[0207] The electrolysis cell 20 may include mounting tabs 27 which project to the side.

[0208] Each chamber of the electrolysis cell 20 contains an electrode (21 / 22). The electrodes (21 / 22) are designed as plate electrodes. The electrodes (21 / 22) are angled at the top, forming a handle for removing the electrodes (21 / 22) from the respective chamber.

[0209] The electrodes (21 / 22) are inserted into electrode holders 26, which are arranged on the wall of the respective chamber. The electrode holders 26 include at least one groove for inserting the electrode. In this embodiment, several grooves are provided to allow the spacing between the electrodes to be varied.

[0210] Fig. 9f is a central longitudinal section through the Fig. 9e Electrolysis cell 20 shown.

[0211] The insert 80 is inserted into an opening in the partition wall 25 and sealed to the partition wall 25 by the circumferential seals 86.

[0212] The electrodes (21 / 22) are inserted into a groove of the electrode holders 26, whereby in this embodiment, an upper and a lower electrode holder 26 are provided. Acid or alkali can be removed via the outlets 27a, 27b. This can be collected in a storage container, as previously described.

[0213] Preferably, the electrodes (21 / 22) are reversed regularly to reduce the formation of deposits.

[0214] Fig. 9g is a further embodiment of an insert 80. In the following, the advantages compared to the one with reference to Fig. 9a - Fig. 9d The differences are explained in the application shown.

[0215] In this embodiment, the insert 80 comprises two coaxially arranged lip seals 87. This further improves the prestressing of the ion exchange membrane (23 / 24).

[0216] A lip seal 87 is arranged in the plate 83a and another lip seal 87 is arranged in the plate 83b.

[0217] The ion exchange membrane (23 / 24) is inserted sealingly between the plates 83a, 83b.

[0218] During assembly, the ion exchange membrane (23 / 24) is clamped between the plates 83a and 83b under the sealing lip 88. The dry ion exchange membrane (23 / 24) is so rigid that the sealing lips 88 now compress and rest resiliently against the ion exchange membrane (23 / 24).

[0219] Upon contact with the electrolyte, the surface area of ​​the ion exchange membrane (23 / 24) increases. The sealing lips 88 compress, thus tensioning the ion exchange membrane (23 / 24) to the wet state shown here.

[0220] The ion exchange membrane (23 / 24) can have a diameter between 30 and 500 mm, in particular between 50 mm and 200 mm.

[0221] At the edges, the ion exchange membrane (23 / 24) is clamped between two flat seals 90. In this area, the ion exchange membrane (23 / 24) is not in contact with water.

[0222] Fig. 9his another view of a feed device 60 together with electrolysis cell 20.

[0223] The feed device 60 comprises two rotatable cartridges 61 designed as drums, each of which is inserted into a receptacle 63. As described above, the cartridges 61 can be connected to the receptacles 63.

[0224] The receptacles 63 are rotatably mounted on a base 73. The cartridges 61 thus rotate with the receptacles 63.

[0225] The base 73 also serves as a cover for the electrolysis cell 20.

[0226] The mounts 63 are each rotated by an electric motor 74. In the exemplary embodiment, the motor 74 is located under the floor 73.

[0227] The unit shown here, consisting of the feed device 60 and the electrolysis cell 20, can be used either as an external unit or installed in a heating device.

[0228] Terminals 75 serve as inputs and outputs. The corresponding cables are not shown.

[0229] Fig. 9i is a perspective view of the unit comprising the feed device 60 and the electrolysis cell 20.

[0230] The receptacles 63 comprise drivers 77, via which a flap 76 is opened.

[0231] Fig. 9j is a detailed view of area B of the Fig. 9i .

[0232] When the holder 63 is rotated, the flap 76 is moved to the side via the driver 77 arranged on the edge and opens an opening or hole through which the separated salt tablet falls into the electrolysis cell.

[0233] In this embodiment, the flap 76 comprises an extension 78 against which the driver 77 moves to open.

[0234] Fig. 9k is a cross-section of the feed device in the area of ​​flap 76.

[0235] The flap 76 is pivotally mounted around the flap guide 79b.

[0236] On the opposite side is the flap guide 79a, which extends over the edge of the flap 76. Shown here is the open state, in which the driver 77 has completely opened the flap 76.

[0237] The flap guide 79a ensures that the flap 76 does not swing upwards or bend upwards when opened.

[0238] A spring (not shown) is preferably provided to close the flap 76. This spring can be hooked onto the spring receptacle 74. The rotatable receptacle 63, in turn, includes slots into which the stacks of salt tablets fall after the cartridge is installed.

[0239] The shafts of the receptacle 63 preferably have a larger diameter than the shafts of the cartridge and / or than the salt tablets.

[0240] When the holder 63 is rotated, in this embodiment clockwise, the bottommost salt tablet is pushed radially outward by the slotted guide 71 and falls through the opened hole into the electrolysis cell. Depending on the salt tablets used, the slotted guide can also be so high that several salt tablets are separated at once, especially two tablets at a time.

[0241] The salt tablets arranged above slide one level lower as the rotation continues along the guide 71, which is at least partially designed as a ramp 72, so that the next salt tablet can then be separated and released into the electrolysis cell during the next rotation.

[0242] Fig. 9l is a cross-section of the drive.

[0243] The electric motor 100 drives a gear 101, which drives the larger gear 102.

[0244] The gear 102 is connected to the drive shaft 104 for receiving the cartridges. A reduction gear is provided via the gear transmission.

[0245] Fig. 9m is a detailed view of the feeding device 60 and Fig. 9n is a perspective view of an embodiment of a slightly modified cartridge 61.

[0246] The cartridge 61 is shown in accordance with Fig. 9m not inserted into the feed device 60.

[0247] The receptacle 63 for the cartridge 61 comprises a base 164.

[0248] In the connected state, the cartridge 61 is connected in a rotationally fixed manner to the base 164 of the holder 63.

[0249] For this purpose, in this embodiment, engagement elements 111 are provided on the cartridge 61, which, when connected, engage the holes 168 of the base 164. A ring 163 is rotatably mounted on the base 164.

[0250] To connect, the cartridge 61 is inserted into the receptacle 63. Then, the ring 163 of the receptacle 63 is rotated.

[0251] The ring of the receptacle 163 is connected in a rotationally fixed manner to the ring 66 of the cartridge 61. For this purpose, the ring 66 of the cartridge 61 comprises peripheral engagement elements 110, which engage in grooves 165 of the ring 163 of the receptacle 63.

[0252] When the ring of the holder 163 is turned, the ring 66 of the cartridge 61 also turns.

[0253] Due to the guide rail, the slides 67 are moved away from under the tablet shafts. At the same time, the slides 67 move outward and lock the cartridge 61 in the slots 164 of the ring 163 of the holder 63.

[0254] The tablets can now slide from the shafts of the cartridge 61 into the shafts 167 of the holder 63 and are ready for separation and delivery into the electrolysis cell.

[0255] Fig. 9ois a cutaway view of another embodiment of an electrolysis cell 20.

[0256] This is designed as described above and divided into two chambers.

[0257] The insert 80 with the ion exchange membrane is located in the partition wall 25.

[0258] The electrodes, i.e. anode and cathode 21 / 22, protrude into the chamber from above.

[0259] Additionally, in Fig. 9e and Fig. 9f In the embodiment shown, there is a sieve insert 28 in each of the chambers.

[0260] Due to the sieve insert 28, the salt tablets do not sink to the bottom of the electrolysis cell 20, but can dissolve in a central area in the chambers and are washed around from all sides.

[0261] Fig. 10 is a flowchart according to an embodiment of the described method.

[0262] First, a sodium sulfate salt, which is present as granules, is dissolved and the resulting salt solution is fed into the electrolysis cell, producing a sulfuric acid solution and sodium hydroxide solution.

[0263] The collected caustic soda is fed into the baking chamber after the cleaning program has started. Optionally, the caustic soda can be fed into the baking chamber in diluted form.

[0264] After cleaning with caustic soda, the furnace can optionally be rinsed with diluted sulfuric acid solution.

[0265] The oven is then rinsed with water again, and the cleaning program ends. The door is unlocked, and the oven can be used for food preparation again.

[0266] Fig. 11 is a schematic representation of a dishwasher 30.

[0267] The dishwasher 30 comprises a flap 31 which can be opened via the handle 32.

[0268] The heated compartment, which includes inserts for cutlery and crockery (not shown), is accessible via the flap 31.

[0269] The dishwasher 30 is, as shown in Fig. 2 / 3 , connected to an external unit 5 with an electrolysis cell, which serves to produce acid and alkali. Regarding the design of the external unit, please refer to the description of Fig. 2 / 3 The resulting lye can be used to rinse dishes and cutlery. The used acid is preferably also collected in an optional storage container and can optionally be used to rinse dishes and cutlery.

[0270] The same applies to the Fig. 12 schematically illustrated washing machine 40. The washing machine 40 is also connected to an external unit 5 with an electrolysis cell.

[0271] After opening the door 41, the drum 42 is accessible, which can be filled with laundry.

[0272] Fig. 13 shows a schematic representation of a smoker 50.

[0273] The smoker 50 includes a door 51 through which the smoke chamber is accessible. The smoker 50 also includes the chimney 52.

[0274] According to the Fig. 2 / 3 In the oven shown, the external unit 5 can produce lye and / or acid to clean the smoking chamber.

[0275] The invention made it possible to provide a simple and environmentally friendly way of cleaning hot appliances, especially for catering and industry.

[0276] It will be apparent to those skilled in the art that the invention is not limited to the examples described above, but rather can be varied in many ways. In particular, the features of the individually presented examples can also be combined with one another or interchanged. List of reference symbols:

[0277] 1 Water connection 2 Pipe 3 Channel 4 Waste water line 5 External electrolysis unit 10 Oven 11 Cooking chamber 12 Door 13 Handle 14 Floor 15 Fan 16 Display 17 Salt container 18a, 18b Storage container (optional) 19a-19d Valve 20 Electrolysis cell 21 Anode 22 Cathode 23 Anion exchange membrane 24 Cation exchange membrane 25 Partition wall 26 Electrode holder 27a, 27b Outlet 28 Sieve insert 30 Dishwasher 31 Flap 32 Handle 33 Operating module 40 Washing machine 41 Door 42 Drum 43 Operating module 44 Dosing container 50 Smoking oven 51 Door 52 Chimney 60 Feeding device 61, 61a, b, cCartridge 62Cover 63Receptacle 64a-64fShaft 65, 65a-nSalt tablet 66Ring / clamping ring 67Slider 68Guide slot 69Cover 70Opening 71Slot 72Ramp 73Bottom 74Spring holder 75Connections 76Flap 77Carrier 78Extension 79a, 79bFlap guide 80Insert 82Opening 83a,83bPlate 84a-84dPassage 85Threaded connection 86Seal 87Lip seal 88Sealing lip 89Extension 90Flat seal 100Motor 101Gear 102Gear 104Drive shaft of the holder 63 110Engaging element 111Engaging element 163Receptacle ring 164Slot 165Groove 166Base 167Shaft 168Hole,

Claims

1. Feeding device for salt and / or cleaning tablets, comprising a cartridge designed as a rotatable drum in which the salt and / or cleaning tablets are stacked in a plurality of shafts.

2. Feeding device according to the preceding claim, characterized in that the feeding device comprises a link which moves a tablet radially outwards when the drum rotates.

3. Feeding device according to one of the preceding claims, characterized in that the slide is designed in such a way that a stack of tablets slides one level lower when moving over the slide.

4. Feeding device according to one of the preceding claims, characterized in that the cartridge can contain three to nine, preferably five to seven shafts.

5. Feeding device according to one of the preceding claims, characterized in that the feeding device for dispensing the tablets comprises a hole arranged in the bottom.

6. Feeding device according to the preceding claim, characterized in that the hole is closed with a flap.

7. Feeding device according to one of the preceding claims, characterized in that the flap is opened via a driver, in particular a driver of a cartridge holder.

8. Feeding device according to one of the preceding claims, characterized in that the feed device comprises two cartridges designed as rotatable drums.

9. Feeding device according to one of the preceding claims, further comprising an electrolysis cell to which salt tablets can be fed.

10. Feeding device according to the preceding claim, characterized in that the electrolysis cell is divided into two chambers, with salt tablets being able to be fed into each of the chambers, and / or that the cartridge is rotatable by means of an electric motor.

11. Electrolysis cell, in particular with a feed device according to one of the preceding claims, comprising a partition wall, wherein an insert with an ion exchange membrane is inserted into the partition wall.

12. Electrolysis cell according to the preceding claim, characterized in that the ion exchange membrane is prestressed in the insert, in particular by means of a sealing lip adjacent to the ion exchange membrane.

13. Cartridge adapted for a feed device according to one of the preceding claims.

14. Cartridge according to the preceding claim, characterized in that the cartridge includes a rotating ring that operates sliders that release the slots containing the tablets.

15. A heating appliance, in particular an oven, smoker, washing machine or dishwasher, comprising an electrolytic cell with a feed device according to one of the preceding claims.

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