Cleaning inserts for removable placement in the cooking space of a cooking appliance.

Abstract

A cleaning insert (11) is removably arranged in the cooking space (4) of the cooking apparatus (1). The cleaning insert includes a receiving device (13) for reversibly fixing a cleaning unit (12) having a cleaning composition and a support (14) connected to the receiving device (13) for positioning the receiving device (13) relative to the cooking space (4).

Description

[0001] This patent application claims priority to German patent application DE 10 2020 204 707.3, the contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to a cleaning insert for removably disposed in the cooking space of a cooking apparatus. Further, this invention relates to a cleaning unit for the cleaning insert. The invention also relates to a cleaning assembly comprising the cleaning insert and the cleaning unit. The invention further relates to a method for cleaning the cooking chamber of a cooking apparatus. Background Technology

[0003] Based on prior use, cooking appliances in the form of steam ovens are known, whose cooking chambers can be cleaned using cleaning compositions. To accommodate and dispense the cleaning composition within the cooking space, a device requiring significant installation space is mounted on the wall of a cooking chamber, which is destructive during cooking and susceptible to buildup of stubborn contaminants. Summary of the Invention

[0004] Therefore, the object of the present invention is to provide an improved cleaning plug that is particularly capable of cleaning the cooking space thoroughly and occupies as little available installation space as possible.

[0005] This objective is achieved by a cleaning insert for removably arranging in the cooking space of a cooking apparatus, comprising: a receiving device for reversibly securing a cleaning unit containing a cleaning composition; and a support connected to the receiving device for positioning the receiving device relative to the cooking space. It has been found that the cleaning insert (which includes: the receiving device for reversibly securing a cleaning unit comprising a cleaning composition; and the support connected to the receiving device for positioning the receiving device relative to the cooking space) can be movably arranged within the cooking space, thereby fully maintaining the cooking space during cooking and thus enabling particularly thorough cleaning of the cooking chamber. The cooking space is not limited by the device used to receive the cleaning composition. Such devices, which are easily contaminated during cooking, can be avoided. In particular, the removability of the cleaning insert from the cooking space allows the cleaning unit attached to the receiving device to be positioned in the central area of ​​the cooking space. Due to the mobility of the cleaning insert, this central area required for the cooking process can be released again after the cleaning process. Arranging the cleaning unit in the central area ensures a particularly uniform distribution of the cleaning composition within the cooking space. Therefore, the cleaning process is particularly efficient and energy-saving.

[0006] The receiving device is configured to create a detachable connection with the cleaning unit. In particular, the receiving device ensures that the cleaning unit can be received without being lost. For example, the receiving device can be configured to completely define the position and / or orientation of the cleaning unit relative to the support. The receiving device can be configured such that at least one degree of freedom of the cleaning unit relative to the support, especially exactly one degree of freedom, particularly exactly one rotational degree of freedom, is open, i.e., unrestricted. At least one open degree of freedom allows the cleaning unit to be mounted on the support and / or ensures particularly uniform distribution of the cleaning composition in the cooking space by moving the cleaning unit relative to the support.

[0007] According to one aspect of the invention, the receiving device is configured to provide a non-form-fit and / or form-fit connection with the cleaning unit. The support body may be configured to provide a non-forward and / or forward connection with the cooking chamber and / or the cooking chamber door. Preferably, the receiving device is configured to establish and / or disengage a reversible connection with the cleaning unit without tools. The support body may be configured to establish and / or disengage a connection with the cooking chamber and / or the cooking chamber door without tools. Therefore, the cleaning plug can be used particularly easily and efficiently.

[0008] According to one aspect of the invention, the support is configured to attach the housing device to the cooking chamber and / or the cooking chamber door in a supporting and / or suspending manner. Suspended attachment is understood to mean that the center of gravity of the cleaning insert, particularly the center of gravity of the cleaning insert on which the cleaning unit is housed, is arranged vertically below the connection point between the support and the cooking chamber and / or the cooking chamber door. Advantageously, this ensures that the cleaning composition can be distributed particularly evenly in the cooking space, thereby enabling particularly efficient cleaning.

[0009] According to one aspect of the invention, the receiving device is arranged in the central region of the carrier for the food to be cooked. Preferably, in a top view, especially when the support is positioned in the cooking space in the intended manner, the receiving device is arranged in the central region of the cleaning insert, especially in the central region of the support, especially in the central region of the carrier for the food to be cooked, and / or in the central region of the cooking chamber. In a top view, the distance between the receiving device and the outer contour of the support is preferably at least 50 mm, especially at least 100 mm. Preferably, in a top view, the geometric center of the area of ​​the cleaning insert, especially the geometric center of the area of ​​the support, and / or the geometric center of the area of ​​the cooking chamber, is located within the outer contour of the receiving device. Advantageously, this ensures that the cleaning composition can be distributed in the central location of the cooking space, and thus particularly uniformly distributed throughout the cooking space.

[0010] The receiving device can be arranged, particularly along the main extending plane of the support for the food to be cooked, at a distance from the central region, especially from the geometric center of the support body. For example, the distance between the geometric center of the support body, particularly along the main extending plane of the support body, and the geometric center of the receiving device or the outline of the receiving device is at least 10 mm, especially at least 20 mm, especially at least 50 mm, especially at least 100 mm. This distance can be measured in the main extending plane of the support body, especially along the lateral and / or depth directions of the cooking space. Advantageously, the eccentric arrangement of the receiving device on the support body ensures that the cleaning unit can be positioned in an area of ​​the cooking space where the cleaning composition can be distributed more efficiently and evenly. Compared to the rest of the cooking space, the flow of air, steam, or water is increased in this area, for example. Therefore, the cleaning composition can be distributed and dispersed in the cooking space in a particularly efficient manner.

[0011] According to another aspect of the invention, the cooking apparatus is configured as an oven, particularly a baking oven and / or a steam cooking oven. The cooking apparatus preferably has a temperature regulating device for regulating the temperature in the cooking space, particularly by heating and / or via an automatic supply of water and / or steam.

[0012] To accommodate the cleaning unit in a way that prevents loss, the receiving device may have a locking element that can move in the reverse direction. Preferably, the cleaning unit cannot be removed from the cleaning insert, and especially from the receiving device, without moving the locking element from the locked position to the released position. For example, the locking element may be configured as a locking latch.

[0013] Preferably, the support has at least three, especially at least four, adjustable feet for positioning the cleaning plug on a positioning surface, especially a positioning plane.

[0014] According to another aspect of the invention, the support has a carrier for food to be cooked. The carrier for food to be cooked can be configured to hold cooking utensils, particularly a pot and / or an electric oven and / or a pan. The carrier for food to be cooked can also be configured to hold food to be heated, particularly a grill rack. Preferably, the support has the function of supporting the cooking process. Advantageously, this allows the cleaning plug to replace any necessary appliances in the kitchen. Therefore, the need for additional storage space for the cleaning plug can be avoided.

[0015] According to another aspect of the invention, the carrier for food to be cooked has a baking rack. Preferably, the carrier for food to be cooked is a baking rack. The baking rack may include multiple racks. Preferably, the racks are configured as a frame and a positioning surface for placing the food to be cooked. In any case, a baking rack is a device commonly needed in a kitchen. By configuring the carrier for food to be cooked as a baking rack, no additional storage space is needed in the kitchen to store cleaning supplies.

[0016] Alternatively, the support for the food to be cooked can be configured as a perforated plate and / or a baking tray.

[0017] According to another aspect of the invention, the housing is configured with at least one rod of the baking rack. Preferably, the housing is configured with at least two rods, and more precisely, two rods. At least one rod can be configured to rest against the cleaning unit, particularly in a rotatable manner. For this purpose, for example, at least one rod is at least partially configured as an arc.

[0018] According to another aspect of the invention, the support body has a track engagement for connection to the support track of the cooking apparatus. The support track of the cooking apparatus is preferably a track for accommodating a baking rack and / or a baking tray, particularly tracks arranged in pairs on opposite sidewalls of the cooking chamber.

[0019] According to another aspect of the invention, the receiving device has a form-fitting element for form-fitting connection with the cleaning unit. Preferably, the receiving device is configured to form a snap-lock and / or insert connection and / or latch connection with the cleaning unit. This ensures a particularly reliable connection between the cleaning unit and the receiving device, especially a connection that can be disassembled without tools.

[0020] Preferably, the cleaning insert is a baking rack with a housing device for arranging the cleaning unit in a secure manner, particularly for form-fitting connection to the cleaning unit, especially for connection to the cleaning unit in the form of a snap-lock.

[0021] Another object of the present invention is to provide an improved cleaning unit that is particularly easy to handle and ensures uniform distribution of the cleaning composition in the cooking chamber.

[0022] This objective is achieved by a cleaning unit for a cleaning insert as described above. The cleaning unit may have a cleaning composition, a chamber (in which the cleaning composition is arranged with a dispensing opening for dispensing the cleaning composition into the cooking space), and a reverse receiving device (for reversibly and securely attaching to the cleaning insert). The reverse receiving device may be configured for connection to a receiving device of the cleaning insert, particularly a receiving device for reversible and / or tool-free connection to the cleaning insert.

[0023] The chamber preferably comprises a heat-resistant material, particularly resistant to at least 100°C, particularly resistant to at least 150°C, particularly resistant to at least 200°C, particularly resistant to at least 250°C, and / or a water-insoluble material. The chamber may also be made of a water-soluble material and / or a fusible material, particularly fusible at temperatures up to 200°C, particularly up to 150°C, particularly up to 100°C. The chamber may also be made of a biodegradable material. Preferably, the chamber comprises at least one of the following materials: plastics, particularly polypropylene and / or polycarbonate and / or polyethylene and / or butadiene styrene acrylic acid and / or biopolymers, particularly polylactic acid.

[0024] The chamber preferably has exactly one, especially at least one, and particularly at least two dispensing openings. A chamber configured with two dispensing openings can be flushed with a cleaning liquid to dispense the cleaning composition particularly efficiently. For this purpose, a line connection for connection to a water line can be arranged at at least one dispensing opening.

[0025] The cleaning composition preferably comprises at least one, particularly at least two, and especially at least three, cleaning ingredients. The cleaning ingredients may be mixed together or may exist individually within the chamber. Preferably, at least two cleaning ingredients are separated by at least one sealing layer. Preferably, the chamber is divided into at least two separate partial chambers by at least one sealing layer. Additional sealing layers may be arranged between the dispensing opening and the cleaning composition, or at the dispensing opening. Advantageously, this ensures that the cleaning composition is securely sealed within the chamber before use.

[0026] The cleaning composition may include liquid and / or solid, particularly powder and / or granular cleaning ingredients. Preferably, the cleaning composition includes at least one of the following cleaning ingredients: sodium carbonate, sodium percarbonate, and citric acid. Preferably, the cleaning composition includes 160g of powdered sodium carbonate and 60g of powdered citric acid.

[0027] At least one sealing layer is preferably configured as a molten layer with a melting temperature of at most 250°C, particularly at most 200°C, particularly at most 150°C, particularly at most 100°C, and / or configured as a water-soluble layer. Particularly preferably, the multiple sealing layers each have a different melting temperature. For example, a first sealing layer may have a melting temperature of 65°C, and a second sealing layer may have a melting temperature of 95°C. Preferably, the sealing layers are plastic layers and / or wax layers. Therefore, the dispensing of the cleaning composition can be particularly easily controlled in a temperature-controlled manner and / or by liquid supply.

[0028] Preferably, multiple partial chambers are arranged in series in a chamber starting from the dispensing opening. The sealing layer preferably has a melting temperature that increases from the dispensing opening. Therefore, cleaning components can be continuously discharged from the cleaning unit in a temperature-controlled manner.

[0029] According to another aspect of the invention, the reverse receiving device has a reverse shape-fit locking element for form-fit connection with the cleaning insert. The reverse receiving device may have exactly one, especially at least one, especially at least two reverse shape-fit locking elements. The at least one reverse shape-fit locking element is preferably a snap-lock assembly and / or an embedded connection assembly and / or a latching connection assembly. The reverse receiving device can be configured to connect to a receiving device formed by at least one shelf. In particular, the receiving device may have an undercut for receiving at least one shelf. Therefore, the cleaning unit can be connected to the cleaning insert in a particularly reliable, especially loss-proof, manner.

[0030] According to another aspect of the invention, the reverse containment device is integrally connected to the chamber. For example, the reverse containment device may be material-bonded to the chamber. The reverse containment device and the chamber can be manufactured by injection molding, particularly in a single process step. The chamber and the reverse containment device preferably have the same material. Therefore, the cleaning unit can be manufactured particularly efficiently and economically.

[0031] Another object of the present invention is to provide an improved cleaning assembly for cooking appliances.

[0032] This objective is achieved by a cleaning assembly for a cooking appliance, having a cleaning insert and a cleaning unit as described above. The advantages of the cleaning assembly correspond to the advantages of the cleaning insert and cleaning unit described above. In particular, the cleaning assembly may further have the features described above regarding the cleaning insert and / or cleaning unit. The cleaning assembly can be configured for movably arrangement within the cooking space of the cooking appliance.

[0033] Preferably, the cleaning unit is reversibly attached to the receiving device of the cleaning plug via a reverse receiving device. The cleaning unit can be attached to and / or detached from the cleaning plug without tools.

[0034] According to one aspect of the invention, a cleaning unit attached to a cleaning insert penetrates a support. Preferably, the main extension direction of the cleaning unit attached to the cleaning insert is configured to be perpendicular to the main extension plane of the cleaning insert. A receiving device may have a receiving opening through which the cleaning unit penetrates the support. Preferably, the receiving device is configured by the boundary of the receiving opening. The cleaning insert can therefore be configured to be particularly compact.

[0035] According to another aspect of the invention, the cleaning unit is arranged on the cleaning insert such that the cleaning composition can be dispensed from the chamber by gravity through the dispensing opening. Therefore, the cleaning composition is preferably arranged in the cooking chamber. The dispensing opening is preferably located at the bottom of the cleaning unit. In particular, the dispensing opening opens downwards into the chamber. Therefore, the cleaning composition can fall out of the chamber solely by gravity. In particular, the chamber in its inserted position within the cooking chamber does not form any liquid reservoir for absorbing cleaning liquid. Therefore, the cleaning liquid entering the chamber can be completely drained again.

[0036] Another object of the present invention is to provide an improved method for cleaning the cooking chamber of a cooking apparatus, which is particularly easy to perform and efficient.

[0037] This objective is achieved by a method for cleaning the cooking chamber of a cooking appliance, the method comprising the steps of: providing a cleaning assembly as described above; connecting the cleaning unit to the cleaning insert by attaching the reverse receiving device to the receiving device; positioning the cleaning insert having the cleaning unit in the cooking space; dispensing the cleaning composition into the cooking space from the dispensing opening to clean the cooking chamber; and removing the cleaning insert having the chamber from the cooking space. The advantages of this method correspond to the advantages described above regarding the cleaning assembly, cleaning insert, and cleaning unit. The method may further incorporate the features described above regarding the cleaning assembly and / or cleaning insert and / or cleaning unit.

[0038] Preferably, water, especially in liquid and / or steam form, circulates through the cooking space. In particular, water circulation occurs via pipes located outside the cooking chamber, especially through a drain opening in the cooking chamber. The drain opening is preferably located at the bottom of the cooking chamber. Due to water circulation, the cleaning process is particularly gentle on the environment and resources.

[0039] Preferably, fresh water is circulated through the cooking space before the cleaning composition is dispensed. This pre-cleaning phase is preferably carried out over a period of 5 to 20 minutes, particularly within a period of 10 minutes. Dirty fresh water can be extracted. Preferably, fresh water is supplied to the cooking space multiple times and extracted again as dirty cleaning water. During this process, the cooking space can be heated to a temperature range of 30°C to 60°C, particularly to 50°C.

[0040] During the cleaning phase, the cleaning composition, particularly the first cleaning component, especially the first cleaning component comprising sodium carbonate, can be discharged from the chamber into the cooking space. Preferably, fresh water is supplied to the cooking space. The fresh water can be mixed with the first cleaning component. Preferably, a cleaning liquid is formed. Preferably, the cleaning liquid circulates multiple times through the cooking chamber. During this process, stubborn dirt is detached from the walls of the cooking chamber. Preferably, during this process, the cooking space is conditioned and / or heated to a cleaning temperature in the range of 30°C to 80°C, particularly 50°C to 70°C, particularly 65°C. The cleaning phase preferably has a duration in the range of 30 minutes to 120 minutes, particularly 40 minutes to 90 minutes, particularly 60 minutes.

[0041] According to one aspect of the invention, fresh water is circulated through the cooking space, particularly after the cleaning phase. This intermediate cleaning phase substantially corresponds to the pre-cleaning phase. Preferably, the temperature of the cooking space remains constant compared to the temperature of the cleaning phase. The temperature may also be lower than the temperature of the cleaning phase, particularly a continuously decreasing temperature. Preferably, the process of supplying fresh water, circulating the fresh water through the cooking space, and draining dirty water is performed at least two times, particularly at least three times.

[0042] Preferably, especially after the cleaning phase and / or after an intermediate cleaning phase, a second cleaning component, particularly one comprising citric acid, is dispensed into the cooking chamber. The cooking chamber is preferably heated to a temperature of at least 60°C, particularly at least 80°C, particularly at least 90°C, particularly 95°C. This temperature is preferably higher than the temperature during the cleaning phase. Water can be circulated through the cooking chamber. Preferably, a descaling solution is formed when the water mixes with the second cleaning component. Preferably, the descaling solution is circulated through the cooking chamber multiple times. Afterward, the descaling solution can be extracted. This descaling phase preferably lasts from 10 to 30 minutes, particularly 20 minutes.

[0043] Other cleaning ingredients can be released sequentially from the chamber into the cooking space.

[0044] The post-washing stage, preferably performed after the washing stage, and especially after the decalcification stage, essentially corresponds to the pre-washing stage and the intermediate washing stage. The temperature of the cooking space in the post-washing stage can correspond to the temperature of the cooking space in the decalcification stage. The temperature can also be lower, especially continuously reduced.

[0045] Cooking appliances may have controls for automatically performing the cleaning process.

[0046] According to another aspect of the invention, at least one sealing layer is opened by temperature to release the cleaning composition. The sealing layer may melt in this process. Alternatively, the binder, particularly the adhesive, between the sealing layer and the chamber may be melted. Preferably, the two sealing layers of the cleaning unit are opened in a temperature-induced manner to release two different cleaning components of the cleaning composition at different activation temperatures. Advantageously, this allows different cleaning components, especially those with different functions, particularly those with different pH values, to be released into the cooking space in an automatically controlled manner.

[0047] As an alternative to temperature-induced opening of at least one sealing layer, the sealing layer or chamber wall can be dissolved in water, particularly partially or completely, and thus have the effect of releasing the cleaning composition into the cooking space.

[0048] Preferably, the cleaning water and / or fresh water are discharged into the cooking space via a fan wheel, particularly a recirculating air wheel, used to circulate air within the cooking space. Preferably, the liquid is discharged onto the rotating fan wheel to distribute it evenly throughout the cooking space.

[0049] According to another aspect of the invention, the reverse receiving device of the cleaning unit can be arranged in the cooking space of the cooking apparatus by means of at least one, preferably at least two, fastening devices (e.g., hooks, eyelets, grooves). The reverse receiving device of the cleaning unit may also have its own corresponding fastening device or be designed as such.

[0050] According to one alternative, the cleaning unit can be positioned on a suitable fastener in the cooking space using appropriate fastening equipment.

[0051] Another object of the present invention is to provide an improved cleaning unit.

[0052] This objective is achieved by a cleaning unit having at least one soluble cleaning composition. The cleaning unit can be, in particular, completely soluble. A soluble configuration should be understood in particular as the cleaning unit being soluble in water or a cleaning liquid, subject to heating if necessary.

[0053] According to another aspect of the invention, the cleaning unit comprises one or more of an alkaline solution, an acid or its salt, and one or more of water. The proportion of the alkaline solution can be in the range of 30 ml to 70 ml, particularly in the range of 40 ml to 60 ml.

[0054] The proportion of acid can be in the range of 15ml to 55ml, especially in the range of 25ml to 45ml, and especially in the range of 30ml to 40ml.

[0055] The water ratio can be in the range of 0ml to 50ml, especially in the range of 5ml to 30ml, and especially at most 15ml.

[0056] According to another aspect of the invention, the cleaning unit is designed in the form of a lug. According to another aspect of the invention, the cleaning unit is formed into a spherical shape. The cleaning unit can particularly be designed as a pressed body. In particular, it can be flexibly pressed into different shapes. By shaping the cleaning unit, on the one hand, its arrangement in the cooking space, especially its arrangement on the housing or support, is affected, and on the other hand, the cleaning process, especially the sequence of different cleaning stages (where different components of the cleaning composition of the cleaning unit are dissolved), is affected.

[0057] According to another aspect of the invention, the cleaning unit is shaped as a sphere with an extension. The extension can be used to secure the cleaning unit to a support. In particular, it can be shaped for form-fitting connection with a form-fitting element. Other shapes are also possible.

[0058] According to another aspect of the invention, the cleaning unit is soluble and leaves no residue. In particular, the cleaning unit may be free of plastic and / or wax. This avoids unwanted residues in the cooking space or other areas of the cooking appliance. Furthermore, it prevents waste.

[0059] According to another aspect of the invention, the cleaning unit includes acid and alkaline solution components. In particular, it also includes corresponding salts.

[0060] According to another aspect of the invention, the cleaning unit includes a first wax layer. The first wax layer serves to protect the cleaning unit. In particular, it can seal the cleaning composition. This provides protection against accidental dissolution of the cleaning unit.

[0061] The first wax layer can also be used to separate the different components of the cleaning composition. In particular, it can be used to separate the internal area of ​​the cleaning unit from the external area of ​​the cleaning unit.

[0062] In particular, the first wax layer can be used to separate regions containing acid or its salts from regions containing alkali or its salts.

[0063] According to another perspective, the melting point of the first wax layer is in the range of 50°C to 90°C, especially in the range of 60°C to 70°C or in the range of 80°C to 90°C.

[0064] According to another aspect of the invention, the cleaning unit includes a first wax layer and a second wax layer. The first wax layer and the second wax layer are separate. In particular, the first wax layer may form an outer wax layer. The second wax layer may, in particular, form an inner wax layer for separating the different components of the cleaning composition.

[0065] According to another aspect of the invention, the second wax layer has a higher melting point than the first wax layer. In particular, the melting point of the first wax layer can differ from that of the second wax layer by at least 5°C, especially at least 10°C, especially at least 20°C. The first and second wax layers can also be made of the same material. In particular, they can have the same melting point. In particular, the melting point of the first wax layer can differ from that of the second wax layer by at most 10°C, especially at most 5°C. Because the melting points of the first and second wax layers differ, it can be achieved in a simple manner that, in the first part of the cleaning process, only the wax layer with the lower melting point, especially the outer wax layer, melts and thus releases the components of the cleaning composition, especially the alkali solution. The second component of the cleaning composition, especially the acidic component, surrounded by the second wax layer with the higher melting point, especially the inner wax layer, can first be surrounded by the second wax layer and thus protected from dissolution, and is dissolved only in the later stages of the process after the second wax layer has melted.

[0066] According to another aspect of the invention, the second wax layer of the cleaning unit is configured to be completely disposed within the area surrounded by the first wax layer. In particular, the second wax layer is spaced apart from the first wax layer. In particular, the second wax layer may be disposed equidistant from the first wax layer.

[0067] According to another aspect of the invention, the first wax layer and the second wax layer of the cleaning unit are arranged concentrically.

[0068] According to another aspect of the invention, the first wax layer of the cleaning unit comprises a certain proportion of alkali. According to another aspect of the invention, the second wax layer of the cleaning unit comprises a certain proportion of acid.

[0069] According to another aspect of the invention, the alkali may be disposed outside the second wax layer and inside the first wax layer.

[0070] As an alternative to a wax layer, other protective coverings may be provided around the components of the cleaning composition. Preferably, the protective coverings are designed such that they do not release the components of the cleaning composition they surround before a predetermined temperature (e.g., its melting point) and / or before a predetermined treatment duration.

[0071] Preferably, the covering surrounding the components of the cleaning composition is itself water-soluble and / or liquefiable. This facilitates residue-free cleaning of the cooking space. Alternatively, the cleaning unit can have different individual sub-units. In particular, a first sub-unit can be formed having an alkaline-based component of the cleaning composition. In particular, a second sub-unit can be formed having an acid-based component of the cleaning composition. By providing a covering that completely surrounds a portion of the cleaning composition surrounding one or all of the components of the cleaning unit, it is possible to release, in particular dissolve, only the corresponding portion of the cleaning composition after exceeding a certain temperature and / or after a predetermined exposure time. In this way, the cleaning process can be influenced, and particularly controlled, in a simple manner.

[0072] According to another aspect of the invention, the cleaning unit is formed with a reverse receiving device, such that the cleaning unit can be arranged on a carrier for food to be cooked, in particular, fixedly arranged on a carrier for food to be cooked.

[0073] The previously described aspects of the design of the cleaning units form independent aspects of the invention. They can be advantageous independently of other aspects of the invention, or they can be combined with other aspects of the invention.

[0074] Other advantages, features, and details of the invention will become apparent from the following description of exemplary embodiments based on the accompanying drawings. Attached Figure Description

[0075] Figure 1 A perspective view of a cooking apparatus for heating food in the form of a steam oven is shown, which has a cleaning assembly for reversibly inserting into the cooking space of the cooking apparatus.

[0076] Figure 2 Shown from an obliquely upward view Figure 1 A perspective view of a cleaning assembly, which includes cleaning inserts and cleaning units attached to the cleaning assembly.

[0077] Figure 3 Shown from a diagonal downward angle Figure 1 A perspective view of the cleaning assembly, which includes a cleaning plug and a cleaning unit, and

[0078] Figure 4 It shows Figure 1 A perspective view of a cleaning unit, wherein the cleaning unit is configured as a cleaning box having a chamber and a cleaning composition disposed therein. Detailed Implementation

[0079] based on Figures 1 to 4A cooking apparatus 1 for heating food to be cooked is described, having a cleaning assembly 2 movably arranged therein. The cooking apparatus 1 is configured as a steam cooking oven and includes a cooking chamber 3 for containing the food to be heated. The cooking chamber 3 defines a cooking space 4 and includes a cooking chamber opening 5 for loading and unloading the food to be cooked. The cooking chamber opening 5 can be reversibly closed by means of a cooking chamber door 6.

[0080] The cooking apparatus 1 includes a control device (not shown) for controlling the cooking process and a method for cleaning the cooking space 4. The control device is signal-connected to a user interface 7. The user interface 7 includes a touch-sensitive screen for inputting control commands and for visually outputting information, particularly information about the cooking and cleaning processes. The cooking chamber 3 includes two side walls 8, a bottom wall, a rear wall, and a top wall. On each side wall 8, three support rails 9 are arranged in pairs opposite to each other. The support rails 9 are configured to support and accommodate a carrier 10 for the food to be cooked.

[0081] The cleaning assembly 2, which is movably arranged in the cooking space 4, includes a cleaning plug 11 and a cleaning unit 12 attached thereto. The cleaning plug 11 includes a receiving device 13 for reversibly fixing the cleaning unit 12 and a support 14 connected to the receiving device 13 for positioning the receiving device 13 relative to the cooking space 4.

[0082] The support 14 includes a carrier 10 for food to be cooked. The carrier 10 for food to be cooked is configured as a baking rack. The cleaning insert 11, and in particular the support 14, has adjustable feet 15 for positioning the receiving device 13. The adjustable feet 15 are preferably configured to ensure that the receiving device 13 is positioned at a certain distance from the positioning surface. Therefore, when the cleaning insert 11 is placed on a storage area such as a kitchen countertop, the cleaning unit 12 can be connected to the cleaning insert 11 in a particularly simple manner.

[0083] The food carrier 10 has a track joint 16 for connecting a cleaning insert 11 to a support track 9. The food carrier 10 includes a plurality of support rods 17. The support rods 17 are configured as a circumferential frame 18. Several other support rods 17, at least in cross-section, are oriented parallel to each other and configured as positioning surfaces 19 for supporting the food to be cooked. The frame 18 is configured as the track joint 16.

[0084] The receiving device 13 is arranged in the central region of the cleaning insert 11, particularly in the central region of the carrier 10 for the food to be cooked. Specifically, in a top view, the minimum convex envelope of the receiving device 13 overlaps with the geometric center of the region of the cleaning insert 11, particularly with the geometric center of the region of the carrier 10 for the food to be cooked. Alternatively, the receiving device 13 may be arranged in an off-center position relative to the central region of the cleaning insert 11, particularly the central region of the carrier 10 for the food to be cooked.

[0085] The housing 13 is formed by two support rods 17. These support rods 17 are configured as form-fitting elements 21 for form-fittingly connecting the cleaning unit 12 to the support body 14.

[0086] The receiving device 13 includes a receiving opening 22. The receiving opening 22 penetrates the carrier 10 for food to be cooked in a direction perpendicular to the positioning surface 19. The receiving opening 22 is defined by a support rod 17 configured as a form-fitting element 21. In a top view, particularly in a top view perpendicular to the positioning surface 19, the receiving opening 22 is configured as a circle, to which two legs 23 are connected. The legs 23 are oriented in a direction parallel to each other. With respect to the circular portion 24 of the receiving opening 22, the two legs 23 extend radially and diametrically opposite to each other. For this purpose, the support rod 17 configured as a form-fitting element 21 includes a central, arcuate rod portion 25 and two straight rod portions 26 extending therefrom and parallel to each other. The support rod 17 configured as a form-fitting element 21 extends in the same plane, particularly in a plane parallel to the positioning surface 19.

[0087] The diameter of the circular portion 24 accommodating the opening 22 is preferably in the range of 20 mm to 100 mm, particularly in the range of 25 mm to 80 mm, particularly in the range of 30 mm to 60 mm, and particularly in the range of 40 mm to 50 mm. Preferably, the diameter D is 45 mm. The width B of the leg 23 is 18 mm. The width B is determined by the distance between the straight, parallel rod portions 26 between the two support rods 17 configured to accommodate the device 13.

[0088] The cleaning unit 12 is attached to the receiving device 13. The cleaning unit 12 includes a chamber 27 in which cleaning compositions 28 and 29 are arranged. The cleaning compositions include a first cleaning component 28 and a second cleaning component 29. The two components 28 and 29 of the cleaning composition are arranged in the chamber 27 and separated from each other by a second sealing layer 30. The chamber 27 has a dispensing opening 31 through which the cleaning compositions 28 and 29 can be dispensed into the cooking space 4. A first sealing layer 32 is arranged between the dispensing opening 31 and the cleaning compositions 28 and 29. The sealing layer 32 is preferably located at the level of the abutment clamp 37. The main extending plane of the sealing layer 32 is preferably arranged perpendicular to the axis of rotation 36 of the cleaning unit 12. By means of the first sealing layer 32, the cleaning compositions 28 and 29 are sealed in the chamber 27 in a way that prevents loss.

[0089] Chamber 27 is made of plastic, particularly polypropylene. The first component 28 includes sodium carbonate. The second component 29 includes citric acid. Both cleaning components 28 and 29 are present in the form of fine particles.

[0090] Sealing layers 30 and 32 comprise fusible materials. The first sealing layer 32 is composed of wax with a melting temperature of 60°C. The second sealing layer 30 is composed of wax with a melting temperature of 90°C.

[0091] The cleaning unit 12 includes a reverse receiving device 33 for reversibly securing the cleaning unit 12 to the cleaning insert 11. The reverse receiving device 33 has two reverse form-fit locking elements 34 for form-fitting connection to form-fitting elements 21 of the cleaning insert 11. The reverse form-fit locking elements 34 are configured as protrusions projecting radially from other cylindrical connecting portions 35 of the cleaning unit 12. An abutment collar 37 arranged on the cylindrical connecting portions 35 is configured to be rotationally symmetrical about the rotation axis 36 of the cleaning unit 12. A rotary engagement portion 38 is disposed between the reverse form-fit locking elements 34 and the abutment collar 37. The rotary engagement portion 38 is configured as an undercut that is rotationally symmetrical about the rotation axis 36 between the abutment collar 37 and the reverse form-fit locking elements 34.

[0092] The reverse receiving device 33, particularly the reverse form-fit locking element 34, is integratedly connected to the chamber 27, particularly by means of material bonding. The reverse receiving device 33 and the chamber 27 are manufactured during injection molding, particularly in a single process step. The width b of the reverse form-fit locking element 34 of the cleaning unit 12 is 16 mm, and is therefore smaller than the width B of the leg 23 of the cleaning insert 11, particularly smaller than the width B of the leg 23 of the receiving device 13.

[0093] exist Figure 2 and Figure 3In the image, the cleaning assembly 2 is shown in an open position. A receiving device 33 is arranged within a receiving opening 22. Specifically, a cylindrical connecting portion 35 penetrates the receiving opening 22.

[0094] The rotation axis 36 is vertically oriented. The cleaning unit 12 rests on the arcuate rod portion 25 of the support rod 17, which is configured as a form-fitting element 21, via an abutment clamp 37. A reverse form-fitting locking element 34 is arranged vertically below the form-fitting element 21. The cleaning unit 12 is arranged on the receiving device 13 so that it can rotate about the rotation axis 36. The cleaning unit 12 can pivot about the rotation axis 36 to move the cleaning assembly 2 into a locked position (not shown). In the locked position, the reverse form-fitting locking element 34 of the cleaning unit 12 is form-fitted to the rear of the form-fitting device 21 of the cleaning insert 11, and the dispensing opening 31 is arranged on the underside of the chamber 27.

[0095] The working principle of the cooking device 1 and the cleaning assembly 2 (with cleaning plug 11 and cleaning unit 12) is as follows:

[0096] The cooking apparatus 1 is used to heat food arranged in the cooking space 4. The user can control the cooking process via input through the user interface 7. In particular, a controller connected to the user interface 7 regulates the cooking temperature present throughout the cooking space 4. During cooking, the cooking chamber 3 and the support 10 for the food to be cooked gradually become contaminated with deposits, which are generated, for example, due to evaporation, splattering, or spillage of the food. For hygienic operation of the cooking apparatus 1, these deposits must be removed periodically. For this purpose, the following procedure for cleaning the cooking chamber 3 is performed:

[0097] A cleaning insert 11 and a cleaning unit 12 are provided. A first sealing layer 32 encloses the area in chamber 27 where the cleaning compositions 28 and 29 are arranged.

[0098] The cleaning unit 12 is attached to the cleaning insert 11. For this purpose, the cylindrical connecting portion 35 is inserted into the receiving opening 22. The abutment clamp 37 contacts the curved rod portion 25. The reverse-shape fitting locking element 34 points in the longitudinal extension direction of the straight rod portion 26. The cleaning assembly 2 is in the open position.

[0099] The cleaning unit 12 rotates 90° about the rotation axis 36. A reverse form-fit locking element 34 engages at the rear of the form-fit device 21, which is in the form of an arc-shaped rod portion 25. The cleaning unit 12 is fixed to the cleaning insert 11. In particular, the cleaning unit 12 is completely fixed in translation relative to the cleaning insert 11. The cleaning assembly 2 is in the locked position.

[0100] The cleaning assembly 2 is inserted into the cooking space 4. Specifically, the cleaning assembly 2 is attached to the support rails 9 of the cooking device 1 via two support rail joints 16. Preferably, the cleaning assembly 2 is secured to the support rail 9, which is centered in the vertical direction. This ensures that the cleaning unit 12 is substantially positioned at the center of the cooking space 4. Alternatively, the cleaning unit 12 may also be placed in a cleaning insert 11 already inserted into the cooking space 4.

[0101] The cooking chamber door 6 is closed. The user selects a cleaning program via the user interface 7. The cleaning program is executed by the control unit.

[0102] During the pre-cleaning stage, the cooking space 4 is heated to a pre-cleaning temperature T of 50°C. V Water is discharged into the cooking space 4 through an inlet (not shown). In particular, the water is distributed onto the fan wheel of a recirculating air fan. The fan wheel is driven to rotate by a fan motor (not shown), and the water distributed onto the fan wheel is thus particularly evenly distributed throughout the cooking space 4.

[0103] Thus, all contaminants are removed from the cooking chamber 3 and from the carrier 10 for the food to be cooked. Dirty water is collected on the bottom wall of the cooking chamber 3 and discharged from the cooking space 4 via drain opening 39. A fluid system (not shown) for handling and transporting liquids and gases is connected to drain opening 39. Cleaning water circulates multiple times through the cooking space 4 via pipes outside the cooking space 4 (the pipes are components of the fluid system). The contaminated cleaning water is then extracted, thus terminating the pre-cleaning phase.

[0104] During the cleaning phase, the cooking space 4 is heated to 65°C. The first sealing layer 32 melts. The first cleaning component 28 of the cleaning composition is thus released and falls out of the cleaning unit 12 through the dispensing opening 31 by gravity. Fresh water is discharged onto the rotating fan wheel of the recirculating air fan and diffuses into the cooking space 4. The first component 28 dissolves in the fresh water. The first component 28, together with the fresh water, forms a cleaning liquid. The cleaning liquid enters the drain opening 39 and then circulates through the cooking space 4 multiple times. In this way, even stubborn deposits are removed from the cooking chamber 3 and from the carrier 10 for the food to be cooked. The contaminated cleaning liquid is finally extracted.

[0105] In the subsequent intermediate cleaning phase, the cooking space 4 is rinsed with fresh water. As a result, any residues of the cleaning compositions 28 and 29 remaining in the cooking space 4, especially the cleaning solution, are completely rinsed away from the cooking apparatus 1, and especially from the cooking space 4. This reliably avoids any adverse effects on the subsequent cleaning phase, particularly due to residues that could negatively affect the pH value. In particular, it prevents alkaline cleaning solutions from weakening the descaling effect of the acidic descaling solution subsequently introduced into the cooking space 4. To this end, fresh water is distributed onto the rotating fan wheel and throughout the cooking space 4. The fresh water circulates multiple times through the cooking space 4 via the fan wheel, especially through the drain opening 39. The fresh water is then extracted. This process is repeated three times. The intermediate cleaning phase is then complete.

[0106] In the subsequent decalcification stage, cooking space 4 is heated to a decalcification temperature T of 95°C. E The second component 29 surrounding the cleaning composition and the second sealing layer 30 of the chamber 27 melt. The second component 29 falls out of the cleaning unit 12 by gravity through the dispensing opening 31. Fresh water is dispensed into the cooking space 4 via a rotating fan wheel. The fresh water mixes with the second component 29 to form a descaling solution. The descaling solution is guided to the drain opening 39 and circulates multiple times in the cooking space 4, especially through the drain opening 39 and via the rotating fan wheel. Lime deposits in the cooking chamber 3, on the carrier 10 for the food to be cooked, and in the fluid system downstream of the drain opening 39 are dissolved. Calcium liquid is extracted through the drain opening 39. The descaling stage is completed.

[0107] The cleaning process begins after the initial cleaning phase. This phase corresponds to the intermediate cleaning phase. As a result, residues of the cleaning compositions 28 and 29, especially residues of the descaling solution, are completely rinsed away from the cooking apparatus 1, particularly the cooking space 4. The cleaning process ends upon completion of the cleaning phase.

[0108] Remove the cleaning assembly 2 from the cooking space 4. Rotate the cleaning unit 12 90° relative to the rotation axis 36. Remove the form fit between the receiving device 13 and the reverse receiving device 33. The cleaning unit 12 can then be removed from the cleaning insert 11.

[0109] The cleaning plug 11 can be used as a regular baking rack for holding food to be cooked.

[0110] The design of the cleaning insert 11 (with a receiving device 13 for reversibly securing the cleaning unit 12) reliably ensures that the cleaning unit 12 can be positioned at a predetermined center or off-center location within the cooking space 4. This reliably ensures the distribution of the cleaning compositions 28, 29 necessary for successful cleaning within the cooking space 4. Specifically, it ensures that the cleaning compositions 28, 29 can be completely discharged from the cleaning unit 12, particularly from the chamber 27, and enter the cleaning process. By configuring the cleaning unit 12 with the chamber 27 and the reversible receiving device 33, the cleaning unit 12 can be reliably attached to the cleaning insert 11, preventing loss. Displacement of the cleaning unit 12 within the cooking space 4 during cleaning, especially due to the circulation of cooling air or liquid, can be avoided. The distribution of the cleaning compositions 28, 29 is performed in a particularly reliable manner, making the cleaning process robust and efficient.

Claims

1. A cleaning assembly (2) for a cooking appliance (1), comprising: 1.1 A cleaning insert (11) for removably arranging in the cooking space (4) of the cooking appliance (1), having 1.1.1 A receiving device (13) for reversibly fixing a cleaning unit (12) containing cleaning compositions (28, 29), and 1.1.2 A support (14) connected to the housing (13) for positioning the housing (13) relative to the cooking space (4), 1.1.3 Wherein, the support (14) includes a carrier (10) for the food to be cooked. 1.2 A cleaning unit (12) for the cleaning plug (11), which has 1.2.1 Cleaning compositions (28, 29), 1.2.2 A chamber (27) in which the cleaning composition (28, 29) is disposed, the chamber having a dispensing opening (31) for dispensing the cleaning composition (28, 29) into the cooking space (4) of the cooking device (1), and 1.2.3 A reverse receiving device (33) for reversibly fixing the cleaning unit (12) onto the cleaning insert (11), 1.3 Among them, The distance between the receiving device (13) and the outer contour of the support (14) is at least 50 mm. Its features are, 1.4 The receiving device (13) has a form-fitting element (21) for form-fitting connection with the cleaning unit (12), wherein the form-fitting connection forms a snap-lock and / or embedding connection and / or latching connection with the cleaning unit (12); and The reverse receiving device (33) has a reverse shape-fit locking element for shape-fit connection with the cleaning plug.

2. The cleaning assembly (2) according to claim 1, characterized in that, The containing device (13) is arranged in the central region of the carrier (10) for food to be cooked.

3. The cleaning assembly (2) according to claim 1 or 2, characterized in that, The support (10) for the food to be cooked is a baking rack.

4. The cleaning assembly (2) according to claim 3, characterized in that, The housing device (13) is configured from at least one support rod (17) of the baking rack.

5. The cleaning assembly (2) according to claim 1 or 2, characterized in that, The support (14) has a track joint (16) for connecting with the support track (9) of the cooking device (1).

6. The cleaning assembly (2) according to claim 1 or 2, characterized in that, The cleaning compositions (28, 29) comprise at least two cleaning ingredients.

7. The cleaning assembly (2) according to claim 1 or 2, characterized in that, The reverse receiving device (33) has a reverse shape-fit locking element (34) for shape-fit connection with the cleaning plug (11).

8. The cleaning assembly (2) according to claim 1 or 2, characterized in that, The reverse receiving device (33) is integrally connected to the chamber (27).

9. The cleaning assembly (2) according to claim 1 or 2, characterized in that, The cleaning unit (12) attached to the cleaning plug (11) passes through the support (14).

10. The cleaning assembly (2) according to claim 1 or 2, characterized in that, The cleaning unit (12) is arranged on the cleaning plug (11) in such a way that the cleaning composition (28, 29) can be dispensed from the chamber (27) by gravity through the dispensing opening (31).

11. A method for cleaning the cooking chamber (3) of a cooking appliance (1), comprising the following steps: 11.1 A cleaning assembly (2) according to any one of the preceding claims is provided outside the cooking space (4). 11.2 The cleaning unit (12) is connected to the cleaning plug (11) by attaching the reverse receiving device (33) to the receiving device (13). 11.3 Position the cleaning plug (11) having the cleaning unit (12) into the cooking space (4). 11.4 The cleaning composition (28, 29) is dispensed into the cooking space (4) through the dispensing opening (31) to clean the cooking chamber (3), and 11.5 Remove the cleaning insert (11) having the chamber (27) from the cooking space (4).

12. The method according to claim 11, characterized in that, Temperature-induced opening of the two sealing layers (30, 32) of the cleaning unit (12) releases two different cleaning components of the cleaning composition at different activation temperatures.

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