Apparatus for processing steam

Abstract

A device (40) for processing steam comprises a fluid-tight container having a steam inlet (41), a steam outlet (42) and a through-flow connection connecting the steam inlet (41) to the steam outlet (42), in particular along a flow direction, wherein the container can be at least partially filled with a cooling fluid.

Description

[0001] Cross-reference to related applications

[0002] This patent application claims priority to German patent applications DE 10 2020 212 820.0, DE 10 2020 212 821.9, DE 10 2020 212 822.7, DE 10 2020 212 823.5, DE 10 2020 212 824.3, DE 10 2020 212 825.1 and DE 10 2020 212 827.8, the contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to an apparatus for processing steam. It also relates to an apparatus for cleaning steam. Furthermore, it relates to a cooking appliance. Moreover, the invention relates to an apparatus for extracting cooking fumes and to a stove rack system including the corresponding apparatus. Finally, the invention relates to a method for processing steam, a method for operating a cooking appliance, and a method for operating an apparatus for extracting cooking fumes. Background Technology

[0004] This invention comprises numerous independent aspects and sub-aspects, each of which can provide advantages individually and / or in combination with other aspects / sub-aspects. Due to the large number of different permutation possibilities, each possible combination of features should be presented in isolation. This is not intended to be limiting. Even though different (sub)aspects are described in conjunction with each other, particularly with reference to common embodiments, they should be used independently to specify the claims.

[0005] Starting with DE 10 2019 205 337.8, apparatus for heating cooking products is known. The contents of DE 10 2019 205 337.8 and PCT / EP2020 / 060413 (reference: P200242WO) are incorporated herein by reference.

[0006] EP 2 254 422 B1 and DE 10 2008 012 961 A1 relate to a cooking appliance that includes a steam condensation device.

[0007] There is a need to improve this type of steam condensation device, especially the corresponding cooking appliances. Summary of the Invention

[0008] This objective is achieved through the subject matter of this invention.

[0009] This invention includes several different aspects, each of which individually or in combination with each other contributes to solving the objective and is the subject of this invention.

[0010] If elements of the subject matter of this invention are referred to in singular or plural form below, they should not be construed as limiting unless explicitly stated otherwise. In particular, advantageous embodiments described with reference to a single element may also be provided for multiple corresponding elements, and vice versa.

[0011] According to one aspect of the invention, an apparatus for processing steam includes a container that can be filled with cooling fluid in at least certain areas, and has a steam inlet, a steam outlet, and a flow connection connecting the steam inlet and the steam outlet.

[0012] According to one aspect of the invention, the apparatus includes at least one tool for mixing a cooling fluid in a container.

[0013] This tool is specifically designed for the active mixing of cooling fluids within a container. Specifically, it is used to mix the cooling fluids within the container, regardless of the extracted steam flow. The tool for mixing the cooling fluids can be arranged at least partially, and particularly completely, within the container. Specifically, it can be a structural component.

[0014] Steam, especially cooking steam. These are also known as cooking fumes or roasting fumes. They may contain water vapor, aerosols, and fats.

[0015] Steam can originate specifically from the receiving space of a cooking appliance, or be extracted specifically from that space. It can also be generated during the operation of the cooktop. It is typically generated during cooking and / or baking.

[0016] This device is particularly suitable for cooking appliances and / or for extracting cooking fumes.

[0017] Devices for handling steam are specifically designed to reduce the temperature and humidity of steam, particularly exhaust steam, and / or clean them.

[0018] In addition to problems with humidity and / or pollution, steam can also cause odor pollution. This invention can solve these problems, or at least reduce them.

[0019] This treatment specifically refers to the cooling of the steam stream and / or the reduction of the relative humidity of the air in the steam stream. The treatment may also include particle and / or grease separation. This corresponding treatment is sometimes also referred to as steam pretreatment. In particular, it can be used to prepare steam streams for further processing steps, especially for filtration in subsequent filter units. By subjecting the steam to appropriate treatment or preconditioning, it is possible to specifically achieve that the steam has a temperature and / or humidity, particularly the relative humidity, that falls within the range where subsequent filter units (especially activated carbon filters and / or other filters, such as electrostatic precipitators and / or plasma filters) operate particularly well.

[0020] By employing appropriate treatments, the filtration efficiency of downstream filters, especially odor filters and activated carbon filters, can be improved. Furthermore, the service life of these filters can be extended.

[0021] Containers may include pallets. In particular, pallets may be closed with lids. Except for the specified inlets and outlets, pallets may be closed in an airtight and / or hermetically sealed manner.

[0022] Specifically, this tray forms the base of the container. The base of the container is also called the lower shell. The lid of the container is also called the top shell.

[0023] The means of mixing cooling fluids in a container can be particularly used for vortex cooling fluids, so as to circulate the cooling fluid in the container or pump the cooling fluid into the container.

[0024] The method of mixing cooling fluids in a container can be used specifically for rinsing containers with cleaning solutions.

[0025] In particular, circulating pumps can be used as a means of mixing cooling fluids. These pumps can perform multiple functions. Specifically, they can switch between pumping and circulating modes by changing the rotation direction of the pump impeller or internal baffles.

[0026] In particular, cooling fluid in the form of cooling water can be flushed over the bottom surface of the container and / or heat exchange plates, as described below, by a circulating pump in the loop.

[0027] Preferably, the edges of the container are designed to be rounded, particularly to avoid creating dead zones within the container. In particular, the base of the container can be designed without dead zones.

[0028] In particular, fresh water is used as the cooling fluid. The cooling water can specifically have a temperature within the room temperature range. Specifically, it can have a temperature in the range of 5°C to 35°C. Preferably, it has a temperature of at most 20°C.

[0029] The device may also have means for removing cooling fluid from the container. For this purpose, the container may specifically have a cooling fluid outlet. The cooling fluid outlet is preferably located in the region at the lowest point of the container. The cooling fluid outlet can be opened and closed. In particular, it can be opened and closed in a controlled manner.

[0030] The device may specifically include a second pump for pumping liquid out of the container. The second pump may specifically pump the liquid out through an outlet at the lowest point of the container.

[0031] Pumps (particularly circulation pumps and / or wastewater pumps) can be attached to the lid or chassis of the container. Specifically, the pump can be secured to the lid of the container. The pump can be spaced apart from the chassis of the container or mounted on the bottom of the tray.

[0032] Preferably, each pump has an inlet arranged as close as possible to the bottom of the container. The distance between the pump inlet and the bottom of the container is preferably at most 1 cm, particularly at most 5 mm, particularly at most 2 mm, and particularly at most 1 mm.

[0033] The device may have a designated inlet for the cooling fluid. This may be arranged spaced apart from the steam inlet. The cooling fluid inlet is preferably arranged closer to the steam outlet than to the steam inlet. This allows for improved cooling effect of the cooling fluid, and in particular, better utilization of the cooling fluid. The cooling fluid inlet may also be close to the steam inlet, particularly at a distance of up to 10 cm, and more particularly at a distance of up to 5 cm.

[0034] By positioning the inlet of the cooling fluid into the container, the flow path of the cooling fluid through the container can be specified.

[0035] The inlet of the cooling fluid can be specifically positioned at a certain distance from the outlet of the cooling fluid.

[0036] The inlet of the cooling fluid can be specifically arranged such that when the cooling fluid flows through the container, it causes a flow pattern, particularly in the chassis, and especially causes mixing of the cooling fluid in the container.

[0037] The inlet of the cooling fluid can be specifically arranged such that the cooling fluid first flows over a cooling plate arranged in the container, and then from there reaches the chassis via one or more defined outlets. Specifically, it enters the chassis in a region spaced apart from the cooling fluid outlet. Specifically, it can enter the chassis in a region as far away from the cooling fluid outlet as possible. For example, it can enter the chassis in a region diagonally opposite to the cooling fluid outlet. From there, it flows through the chassis to the cooling fluid outlet.

[0038] By properly arranging the cooling fluid inlets and / or outlets in the cooling plates, it is possible to completely exchange the cooling fluid in the container only by adding fresh cooling fluid and removing existing cooling fluid. In this case, the means for mixing the cooling fluid can be eliminated.

[0039] According to one aspect of the invention, the tool for mixing the cooling fluid is configured to generate a countercurrent in the steam flow in the cooling fluid in the region between the steam inlet and the steam outlet. Specifically, a circulating pump can be used to generate a current in the cooling fluid that has a component in the region adjacent to the steam outlet of the vessel that is opposite to the component of the steam flow in the region upstream and adjacent to the steam outlet, particularly in the direction from the steam inlet to the steam outlet. If the scalar product is negative, there is an opposite component or a partially opposite direction here. The direction of the velocity vector, particularly the temporal and / or spatial average velocity, is considered the flow direction.

[0040] By employing tools for mixing the cooling fluid, it can be ensured that the cooling fluid in the container absorbs heat energy not merely through contact with the vapor flow at its surface. Specifically, it is possible to achieve a substantially uniform temperature for the cooling fluid within the container. In particular, the temperature of the cooling fluid can be substantially the same throughout the entire container. Alternatively, multiple distinct zones can be formed within the container, where the temperature of the cooling fluid is substantially the same, with different temperatures in different zones. This will be described in detail below.

[0041] The steam inlet, particularly within its lid, can be arranged centrally within the container, especially at the center of the container's central plane. According to one embodiment, the steam inlet can be arranged opposite to the steam outlet relative to the central region of the container. Specifically, the steam inlet and steam outlet can be arranged in the edge regions of the container opposite each other relative to the central region. In particular, they can be arranged in a manner that maximizes their distance. This results in a particularly large flow path for the steam within the container. For the guiding members that influence the steam flow within the container, the distance is measured here, particularly along the intended flow path of the steam. For example, the steam inlet can be arranged adjacent to the steam outlet, but the flow path within the container is influenced by the guiding members such that the steam flows substantially entirely through the container from the steam inlet to the steam outlet, for example, along its circumference.

[0042] According to one aspect of the invention, an apparatus for processing steam includes at least one sensor for detecting at least one parameter of the steam flow and / or the coolant in the container.

[0043] With the aid of such a sensor, the effectiveness of treatment can be detected, and in particular controlled, and especially regulated. The sensor can be specifically signal-connected to a control device for controlling the mixing (especially circulation) of coolant in the container, and / or adding coolant (especially fresh water) to the container, and / or discharging coolant and / or wastewater from the container, and / or drawing steam away by means of an exhaust fan device, which can also be specifically designed as a separate component from the treatment device.

[0044] Instead of a single sensor, multiple sensors can also be provided.

[0045] At least one sensor may be designed as a mechanical sensor and / or an electrical sensor and / or a chemical sensor and / or an optical sensor. In particular, it may be a temperature sensor and / or a humidity sensor and / or a conductivity sensor and / or a volumetric flow sensor.

[0046] At least one sensor is preferably located downstream of the steam outlet. In particular, it can be located in a riser pipe adjacent to the steam outlet.

[0047] At least one sensor may also be arranged upstream of the steam outlet, particularly in the container, or upstream of the steam inlet, particularly in the area of ​​the connecting piece between the receiving space and the steam inlet, or in the receiving space of the cooking appliance.

[0048] The parameters of a steam flow can be, in particular, its temperature, relative humidity, degree of contamination, or volumetric flow rate.

[0049] The parameters of the cooling fluid in the container can be, in particular, its temperature, its fill level, or its degree of contamination.

[0050] The coolant can be a cooling fluid in a container or another coolant, especially a cooling component, particularly in the form of a solid body, such as a cooling plate described in more detail below.

[0051] According to one aspect of the invention, the device is configured such that steam can undergo multi-stage cooling as it passes through the flow connection.

[0052] Steam can undergo pre-cooling and post-cooling as it passes through the flow path connection. This can be achieved by having the steam pass through areas with different temperatures, particularly areas with different surface temperatures, as it passes through the flow path connection.

[0053] Specifically, tools can be provided to achieve a lower temperature, particularly a lower surface temperature, in the cooling fluid compared to the region adjacent to the steam outlet, in the region adjacent to the steam inlet.

[0054] Specifically, the container may have multiple sub-regions for receiving cooling fluid. These sub-regions may be specifically designed to reduce, and in particular prevent, mixing of cooling fluids from different regions. For example, these sub-regions may be partially or completely separated from each other by partition walls.

[0055] According to one aspect of the invention, the flow connection has a tortuous structure. For this purpose, an intermediate or partition wall can be provided in the container to guide the steam flow. The tortuous structure, particularly the partition wall, can extend over the entire height of the container. However, it can advantageously form a partition wall in such a way that the partition wall ends at a certain distance from the bottom of the container. In particular, the partition wall can be designed to be formed only in the upper part of the container, rather than in the lower part. In this case, the partition wall is preferably immersed in the cooling fluid in the container during device operation. They extend vertically, particularly in an area located below the intended filling height, for example, 1 cm, 2 cm, or 3 cm. Thus, it is possible to achieve a steam flow that must follow the tortuous structure, while simultaneously allowing the cooling fluid below the tortuous structure to circulate freely within the container, particularly in the container's chassis or in a sub-region designed for this purpose.

[0056] In particular, the tortuous structure provides a means for extending the flow path of the steam flow in the container. According to one aspect of the invention, the flow path of the steam flow in the container is larger than the maximum diameter of the container. In particular, the length of the flow path can be at least 1.5 times, especially at least 2 times, and especially at least 3 times the maximum diameter of the container.

[0057] The length of the flow path in the container can be at least 30 cm, especially at least 40 cm, especially at least 50 cm, especially at least 60 cm, especially at least 80 cm, especially at least 100 cm.

[0058] According to one aspect of the invention, an apparatus for treating steam includes at least one tool for adding cooling fluid to a container and at least one cooling member in the form of a solid body, particularly in the form of a cooling plate.

[0059] The cooling fluid and cooling components in the container constitute the components of the cooling device.

[0060] The cooling device can also be used as a condensing device. In particular, the cooling component can be used as a condensing component, and the steam can be condensed at least partially on the condensing component.

[0061] The cooling components are specifically arranged within the container, and specifically, are not formed by the container's boundary walls. In particular, they are arranged at a certain distance from the bottom and lid of the container.

[0062] In principle, the lid of the container itself can also be designed as a cooling component and / or form a corresponding cooling component. In this case, the lid can advantageously be cooled from the outside. In particular, it can be cooled by liquid and / or air on its exterior.

[0063] During operation of the processing device, the cooling fluid becomes part of the cooling device. In particular, a cooling element forms on the surface of the cooling fluid in the container. In other words, the cooling device may have a liquid cooling element.

[0064] Specifically, the cooling device is designed such that during operation, steam flows between a layer of cooling fluid and cooling components in the container to pre-condition the steam.

[0065] The cooling device is specifically designed so that during operation, steam flows between two layers of cooling fluid, particularly between two liquid layers, for pre-conditioning of the steam. In this case, the lower layer is formed by the cooling fluid in the vessel's base. The second liquid layer is formed by the cooling fluid, particularly cooling water, on a solid body cooling member.

[0066] According to one aspect of the invention, at least one solid cooling member comprises one, two, or more metal plates. These metal plates are arranged, in particular, parallel to each other. Specifically, they are arranged substantially parallel to the lid of the container. In particular, they may have a maximum inclination relative to the lid of the container of up to 10°, particularly up to 5°, particularly up to 3°, particularly up to 1°.

[0067] This metal plate is also known as a cooling plate.

[0068] According to one aspect of the invention, at least one plate is aligned obliquely relative to the horizontal direction in at least certain areas. The angle of inclination relative to the horizontal direction can be at least 1°, particularly at least 3°. It can be at most 10°, particularly at most 5°. By tilting the plate to the horizontal, a specified drainage direction for the cooling fluid on the plate is achieved.

[0069] Metal sheets can have surface textures, particularly rolled and / or embossed textures. They can also have polished surfaces. This can improve the condensation on the surface of the metal sheet.

[0070] The metal plate may have a crown. This allows for the specification of a predetermined compensation direction for potential thermal expansion of the metal plate. Therefore, mechanical stress on the metal plate within the container can be avoided. Specifically, the top of the metal plate is designed to bulge vertically, particularly downwards, in the event of thermal expansion.

[0071] The plate can be equipped with heat sinks. This increases the surface area, which improves cooling performance.

[0072] The shape of at least one metal plate can be particularly adapted to the shape of the container, especially the cross-section of the container, particularly its chassis or its top shell.

[0073] In particular, each of the at least one metal plate may have an outer periphery that substantially corresponds to the inner cross-section of the container's tray.

[0074] The plate can be arranged in a sealed manner within the container, particularly on its circumference, especially on its upper shell. One or more defined channels can be provided here, particularly in the form of overflow openings. The plate can also have one or more deeply embossed areas. These embossed areas ensure a certain level of cooking medium on the plate.

[0075] At least one metal plate is specifically arranged at a distance from the lid of the container and at a distance from the bottom of the container. In particular, it is arranged such that a space is left between it and the lid of the container for cooling fluid.

[0076] Preferably, there is a space between the plate and the bottom of the container for cooling fluid.

[0077] In principle, one or more tubular cooling components can also be arranged within the container. Cooling fluids can pass through these tubular cooling components. Specifically, they can be cooled in a controlled manner by means of a coolant. In particular, they can be external components, especially closed cooling circuits. This is advantageous if contact between steam and cooling fluid is to be avoided.

[0078] According to one aspect of the invention, at least one cooling component, particularly at least one metal plate, can be cooled by contact with a cooling fluid.

[0079] This can be the same as the cooling fluid in the container. In particular, fresh water can be used as the cooling fluid. Generally, the cooling fluid is preferably a liquid, i.e., a cooling fluid.

[0080] At least one of the aforementioned metal plates can be cooled specifically by applying cooling water. This is also known as active cooling.

[0081] One or more metering components may be provided for introducing cooling water, particularly in the form of fresh water, into the container, and especially for applying cooling water to the cooling components.

[0082] Adding cooling fluid to at least one cooling component can be performed in a controlled manner, particularly in a timed manner. Specifically, it can be controlled based on signals from one or more sensors. In particular, it can also be specified according to the selected operating mode of the cooking appliance. Therefore, devices for handling steam can, in particular, have different operating modes.

[0083] Cooling components, particularly at least one metal plate, can serve as parts of a heat exchanger. This heat exchanger allows heat to be transferred from a steam flow to a cooling fluid flow, particularly a cooling water flow.

[0084] Generally, heat exchangers can be arranged in a vessel of a device for processing steam in order to cool the steam. The heat exchanger may specifically be formed of or contain cooling elements through which cooling water flows.

[0085] In principle, particularly as described above, two or more heat exchangers can also be arranged in the vessel of the device used for steam processing. They can be arranged parallel to each other or sequentially relative to the steam flow. Using multiple heat exchangers allows for more flexible control of the cooling capacity used for steam processing. Individual heat exchangers can be turned on or off as needed. This enables a particularly economical operating mode.

[0086] According to one aspect of the invention, at least one metal plate each includes one or more defined outlets for discharging cooling fluid into a container, particularly the base of the container.

[0087] In particular, the drain can be designed to form a curtain of cooling fluid.

[0088] It can also provide numerous defined drains, especially orifice openings. This can produce a shower effect. This results in particularly favorable cooling of the steam flow.

[0089] The discharge port can specifically have a range of 0.01mm. 2 Up to 1000mm 2 The cross-sectional area of ​​the exhaust port in the cooling component is, in particular, at least 0.04 mm. 2 Especially at least 0.1mm 2 Especially at least 0.4mm 2 Especially at least 1mm 2 The cross-sectional area of ​​the exhaust port in the cooling component can be up to 25 mm². 2 Especially the maximum 16mm 2 Especially the largest 9mm 2 .

[0090] The number of exhaust ports in at least one cooling plate can range from 1 to 1000. In particular, the number is at most 1000, and especially at most 20.

[0091] At least one outlet of at least one metal plate may be specifically arranged such that the outflowing cooling fluid flows into the chassis of the vessel within a predetermined area. This area may be specifically adjacent to the steam outlet of the vessel. In particular, it is closer to the steam outlet than to the steam inlet. The outlet of at least one metal plate may also be specifically arranged diagonally opposite to the cooling fluid outlet in the vessel.

[0092] The discharge outlet can be specially designed to form an overflow opening.

[0093] According to one aspect, at least one metal plate each includes an overflow edge.

[0094] This allows the metal plate to be completely wetted by the cooling fluid, especially cooling water. In particular, the metal plate can be completely covered by cooling water. Generally, cooling water can flow over it.

[0095] Generally, the plate may have one or more defined overflow edges. The defined overflow edges ensure that the minimum water level is always maintained at the top of the metal plate. Due to the water on the metal plate, the metal plate is cooled down. Specifically, it functions as a condensing element, where moisture from steam can condense.

[0096] In particular, the metal plates can each form a carrier for a layer of cooling water, especially a carrier for a closed cooling water layer.

[0097] According to one aspect of the invention, the device includes at least one inlet for feeding cooling fluid into a container, wherein the cooling fluid can be fed into the container in such a way that a flow connection extends at least regionally between two liquid layers.

[0098] In this context, as mentioned above, the upper liquid layer can be supported by a carrier, particularly a carrier in the form of a cooling plate.

[0099] The device specifically features a carrier arranged within a container for a layer containing cooling fluid. The device is therefore designed such that, after the cooling fluid is properly fed into the container between the two liquid layers, the flow connection extends at least in certain areas, particularly beyond at least 50%, at least 60%, at least 70%, at least 80%, and at least 90% of the bottom region of the container.

[0100] The metal plate can be secured inside the container during assembly. In particular, it can be clamped between the top and bottom shells of the container.

[0101] Cooling components can also be air-cooled or designed to be cooled by air.

[0102] Cooling components can also be part of a closed cooling circuit.

[0103] According to another aspect of the invention, the container includes multiple flow sub-regions for cooling fluid.

[0104] This can improve the cooling effect.

[0105] Different flow sub-regions can be at least partially separated from each other using flow guiding tools, particularly isolation walls. The different sub-regions are specifically designed such that the mixing of the cooling fluid within a sub-region is greater than the mixing between two different sub-regions.

[0106] According to one aspect of the invention, the container has at least one inlet for cooling fluid, which is arranged such that the cooling fluid can be fed into the container in the region of the flow connection, which is closer to the steam outlet than to the steam inlet. This can also achieve or improve post-cooling of the steam flow.

[0107] The container may also have multiple inlets for the cooling fluid. This allows the cooling fluid to be fed into the container at different points.

[0108] According to one aspect of the invention, the container has a tap water connection. This allows fresh water to be added as a cooling fluid.

[0109] Fresh water can be used particularly for cooling components, especially cooling plates. Specifically, it can flow through the cooling plates and drain from there into the bottom tray of the container.

[0110] Fresh water can also be fed directly to the chassis as a cooling fluid, particularly to one or more of the sub-regions described above.

[0111] Another cooling option can be provided by internal cooling hoses or tubes. At both ends, they are combined into a supply line and a drain line. Inside the container, to increase the surface area, they are formed into small-diameter tubes or hoses, particularly with a diameter of up to 2 cm, particularly with a diameter of up to 1 cm, particularly with a diameter of up to 5 mm, particularly with a diameter of up to 3 mm, particularly with a diameter of up to 2 mm, particularly with a diameter of up to 1 mm.

[0112] According to one aspect of the invention, the cooling fluid, particularly the cooling water, can be introduced into the container at one or more points by means of an atomizer, especially by means of an atomizing nozzle. This can further improve the cooling effect.

[0113] Atomizing devices can be provided, especially for feeding fresh water. In this case, there is at most a slight risk that the atomizing device, particularly the atomizing nozzle, may become clogged with contaminants.

[0114] According to one aspect of the invention, the device includes a control device by means of which the mixing of cooling fluid in the container and / or the addition of cooling fluid to the container can be controlled, in particular regulated.

[0115] In particular, the mixing of cooling fluid in the container and / or the addition of cooling fluid to the container can be controlled based on the temperature of the steam flow, especially in the region downstream of the steam outlet, the relative humidity of the steam flow, especially in the region downstream of the steam outlet, the temperature difference of the steam flow in the regions of the steam inlet and steam outlet, the suction of the external fan, especially the volumetric flow rate of the steam, or a combination of two or more of these parameters.

[0116] Proper control can improve the economic efficiency of the equipment. In particular, it can reduce the consumption of cooling fluids, especially cooling water.

[0117] According to one aspect of the invention, the flow connection has a flow cross-sectional area that increases in the flow direction. The flow cross-sectional area can increase particularly linearly, especially strictly linearly. It can increase steadily or abruptly. In particular, the flow cross-sectional area of ​​the steam outlet can be specified to be larger than that of the steam inlet. The flow cross-sectional area of ​​the steam outlet can be particularly larger than that of the steam inlet by at least 1%, particularly at least 5%, particularly at least 10%, particularly at least 30%, particularly at least 50%.

[0118] The minimum flow cross-sectional area in the container can be at least 1 cm². 2 Especially at least 3cm 2 Especially at least 8cm 2 This specification can be applied to empty containers. In particular, it applies to the free-flow cross-sectional area of ​​the vapor flow when the container is filled with cooling fluid to a predetermined filling height.

[0119] Specifically, the cross-sectional area of ​​the container is at least 100 cm². 2 Especially at least 200cm 2 Especially at least 400cm 2 Especially at least 800cm 2 .

[0120] The corresponding values ​​apply to the free surface of the cooling fluid in the container when the cooling fluid is filled to a predetermined filling height.

[0121] The water surface area that can be placed in the cooling plate is at least 100 cm². 2 Especially at least 200cm 2 Especially at least 400cm 2 Especially at least 800cm 2 Especially at least 1200cm 2 Especially at least 1350cm 2 Especially at least 1600cm 2 Its size is at most the same as the cross-sectional area of ​​the container.

[0122] According to one aspect of the invention, an actuator is arranged downstream of the outlet of the circulating pump, by means of which switching between different circulation loops is possible.

[0123] This allows the use of a circulation pump to mix cooling fluids and / or rinse the container with cleaning fluid in the container on the one hand, and to pump liquid from the container into the cooking space of the appliance on the other hand.

[0124] The corresponding switchability of different circulation loops is particularly advantageous in terms of cleaning the receiving space and / or the containers used for steam treatment.

[0125] Specifically, it can be stipulated that, for cleaning and / or sterilizing the container used to handle steam, a cleaning agent or another reactant is introduced into the container via a fluid outlet in the receiving space, particularly into the chassis. The corresponding reagent can then be selectively circulated entirely within the container or in a loop including the container and the cooking space.

[0126] The corresponding cyclic patterns can be provided sequentially according to a pre-determined scheme.

[0127] A three-position two-way valve, i.e., a valve with a total of three connections (two of which are different outlets), can be used as an actuator to switch different circulation loops. A four-position three-way valve can also be used as an actuator. In particular, this actuator has two different outlet connections.

[0128] The actuator can be controlled specifically by means of a control device.

[0129] The container can also have a separate inlet for adding cleaning agents. This is highly advantageous if you are using a cleaning agent that must not enter the cooking space of the appliance to treat the container.

[0130] When cleaning the cooking space, the container of the steam handling device can be used as a storage container for the cleaning agent, which is specifically circulated between the container and the cooking space during the cleaning process.

[0131] When cleaning the cooking space, you can also clean the containers used to handle steam at the same time.

[0132] The cleaning process can be monitored using the aforementioned sensors. Specifically, it can be specified that the cooking space be rinsed with fresh water for a predetermined period during the cleaning process. Then, one or more parameters of the rinsing water discharged from the cooking space through the fluid outlet can be detected using one or more sensors.

[0133] This allows the cleaning process to end once a certain level of purity is reached. This can save on cleaning chemicals and / or reduce water consumption.

[0134] Another objective of this invention is to improve a device for cleaning steam.

[0135] This objective is achieved by having equipment with the aforementioned means for processing steam.

[0136] According to one aspect of the invention, the device includes a fan for applying negative pressure to the container. In particular, the fan is arranged downstream of the steam outlet in the direction of steam processing.

[0137] With the help of a fan, steam can be absorbed through a steam processing device. This has proven to be particularly effective at removing steam from the receiving space of cooking products.

[0138] According to one aspect of the invention, the device includes at least one filter device arranged downstream of the steam outlet of the device for treating steam and connected thereto by means of fluid conduction.

[0139] The filter device may specifically have one or more odor filters, particularly one or more activated carbon filters.

[0140] The combination of the aforementioned steam treatment apparatus and the filter device arranged downstream of the apparatus enables particularly advantageous purification of the steam. In particular, it can reduce moisture content, fat content, and other impurities, especially odors.

[0141] Furthermore, the steam can be pretreated using a steam treatment device, enabling the filter unit to operate in a particularly advantageous manner, especially in the optimal operating mode. With the help of the steam treatment device, it is possible to specifically ensure that the steam in the area of ​​the filter unit falls within a predetermined range of temperature and / or relative humidity.

[0142] Devices used for steam processing can particularly extend the lifespan of filters.

[0143] According to one aspect of the invention, the apparatus for purifying steam includes means for processing steam as described above, a fan for applying negative pressure to a container, and at least one filter device, wherein the fan is arranged downstream of the steam outlet, and wherein the filter device is arranged downstream of the steam outlet of the apparatus.

[0144] Specifically, the filter device is connected to the steam handling unit and the fan via fluid conduction. The filter device can be specifically arranged in the flow path between the steam handling unit and the fan.

[0145] According to one aspect of the invention, the filter device is arranged above the steam handling apparatus. Specifically, it is arranged above the steam handling apparatus, particularly above the chassis of the steam handling apparatus, by at least 10 cm, particularly at least 20 cm, and particularly at least 30 cm. This reliably prevents liquid, particularly cooling fluid, from entering the filter device from the steam handling apparatus.

[0146] In addition, one or more risers can be installed for fluid conduction connections to the steam outlet of a device with a filter for handling steam.

[0147] The fan can be connected to a control unit with a sensor device via signal transmission. The sensor device may have one or more sensors. Please refer to the preceding description for details.

[0148] The control device for controlling the fan used to extract steam from the receiving space can also be connected to or integrated into the control device of the cooking appliance via signal transmission. This allows steam extraction to be controlled according to the operating mode of the cooking appliance. For details, please refer to PCT / EP2020 / 060413.

[0149] Another objective of this invention is to improve cooking utensils used for cooking food.

[0150] This objective is achieved by a cooking appliance that includes a device for processing steam, as described above.

[0151] For example, a cooking appliance is an oven, especially a steam oven or steam cooker. It can also be a microwave oven or a combination appliance that includes the functions of an oven, steam cooker, and microwave. Generally speaking, a cooking appliance is a type of kitchen appliance.

[0152] This objective is also achieved through a cooking appliance that includes a venting device for extracting steam from a receiving space and a device for processing the steam extracted from the receiving space, the steam processing device being arranged in the negative pressure zone of the venting device.

[0153] On the one hand, these advantages stem from the superior design of the steam handling device; on the other hand, the arrangement of this device within the negative pressure zone of the ventilation system enables controlled extraction and passage of steam through the handling unit. In particular, this can be accomplished in a more controlled manner compared to steam escaping from the cooking space due to overpressure generated there.

[0154] The reversible and detachable connector can be configured to provide a fluid conduction connection between the fluid outlet of the receiving space and the steam inlet of the device for processing steam.

[0155] According to one aspect, the connector can be fixed in a sealing manner, particularly by locking, within the receiving space of the cooking appliance. In this case, a sealing member, particularly in the form of a sealing ring, can be provided in the area of ​​the supporting edge. When the connector is locked with the member provided for this purpose in the receiving space, the sealing ring can be compressed.

[0156] Connecting the receiving space to the steam handling device via a separate connector allows for relative clearance between the two.

[0157] The apparatus for handling steam can be specifically mounted such that it floats relative to the receiving space. Specifically, it can be arranged such that it can move relative to the receiving space. Specifically, it has at least one degree of freedom. Specifically, it can have one degree of freedom in the vertical direction and one or two degrees of freedom in the horizontal direction.

[0158] The connector can be inserted through the steam inlet into the container of the steam handling device. In particular, it can be immersed in the container in an axially movable manner through the steam inlet.

[0159] The connector can be secured to prevent accidental slippage out of the steam inlet.

[0160] In particular, it can prevent accidental slippage from the container by a sufficiently large immersion depth. The container, especially its socket for the connector, and the connector can overlap at least 1 cm, especially at least 2 cm, and especially at least 3 cm in the axial direction of the connector.

[0161] When the connector is immersed in the container, a seal can be provided at the steam inlet to seal the connector.

[0162] The bayonet lock can be configured to lock the connector into the receiving space. Other types of connections are also possible. For example, the connector can also be screwed into the cooking space.

[0163] The connector may have a screen. This screen is used to retain food residue in the cooking space.

[0164] The connector may have a connecting pipe, particularly a circular pipe. This pipe has an outer diameter that is compatible with the inner diameter of the steam inlet.

[0165] With the help of this connector, the cooking space and the steam handling device are aligned with each other.

[0166] The connector achieves an outward liquid seal, particularly a steam seal, between the receiving space and the container of the steam handling device. This prevents liquid or steam from escaping from the receiving space into unwanted areas of the cooking appliance and prevents damage there.

[0167] The connector is preferably fixed in the receiving space without tools, and / or can be released from the fixed position without tools. Alternatively, special tools may be provided to fix and / or release the connector.

[0168] With the aid of the connector, the expansion of the receiving space due to temperature fluctuations can be reversibly compensated. In particular, the connector achieves an outwardly sealed connection between the receiving space and the vessel for handling steam, regardless of whether the receiving space may expand.

[0169] The connector can form a tool for thermal decoupling between the receiving space and the steam handling device. It can be made, in particular, of a material with a low thermal conductivity value, or have at least one circumferential region made of such a material. The connector can be made, in particular, of plastic, especially of heat-resistant plastic, or have at least one region made of such plastic. Heat resistance means that the material can withstand temperatures of at least 100°C, particularly at least 200°C, and especially at least 300°C.

[0170] The connector may also be made of the same material as the boundary walls of the receiving space of the cooking appliance, at least in certain areas. In particular, it may be made of a material with a coefficient of thermal expansion similar to, and especially the same as, the material of the boundary walls of the receiving space. This ensures that it is in close contact with the fluid outlet of the receiving space, even when the receiving space expands.

[0171] The connector can also be made partly or entirely of a flexible material, particularly an elastic material. In this case, it can also be advantageously connected in a flexible manner to the vessel used for handling steam. In particular, it can be tubular or have tubular regions.

[0172] The connector can be positively connected to the receiving space.

[0173] The connector can be positively connected to the vessel of the steam handling device.

[0174] As mentioned earlier, a fan can be arranged downstream of the steam processing device to extract steam from the receiving space. Therefore, the steam processing device can withstand negative pressure.

[0175] Due to the overpressure in the cooking space, and especially due to steam expansion, the steam generated in the cooking space can also be forced into a container for steam treatment. The steam treatment device can also operate, in particular, without a fan device for generating negative pressure.

[0176] As described above, in particular, a filter device with at least one odor filter can be arranged downstream of the device for treating steam. For further details, please refer to the preceding description.

[0177] Generally, improvements to cooking appliances that include a steam handling device are made by arranging the steam handling device in the negative pressure zone of the ventilation device.

[0178] The arrangement of this steam handling device ensures a particularly controlled steam flow through the device.

[0179] Apparatus for handling steam, especially the apparatus described above.

[0180] The apparatus may specifically include at least one tool for reducing the temperature and / or humidity of the extracted steam. The container of the apparatus may specifically include a chassis for receiving a cooling fluid. The cooling fluid may constitute the tool for reducing the temperature and / or humidity of the extracted steam.

[0181] Tools for reducing the temperature and / or humidity of the extracted steam may be located or specifically arranged within the container. In particular, a tool provided outside the container is one that is not formed as part of the container or its components.

[0182] Specifically, a certain amount of cooling fluid that can be arranged in the container can be used as a tool for reducing the temperature and / or humidity of the extracted steam. The container may specifically have a liquid inlet for supplying the cooling fluid. This liquid inlet is specifically separate from, and in particular spaced apart from, the steam inlet and steam outlet. The cooling fluid may specifically be cooling water. The container may specifically have a tap water connection. For further details, please refer to the preceding description.

[0183] The steam handling device is specifically arranged in the cooking appliance so that the steam is drawn through the steam handling device by the fan of the ventilation device, or at least can be drawn in.

[0184] According to one aspect of the invention, the cooking appliance includes a control device by means of which the mixing of cooling fluid in a container and / or the addition of cooling fluid to the container can be controlled.

[0185] Another objective of this invention is to improve a device for extracting cooking fumes.

[0186] This objective is achieved by means of equipment comprising a device for processing steam as described above.

[0187] The advantages stem from those already described. With the help of devices used to handle steam, the moisture content of the steam can be significantly reduced. This prevents undesirable condensation effects, especially in hard-to-reach areas behind kitchen furniture.

[0188] The device used to extract cooking fumes can be an extractor fan. In particular, it can be a device for drawing cooking fumes downwards, which is sometimes also called a trough fan or downdraft fan.

[0189] Devices for handling steam can be integrated into devices for extracting cooking fumes, particularly into trough fans. They can also be designed as standalone modules. In this case, they can be flexibly positioned, for example, in the bottom area of ​​a base cabinet, or in, above, or behind a wall cabinet. In particular, they can be retrofitted into existing exhaust fan systems, especially those that include separate fan modules.

[0190] When using a steam handling device including an exhaust fan, the exact embodiment of the steam handling device can be adapted to its specific conditions. In particular, the dimensions of the steam handling device, especially its container, can accommodate the typically larger volumetric flow rate of the exhaust fan. Specifically, if the steam handling device is designed as a separate module, its dimensions are not limited to the typical installation dimensions of cooking or baking appliances. In particular, the container of the steam handling device can also have a maximum extension greater than 60 cm, particularly greater than 90 cm, and particularly greater than 120 cm in at least one direction.

[0191] Devices for handling steam can be specifically arranged upstream of odor filters (especially activated carbon filters).

[0192] Another objective of this invention is to improve the furnace frame system.

[0193] This objective is achieved by a stove system comprising at least one stove and a device for extracting cooking fumes as described above.

[0194] A cooktop system may specifically be an assembly comprising at least one cooktop and a device for downward extraction of cooking fumes. In this way, it may comprise a single, continuous cooking product carrier plate. Cooking fume inflow openings may be provided within the carrier plate. The cooking fume inflow openings are specifically completely surrounded by the cooking product carrier plate. Specifically, they may be arranged in the central area of ​​the cooking product carrier plate. See EP 2 975 327 B1 for details. Alternatively, the cooking fume inflow openings may be distributed throughout the cooking product carrier plate.

[0195] The grate system can be a compact appliance. This is understood to mean that all components of the grate system are integrated into a universal appliance. This can result in a particularly compact design, especially with a total height of no more than 30cm, no more than 25cm, and no more than 21cm.

[0196] A separate fan module can also be provided as a fan for a device used to extract cooking fumes. The corresponding fan module can be installed with particular flexibility, for example, in the bottom area of ​​a cabinet.

[0197] The steam handling unit can be integrated into the furnace system, particularly into compact appliances. It can also be designed as a separate module. In this case, it can be flexibly positioned, for example, in the bottom area of ​​the cabinet. Specifically, it can be retrofitted into existing furnace systems, especially those with separate fan modules.

[0198] Another objective of this invention is to improve the method for processing steam.

[0199] This goal is achieved through a method that includes the following steps:

[0200] -Provide cooking utensils as described above.

[0201] - Extract steam from the receiving space.

[0202] -Steam is drawn through the steam-processing device as described above.

[0203] As mentioned earlier, steam flow can be controlled particularly well by drawing steam through a device used for steam processing.

[0204] This objective is also achieved through methods used to process steam, in which steam passes through, and in particular is drawn through, between two liquid layers to reduce its temperature and / or relative humidity.

[0205] This has been found to result in a particularly beneficial reduction in the temperature and relative humidity of the steam.

[0206] The two liquid layers are spaced apart from each other, especially in the vertical direction. Specifically, there is a lower liquid layer and an upper liquid layer. The upper liquid layer is particularly supported by a cooling component, especially a cooling component in the form of a metal plate. See the preceding description for more details.

[0207] This objective is further achieved by controlling the steam treatment process by introducing cooling fluid into the steam treatment apparatus in a controlled manner.

[0208] Controlled addition of cooling fluid ensures that the steam is adequately cooled. Furthermore, it reduces the consumption of cooling fluid.

[0209] The addition of fresh water and / or the discharge of wastewater, particularly by pumping, can be carried out on a timed basis. Specifically, it can be done according to a defined process scheme. In this way, the heat capacity of the cooling water can be optimally used for cooling steam. Therefore, cooling water consumption can be reduced, and in particular minimized.

[0210] The cooking process can be selected based on the operating mode of the cooking appliance, especially automatically. In particular, it can be automatically selected based on the temperature and / or humidity of the cooking space. The corresponding process can be stored as different operating modes in the control device.

[0211] The control of the addition of cooling fluid can rely heavily on sensor data. Please refer to the preceding description and the description of the embodiments for details.

[0212] According to one aspect of the invention, the device has different operating modes that differ in the timing of adding cooling fluid to the container.

[0213] In particular, the device can have two, three, four, five, six or more different operating modes.

[0214] The device can also have at least one freely programmable operating mode. In principle, all operating modes can be adjusted. This allows the operating modes provided by the factory to be adjusted according to different conditions, such as different freshwater temperatures.

[0215] Different operating modes will vary in particular due to the timing and / or duration of adding cooling water to the container and / or the amount added in each case.

[0216] For example, the timing can range from 3 seconds to 5 minutes.

[0217] The amount of fresh water added can range from 10 ml to 5 liters, especially from 50 ml to 2 liters.

[0218] The total consumption of cooling water can range from 50 ml / min to 4 liters / min.

[0219] Continuous circulation of cooling water can be generated within the vessel during the operation of the steam handling unit. This can be accomplished with the aid of a circulation pump. In principle, timed circulation is also possible. Specifically, timed circulation can be coupled with a clock timing for the cooling water. The circulation of the cooling water can also be omitted.

[0220] According to one aspect of the invention, before adding fresh cooling water to the container, the cooling water in the container, particularly the cooling water in the chassis, is first pumped out at least partially, particularly most, and preferably completely. Specifically, before adding fresh cooling water to the container, at least 50%, particularly at least 70%, and particularly at least 90% of the cooling water in the chassis can be pumped out. The pumping process can be controlled via a full-level sensor. In particular, the cooling water in the chassis can be pumped out to a degree that the fill level in the chassis is below a predetermined value.

[0221] By pumping out the cooling water from the container before adding new cooling water, you can ensure that the fresh cooling water mixes with as little as possible with the already heated and / or contaminated cooling water, ideally without mixing at all. This reduces water consumption.

[0222] Another objective of this invention is to improve a method of operating cooking utensils.

[0223] This goal is achieved through a method that includes the following steps:

[0224] -Provide cooking utensils as described above.

[0225] - To create conditions in the receiving space where the temperature is within a predetermined temperature range and / or the humidity is within a predetermined humidity range.

[0226] - Controlled extraction of steam from the receiving space,

[0227] - In this process, steam is drawn through a device used to process the steam.

[0228] The advantages stem from those described above.

[0229] According to one aspect of the invention, the extraction and / or treatment of steam is controlled such that the steam in the area of ​​the filter device arranged between the processing device and the fan has a temperature higher than a predetermined maximum temperature for at most a short period of time.

[0230] In this context, "short term" means at most one minute, especially at most 30 seconds, and especially at most 15 seconds.

[0231] By properly controlling the extraction and / or treatment of steam, the filter unit can be made to operate reliably at all times. Furthermore, damage to the filter can be avoided.

[0232] The highest temperature is especially 100℃, especially 80℃, especially 70℃, especially 60℃, especially 50℃, especially 40℃, especially 30℃.

[0233] The extraction and / or treatment of steam can be controlled such that the steam in the area of ​​the filter device has a relative humidity above a predetermined limit for at least a short period of time. This can particularly reach a maximum of 80%, especially a maximum of 70%, especially a maximum of 60%, especially a maximum of 50%, especially a maximum of 40%, especially a maximum of 30%.

[0234] By specifically controlling the steam treatment, it is possible to ensure that the filtration device always operates within its optimal range.

[0235] According to one aspect of the invention, it can be stipulated that if a predetermined maximum temperature and / or a predetermined maximum relative humidity of the steam is exceeded, at least one of the following actions will occur:

[0236] - Reduce suction

[0237] - Add cooling fluid to the steam processing equipment, especially increase the timing of adding cooling fluid to the steam processing equipment.

[0238] - Add fresh air to the steam stream

[0239] - The steam flow is at least partially diverted.

[0240] - Output the corresponding information to the user.

[0241] This can be determined at specific measurement points, particularly by sensor detection, by exceeding the specified maximum temperature and / or the specified maximum relative humidity. The aforementioned sensors can be used for this purpose.

[0242] According to one aspect of the invention, it is possible to omit the addition of cooling water to the steam handling device in one or more operating modes of the cooking appliance. This is possible, for example, provided that the temperature in the cooking space is maintained below a certain limit, particularly below 100°C, particularly below 80°C, particularly below 60°C, and / or provided that the humidity in the cooking space is maintained below a predetermined limit, particularly below 60%, particularly below 50%, particularly below 40%.

[0243] According to one aspect of the invention, before a certain operating mode of the cooking appliance, particularly its fan assembly, is activated, it is possible to provide a means for pumping cooling fluid out of the container, particularly from the chassis. For example, it can be advantageously ensured that the level of cooling fluid in the chassis is below a predetermined limit, provided that the suction of the fan assembly, particularly the volumetric flow rate of the extracted steam, exceeds the predetermined value.

[0244] According to one aspect of the invention, the filling level of the cooling fluid in the container, particularly in the chassis, can be controlled based on the volumetric flow rate of the extracted steam.

[0245] Another objective of the present invention is to improve a method for operating a device for extracting cooking fumes.

[0246] This goal is achieved through a method that includes the following steps:

[0247] - Provides a device for extracting cooking fumes as described above.

[0248] - Use equipment for extracting cooking fumes to generate steam volumetric flow rate.

[0249] - Steam is processed with the aid of a device for processing steam.

[0250] With the aid of a device for handling steam, the humidity of the steam stream can be reduced in particular. Specifically, it can be reduced to a level that does not exceed a maximum predetermined limit.

[0251] According to one aspect of the invention, steam treatment is carried out based on parameters detected by a sensor used to determine the moisture content of the steam.

[0252] According to one aspect of the invention, it provides control over the addition of cooling fluid, particularly cooling water, based on the humidity of the vapor flow that can be detected in particular by a sensor.

[0253] If the specified limit value is exceeded, a warning signal can be issued. If no other measures are available, the user of the device can use the appropriate warning signal to take alternative measures, such as interrupting the cooking process or supplying fresh air to the affected room.

[0254] Further general advantageous details of various aspects of the invention are described again below.

[0255] The container for handling steam particularly has a tray for receiving cooling fluid. The shape and size of the tray are particularly adapted to the shape and size of the cooking appliance. The container is particularly positioned below the receiving space of the cooking appliance. In particular, it has a horizontal cross-section at most as large as the cross-section of the receiving space of the cooking appliance. Preferably, the cross-sectional area of ​​the container is at least half, particularly at least three-quarters, of the cross-sectional area of ​​the receiving space of the cooking appliance, especially the total cross-sectional area of ​​the cooking appliance. A larger surface area can particularly effectively reduce the temperature and / or humidity of the steam.

[0256] The inside of the container, especially its bottom and / or walls, is designed in a way that specifically prevents dirt buildup. In particular, they may have a self-cleaning or antibacterial coating.

[0257] The container preferably has the lowest possible total height. The total height of the container, especially the average distance between the bottom of the container and the lid measured inside them, is preferably no more than 20 cm, preferably no more than 10 cm, and preferably no more than 7 cm.

[0258] The container may have a sloping bottom. The angle of inclination is particularly in the range of 1° to 10°, and especially up to 6°. The bottom may be specifically designed to have a slope, particularly a strictly single-line slope toward the lowest point of the container. A strictly single-line slope is understood as a completely downward path from any point in the container to the lowest point of the container. Fluid can therefore flow from any point on the bottom of the container to the lowest point of the container.

[0259] Advantageously, one or more adjustment tools, such as adjusting screws, can be provided at the container to adjust its precise alignment. This is particularly advantageous if the supporting surfaces for mounting the cooking utensils cannot be perfectly level.

[0260] One or more flow guiding devices can be installed in the container. Specifically, flow guiding devices for cooling fluid flow can be installed in the container's chassis. One or more flow guiding devices for steam flow can also be installed. Specifically, steam flow can be guided along a tortuous structure through the container. This can increase the effective flow path of steam within the container.

[0261] According to another aspect of the invention, the container can be configured such that the free-flow cross-section increases from the steam inlet to the steam outlet. In particular, the steam outlet can be specified to have a larger flow cross-section than the steam inlet.

[0262] Apart from designated inlets and outlets, the container can be airtightly sealed to the outside.

[0263] A circulation pump used to circulate cooling fluid within a container can be part of a loop having a loop passage spaced apart from the flow path. The separate circulation passage may extend at least partially outside the flow path area, particularly to the exterior of the container. It may lead to the container via a circulation passage outlet.

[0264] With the help of a circulating pump, cooling fluid can be pumped back to the pump.

[0265] The maximum delivery rate of the circulating pump can be at least 2 liters / minute, especially at least 3 liters / minute, especially at least 4 liters / minute, especially at least 5 liters / minute, especially at least 8 liters / minute, especially at least 12 liters / minute, especially at least 15 liters / minute.

[0266] The water level sensor can be arranged inside the container. The water level sensor is preferably arranged near the extraction pump. It is more preferably arranged near the lowest point of the container. The distance between the water level sensor and the extraction pump or the lowest point of the container is particularly at most 10 cm, particularly at most 5 cm, and particularly at most 3 cm. The water level sensor can also be arranged, particularly in a corner of the container.

[0267] By means of a water level sensor, it can be ensured that the cooling fluid in the container is at, does not exceed, or is not lower than a predetermined filling height during the operation of the device. The predetermined filling height may be, for example, at least 1 cm, particularly at least 1.5 cm. For example, it may be at most 5 cm, particularly at most 3 cm, particularly at most 2 cm. In particular, it may be at most 50% of the distance between the container chassis and the underside of its top shell or the lowest cooling plate.

[0268] When the container is filled with cooling fluid to a predetermined fill height, the total volume of the cooling fluid can range from 0.5 liters to 10 liters, particularly from 1 liter to 5 liters, and especially up to 3 liters. Size variations may occur, depending on the expected maximum volumetric flow rate.

[0269] To reduce the volume required for a given filling height and container cross-section, liquid displacement protrusions, particularly in the form of embossed patterns, can be provided at the bottom of the container.

[0270] The cooling fluid in the container has a specific temperature of at least 500 cm³. 2 Especially at least 700cm 2 Especially at least 1000cm 2 The free surface. Size deviations may occur, especially depending on the maximum expected volumetric flow rate. For the largest possible reaction surface, it is advantageous to maximize the contact area between the cooling fluid and the vapor flow.

[0271] The container is made of a material, particularly plastic, with a temperature resistance of at least 100°C, particularly at least 180°C, particularly at least 230°C, and particularly at least 300°C.

[0272] The container is made of a material, particularly plastic, that is resistant to media, especially acids and / or alkalis. Attached Figure Description

[0273] Further details and advantages of the present invention will become apparent from the description of exemplary embodiments based on the accompanying drawings, wherein:

[0274] Figure 1 A cross-sectional schematic diagram of a cooking appliance with a controllable ventilation device in its first functional mode is shown.

[0275] Figure 2 It shows that according to Figure 1The diagram shows the second functional mode.

[0276] Figure 3 It shows that according to Figure 1 The diagram shows the device in the third functional mode.

[0277] Figure 4 A partial side view of the cooking space arranged within the outer casing, and a steam handling device connected thereto via fluid conduction, is shown.

[0278] Figure 5 It shows that according to Figure 4 A perspective view of a device for handling steam.

[0279] Figure 6 It is based on Figure 5 An exploded image of a device used for steam processing.

[0280] Figure 7 It shows that according to Figure 5 An illustration of the chassis of a device used for steam processing.

[0281] Figure 8 An illustration shows a cooling plate arranged in a device for processing steam.

[0282] Figure 9 An illustration shows an alternative embodiment of the chassis for a device used to process steam.

[0283] Figure 10 An illustration shows the lid of a steam handling device with a meandering structure.

[0284] Figure 11 A schematic diagram illustrating the flow path of the cooling fluid in the chassis of a device used for steam treatment is shown.

[0285] Figure 12 A cross-section of the apparatus used for processing steam is shown.

[0286] Figure 13 A schematic diagram illustrating the operating principle of a device for processing steam is shown.

[0287] Figure 14 and Figure 15 A perspective view is shown of a connector for linking the cooking space of a cooking appliance to a device for handling steam.

[0288] Figure 16 A schematic cross-sectional view of a furnace frame system designed with assembly units for handling steam is shown, and

[0289] Figure 17A schematic diagram of a device for extracting cooking fumes is shown, which has a modular unit for handling steam and a bottom fan. Detailed Implementation

[0290] In the following description, possible constructions and components of an apparatus for heating and cooking products are illustrated by way of example. Therefore, it will be referred to as cooking appliance 1 in the following description. Specifically, it can be a pressureless cooking appliance. Specifically, it can be an oven, a steamer, a combination steamer (i.e., an oven with steam cooking function), a microwave oven, or a combination appliance having functions selected from the above.

[0291] The cooking appliance 1 has an outer shell 2. The outer shell 2 surrounds a receiving space 3 for receiving cooked food to be heated. The receiving space 3 is also referred to as the cooking space.

[0292] The outer shell 2 can be substantially cubic in shape. In particular, it can have a front side 4 and a rear side 5. In particular, it has a bottom 6 and a top 7. It also has side walls.

[0293] Specifically, the housing 2 has a closable opening 8 for loading cooking products into the receiving space 3. The opening 8 can be closed, particularly in the form of a door 9. The door 9 is specifically a hinged door. Specifically, the door is rotatable about a pivot 10. The pivot 10 is preferably located in the lower region of the door 9 when the door is closed. Alternative arrangements of the door 9 and alternative embodiments of the closing are possible.

[0294] In addition to the opening 8 for loading cooking products into the receiving space 3, the housing 2 also has a fresh air inlet 11 and an exhaust outlet 12 separated from the opening 8.

[0295] The fresh air inlet 11 is preferably located in the area of ​​the front side 4 of the housing 2.

[0296] The exhaust outlet 12 is preferably located in the region of the rear side 5 of the housing 2 or in the region of the side wall.

[0297] The cooking appliance 1 also includes a heating device 13, which is shown schematically only in the figures. The heating device 13 is used to transfer heat energy directly or indirectly to the cooked product to be heated. The heating device 13 may have one or more heating elements. The heating elements may be arranged inside or outside the receiving space 3. Corresponding alternatives are known from the prior art, for example, from DE 10158425 C1.

[0298] The cooking appliance 1 has a device for generating a circulating airflow in the receiving space 3. This device for generating the circulating airflow is schematically shown in the figure as a fan wheel 14. It can preferably be arranged in the area on the rear side of the receiving space 3.

[0299] Furthermore, the cooking appliance 1 includes a ventilation device. This ventilation device can have multiple functions. On one hand, it can be used to generate an airflow for cooling certain components of the cooking appliance 1. On the other hand, it can be used to control the ventilation of the receiving space 3. According to the invention, these functions can be achieved through a single ventilation device. According to an alternative not shown in the figures, ventilation devices can also be provided that are at least partially separate for different functions.

[0300] The ventilation device includes at least one fan 15, which is shown schematically only in the figures. A radial fan is preferred. Alternatively, an axial or cross-flow fan may also be used. Combinations of different fans are also possible. In particular, the ventilation device may comprise a single fan 15 or a single fan unit having one or more fans. For example, multiple fans may be arranged adjacent to each other in a single fan unit. This reduces the installation space required for the fan unit, particularly the overall height. Furthermore, such a fan unit can be controlled in a particularly flexible manner.

[0301] The fan 15 is preferably arranged in the area of ​​the exhaust outlet 12.

[0302] Fan 15 is used to generate volumetric flow rate V ° (here V) ° (This represents the volumetric flow rate dV / dt). The volumetric flow rate V generated by fan 15... ° At a height of 50m 3 In the range of / h, especially up to 100m 3 In the range of / h, especially up to 200m 3 Within a range of / h, especially up to 300m 3 Within a range of / h, especially up to 500m 3 Within the / h area.

[0303] Furthermore, the ventilation device includes a flow guiding system 16. The flow guiding system 16 includes a first subsystem for guiding the flow of cooling air 17. The cooling air 17 is formed, in particular, by drawing fresh air from the housing 2 through the fresh air inlet 11.

[0304] Cooling air 17 is guided in a circuitous manner through the airflow system 16. Specifically, starting from the fresh air inlet 11, it is first guided from the front side 4 of the housing 2 along the upper side of the receiving space 3 to the rear region of the housing 2. Then, it is deflected and guided back to the region of the front side 4 of the housing 2. There, it is again deflected and guided to the exhaust outlet 12 at the rear side 5 of the housing 2. A greater number of deflections, and in particular a greater number of circuitous loops, are also possible.

[0305] Cooling air 17 is fed into the airflow system 16, particularly from the front. Exhaust air 18 is fed into the airflow system 16, particularly from the rear.

[0306] In order to minimize pressure loss in the flow guiding system 16, it is preferable to provide as little deflection as possible and the flow path is designed to be as short as possible.

[0307] The cooling airflow is schematically shown in the diagram by solid arrows.

[0308] Furthermore, the flow guiding system 16 includes a subsystem for guiding the flow of exhaust gas 18 extracted from the receiving space 3. The exhaust gas flow is schematically represented by the dashed arrows in the figure.

[0309] Cooling air 17 drawn in through fresh air inlet 11 can be fed into the area of ​​flow system 16 via feed opening 33 along with the airflow from exhaust 18.

[0310] The airflow guiding system 16 is therefore used to guide the airflow with fresh air drawn into the housing 2 and / or with exhaust gas 18 drawn from the receiving space 3.

[0311] These two subsystems partially overlap. In particular, they are configured to feed the airflow with cooling air 17 to the airflow of exhaust 18 drawn from the receiving space 3 in a controlled manner.

[0312] To control the airflow within the housing 2, the venting device has a control tool for controlling the extraction of exhaust gas 18 from the receiving space 3. Specifically, a controllable valve 19 can be used as the control tool for controlling the extraction of exhaust gas 18 from the receiving space 3. The valve 19 is arranged in the area of ​​the fluid outlet 20 at the bottom of the receiving space 3.

[0313] Downstream of fluid outlet 20, a device for condensing water vapor is arranged, the water vapor being contained in exhaust gas drawn from receiving space 3. The condensation device 28 may include a channel system with tortuous passages. Cooling water 29 may be arranged in the channel system. Fresh water inlet 30 is used to inject cooling water 29 into the condensation device 28. Wastewater pipe 31 is used to drain the condensation device 28. The condensation device 28 typically forms a device 40 for handling steam.

[0314] The diagram only schematically shows the freshwater inlet 30 and the wastewater pipe 31. Together, they are referred to as the water supply connection. The water supply connection can also be used to clean the receiving space 3. For this purpose, the cooking appliance 1 can have a dedicated cleaning program. This enables automatic cleaning of the receiving space 3.

[0315] For details regarding the condenser 28, see, for example, DE 102008012961 A1.

[0316] The control device for controlling the extraction of exhaust gas 18 from the receiving space 3 is connected to the central control unit 21 via signal transmission. The central control unit 21 is arranged within an encapsulated electronic housing 22. The electronic housing 22 is designed to be encapsulated, particularly liquid-tight, and especially vapor-tight. The electronic housing 22 is specifically arranged in the airflow system 16, and particularly in the subsystem for guiding cooling air 17. The cooling air 17 is thus used to cool the electronic housing 22, and particularly to cool the electrical and / or electronic components arranged therein. All electrical and electronic components for controlling the cooking appliance 1 can be arranged within the electronic housing 22.

[0317] As shown in the figure, the electronic housing 22 can be arranged above the receiving space 3, particularly in the area of ​​the top 7 of the housing 2. Alternatively, the electronic housing 22 can be arranged laterally behind or below the receiving space 3, particularly in the area of ​​the bottom 6 of the housing 2. This provides better protection against overheating of electrical and / or electronic components.

[0318] The ventilation system also includes control tools for controlling the supply of fresh air to the receiving space 3. Ventilation valves or dampers, or typically actuating components, particularly controllable actuating components, serve as control tools for controlling the supply of fresh air to the receiving space 3.

[0319] Ventilation valve 23 can be used to close fresh air inlet 11, through which fresh air is fed to receiving space 3. Fresh air can be fed to receiving space 3 from the rear of the instrument. The fresh air fed to receiving space 3 can be supplied from the rear of the instrument in particular without a guiding device. Specifically, it can be supplied via a flow path not connected to fresh air inlet 11. The fresh air supplied to receiving space 3 is particularly independent of the cooling air 17 drawn in through fresh air inlet 11.

[0320] The control tool for controlling the supply of fresh air to the receiving space 3 is connected to the central control unit 21 via signal transmission.

[0321] Control tools for controlling the supply of fresh air to the receiving space 3 are arranged, for example, in the area at the rear of the receiving space 3. Other arrangements are also possible.

[0322] Furthermore, the ventilation device includes at least one control tool for controlling the supply of airflow from the cooling air 17 drawn into the housing 2 to the exhaust airflow drawn from the receiving space 3 into the exhaust 18. This control tool is preferably designed as an adjustable valve 24. It can also be designed as a valve, particularly a multi-way valve, specifically including at least two inlets and one outlet.

[0323] The closing valve 24 is connected to the central control unit 21 via signal transmission.

[0324] Preferably, all control devices of the ventilation system are directly or indirectly connected to each other. Preferably, they are all connected to the central control unit 21 via signal transmission.

[0325] Furthermore, the cooking appliance 1, particularly the ventilation device, includes a device for purifying exhaust gas. A filter module 25 serves as a tool for purifying exhaust gas. The filter module 25 specifically includes an odor filter. In particular, it includes an activated charcoal filter. It may also include a grease filter and / or other filters. The filter module 25 is particularly located in the area of ​​the front side 4 of the cooking appliance 1. It is particularly located behind the removable front panel 26.

[0326] The filter module 25 is preferably removable from the housing 2. Specifically, it is replaceable. In particular, the filter module 25 can be removed from the housing 2 without tools. This facilitates the replacement of the filter module 25.

[0327] The filter module 25 is arranged in the airflow system 16 so that both the exhaust 18 and the cooling air 17 pass through the filter module.

[0328] The filter module 25 is arranged in front of the electronic housing 22 in the flow direction. Therefore, during the operation of the cooking appliance 1, especially during the operation of the ventilation device, purified air flows around the electronic housing 22.

[0329] The filter module 25 is specifically arranged in front of the fan 15 in the flow direction, that is, in the negative pressure zone of the fan 15. The fan 15 therefore experiences purified air during the operation of the ventilation device.

[0330] Sensor device 35 can be arranged in flow system 16 to detect volumetric flow rate V generated by fan 15. ° Temperature and / or humidity. The sensor device 35 is arranged, for example, in the area of ​​the filter module 25. It may also be arranged in the area of ​​the electronic housing 22 or the area of ​​the fan 15. It is preferably arranged upstream of the fan 15.

[0331] The sensor device 35 is preferably arranged on the downstream side of the feed opening 33, in particular at a certain distance from the feed opening 33.

[0332] The details of the ventilation device, and especially the details of the filter module 25, are advantageous, independent of the other details of the cooking appliance 1, and in themselves lead to improvements in the device for heating cooking products.

[0333] The front panel 26 may in particular have a display and / or an operating device with one or more operating elements. This may in particular be a touch-sensitive display (touch screen).

[0334] In particular, the display may have a very dark-tinted front glass (black panel effect). This is used to ensure that the outline between the display, adjacent functional components such as capacitive buttons, and the housing or locking pressure is not visible.

[0335] Furthermore, the cooking appliance 1 includes a sensor device 27 arranged in the receiving space 3. The sensor device 27 includes at least one sensor for detecting the temperature and / or humidity in the receiving space 3. The sensor device 27 is connected to the central control unit 21 via signal transmission. With the aid of the sensor device 27, feedback control of the control tool for the ventilation device, particularly feedback control of the ventilation valve 23 and / or valve 19 and / or valve 24, is possible.

[0336] Furthermore, the cooking appliance 1 has a device 32, which is only schematically shown, for controlling the humidity in the receiving space 3. The device 32 for controlling the humidity in the receiving space 3 is preferably connected to a water supply connection.

[0337] The following describes in detail the device 40 for handling steam, its arrangement in the cooking appliance 1, and its operating principle. The details of the device 40 for handling steam can be used independently of other details of the cooking appliance and can be used advantageously.

[0338] The steam handling device 40 can interact with other components of the cooking appliance 1, particularly with the ventilation device and / or the filter device having the filter module 25.

[0339] The apparatus 40 for handling steam includes a fluid-sealed container having a steam inlet 41 and a steam outlet 42.

[0340] The container has a chassis 43. The chassis 43 is used to receive cooling fluid, particularly cooling fluid in the form of cooling water.

[0341] The container has a lid 44.

[0342] The cover 44 can be detachably attached to the chassis 43. In particular, it can be locked to the chassis 43. For this purpose, locking tools are provided on the chassis 43 and the cover 44, which are in particular in the form of locking lugs 45 having locking flanges and mating grooves 46 therewith.

[0343] Locking tools can be arranged circumferentially at the chassis 43 and the cover 44.

[0344] Other types of connections are also possible. For example, the lid 44 can also be screwed onto the chassis 43. The detachable connection between the lid 44 and the chassis 43 is advantageous when cleaning the container and / or performing maintenance.

[0345] The cover 44 and / or the chassis 43 can be designed with a specific profile. In particular, they can be provided with reinforcing struts 59. For example, the reinforcing struts 59 can be formed in a hexagonal pattern. The reinforcing struts 59 can be used specifically to increase the bending stiffness of the cover 44 and / or the bottom area of ​​the chassis 43.

[0346] The chassis 43 and / or cover 44 are made of a fluid-sealing material. They are particularly made of a heat-resistant material. The material of the chassis 43 and / or cover 44 is particularly heat-resistant to temperatures of at least 100°C, particularly at least 200°C, and particularly at least 300°C.

[0347] The chassis 43 and / or cover 44 are preferably made of rust-resistant material. They are preferably made of acid- and / or alkali-resistant material.

[0348] The chassis 43 and / or cover 44 may be made, particularly in at least some areas, entirely of plastic or metal, especially stainless steel.

[0349] Preferably, the base 43 and the lid 44 are made of the same material. This ensures that they do not leak due to different coefficients of thermal expansion during operation of the cooking appliance 1.

[0350] The lid 44 may be made at least partially, and especially entirely, of the same material as the receiving space 3 of the cooking appliance 1, particularly its bottom wall. Alternatively, the lid 44 may be made of a different material than the bottom wall of the receiving space 3.

[0351] A container is positioned below the receiving space 3. The receiving space 3 is connected to the steam inlet 41 via the fluid outlet 20 in a fluid-conducting manner. A connector 47 provides a connection between the receiving space 3 and the container of the device 40 for handling steam.

[0352] There is a space between the container of device 40 (particularly its lid 44) ​​and the receiving space 3 (particularly its bottom). This space may be at least partially filled with insulating material. Air may also be used as insulation.

[0353] The receiving space 3 has a bottom that slopes downward toward the fluid outlet 20. The bottom of the receiving space 3 may, particularly in certain areas, be designed to slope downward toward the fluid outlet 20. It may also be horizontal in some areas. Preferably, the fluid outlet 20 is located at the lowest point of the receiving space 3.

[0354] The connector 47 has a tubular portion 48. A screen 49 is arranged in the tubular portion 48. The screen 49 may be specifically arranged at the end of the tubular portion 48. The screen 49 may be specifically formed integrally with the tubular portion 48.

[0355] The screen 49 is integrated into the connector 47.

[0356] The connector 47 has a circumferential collar 50. The collar 50 forms a mating shoulder that rests against the bottom of the receiving space 3 when the connector 47 is arranged in the cooking appliance 1. In this case, a sealing member, specifically in the form of a sealing ring 51, is provided between the collar 50 and the bottom of the receiving space 3. The sealing ring 51 is compressible and seals the connection between the connector 47 and the receiving space 3.

[0357] The connector 47 has latching tools 52. The latching tools 52 are distributed on the outer periphery of the tubular portion 48, particularly evenly distributed on the outer periphery of the tubular portion 48. The latching tools 52 can form a bayonet lock. They cooperate with a reaction tool provided for this purpose at the bottom of the receiving space 3.

[0358] The screen 49 has multiple elongated holes. The screen 49 may have a hole in the center. The collar 50 may be formed from the protruding edge of the screen 49.

[0359] The connector 47 is made of plastic, particularly heat-resistant plastic. In at least some regions, it is made of heat-resistant plastic. In at least some regions, it may also be made of metal.

[0360] The connector 47 is preferably made as a single piece. However, a multi-part design is possible.

[0361] The tubular section 48 is specifically cylindrical. It has an outer diameter that matches the inner diameter of the steam inlet 41.

[0362] A seal, particularly in the form of a sealing ring 53, is provided between the tubular portion 48 and the steam inlet 41. The sealing ring 53 is specifically integrated into the vessel of the steam handling device 40. In particular, it can be integrated into the cover 44. The sealing ring 53 allows for a sealing connection between the connector 47 and the vessel of the steam handling device 40. The sealing ring 53 tightly, particularly in a fluid-tight manner, surrounds the tubular portion 48.

[0363] The tubular section 48 can be inserted into the container through the steam inlet 41. This allows for a floating connection between the container of device 40 and the receiving space 3.

[0364] Connector 47 causes the container of device 40 to be aligned with receiving space 3.

[0365] The connector 47 has only a small contact surface with the receiving space 3. Therefore, it can lead to thermal decoupling between the receiving space 3 of the cooking appliance 1 and the container of the device 40.

[0366] Connector 47 can be removed from the inside of receiving space 3. In particular, it can be removed without tools. According to one variant, a special tool is required to remove connector 47.

[0367] Screen 49 is located in the fluid outlet 20 of receiving space 3.

[0368] The connection 47, particularly the seal relative to the receiving space 3 and the container relative to the device 40, prevents liquid or steam from the receiving space 3 or from the device 40 for handling steam from entering unwanted areas of the cooking appliance 1. In particular, this prevents damage to the cooking appliance 1.

[0369] The connector 47 is specifically designed to at least partially, and particularly completely, compensate for the temperature-related linear expansion of the receiving space 3. This ensures that the connection from the receiving space 3 to the container of the device 40 is always fluid-tight to the outside. According to a variant not shown, one or more flexible tools or areas may also be provided for this purpose in the connecting element between the receiving space 3 and the device 40 and / or in the area where it is arranged in the receiving space 3.

[0370] The fluid outlet 20 can be arranged in the front half of the receiving space 3, particularly in the front third. Specifically, it is centrally located between the side walls of the receiving space 3. This is not mandatory. It can also be arranged at the edge of the receiving space 3.

[0371] Steam inlet 41 is located directly below fluid outlet 20. Steam inlet 41 is specifically arranged to be perpendicularly aligned with fluid outlet 20.

[0372] Therefore, the positioning of the fluid outlet 20 in the receiving space 3 can affect the arrangement of the steam inlet 41 in the cover 44 of the device 40. This will affect the flow path extending from the steam inlet 41 to the steam outlet 42.

[0373] A flow connection is formed between the chassis 43 and the cover 44, which connects the steam inlet 41 and the steam outlet 42 in a fluid conduction manner along the flow direction.

[0374] In particular, the container on chassis 43 has rounded edges.

[0375] Steam outlet 42 protrudes upward beyond steam inlet 41.

[0376] Steam outlet 42 is used as a connection for riser pipe 54.

[0377] Device 40 is connected to the fan unit of cooking appliance 1 via riser pipe 54. Riser pipe 54 is specifically a component of flow guiding system 16. Sensor device 55, including one or more sensors for detecting one or more parameters of steam flow, may be arranged in riser pipe 54.

[0378] Specifically, the sensor device 55 may include one or more temperature sensors, one or more humidity sensors, one or more conductivity sensors, one or more volumetric flow sensors and / or other sensors.

[0379] In particular, electrical, mechanical, chemical, or optical sensors can be used as sensors.

[0380] The sensor device 55 is connected to the control device (not shown) in the figure via signal transmission, and is used to control the device 40 for handling steam and / or the ventilation device for controlling the cooking appliance 1 and / or the heating device 13 for controlling the cooking appliance 1.

[0381] The fluid outlet 20 can be arranged in the lower region of the receiving space 3. In particular, this lower region can be shaped as a truncated pyramid. In this case, the top surface of the truncated pyramid formed by the bottom wall of the receiving space 3 does not necessarily have to be parallel to the base plane, which is only geometrically formed and not constituted by material components. This top surface, especially the bottom of the receiving space 3, can be specifically designed to slope downwards at least partially, particularly towards the fluid outlet 20.

[0382] The recess in the bottom of the receiving space 3 can be covered by a cooking space screen. Specifically, the cooking space screen can be arranged in the receiving space 3 such that it is flush with the remaining area at the bottom of the receiving space 3, forming a substantially flat bottom surface. The cooking space screen retains food residue. It prevents the formation of eddies.

[0383] The cooking space screen is removable, making it easier to clean. Specifically, one side can be lifted by pressing down on the other, further facilitating removal.

[0384] The cooking space screen can be designed in a rectangular shape. It can also be configured as non-rectangular or trapezoidal. This ensures that the cooking space screen is pre-defined and clearly aligned at the bottom of the receiving space 3.

[0385] The cooking space screen can be designed such that its longest side is at least half the free width of the receiving space 3. Specifically, the longest side of the cooking space screen is at least 60%, particularly 70%, particularly 80%, and particularly 90% of the free width of the receiving space 3. In the direction perpendicular to it, the cooking space screen has an extension of at least 5 cm, particularly at least 10 cm, particularly at least 15 cm, and particularly at least 20 cm.

[0386] The resulting large screen surface has proven to be particularly advantageous. It leads to a reduction in flow losses. Furthermore, the screen does not clog quickly.

[0387] The cooking space screen can be fixed to the bottom of the receiving space. One or more fixing tools, such as screws or magnets, can be provided for this purpose.

[0388] A cooling plate 56 is disposed between the chassis 43 and the cover 44. The cooling plate 56 is completely disposed inside the container, specifically completely disposed within the chassis 43. It can be clamped between the chassis 43 and the cover 44.

[0389] The cooling plate 56 has an outer circumference that at least partially conforms to the inner circumference of the chassis 43. In particular, the cooling plate 56 can rest on the edge of a support edge formed in the chassis 43.

[0390] The cooling plate 56 has a grooved design. It has a circumferential overflow edge 57.

[0391] As in Figure 8 As exemplarily shown, the cooling plate 56 may have two outlets 75. Generally, the cooling plate 56 has at least one outlet 75 for discharging cooling fluid.

[0392] The socket 77 can be installed on the cooling plate 56 to receive fresh water inlet 65.

[0393] The discharge port 75 may be located near the recess 58 to allow the connector 47 to pass through.

[0394] The recess 58 can form an overflow opening.

[0395] The cooling plate 56 is configured to be flat in some areas. Individual areas of the cooling plate 56 can be configured to be inclined, particularly sloped, and / or arranged within the chassis 43. As a result, a predetermined discharge direction can be achieved for the cooling water applied to the cooling plate 56.

[0396] A defined bending point 78 may be provided in the cooling plate 56. In particular, the cooling plate 56 may be crown-shaped. In this way, the defined expansion direction can be specified in the event of thermal expansion. This ensures that the expansion of the cooling plate 56 will not cause damage to the chassis 43 or the cover 44.

[0397] A recess 58 is provided in the cooling plate 56 for the connector 47 to pass through. Preferably, a sealing ring 53 engages in the recess 58. By means of the sealing ring 53, the passage of the connector 47 through the recess 58 can be sealed.

[0398] Alternatively, the recess 58 can also be used to drain cooling water from the cooling plate 56 into the chassis 43.

[0399] A circulation pump 60 is arranged in the container of the device 40. The circulation pump 60 is used to circulate the cooling fluid in the container, particularly in the chassis 43. It is generally formed as a tool for mixing the cooling fluid in the container.

[0400] The circulation pump 60 can be arranged in a socket in the cover 44 for this purpose. It preferably has a suction area arranged in a pump sump 61 formed in the chassis 43.

[0401] The pump pool 61 is positioned in the lower region 62 relative to the rest of the chassis 43. The pump pool 61 may also be formed by the lower region 62.

[0402] The chassis 43 may have a bottom region 66 that slopes downward toward the lower region 62. This can be, for example, in... Figure 4 As shown in [the image]. Figure 7 In the example, gradient line 67 is drawn.

[0403] Specifically, the chassis 43 can be designed to slope downwards, particularly in a single line, into the area where cooling fluid enters the chassis 43 from the cooling plate 56 through the outlet 75, into the descending area 62.

[0404] The circulation pump 60 has an outlet leading to the chassis 43. The outlet of the circulation pump 60 may be directly opened into the chassis 43, or guided to a specific area of ​​the chassis 43 via a fluid line, particularly in the form of a hose or pipe. The fluid line returning from the circulation pump 60 to the chassis 43 may be guided outside the container of the device 40 in some areas.

[0405] Flow guiding elements, such as one or more valves, particularly multi-way valves, can be arranged in the return line from the circulating pump 60 to the chassis 43. These flow guiding elements are preferably connected to a control device. This makes it possible to control the circulation loop. In particular, more than one flow path can be formed for the circulation loop.

[0406] Specifically, the cooking appliance 1 can have multiple circulation loops with different flow paths. For example, the first flow path can extend entirely within the container. Optional flow paths may include flow branches outside the container, but without a flow area in the receiving space 3. Additives, such as fresh water, detergents (especially antibacterial agents), or other additives, can be selectively added to the circulating liquid via flow branches outside the container. Preferably, the flow path of the circulation loop can be controlled.

[0407] In addition to the container of device 40, another circulation loop may include the receiving space 3 of cooking appliance 1. This loop can be used to clean the receiving space 3. In particular, the corresponding loop can be used to selectively clean the device 40 for handling steam, especially its container, particularly the base 43 and / or lid 44 and / or cooling plate 56. In this way, the device 40 for handling steam, especially its container, can be cleaned simultaneously.

[0408] The device 40 may include a pump 63 for pumping fluids, particularly cooling water and / or non-potable water, from the chassis 43.

[0409] Specifically, the device 40 may include a first pump in the form of a circulation pump 60 and a second pump in the form of a pump 63.

[0410] Two pumps can be arranged next to each other.

[0411] The two pumps can be constructed in essentially the same way.

[0412] Instead of two pumps, a single pump and a suitable actuator can be used. Specifically, the pump can switch between a circulating mode and a pump-off mode. This can also be achieved, specifically, via different positions of the actuator.

[0413] Pump 63 may be disposed in a socket provided for this purpose in cover 44. It preferably has a suction area arranged in a pump sump 61 formed in chassis 43. Preferably, the pump sump 61 of pump 63 is arranged at and / or forms the lowest point of chassis 43.

[0414] One or more adjustment tools, particularly in the form of adjustment screws, can be provided for aligning the base 43. This facilitates precise alignment of the base 43. In particular, this ensures that the base 43 can be precisely aligned regardless of the specific conditions of the intended installation or placement location of the cooking appliance 1. With the aid of the adjustment tools, targeted alignment of the base 43 is possible even if the cooking appliance 1 will be placed on a non-perfectly level mounting surface.

[0415] A fill level sensor 64 may be arranged in the container of device 40. The fill level sensor 64 is connected to a control device for controlling the supply and / or discharge of cooling fluid to the container via signal transmission. The fill level sensor 64 may also be connected to the central control device 21 of the cooking appliance 1 via signal transmission.

[0416] The device 40 has a tap water connection. This tap water connection can be used to feed cooling fluid, particularly in the form of fresh water, to the container.

[0417] In particular, the cooling fluid in the form of fresh water can be supplied to the device 40, for example, via a circulation loop having a circulation pump 60 and / or a dedicated fresh water inlet 65. In principle, fresh water can also be supplied via a steam inlet 41.

[0418] Fresh water can be supplied to the cooling plate 56 via the fresh water inlet 65. The fresh water can be used to form a cooling medium for cooling the cooling plate 56.

[0419] The system can be configured to detect the temperature of the cooling plate 56 using one or more sensors. These sensors can be connected to a control device for controlling the addition of fresh water to the cooling plate 56 via signal transmission. Specifically, the addition of fresh water to the cooling plate 56 can be controlled by a controller. Specifically, this addition can be based on the temperature of the cooling plate 56. Other parameters, such as the humidity of the extracted steam and / or the volumetric flow rate and / or functional mode of the fan unit, can also be considered when adding cooling water to the cooling plate 56.

[0420] The bottom region 66 can be configured to be flat. According to... Figure 9 In the exemplary variant shown, the bottom region 66 has a protrusion 68. This protrusion 68 can be used to reduce the volume of liquid in the chassis 43 at a given fill level.

[0421] according to Figure 6 and Figure 7 In the variant shown, the bottom region 66 is configured to be flat, and in particular, there are no flow guides.

[0422] like Figure 9 As shown in the example, the chassis 43 can be configured to be divided into multiple sub-regions 661, 662, particularly starting from the bottom region 66. The sub-regions can be separated from each other, particularly by a flow guide in the form of a partition wall 69.

[0423] The partition wall 69 can be designed to reduce or completely prevent transmission from different sub-regions 66. i 66 j Mixing of cooling fluids (i≠j).

[0424] Generally, the mixing of cooling fluids occurs in a given sub-region 66 i Nebi in two different subregions 66 i 66 j The relationship between (i≠j) is more complete.

[0425] Specifically, if chassis 43 is subdivided into separate sub-regions 66 i Where i = 1..n; 2 ≤

[0426] With n, especially n≤10, especially n≤5, especially n≤3, multi-stage cooling of the extracted steam can be achieved. In particular, different sub-regions can be controlled independently. i The temperature of the cooling water in the sub-region 662. In this case, it can be set to maintain the cooling water temperature in the sub-region 662 closest to the steam outlet 42 higher than in other sub-regions 66. i Within the low temperature range of the cooling water in (i≠2), the other sub-region 66 i In particular, the cooling water in sub-region 661 closest to steam inlet 41.

[0427] like Figure 10 As illustrated in the figure, a tortuous structure can be provided in the container of device 40 to define the tortuous flow path of steam through the container.

[0428] The tortuous structure is formed, in particular, by a flow guide tool inserted into the container, which is specifically in the form of a flow guide wall 70. The flow guide wall 70 can be used to increase the length of the flow path of the extracted steam in the container.

[0429] like Figure 10 As illustrated by way of example, the flow guide walls 70 can be arranged on the lid 44 of the container. In particular, they can be integrally formed with or attached to the lid 44 of the container. This is particularly possible for variants in which the cooling plate 56 is omitted. In variants with the cooling plate 56, the flow guide walls 70 are also specifically formed below the cooling plate 56, that is, in the region between the cooling plate 56 and the base plate 43.

[0430] The guide wall 70 preferably does not extend into the bottom region 66 of the chassis 43. Specifically, it is spaced apart from the bottom region 66 of the chassis 43. The distance between the guide wall 70 and the bottom region 66 of the chassis 43 is preferably less than the level of cooling fluid in the chassis 43 intended for operation of the device 40. The guide wall 70 is specifically designed such that during operation of the device 40, particularly if the device 40 is filled with cooling fluid up to a predetermined level, the guide wall 70 is particularly immersed in the cooling fluid in the region of its free edge. Below the guide wall 70, the cooling fluid is preferably circulated within the chassis, particularly in its bottom region 66, or in multiple sub-regions 66. i In this case, it cycles through the bottom region 66.

[0431] Figure 11 The flow path of the circulating flow 71 of cooling fluid in the chassis 43 is schematically shown.

[0432] and, Figure 11 The flow path of the external flow branch 72 from the circulating pump 60 back to the chassis 43 is schematically shown. The flow path 73 to the pump 63 and from the pump 63 to the wastewater pipe 74 is also schematically shown.

[0433] As in Figure 11 As schematically shown, chassis 43 is preferably designed without dead zones. In particular, complete mixing of the cooling fluid in chassis 43 can be achieved by means of circulation pump 60.

[0434] In the following text, references are illustrative. Figure 13The operating principle of the device 40 will be described below. During the operation of the cooking appliance 1, the steam generated in the receiving space 3 can escape from the receiving space 3 via the fluid outlet 20. In this case, it enters the container of the device 40 for processing steam via the steam inlet 41.

[0435] In particular, steam can be extracted from the receiving space 3 by means of a ventilation device, especially by means of a fan 15. The device 40 is specifically arranged in the negative pressure zone of the ventilation device.

[0436] In device 40, steam flows from steam inlet 41 to steam outlet 42 along a predetermined flow path.

[0437] In this case, steam flows along the flow path between the chassis 43 and the cover 44. In particular, it flows between the chassis 43 and the cooling plate 56.

[0438] During operation of the device 40, the chassis 43 is filled to a predetermined fill level with a cooling fluid, particularly in the form of cooling water. The cooling fluid forms a surface 76 that serves as a cooling component. The cooling fluid in the chassis 43 specifically forms a film or layer containing the cooling fluid.

[0439] Furthermore, a cooling fluid, specifically in the form of fresh water, is added to the container via a fresh water inlet 65. The cooling water is applied to the cooling plate 56, specifically through the fresh water inlet 65. The cooling plate 56 is thus cooled. Specifically, it forms a component of the heat exchanger. The cooling fluid forms another film or layer on the cooling plate 56. Steam is thus guided between the two liquid layers in the device 40. Condensation of the steam occurs on the surface 76 of the cooling fluid in the chassis 43. Condensation of the steam also occurs on the underside of the cooling plate 56. Heat and moisture are extracted, particularly from the steam, as heat and moisture pass through the device 40. Excess cooling fluid can drip from the cooling plate 56 onto the chassis 43.

[0440] The cooling fluid level in chassis 43 can be monitored by means of a fill level sensor 64. If the predetermined fill level is exceeded, the excess cooling fluid can be pumped out of chassis 43 by means of a pump 63.

[0441] Cooling fluid can also be added to or pumped out of the pan 43, depending on the function mode of the cooking appliance 1. See PCT / EP2020 / 060413 for the different function modes of the cooking appliance 1. In particular, cooling fluid can be pumped at least partially, and especially completely, from the pan 43 for the rapid extraction of steam from the receiving space 3.

[0442] Specifically, the filling level of the cooling fluid in the chassis 43 can be adjusted according to the functional mode of the cooking appliance 1, particularly according to the volumetric flow rate generated by the fan 15. The filling level of the cooling fluid in the chassis 43 can be controlled by means of a filling level sensor 64.

[0443] The addition of cooling fluid and / or its circulation within chassis 43 can preferably be performed in a controlled manner. The addition of cooling fluid, particularly through fresh water inlet 65, can be performed, especially in a timed manner.

[0444] The apparatus 40 for processing steam can have particularly different operating modes, which differ in the timing of adding cooling fluid to the container. The following table summarizes an exemplary overview of the different operating modes of the apparatus 40 for processing steam.

[0445] Overview of operating modes

[0446]

[0447]

[0448] (*) Example values

[0449] The rate of fresh water addition can range from 100 ml / min to 10 liters / min. In particular, it can range from 1 liter / min to 5 liters / min.

[0450] With continuous addition of fresh water, the maximum water consumption is particularly in the range of 50 liters / hour to 500 liters / hour, and particularly in the range of 70 liters / hour to 200 liters / hour.

[0451] The methods for cleaning the receiving space 3 and / or for handling steam are described below using examples and keywords.

[0452] For cleaning purposes, a cleaning unit containing a cleaning agent, particularly a variety of cleaning agents, can be arranged in the receiving space 3. The cleaning unit can be designed as a box. For details, refer to DE 102020204707.3, which is fully incorporated herein by reference.

[0453] The cleaning method may include the following steps in sequence or at least a selection thereof:

[0454] 1. Circulate water from the container of device 40 into the cooking space for approximately 10 minutes, heating it to approximately 50°C and circulating it while still warm. This is used to loosen grease / contaminants.

[0455] 2. Pump out the wastewater and fill the container of device 40 with fresh water.

[0456] 3. Allow fresh water to circulate briefly through the cooking space.

[0457] 4. Pump out the wastewater again and fill the container of device 40 with fresh water.

[0458] 5. Water is circulated from the container of device 40 to the cooking space, thereby heating it to approximately 65°C. This is used to release the cleaning agent (lye) from the container.

[0459] 6. Continuously circulate the water and detergent (alkaline solution) at 65°C for approximately 60 minutes. Simultaneously, continue circulating the solution inside the container of device 40 for 2 to 10 minutes.

[0460] 7. Pump out the water / alkali mixture and fill the container of device 40 with fresh water.

[0461] 8. Circulate the fresh water through the cooking space three times, pump it out again, and refill the container of device 40 with fresh water. This is used to completely rinse the lye out of the cooking appliance 1.

[0462] 9. Water is circulated from the container of device 40 to the cooking space, thereby heating it to approximately 95°C. This is used to release the decalcifying agent (citric acid) from the container.

[0463] 10. Circulate the water and decalcifying agent (citric acid) continuously at 90°C for approximately 20 minutes. Simultaneously, continue circulating the mixture inside the container of device 40 for 2 to 10 minutes.

[0464] 11. Pump out the water-decalcifying agent mixture and fill the container of device 40 with fresh water.

[0465] 12. Circulate the fresh water through the cooking space three times, pump it out again, and refill the container of device 40 with fresh water. This is used to completely rinse the acid out of the cooking appliance 1.

[0466] Cleaning agents and decalcifying agents can be introduced into receiving space 3 via a box. This box can contain cleaning agents and / or decalcifying agents. In particular, an alkaline solution of caustic soda is used as the cleaning agent.

[0467] Citric acid, in particular, is used as a decalcifying agent. Other acids are also possible.

[0468] For further details about the box, please refer again to DE 102020204707.3.

[0469] The following reference Figure 16 and Figure 17 Other possible uses of the apparatus 40 for handling steam are described.

[0470] The device 40 for handling steam can also be used to improve the device 80 for extracting cooking fumes. In this case, it is particularly suitable for the typically significantly higher suction capacity of such exhaust fan equipment. In particular, its size can be larger, taking into account the larger maximum volumetric flow rate.

[0471] The device 80 for extracting cooking fumes can be designed as an exhaust fan. Specifically, it can be designed as a device for downward extraction of cooking fumes. Such a device 80 is also referred to as a trough fan or downdraft system, or, particularly, as a trough extractor if integrated into the cooktop. Specifically, the device 80 can be part of a cooktop system 81 that includes one or more cooktops 82.

[0472] Specifically, the grate system 81 can be designed as an assembly unit. In particular, all components of the grate system 81 can be integrated into a single appliance. This design of the grate system 81 is also referred to as a compact appliance. Such appliances are known, for example, from EP2975327 B1, the description of which is herein referenced.

[0473] The cooktop system 81 has a cooking product carrier 83, particularly in the form of a glass-ceramic plate. The cooking product carrier 83 can be easily configured to be continuous. In particular, it can have an inlet 84 for steam, particularly steam in the form of cooking fumes.

[0474] The cooktop system 81 has electronic components, particularly in the form of cooktop electronics 85. This is shown only schematically in the figure. The cooktop electronics 85 is arranged below the cooking product carrier 83.

[0475] Additionally, the cooktop system 81 includes one, two, or more fans 86. A steam handling device 40 may be positioned in the flow area between the cooking fume inlet 84 and the fan 86. Alternatively, the device 40 may be arranged downstream of the fan 86.

[0476] Preferably, the device 40 is arranged below the furnace frame electronics 85. This reduces the risk of damage to the furnace frame electronics 85 from cooling water from the device 40. Preferably, all cooling water flow-carrying components of the device are arranged below the furnace frame electronics 85, particularly completely below it, and / or below the electrical or electronic components of the control device of the furnace frame system 81.

[0477] The device 40 for handling steam can specifically form a cooking fume extraction chamber or replace such a cooking fume extraction chamber.

[0478] A filter 87, particularly a grease filter, can be installed in the flow area between the cooking fume inlet 84 and the steam inlet 41.

[0479] The furnace rack system 81 may have one or more additional filters, particularly odor filters, especially activated carbon filters, UV filters or plasma filters.

[0480] The furnace frame system 81 may have one or more filters downstream of the fan 86. In particular, it may have an odor filter downstream of the fan 86, which is especially in the form of an activated carbon filter.

[0481] like Figure 17 As schematically shown, the steam handling device 40 and / or fan 86 can be arranged in the bottom area 88 of the cabinet 89. They can also be arranged on the cabinet. In particular, they can be designed as separate modules that can be positioned substantially freely.

[0482] The steam handling device 40 can be integrated, or in particular retrofitted, into an existing appliance, which in particular includes an exhaust fan comprising at least one cooking fume extraction chamber. The steam handling device 40 can be integrated into or replace the cooking fume extraction chamber. The dimensions of the steam handling device 40, and in particular the arrangement and / or design of the steam inlet 41 and the steam outlet 42, can be adapted to the corresponding details of the cooking fume extraction chamber.

[0483] With the aid of the steam handling device 40, the humidity of the steam can be significantly reduced. This reliably prevents moisture from accumulating in areas with kitchen furniture, especially in hard-to-reach areas (e.g., behind kitchen furniture). With the aid of the steam handling device 40, condensation of moisture from the steam on masonry walls and / or furniture can be particularly prevented.

[0484] In the following text, independent of specific embodiments, further details and advantages of the invention will be described again using keywords.

[0485] Preferably, the inner side of the container, particularly the inner side of the chassis 43 and / or the lid 44 and / or the surface of the cooling plate 56, may have an antifouling coating and / or an antibacterial coating.

[0486] A metering component can be provided for adding fresh water to the container of device 40. The metering component is specifically designed to time the addition of fresh water.

[0487] When cooling water is discharged from cooling plate 56, a water curtain can be formed. Cooling water can also flow through multiple individual openings in cooling plate 56 into chassis 43. This increases the surface area of ​​cooling water available for reaction with the steam flow (the so-called rain effect).

[0488] The cooling water discharged from cooling plate 56 can also be used for heat transfer and condensation of the steam flow.

[0489] The cooling plate 56 may have a rolled and / or embossed surface texture. It may also have a polished surface in at least some areas, particularly in its underside. This can improve cooling efficiency and / or the condensation of steam on the cooling plate 56.

[0490] Heat sinks or other heat dissipation components can be arranged at the cooling plate 56. In principle, such components can extend to the outside of the container of the device 40 through the cover 44. In particular, the cooling plate 56 can be designed so that it can be cooled from the outside of the container. In particular, it can be connected in a heat transfer manner to a heat exchanger arranged outside the container of the device 40.

[0491] The device 40 is designed to enable continuous steam separation and short-term venting of the receiving space 3. It is preferably designed to keep flow loss at the lowest possible level.

[0492] Depending on the operating mode, the addition of fresh water and / or the pumping out of wastewater can be switched according to a defined process scheme. This allows for particularly good utilization of the heat capacity of fresh water, thus reducing water consumption.

[0493] The flow directions of the circulating flow in chassis 43 and the steam drawn from receiving space 3 can be at least partially opposite. The circulating flow can specifically form a counter-current heat exchanger.

[0494] In particular, the circulating flow may have a component in the region of the chassis 43 adjacent to the steam outlet 42, which is opposite to the component of the steam flow in that region, and in particular opposite to the direction given by the connecting line from the steam inlet 41 to the steam outlet 42.

[0495] Specifically, the device 40 may have a connection to a freshwater and / or wastewater network. Inside the cooking appliance 1, rather than at the tap water connection, the device 40 may also have a freshwater reservoir and a wastewater reservoir. The freshwater and wastewater reservoirs are preferably removed manually from the outer casing 2 of the cooking appliance 1 without tools. Specifically, they can be filled and emptied manually.

[0496] The fill level sensor 64 may include a float, conductivity meter, rangefinder, particularly an ultrasonic rangefinder or laser rangefinder or other sensors.

[0497] The container of device 40, particularly the chassis 43, all components of the container, and all components arranged within the container, are resistant to acidic media, particularly citric acid and / or carbonic acid (sodium carbonate dissolved in water). Preferably, they are also resistant to alkaline media, particularly caustic soda.

[0498] Preferably, the free surface of the cooling water in the chassis 43 is as large as possible relative to the bottom region of the chassis 43. The ratio of the free surface of the cooling water in the chassis 43 to the bottom region of the chassis 43 is particularly at least 0.5, particularly at least 0.7, particularly at least 0.9, and particularly at least 0.95.

[0499] The large surface area of ​​the cooling water ensures that as much of the reaction surface as possible is available for cooling and / or condensation of the vapor stream.

[0500] To cool the steam stream particularly effectively, one or more tools can be provided to increase the free surface area of ​​the cooling water in the container. These tools may include a selection of dripping tools, atomizing tools, and vortexing tools. Such tools can be specifically configured to add fresh water to the device 40. In this case, it is expected that the corresponding tools will not be clogged due to impurities.

[0501] The pressure generating tool can be set to drip and / or atomize cooling water.

[0502] To improve the cooling of the steam flow, multi-stage cooling, particularly pre-cooling and post-cooling, can be provided. This can further reduce water consumption.

[0503] It has been shown that it is advantageous to keep the volume of cooling water in chassis 43 as small as possible. Therefore, the cooling water or other fluids in chassis 43 can be pumped out and / or replaced very quickly.

[0504] Wave-damping components can be configured to reduce, and in particular prevent, the formation of waves in the chassis 43. These wave-damping components are preferably positioned intersecting the flow direction of the steam flow.

[0505] In particular, the retaining element in the form of a screen can be configured to protect the first and second pumps.

Claims

1. An apparatus (40) for processing steam, comprising: a fluid-tight container with: steam an inlet (41), a steam outlet (42) and a throughflow connection, in particular along a flow direction, connecting the steam inlet (41) to the steam outlet (42), wherein the container can be at least in some regions filled with cooling fluid; and at least one means for actively mixing the cooling fluid in the container, characterized in that a circulation pump (60) serves as a means for actively mixing the cooling fluid in the container, and a switch is arranged downstream of the outlet of the circulation pump (60), by means of which a switch between different circulation loops is possible.

2. The apparatus (40) according to claim 1, characterized in that The container comprises a base pan (43) and a lid (44).

3. The apparatus (40) according to claim 2, characterized in that The base pan (43) has a bottom region (66) which is inclined towards a lower part (62).

4. The apparatus (40) according to claim 2, characterized in that the apparatus (40) is designed in such a way that the steam can undergo a multi-stage cooling when passing through the throughflow connection.

5. The apparatus (40) according to claim 4, characterized in that A plurality of sub-regions, at least partially separated from one another, are formed in the base pan.

6. The apparatus (40) according to claim 2, characterized in that at least one means for adding cooling fluid to the container, and at least one cooling member in the form of a rigid body is arranged in the container.

7. The apparatus (40) according to claim 6, characterized in that The cooling member is liquid-cooled.

8. The apparatus (40) according to claim 6 or 7, characterized by An inlet (65) through which cooling fluid can be supplied to the cooling member.

9. The apparatus (40) according to claim 6 or 7, characterized in that The cooling members (56) each have one or more defined outlets (75) for discharging cooling fluid into the base pan (43) of the container.

10. The apparatus (40) according to any one of claims 1 to 5, characterized in that the fluid-tight container comprises at least one inlet (65) for feeding cooling fluid to the container, wherein cooling fluid can be fed to the container in such a way that it extends in some regions of the throughflow connection between at least two liquid layers.

11. The apparatus (40) according to any one of claims 1 to 4, characterized in that The container: has a plurality of sub-regions for cooling fluid, which are at least partially separated from one another by flow-conducting means, and / or has at least one inlet opening (65) for cooling fluid, which is arranged in a region of the throughflow connection closer to the steam outlet (42) than to the steam inlet (41) in such a way that cooling fluid can be fed into the container.

12. A cooking appliance (1) for cooking food, comprising: a receiving space (3) for receiving and heating a cooking product and comprising: a loading aperture (8) for loading the receiving space (3) with a cooking product, and a fluid outlet (20) for discharging steam from the receiving space (3), an apparatus (40) according to any one of claims 1 to 11, wherein the fluid outlet (20) of the receiving space (3) is connected to the steam inlet (41) of the apparatus (40) in a fluid-conducting manner.

13. The cooking appliance (1) according to claim 12, characterized in that, For the connection of the fluid outlet (20) of the receiving space (3) to the steam inlet (41) of the device (40), a reversibly releasable connection piece (47) is provided, which can be locked in a sealing manner in the receiving space (3) and immersed in the container through the steam inlet (41).

14. The cooking appliance (1) according to claim 13, characterized in that, The connection piece (47) is movably immersed in the container.

15. The cooking appliance (1 ) according to any one of claims 12 to 14, characterized in that, It comprises two circulation loops, one of which comprises the receiving space (3) and the container of the device (40), and the other only the container of the device (40) without the receiving space (3).

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