Steam cooker

Abstract

Steam cooking appliance (100), in particular steam cooking drawer (102), with - a device body (110) that surrounds an interior (112) of the steam cooker (100), - a steam cooking area (120) which is designed to be closable in the interior (112), - a water tank (130) with a tank volume (132) for receiving water (134), which is arranged and configured to be connectable to the steam cooking area (120) of the steam cooking appliance (100) via a water supply system (180) and to be removable within a receiving area (115) of the appliance body (110), wherein the water tank (130) has an inlet valve (150) for discharging the water (134) from the water tank (130) into the water supply system (180) and a check valve (152) for returning used water (134) from the water supply system (180) back into the water tank (130), and wherein the check valve (152) is surrounded by a check barrier (170) through which the supplied used water (134) can be transferred into the tank volume (132), so that this Used water (134) is prevented from flowing back to the non-return valve (152) by the non-return barrier (170).

Description

[0001] The invention relates to a steam cooking appliance, in particular a steam cooking drawer.

[0002] Steam cookers with various designs are generally known. In particular, it is known that steam is introduced into a steam cooking chamber via a water tank within the steam cooker. The water tank is connected to a water supply system within the steam cooker, which, via a heating element, enables steam cooking in the supplied steam.

[0003] Document DE 10 2007 048 200 A1 describes, by way of example, a steam cooking appliance in which access to the water tank is possible via a control panel.

[0004] It is also generally known to provide a steam cooking appliance as a steam cooking drawer, which can be inserted into a furniture unit like a drawer. For example, EP 4293285 A1 describes a cooking device whose water supply system enables a particularly compact design, so that the cooking device can be provided, for example, as a steam cooking drawer.

[0005] Against this background, the invention aims to provide an improved steam cooking appliance, in particular a steam cooking appliance that is particularly easy to clean.

[0006] According to the invention, this problem is solved by a steam cooking appliance with the features of claim 1. Advantageous embodiments and further developments of the invention are described in the dependent claims.

[0007] In particular, a steam cooking appliance, especially a steam cooking drawer, is proposed to solve this problem, with - a device body that surrounds an interior space of the steam cooker, - a steam cooking area that can be closed off in the interior, - a water tank with a tank volume for receiving water, which is arranged and designed to be connectable to the steam cooking area via a water supply system of the steam cooking appliance and to be removable within a receiving area of ​​the appliance body, wherein the water tank has an inlet valve for discharging water from the water tank into the water supply system and a check valve for returning used water from the water supply system back into the water tank, and wherein the check valve is surrounded by a check barrier through which the supplied used water can be transferred into the tank volume, so that this used water is prevented from flowing back to the check valve by the check barrier.

[0008] Within the scope of the invention, it was recognized that for an easily cleaned water supply system, the used water should not flow back from the water tank into the water supply system. To prevent such backflow, the invention proposes a backflow barrier around the check valve. This backflow barrier ensures that only small quantities of returned used water, which has not passed through the barrier, can at least theoretically enter the water supply system. The probability of such backflow can be further reduced by appropriately designing the check valve.

[0009] The advantages achievable with the invention, besides this reduction of potential backflow, also lie in the simple structure of the water tank. Water can be drawn from the tank for the steam cooking process, and later the used water can be returned to the tank and manually removed. This reliably reduces contamination of the water system by used water. Furthermore, the return of the used water to the tank can be accompanied by rinsing the water system. This allows for particularly effective automated or semi-automated cleaning of the water system.

[0010] Finally, the steam cooking appliance according to the invention is also advantageous in that it can be manufactured particularly simply and robustly. For example, the water tank according to the invention can be manufactured using a suitable casting, pressing, and / or pressure process with a backflow barrier. Therefore, only minor modifications compared to known designs of steam cooking appliances are necessary to manufacture the steam cooking appliance according to the invention.

[0011] The steam cooking area is preferably sealable in the sense that an area for cooking is essentially sealed watertight, for example by means of a suitable wall, to ensure that moisture does not escape from the steam cooking appliance during the cooking process and thereby damage, for example, a furniture body or the like.

[0012] The water tank is a water tank in the sense that it provides the tank volume into which water can be added for the cooking process. Alternatively or additionally, other liquids or water additives can obviously also be added to the water tank according to the invention. In particular, a descaling agent can be added to the water tank.

[0013] The steam cooking device according to the invention is particularly preferably provided as a steam cooking drawer. Such a steam cooking drawer can be structured particularly simply thanks to the water flow system according to the invention, thus providing a particularly efficient use of installation space. It follows from the above that the steam cooking device according to the invention can also be a different type of kitchen appliance than a steam cooking drawer. In particular, the steam cooking device can also be a classic steam cooker and / or a Dialog oven.

[0014] Preferred embodiments of the steam cooking appliance according to the invention are described below.

[0015] In a particularly preferred embodiment, the barrier height of the backflow barrier is higher than a predetermined fill level of the water tank to prevent the backflow of used water to the backflow valve. This embodiment reliably prevents water from the water tank from unintentionally entering the water supply system of the steam cooker through the backflow valve. In particular, it ensures that clean water enters the water supply system only through the inlet valve and not through the backflow valve. The difference between the fill level and the barrier height is preferably large enough to prevent accidental overflow of the water tank into the backflow barrier. Preferably, this difference is greater than 0.5 cm, particularly greater than 0.75 cm, and most preferably greater than 1 cm.

[0016] In a further advantageous embodiment, the backflow barrier has a tubular shape around the check valve. Such a tubular shape allows the backflow barrier to be particularly compact. In particular, the tubular backflow barrier can be made especially robust. The tubular shape essentially describes a shell shape, with a lower opening located in the area of ​​the check valve and an upper opening directing the water back into the water tank. According to the invention, a tubular shape is also present with a square or only partially round shell shape.

[0017] In a particularly preferred embodiment of the preceding design, the backflow barrier is open in a direction facing the top of the water tank. In this embodiment, the water overflowing the backflow barrier flows directly into the water tank. This allows for a particularly simple water flow structure within the water tank. Alternatively or additionally, the opening for the return flow of the used water can be provided via an opening in the outer surface of the tubular backflow barrier and / or via a buffer volume for used water.

[0018] In a further advantageous embodiment, the inlet valve and / or the check valve are located on the underside of the water tank. Such an arrangement of the valves ensures that water surrounding the respective valve collects in the valve area. Furthermore, a connection between the respective valve and the water supply system can form part of a tank receptacle for the water tank within the device body, for example, by means of a positive-locking connection and / or a snap-fit ​​or clamping connection.

[0019] In a further preferred embodiment, the inlet valve and / or the check valve are designed as a non-return valve. In this embodiment, the inlet valve and / or the check valve can be provided in a particularly simple and robust manner. In particular, the backflow of used water through the check valve into the water supply system can be reliably prevented.

[0020] In another embodiment, at least one side wall of the backflow barrier is formed by a side wall of the water tank. In this embodiment, the tank side wall can be used particularly advantageously both as a wall of the water tank and as a wall for the backflow barrier. This allows for a reduction in the number of barrier components of the backflow barrier within the water tank. As a result, the backflow barrier, and consequently the water tank, can be provided with very little material and therefore with very little weight.

[0021] In a further embodiment, at least one side wall of the backflow barrier is formed by a cross brace of the water tank, the cross brace connecting two opposite sides of the water tank. In this embodiment, the backflow barrier advantageously increases the stability of the water tank. In particular, the cross brace prevents deflection of the side walls relative to each other. Preferably, the cross brace has at least one open section to allow a fluidic connection between the two sections of the water tank separated by the cross brace.

[0022] In another embodiment, the backflow barrier is designed as a common component with the other side walls of the water tank. This makes the water tank particularly easy to manufacture. For example, the water tank with the backflow barrier can be produced by a printing process, in particular a 3D printing process, or a casting process. This can advantageously reduce the number of manufacturing steps for the water tank according to the invention. Preferably, the water tank is made of a plastic.

[0023] In a further advantageous embodiment, the non-return valve and / or the inlet valve form part of a plug-in connection for the detachable insertion of the water tank into the appliance body. Such a plug-in connection allows the water tank to be held particularly securely and reliably in a tank receptacle of the steam cooker's appliance body. Preferably, in this embodiment, the inlet valve and / or the non-return valve are located on the same side of the water tank, such as on the underside of the water tank. In this variant, the water tank can be inserted into the tank receptacle simply and intuitively.

[0024] In another embodiment, the water supply system includes a pump unit designed to open and close the inlet valve and / or the check valve by means of a corresponding overpressure or underpressure. In this embodiment, the inlet valve and / or the check valve are hydrodynamically actuated via the pump unit, resulting in a particularly low-maintenance and robust water supply system. In particular, additional electronic components for controlling the valves can be avoided.

[0025] In a further embodiment, the water tank has a removable lid with at least one opening for emptying and / or filling the water tank, wherein the at least one opening is located outside the area of ​​the backflow barrier in order to prevent the backflow barrier from filling. In this embodiment, simple filling and emptying of the water tank is combined with the backflow barrier according to the invention. The position of the opening of the removable lid allows for particularly reliable filling of the water tank with water without filling the backflow barrier.

[0026] In an advantageous embodiment, the installation height of the appliance area is less than 45 cm, and in particular less than 30 cm. Such dimensions allow for particularly easy integration of the steam cooker into commercially available designs of external kitchen cabinetry. Furthermore, such dimensions illustrate that the water tank according to the invention can be provided in a particularly compact manner within the steam cooker, thus enabling even low installation heights for such steam cookers.

[0027] According to a further aspect of the invention, a method for operating a steam cooking appliance, in particular a steam cooking drawer, is proposed to solve the aforementioned problem. The method comprises the steps: - Filling the water tank of the steam cooker with water; - Draining water from the water tank via an inlet valve into a water supply system of the steam cooker; - Returning used water from the water supply system back into the water tank via a non-return valve; and - Transferring the used water via a backflow barrier to a tank volume of the water tank, so that this used water is prevented from flowing back to the backflow valve by the backflow barrier.

[0028] The method according to the further aspect of the invention is carried out by the steam cooking appliance according to the invention, so that the method has all the advantages mentioned for the steam cooking appliance.

[0029] In particular, the method according to the invention allows for a reliable return flow of used water back into the water tank and out of the water supply system. The backflow barrier can function like a riser pipe and thus form a reliable barrier to protect the backflow valve from water accidentally flowing back into the water supply system.

[0030] The process steps are preferably carried out in the specified order. The method according to the invention describes a water cycle within a cooking process. First, water is filled into the water tank and then introduced into the water supply system of the steam cooker via the inlet valve. The water used for the cooking process is then returned to the water tank via the check valve and retained there by the check valve. Finally, the used water is emptied from the water tank so that fresh water can be added for a new cooking process. This ensures that used water is always reliably removed from the water supply system.

[0031] In an advantageous embodiment of the method according to the invention, the water tank is filled to a predetermined fill level, wherein the barrier height of the backflow barrier is higher than the predetermined fill level of the water tank in order to prevent the backflow of used water to the backflow valve. This advantageously prevents water from accidentally splashing over or the like, causing used water to flow back to the backflow valve.

[0032] In a particularly preferred embodiment of the method according to the invention, the water flow is controlled by a pump unit of the water flow system. In this embodiment, the water flow from and into the water tank can be carried out particularly reliably and easily. Preferably, the pump unit is controlled by pressure in order to open or close a corresponding valve.

[0033] An embodiment of the invention is shown schematically in the drawings and is described in more detail below. The drawings show... Fig. 1 a perspective view of an embodiment of a steam cooking appliance according to the invention; Fig. 2 a perspective view of a water tank in a tank view of the embodiment of the steam cooking appliance according to the invention; Fig. 3 a perspective view of the underside of the water tank of the embodiment of the steam cooking appliance according to the invention; Fig. 4 a perspective view of a tank volume within the water tank of the embodiment of the steam cooking appliance according to the invention; Fig. 5 a lateral sectional view of the water tank of the embodiment of the steam cooking appliance according to the invention; Fig. 6 a lateral sectional view of the water tank inserted into the tank housing of the exemplary embodiment of the steam cooking appliance according to the invention; and Fig. 7 a flowchart of an embodiment of a method according to a further aspect of the invention.

[0034] Fig. Figure 1 shows a perspective view of an embodiment of a steam cooking appliance 100 according to the invention.

[0035] The steam cooker 100 is in this case a steam cooker drawer 102, with a unit body 110, a steam cooker area 120 and a water tank 130.

[0036] The appliance body 110 surrounds an interior 112 of the steam cooker 100. The steam cooker drawer 102 can be moved like a drawer via a rail system 104 in a retracted position or in the position shown in the original text. Fig. The extended state shown in section 1 is present.

[0037] The steam cooking compartment 120 is designed to be closable within the interior 112. The steam cooking compartment 120 is surrounded by walls 122 of the steam cooking appliance 100, which are intended to prevent steam from escaping. These walls are made, for example, of glass or plastic.

[0038] The water tank 130 is located laterally to the steam cooking area 120 and is housed in a tank receptacle 114 of the appliance body 110. The tank receptacle 114 at least partially surrounds the water tank 130, ensuring its stability when in use. The tank receptacle 114 forms the receiving area 115 of the appliance body 110 for the water tank 130. The water tank 130 comprises a tank volume 132, which is filled with water 134. The water tank is connected to the steam cooking area 120 via a water supply system (not shown) of the steam cooking appliance 100. The water tank 130 includes a removable lid 140 for access to the tank volume 132.

[0039] Fig. Figure 2 shows a perspective view of a water tank 130 in a tank mount 114 of the embodiment of the steam cooking appliance 100 according to the invention.

[0040] Out of Fig. 2. The detailed structure of the water tank 130 results from Fig. 1. Thus, in Fig. 2. It can be seen that the water tank 130 has a removable lid 140 with at least one opening 142 for emptying and / or filling the water tank 130. A central opening 142 is essentially rectangular, while a second lateral opening 144 is provided for emptying the water tank 130 when the lid 140 is closed.

[0041] Furthermore, in Fig. Figure 2 shows that the removable lid 140 comprises two opposing handles 146, 146' for removing the water tank 130 from the device body 110.

[0042] Finally, the water tank 130 also has a level indicator 136, which is made of a transparent material, such as a transparent plastic, and through which it is possible to see how full the water tank 130 is while the water tank 130 is arranged in the tank holder 114.

[0043] Fig. Figure 3 shows a perspective view of the underside of the water tank 130 of the embodiment of the steam cooking appliance 100 according to the invention.

[0044] The perspective presented in Fig. Figure 3 shows that the water tank 130 has an inlet valve 150 for draining water from the water tank 130 into the water supply system and a check valve 152 for returning used water from the water supply system back into the water tank 130.

[0045] In the illustrated embodiment, both the inlet valve 150 and the check valve 152 are designed as non-return valves, wherein a corresponding pressure, such as overpressure and / or underpressure, is provided to open such a non-return valve, for example via a pump unit (not shown) of the water supply system of the steam cooker 100.

[0046] The non-return valve 152 and the inlet valve 150 form part of a plug connection 160 for the detachable insertion of the water tank 130 into the device body 110. The two valves 150 and 152 are positively inserted into a corresponding receptacle in the device body 110, as is the case, for example, in the context of Fig. 6 is shown.

[0047] Alternatively or additionally to the two valves 150, 152 on the underside of the water tank 130, the plug connection 160 can also be provided via another plug area, such as a tank edge 156. This tank edge 156 can lead to greater stability of the water tank 130 within the tank housing of the device body.

[0048] Fig. Figure 4 shows a perspective view of a tank volume 132 within the water tank 130 of the embodiment of the steam cooking appliance 100 according to the invention.

[0049] Shown here is a backflow barrier 170 according to the invention, which is surrounded by the in Fig. Figure 3 shows a non-return valve 152, which delineates an area around the non-return valve 152 from the remaining tank volume 132 of the water tank 130. This ensures that used water entering the water tank 130 via the non-return valve 152 is first routed through the non-return barrier 170 before the non-return barrier 170 prevents this water from flowing back to the non-return valve 152.

[0050] The backflow barrier 152 has a substantially rectangular cross-section with a rounded corner. The backflow barrier 152 is tubular in shape, resembling a riser pipe, surrounding the backflow valve 152, which is located at the bottom of the water tank 130. An opening in this riser pipe is formed at a barrier height H of the backflow barrier 170. A fill level F, to which the water tank 130 is filled with water, is particularly preferably significantly lower than the barrier height H, for example, at least 0.5 cm lower, in particular at least 0.75 cm lower, and most preferably at least 1 cm lower than the barrier height H.

[0051] The backflow barrier 170 is at least partially formed by a tank side wall 135 of the water tank 130 and by a cross member 137 of the water tank 130, the cross member 137 connecting two opposite sides of the water tank 130. This allows the water tank 130 with the backflow barrier 170 according to the invention to be manufactured particularly easily in one piece by a pressure or casting process, as described in [reference to relevant document]. Fig. 4 will be provided as shown.

[0052] Fig. 4 additionally shows recordings for the in Fig. The two opposing handles shown are movable and attached to the 130-liter water tank. The one in Fig. Four removable lids (not shown) are additionally attached to the water tank 130 via a corresponding snap-fit ​​connection. The central opening of the removable lid for filling the water tank 130 with water is located between the two opposing handles and thus next to the area of ​​the backflow barrier 170. This prevents water from flowing directly into the backflow barrier 170 when filling the tank through the central opening.

[0053] In the illustrated embodiment, two cross braces 137, 137' are provided within the tank volume 132 of the water tank 130 to make the water tank 130 robust against external forces, even during regular use. In particular, the present arrangement of the cross braces 137, 137' reliably prevents deflection between two opposing side walls of the water tank 130. Furthermore, each of the two cross braces 137, 137' has an opening to allow the tank volume 132, up to the area of ​​the backflow barrier 170, to be used as a single tank volume, which can be introduced into the water supply system of the steam cooker 100 via the inlet valve 150.

[0054] Fig. Figure 5 shows a side sectional view of the water tank 130 of the embodiment of the steam cooking appliance 100 according to the invention.

[0055] The in Fig. The arrow shown in Figure 5 indicates the flow direction for used water received from the check valve 152, which flows back into the water tank 130 via the check barrier 170. A gap between the removable cover 140 and the check barrier 170 ensures an unimpeded flow of the water received from the check valve 170 if the check barrier 170 is breached, similar to a riser pipe. Provided that the water level in the water tank 130 is below the barrier height H, this water cannot flow back into the water supply system through the check valve 152 after breaching the check barrier 170.

[0056] The inlet valve 150 is in Fig. 5 is also shown and is preferably permanently closed after the used water has been returned via the backflow barrier 170 to the water tank 130.

[0057] Fig. Figure 6 shows a lateral sectional view of the water tank 130 inserted into the tank receptacle 114 of the exemplary embodiment of the steam cooking appliance 100 according to the invention.

[0058] Due to the same cutting plane as in Fig. 5. The representation differs in Fig. 6 only by the fact that the water supply system 180 is indicated by connections on the inlet valve 150 and on the return valve 152. In addition, a structure of the base body 110 of the steam cooker 100 surrounding the water tank 130 is shown, which forms part of the tank receptacle 114.

[0059] It follows directly from what has been written above that the following is in the Fig. The embodiments shown in Figures 1 to 6 merely illustrate one exemplary design of the steam cooker 100 according to the invention. Alternatively or additionally, further features of the steam cooker can be added or modified. In particular, the structure of the backflow barrier 170 and / or other features of the water tank 130 can be provided differently for a steam cooker according to the invention, as long as the backflow barrier 130 prevents backflow into the backflow valve 152 according to the invention. Furthermore, instead of the steam cooker drawer shown, other steam cookers can also be designed according to the invention, such as a classic steam cooker and / or a Dialog cooker.

[0060] Fig. Figure 7 shows a flowchart of an embodiment of a method 700 according to a further aspect of the invention.

[0061] Method 700 is designed for operating a steam cooking appliance, in particular a steam cooking drawer. Method 700 comprises the steps described below.

[0062] The first step 710 involves filling the water tank of the steam cooker with water.

[0063] A subsequent step 720 involves draining water from the water tank via an inlet valve into a water supply system of the steam cooker.

[0064] A next step 730 involves returning used water from the water supply system back into the water tank via a non-return valve.

[0065] A final step 740 includes transferring the used water over a backflow barrier to a tank volume of the water tank, so that this used water is prevented by the backflow barrier from flowing back to the backflow valve.

[0066] Steps 710, 720, 730, and 740 of the inventive method 700 are preferably carried out in the specified order. The sequence of these steps describes a water cycle used for the steam cooking process within the steam cooker 100. First, the water tank is filled with water, then the water is introduced into the water supply system, and after use, it is returned to the water tank as used water and retained behind the backflow barrier. Against this background, the steps of the method are carried out during a steam cooking process.

[0067] Accordingly, the steps according to the invention are performed for different lengths of time. Step 710 is preferably performed manually, and the subsequent steps are performed manually, semi-automatically, and / or automatically.

[0068] In principle, it follows from the above that the inventive method 700 can be supplemented by one or more steps according to the embodiments of the invention described above. In particular, in an advantageous embodiment, the filling of the water tank in step 710 can take place up to a predetermined fill level of the water tank, wherein the barrier height of the backflow barrier is higher than the predetermined fill level of the water tank in order to prevent the backflow of the used water to the backflow valve.

[0069] Water flow is preferably controlled by a pump unit of the water flow system. This allows steps 720 and / or 730 to be executed by the pump unit. Reference symbol list 100 steam cooker 102 Steam cooking drawer 104 rail system 110 device bodies 112 Interior 114 Tank mounting 115 Recording area 120 steam cooking area 122 wall 130 water tank 132 tank volume 134 Water 135 Tank side wall 137 Cross brace 136 Level indicator 140 removable lids 142 central opening 144 side opening 146, 146` handle 150 Inlet valve 152 Non-return valve 156 Tank edge 160 connector 170 Backflow barrier 180 Water supply system 700 procedures 710, 720, 730, 740 Steps of the procedure H Barrier height F Fill level QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2007 048 200 A1

[0003] EP 4293285 A1

[0004]

Claims

[1] Steam cooking appliance (100), in particular steam cooking drawer (102), with - a device body (110) that surrounds an interior (112) of the steam cooker (100), - a steam cooking area (120) which is designed to be closable in the interior (112), - a water tank (130) with a tank volume (132) for receiving water (134), which is arranged and configured to be connectable to the steam cooking area (120) of the steam cooking appliance (100) via a water supply system (180) and to be removable within a receiving area (115) of the appliance body (110), wherein the water tank (130) has an inlet valve (150) for discharging the water (134) from the water tank (130) into the water supply system (180) and a check valve (152) for returning used water (134) from the water supply system (180) back into the water tank (130), and wherein the check valve (152) is surrounded by a check barrier (170) through which the supplied used water (134) can be transferred into the tank volume (132), so that this Used water (134) is prevented from flowing back to the non-return valve (152) by the non-return barrier (170). [2] Steam cooker (100) according to claim 1, wherein a barrier height (H) of the backflow barrier (170) is higher than a predetermined fill level (F) of the water tank (130) to prevent the backflow of the used water (143) to the backflow valve (152). [3] Steam cooker (100) according to claim 1 or 2, wherein the backflow barrier (170) has a tubular shape around the backflow valve (152). [4] Steam cooker (100) according to claim 3, wherein the backflow barrier (170) is open in a direction towards the top of the water tank (130). [5] Steam cooking appliance (100) according to at least one of the preceding claims, wherein the inlet valve (150) and / or the return valve (152) are formed on an underside of the water tank (130). [6] Steam cooking appliance (100) according to at least one of the preceding claims, wherein the inlet valve (150) and / or the return valve (152) are designed as a check valve. [7] Steam cooking appliance (100) according to at least one of the preceding claims, wherein at least one side wall of the backflow barrier (170) is formed by a tank side wall (135) of the water tank (130). [8] Steam cooking appliance (100) according to at least one of the preceding claims, wherein at least one side wall of the backflow barrier (170) is formed by a cross member (137) of the water tank (130), wherein the cross member (137) connects two opposite sides of the water tank (130). [9] Steam cooking appliance (100) according to at least one of the preceding claims, wherein the backflow barrier (170) is designed as a common component with the other side walls of the water tank (130). [10] Steam cooker (100) according to at least one of the preceding claims, wherein the non-return valve (152) and / or the inlet valve (150) form part of a plug connection (160) for detachably inserting the water tank (130) into the appliance body (110). [11] Steam cooking appliance (100) according to at least one of the preceding claims, wherein the water supply system (180) has a pump unit configured to open and close the inlet valve (150) and / or the return valve (152) by means of a corresponding overpressure or underpressure. [12] Steam cooker (100) according to at least one of the preceding claims, wherein the water tank (130) has a removable lid (140) with at least one opening (142) for emptying and / or filling the water tank (130), and wherein the at least one opening (142) is provided outside of an area of ​​the backflow barrier (170) in order to avoid filling the backflow barrier (170).

Images