DE102021201943A1 - Household cooking appliance with steam treatment drawer - Google Patents

Abstract

A household cooking appliance (1) has a stationary oven chamber (2) that can be closed with an oven door (3), a steam treatment drawer (5) arranged separately therefrom and an evaporator (12, 13) for generating steam (D), the steam treatment drawer (5) has a steamer trough (20a) with a loading opening (20a) on the top, which can be closed by means of a cover (28), the steamer trough (20a) and the cover (28) forming a steam treatment space (29) to which steam can be applied. The invention can be applied particularly advantageously to compact cooking appliances.

Description

The invention relates to a household cooking appliance with an oven chamber, a steam treatment chamber arranged separately therefrom and an evaporator for generating steam, the steam generated by the evaporator being able to be applied to the steam treatment chamber. The invention can be applied particularly advantageously to compact cooking appliances.

There are known double ovens with two separate stationary oven chambers, each of which can be closed with a front oven door and can be heated by means of resistance heaters. One of the furnace rooms can also be used as a warming compartment.

Also known are double ovens with two separate oven chambers that can be heated by means of bottom and top heat resistance heaters. One of the two furnace chambers is designed as a drawer.

Also known are household cooking appliances with a stationary oven space that can be closed by a front oven door and a stationary steam treatment space that is arranged separately from it and can be closed by its own front oven door.

Also known are household cooking appliances with an oven in which a cooking chamber divider can be used to thermally separate the oven chamber into two sub-chambers. The two sub-rooms can be heated separately. A cooking utensil consisting of a pot and a lid can be pushed into one of the partial spaces, with the cooking utensil having a steam connection for connection to an evaporator present outside the oven space.

It is the object of the present invention to at least partially overcome the disadvantages of the prior art and, in particular, to provide a particularly user-friendly possibility of steam-treating items to be treated.

This object is solved according to the features of the independent claims. Preferred embodiments can be found in particular in the dependent claims.

The object is achieved by a household cooking appliance, having a stationary oven chamber that can be closed with an oven door, a steam treatment drawer arranged separately therefrom and an evaporator for generating steam, the steam treatment drawer having a steam treatment chamber that can be subjected to steam with a loading opening on the top that is opened by means of a Lid can be closed.

This household cooking appliance has the advantage that the oven compartment and the steam treatment drawer can be opened, loaded and operated independently of one another, so that, for example, an ongoing steam treatment process in the steam treatment drawer is not affected by opening the oven door. In addition, the items to be treated which have been steam-treated in the steam-treatment drawer can be removed particularly easily. The load can be, for example, food to be cooked, such as food or meals, but is not limited to this.

Another advantage is that the steam treatment drawer is particularly easy to clean.

Another advantage is that the household cooking appliance can be designed to be particularly compact, in particular so compact that it fits into a built-in niche of 60 cm x 60 cm (built-in height x built-in width).

The household cooking appliance can also be referred to as a "multi-cavity" cooking appliance, since the oven chamber and the steam treatment drawer are housed in a common housing.

One or more energy supply devices for supplying energy for the heat treatment of material to be treated, for example one or more heat radiators and/or a microwave generator, are assigned to the furnace chamber (the wall of which can also be referred to as a “muffle”). The oven space can therefore be regarded in particular as a component of a conventional oven and/or microwave device. In this sense, the household cooking appliance can also be described as a combination cooking appliance with an oven (oven and/or microwave oven) and a steam treatment drawer arranged separately from it. A heat radiator can include at least one resistance heater (e.g. bottom heat, top heat, grill and/or hot air heater, e.g. electric resistance tubular heater) and/or at least one infrared heater.

It is a further development that the furnace space or the furnace is capable of pyrolysis.

The fact that the furnace chamber is stationary means in particular that it cannot be pulled out like a drawer, but is arranged in a fixed position in the device.

In particular, the steam treatment drawer is frontally out of the domestic cooking appliance mobile, eg by means of a handle and/or an extension mechanism, eg manually, motor-assisted or fully motor-driven, eg a push-to-open mechanism.

The fact that the steam treatment drawer is arranged separately from the oven chamber or oven includes, in particular, that it cannot be closed off by a common oven door with the oven chamber or is not arranged behind it when the oven door is closed.

The evaporator generates steam that can be introduced into the steam treatment room. In particular, a steam outlet opening of the evaporator is connected to the damper pan in terms of steam technology, e.g. via a steam duct ("steam inlet duct"), which in particular can be firmly connected to the damper pan or also directly.

A steam outlet duct can be connected to the steamer tray, through which steam in the steam treatment chamber can be released, e.g. into a steam removal unit, which forwards the steam, for example, to a vapor extractor of the household cooking appliance, via which vapors from the oven chamber are also drawn off. Alternatively, the vapor can be routed back into the evaporator where it is condensed, which advantageously reduces water consumption.

In particular, the evaporator can be removed from the steam treatment drawer on the user side, which makes it easier to clean, in particular decalcify.

It is an advantageous development for a compact structure that the evaporator has a steam generation unit and a water tank as components. It is an advantageous development for easy emptying and cleaning, in particular decalcification, that the steam generation unit and/or the water tank are designed to be removable individually and/or together from the evaporator receiving area. It is particularly advantageous if the water tank can be inserted into and removed from a receiving recess on the upper side of the steam generating unit by the user. Alternatively, the water tank is arranged and can be handled separately from the steam generation unit.

The steam generating unit is set up to boil water supplied from the water tank and thereby generate steam. For this purpose, the steam generating unit has at least one heating element—advantageously arranged on the bottom side. In a further development, the at least one heating element is an electrically operated heating element.

It is a particularly advantageous development for removing the steam generation unit that the heating element can be heated, for example, by thermal radiation, contact heat or induction. In this case, the heating element is not operated directly electrically, but is (indirectly) heated by a heating unit such as a resistance heater or induction coil that is permanently installed in the steam treatment drawer.

The water tank is intended to refill water into the steam generating unit. There may be a valve between the steam generating unit and the water tank to regulate the flow of water.

In a further development, the evaporator (front view) is arranged in front of the muffler pan, e.g. in a common evaporator receiving area, which makes it easier to access.

In the closed state, the lid can close the loading opening at least largely in a steam-tight manner due to its weight, if necessary via a seal, and advantageously keeps the steam and condensate (steam-tight) within the steam treatment chamber. As an alternative or in addition, the cover on the steam treatment drawer can be arranged in a lockable manner, which enables a particularly reliable closure of the charging opening. For example, it can be slid open or unfolded, for example manually and/or by or with the aid of a mechanism.

In one embodiment, the cover is an independent or separate component that can be placed on a pan that delimits the steam treatment chamber (hereinafter referred to as “steamer pan”) and is held in a displaceable manner on the steam treatment drawer, in particular on a support frame thereof. This makes it particularly easy to clean the cover. Alternatively, the lid can be integrated into the steam treatment drawer.

In a further development, the cover is a transparent glass cover or has at least one transparent glass pane, which has the advantage that steam-treated items to be treated can be viewed by a user when the drawer is pulled out and the cover is closed, e.g. to determine the progress of the treatment. Advantageously, the steam treatment space does not have to be open, which improves the treatment quality and makes it easier to control a steam treatment process.

It is a further development that the steam treatment drawer and the oven compartment extend over the entire width of the household cooking appliance, which can also be expressed in such a way that they are each arranged horizontally.

In a further development, the steam treatment drawer is arranged below the oven chamber or oven, which makes it easier to load the steam treatment chamber and to view and remove the items to be treated. In principle, however, the steam treatment drawer can also be arranged above the furnace space.

It is a configuration that the evaporator is arranged in the steam treatment drawer. This enables a particularly compact design and simple manufacture. However, the evaporator may alternatively be located outside of the steam treatment drawer. In particular, a steam outlet of the evaporator can be steam-connected to the steam treatment chamber, for example via a steam coupling (e.g. a steam-conducting plug-in coupling).

In one embodiment, the steamer pan has at least one steam inlet opening that can be connected to the evaporator and can be removed from the steam treatment drawer, in particular from a support frame thereof, and inserted into the steam treatment drawer, in particular from or upwards. In this way, the advantage is achieved that all parts of the steam treatment chamber that come into contact with steam and condensate (namely the damper pan and the cover) can be easily removed for cleaning after a steam treatment process. Annoying wiping out as with a stationary steam treatment room is no longer necessary.

The damper tray can have handles (e.g. handle shells) for easy handling. This configuration is to be understood in particular in such a way that the steamer trough itself does not represent a cooking utensil, but the items to be treated are placed in the damper trough or the treatment chamber, in particular with cooking utensil and/or resting on special inserts. The damper trough can also accommodate inserts onto which the item to be treated can be placed. If the evaporator is a component of the vape treatment drawer, it remains within it and is not part of the evaporator pan.

In one embodiment, the household cooking appliance has a common appliance control which is set up to operate both the oven or oven chamber and the steam treatment drawer. This provides a particularly compact, inexpensive and user-friendly operation of the multi-cavity cooking appliance. Alternatively, the steam treatment drawer can have a stand-alone device control.

In one embodiment, the device control is set up to schedule or coordinate treatment processes taking place in the oven chamber and in the steam treatment drawer (e.g. roast pork in the oven and chicken drumsticks with steamed vegetables in the steam treatment drawer). This advantageously facilitates the preparation of menus or menus. In particular, the device control can coordinate the treatment processes with one another in terms of time in such a way that they are completed at the same point in time.

In one configuration, the device control is set up to coordinate energy inputs into the oven chamber and into the steam treatment drawer.

Such energy management achieves the advantage that the furnace chamber and the steam treatment drawer can be operated at high power when treatment processes are taking place simultaneously, without the energy supply having to be throttled because predetermined maximum current loads have been reached. This also advantageously enables the effective use of a common power connection for the oven cavity and the steam treatment drawer, for example a common power connection of 16 A. Consequently, manufacturing and operating costs can also be reduced. In one example, the oven chamber can be heated by cycled radiant heaters and the use of electricity in the steam treatment drawer can be limited by the device control to off times for the radiant heaters. As a result, the oven chamber or baking oven can be operated with maximum current level without the steam treatment process being adversely affected. Another advantage is that the exhaust air control of the furnace chamber and the steam treatment drawer can also be coordinated.

It is an embodiment that there is a control panel for operating both the oven and the steam treatment drawer, which is integrated into the oven door, for example. This facilitates a compact structure with easy operability of both devices (oven and steam treatment drawer). The control panel can be viewed as a user interface of the device control and thus as part of the device control. Alternatively or additionally, the steam treatment drawer can have its own control panel for its operation, especially if it also has its own device control.

In a further development, the device control is integrated into the oven door as a whole (eg with the control panel and associated electronics of the device control), which results in a particularly compact design.

Alternatively or additionally, the household cooking appliance can be remotely controlled or remotely operated, e.g. via a user terminal, in particular a mobile user terminal such as a smartphone, tablet, etc., which is set up accordingly for controlling and/or monitoring the household cooking appliance, e.g. by running a corresponding application program. For this purpose, the household cooking appliance can be equipped with a wireless and/or wired data transmission interface, for example with a WLAN module, Bluetooth module, etc.

In one configuration, the household cooking appliance additionally has at least one heat radiator (e.g. a bottom and/or top heat resistance heater and/or infrared radiator) and/or a microwave generator, which is used to introduce energy for treating items to be treated into the steam treatment drawer are set up. A functionality of the steam treatment drawer can be increased in this way. In a further development, the at least one heat radiator is integrated into the steam treatment drawer. It is a further development that the microwave generator is integrated into the steam treatment drawer. It is an advantageous further development for a particularly compact and inexpensive construction that the microwave generator is arranged outside the steam treatment drawer, because this can then be used structurally particularly simply for introducing microwaves into the oven chamber.

In one configuration, the steam treatment drawer also has at least one weighing sensor or at least one scale for determining the weight of items to be treated placed in the steam treatment drawer. This achieves the advantage that a treatment process taking place in the steam treatment drawer, e.g. a cooking process, can be coordinated or adapted to the weight of the items to be treated, which increases the certainty of success. For example, depending on the measured weight, an amount of steam and/or treatment time can be adjusted.

In one configuration, the furnace chamber can be subjected to steam generated by the evaporator. Thus, advantageously, the furnace chamber is also equipped with a steam treatment functionality. If the evaporator is integrated into the steam treatment drawer, the steam generated by it can, for example, be routed into the furnace chamber via a steam coupling and a steam line system when the steam treatment drawer is pushed in.

• 1 zeigt als Schnittdarstellung in Seitenansicht eine Skizze eines Haushalts-Gargeräts mit einem Ofenraum und einer Dampfbehandlungsschublade;
• 2 zeigt in einer Ansicht von schräg oben einen Ausschnitt aus einer möglichen Variante des Haushalts-Gargeräts aus 1 mit ausgezogener Dampfbehandlungsschublade, die detaillierter in Explosionsdarstellung dargestellt ist;
• 3 zeigt in Ansicht von schräg oben eine Dämpferwanne der Dampfbehandlungsschublade aus 2;
• 4 zeigt als Schnittdarstellung in Seitenansicht die Dampfbehandlungsschublade aus 2 mit herausgenommener Dämpferwanne;
• 5 zeigt in Ansicht von schräg oben eine Explosionsdarstellung eines möglichen Verdampfers; und
• 6 in Ansicht von schräg oben einen Ausschnitt aus der Dampfbehandlungsschublade mit entnommener Dampferzeugungseinheit des Verdampfers.

The characteristics, features and advantages of this invention described above, and the manner in which they are achieved, will become clearer and more clearly understood in connection with the following schematic description of an exemplary embodiment, which will be explained in more detail in connection with the drawings.

• 1 shows a sectional side view sketch of a household cooking appliance with an oven compartment and a steam treatment drawer;
• 2 shows a section of a possible variant of the household cooking appliance in a view obliquely from above 1 with the steam treatment drawer extended, shown in more detail in an exploded view;
• 3 shows a steamer pan of the steam treatment drawer in an oblique view from above 2 ;
• 4 shows the steam treatment drawer as a sectional side view 2 with removed damper pan;
• 5 shows an exploded view of a possible evaporator in an oblique view from above; and
• 6 in an oblique view from above, a section of the steam treatment drawer with the steam generation unit of the evaporator removed.

1 shows a sectional side view of a sketch of a multi-cavity household cooking appliance 1 with a stationary oven chamber 2 of an oven whose front loading opening can be closed by means of a pivoting oven door 3, as indicated by the curved double arrow. Inside a housing 4 of the household cooking appliance 1 below the oven chamber 2 or oven there is a steam treatment drawer 5 which is arranged separately from the oven chamber 2 and can be moved in and out horizontally with manual and/or mechanical support, as indicated by the straight double arrow. The steam treatment drawer 5 is mounted in a drawer housing 48 attached to the housing 4 or integrated into the housing 4 so that it can be displaced horizontally, for example via a telescopic extension or rails. The steam treatment drawer 5 has a lower height than the oven compartment 2 and is arranged below the oven compartment 2 .

In the oven door 3 there is a common appliance control 6 including a control panel for the oven compartment 2 or for an oven having the oven compartment 2 and the steam treatment drawer 5. The appliance control 6 can be used to control the oven compartment 2 and the steam treatment drawer 5 individually, so that items to be treated, eg items to be cooked such as food, dishes, etc. can be prepared independently of one another. The furnace chamber 2 can be heated by means of energy supply devices in the form of a top heating element 7 shown as an example and a bottom heating element 8, in particular by clocking the respective power supply. The heaters 7 and 8 are actuated by the device control 6. The device control 6 is also set up in particular to coordinate the treatment processes taking place in the oven chamber 2 and in the steam treatment drawer 5, in particular the end times of the treatment processes, energy inputs and/or an exhaust air control.

The household cooking appliance 1 is in particular so compact that it fits into a built-in niche of 60 cm x 60 cm (built-in height x built-in width).

Now also referring to 2 the steam treatment drawer 5 has an evaporator receiving area 11 which is arranged behind a front cover plate 10 and in which there is a modular evaporator 12, 13, comprising a steam generation unit 12 and a water tank 13 connected thereto. The steam generating unit 12 and the water tank 13 can be removed individually or together from the evaporator receiving area 11 by the user, or alternatively are permanently installed therein. The water tank 13 can be covered on the top by a removable tank cap 14 .

When viewed from the front, behind the evaporator receiving area 11 is a damper tray insertion area 15. The evaporator receiving area 11 and the damper tray insertion area 15 are areas of a horizontally extendable support frame 30 arranged one behind the other.

The damper pan insertion area 15 has the shape of a border with lateral cheeks 16, a front wall 17 and a rear wall 18. At least the cheeks 16 are designed as hollow profiles - here with a rectangular cross-section - which makes them particularly light and allow electrical lines (not shown) to be passed through in a protected manner, e.g. electrical lines for the power supply of heating elements for the steam generation unit 12, possibly a pump and possibly signal lines, e.g. for connection to sensors of the evaporator 12, 13. In addition, rails (not shown), e.g. A further advantage of using hollow profiles is that they allow a broad top surface 19 to be formed for supporting a damper trough 20 in a simple manner. At least the cheeks 16 and the rear wall 18 have flat surfaces here, which supports their easy cleaning. The front wall 17 and the rear wall 18 can also be designed as hollow profiles or as simple walls without a hollow profile. Your tops can also serve as a support surface 19, but do not need it.

In the area bordered laterally by the cheeks 16 and the walls 17, 18, the damper pan insertion area 15 has no bottom. When inserted, a base 22 of the damper pan 20 then forms a flush partial area of the base of the steam treatment drawer 5 within the border 16 to 18. As a result, the damper pan 20 can be designed to be particularly deep and consequently large in volume. Furthermore, there is no bottom of the support frame 16, which advantageously results in a saving of material.

The damper trough 20 is embodied in the form of a trough or bowl, specifically here with a cuboid basic shape that is open at the top. On its upper side, the damper pan 20 has a peripherally closed flange or edge region 21 which is bent over laterally outwards and via which it can be placed on the support surface 19 from above. The damper pan 20 can therefore be inserted into the damper pan insertion area 15 from above. The upper opening of the steamer trough 20 forms a loading opening 20a for the use of items to be steamed, e.g. For this purpose, suitable inserts E can be used in the damper trough 20, onto which the items to be treated can be placed. The use of such inserts E makes it easier to load and remove food, especially when the steamer pan 20 is used.

In the area bordered laterally by the cheeks 16 and the walls 17, 18, the damper pan insertion area 15 has no bottom. When the damper trough 20 is inserted, its bottom 22 forms a flush part of the bottom of the steam treatment drawer 5 within the border 16 to 18. As a result, the damper trough 20 can be designed to be particularly deep and consequently large in volume. Furthermore, there is no bottom of the supporting frame 30, which advantageously results in a saving of material.

The damper pan 20 also has handles 23 that protrude at the side for easy handling which, when the damper pan 20 is in place, can be fitted into a respective recess in the lateral cheeks 16 that is open at the top in the form of respective depressions 24 .

The damper trough 20 also has a steam inlet duct 25 made of plastic, which is elongated laterally in a horizontal orientation and is attached to the front wall 17 and which, when the damper trough 20 is in the inserted state, forms a section of a steam connection with the steam generation unit 12 . The damper pan 20 also has a steam outlet channel 26 (see FIG 4 ) which connects to the rear wall 18 and which, when the damper pan 20 is inserted, has a steam-related connection to a steam removal unit 27 (see FIG 4 ) manufactures. The steam removal unit 27 is used at least to divert steam removed from the steamer tray 20 during a steam treatment process from the steam treatment drawer 5, for example to a vapor extractor of the household cooking appliance 1, via which vapors of the oven compartment 2 are also withdrawn.

1 also shows a cover 28 that can be placed on top of the edge area 21, preferably via a seal (not shown) in order to prevent or at least make it more difficult for steam to escape through gaps between the damper pan 20 and the cover 28. The damper trough 20 and the cover 28 form or delimit a steam treatment chamber 29 in which the material to be treated can be subjected to steam. The cover 28, which is advantageously a transparent glass cover or has at least one transparent glass pane, can be an independent component, can be slidably arranged on the support frame 30 as shown, or can be pivotally connected to the support frame 30, for example via rotary hinges.

3 shows the damper pan 20 in a view obliquely from above. The adapter-like steam inlet channel 25 is arranged on the front side 31 facing the front wall 17 below the edge area 21 . It is open on the underside and forms a coupling opening 25b there. It also has a rear steam inlet opening 25a, which opens into the damper trough 20 or the steam treatment chamber 29 and is slot-shaped here, through which steam D is introduced into the damper trough 20 during a steam treatment process.

The adapter-shaped steam outlet channel 26 (see 4 ) is arranged on the rear side 32 below the edge area 21. It also has a horizontally stretched basic shape and is open on the underside in the form of a coupling opening 26b (see Fig 4 ) educated. The steam outlet channel 26 can be shaped at least largely identical to the steam inlet channel 25 . It also has a front-side steam outlet opening 26a (not shown) that opens into the steamer trough 20 or the steam treatment chamber 29, here: slot-shaped, through which steam D is discharged from the steamer trough 20 during a steam treatment process and fed to the steam removal unit 27.

4 shows the steam treatment drawer 5 with the damper pan 20 removed as a sectional view through the evaporator 12 to 13 in a side view. The cover 28 is pushed backwards here and therefore releases the area 15 for inserting the damper pan.

When the damper pan 20 is inserted into the damper pan insertion area 15 from above, as indicated by the wide arrow, an edge of the downward-pointing coupling opening 25b of the steam inlet channel 25 is pushed onto or into a correspondingly shaped, upward-pointing, slit-shaped steam outlet opening 12a of the steam generation unit 12 attached or, as shown, inserted at the edge, possibly via a seal. As a result, when the damper pan 20 is inserted, a steam channel is created from the steam outlet opening 12a through the steam inlet channel 25 into the damper pan 20, through which steam D generated by the steam generating unit 12 is guided into the damper pan 20, as indicated by the left arrows. The vapor outlet opening 12a and the coupling opening 25b thus form a vapor-permeable vapor coupling in the plugged-in state.

When inserting the damper pan 20, the downwardly open coupling opening 26b of the steam outlet channel 26a is also placed on or in a correspondingly shaped open top of a receptacle 27a of the steam removal unit 27 or, as shown, inserted at the edge, possibly via a seal. The open top of the receptacle 27a is designed as a steam inlet opening 27b shaped to match the coupling opening 26b. As a result, when the damper pan 20 is inserted, a steam channel is created from the damper pan 20 through the steam outlet channel 26 into the steam removal unit 27, through which steam D that has flowed through the damper pan 20 and possibly contains vapor is conducted into the steam removal unit 27, as indicated by the arrows on the right. The coupling opening 26b and the vapor inlet opening 27b thus form a vapor-permeable vapor coupling when the damper pan 20 is inserted.

Kon located in the steam treatment room 29 after a steam treatment process densat can simply be poured out after the damper tray 20 has been removed, so that there is no need for time-consuming wiping or the like.

5 shows an exploded view of the evaporator 12 to 13 with the steam generation unit 12 and the water tank 13 that can be inserted on top therein in a view diagonally from above.

The water tank 13 can be made of transparent plastic and is therefore shown semi-transparent here. The tank cap 14 can be placed on the water tank 13 which is open at the top. The water tank 13 has a water outlet 40 that protrudes inwards from the bottom, in the form of a tube or a socket, for example, for letting water into the steam generation unit 12 . The water outlet 40 has a locking mechanism (not shown), which blocks the water outlet 40 when the water tank 13 is removed and releases it when the water tank 13 is inserted.

The steam generation unit 12 is present here, for example, in the form of a heatable evaporator shell 41 with a rectangular basic shape that is open at the top and an adapter plate 42 that can be placed on the open upper side of the evaporator shell 41 by the user. The adapter plate 42 thus serves as a cover for the evaporator shell 41 . The internal volume of the evaporator shell 41 corresponds at least to the filling volume of the water tank 13.

The adapter plate 42 has a receiving recess 45 with a water passage opening (not shown) for the user to insert the water tank 13 in a form-fitting manner and the steam outlet opening 12a, for example slotted, located behind the receiving recess 45 (in front view). In the bottom of the receiving recess 45, a connecting piece 46 or pipe (see FIG 5 ) be present, which slides into the receiving recess 45 in the water outlet 40 when the water tank 13 is used and opens the locking mechanism located therein (eg a spring-loaded non-return valve). When the locking mechanism is open, water can flow out of the water tank through the water outlet 40 and the socket 46 inserted therein into the evaporator shell 41 if a shut-off valve (not shown) of the evaporator 12, 13 is open at the same time, which is set up for this purpose to be optionally opened or closed by a water level in the evaporator shell 41, for example a valve (“float valve”), which is actuated by a float floating in the water in the evaporator shell 41. This makes it possible to also fill only a small amount of water into the evaporator shell 41 in a controlled manner, which is distributed over the large heatable base area of the evaporator shell 41 at a comparatively low fill level, so that particularly short reaction times and/or high amounts of steam can be achieved when steam is generated.

In one variant, the water tank 13 can be removed from the receiving recess 45 by means of at least one handle arranged on it (not shown) and/or by means of an automatic lifting mechanism (not shown).

At least one heating element is also assigned to the evaporator dish 41 (not shown). The evaporator shell 41 advantageously consists at least partially of metal or ceramic, while the adapter plate 42 advantageously consists of plastic.

The steam generation unit 12 can have a filter holder (not shown), which can be arranged above a nominal filling level of the evaporator shell 41 . The portafilter can thus be wetted by the steam in the steam generation unit 12 without being immersed in the water in the evaporator bowl 41 . As a result, the steam escaping from the steam outlet opening 12a can be flavored, for example, if there are corresponding flavorings such as containers with spices or herbs or the like in the portafilter.

6 shows a section of the steam treatment drawer 5 with the removed steam generation unit 12 of the evaporator 12 to 13 viewed from obliquely above. The water tank 13 is not shown and may have already been removed, for example.

As indicated by the broad arrow, when the damper pan 20 is removed, the steam generation unit 12 can be removed from a corresponding evaporator recess 47 in the support frame 30 on the user side, for example to the rear. The steam generation unit 12 can then be emptied by the user after removing the adapter plate 42 and, if necessary together with the adapter plate 42 and/or the water tank 13, can be cleaned, in particular decalcified, e.g. in a dishwasher.

At the bottom of the evaporator recess 47 there is a contact thermocouple (not shown) which, when the steam generation unit 12 is inserted, makes contact with its bottom and thereby measures the outside temperature of this bottom. If the heating element is embedded in the floor, its temperature is measured. The sensor measurement values can be fed to a control device for controlling the evaporator 12, 13, for example for steam regulation (activation and deactivation of the at least one heating element) and for detecting a lack of water (eg running empty). The control device can be a component of the steam treatment drawer 5 or of the domestic cooking appliance 1 in general. The control device can in particular correspond to the device control 6 .

A steam treatment process can be carried out, for example, as follows: A user moves the steam treatment drawer 5 with all of its components forward from its retracted state to its extended state. The user then removes the water tank 13 from the receiving recess 45 of the adapter plate 42, fills it with water and puts it back into the receiving recess 45. In addition, the user opens the cover 28, which has been completely closed up to that point, by sliding it backwards far enough that the charging opening 20a is exposed. He then places e.g. The user now closes the lid 28 by sliding it forward into its closed position and then closes the steam treatment drawer 5 by moving it backwards into the drawer housing 48. Alternatively, the user moves the steam treatment drawer 5 backwards into the drawer housing 48 with the lid 28 still open, whereby the cover 28 is automatically brought into the closed position after it has struck the drawer housing 48 .

In addition, the user can select a specific steam treatment process via the control panel of the device control 6, e.g. by setting treatment parameters such as a process duration etc. and/or selecting a suitable automatic program. Once the parameters have been selected manually and/or automatically, the user can start the steam treatment program. If a weighing sensor (not shown) is assigned to the steamer pan 20 (e.g. by the steam treatment drawer 5 resting on it), the steam treatment program can be adjusted accordingly by the device control 6, e.g. in relation to the process duration.

If the steam treatment drawer 5 has, in addition to the evaporator 12, 13, further heat sources such as heat radiators, a microwave generator, etc. (not shown), further operating parameters can be entered by the user or automatically, e.g. a temperature in the treatment chamber 29, a microwave output, etc. The device control 6 can also adapt the steam treatment process or the automatic program in relation to these other operating parameters, e.g. the temperature in the treatment room, for example depending on the measured weight.

If treatment processes are running simultaneously in the oven chamber 2 and in the steam treatment drawer 5 and a user has specified a wish for a common end time for both treatment processes, the device control 6 can adjust the treatment processes accordingly, e.g. by delaying the start of one of the treatment processes, lengthening or shortening the Process time(s), for example by increasing the temperature in the furnace chamber 2 to accelerate the treatment process there, etc.

A steam treatment process can be carried out with the drawer 5 or support frame 30 retracted. However, it may additionally be possible to carry out a steam treatment process with the steam treatment drawer 5 extended. In a further development, steam generation by the evaporator can be made dependent on the cover 28 resting on the damper pan 20 in its closed position. This can be determined, for example, by contact switches or similar.

When the steam treatment drawer 5 is extended, the user can, for example, remove and fill the water tank 13 without having to open the steam treatment space 29 . This action is particularly advantageous if the steam generation process is not interrupted. A further advantage is that when the steam treatment drawer 5 or supporting frame 30 is extended, a user can view and assess the items to be steamed, in particular items to be cooked, through the transparent glass pane of the cover 28 .

After a steam treatment process, the user can extend the steam treatment drawer 5 (if this does not happen automatically), slide the cover 28 - in particular after at least extensive steam release through a gap opening - so far back that the steamer tray 20 is exposed. The user can now remove the inserts E with the items to be treated placed on them.

To clean the steam treatment drawer 5, the user can lift the lid 28 and wipe dry with the steam treatment drawer 5 extended and/or clean it, for example, in a sink or--if dishwasher-safe--in a dishwasher. The user can also remove the damper pan 20 and wipe it dry and/or, for example, in a sink or—if dishwasher safe—in a Clean dishwasher. Furthermore, the user can remove and empty the water tank 13 . In addition, the user can also remove the steam generating unit 12 and wipe it dry and/or clean it, for example, in a sink or--if it is dishwasher-safe--in a dishwasher, particularly when the damper pan 20 has been removed.

Of course, the present invention is not limited to the embodiment shown.

There can also be a steam supply line leading from the steam generating unit 12 into the furnace chamber 2, which can be selectively released or shut off, for example, by the device control 6. It is a further development that the steam supply line 16 can also be selectively released or shut off by the device control 6 . Alternatively, the steam—with or without material to be treated in the steam treatment drawer 5—can be guided from the evaporator 12 through the steamer trough 20 and further into the furnace space 2 . This results in the advantage that there is no need for a direct steam feed line from the evaporator 20 into the furnace space 2 past the steamer trough 20 .

In general, "a", "an" etc. can be understood as a singular or a plural number, in particular in the sense of "at least one" or "one or more" etc., as long as this is not explicitly excluded, e.g. by the expression "exactly a" etc.

A numerical specification can also include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

Reference List

1

household cooking appliance

2

oven room

3

oven door

4

Housing

5

steam treatment drawer

6

device control

7

Top heat radiator

8th

Bottom heat radiator

10

cover plate

11

Evaporator pickup area

12

steam generating unit

12a

steam outlet opening

13

water tank

14

gas cap

15

Damper tray application area

16

lateral cheek

17

front wall

18

back wall

19

bearing surface

20

damper pan

20a

loading opening

21

edge area

22

floor

23

Handle

24

deepening

25

steam inlet channel

25a

steam inlet port

25b

clutch opening

26

steam outlet channel

26a

steam vent

26b

clutch opening

27

vapor removal unit

27a

recording

27b

steam inlet opening

28

lid

29

steam treatment room

30

supporting frame

31

Front of the damper pan

32

rear of the damper pan

40

water outlet

41

evaporator dish

42

adapter plate

43

Edge area of the adapter plate

44

Top edge of the evaporator dish

45

recording deepening

46

Support

47

evaporator recess

48

drawer housing

E

mission

D

steam

Claims (12)

Household cooking appliance (1), having a stationary oven that can be closed with an oven door (3). space (2), a steam treatment drawer (5) arranged separately therefrom and an evaporator (12, 13) for generating steam (D), the steam treatment drawer (5) having a damper pan (20a) with a charging opening (20a) on the top side which can be closed by means of a cover (28), the steamer trough (20a) and the cover (28) forming a steam treatment chamber (29) which can be subjected to the steam. Household cooking appliance (1) after claim 1 , wherein the steam treatment drawer (5) is arranged below the oven space (2). Household cooking appliance (1) according to one of the preceding claims, wherein the cover (28) is a separate component which can be placed on the steamer tray (20a) and is slidably held on the steam treatment drawer (5). Domestic cooking appliance (1) according to one of the preceding claims, wherein the evaporator (12, 13) is arranged in the steam treatment drawer (5). Domestic cooking appliance (1) according to one of the preceding claims, wherein the damper tray (20) has at least one steam inlet opening (25a) which can be connected to the evaporator (12, 13) and can be removed from the steam treatment drawer (5). Domestic cooking appliance (1) according to one of the preceding claims, wherein the domestic cooking appliance (1) has a common appliance control (6) which is set up to operate both the oven chamber (2) and the steam treatment drawer (5). Household cooking appliance (1) after claim 6 , wherein the device control (6) is set up to chronologically coordinate treatment processes taking place in the oven chamber (2) and in the steam treatment drawer (5). Household cooking appliance (1) according to one of Claims 6 until 7 , wherein the device control (6) is set up to coordinate energy inputs into the oven chamber (2) and into the steam treatment drawer (5). Domestic cooking appliance (1) according to one of the preceding claims, wherein at least one control panel for operating both the oven chamber (2) and the steam treatment drawer (5) is integrated into the oven door (3). Domestic cooking appliance (1) according to one of the preceding claims, wherein the domestic cooking appliance (1) additionally has at least one heat radiator and/or a microwave generator which are set up to introduce energy for treating items to be treated into the steam treatment drawer (5). Domestic cooking appliance (1) according to one of the preceding claims, wherein the steam treatment drawer (5) also has at least one weighing sensor for determining a weight of the items to be treated placed in the steam treatment drawer (5). Domestic cooking appliance (1) according to one of the preceding claims, in which the oven chamber (2) can be subjected to steam (D) generated by the evaporator (12, 13).

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