WO2022184423A1

WO2022184423A1 - Steam treatment drawer for a household cooking appliance

Info

Publication number: WO2022184423A1
Application number: PCT/EP2022/053725
Authority: WO
Inventors: Markus Helminger; Philipp Kleinlein; Christian Clauss; Ludovic Ball
Original assignee: BSH Hausgeräte GmbH
Priority date: 2021-03-01
Filing date: 2022-02-16
Publication date: 2022-09-09
Also published as: EP4302018A1; DE102021201946A1; CN117043516A

Abstract

The invention relates to a steam treatment drawer (5) for a household cooking appliance (1), comprising an extendable support frame (30) having an evaporator (12, 13) arranged therein and a steaming trough (20) which can be introduced from the top into the support frame (30) for receiving the treatment product to be steamed, wherein a steam inlet channel (25) is arranged on the steaming trough (20), which is designed in such a way that, when the steaming trough (20) is used, it couples in terms of guiding the steam to a steam outlet opening (12a) of the evaporator. A household cooking appliance (1) comprises at least one steam treatment drawer (5). The invention can be particularly advantageously applied to household cooking appliances having an oven and a steam treatment drawer disposed underneath.

Description

Steam treatment drawer for a household cooking appliance

The invention relates to a steam treatment device for a domestic cooking appliance, having a steamer trough for receiving items to be steamed, wherein a steam outlet opening of an evaporator is followed by a steam inlet duct, which leads to the steamer trough. The invention also relates to a household cooking appliance having at least one such steam treatment drawer. In particular, the invention can advantageously be applied to household cooking appliances with an oven and a steam treatment drawer arranged underneath.

Steam treatment vessels for use in a cooking chamber of an oven are known, which have a steamer trough for receiving the material to be steamed, which can be covered steam-tight on the upper side by means of a lid. Pipes welded to the steamer pan are known for the inlet and possibly also outlet of steam into the steam treatment chamber formed by the steamer pan and the lid.

Also known for the inlet and, if necessary, outlet of steam is to provide openings in the lid of the steam treatment vessel.

In the case of a hinged lid, it is also known to provide for the inlet and optionally also outlet of steam through the hinges of the steam treatment vessel.

A disadvantage of the known steam treatment vessels is that the user has to laboriously couple the inlet and/or outlet of the steam treatment vessel to the furnace in terms of steam technology.

It is the object of the present invention to at least partially overcome the disadvantages of the prior art.

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 steam treatment drawer for a household cooking appliance, having an extendable support frame with an evaporator arranged therein and a damper tray that can be replaced in the support frame from above for receiving items to be steamed, with a steam inlet channel being attached to the damper tray is designed in such a way that, when the damper pan is used, it is conductively coupled to a steam outlet opening of the evaporator in terms of steam technology.

This steam treatment drawer has the advantage that by inserting the removable steamer tray, a simple and safe steam connection can be established between the steamer tray and the evaporator without the user having to carry out any further actions. This is particularly user-friendly.

The support frame of the steamer drawer is adapted to be extended and retracted horizontally, e.g., opposite a drawer seat of the domestic cooking appliance. When the support frame is extended, the damper tray can be removed from the top. For this purpose, the damper trough can be used in particular in a damper trough insertion area of the support frame. It is an advantageous development for enabling a particularly large volume of the damper pan that the damper pan insertion area has no bottom in the area of the damper pan, so that the bottom of the damper pan forms the bottom of the damper drawer there

The open upper side of the damper trough, which serves as a loading opening, can be covered in a steam-tight manner to form a steam treatment chamber by means of a cover of the steam treatment drawer, if necessary via a seal. The cover can be a separate component or can be connected to the support frame. In the latter case, the cover can be pivoted or slidable against the support frame. The lid is made of glass, because it is particularly resistant to chemical and mechanical stress. In particular, the glass is transparent glass, which allows an insight into the steamer bowl even when the lid is closed.

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 user can insert the water tank into a recess on the top side of the steam generating unit and remove it therefrom. 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. The steam produced during boiling escapes through the steam outlet opening of the evaporator or the steam generation unit.

In one 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, e.g. by externally supplied thermal radiation and/or contact heat or induction. In the case of heating by thermal radiation and/or contact heat, the heating element is not operated directly electrically, but is (indirectly) heated by a heating unit such as a resistance heater that is permanently installed in the steam treatment drawer. In the case of inductive heating, at least one induction coil can be permanently installed in the steam treatment drawer.

The water tank is intended to refill water into the steam generating unit. A locking mechanism or a valve can be present between the steam generating unit and the water tank in order to regulate the water flow. It is a further development that the valve blocks the water outlet when the water tank is removed and releases it when the water tank is inserted. In a further development, the evaporator has a shut-off valve which is set up to open or close as required depending on the water level in the steam generation unit. Alternatively, a conveying device such as a pump for conveying water from the water water tank into the steam generation unit and optionally also to reclaim water from the steam generation unit into the water tank. Furthermore, a control unit for controlling the evaporator and possibly the conveying device can be accommodated.

In one development, the steam generation unit is in the form of a heatable evaporator shell with an open top and an adapter plate that can be placed on the open top of the evaporator shell by the user, the adapter plate has the steam outlet opening and a receiving recess with a water passage opening for the user to insert the water tank, and the Water tank have a water outlet for discharging water into the evaporator shell. In a further development, the evaporator shell has an internal volume with a rectangular basic shape, the adapter plate can be placed with its edge region on an upper edge of the evaporator shell, and the vapor outlet opening of the adapter plate is arranged next to its receiving recess. It is a further development that the internal volume of the evaporator shell corresponds to at least one filling volume of the water tank. In a further development, the steam generating unit has a filter holder which can be arranged in a vapor space delimited by the evaporator dish and the adapter plate above a nominal fill level of the evaporator dish. The portafilter can be wetted by the steam in the evaporator dish without immersing it in the water in the evaporator dish. As a result, the steam escaping from the steam outlet opening can be flavored, for example, if there are flavorings such as spices or similar in the filter holder.

The steam outlet opening can be formed, for example, in a wall of the steam generation unit, in particular an evaporator shell, or in a wall of a steam guide structure extending from the steam generation unit.

The steam inlet channel opens into the damper pan with a steam inlet opening.

The steam inlet duct and the damper pan are, in particular, separately manufactured components that have been married or connected to one another. Advantageously, this also enables cost-effective production of complex-shaped steam inlet ducts. Such a steam inlet duct can also be referred to as an adapter-type steam inlet duct or adapter. For example, an end cover on the damper pan side be connected to the damper pan in the area of the steam inlet duct in a non-positive, positive and/or material-locking manner, for example latched and/or glued to the damper pan. In a further development, the end area on the damper pan side is placed on an opening in a wall or a wall section of the damper pan. It is a further development that the end region on the damper pan is inserted, for example plugged, into an opening in a wall or a wall section of the damper pan.

It is a further development that the steam inlet duct consists of plastic, which also enables particularly complex shapes to be produced in a particularly inexpensive manner. The steam inlet duct can, for example, be an injection molded part. The damper pan as such is advantageously made of stainless steel.

The fact that the steam inlet duct is designed in such a way that, when the damper pan is used, it is conductively coupled to the steam outlet opening of the steam generation unit in terms of steam technology, includes in particular that steam from the steam outlet opening enters the steam inlet duct during a coupling, in particular through a corresponding opening ("coupling opening") of the steam inlet channel. A steam connection or line is thus established from the steam outlet opening of the steam generation unit through the steam inlet channel into the damper pan. When the damper tray is removed, the coupling is automatically disconnected again (i.e. without further action by the user).

In one embodiment, the steam outlet opening is an opening that is open at the top, and the steam inlet channel has a coupling opening that is open at the bottom, through which the steam can pass when the damper pan is in the inserted state. In this way, a mechanically particularly simple design and easy-to-clean vapor coupling is provided. In this configuration, when the damper tray is inserted, a border of the coupling opening of the steam inlet channel in particular makes contact with a border of the steam outlet opening of the steam generation unit, so that a closed contact surface is formed in the area where the borders meet, which prevents steam from escaping laterally. The contact is maintained by their weight.

In particular, a parasitic escape of steam through gaps between the borders of the steam outlet opening and the coupling opening of the steam inlet channel To prevent reliably, a seal (eg a sealing ring) can be present in the joint area, which can be attached to the steam generation unit or to the steam inlet duct.

In one embodiment, when the damper trough is used, the steam inlet channel is placed in a steam-tight manner with a flat or even border of its coupling opening on a flat border of the steam outlet opening, possibly via a seal. In this way, a mechanically particularly simple design and easy-to-clean steam clutch is provided.

In one embodiment, when the damper trough is used, a border of a coupling opening of the steam inlet channel is plugged into a border of the steam outlet opening of the steam generation unit in a steam-tight manner. This advantageously enables a particularly high level of vapor tightness. For example, one of the borderings can have a step-shaped cross-section and dip into the other border with its inner step.

One configuration is that a steam removal unit is arranged in the extendable support frame, a steam outlet channel connects to a steam outlet opening of the damper pan and the steam outlet channel is designed in such a way that when the damper pan is used it is conductively coupled to the steam removal unit, in particular to an associated steam inlet opening . As a result, a directed flow of steam through the steam treatment chamber can advantageously be generated during a steam treatment process, and a targeted exit of steam from the steamer trough and a defined disposal of the extracted steam are made possible.

The steam removal unit can be used in particular for removing or disposing of the extracted steam, for example leading to a fume hood or even being a fume hood itself. The steam removal unit can also be designed to clean the steam, eg to filter it. In a further development, the vapor removal unit can be removed from the support frame, for example for cleaning, changing the filter, etc. The steam outlet duct can be designed analogously to the steam inlet duct, for example in such a way that the adapter-like steam outlet duct has a downwardly open coupling opening through which the steam can enter a steam inlet opening of the steam removal unit when the damper pan is in place. The steam inlet opening can be open at the top, in particular analogously to the steam outlet opening of the steam generating unit, with the matching coupling opening of the steam outlet channel being able to be placed or inserted thereon. Like the steam inlet channel, the steam outlet channel can be a plastic part. It can be shaped identically or similarly to the steam inlet duct.

The steam inlet opening of the steam removal unit can, for example, be formed in a housing wall of the steam removal unit, which enables a particularly compact structure.

It is an embodiment that (in front view) the evaporator or the evaporator receiving area is or are arranged in front of the inserted damper pan and the vapor removal unit is arranged behind the inserted damper pan. In this way, easy accessibility of the evaporator can advantageously be achieved. In addition, the damper pan can be designed to be particularly large and easy to remove and insert.

In one configuration, a steam inlet opening of the steam inlet channel opening into the damper pan is arranged on a front wall (in a front view) of the damper pan and a steam outlet opening opening into the damper pan is arranged on a rear wall of the damper pan. This advantageously enables particularly short steam ducts between the steam generation unit and the damper pan and the damper pan and the steam removal unit, which in turn is particularly favorable and inexpensive in terms of energy. In this configuration, the steam inlet duct is arranged in particular between the steam generation unit and the damper pan. Also, the steam outlet duct, if any, is located between the steamer pan and the steam removal unit.

In one embodiment, the steam inlet opening and the steam outlet opening are integrated into respective side handles of the damper pan. This enables advantageously wise avoiding openings in the damper pan as such for the introduction or formation of the steam inlet opening and possibly the steam outlet opening. In this configuration, in particular, the steam inlet duct can run from the evaporator arranged at the front and further to the side of the damper pan to a handle. The vapor outlet duct can then extend from the other handle on the side of the muffler pan to the rear vapor evacuation unit.

The steam inlet opening and the steam outlet opening are therefore arranged in particular on opposite walls or wall sections of the damper pan.

It is an embodiment that the steam inlet opening and the steam outlet opening each have a horizontally aligned, elongated shape, e.g. in the form of a slit, a row of slits arranged one behind the other, a row of holes, etc. This achieves the advantage that steam can be drawn out over a wide area in which can enter and exit the damper pan, which enables a particularly uniform application of steam to the damper pan or a particularly evenly distributed stream of steam. In a further development, the horizontal length of the steam inlet opening and the steam outlet opening is at least 50% of the horizontal extent of the respectively associated wall, in particular at least 75%.

The object is also achieved by a household cooking appliance that has at least one steam treatment drawer as described above. The household cooking appliance can be designed analogously to the steam treatment drawer and has the same advantages.

In one embodiment, the domestic cooking appliance has a fume extractor and the steam removal unit is connected to the fume extractor on the steam outlet side in terms of steam when it is retracted. As a result, steam extracted from the damper pan can be safely discharged from the domestic cooking appliance, which is advantageous for the user.

It is a further development that the household cooking appliance has only at least one steam treatment drawer as the functional unit that treats the food. It is a further development that the household cooking appliance has at least one further functional unit of a different type for treating food with its own cooking chamber separate from the steam treatment drawer, for example an oven, in addition to the at least one steam treatment drawer. The oven can be, for example, an oven, a microwave oven or a combination thereof. This can also be referred to as a "multi-cavity" cooking appliance. In particular, the steam removal unit can be connected to the fume hood of the oven.

It is an embodiment that the steam treatment drawer is arranged below the further functional unit treating the food to be cooked, in particular the oven, since particularly good accessibility and easy handling of the steam treatment drawer is advantageously achieved in this way.

The properties, 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 of a sketch of a household cooking appliance with a steam treatment drawer;

FIG. 2 shows, in a view obliquely from above, a section of a possible variant of the domestic cooking appliance from FIG. 1 with the steam treatment drawer pulled out, which is shown in more detail in an exploded view;

FIG. 3 shows a damper trough of the steam treatment drawer from FIG. 2 in a view at an angle from above; FIG.

FIG. 4 shows a sectional side view of the steam treatment drawer from FIG. 2 with the damper pan removed;

5 shows an exploded representation of a possible evaporator in a view obliquely from above; and

6 shows a section of the steam treatment drawer with the steam generation unit of the evaporator removed in a view at an angle from above.

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 side io ge loading opening can be closed by means of a pivotable 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 retracted and extended horizontally with manual and/or mechanical support, as indicated by the straight double arrow implied. 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 have the items to be treated, e.g. items to be cooked such as groceries, meals, etc., prepared independently of one another. The furnace chamber 2 can be heated by means of energy supply devices in the form of an upper heating element 7 shown as an example and a lower heating element 8, in particular by clocking the respective power supply. The heaters 7 and 8 are controlled by the device control 6. The device control 6 is also set up in particular to coordinate the treatment processes taking place in the furnace 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 vote.

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).

Referring now also to Fig. 2, the steam treatment drawer 5 has an evaporator receiving area 11 arranged behind the cover plate 10, in which a modularly constructed steamer 12, 13 comprising a steam generating unit 12 and a water tank 13 connected thereto are present, see also Fig.5 and Fig.6. The steam generating unit 12 and the water tank 13 can be removed from the evaporator receiving area 11 or, alternatively, are permanently installed therein. The water tank 13 can be covered by a tank cap 14 on the upper side. In a front view behind the evaporator receiving area 11 there is a damper pan insertion area 15. The evaporator receiving area 11 and the damper pan inserting 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, if necessary, signal lines, e.g. for connection to sensors for the steam generation unit 12 and/or the water tank 13. In addition, running 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 a hollow profile or as a multiple walls without a hollow profile. Your tops can also serve as a support surface 19, but do not need it.

The damper pan 20 is trough-shaped or shell-shaped, in this case with a cuboid basic shape that is open at the top. On its upper side, the damper pan 20 has a flange or edge region 21 which is bent laterally outwards and is closed all the way round, via which it can be placed onto the bearing surface 19 from above. The damper pan 20 can be replaced from above into the damper pan insertion area 15 bar. The upper opening of the steamer trough 20 forms a loading opening 20a for the use of items to be treated with steam, eg items to be cooked. For this purpose, suitable inserts E can be used in the damper pan 20, on which the treatment material 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 pan 20 is used, its bottom 22 forms a flush portion of the bottom 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 supporting frame 30, which advantageously results in a saving of material.

The damper trough 20 also has laterally protruding handles 23 for easy handling, which when the damper trough 20 is in the inserted state can be fitted into a respective recess of the lateral cheeks 16 which is open at the top in the form of respective depressions 24 .

The damper pan 20 also has a steam inlet duct 25 made of plastic, which is longitudinally stretched laterally in a horizontal direction and is attached to the front wall 17 and which, when the damper pan 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 in the inserted state, has a steam-related connection to a steam removal unit 27 (in front view) behind the damper pan insertion area 15 ( see Fig.4) produces. The steam removal unit 27 is used at least to derive steam discharged from the steam treatment drawer 5 during a steam treatment process from the steamer pan 20, for example to a fume hood.

1 also shows a cover 28, which can be placed on top of the edge area 21, preferably via a seal (not shown), in order to prevent or at least to prevent steam from escaping through gaps between the damper pan 20 and the cover 28 heavy. The damper pan 20 and the cover 28 form or delimit a steam treatment chamber 29 in which the material to be treated with steam can be whipped up there. The cover 28, which is advantageously a transparent glass cover or has at least one pane of glass, can be an independent component, can be slidably arranged on the support frame 30, or can be pivotably connected to the support frame 30, for example via rotary hinges. 3 shows the damper pan 20 in an oblique view 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, opening into the damper pan 20 or the steam treatment chamber 29, here: slot-shaped, through which steam D is introduced into the damper pan 20 during a steam treatment process.

The steam outlet channel 26 in the form of an adapter (see FIG. 4) is arranged on the rear side 32 below the edge area 21 . Also has a horizontally stretched basic shape and is open on the underside in the form of a coupling opening 26b (see FIG. 4). The steam outlet duct 26 can be shaped at least largely identically to the steam inlet duct 25 . It also has a front-side steam outlet opening 26a (not shown) that opens into the steamer pan 20 or the steam treatment chamber 29, in this case a slit, through which steam D is discharged from the steamer pan 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 generating unit 12 placed 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 conducted into the damper pan 20, as indicated by the arrows on the left. 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 upper side 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.

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

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 the top side in an oblique view from above.

The water tank 13 can be made of transparent plastic and is therefore shown here as semi-transparent. 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 illustrated) 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 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 top 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 there can be a connecting piece 46 or pipe (see Fig. 5) that projects upwards and can be inserted into the water outlet 40, which when the water tank 13 is used slides into the receiving recess 45 in the water outlet 40 and the closure mechanism located therein mechanism (e.g. a spring-loaded non-return valve) opens. 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 and is designed to Depending on a water level in the evaporator shell 41 to either open or close, for example a valve ("SchwimmerventN"), which is actuated by a floating in the evaporator shell 41 water float. This makes it possible to also fill only a small amount of water into the evaporator bowl 41 in a controlled manner, which is distributed over the large heatable base area of the evaporator bowl 41 at a comparatively low fill level, so that particularly short reaction times and/or large 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 thereon (not illustrated) and/or by means of an automatic lifting mechanism (not illustrated).

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 evaporator shell 41 without being immersed in the water in the evaporator shell 41 . That way he can The steam exiting the steam outlet opening 12a can be flavored if corresponding flavorings such as spices or the like are present in the portafilter.

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

As indicated by the wide arrow, the steam generation unit 12 or the evaporator shell 41 can be removed by the user from a corresponding evaporator recess 47 of the support frame 30 when the damper pan 20 is removed, for example to the rear. The evaporator shell 41 can then be emptied by the user after removing the adapter plate 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 evaporator dish 41 is inserted, makes contact with its bottom and thereby measures the outside temperature of this bottom. The sensor readings can be fed to a control device for controlling the evaporator 12, for example for steam regulation (activation and deactivation of the at least one heating element) and for detecting a lack of water (e.g. running empty). The control device can be a component of the steam treatment drawer 5 or of the household cooking appliance 1 in general. The control device can in particular correspond to device control 6 .

In general, "a", "an" etc. can be understood as singular or plural, 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 one" etc.

A numerical specification can also include exactly the specified number as well as a customary 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 radiators

8 bottom heating elements

10 cover plate

11 Evaporator receiving area

12 steam generating unit

12a steam outlet opening

13 water tank

14 fuel cap

15 Damper Pan Insertion Area

16 lateral cheek

17 Front Wall

18 Rear Wall

19 bearing surface

20 damper pan

20a loading port

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 outlet port

26b clutch opening

27 vapor removal unit 27a recording

27b steam inlet opening

28 cover

29 steam treatment room 30 support frame

31 Front of Damper Pan

32 Rear of the shock tray

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 well

46 nozzle 47 evaporator recess

E insert

D steam

Claims

PATENT CLAIMS

1. Steam treatment drawer (5) for a household cooking appliance (1), having an extendable support frame (30) with an evaporator (12, 13) arranged therein and a steamer tray (20) that can be replaced from above in the support frame (30) for accommodating material to be steamed, wherein a steam inlet duct (25) is attached to the steamer pan (20), which is designed in such a way that when the steamer pan (20) is used, it couples conductively to a steam outlet opening (12a) of the evaporator (12, 13). .

2. Steam treatment drawer (5) according to claim 1, wherein the steam outlet opening (12a) of the evaporator (12, 13) is an upwardly open opening and the steam inlet channel (25) has a downwardly open coupling opening (25b).

3. Steam treatment drawer (5) according to one of the preceding claims, where when the damper tray (20) is inserted, the steam inlet channel (25) is placed in a steam-tight manner with a flat border of its coupling opening (25b) on a flat border of the steam outlet opening (12a).

4. Steam treatment drawer (5) according to one of claims 1 to 2, wherein when a damper tray (20) is set, a border of a coupling opening (25b) of the steam inlet channel (25b) is plugged into a border of the steam outlet opening (12a) in a steam-tight manner.

5. steam treatment drawer (5) according to claim 4, wherein at least one of the order borders is stepped in cross section.

6. Steam treatment drawer (5) according to one of the preceding claims, where a steam removal unit (27) is arranged in the extendable support frame (30), a steam outlet channel (26) is connected to a steam outlet opening (26a) of the steamer pan (20) and the steam outlet channel (26) is designed in such a way that, when the damper pan (20) is used, it couples conductively to the steam removal unit (27) in terms of steam technology.

7. steam treatment drawer (5) according to any one of the preceding claims, wherein in front view, the evaporator (12, 13) is arranged in front of the inserted steamer pan (20) and the vapor removal unit (27) is arranged behind the inserted steamer pan (20).

8. Steam treatment drawer (5) according to claim 7, wherein a steam inlet opening (25a) of the steam inlet duct (25) opening into the damper pan (20) is arranged on a front wall (31) of the damper pan (20) and a steam inlet opening in the damper pan (20 ) opening steam outlet opening (26a) is arranged on a rear wall (32) of the damper pan (20).

The steam treatment drawer (5) according to claim 7, wherein the steam inlet port (25a) and the steam outlet port (26a) are integrated into respective side handles (23) of the steamer pan (20).

The steam treatment drawer (5) according to any one of claims 8 to 9, wherein the steam inlet port (25a) and the steam outlet port (26a) each have a horizontally oriented elongated shape.

11. Domestic cooking appliance (1), comprising at least one steam treatment drawer (5) according to any one of the preceding claims.

12. Household cooking appliance (1) according to claim 11, wherein the household cooking appliance (1) has a fume hood and the steam removal unit (27) in a retracted state of the steam treatment drawer (5) is steam-connected to the fume hood on the steam outlet side.

13. Household cooking appliance (1) according to any one of claims 11 to 12, wherein the household cooking appliance (1) with an oven door (3) closable stationary oven chamber (2) and a separately arranged steam treatment drawer (5).