WO2018172877A1

WO2018172877A1 - Cooking appliance device and method for operating a cooking appliance device

Info

Publication number: WO2018172877A1
Application number: PCT/IB2018/051552
Authority: WO
Inventors: Juan Jose Galindo Perez; Maria Lourdes Grande Mainar; Carlos Obon Abadia; Alvaro RIGUAL ITURRIA; Pablo RUIZ ARNAL
Original assignee: BSH Hausgeräte GmbH
Priority date: 2017-03-20
Filing date: 2018-03-09
Publication date: 2018-09-27
Also published as: EP3601888B1; ES2682526B1; EP3601888A1; ES2682526A1

Abstract

The invention relates to a cooking appliance device comprising an induction heating unit (20), a catalyst unit (30), which is provided to influence at least one chemical reaction in an exhaust air flow (18), and comprising a heat transfer unit (40), which is at least provided in at least one operating state to transfer thermal energy to the catalyst unit (30). To improve flexibility, it is proposed that the induction heating unit (20) is at least provided to heat the heat transfer unit (40) at least in part in the operating state.

Description

COOKING DEVICE AND METHOD FOR OPERATING A COOKING DEVICE

The invention is based on a cooking device device according to the preamble of claim 1 and a method for operating a cooking device device according to the preamble of claim 13.

From DE 198 42 760 A1 discloses a stove is known, with a arranged in an air flow catalyst, which has a heatable by means of a current flow catalyst carrier.

Furthermore, from DE 28 17 101 A1 an oven with a grill element and a catalyst known, which is connected to the grill element and can be heated by the grill element. In order to avoid a heating and catalytic effect of the catalyst which is offset in time relative to the cooking chamber, the catalyst is arranged close to the grill element.

In addition, EP 1 767 868 A2 discloses an oven with a heating element and a catalyst arranged in a venting area, which is connected to the heating element and heated by means of the heating element.

The object of the invention is in particular to provide a generic device with improved properties in terms of efficiency. The object is solved by the characterizing features of claims 1 and 13, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

The invention is based on a cooking appliance device, in particular an induction cooking appliance device, with an induction heating unit, with a catalyst unit which is intended to influence at least one chemical reaction in an exhaust air flow, and with a heat transfer unit, which is at least provided in at least one operating state, to transfer a heat energy to the catalyst unit.

It is proposed that the induction heating unit is at least provided to at least partially heat the heat transfer unit in the operating state. With this configuration, a cooking appliance apparatus having improved properties in terms of efficiency, in particular, catalysis efficiency, heating efficiency, power efficiency, energy efficiency, material efficiency, component efficiency, cost efficiency, maintenance efficiency and / or assembly efficiency. In this case, in particular, an advantageously rapid heating can be achieved. In addition, in particular an advantageous flexibility, in particular a mounting flexibility and / or a flexible arrangement of the catalyst unit can be realized. Furthermore, a simple and / or compact design can be achieved. As a result, in particular a service life and / or a fatigue strength can be improved.

In this context, a "cooking device device" is to be understood as meaning, in particular, at least one part, in particular a subassembly, a cooking device, in particular a hob, a grill device, a microwave and / or preferably an oven The cooking appliance and / or the cooking appliance device particularly advantageously comprises at least two operating states, in particular at least one first heating operating state, advantageously a baking and / or cooking operating state, and at least one second In addition, the cooking appliance device can in particular at least one cooking appliance housing, in particular with at least one cooking appliance wall and advantageously a plurality of cooking appliance wall ments, which advantageously at least one, particularly advantageous, exactly delimits / delimits exactly one cooking space to at least one major part. At least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85%, and particularly advantageously at least 95% are to be understood as meaning "at least a large part" Object another object "influenced" in particular be understood that the further object in an absence and / or inactivity of the object has a different state and / or a different form and / or assumes than in the presence and / or activity of the object. Furthermore, the term "provided" is to be understood to mean in particular specially designed and / or equipped.Assuming that an object is intended for a specific function should in particular mean that the object fulfills this specific function in at least one application and / or operating state and / or executes.

An "induction heating unit" should in particular be understood to mean a heating unit which has at least one, in particular planar, inductor and advantageously at least one, in particular electrically insulating and advantageously flat, insulating element and in particular for inductive heating of at least one object, in particular at least the heat transfer unit In addition, the Induktionsheizeinheit advantageously be provided to heat at least one of the Gargerätewandungen and / or a cooking product located in the cooking chamber. A "planar" object is to be understood in particular as an object in which a largest side surface of a smallest, in particular imaginary, cuboid, which just completely encloses the object, by at least 50%, advantageously by at least 100%, preferably by at least 200 % and more preferably by at least 500% greater than each side surface of the cuboid disposed perpendicular to the largest side surface.

Furthermore, a "catalyst unit" is to be understood as meaning, in particular, a unit formed separately from the induction heating unit, which unit has at least one catalyst element and advantageously at least two catalyst elements and in particular is intended to influence, in particular facilitate and / or enhance a chemical reaction Advantageously, the catalyst unit is provided to cause a dissolution, destruction, degradation and / or neutralization of particles emitted in particular in the first heating operating state and / or the second heating operating state, in particular odor particles, and / or molecules, in particular odor molecules The catalyst elements comprise in particular at least one, in particular catalytically active, catalyst layer and preferably one, in particular catalytically inactive and preferably flat, catalyst support, on which in particular the catalyst can be applied. The catalyst support is advantageously at least partially, preferably at least to a large extent and particularly preferably completely made of a ceramic and / or ferromagnetic material.

Furthermore, a "heat transfer unit" should in particular be understood to mean a unit which is advantageously formed separately from the catalyst unit and / or the induction heating unit and is in particular connected to the catalyst unit and / or the induction heating unit, which unit is intended in particular for heat energy by means of heat radiation, Advantageously, the heat transfer unit converts at least partially an electrical and / or electromagnetic energy provided by the induction heating unit into heat energy, in particular by means of eddy currents and / or preferably from a further heating unit differently shaped from the induction heating unit, such as, for example, a resistance heating unit. In addition, an "exhaust air stream" is to be understood as meaning in particular a fluid stream which fluidly connects the cooking chamber to an outer region of the cooking appliance and in particular effects and / or provides fluid transport from the cooking chamber to the outer region Cooking chamber and the outside area and / or a removal of vapors released in the first heating mode and / or in the second heating mode, particles, in particular smoke and / or odor particles, and / or molecules, in particular odor molecules cause.

In particular, in order to enable a flexible arrangement of the catalyst unit and / or an advantageously efficient, rapid and / or controlled heating of the catalyst unit, it is proposed that the heat transfer unit is at least partially provided for heat transfer by means of a heat conduction. Preferably, the heat transfer unit is at least partially, advantageously at least a large part and particularly preferably completely, of a thermally conductive and preferably ferromagnetic material, in particular a metal and / or a metal alloy. Preferably, the heat transfer unit can also be designed as a heat conducting unit. In addition, the heat transfer unit can have at least one heat transfer element which is designed as a catalyst support which is present, in particular at least partially, advantageously at least a large part and particularly advantageously entirely of a ferromagnetic material and / or in particular inductively heatable. However, the heat transfer unit is advantageously designed differently from a catalyst support.

Particularly advantageously, the cooking device device further comprises a housing unit, which in particular at least one, in particular designed as an inlet opening, first passage opening and at least one, in particular designed as an outlet opening, second passage opening and is in particular at least provided to guide the exhaust air flow at least partially, whereby in particular a advantageous guidance of the exhaust air flow can be achieved. In addition, the housing unit is preferably provided for receiving the catalyst unit and / or at least one catalyst element of the catalyst unit. Particularly preferably, the housing unit is integrally formed. In this context, "integral" is to be understood in particular as being at least materially bonded and / or integrally formed with each other The material bond can be produced, for example, by an adhesive process, an injection process, a welding process, a soldering process and / or another process in one piece and / or in one piece be understood shaped. Preferably, this is a piece of a single blank, a mass and / or a casting, such as in an extrusion process, in particular a one- and / or multi-component extrusion process, and / or an injection molding process, in particular a single and / or multi-component Injection molding process, manufactured. In particular, the heat transfer unit has at least one heat transfer element, which is formed integrally with the housing unit. Advantageously, the heat transfer element is designed as a housing part of the housing unit.

Furthermore, it is proposed that the cooking appliance device has a housing unit, in particular the previously mentioned housing unit, which is at least provided to at least partially guide the exhaust air flow, and with which the heat transfer unit is formed at least partially in one piece. As a result, cost efficiency, component efficiency, material efficiency and / or assembly efficiency can advantageously be improved. In addition, in particular a simple construction can be achieved. In this context, it should be understood, in particular, that the objects have at least one common component and / or at least one component of the object and / or the object in one piece with at least one Component of the further object and / or the other object is connected and / or formed, but preferably all components of the object are formed integrally with at least one component of the further object.

In particular, in order to increase a heat output transferred to the heat transfer unit, it is proposed that the heat transfer unit has at least one planar heat transfer element whose main extension plane is arranged at least substantially parallel to a main extension plane of the induction heating unit. A "main extension plane" of an object is to be understood in particular as meaning a plane which is parallel to a largest side surface of a smallest, in particular imaginary, cuboid which just completely surrounds the object, and preferably by a center, in particular a geometric center, of the cuboid The heat transfer element and the induction heating unit preferably overlap at least partially, advantageously at least to a large extent and more preferably completely, in particular in a direction perpendicular to the main extension plane of the induction heating unit Further, advantageously, the induction heating unit and the heat transfer element contact each other at a contact surface in a plane , Which is arranged in particular at least substantially parallel to the main extension plane of the heat transfer element. Furthermore, the term "at least substantially parallel" should be understood to mean, in particular, an orientation of a plane or a direction relative to a reference plane or a reference direction, wherein the plane or direction with the reference plane or reference direction makes an angle of, in particular, less than 8 ° of less than 4 ° and particularly advantageously less than 2 °.

In a further embodiment of the invention, it is proposed that the heat transfer unit has at least two heat transfer elements, in particular a first heat transfer element and a second heat transfer element, which are intended to cooperate for heating the catalyst unit. As a result, in particular a particularly flexible arrangement and / or a particularly flexible heating of the catalyst unit can be achieved.

It is also proposed that the heat transfer elements, in particular the first heat transfer element and the second heat transfer element, are integrally connected to each other and thus in particular form a common component. In this way, in particular a particularly flexible heat transfer unit can be provided. In addition, in particular a production can be simplified. Preferably, the, in particular entire, heat transfer unit is integrally formed.

In particular, in order to enable a fast, flexible and powerful heating, it is also proposed that in particular the first heat transfer element for indirect heating and the second heat transfer element are provided for direct heating of the catalyst unit. In particular, the first heat transfer element is indirectly, in particular by means of the second heat transfer element, connected to the catalyst unit. In addition, the second heat transfer element is in particular connected directly to the catalyst unit. Advantageously, the first heat transfer element and particularly advantageously additionally the second heat transfer element are designed to be heatable by means of the induction heating unit. In this case, the induction heating unit is particularly advantageously provided to heat at least the first heat transfer element and advantageously also the second heat transfer element in the operating state.

According to a further embodiment of the invention, it is proposed that the cooking appliance device comprises a housing unit, in particular the one already mentioned above Housing unit, which has at least one, in particular as an inlet opening and / or outlet opening formed, and is intended to lead the exhaust air flow at least partially, wherein the catalyst unit has at least one catalyst element, which viewed in a direction of the exhaust air stream in one area the passage opening is arranged. In this way, in particular a simple construction, installation and / or maintenance can be achieved. Advantageously, the catalyst element contacts the housing unit and is in particular thermally, advantageously conductive, coupled to the housing unit. Advantageously, the through-opening defines a housing input region, preferably adjacent to the cooking chamber, through which the exhaust air flow enters the housing unit and / or a housing outlet region through which the exhaust air flow exits the housing unit. By "an area of an object" is meant in particular a volume of a smallest imaginary cuboid, which just completely encloses the object.

In addition, it is proposed that the housing unit has at least one further passage opening, in particular formed as an inlet opening and / or outlet opening, and the catalyst unit has at least one further catalyst element which, viewed in the direction of the exhaust air flow, is arranged in a region of the further passage opening. In this way, in particular a simple construction, installation and / or maintenance can be achieved. Furthermore, this advantageously allows flexibility, in particular a flexible arrangement of the catalyst unit. Advantageously, the further catalyst element contacts the housing unit and is in particular thermally, advantageously conductive, coupled to the housing unit.

In addition, the housing unit may advantageously be formed at least partially in one piece with the catalyst unit. In particular, at least one inner wall side of the housing unit facing the exhaust air stream could be at least partially coated with a catalyst layer and / or formed as a catalyst element. As a result, advantageously a catalytic efficiency and / or a component efficiency can be increased.

In particular, the induction heating unit may be specially, in particular exclusively, provided for heating the heat transfer unit. Preferably, however, the induction heating unit is at least partially provided for heating the heat transfer unit and at least partially for heating the food in the cooking chamber. Furthermore, it is proposed that the induction heating unit is designed as a Grillinduktionsheizeinheit, which is in particular at least provided, in a Grillbetriebszustand that in the cooking chamber to heat the food to be cooked. As a result, in particular an efficient, fast and powerful heating can be achieved. Furthermore, it can be advantageous to dispense with a separate induction heating unit for heating the catalyst unit.

In particular, in order to increase catalytic efficiency and / or catalytic efficiency, it is proposed that the cooking appliance device have a regulation unit which is provided for regulating a flow rate of the exhaust air flow, in particular as a function of at least one of the heating operation states. The regulation unit is preferably provided to set a lower flow velocity in the second heating operating state, in particular as a pyrolysis operating state, than in the first heating operating state, in particular as a baking and / or cooking operating state. Furthermore, the regulation unit is advantageously downstream in the direction of the exhaust air flow of the housing unit, whereby in particular a particularly advantageous regulation can be achieved.

In addition, the invention is based on a method for operating a cooking appliance device comprising a catalyst unit, which is intended to influence at least one chemical reaction in an exhaust air flow.

It is proposed that thermal energy generated by an induction heating unit is transmitted to the catalyst unit by means of a heat transfer unit. With this configuration, a cooking appliance apparatus having improved properties in terms of efficiency, in particular, catalysis efficiency, heating efficiency, power efficiency, energy efficiency, material efficiency, component efficiency, cost efficiency, maintenance efficiency, and / or assembling efficiency, and / or rapid heating to be provided. In addition, in particular an advantageous flexibility, in particular a mounting flexibility and / or a flexible arrangement of the catalyst unit can be provided. Furthermore, a simple and / or compact design can be achieved. As a result, in particular a service life and / or a fatigue strength can be improved.

Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations. Show it:

Fig. 1 is a part of an example designed as an induction oven

Cooking appliance with a cooking appliance device, in a schematic representation,

2 is a sectional view of at least part of an induction heating unit, a catalyst unit and a heat transfer unit of the cooking appliance apparatus;

3 is a perspective sectional view of the heat transfer unit and the catalyst unit,

4 is an external perspective view of the heat transfer unit and a part of the catalyst unit,

Fig. 5 is a perspective sectional view of a part of

Heat transfer unit and a portion of the induction heating unit, Fig. 6 shows a regulating unit of Gargerätevorrichtung in a perspective

Sectional view

7 is a perspective sectional view of a part of the regulating unit with a passage opening and

Fig. 8 is a perspective view of a part of the regulating unit with a

Closure element.

FIG. 1 shows a schematic representation of at least one part of a cooking appliance 10 embodied as an oven by way of example. The cooking appliance 10 is designed as Induktionsgargerät, in the present case, in particular as an induction oven. Alternatively, a cooking appliance could be designed as a hob, in particular an induction hob, as a grill, in particular an induction grill, and / or as a microwave, in particular an induction microwave. In principle, a cooking appliance could also be designed as a further, in particular electric, alternatively and / or additionally gas-operated and / or oil-operated cooking appliance.

The cooking appliance 10 comprises a cooking appliance device. The cooking appliance device has a cooking appliance housing 12. The cooking appliance housing 12 is formed in the present case as a baking oven muffle. The Gargerätegehäuse 12 limits a cooking chamber 16 at least a large part. Furthermore, the cooking appliance housing 12 has a cooking appliance wall 14, which in the present case is designed in particular as a muffle wall. The cooking appliance wall 14 is arranged above the cooking chamber 16 with respect to a direction of gravity 70. In addition, the cooking appliance 10 comprises an outer housing (not shown) and a device closure element (not shown). In the present case that is Device closure element designed as a device flap. The device closure element is intended to close the cooking chamber 16.

Furthermore, the cooking appliance 10 and / or the cooking appliance device has two Heizbetnebszustände. A first heating operation state of the heating operation conditions is formed as a baking operation state. The cooking appliance 10 is provided in the first heating operation state to heat a cooking product (not shown) located in the cooking chamber 16. Furthermore, a second heating operation state of the heating operation conditions is formed as a pyrolysis operation state. The cooking appliance 10 is provided in the second heating operation state to carbonize Gargutreste (not shown), advantageously to facilitate cleaning of the cooking appliance housing 12. Alternatively, a cooking appliance housing could limit several cooking spaces. Furthermore, a device closure element could also be designed as a device door. It is also conceivable that a Gargerätewandung is arranged with respect to the direction of gravity below or laterally of a cooking chamber. In addition, a cooking appliance device could have at least one cooking operating state, at least one further baking operating state and / or at least one further pyrolysis operating state.

The cooking device device comprises at least one induction heating unit 20 (see also FIG. 5). The induction heating unit 20 is arranged on the cooking appliance wall 14. In the present case, the induction heating unit 20 is formed as a grill induction heating unit. The induction heating unit 20 in the present case has a heat output of at least 1200 W, in particular of at least 1800 W and of at most 5400 W, in particular of at most 3600 W. The induction heating unit 20 is intended to induce Wrbel currents and thus to cause inductive heating. In the present case, the induction heating unit 20 is at least partially provided in the first heating operating state to heat a cooking product located in the cooking chamber 16. Furthermore, in the second heating operating state, the induction heating unit 20 is at least partially provided for heating the cooking appliance housing 12 to at least 400 °, in particular to at least 450 ° and advantageously to at least 500 °.

For this purpose, the induction heating unit 20 comprises an inductor 22. In the present case, the inductor 22 is designed as a grill inductor. In addition, the inductor 22 is formed flat. Furthermore, the induction heating unit 20 has two insulation elements 24, 26. The isolation elements 24, 26 are intended to electrically isolate the inductor 22. Alternatively, a cooking appliance device could comprise at least one heating unit differently shaped by an induction heating unit, for example a resistance heating unit. Furthermore, a Gargerätevorrichtung could several, advantageous to have different cooking appliance walls arranged induction heating units. In addition, an induction heating unit could have a plurality of, in particular stacked and / or juxtaposed inductors. Furthermore, the induction heating unit could have only one isolation element or more than two isolation elements. Furthermore, alternatively or additionally, further heating units, in particular induction heating units, could be provided to at least partially heat a cooking product and / or a cooking appliance housing in the heating operating states.

In addition, the cooking device device comprises a housing unit 50. The housing unit 50 is arranged on the cooking appliance wall 14. In addition, a large part of the housing unit 50 is arranged with respect to the direction of gravity 70 above the cooking appliance wall 14. The housing unit 50 is provided to guide an exhaust air flow 18 at least partially.

The housing unit 50 will now be described in more detail below with reference to FIGS. 2 to 4. The housing unit 50 is at least substantially tubular. The housing unit 50 is at least substantially S-shaped. The housing unit 50 is in fluid communication with a, in particular adjacent to the cooking chamber 16, housing inner region. In the present case, the housing unit 50 is provided to guide the exhaust air flow 18 to a length of at least 80 mm and at most 150 mm, in particular of at least 110 mm and at most 120 mm.

The exhaust air flow 18 connects the cooking chamber 16 fluidly with an outdoor area (not shown) of the cooking appliance 10. The exhaust air stream 18 is provided to transport exhaust air from the cooking chamber 16 to the outside. The exhaust air is formed as a mixture of air, a vapor and / or at least one flue gas. In addition, the exhaust air flow 18 is provided to allow a pressure equalization between the cooking chamber 16 and the outside area in the heating operating conditions. Alternatively, a cooking appliance device could comprise a plurality of housing units for guiding an exhaust air flow. In addition, a housing unit with respect to the direction of gravity could be arranged below a cooking appliance. It is also conceivable that the housing unit is formed I-shaped, L-shaped, semicircular and / or different.

In the present case, the housing unit 50 is designed in several parts, whereby in particular a simple assembly of the housing unit 50 is made possible. In the present case, the housing unit 50 has, by way of example, two housing elements 51, 53, which are connected in a materially bonded manner in a completely assembled state. Alternatively, it is conceivable to form a housing unit in one piece. The housing unit 50 also has a passage opening 52. The passage opening 52 is formed as an entrance opening. Furthermore, the passage opening 52 has, for example, a rectangular cross-section. Furthermore, the passage opening 52 defines an input opening area which adjoins the cooking space 16. The exhaust air flow 18 enters the housing unit 50 through the passage opening 52.

In addition, the housing unit 50 has a further passage opening 54. The further passage opening 54 is formed as an exit opening. In addition, the further passage opening 54 by way of example has a round cross-section. The further passage opening 54 defines a housing exit area. The exhaust air flow 18 exits through the further passage opening 54 from the housing unit 50.

Furthermore, the housing unit 50 encloses a housing intermediate region 56. The housing intermediate region 56 fluidly connects the through-opening 52 with the further through-opening 54. In the present case, the housing intermediate region 56 has an elongate cross-section. As a result, a portion of the housing unit 50 delimiting the housing intermediate region 56 is formed flat, whereby a flat construction can advantageously be achieved. Alternatively, a housing unit could comprise a housing element or more than two housing elements. Furthermore, housing elements could be detachably connected to each other. In addition, the housing unit could have at least one further passage opening formed as an inlet opening and / or outlet opening. In addition, a cross section of an inlet opening, an outlet opening and / or a housing intermediate region could be round, oval, square, rectangular, triangular, hexagonal, semicircular and / or different.

The cooking appliance device further comprises a catalyst unit 30. The catalyst unit 30 is formed separately from the housing unit 50 in the present case. The catalyst unit 30 is disposed inside the housing unit 50. In addition, the catalyst unit 30 is partially positively connected to the housing unit 50. The catalyst unit 30 is intended to influence a chemical reaction in the exhaust air stream 18. In the present case, the catalyst unit 30 is intended to facilitate and / or accelerate the chemical reaction. Furthermore, the catalyst unit 30 is provided to realize a partial odor neutralization of the exhaust air in the Heizbetriebszuständen by means of the chemical reaction. The chemical reaction causes a reduction and / or destruction of smoke and / or odor particles emitted in the heating operating states and smoke and / or odor molecules. A maximum catalytic effect of the catalyst unit 30 is achieved in the present case at a temperature of more than 300 °, and preferably of more than 350 °. Alternatively, a catalyst unit could be partially or completely formed integrally with a housing unit. Advantageously, at least one, in particular an intermediate region of the housing unit limiting and an exhaust air flow facing, inner wall side of the housing unit could be at least partially coated with a catalyst layer and / or formed as a catalyst element. Furthermore, a catalyst unit could be arranged at least partially outside the housing unit. In addition, the catalyst unit could be non-positively fixed to a housing unit and / or stored.

The catalyst unit 30 has a catalyst element 32. The catalyst element 32 is arranged in the region of the passage opening 52, viewed in the direction of the exhaust air flow 18. In addition, the catalyst element 32 contacts the housing unit 50. The catalyst element 32 is connected to the housing unit 50 at least in a form-fitting manner. Furthermore, the catalyst element 32 comprises a catalyst layer (not shown). The catalyst layer is formed of a catalytically active material. In addition, the catalyst element 32 comprises a catalyst carrier (not shown). The catalyst support is formed of a catalytically inactive material. Furthermore, viewed in the direction of the exhaust air flow 18, the catalyst support has a latticed structure. In this case, a plurality of openings penetrates the catalyst carrier parallel to the direction of the exhaust air flow 18. The catalyst layer is applied to the catalyst support.

In addition, the housing unit 50 has a fixing element 58 which fixes the catalyst element 32. The fixing element 58 fixes the catalyst element 32 against the direction of gravity 70. Alternatively, a catalyst element could be arranged completely inside or outside a region of a passage opening. In addition, the catalyst element could be formed without contact to a housing unit. Furthermore, a catalyst element could be fixed or mounted non-positively and / or differently on the housing unit. In addition, a fixing element could fix the catalyst element in a direction perpendicular to the direction of gravity. In addition, a catalyst support could have a reticulated, a spongy and / or a honeycomb-shaped structure. In principle, it is also conceivable that the catalyst support is formed free of openings.

In the present case, the catalyst unit 30 further comprises a further catalyst element 34. The further catalyst element 34 is in the direction of the exhaust air flow 18, viewed in a region of the further passage opening 54. In addition, the further catalyst element 34 contacts the housing unit 50. The further catalyst element 34 is connected to the housing unit 50 in a positive and non-positive manner. Furthermore, the further catalyst element 34 comprises a further catalyst layer (not shown). The further catalyst layer is formed from a catalytically active material, in the present case in particular the same catalytically active material as the catalyst layer. In addition, the further catalyst element 34 comprises a further catalyst support. The further catalyst support is formed from a catalytically inactive material, in this case in particular the same catalytically inactive material as the catalyst support. Furthermore, the further catalyst carrier, viewed in the direction of the exhaust air stream 18, has a latticed structure. In this case, a multiplicity of further openings penetrate the further catalyst support parallel to the direction of the exhaust air flow 18. The further catalyst layer is applied to the further catalyst support.

The catalyst element 32 and the further catalyst element 34 cooperate to catalyze the exhaust air flow 18. Alternatively, a catalyst unit could have only one catalyst element or at least three catalyst elements. Advantageously, at least one catalyst element, advantageously a catalyst carrier element, could be formed at least as part of a housing unit, in particular a housing wall, which advantageously delimits an intermediate area. Furthermore, a housing unit could have a further fixing element, which fixes a further catalyst element, advantageously against the direction of gravity.

In addition, the cooking appliance device has a heat transfer unit 40. In the present case, the heat transfer unit 40 is integrally formed. The heat transfer unit 40 is disposed in a vicinity of the induction heating unit 20. In the present case, the heat transfer unit 40 contacts the induction heating unit 20. In addition, the heat transfer unit 40 is formed integrally with the housing unit 50. Further, the heat transfer unit 40 is formed separately from the catalyst unit 30. The heat transfer unit 40 is thermally coupled to the catalyst unit 30, in particular the catalyst element 32 and the further catalyst element 34. The heat transfer unit 40 consists of at least a large part of a thermally conductive material. In the present case, the heat transfer unit 40 at least largely consists of a ferromagnetic metal. Alternatively or additionally, a heat transfer unit could have a plurality of disassemblably connected sections. In addition, one could Heat transfer unit to be formed separately from a housing unit. Furthermore, the heat transfer unit could be formed integrally with a catalyst unit and / or a catalyst element. In addition, the heat transfer unit could consist of a thermally conductive and / or ferromagnetic metal alloy or the like.

The induction heating unit 20 is provided to heat the heat transfer unit 40, in particular inductively, in the heating operating states. In the present case, the heat transfer unit 40 is provided in the heating operating conditions to transmit a heat energy, in particular caused by the induction heating unit 20, to the catalyst unit 30. In this case, the heat transfer unit 40 is provided at least for heat transfer by means of a heat conduction. Accordingly, the induction heating unit 20 is provided to heat the catalyst unit 30 by means of the heat transfer unit 40 in particular such that the catalyst unit 30 within a maximum of 3 minutes, in particular within 2 minutes at most and advantageously within a maximum of 1 min, a temperature of 350 ° reached. Alternatively or additionally, a heat transfer unit could be provided for heat transfer by means of convection and / or thermal radiation. Furthermore, further heating units, in particular induction heating units, could be provided to at least partially heat a heat transfer unit in the heating operating states. Furthermore, an induction heating unit and / or a further heating unit, especially, especially exclusively, could be provided for heating the heat transfer unit. In principle, it is also conceivable that an induction heating unit and / or a further heating unit is provided to directly heat a catalyst unit.

For heating the catalyst unit 30 by the induction heating unit 20, the heat transfer unit 40 in the present case exemplarily comprises two heat transfer elements 42, 44. The heat transfer elements 42, 44 are integrally connected to one another. The heat transfer elements 42, 44 are intended to cooperate to heat the catalyst unit 30. Alternatively, a heat transfer unit could comprise only one heat transfer element or more than two heat transfer elements. In addition, the heat transfer elements could be formed separately from each other. In addition, each of the heat transfer elements could separately cause heating of a catalyst unit.

A first heat transfer element 42 of the heat transfer elements 42, 44 is formed as a planar heat transfer element 42. A main extension plane of the first heat transfer element 42 is arranged at least substantially parallel to a main extension plane of the induction heating unit 20. The first heat transfer element 42 is arranged in the region of the induction heating unit 20. In the present case, the first heat transfer member 42 contacts one of the insulation members 24, 26 of the induction heating unit 20. Here, the first heat transfer member 42 and the induction heating unit 20 intersect in a direction perpendicular to the main extension plane of the induction heating unit 20. In addition, the first heat transfer member 42 is formed as a holding member of the heat transfer unit 40. The induction heating unit 20 is provided to inductively heat the first heat transfer member 42 in the heating operation states. For this purpose, the first heat transfer element 42 consists of a thermally conductive and ferromagnetic metal. The first heat transfer member 42 is provided to convert an electromagnetic energy of the induction heating unit 20 into heat energy by means of a Wrlow current. The first heat transfer element 42 is provided for indirect heating of the catalyst unit 30. Alternatively, a first heat transfer element could be spaced from an induction heating unit. In principle, a first heat transfer element could also be provided for direct heating of a catalyst unit.

A second heat transfer element 44 of the heat transfer elements 42, 44 is formed as part of the housing unit 50, in particular as a housing side wall of the housing intermediate portion 56. The second heat transfer element 44 is provided for direct heating of the catalyst unit 30. For this purpose, the second heat transfer element 44 contacts the catalyst unit 30 directly. In addition, the second heat transfer element 44 is provided to provide heat transfer from the first heat transfer element 42 to the catalyst unit 30. For this purpose, the second heat transfer element 44 directly contacts the first heat transfer element 42. Moreover, in the present case, the induction heating unit 20 is provided to heat the second heat transfer member 44 in the heating operation states. For this purpose, the second heat transfer element 44 consists of a thermally conductive and ferromagnetic metal. Alternatively or additionally, a heat transfer unit could comprise at least one heat transfer element, which is designed as a catalyst carrier and / or is heated by means of an induction heating unit in at least one heating operating state. In principle, a second heat transfer element could also be provided for indirect heating of a catalyst unit. This could be the second Heat transfer element to be indirectly connected to the catalyst unit. Furthermore, it is conceivable to form a second heat transfer element made of a material which can not be heated inductively. In addition, a second heat transfer element could be provided exclusively for heat transfer.

The cooking appliance device furthermore comprises a regulation unit 60 (see FIGS. 6 to 8). The regulation unit 60 is downstream of the housing unit 50 in the direction of the exhaust air flow 18. The regulation unit 60 is provided for regulating a flow velocity of the exhaust air flow 18. Furthermore, the regulation unit 60 is provided to set a lower flow velocity in the second heating operating state, in particular as a pyrolysis operating state, than in the first heating operating state, in particular as a baking operating state. Alternatively, a regulation unit could be connected upstream of a housing unit. In addition, a regulation unit could set a flow rate independent of heating operating conditions.

The regulation unit 60 comprises a closure element 64. The closure element 64 is shown in an open state in FIG. In the open state, the closure element 64 allows escape of the exhaust air flow 18. The closure element 64 is formed in the present case as a flap. The closure element 64 is also movably mounted on a guide element 66.

The regulation unit 60 also has a drive unit 68. The drive unit 68 is provided to move the closure element 64 on a path of movement predetermined by the guide element 66. In addition, the drive unit 68 is provided to transfer the closure element 64 from the open state to a closed state or from the closed state to the open state. The drive unit 68 is provided in the second heating operation state to transfer the closure element 64 in the closed state. In addition, in the first heating operating state, the drive unit 68 is provided to bring the closure element 64 into the open state. Alternatively, a regulation unit could have a plurality of closure elements. In addition, a closure element could be formed like a sliding door and / or aperture.

The regulation unit 60 furthermore has a passage opening 62 (see in particular FIG. The passage opening 62 is open continuously in both heating operating states. The passage opening 62 is provided to allow pressure equalization between the cooking chamber 16 and the outside area. Furthermore, the passage opening 62 allows in the Closed state of the closure member 64 is an escape of the relation to the open state slowed down exhaust air stream 18th

In the opened state, the exhaust air flow 18 has a flow velocity of at least 0.7 m / s, in particular at least 1.0 m / s and at most 1.6 m / s, in particular at most 1.2 m / s. In the closed state of the closure element 64, the exhaust air flow 18 has a flow velocity of at least 0.2 m / s, in particular of at least 0.25 m / s and at most 0.4 m / s, in particular of at most 0.35 m / s , In the present case, the exhaust air entrained in the exhaust air flow 18 has a slower flow time in the closed state of the closure element 64, resulting in an increased contact time with the catalyst unit 30. As a result, the catalytic effect of the catalyst unit 30 is enhanced and at the same time a fluid exchange between the cooking chamber 16 and the outside area is made possible. Alternatively, a regulatory unit could have multiple ports. In addition, a passage opening could be designed to be closable.

Reference sign Gargerät

Gargerätegehäuse

Gargerätewandung

oven

exhaust air flow

induction heating

inductor

insulation element

catalyst unit

catalyst element

Heat transfer unit

Heat transfer element

housing unit

housing element

Through opening

housing element

Through opening

Intermediate housing area

fixing

regulatory unit

Port

closure element

guide element

drive unit

The direction of gravity

Claims

claims

A cooking appliance apparatus comprising an induction heating unit (20) having a catalyst unit (30) adapted to affect at least one chemical reaction in an exhaust air stream (18) and a heat transfer unit (40) at least in at least one operating condition is provided to transfer a heat energy to the catalyst unit (30), characterized in that the induction heating unit (20) is provided at least to at least partially heat in the operating state, the heat transfer unit (40).

2. Gargerätevorrichtung according to claim 1, characterized in that the heat transfer unit (40) is at least partially provided for heat transfer by means of a heat conduction.

3. cooking appliance device according to claim 1 or 2, characterized by a housing unit (50), which is at least provided to at least partially guide the exhaust air flow (18), and with which the heat transfer unit (40) is at least partially formed in one piece.

4. Gargerätevorrichtung according to any one of the preceding claims, characterized in that the heat transfer unit (40) has at least one planar heat transfer element (42) whose main extension plane is arranged at least substantially parallel to a main extension plane of the induction heating unit (20).

5. cooking device device according to one of the preceding claims, characterized in that the heat transfer unit (40) has at least two heat transfer elements (42, 44) which are intended to cooperate for heating the catalyst unit (30).

6. Gargerätevorrichtung according to claim 5, characterized in that the heat transfer elements (42, 44) are integrally connected to each other.

A cooking apparatus according to claim 5 or 6, characterized in that a first heat transfer element (42) of the heat transfer elements (42, 44) for indirect heating and a second heat transfer element (44) of the heat transfer elements (42, 44) for direct heating of the catalyst unit (30) is provided.

8. cooking device device according to one of the preceding claims, characterized in that the housing unit (50) has at least one passage opening (52) and is intended to at least partially guide the exhaust air flow (18), wherein the catalyst unit (30) at least one catalyst element ( 32) which, viewed in a direction of the exhaust air flow (18), is arranged in a region of the passage opening (52).

9. cooking device device according to claim 8, characterized in that the housing unit (50) has at least one further passage opening (54) and the catalyst unit (30) at least one further catalyst element (34), which in the direction of the exhaust air stream (18) viewed in a Region of the further passage opening (54) is arranged.

10. Gargerätevorrichtung according to any one of the preceding claims, characterized in that the induction heating unit (20) is designed as a Grillinduktionsheizeinheit.

1 1. cooking device device according to one of the preceding claims, characterized by a regulation unit (60), which is provided for regulating a flow rate of the exhaust air stream (18).

12. Cooking appliance (10) with at least one cooking appliance device according to one of the preceding claims.

13. A method for operating a cooking appliance device, in particular according to one of claims 1 to 11, comprising a catalyst unit (30), which is intended to influence at least one chemical reaction in an exhaust air stream (18), characterized in that of an induction heating unit (20) heat energy is transmitted by means of a heat transfer unit (40) to the catalyst unit (30).