AU2019291363B2

AU2019291363B2 - Induction cooking device

Info

Publication number: AU2019291363B2
Application number: AU2019291363A
Authority: AU
Inventors: Juan Jose Galindo Perez; Pablo Jesus Hernandez Blasco; Izaskun JACA EQUIZA; Ignacio Lope Moratilla; Damaso Martin Gomez; Alvaro RIGUAL ITURRIA
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2018-06-21
Filing date: 2019-05-24
Publication date: 2022-04-07
Anticipated expiration: 2039-05-24
Also published as: EP3811732A1; EP3811732B1; AU2019291363A1; ES2971822T3; ES2736074A1; WO2019243923A1

Abstract

The invention relates to an induction cooking device (10a-b), in particular an induction oven device, comprising at least one induction heating unit (12a-b), which has at least one induction heating line (14a-b) with a plurality of induction heating line elements (16a-b) that are wound in the longitudinal direction (18a-b) of the induction heating line (14a-b) in an azimuthal and radial manner. The aim of the invention is to provide a generic device with improved properties with respect to its structure. This is achieved in that at least the majority of at least one of the induction heating line elements (16a-b) consists at least partly of at least one edge material that has at least one metal in at least one edge region (20a-b) of the induction heating line element (16a-b).

Description

1/25

Induction cooking device

The present invention relates to an induction cooking appliance apparatus and a method for producing an induction cooking appliance apparatus.

The prior art already discloses an induction cooking appliance apparatus which has an induction heating unit having an induction heating line. The induction heating line has a multiplicity of induction heating line elements which are wound in the longitudinal direction of the induction heating line in an azimuthal and radial manner. Each of the induction heating line elements has a core material which is embodied from a metal and provides an electromagnetic alternating field in one operating state. In addition to the core material, each of the induction heating line elements has in an edge region of the respective induction heating line element an insulation element which is embodied from an enamel and surrounds the core material in a cross-sectional plane which is oriented in a perpendicular manner with respect to a longitudinal direction of the induction heating line. An induction heating unit that is embodied in such a manner has an operating temperature of maximum 200°C in particular on account of the low operating temperature of enamel.

According to a first aspect of the present invention, there is provided an induction cooking appliance apparatus having at least one induction heating unit which has at least one induction heating line having at least 15 induction heating line elements which are wound in the longitudinal direction of the induction heating line in an azimuthal and radial manner, wherein each of at least some of the induction heating line elements comprises at least one edge region, wherein the at least one edge region comprises at least to a large extent at least one edge material which has at least one metal.

According to another aspect of the present invention, there is provided an induction cooking appliance having at least one induction cooking appliance apparatus according to the above aspect.

According to a further aspect of the present invention, there is provided a method for producing an induction cooking appliance apparatus according to the first aspect, said induction cooking appliance apparatus having at least one induction heating unit which has at least one induction heating line having at least 15 induction heating line elements which are

2/25

wound in the longitudinal direction of the induction heating line in an azimuthal and radial manner, wherein each of at least some of the induction heating line elements comprises at least one edge region, wherein the at least one edge region comprises at least to a large extent at least one edge material which has at least one metal.

Some embodiments of the present invention are intended to provide a generic-type apparatus that has improved characteristics with respect to a construction.

The disclosure is based on an induction cooking appliance apparatus, in particular on an induction oven apparatus, having at least one induction heating unit which has at least one induction heating line having a multiplicity of induction heating line elements which are wound in the longitudinal direction of the induction heating line in an azimuthal and radial manner.

It is proposed that at least one of the induction heating line elements is embodied at least in sections in at least one edge region of the induction heating line element at least to a large extent from at least one edge material which has at least one metal.

It is possible in particular by virtue of the embodiment in accordance with the disclosure to realize an advantageous construction. It is possible on account of the azimuthal and radial winding of the induction heating line elements in the longitudinal direction of the induction heating line in particular to compensate at least in part a thermal expansion of the induction heating line elements in the longitudinal direction of the induction heating line elements, whereby it is possible in particular to realize a high degree of mechanical stability of the induction heating element. In particular, it is possible on account of an embodiment of the edge region of the induction heating line element to realize a small thermal expansion of the induction heating line element in the longitudinal direction of the induction heating line and in particular a thermal expansion of the induction heating line element in at least one direction that is oriented in a perpendicular manner with respect to the longitudinal direction of the induction heating line, whereby in particular there is little likelihood of an electrical short circuit occurring between adjacent induction heating line elements. In particular, it is possible to use at least one conventional method for winding the induction heating line onto a coil and/or for winding the induction heating line elements in particular in an azimuthal and radial manner in the longitudinal direction of the induction heating line, whereby in particular it is

3/25

possible to realize a simple and/or rapid assembly procedure. It is possible to realize in particular a high degree of efficiency and in fact in particular with regard to heating at least one of the objects to be heated and/or with regard to costs and advantageously in comparison to at least one induction heating line element which has at least one insulation element in an edge region.

The term "induction cooking appliance apparatus", in particular an "induction oven appliance", is to be understood to mean in particular at least one part, in particular a sub assembly, of an induction cooking appliance, in particular of an induction oven. An induction cooking appliance that has the induction cooking appliance apparatus could be for example an induction grill. In particular, the induction cooking appliance apparatus could be an induction grill apparatus. Alternatively or in addition, an induction cooking appliance that has the induction cooking appliance apparatus could be for example an induction hob. In particular, the induction cooking appliance apparatus could be an induction hob apparatus. It is preferred that an induction cooking appliance that has the induction cooking appliance apparatus is an induction oven. In particular, the induction cooking appliance apparatus is an induction oven apparatus. The term "oven" is to be understood to mean in particular a cooking appliance which has at least one muffle for cooking foodstuffs. For example, the oven could be a baking oven and/or a cooker.

The induction cooking appliance apparatus has in particular at least one muffle which defines and/or delimits at least in part in particular at least one cooking compartment. In particular, the induction cooking appliance apparatus has at least one appliance door which in particular together with the muffle at least essentially and advantageously entirely defines and/or delimits the cooking compartment in at least one operating state. In at least one assembled state, in particular the induction heating line is arranged on the muffle, in particular on at least one muffle wall of the muffle. For example, the induction heating line could be arranged in at least one operating state on at least one muffle side wall of the muffle and/or on at least one muffle rear wall of the muffle. In particular, the induction heating line is arranged in at least one operating state on at least one muffle top wall of the muffle and/or on at least one muffle bottom wall of the muffle. The induction heating line extends in at least one operating state in particular at least to a large extent over at least one muffle wall of the muffle and/or muffle side of the muffle. For example, the induction heating line could be arranged in at least one

4/25

operating state within the cooking compartment. Particularly advantageously, the induction heating line is arranged in at least one operating state outside the cooking compartment.

By virtue of arranging the induction heating line on the muffle, in particular on at least one muffle wall of the muffle, it is possible to realize in particular an efficient embodiment since particularly advantageously electrical losses of the induction heating line are used for a heating procedure which is performed in particular in addition to a procedure of inductively heating the muffle, in particular the muffle wall.

The term "induction heating unit" is to be understood to mean in this context in particular a unit which is provided so as in at least one operating state to supply at least one object that is to be heated with energy, in particular in the form of an electromagnetic alternating field, for the purpose of heating the object that is to be heated, wherein the energy that is supplied to the object that is being heated could be converted into heat in particular in the object that is being heated. In particular, the induction heating line of the induction heating unit is wound onto at least one coil. The induction heating unit could have for example at least two, in particular at least three, advantageously at least four, particularly advantageously at least five, preferably at least six and particularly preferably multiple induction heating lines.

For example, the induction cooking appliance apparatus could have the object that is to be heated. At least one object that is to be heated could be for example a wall, such as for example a muffle wall, and in particular could delimit a cooking compartment at least in part. Alternatively or in addition, at least one object that is to be heated could be in particular an item of ovenware.

The term "induction heating line" is to be understood to mean in particular an object which in at least one operating state conducts electric current and which is provided in particular so as to provide by means of the electric current at least to a large extent energy that is provided by the induction heating line. In particular, in at least one operating state the induction heating line conveys by means of the induction heating line elements, in particular by means of an electric current that is flowing through the induction heating line elements, energy in particular electromagnetic energy to at least one object that is to be heated, and in fact in particular for the purpose of inductively heating the object that is to be heated.

5/25

The induction heating line could have for example a rectangular shape in at least one cross sectional plane which could be oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line. Advantageously, the induction heating line has an oval shape and advantageously a circular shape in at least one cross-sectional plane which is oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line.

At least one induction heating line element of the multiplicity of induction heating line elements could have for example a rectangular shape in at least one cross-sectional plane which could be oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line. Advantageously, at least one induction heating line element of the multiplicity of induction heating line elements has an oval shape and advantageously a circular shape in at least one cross-sectional plane which is oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line. Particularly advantageously, at least a majority of the induction heating line elements and advantageously all of the induction heating line elements are embodied in an identical manner and for this reason here and in the entire following text a characteristic which is described for one of the induction heating line elements of the multiplicity of induction heating line elements likewise applies also for at least a majority and advantageously all further induction heating line elements of the multiplicity of induction heating line elements.

The term "longitudinal direction" of the induction heating line is to be understood to mean in particular a direction which is oriented in a straight winding arrangement of the induction heating line parallel to a longitudinal side of an imaginary smallest geometry cuboid shape which only just encompasses the induction heating line.

The expression that the multiplicity of induction heating line elements is wound in the longitudinal direction of the induction heating line in an "azimuthal" manner, is to be understood to mean in particular that each induction heating line element of the multiplicity of induction heating line elements when considering all cross-sectional planes assumes each angle position precisely once within one longitudinal section of the induction heating line and consequently advantageously passes through an angle region of 3600, wherein in particular two induction heating line elements that are arranged directly adjacent in one of the cross-

6/25

sectional planes are arranged directly adjacent in each of the cross-sectional planes and consequently in particular the induction heating line elements are prevented from overlapping. Particularly advantageously, the induction heating line has a multiplicity of longitudinal sections which are embodied in particular at least essentially in an identical manner to one another and in the longitudinal direction of the induction heating line are in particular directly adjacent to one another and which in particular jointly form a longitudinal extension of the induction heating line.

The expression that the multiplicity of induction heating line elements is wound in the longitudinal direction of the induction heating line in a "radial" manner, is to be understood to mean in particular that when considering all cross-sectional planes within a longitudinal section of the induction heating line, and in particular in the case of a perpendicular projection of the longitudinal section onto a projection plane which is oriented parallel to the longitudinal direction of the induction heating line, each induction heating line element of the multiplicity of induction heating line elements takes up each radial spacing relative to a first position, which the induction heating line element assumes in a first cross-sectional plane, at least once and advantageously twice, in particular with the exception of positions which overlap with lateral delimitations in the cross-sectional plane, wherein in particular two induction heating line elements which are arranged directly adjacent in one of the cross sectional planes are arranged directly adjacent in each of the cross-sectional planes and consequently in particular the induction heating line elements are prevented from overlapping. Particularly advantageously, the induction heating line has a multiplicity of longitudinal sections which are embodied in particular at least essentially in an identical manner with respect to one another and in the longitudinal direction of the induction heating line in particular adjoin one another directly and which in particular jointly form a longitudinal extension of the induction heating line.

If an induction heating line element assumes for example in the first cross-sectional plane a position which overlaps with a lateral delimitation of the induction heating line in the first cross-sectional plane, the induction heating line element together with the lateral delimitation in the projection plane defines an at least essentially isosceles triangle in the case of a perpendicular projection of the longitudinal section onto a projection plane which is oriented parallel to the longitudinal direction of the induction heating line.

7/25

In particular, when considering all the cross-sectional planes within one longitudinal section of the induction heating line, both a spacing of the induction heating line elements relative to a specified position, such as for example relative to a geometric center point and/or center of gravity, and also an angle orientation relative to the specified position in the longitudinal direction of the induction heating line, and in fact in particular for each of the induction heating line elements of the multiplicity of induction heating line elements.

The expression that at least one of the induction heating line elements is embodied "at least in sections" from at least one edge material, is to be understood to mean in particular that the induction heating line element is embodied over a portion of at least 10%, in particular of at least 30%, advantageously of at least 50%, particularly advantageously of at least 70%, preferably of at least 80% and particularly preferably of at least 90% of a longitudinal extension of the induction heating line from the edge material. The term "longitudinal extension" of an object is to be understood to mean in particular an extension in the longitudinal direction of the object. The term "extension" of an object is to be understood to mean in particular a maximum spacing between two points of a perpendicular projection of the object onto one plane.

The term "edge material" of an object is to be understood to mean in particular a chemical compound which has at least two similar chemical elements and/or at least two different chemical elements and in particular is embodied at least to a large extent and advantageously entirely from these elements. The term "edge region" of an object is to be understood to mean a region which starting from a lateral edging of the object in the cross-sectional plane in at least one radial direction which is oriented in the direction at least of a geometric center point and/or center of gravity of the object in the cross-sectional plane, extends in a cross-sectional plane of the object which is oriented in particular in a perpendicular manner with respect to a longitudinal direction of the object, and to mean a region which has in particular a minimum spacing of maximum 25%, in particular of maximum 20%, advantageously of maximum %, particularly advantageously of maximum 12%, preferably of maximum 10% and particularly preferably of maximum 5%, of a maximum extension of the object parallel to the radial direction from the lateral edging of the object in the radial direction.

The term "at least to a large extent" is to be understood to mean in particular a portion, in particular a mass portion and/or a volume portion and/or a substance amount portion and/or a

8/25

portion at least of a chemical element, of at least 50%, in particular of at least 60%, advantageously of at least 70%, particularly advantageously of at least 80%, preferably of at least 90% and particularly preferably of at least 95%.

The phrase that an edge material "has" at least one metal is to be understood to mean in this context in particular that the edge material is embodied with a portion, in particular with a mass portion and/or volume portion and/or substance amount portion, of at least 10%, in particular of at least 15%, advantageously of at least 20%, particularly advantageously of at least 25%, preferably of at least 30% and particularly preferably of at least 35% of the metal. For example, the edge material could be embodied from precisely one material and in particular could have a multiplicity of identical chemical elements. The edge material could be embodied for example exclusively from a metal. Alternatively, the edge material could be embodied from at least two, in particular from at least three, advantageously from at least four and preferably from at least five materials and in particular have a metal compound.

The term "metal compound" is to be understood to mean in particular a chemical compound which is formed by at least two materials of which at least one material is a metal and said metal compound is embodied in particular with a portion, in particular with a mass portion and/or a volume portion and/or a substance amount portion, of at least 10%, in particular of at least 15%, advantageously of at least 20%, particularly advantageously of at least 25%, preferably of at least 30% and particularly preferably of at least 35%, of the metal, and said compound is embodied in particular with a portion, in particular with a mass portion and/or a volume portion and/or a substance amount portion, of the metal of maximum 95%, in particular maximum 90%, advantageously maximum 85%, particularly advantageously maximum 80%, preferably maximum 75% and particularly preferably maximum 70%.

The term "provided" is to be understood to mean in particular specially designed and/or equipped. The phrase that an object is provided for a specified function is to be understood to mean in particular that the object fulfils and/or performs this specified function in at least one application state and/or operating state.

In a further aspect of the disclosure which can be considered on its own or jointly with other aspects of the disclosure, it is proposed that the induction heating unit has a maximum operating temperature of at least 250°C, in particular of at least 300°C, advantageously of at

9/25

least 350°C, particularly advantageously of at least 400°C, preferably of at least 450°C and particularly preferably of at least 500°C. The term "maximum operating temperature" of an object is to be understood to mean in particular a temperature up to which the object is in a functionable state. In particular, the maximum operating temperature of an object is an intrinsic characteristic of the object and in fact is in particular a material characteristic of the object. Advantageously, the maximum operating temperature of an object is defined and/or fixed by at least one melting point of the object. As a consequence, it is possible in particular even at high temperatures to render possible optimal heating and/or a long-lasting embodiment, whereby it is possible in particular to realize a high degree of satisfaction for a user.

For example, a number of at least 10%, in particular of at least 20%, advantageously of at least 30%, particularly advantageously of at least 40%, preferably of at least 50% and particularly preferably of at least 60%, of the induction heating line elements is embodied at least in sections in at least one respective edge region at least to a large extent from the edge material. It is preferred that at least a majority of the induction heating line elements are embodied at least in sections in at least one respective edge region at least to a large extent from the edge material. The phrase "at least a majority" of the induction heating line elements is to be understood to mean in particular a number of at least 70%, in particular of at least %, advantageously of at least 80%, particularly advantageously of at least 85%, preferably of at least 90% and particularly preferably of at least 95% of the induction heating line elements. As a consequence, it is possible in particular to keep storage and/or a diversity of components to a minimum, whereby it is possible in particular to keep costs low and/or to realize a simple production process.

The induction heating line element could be embodied for example over an extension of at least 10%, in particular of at least 20%, advantageously of at least 30%, particularly advantageously of at least 40%, preferably of at least 50% and particularly preferably of at least 60%, of an entire longitudinal extension of the induction heating line in the edge region at least to a large extent from the edge material. It is preferred that the induction heating line element is embodied over at least essentially an entire longitudinal extension of the induction heating line in the edge region at least to a large extent from the edge material. Advantageously, at least a majority of the induction heating line elements are embodied over at least essentially an entire longitudinal extension of the induction heating line in at least one

10/25

respective edge region at least to a large extent from the edge material. The phrase that the induction heating line element is embodied over "at least essentially" an entire longitudinal extension of the induction heating line in the edge region at least to a large extent from the edge material is to be understood to mean in particular that the induction heating line element is embodied over an extension of at least 70%, in particular of at least 75%, advantageously of at least 80%, particularly advantageously of at least 85%, preferably of at least 90% and particularly preferably of at least 95%, of an entire longitudinal extension of the induction heating line in the edge region at least to a large extent from the edge material. As a consequence, it is possible to produce the induction heating line element in particular in a particularly simple and/or cost-effective manner.

Moreover, it is proposed that the edge material has at least to a large extent and in particular exclusively at least one metal and/or at least one metal alloy. In particular, the edge material is embodied at least to a large extent from the metal and/or the metal alloy. In particular, the edge material does not contain any non-metal materials. The edge material is in particular electrically conductive and is advantageously embodied in a different manner to that of an electrical insulator. The term "metal alloy" is to be understood to mean in particular a chemical compound which is formed by at least two metals and which is embodied in particular at least to a large extent from the metals. As a consequence, it is possible in particular to provide a qualitatively high value edge material and/or to forego an insulation material, whereby in particular it is possible to realize a high degree of comfort for a user.

For example, the edge material and a core material of the induction heating line element could be different materials from one another and in particular could be metals. For example, the edge material could be embodied at least to a large extent and in particular exclusively from aluminum and the core material could be embodied at least to a large extent and in particular exclusively from copper. Alternatively for example, the edge material could be embodied at least to a large extent and in particular exclusively from copper and the core material could be embodied at least to a large extent and in particular exclusively from aluminum. It is preferred that the edge material and a core material of the induction heating line element are identical. For example, the edge material and the core material could be embodied at least to a large extent and in particular exclusively from copper and/or from aluminum. In particular, a respective edge material and a respective core material of a respective induction heating line element are identical. The term "core material" of an object is to be understood to mean in

11/25

particular a chemical compound which has at least two similar chemical elements and/or at least two different chemical elements and in particular is embodied at least to a large extent and advantageously entirely from these elements. The term "core region" of an object is to be understood to mean in particular a region which in a cross-sectional plane of the object which is oriented in particular in a perpendicular manner with respect to a longitudinal direction of the object starting from a geometric center point and/or center of gravity of the object extends in the cross-sectional plane in at least a radial direction which is oriented in the direction of a lateral edging of the object in the cross-sectional plane, and to mean a region which has in particular from the geometric center point and/or center of gravity of the object in the radial direction a minimum spacing of maximum 25%, in particular of maximum 20%, advantageously of maximum 15%, particularly advantageously of maximum 12%, preferably of maximum 10% and particularly preferably of maximum 5% of a maximum extension of the object parallel to the radial direction. As a consequence, the induction heating line element can be produced in particular in a particularly simpler and/or more cost-effective manner.

Furthermore, it is proposed that the edge material has at least to a large extent and in particular exclusively at least one metal compound and is embodied in particular at least to a large extent from the metal compound. In particular, the edge material is embodied differently from a pure material. As a consequence, it is possible to realize in particular a high degree of flexibility and in fact in particular on account of a multiplicity of material compounds that are available.

For example, the edge material and a core material of the induction heating line element could be embodied from different materials and in particular could not contain at least one common material. It is preferred that the induction heating line element has at least one core material which is embodied at least to a large extent from at least one metal which is part of the edge material which has a metal compound, the induction heating line element being embodied in particular in the edge region at least to a large extent from said edge material. For example, the edge material could be embodied at least to a large extent and in particular exclusively from at least one aluminum compound and the core material could be embodied at least to a large extent and in particular exclusively from aluminum. Alternatively for example, the edge material could be embodied at least to a large extent and in particular exclusively from at least one copper compound and the core material could be embodied at least to a large extent and in particular exclusively from copper. Particularly advantageously, the edge material which

12/25

has the metal compound could be an oxide of the core material and in particular could be produced by oxidation of the core material. As a consequence, it is possible to provide a particularly advantageous construction.

In addition, it is proposed that the edge material which has the metal compound is electrically insulating and in particular has at least one metal oxide. In particular, the metal compound is a metal oxide. The term "electrically insulating" object is to be understood to mean in particular an object which has an electrical conductivity of maximum 10-3 S/m, in particular of maximum 10-4 S/m, advantageously of maximum 10-5 S/m, particularly advantageously of

maximum 106 S/m, preferably of maximum 10- S/m and particularly preferably of maximum -8 S/m. As a consequence, it is possible to prevent a short circuit between adjacent induction heating line elements, whereby in particular it is possible to realize an embodiment which is functionable and/or safe and/or long-lasting.

A core material of the induction heating line element could be embodied for example to a large extent from aluminum. It is preferred that a core material of the induction heating line element and in particular a respective core material of a respective induction heating line element is embodied at least to a large extent from aluminum. As a consequence, it is possible to realize in particular a particularly advantageous embodiment.

Moreover, it is proposed that the induction heating line element and in particular at least a majority of the induction heating line elements have in at least one cross-sectional plane, which is oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line, an in particular respective maximum extension, in particular a diameter, of maximum 1 mm, in particular of maximum 0.9 mm, advantageously of maximum 0.8 mm, particularly advantageously of maximum 0.7 mm, preferably of maximum 0.6 mm and particularly preferably of maximum 0.5 mm. In particular, the induction heating line element and in particular at least a majority of the induction heating line elements have in at least one cross-sectional plane, which is oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line, an in particular respective maximum extension, in particular a diameter, of at least 0.1 mm, in particular of at least 0.15 mm, advantageously of at least 0.2 mm, particularly advantageously of at least 0.25 mm, preferably of at least 0.3 mm

13/25

and particularly preferably of at least 0.4 mm. As a consequence, it is possible to realize in particular a compact embodiment.

In addition, it is proposed that the induction heating line has in at least one cross-sectional plane, which is oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line, a maximum extension, in particular a diameter, of maximum 10 mm, in particular of maximum 9 mm, advantageously of maximum 8 mm, particularly advantageously of maximum 7 mm, preferably of maximum 6 mm and particularly preferably of maximum 5 mm. In particular, the induction heating line has in at least one cross-sectional plane, which is oriented in particular at least essentially in a perpendicular manner with respect to a longitudinal direction of the induction heating line, a maximum extension, in particular a diameter, of at least 1 mm, in particular of at least 1.5 mm, advantageously of at least 2 mm, particularly advantageously of at least 2.5 mm, preferably of at least 3 mm and particularly preferably of at least 3.5 mm. As a consequence, it is possible to realize in particular a compact embodiment.

Moreover, it is proposed that a number of induction heating line elements amounts to at least , in particular at least 20, advantageously at least 30, particularly advantageously at least , preferably at least 50 and particularly preferably at least 60. In particular, a number of induction heating line elements amounts to maximum 500, in particular maximum 400, advantageously maximum 300, particularly advantageously maximum 200, preferably maximum 180 and particularly preferably maximum 150. A number of induction heating line elements is in particular dependent upon a diameter of the induction heating line elements. In particular, a number of induction heating line elements is lower in the case of a larger diameter of the induction heating line elements and in particular higher in the case of a smaller diameter of the induction heating line elements. In the case of a diameter of 0.45 mm of the induction heating line elements, a number of induction heating line elements could amount at least essentially to 27. In the case of a diameter of 0.3 mm of the induction heating line elements, a number of induction heating line elements could amount at least essentially to 61. The term "at least essentially" is to be understood to mean in this context in particular that a deviation differs from a predetermined value in particular by maximum 25%, preferably by maximum 10% and particularly preferably by maximum 5% of the predetermined value. As a consequence, it is possible to select in particular an optimal number of induction heating line elements, whereby it is possible to realize in particular advantageous heating characteristics.

14/25

A particularly advantageous construction can be realized in particular by an induction cooking appliance, in particular an induction oven, having at least one induction cooking appliance apparatus in accordance with the disclosure.

A particularly advantageous induction cooking appliance apparatus, which is characterized in particular by an advantageous construction and/or by optimized heating characteristics and/or by optimized electrical characteristics, can be produced in particular by a method for producing an induction cooking appliance apparatus in accordance with the disclosure, in particular of an induction oven apparatus in accordance with the disclosure which has at least one induction heating unit which has at least one induction heating line having a multiplicity of induction heating line elements that are wound in the longitudinal direction of the induction heating line in an azimuthal and radial manner, wherein at least one of the induction heating line elements is embodied at least in sections in at least one edge region at least to a large extent from at least one edge material which has at least one metal.

The induction cooking appliance apparatus is hereby not to be limited to the above described application and embodiment. In order to fulfil a function mode described herein, it is possible in particular for the induction cooking appliance apparatus to have a number that differs from a number mentioned herein of individual elements, components and units.

Further advantages are apparent in the following description of the drawing. Exemplary embodiments of the disclosure are illustrated in the drawing. The drawing, the description and the claims comprise numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine said features to form expedient further combinations.

In the drawings:

Fig. 1 shows an induction cooking appliance having an induction cooking appliance apparatus in a schematic view,

Fig. 2 shows a section of the induction cooking appliance in a schematic sectional view,

15/25

Fig. 3 shows a longitudinal section of an induction heating line of an induction heating unit of the induction cooking appliance apparatus in a schematic view,

Fig. 4 shows an induction heating line element of the induction heating line in a schematic sectional view and

Fig. 5 shows an induction heating line element of an induction heating line of an induction heating unit of an alternative induction cooking appliance apparatus in a schematic sectional view.

Figure 1 illustrates an induction cooking appliance 42a. For example, the induction cooking appliance 42a could be embodied as an induction hob and/or as an induction grill appliance. In the present exemplary embodiment, the induction cooking appliance 42a is embodied as an induction oven. For example, the induction cooking appliance 42a could be embodied as an induction baking oven and/or as an induction cooker.

The induction cooking appliance 42a has an induction cooking appliance apparatus 10a. The induction cooking appliance apparatus 10a is embodied as an induction oven apparatus. For example, the induction cooking appliance apparatus 10a could be embodied as an induction baking oven apparatus and/or as an induction cooker apparatus.

The induction cooking appliance apparatus 10a has a muffle 44a. The muffle 44a delimits a cooking compartment 46a in part. The muffle 44a essentially delimits the cooking compartment 46a jointly with a cooking appliance door 48a. The induction cooking appliance apparatus 10a has the cooking appliance door 48a.

The induction cooking appliance apparatus 1Oa has in the present exemplary embodiment five muffle walls 50a. Of the numerous available objects, only one is provided with a reference numeral in the figures respectively. The muffle walls 50a are part of the muffle 44a. The muffle walls 50a essentially define jointly with the cooking appliance door 48a the cooking compartment 46a.

One of the muffle walls 50a is embodied as a muffle bottom wall 52a. One of the muffle walls a is embodied as a muffle top wall 54a. One of the muffle walls 50a is embodied as a

16/25

muffle rear wall 56a. Two of the muffle walls 50a are embodied as a muffle side wall 58a, a. Only one of the muffle walls 50a is described below.

The induction cooking appliance apparatus 10a has a user interface 64a for inputting and/or selecting operating parameters (cf. Fig. 1), for example of a heating power and/or of a heating power density and/or of a heating zone. The user interface 64a is provided for displaying a value of an operating parameter to a user.

The induction cooking appliance apparatus 1Oa has a control unit 66a. The control unit 66a is provided so as to perform actions and/or make adjustments in dependence upon operating parameters which are input by means of the user interface 64a. In one operating state, an energy supply to at least one induction heating unit 12a is controlled in a closed-loop manner by the control unit 66a (cf. Figure 2).

In the present exemplary embodiment, the induction cooking appliance apparatus 10a has two induction heating units 12a. Only one of the induction heating units 12a is illustrated in the figures. Alternatively, the induction cooking appliance apparatus 10a could have in particular a different number of induction heating units 12a. For example, the induction cooking appliance apparatus 10a could have precisely a single induction heating unit 12a. Alternatively, the induction cooking appliance apparatus 10a could for example have at least three, in particular at least four, advantageously at least five and preferably multiple induction heating units 12a.

The induction heating units 12a are arranged in one operating state outside the cooking compartment 46a. A lower induction heating unit 12a of the induction heating units 12a is arranged in an installation position below the muffle wall 50a that is embodied as a muffle bottom wall 52a. The lower induction heating unit 12a is arranged on the muffle wall 50a that is embodied as a muffle bottom wall 52a.

An upper induction heating unit 12a of the induction heating units 12a is arranged in an installation position above the muffle wall 50a that is embodied as a muffle top wall 54a. The upper induction heating unit 12a is arranged on the muffle wall 50a that is embodied as a muffle top wall 54a.

17/25

Alternatively, at least one induction heating unit 12a of the induction heating units 12a could be arranged on a muffle wall 50a that is embodied as a muffle side wall 58a, 60a and/or on a muffle wall 50a that is embodied as a muffle rear wall 56a. Only one of the induction heating units 12a is described below.

The induction cooking appliance apparatus 1Oa has per induction heating unit 12a a muffle insulation unit 62a (cf. Figure 2). The muffle insulation unit 62a is provided so as to realize an in particular electrical and/or thermal insulation between the induction heating unit 12a and a muffle wall 50a on which in particular the induction heating unit 12a is arranged. In one operating state, the muffle insulation unit 62a insulates in particular in an electrical and/or thermal manner with respect to one another the induction heating unit 12a and the muffle wall a on which in particular the induction heating unit 12a is arranged. In one operating state, the muffle insulation unit 62a is arranged on a face of the induction heating unit 12a, said face facing the muffle wall 50a.

The muffle insulation unit 62a is embodied in the present exemplary embodiment to a large extent from mica and in fact in particular from synthetic mica. Alternatively or in addition, the muffle insulation unit 62a could be embodied to a large extent from mineral wool, such as for example from basalt, in particular from basalt fibers, and/or from spar and/or from dolomite and/or from diabase and/or from anorthosite and/or from recycled material.

The induction cooking appliance apparatus 1Oa has per induction heating unit 12a an insulation unit 28a (cf. Figure 2). In one operating state, the insulation unit 28a is arranged on a face of the induction heating unit 12a, said face being remote from the muffle wall 50a. The insulation unit 28a is provided so as to realize an in particular electrical and/or thermal insulation of the induction heating unit 12a with respect to an environment. In one operating state, the insulation unit 28a insulates the induction heating unit 12a, in particular in an electrical and/or thermal manner, with respect to an environment. The insulation unit 28a could be embodied for example to a large extent from glass wool and/or from mineral wool.

In the present exemplary embodiment, the induction heating unit 12a has an induction heating line 14a (cf. Figures 3 and 4). The induction heating line 14a is wound in one operating state onto a coil. In one operating state, the induction heating unit 12a provides an electromagnetic

18/25

alternating field by means of the induction heating line 14a and in fact in particular so as to heat the muffle wall 50a on which in particular the induction heating unit 12a is arranged.

In one operating state, the induction heating unit 12a is arranged in the proximity of the muffle wall 50a. In one operating state, the muffle wall 50a which is heated by the induction heating unit 12a can realize an operating temperature of up to 550°C. The induction heating unit 12a has a maximum operating temperature of at least 550°C. The induction heating line 14a of the induction heating unit 12a has a maximum operating temperature of at least 550°C.

The induction heating line 14a has a multiplicity of induction heating line elements 16a. A number of induction heating line elements 16a amounts to twenty in the present exemplary embodiment. The induction heating line 14a has a number of twenty induction heating line elements 16a.

The induction heating line elements 16a are wound in the longitudinal direction 18a of the induction heating line 14a in an azimuthal and radial manner. The induction heating line elements 16a are arranged in an electrically equivalent manner in particular on account of the azimuthal and radial winding.

Figure 3 illustrates a longitudinal section 24a of the induction heating line 14a. The longitudinal section 24a is oriented parallel to a longitudinal direction 18a of the induction heating line 14a. The longitudinal section 24a is defined by a first cross-sectional plane, in which an induction heating line element 16a assumes a specified azimuthal and/or radial position, and by a second cross-sectional plane, which follows on from the first cross sectional plane in the longitudinal direction 18a and in particular lies next to the first cross sectional plane and in which the induction heating line element 16a assumes again the specified azimuthal and/or radial position. In particular, the longitudinal section 24a extends starting from a first cross-sectional plane, in which an induction heating line element 16a assumes a specified azimuthal and/or radial position, and as far as a second cross-sectional plane which follows on from the first cross-sectional plane in the longitudinal direction 18a and in particular lies next to the first cross-sectional plane and in which the induction heating line element 16a assumes again the specified azimuthal and/or radial position.

19/25

A majority of the induction heating line elements 16a and advantageously all the induction heating line elements 16a are embodied in sections in a respective edge region 20a to a large extent from an edge material (cf. Figure 4). The respective edge material has at least one metal. The induction heating line elements 16a are all embodied in an identical manner in the present exemplary embodiment and for this reason only one of the induction heating line elements 16a is described below.

The induction heating line element 16a is embodied over essentially an entire longitudinal extension of the induction heating line 14a in the edge region 20a to a large extent from the edge material. In the present exemplary embodiment, the induction heating line element 16a is embodied over an entire longitudinal extension of the induction heating line 14a in the edge region 20a to a large extent from the edge material.

In the present exemplary embodiment, the edge material has to a large extent and advantageously entirely one metal. The edge material is embodied to a large extent and advantageously entirely from the metal. The edge material does not contain any non-metals. In the present exemplary embodiment, the edge material is embodied to a large extent and advantageously entirely from aluminum.

The induction heating line element 16a is embodied over essentially an entire longitudinal extension of the induction heating line 14a in a core region 22a to a large extent from a core material. In the present exemplary embodiment, the induction heating line element 16a is embodied over an entire longitudinal extension of the induction heating line 14a in the core region 22a to a large extent from the core material.

In the present exemplary embodiment, the core material has to a large extent and advantageously entirely one metal. The core material is embodied to a large extent and advantageously entirely from the metal. The core material does not contain any non-metals. In the present exemplary embodiment, the core material is embodied to a large extent and advantageously entirely from aluminum.

The edge material and the core material of the induction heating line element 16a are identical. The induction heating line element 16a is embodied to a large extent and advantageously entirely from aluminum.

20/25

Alternatively, the induction heating line element 16a could be embodied to a large extent and advantageously entirely from copper. The core material could be embodied to a large extent and advantageously entirely from aluminum. The edge material could be embodied to a large extent and advantageously entirely from aluminum.

In Figure 4, a hypothetical boundary between the edge region 20a and the core region 22a is indicated by a broken line. Since the edge material and the core material of the induction heating line element 16a are identical, the induction heating line element 16a does not have such a boundary.

In one method for producing the induction cooking appliance apparatus 10a, the induction heating line elements 16a are wound in the longitudinal direction 18a of the induction heating line 14a in an azimuthal and radial manner. The induction heating line elements 16a are embodied in the core region 22a to a large extent from the core material which has in particular to a large extent and advantageously entirely at least one metal and preferably is embodied from at least one metal.

The induction heating line elements 16a are embodied in the edge region 20a to a large extent from the edge material which has in particular to a large extent and advantageously entirely at least one metal and is preferably embodied from at least one metal. The edge material and the core material are selected so as to be identical in order in particular to render possible a simple and/or cost-effective production of the induction cooking appliance apparatus 10a.

Figure 5 illustrates a further exemplary embodiment of the invention. The descriptions below are restricted essentially to the differences between the exemplary embodiments, wherein with regard to identical components, features and functions reference can be made to the description of the exemplary embodiment illustrated in Figures 1 to 4. In order to differentiate between the exemplary embodiments, the letter a is replaced in the reference numerals of the exemplary embodiment in Figures 1to 4 by the letters b in the reference numerals in the exemplary embodiment illustrated in Figure 5. With regard to identically referenced components, in particular with regard to components having identical reference numerals, it is fundamentally possible to also refer to the drawings and/or the description of the exemplary embodiment illustrated in Figures 1 to 4.

21/25

Figure 5 illustrates a cross section of an induction heating line element 16a of an induction heating line 14b of an induction heating unit 12b of an alternative induction cooking appliance apparatus 1Ob. The induction heating line element 16b which is described by the exemplary embodiment illustrated in Figure 5 differs from the induction heating line element 16a described by the exemplary embodiment illustrated in Figures 1 to 4 by an edge material of the induction heating line element 16b.

A core material of the induction heating line element 16b is embodied to a large extent and advantageously entirely from a metal. The core material of the induction heating line element 16b is embodied to a large extent and advantageously entirely from aluminum.

The edge material of the induction heating line element 16b has to a large extent and advantageously entirely a metal compound. The edge material of the induction heating line element 16b is embodied to a large extent and advantageously entirely from a metal compound.

The metal from which the core material of the induction heating line element 16b is to a large extent and advantageously entirely embodied is part of the edge material which has a metal compound. The edge material which has the metal compound is embodied in the present exemplary embodiment to a large extent and advantageously entirely from aluminum oxide. The edge material which has the metal compound is electrically insulating.

In one exemplary embodiment, not illustrated, a core material of one induction heating line element of one induction heating line of one induction heating unit could be embodied for example to a large extent and advantageously entirely from copper. An edge material of the induction heating line element could be embodied for example from a copper-nickel compound and/or from a copper-nickel alloy and/or from nickel-plated copper.

22/25

Reference numerals

Induction cooking appliance apparatus 12 Induction heating unit 14 Induction heating line 16 Induction heating line element 18 Longitudinal direction Edge region 22 Core region 24 Longitudinal section 28 Insulation unit 42 Induction cooking appliance 44 Muffle 46 Cooking compartment 48 Cooking appliance door Muffle wall 52 Muffle bottom wall 54 Muffle top wall 56 Muffle rear wall 58 Muffle side wall Muffle side wall 62 Muffle insulation unit 64 User interface 66 Control unit

Claims

23/25 Claims

1. An induction cooking appliance apparatus having at least one induction heating unit which has at least one induction heating line having at least 15 induction heating line elements which are wound in the longitudinal direction of the induction heating line in an azimuthal and radial manner, wherein each of at least some of the induction heating line elements comprises at least one edge region, wherein the at least one edge region comprises at least to a large extent at least one edge material which has at least one metal.

2. The induction cooking appliance apparatus as claimed in claim 1, wherein the induction heating unit has a maximum operating temperature of at least 250°C.

3. The induction cooking appliance apparatus as claimed in claim 1 or 2, wherein at least a majority of the induction heating line elements are embodied at least in sections in at least one respective edge region and comprise at least to a large extent the edge material.

4. The induction cooking appliance apparatus as claimed in any one of the preceding claims, wherein at least one of the induction heating line elements is embodied over at least essentially an entire longitudinal extension of the induction heating line in the edge region and comprises at least to a large extent the edge material.

5. The induction cooking appliance apparatus as claimed in any one of the preceding claims, wherein the edge material has at least to a large extent at least one metal.

6. The induction cooking appliance apparatus as claimed in claim 5, wherein the edge material and a core material of the induction heating line element are identical.

24/25

7. The induction cooking appliance apparatus as claimed in any one of claims 1 to 4, wherein the edge material has at least to a large extent at least one metal compound.

8. The induction cooking appliance apparatus as claimed in claim 7, wherein at least one of the induction heating line elements has at least one core material which comprises at least to a large extent at least one metal which is part of the edge material having a metal compound.

9. The induction cooking appliance apparatus as claimed in claim 7 or 8, wherein the edge material which has the metal compound is electrically insulating.

10. The induction cooking appliance apparatus as claimed in any one of the preceding claims, wherein a core material of the induction heating line element comprises at least to a large extent aluminum.

11. The induction cooking appliance apparatus as claimed in any one of the preceding claims, wherein the induction cooking appliance apparatus is an induction oven apparatus.

12. An induction cooking appliance having at least one induction cooking appliance apparatus as claimed in any one of the preceding claims.

13. The induction cooking appliance according to claim 12, wherein the appliance is an induction oven.

14. Method for producing an induction cooking appliance apparatus as claimed in any one of claims 1 to 11, said induction cooking appliance apparatus having at least one induction heating unit which has at least one induction heating line having at least 15 induction heating line elements which are wound in the longitudinal direction of the

25/25

induction heating line in an azimuthal and radial manner, wherein each of at least some of the induction heating line elements comprises at least one edge region, wherein the at least one edge region comprises at least to a large extent at least one edge material which has at least one metal.

15. The method as claimed in claim 14, wherein the induction cooking appliance apparatus is an induction oven apparatus.

BSH Hausgerste GmbH Patent Attorneys for the Applicant SPRUSON&FERGUSON

42a 64a 66a i I \ I

000 50a 56a --- - - 44a j

50a , 58a-- ��48a -50a, 60a

50a j 52a Fig. 1

10a I I,.,, I 62a 12a 28a �

44a

-50a, 54a

Fig. 2

10a 12a f j

16a (

Fig. 3

10a /_, 14a r 12a i-

f ) .,.---22a ..

Fig. 4