EP2294954A2 - Domestic appliance - Google Patents

Abstract

The house hold appliance, particularly cooking device, has a heat conducting unit (10), which is firmly connected with a heating element (12) in an operating condition. The heat conducting unit has a component (14) with a porosity that is different from zero. An independent claim is also included for a method for manufacturing a heat conducting device, particularly house hold appliance.

Description

The invention relates to a domestic appliance device according to the preamble of claim 1.

From the publication DE 202 15 979 U1 a heat conducting unit is known, which forms a heatable working area. The heat-conducting unit is firmly connected to a heating element.

The object of the invention is in particular to provide a generic device with improved properties in terms of a cost-effective design. The object is achieved by the features of claim 1, while advantageous embodiments and refinements of the invention can be taken from the dependent claims and the independent claim.

The invention is based on a domestic appliance device, in particular cooking appliance device, with at least one first heat-conducting unit, which is firmly connected in at least one operating state with at least one heating element.

It is proposed that the first heat-conducting unit has at least one component with a porosity differing from zero. A "heat-conducting unit" is to be understood in particular as a unit which is intended to conduct heat to an area in which it is used in an operating process, which is preferably a cooking process and / or a cooking process, the unit preferably being at least partially has a higher thermal conductivity than stainless steel and / or as a material from which a cooking surface of the heat conducting unit is formed. By "intended" is intended to be understood in particular specially designed and / or equipped. The fact that the heat-conducting unit is "firmly" connected to a heating element during an operating process should be understood in particular to mean that the heat-conducting unit is fixed in such a way during the operating process that it is immovable relative to the heating element and preferably non-destructively only with a tool Heating element is removable. Particularly preferred here is the heat-conducting unit intended to be disassembled exclusively by a fitter and thus separated from the heating element. A "heating element" is intended in particular to be understood as an element which, in at least one operating process, emits energy for the purpose of heating a unit and preferably food, the element preferably delivering the energy in the form of thermal energy and / or magnetic energy. The "porosity" of a substance is to be understood in particular to mean that physical quantity which is defined as one minus the quotient of a bulk density of the substance and a pure density of the substance. By "bulk density" of a substance is meant in particular a quotient of a mass of an amount of the substance and a volume of the amount of the substance, the volume also including the volumes of pore spaces which the substance forms. By "true density" of a substance is meant, in particular, a quotient of a mass of a non-porous amount of the substance and a volume of the non-porous amount of the substance. With an embodiment according to the invention, a cost-effective design can be achieved. In particular, a structure of the heat-conducting unit can be achieved from at least one material that can be processed flexibly, as a result of which cost-effective manufacturability of the heat-conducting unit can be achieved. Furthermore, it can be achieved, in particular, that a foam can be used in a production of the heat-conducting unit, which can be particularly cost-effective, in particular compared to producing a heat-conducting unit by plating two sheets with an aluminum plate arranged between the sheets, because during production of a sheet according to the invention Wärmeleiteinheit a geometric formation of edge regions by a mold, in which the foam is filled, can be determined in a particularly simple manner.

It is also proposed that the domestic appliance device has at least one component which, in at least one operating state, is in direct material contact with the component. Under the fact that the device is in an operating condition in a "direct material contact" with the component, should be understood in particular that the component rests against the component and / or materially connected thereto and / or a material heat conduction between the component and the component can be done. The heat-conducting unit preferably has the component. As a result, a stable construction and in particular an effective heat conduction can be achieved.

Advantageously, the domestic appliance device has at least one heating element, which is arranged at least partially between the component and the component of the heat-conducting unit. By the fact that the heating element is arranged "at least partially between" the component and the component, should be understood in particular that there is at least one straight line, which the component in a first point, the heating element in a second point and the component in a third Point intersects and the second point lies on the line between the first and the third point. As a result, a high energy efficiency can be achieved. In particular, an energy to be delivered by the heating means can be used effectively. In particular, the energy can be passed on to a large extent by the heat-conducting unit.

Preferably, the domestic appliance device has at least one heating element, which rests against the component and / or the component in at least one operating state. By the fact that the heating element "rests" on the component and / or the component, it should be understood in particular that a direct contact exists between the heating element and the component or the component. As a result, an effective heating can be achieved. In particular, a high efficiency of the heating element and the heat conducting unit can be achieved.

In a preferred embodiment of the invention, the component forms a cooking surface at least partially. A "cooking surface" is to be understood as meaning, in particular, an area which is provided for placing food to be cooked on and for subsequent and / or simultaneous heating of the cooking product. As a result, components can be saved.

It is also proposed that the component at least partially forms at least part of a heat insulation unit. A "heat insulation unit" is to be understood in particular a unit that thermally insulated at least two units against each other, the units are preferably cooking surfaces and the unit the cooking surfaces so thermally insulated from each other, that a first of Gar surfaces with a first cooking temperature and at the same time a second Garflächen with a second cooking temperature are operable. As a result, a simple construction can be achieved.

Preferably, the device is at least partially formed of a stainless steel. Thus, a robust construction can be achieved.

It is also proposed that the component is at least partially formed from a foam. A "foam" is to be understood in particular a solid and / or liquid structural unit, which has gas bubbles which are enclosed by solid or liquid walls of the assembly. As a result, a simple manufacturability can be achieved. In particular, it can be achieved that a part of the heat-conducting unit can be produced by a simple foaming of a gap.
Advantageously, the component is at least partially formed of aluminum, whereby a cost-effective design can be achieved.

Furthermore, it is proposed that the component is plate-shaped, whereby a high-quality heat conduction can be achieved. In particular, it can be achieved that, due to a uniform thickness of the component, the cooking surface is supplied with approximately the same amount of heat at all points.

Preferably, the domestic appliance device has at least one receiving unit, which is arranged at least partially within the first heat-conducting unit. A "receiving unit" is to be understood in particular as a unit which is intended to receive at least one functional means and in particular a sensor unit and preferably a temperature sensor unit. As a result, high functionality can be achieved.

Advantageously, the domestic appliance device has at least one temperature sensor unit which is provided to detect a temperature of at least one region of the first heat-conducting unit. Thus, a high quality cooking can be achieved. In particular, a heat input can be measured precisely.

Preferably, the domestic appliance device has at least one second heat-conducting unit, which differs from the first heat-conducting unit and which is formed at least partially from at least one material having a non-zero porosity. The fact that the second heat-conducting unit differs from the first heat-conducting unit should be understood in particular to mean that the first heat-conducting unit is free is of at least one component which has the second heat-conducting unit. As a result, high functionality can be achieved. In particular, two different Garflächen can be supplied independently of each other effectively with heat from different heating means.

Advantageously, the domestic appliance device has at least one receiving unit, which is arranged at least partially within the first heat-conducting unit. A "receiving unit" is to be understood in particular as a unit within which, in at least one operating state, a functional unit, which in particular has at least one electronic component and is preferably formed by a temperature sensor unit, is accommodated. This allows a high-quality cooking can be achieved. In particular, it can be achieved that a heat supply to the cooking surface can be controlled.

Further, a cooking plate unit is proposed with the home appliance device, whereby a cost-effective design can be achieved.

Furthermore, a Garraummuffeleinheit is proposed with a domestic appliance device. Under a "Garraummuffeleinheit" should be understood in particular a part of a Garraummuffel. This allows a cost-effective design can be achieved.

In addition, a domestic appliance with a domestic appliance device is proposed. Hereby, a cost-effective design can be achieved.

Further, a Wärmeleitvorrichtung manufacturing method is proposed, in particular for the preparation of the domestic appliance device in which at least one foam is used. This allows a cost-effective design and in particular a cost-effective manufacturing process can be achieved.

Preferably, the foam is introduced between at least two plate-shaped components. Thus, a simple manufacturability and in particular a simple shaping of a component can be achieved, which is formed by the foam in particular after a solidification of the foam.

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are 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.

Fig. 1

eine Draufsicht auf ein Teppan-Yaki Grillgerät mit einer erfindungs- gemäßen Hausgerätvorrichtung,

Fig. 2

eine dreidimensionale Ansicht einer Unterseite und zweier Seitenbe- reiche zweier Wärmeleitungseinheiten der Hausgerätvorrichtung,

Fig. 3

einen schematischen III-III-Schnitt durch eine der Wärmeleitungsein- heiten und ein Heizmittel der Hausgerätvorrichtung,

Fig. 4

einen Schnitt durch ein alternatives Ausführungsbeispiel einer Haus- gerätvorrichtung,

Fig. 5

eine dreidimensionale Ansicht einer Unterseite und zweier Seitenbe- reiche zweier Wärmeleitungseinheiten eines alternativen Ausfüh- rungsbeispiels einer Hausgerätvorrichtung,

Fig. 6

ein als Backofen ausgebildetes Hausgerät mit einem alternativen Ausführungsbeispiel einer erfindungsgemäßen Hausgerätvorrichtung,

Fig. 7

eine Draufsicht auf ein alternatives Ausführungsbeispiel einer Wär- meleitungseinheit und einer Wärmeisolationseinheit,

Fig. 8

einen VIII-VIII-Schnitt durch das alternative Ausführungsbeispiel ei- ner Wärmeleitungseinheit und einer Wärmeisolationseinheit und

Fig. 9

einen Schnitt durch ein weiteres alternatives Ausführungsbeispiel ei- ner Wärmeleitungseinheit und einer Wärmeisolationseinheit.

Show it:

Fig. 1

a top view of a Teppan-Yaki grill device with a domestic appliance device according to the invention,

Fig. 2

3 shows a three-dimensional view of an underside and two side regions of two heat conduction units of the domestic appliance device,

Fig. 3

a schematic III-III section through one of the Wärmeleitungsein- units and a heating means of the domestic appliance device,

Fig. 4

a section through an alternative embodiment of a home appliance device,

Fig. 5

3 shows a three-dimensional view of a bottom side and two side regions of two heat conduction units of an alternative embodiment of a domestic appliance device,

Fig. 6

a household appliance designed as an oven with an alternative embodiment of a domestic appliance device according to the invention,

Fig. 7

a top view of an alternative embodiment of a heat conduction unit and a heat insulation unit,

Fig. 8

a VIII-VIII section through the alternative embodiment of a heat conduction unit and a heat insulation unit and

Fig. 9

a section through a further alternative embodiment of a heat conduction unit and a heat insulation unit.

FIG. 1 shows a plan view of a trained as Teppan-Yaki grill appliance domestic appliance, which has a cooking plate unit 28 with a domestic appliance device according to the invention. The domestic appliance device has a heat-conducting unit 10, which is fastened to a housing 30 of the domestic appliance. Furthermore, the domestic appliance device has a heating element 12 designed as a tubular heating element, which is likewise fastened to the housing 30 and relative to which the heating element 12 is immovable. The heat-conducting unit 10 has a solid foam 14 ', designed as an aluminum foam Component 14, which has a non-zero porosity ( FIGS. 1 to 3 ). The foam 14 'is firmly bonded to a component 16 of the heat-conducting unit 10 and a component 18 of the domestic appliance device. In one operating state, the device 16 is disposed over the foam 14 'and completely covers the foam 14' in a plan view. In the operating state, the component 18 is arranged under the foam 14 ', so that the foam 14' is arranged between the components 16, 18. The component 14 has a thickness of eight millimeters. The components 16, 18 each have a thickness of eight hundred microns.

The components 16 and 18 are each formed from a stainless steel sheet and both have planar surfaces 32, 34. In principle, it is also conceivable that the surfaces 32, 24 another shape, such. B. have a curved shape. Furthermore, the foam 14 'is plate-shaped. The foam 14 'and the component 18 have the same maximum longitudinal extension and the same maximum width extension. The heating element 12 is arranged in the operating state under the device 18 and is applied to this. The foam 14 'is formed largely of aluminum. A mass fraction of the foam 14 'of more than fifty percent is formed of aluminum. The mass fraction can also be more than seventy percent, more than ninety percent or more than ninety-nine percent. The device 16 forms with its flat surface 32 a cooking surface 20, which is provided for a placement of food. In principle, it is conceivable that the cooking surface 20 is curved and is formed by a depression.

Furthermore, the domestic appliance device has a second heat-conducting unit 22, which is identical to the heat-conducting unit 10. In the operating state, an upper region of the heat-conducting unit 22 is formed by the component 16. The heat-conducting unit 22 likewise has a component 36 which has a porosity differing from zero and which is formed separately from the component 14. The components 14 and 36 are spaced apart from each other and form a gap 38, which causes a thermal insulation between the two Wärmeleiteinheiten 10, 22. Furthermore, the domestic appliance device has a heat insulation unit 58, which comprises a region 54 of the component 16. The device 16 is made of stainless steel and therefore conducts heat relatively poorly. The region 54 is arranged between the cooking surface 20 and a cooking surface 40, which is formed by the second heat-conducting unit 22, and effects a thermal insulation between the cooking surface 20 and the cooking surface 40. Further, between an edge 52 of the device 16 and the cooking surfaces 20, 40 a region 56 is arranged, which a portion of the heat insulating unit 58 is heated and at a cooking operation in which one or both of the cooking surfaces 20, 40 are heated, remains unheated and has an ambient temperature or only slightly, for. B. by a few degrees Celsius, deviates from the ambient temperature. The area 56 surrounds the cooking surfaces 20, 40.

Furthermore, the domestic appliance device has a receiving unit 48 designed as a tube, which extends from one side of the first heat-conducting unit 10 within the first heat-conducting unit 10 ( FIGS. 1 and 3 ). The receiving unit 48 is embedded in the foam 14 'and touches it. Within the receiving unit 48, a temperature sensor unit 50 is arranged, which measures a temperature of a portion of the first heat-conducting unit 10, which surrounds the receiving unit 48 in an operating operation.

In a thermal conduction manufacturing process, the devices 16 and 18, which are plate-shaped, are arranged parallel to each other at a distance of eight millimeters. At one edge of the component 14 cuboidal shape components are arranged such that they form a cuboid cavity together with the components 16 and 18, in which the receiving unit 48 is introduced and which subsequently with the foam 14 ', which is in a flowable Condition is foamed. Thereafter, the mold components are removed and the foam 14 'solidifies. The components 16, 18 are materially connected to the foam 14 '. The first heat-conducting unit 10 is manufactured in this way. Analogously, the second heat conducting unit 22 is produced. A reworking of the foam 14 'or the components 16, 18 and in particular a reworking of edge regions of the foam 14' or the components 16, 18 is unnecessary. In particular, a reworking of the foam 14 'or the components 16, 18 for the production of the gap 38 is unnecessary.

In the FIGS. 4 to 8 Alternative embodiments are shown. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, however, the reference numerals of the embodiment in the FIGS. 4 to 8 the letters "a", "b" etc. added. The following description is essentially limited to the differences from the embodiment in the FIGS. 1 to 3 in which respect Constant components, features and functions on the description of the embodiment in the FIGS. 1 to 3 can be referenced.

FIG. 4 shows an alternative embodiment of a home appliance device. The domestic appliance device has a heating element 12a designed as a tubular heating element, which is arranged between a component 14a and a component 16a of the domestic appliance device and between the component 14a and a component 18a of the domestic appliance device. In manufacture of the home appliance device, the components 16a and 18a are arranged in parallel and spaced from each other, after which the heating element 12a is inserted between the components 16a, 18a. Subsequently, a gap between the components 16a and 18a, in which the heating element 12a is arranged, is foamed with a flowable foam 14'a, which subsequently solidifies.

FIG. 5 shows an alternative embodiment of a cooking plate unit 28b. A component 16b of the cooking plate unit 28b has a recess 42b at an edge region, which is arranged next to two cooking surfaces 20b, 40b of the cooking plate unit 28b. In producing the cooking plate unit 28b, the component 16b is provided with the recess 42b by deep drawing. Subsequently or before, a foam 14'b is attached to the component 16b.

FIG. 6 shows a domestic appliance with a Garraummuffeleinheit 44 c, which has a home appliance device according to the invention. In one operating state, a component 16c of the domestic appliance device forms a lower limit of a cooking chamber 46c, which the cooking chamber unit 44c forms. The domestic appliance device further forms a bottom heat heating of the oven designed as a household appliance. For this purpose, the domestic appliance device heating elements (not shown), which heat the component 16c and thereby heat the cooking chamber 46c.

FIG. 7 shows a plan view of an alternative embodiment of a heat conducting unit 10d and a heat insulating unit 58d. The heat-conducting unit 10d forms a curved cooking surface 20d. Furthermore, the heat-conducting unit 10d has a component 14d and a component 18d, both of which are curved ( FIG. 8 ).

In the FIG. 9 an alternative embodiment is shown. Substantially identical components, features and functions are basically numbered by the same reference numerals. To distinguish the embodiments, however, the reference numerals of the embodiment in the FIG. 9 added the letter "e". The following description is essentially limited to the differences from the embodiment in the FIGS. 7 and 8 , wherein with respect to the same components, features and functions on the description of the embodiment in the FIGS. 7 and 8 can be referenced.

FIG. 9 shows a section through a further alternative embodiment of a heat conducting unit 10e and a heat insulating unit 58e. The heat-conducting unit 10e has a component 18e, which is designed as a flat plate. The component 18e is fixedly connected to a flat surface 60e of a component 14e of the heat-conducting unit 10e.

reference numeral

10

heat conducting unit

12

heating element

14

component

14 '

foam

16

module

18

module

20

Cooking surface

22

heat conducting unit

28

Garplatteneinheit

30

casing

32

surface

34

surface

36

component

38

gap

40

Cooking surface

42

deepening

44

Garraummuffeleinheit

46

oven

48

recording unit

50

Temperature sensor unit

52

edge

54

Area

56

Area

58

Thermal insulation unit

60

area

Claims (15)

Household appliance device, in particular cooking appliance device, having at least one first heat-conducting unit (10, 22; 10a; 10b, 22b; 10c, 22c; 10d; 10e) which in at least one operating state is fixedly connected to at least one heating element (12; 12a; 12b),
characterized in that
the first heat conducting unit (10, 22; 10a; 10b, 22b; 10c, 22c; 10d; 10e) comprises at least one component (14; 14a; 14b; 14d; 14e) having a non-zero porosity. Domestic appliance according to claim 1,
marked by
at least one component (16, 18; 16a, 18a; 16b, 18b; 16c; 16d; 16e) which in at least one operating condition is in direct physical contact with the component (14; 14a; 14b). Domestic appliance according to claim 2,
marked by
at least one heating element (12a) which is at least partially disposed between the component (16a, 18a) and the component (14a) of the heat-conducting unit (10a). Domestic appliance device according to one of claims 2 or 3,
marked by
at least one heating element (12) which rests in at least one operating state on the component (14) and / or the component (16, 18). Domestic appliance device according to one of claims 2 to 4,
characterized in that
the component (16, 18, 16a, 18a, 16b, 18b, 16d, 16e) at least partially forms a cooking surface (20, 40, 20a, 20d, 20e). Domestic appliance device according to one of claims 2 to 5,
characterized in that
the component (16; 16b; 16c; 16d; 16e) forms at least part of a thermal insulation unit (58; 58b; 58c; 58d; 58e). Domestic appliance device according to one of the preceding claims,
characterized in that
the component (14; 14a; 14b; 14d; 14e) is at least partially formed from a foam (14 ';14'a;14'b;14'd;14'e). Domestic appliance device according to one of the preceding claims,
characterized in that
the component (14; 14a; 14b; 14d; 14e) is formed at least partially from aluminum. Domestic appliance device according to one of the preceding claims,
characterized in that
the component (14; 14a; 14b) is plate-shaped. Domestic appliance device according to one of the preceding claims,
marked by
at least one second heat-conducting unit (22; 22b; 22c) which differs from the first heat-conducting unit (10; 10b; 10c) and which is formed at least partially from at least one material having a non-zero porosity. Domestic appliance device according to one of the preceding claims,
marked by
at least one receiving unit (48), which is at least partially disposed within the first heat-conducting unit (10). Cooking plate unit with a domestic appliance device according to one of the preceding claims. A cooking chamber unit having a domestic appliance device according to any one of claims 1 to 11. A heat conducting device manufacturing method, in particular for manufacturing a home appliance device according to any one of the preceding claims, wherein at least one foam (14 '; 14'a; 14'b; 14'd; 14'e) is used. The thermal conduction manufacturing method according to claim 14,
characterized in that
the foam (14 ', 14'a) is introduced between at least two plate-shaped components (16, 18, 16a, 18a).

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