EP3603331A1

EP3603331A1 - Domestic appliance

Info

Publication number: EP3603331A1
Application number: EP18717417.2A
Authority: EP
Inventors: Juan Jose Galindo Perez; Carlos Obon Abadia; Alvaro RIGUAL ITURRIA; Pablo RUIZ ARNAL
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2017-03-20
Filing date: 2018-03-09
Publication date: 2020-02-05
Also published as: WO2018172878A1; CN110402613B; US11533791B2; ES2682522A1; US20190373685A1; ES2682522B1; CN110402613A

Abstract

The invention relates to a domestic appliance comprising a fixing unit (12a-e) which is intended to at least partially fix a planar unit (14a-e) to a base unit (16a-b). In order to provide a generic appliance having improved properties in respect of efficiency, it is proposed that the fixing unit (12a-e) in at least one assembled state allows a limited movement of at least part of the planar unit (14a-e) relative to the base unit (16a-b) in a movement direction (18a-b) at least substantially parallel to a main plane of extension of the planar unit (14a-e).

Description

HOUSEHOLD APPLIANCES DEVICE

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

For example, induction ovens are known from the prior art, which have a flat induction heating unit, which is immovably fixed to a muffle by means of a rivet and / or screw connection. Such immovable fixing of the induction heating unit, however, results in stresses in the induction heating unit during a heating operation, particularly due to thermal deformation of the induction heating unit and the muffle, on the one hand increasing a material load and on the other hand reducing heating power due to a changed distance between the induction heating unit and the muffle.

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

The invention is based on a household appliance device, in particular a cooking device device, with a fixing unit which is provided to fix a planar unit to a basic unit at least partially and in particular to at least a large part.

It is proposed that, in at least one assembled state, the fixing unit allow a limited movement of at least a part, in particular of at least a large part, of the flat unit relative to the base unit in a direction of movement which is at least substantially parallel to a main extension plane of the flat unit. This configuration can provide a home appliance device having improved properties in terms of efficiency, particularly, assembly efficiency, maintenance efficiency, material efficiency, power efficiency, and / or cost efficiency. In addition, in particular an advantageous flexibility, in particular a mounting flexibility and / or a flexible attachment can be achieved. Furthermore, advantageously, operational reliability and / or reliability can be improved. In addition, advantageous component deformations and / or component loads, For example, component tensions and / or component wear can be avoided, which in particular a service life and / or fatigue strength can be improved.

In this context, a "household appliance device" is to be understood as meaning, in particular, at least one part, in particular a subassembly, of a domestic appliance Advantageously, the household appliance is designed as a cooking device, in particular as a hob, as a grill device, as a microwave and / or preferably as an oven The domestic appliance is also designed as an induction cooking appliance, in particular as an induction hob, as an induction grill, as an induction microwave and / or particularly preferably as an induction baking oven be understood equipped. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state. In addition, a "major part of an object" is to be understood as meaning in particular a part of the object which is at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85% and particularly advantageously at least 95% of a volume and / or one Furthermore, the term "at least a large part" should in particular be understood to mean at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85% and particularly advantageously at least 95%.

A "basic unit" should also be understood to mean, in particular, a unit which defines and / or forms at least a part and preferably at least a large part of the domestic appliance Advantageously, the basic unit is designed as a carrier unit and provided in particular for the planar unit and particularly advantageously further Furthermore, a "planar unit" is to be understood here as meaning, in particular, a unit formed, in particular, separately from the basic unit, which is intended to perform at least one function, in particular with the domestic appliance, in at least one operating state. The function can be any function, such as a bearing function, an insulating function, an insulation function, a lighting function, a heat conduction function and / or a heating function. Furthermore, the term "areal" should in particular be understood to mean an object in which a largest side surface of a The smallest, in particular imaginary, cuboid, which just completely encloses the object, is at least 50%, advantageously at least 100%, preferably at least 200%, and particularly preferably at least 500% larger than any side surface of the wall arranged perpendicular to the largest side surface Cuboid is. In addition, a "fixing unit" in this context should be understood as meaning, in particular, a unit which is advantageously designed at least partially by the flat unit and / or the base unit and which is intended to connect the basic unit and the flat unit to one another, in particular by force - and / or positively and advantageously by means of at least one rivet connection, at least one bayonet connection, at least one latching connection, a plug connection and / or at least one screw connection.For this purpose, the fixing unit advantageously at least one fixing element and preferably a plurality of fixing elements, which in particular to an at least partial fixation the two-dimensional unit and the basic unit can work together.

Furthermore, a "limited movement" should be understood to mean, in particular, a movement in at least one direction of movement, which is restricted to a predetermined, advantageously rectilinear, movement distance, in the direction of movement Advantageously, the movement distance is determined by a shape, size, orientation and / or arrangement In addition, a "main extension plane" of an object should be understood to mean, in particular, a plane which is parallel to a largest side surface of a smallest, in particular imaginary, cuboid which just completely encloses the object, and which in particular passing through a center, in particular a geometric center of the cuboid. Furthermore, the term "at least substantially parallel" should be understood to mean in particular an orientation of a direction relative to a reference plane and / or a reference direction, in particular in a plane, wherein the direction relative to the reference plane and / or reference direction is a deviation, in particular less than 8 ° , Advantageously less than 4 ° and particularly advantageously less than 2 °.

In particular, in order to achieve a high degree of flexibility, in particular a high flexibility of movement, and / or to minimize vibrations and / or component stresses caused, in particular, by thermal expansion, it is proposed that a maximum distance of movement of the part of the planar unit relative to the basic unit in the direction of movement at least 1 mm, preferably at least 2 mm and advantageous at least 3 mm, and / or at most 10 mm, preferably at most 7 mm and advantageously at most 5 mm. A "maximum movement distance" is to be understood in particular as meaning a maximum value of a movement distance of the restricted movement permitted by the fixing unit.

Furthermore, it is proposed that the fixing unit in the mounted state, a limited movement of at least a first further part, in particular at least a first further major part of the flat unit relative to the base unit in a direction of the main plane of the flat unit at least substantially parallel and of the Direction of movement allows various other direction of movement. As a result, in particular flexibility, in particular flexibility of movement and / or mobility, can be increased, and / or vibrations, component stresses and / or component deformations can be reduced. In particular, the first further part of the planar unit and the part of the planar unit may be identical. Preferably, however, the first further part of the planar unit is at least partially different from the part of the planar unit. Preferably, the further direction of movement is arranged at least substantially perpendicular to the direction of movement. In particular, a maximum movement distance of the first further part of the planar unit relative to the base unit in the further direction of movement is at least 1 mm, preferably at least 2 mm and advantageously at least 3 mm and / or at most 10 mm, preferably at most 7 mm and advantageously at most 5 mm , In this context, the expression "at least substantially perpendicular" is intended in particular to define an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, an angle, in particular between 82 ° and 98 °, advantageously between 85 ° and 95 ° and more preferably between 88 ° and 92 °.

In addition, it is proposed that the fixing unit in the mounted state, a second further part of the planar unit, in particular in the direction of movement and / or the other, different in particular from the part of the planar unit and the first further part of the planar unit Movement direction, at least substantially fixed. In this way, in particular a movement of the flat unit can be advantageously controlled. The term "at least substantially fix" should in particular be understood to mean a fixation in at least one direction with a maximum movement distance of at most 0.5 mm, advantageously at most 0.2 mm and particularly preferably at most 0.1 mm. In a further embodiment of the invention, it is proposed that the fixing unit is provided to fix the planar unit to the base unit in a fixing direction oriented perpendicular to the main extension plane of the flat unit. As a result, in particular an advantageously efficient, in particular independent of the limited movement, fixation can be achieved. In particular, the fixing unit is provided to control a minimum distance of the planar unit to the base unit, in particular to limit and advantageously at least substantially constant. In particular, the fixing unit can fix the planar unit in the fixing direction with clearance, in particular of at most 2 mm, preferably of at most 1 mm, advantageously of at most 0.5 mm and particularly preferably of at most 0.25 mm, to the basic unit. However, the fixing unit is advantageously provided for fixing the flat unit in the fixing direction in a form-fitting manner to the base unit. In this context, an "at least substantially constant distance" should be understood in particular to mean that a maximum value of the minimum distance is greater than or equal to 50%, in particular not more than 25%, advantageously not more than 10% and particularly preferably not more than 5% a minimum value of the minimum distance.

In particular, in order to increase operational safety, it is proposed that the fixing unit consists at least partially of an electrically insulating material, in particular a plastic and / or advantageously a mica material. In this case, at least one surface layer of the fixing unit preferably comprises at least a large part and preferably completely of the electrically insulating material. Furthermore, the surface layer of the fixing unit can in particular consist at least partially of a material which reduces a static friction and / or a sliding friction.

In addition, it is proposed that the fixing unit is at least partially formed integrally with the base unit. In this way, in particular a high stability and / or an advantageous assembly efficiency 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 However, all the components of the object are preferably formed integrally with at least one component of the further object, in this context "integral" should in particular at least cohesively be understood connected and / or trained with each other. The material bond can be produced for example by an adhesive process, a Anspritzprozess, a welding process, a soldering process and / or another process. Advantageously, it should be understood to be integrally formed in one piece and / or in one piece. 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, in order to enable a high efficiency and / or safety of a movement restriction, it is proposed according to a further embodiment of the invention that the planar unit at least a first stop element, in particular a first movement restricting element, and the fixing at least one second stop element associated with the first stop element, in particular a second movement limiting element, which cooperate to a movement restriction of the flat unit. In particular, the first stop element and the second stop element cooperate to limit the movement of the part of the planar unit and / or of the first further part of the planar unit relative to the base unit in the direction of movement and / or the further direction of movement. Advantageously, a stop of the first stop element on the second stop element causes the movement restriction. The first stop element is preferably formed as a recess in the planar unit and comprises at least one part of the flat unit delimiting the recess. The second stop element is preferably formed bolt-shaped and advantageously arranged such that the second stop element penetrates the first stop element in at least one mounted state in the fixing direction. At least one, in particular exactly one, first stop element and at least one, in particular exactly one, corresponding and in particular play-free and / or positively enclosed by the first stop element second stop element act together for at least substantially fixation of the second part of the planar unit ,

It is further proposed that the planar unit has a plurality, in particular at least three, advantageously at least four, preferably at least five and particularly preferably at least six spaced apart first stop elements, in particular first movement limiting elements, which with respect to a size, a shape and / or a Alignment are designed differently. This can In particular, a movement advantageously controlled and / or aligned. In this case, the fixing unit in particular a plurality, in particular at least three, advantageously at least four, preferably at least five and more preferably at least six, in particular the first stop elements associated, second stop elements, in particular second movement restriction elements, which are advantageous in terms of size, shape and / or an orientation at least substantially identical to each other are formed. In this case, the first stop elements are preferably designed as recesses in the planar unit and comprise at least one part of the flat unit delimiting a respective recess, so that a size, a shape and / or an orientation of the first stop elements with an orientation and / or a maximum Movement distance of the limited motion of the planar unit is correlated relative to the basic unit. In particular, in order to enable a uniform and / or reliable control of the limited movement, the first stop elements are advantageously arranged distributed in the fixing direction over the entire flat unit. Furthermore, the second stop elements are preferably arranged distributed in the fixing direction over the entire base unit.

Furthermore, it is proposed that the household appliance device has the basic unit which is designed as a muffle wall, preferably an oven muffle wall and advantageously an induction baking oven muffle wall. In this way, in particular, an advantageously efficient and / or flexible household appliance with a cooking space can be realized.

In addition, it is proposed that the household appliance device has the flat unit which is designed as a heating unit, in particular a heating conductor unit and advantageously an induction heating unit. In this way, in particular, an advantageously efficient heating can be achieved. In this case, the flat unit may preferably have at least one, advantageously helically wound, heating element, in particular a heating conductor and advantageously an inductor, and / or at least one, preferably connected to the heating element and in particular flat, insulating element. The insulation element is designed in particular as a thermally insulating and / or advantageously electrically insulating insulation element.

In order to improve operational safety and / or operational control, it is further proposed that the household appliance device has at least one temperature sensor which is connected to the fixing unit. Advantageously, the temperature sensor is thermally coupled to the basic unit and advantageous in the region of the second part of arranged flat unit. Advantageously, the temperature sensor is provided for detecting, measuring and / or determining a temperature of the basic unit in at least one operating state.

Further advantages emerge from the following description of the drawing. In the drawing, five 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.

Show it:

1 shows a part of an example of an induction baking oven designed household appliance with a household appliance device, which comprises a fixing unit, in an exploded view,

2 is a plan view of a basic unit of the household appliance device in a disassembled state,

3 is a sectional view of a part of the basic unit and a part of the fixing unit in a disassembled state,

Fig. 4 is a sectional view of the part of the basic unit, a part of a flat

Unit of the household appliance device and a part of the fixing unit in an assembled state,

5 shows the further part of the fixing unit in the assembled state in a perspective view,

6 is a plan view of a further embodiment of a

Household appliance device with a part of a fixing unit,

7 shows a further exemplary embodiment of the household appliance device with a part of a fixing unit in a perspective view,

Fig. 8 shows another embodiment of the household appliance device with a part of a fixing unit in a perspective view and

Fig. 9 shows another embodiment of the household appliance device with a part of a fixing unit in a perspective view.

FIG. 1 shows a schematic representation of at least part of a household appliance 10a designed as a cooking appliance by way of example. The household appliance 10a is designed as an oven, in the present case in particular as an induction oven. alternative could be a household appliance 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, be formed. In principle, a household appliance could also be designed as a further, in particular electrical, alternative and / or additionally gas-operated and / or oil-operated household appliance. Furthermore, a household appliance could be provided to perform a cleaning operation and / or a cooking process and / or to support and / or food, especially under controlled conditions to keep.

The household appliance 10a comprises a household appliance device. The household appliance device comprises a muffle 1 1a designed as oven muffle. The muffle 1 1a is cuboidal. The muffle 1 1a is intended to limit a cooking chamber 13a. For this purpose, the muffle 1 1 a on several Muffelwandungen. In addition, the household appliance 10a comprises an outer housing (not shown) and a device closure element (not shown). In the present case, the device closure element is designed as a device flap. The device closure element is intended to close the cooking chamber 13a. Alternatively, a muffle could define several areas, for example cooking chambers and / or storage rooms. Furthermore, a device closure element could also be designed as a device door.

In addition, the household appliance device has a base unit 16a. The basic unit 16a is formed at least substantially flat. The base unit 16a is formed as one of the muffle walls. In the present case, the base unit 16a is designed as an induction baking chamber muffle wall. Further, the basic unit 16a is formed as a carrier unit. In the present case, the base unit 16a is arranged above the cooking chamber 13a and is therefore arranged above the cooking chamber 13a, viewed in the gravitational direction, in particular in an assembled state. Furthermore, a main extension plane of the basic unit 16a is arranged perpendicular to the gravitational direction.

Alternatively, a base unit could be designed as one, in particular electrical and / or thermal insulation unit, as a Dämmeinheit, as a, in particular electrical and / or magnetic, shielding, as a storage unit, as a heating unit, as a lighting unit and / or as a housing unit be. It is also conceivable, a basic unit in an assembled state in the gravitational direction below and / or to arrange laterally of a cooking chamber. Furthermore, a main extension plane of a basic unit could be aligned parallel or angled to the gravitational direction.

Furthermore, the household appliance device comprises a planar unit 14a. The planar unit 14a is designed as a heating unit, in the present case in particular an induction heating unit. The planar unit 14a has two insulation elements 15a, 17a. The insulation elements 15a, 17a are formed flat. Furthermore, the insulation elements 15a, 17a limit the planar unit 14a to the outside. The insulation elements 15a, 17a are provided to provide an electrical insulation of the planar unit 14a. The planar unit 14a also has at least one inductor (not shown). The inductor is flat. The inductor is arranged between the insulation elements 15a, 17a. Furthermore, the inductor is connected to the insulation elements 15a, 17a. In the mounted state, the planar unit 14a is arranged on the base unit 16a.

The planar unit 14a has at least one first stop element 24a, 26a, 28a. In the present case, the planar unit 14a comprises a plurality, exemplarily sixteen, first stop elements 24a, 26a, 28a, wherein in particular only three of the first stop elements 24a, 26a, 28a are provided with reference numerals in FIG. The first stop elements 24a, 26a, 28a are spaced from each other. The first stop elements 24a, 26a, 28a are arranged distributed perpendicular to a main extension plane of the planar unit 14a over the flat unit 14a. The first stop elements 24, 26a, 28a are each formed as a recess in the flat unit 14a and comprise at least one part of the flat unit 14a delimiting the corresponding recess. In the present case, the first stop elements 24a, 26a, 28a have the same shape, size and shape. In addition, the first stop elements 24a, 26a, 28a are circular.

Alternatively, a planar unit could be formed as a heating unit differently formed by an induction heating unit, for example, a resistance heating unit. Basically, it is also conceivable that a flat unit as a particular electrical and / or thermal insulation unit, as a Dämmeinheit, as a, in particular electrical and / or magnetic, shielding, as a storage unit, as a carrier unit, as a lighting unit and / or is formed as a housing unit. Furthermore, the planar unit could have one of two different number of insulation elements. It is also conceivable that a flat unit comprises one of sixteen different numbers of first stop elements. In addition, a flat unit could have first stop elements which enclose recesses only to a large extent.

Furthermore, the household appliance device comprises a fixing unit 12a. The fixing unit 12a is designed in several parts. The fixing unit 12a is formed at least partially integrally with the base unit 16a. The fixing unit 12a is at least partially made of an electrically insulating material. The fixing unit 12a is at least intended to fix the flat unit 14a to the base unit 16a. The fixing unit 12a is provided to fix the planar unit 14a in a fixing direction 22a to the base unit 16a. The fixing unit 12a is further provided to keep a minimum distance of the flat unit 14a to the base unit 16a at least substantially constant. In the present case, the fixing unit 12a fixes the planar unit 14a to the base unit 16a in the fixing direction 22a in a form-fitting manner.

The fixing unit 12a comprises a plurality of, in the present case sixteen, fixing subunits 23a, 25a, 27a, wherein in FIG. 1, for the sake of clarity, only three of the fixing subunits 23a, 25a, 27a are provided with reference numerals. The fixing subunits 23a, 25a, 27a are at least substantially identical. The fixing sub-units 23a, 25a, 27a are at least partially formed integrally with the base unit 16a. The fixing subunits 23a, 25a, 27a cooperate to fix the flat unit 14a to the base unit 16a. The fixing sub-units 23a, 25a, 27a are arranged at a distance from one another. The Fixieruntereinheiten 23a, 25a, 27a are formed in the present case as screw. Alternatively, a fuser unit could have one of sixteen different numbers of fuser subunits. Furthermore, at least one fixing subunit of the fixing subunits and / or all fixing subunits could be designed as a riveted connection, as a bayonet connection, as a latching connection and / or as a plug connection. In principle, it is also conceivable that at least one fixing subunit is designed as a one-piece connection, in particular a soldered connection and / or a welded connection.

A fixing subunit 23a of the fixing subunits 23a, 25a, 27a and a first fixing element 38a of first fixing elements 38a, 40a, 42a will now be described in more detail below with reference to FIGS. 3 to 5, the following description, in particular on the basis of at least a large part identical construction of the Fixing sub-units 23a, 25a, 27a, also on the other fixing subunits 25a, 27a and first fixing elements 40a, 42a can be adopted.

The fixing subunit 23a has a first fixing element 38a. The first fixing element 38a is designed as a bolt-shaped element. A longitudinal extent of the first fixing element 38a is arranged parallel to the fixing direction 22a in the mounted state. The first fixing element 38a is integrally connected to the base unit 16a. In the present case, the first fixing element 38a is welded to the base unit 16a. In this case, the first fixing element 38a has, at an end facing the base unit 16a, a head part 41a, which is welded to the base unit 16a. The first fixing element 38a also has an external thread 39a on an end facing away from the base unit 16a. Alternatively, a fixing unit, a fixing subunit and / or a first fixing element could be formed separately from a basic unit. Furthermore, the fixing unit could be partially glued and / or soldered to the base unit. Furthermore, a fixing subunit could have a plurality of first fixing elements. It is also conceivable that a first fixing element is designed as a rivet, as a latching element, as a spring element, as a stop element and / or as an internally threaded element.

Furthermore, the fixing subunit 23a has a second fixing element 44a. The second fixing element 44a is formed separately from the first fixing element 38a. The second fixing element 44a is made of the electrically insulating material. The second fixing element 44a is designed as a disk element, in particular as a washer. In the assembled state, the second fixing element 44a completely surrounds the first fixing element 38a. In addition, the second fixing element 44a contacts the flat unit 14a in the mounted state. The second fixing element 44a contacts the planar unit 14a at a contact surface which is arranged parallel to a main extension plane of the second fixing element 44a and / or the flat unit 14a. Alternatively or additionally, a fixing unit, a fixing subunit and / or a second fixing element may consist of a thermally insulating material. Furthermore, a second fixing element could be formed integrally with a first, in particular integrally formed with a base unit, fixing element or be identical to the first fixing element. In addition, a second fixing element could be designed as a rivet, as a bolt element, as a latching element, as a spring element, as a stop element, and / or as a threaded element, advantageously internal thread element, for example nut, and / or external thread element, for example screw element. In principle, it is also conceivable that a fixing unit, a fixing subunit and / or a second fixing, in particular at least one surface layer of the second fixing element, at least on a standing in contact with a flat unit part consists of a static friction and / or a sliding friction reducing further material.

In addition, the fixing subunit 23a has a third fixing element 52a. The third fixing element 52a is formed separately from the second fixing element 44a in the present case. Further, the third fixing member 52a is formed separately from the first fixing member 38a. In the present case, the third fixing element 52a is formed as a nut. The third fixing element 52a is arranged in the mounted state on the first fixing element 38a, in particular the external thread 39a. The second fixing element 44a and the third fixing element 52a cooperate in the assembled state to fix the planar unit 14a to the base unit 16a in the fixing direction 22a. The third fixing element 52a is provided for transferring a compressive force in the fixing direction 22a to the second fixing element 44a. In addition, the second fixing element 44a is provided to transmit the pressure force to the flat unit 14a. Alternatively, a third fixing element could be formed as a rivet, as a latching element, as a spring element, as a stop element, and / or as a threaded element other than a nut, for example a screw element. In addition, a second fixing element and / or a third fixing element could have a rectangular or oval contact surface.

Furthermore, in the present case, the fixing unit 12a has at least one second stop element 30a, 32a, 34a associated with the first stop element 24a, 26a, 28a. In the present case, the fixing unit 12a comprises a plurality of, by way of example sixteen, second stop elements 30a, 32a, 34a, wherein in the figures in particular only three of the second stop elements 30a, 32a, 34a are provided with reference numerals. The second stop elements 30a, 32a, 34a are spaced from one another when viewed in the fixing direction 22a. In the present case, the second stop members 30a, 32a, 34a are formed the same in size, shape and orientation.

Furthermore, each of the Fixieruntereinheiten 23a, 25a, 27a exactly on a second stop member 30a, so that the following description is again limited to the Fixieruntereinheit 23a, but in principle can also be applied to the other Fixieruntereinheiten 25a, 27a. The fixing subunit 23a has the second stopper member 30a. The second stop element 30a and the first fixing element 38a are identical in the present case. The second stopper member 30 a is as a Movement restriction element formed. Furthermore, in the mounted state, the second stop element 30a penetrates the first stop element 24a associated with the second stop element 30a in the fixing direction 22a. Alternatively, at least one second stop element could be formed differently from a first fixing element. Further, a fuser unit could have one of sixteen different numbers of second stop members.

Moreover, in the mounted state, the fixing unit 12a allows a limited movement of the flat unit 14a relative to the base unit 16a in a direction of movement 18a at least substantially parallel to the main extension plane of the flat unit 14a. Furthermore, in the mounted state, the fixing unit 12a allows a limited movement of the flat unit 14a relative to the base unit 16a in a further movement direction 20a at least substantially parallel to the main extension plane of the flat unit 14a. The direction of movement 18a and the further direction of movement 20a are arranged perpendicular to one another. In addition, the limited movement is formed as a movement on a linear movement path. In the present case, a different thermal expansion of the base unit 16a and the flat unit 14a causes a movement of the flat unit 14a and the base unit 16a relative to each other. Due to the limited movable mounting of the flat unit 14a relative to the base unit 16a, it is thus possible to advantageously avoid stresses and / or deformations of the flat unit 14a and at the same time achieve a consistent arrangement of the flat unit 14a on the base unit 16a. A maximum moving distance of the planar unit 14a relative to the base unit 16a in the direction of movement 18a and in the further direction of movement 20a in the present case is at least 2 mm and at most 7 mm.

In order to achieve this limitation of movement, the first stop elements 24a, 26a, 28a and the second stop elements 30a, 32, 34a cooperate in the present case. In each case, in each case one of the first stop elements 24a, 26a, 28a cooperates with a corresponding second stop element 30a, 32, 34a assigned to the first stop element 24a, 26a, 28a. In the present case, a stop of the first stop elements 24a, 26a, 28a on the second stop elements 30a, 32, 34a causes the movement restriction. Furthermore, the limited movement is predetermined by an arrangement, shape, size and orientation of the first stop elements 24a, 26a, 28a and the second stop elements 30a, 32a, 34a. Alternatively, a fixing unit could include a limited movement of a part of a flat unit relative to a Allow basic unit in only one direction of movement. In addition, a movement distance could be formed differently from a straight-line movement path, for example as a curved movement path. In principle, it is also conceivable that a cause different from a thermal expansion, for example a mechanical force, causes a movement of a planar unit relative to a basic unit.

FIG. 6 shows a further exemplary embodiment of the invention. The reference numeral of the embodiment of Figure 6 is the letter b adjusted. The further embodiment of Figure 6 differs from the previous embodiment, at least substantially by a configuration of a flat unit 14b.

In the present case, a fixing unit 12b allows, in at least one mounted state, a limited movement of at least a part of the planar unit 14b relative to a base unit 16b in a movement direction 18b at least substantially parallel to a main extension plane of the planar unit 14b and at least a first further part of the planar one Unit 14b relative to the base unit 16b in a direction of extension to the main plane of the flat unit 14b at least substantially parallel and from the direction of movement 18b different further direction of movement 20b. Moreover, in the mounted state, the fixing unit 12b fixes a second further part of the planar unit 14b relative to the base unit 16b. In the assembled state, the fixing unit 12b fixes the second further part of the planar unit 14b relative to the base unit 16b in the direction of movement 18b and the further direction of movement 20b.

The planar unit 14b comprises by way of example nine first stop elements 24b, 26b, 28b. The first stopper members 24b, 26b, 28b are formed differently in size, shape, and orientation. The first stop elements 24b, 26b, 28b are arranged distributed in a matrix-like manner over the planar unit 14b in a fixing direction 22b.

In addition, the fixing unit 12b comprises nine second stop elements 30b, 32b, 34b assigned to the first stop elements 24b, 26b, 28b. The second stopper members 30b, 32b, 34b are formed the same in size, shape and orientation. The second stop elements 30b, 32b, 34b are arranged distributed in a matrix-like manner in the fixing direction 22b via the base unit 16b. The second stop members 30b, 32b, 34b are integrally connected to the base unit 16b. A first stop element 24b of the first stop elements 24b, 26b, 28b is mounted without clearance to a corresponding second stop element 30b of the second stop elements 30b, 32b, 34b. The first stop element 24b is circular. The first stop element 24b and the second stop element 30b cooperate to fix the second further part of the planar unit 14b relative to the base unit 16b in the direction of movement 18b and in particular additionally in the further direction of movement 20b.

Further, further first stop elements 26b, 28b of the first stop elements 24b, 26b, 28b are mounted with play associated with further second stop elements 32b, 34b of the second stop elements 30b, 32b, 34b. The further first stop elements 26b, 28b are elongated or circular in the present case, wherein in particular a diameter of the further first stop elements 26b, 28b is greater than a diameter of the further second stop elements 32b, 34b. The further first stop elements 26b, 28b are provided, together with the other second stop elements 32b, 34b, a limited movement of the flat unit 14b, in particular the part of the flat unit 14b and the first further part of the flat unit 14b, relative to the base unit 16b to allow.

In the present case, one of the further first stop elements 26b is provided to allow a limited movement of the flat unit 14b relative to the base unit 16b in the direction of movement 18b, while another of the other first stop elements 28b is provided for a limited movement of the flat unit 14b relative to the base unit 16b in the further direction of movement 20b.

FIG. 7 shows a further exemplary embodiment of the invention. The reference numeral of the embodiment of Figure 7 is the letter c adjusted.

In the present case, the household appliance device has a temperature sensor 36c, which is connected to the fixing unit 12c. The temperature sensor 36c is formed as an electronic temperature sensor. For example, the temperature sensor 36c is formed as a resistance temperature sensor. For this purpose, the temperature sensor 36c has a resistance wire 56c. The resistance wire 56c has a temperature-dependent ohmic resistance. The resistance wire 56c is provided with a electrically insulated cable insulation 58c enclosed. Further, the resistance wire 56c is fixed to a first fixing member 38c with two third fixing members 52c, 53c. Advantageously, the temperature sensor 36c is arranged in the region of a second further part of a planar unit 14c. Furthermore, the temperature sensor 36c is in particular thermally coupled to the basic unit 16c. The temperature sensor 36c is provided to detect, measure and / or determine a temperature of the basic unit 16c in at least one operating state. Alternatively, however, a temperature sensor could also be embodied as any temperature sensor known per se and deviating from a resistance temperature sensor.

FIG. 8 shows a further exemplary embodiment of the invention. The reference numeral of the embodiment of Figure 8 is followed by the letter d. The further embodiment of Figure 8 differs from the previous embodiment, at least substantially by a configuration of a fixing unit 12d.

In the present case, a fixing subunit 23d of the fixing unit 12d has a first fixing element 38d designed as a threadless bolt element. The first fixing element 38d has a notch 64d. The notch 64d is disposed in a middle portion of the first fixing member 38d disposed between a first end and a second end.

Furthermore, the fixing subunit 23d has a third fixing element 52d designed as a latching element. The third fixing element 52d has two wings 60d, 62d. The wings 60d, 62d snap into the notch 64d when assembled. Further, the wings 60d, 62d fix the third fixing member 52d in a fixing direction 22d. A first wing end 61d of a first wing 60d of the wings 60d, 62d faces away from the first fixing element 38d. Furthermore, a second wing end 63d of a second wing 62d of the wings 60d, 62d faces away from the first fixing element 38d. The wings 60d, 62d are intended to exert a compressive force in the fixing direction 22d on a second fixing element 44d.

FIG. 9 shows a further exemplary embodiment of the invention. The reference numeral of the embodiment of Figure 9 is followed by the letter e. The further embodiment of Figure 9 differs from the previous embodiment, at least substantially by a configuration of a fixing unit 12e. In the present case, a fixing subunit 23e of the fixing unit 12e has a first fixing element 38e designed as a threadless bolt element. The first fixing element 38e has a notch 64e. Furthermore, the fixing subunit 23e has a third fixing element 52e designed as a latching element. The third fixing element 52e has two wings 60e, 62e. The wings 60e, 62e snap into the notch 64e when assembled. Further, the wings 60e, 62e fix the third fixing member 52e in a fixing direction 22e. The wings 60e, 62e are intended to exert a compressive force in the fixing direction 22e on a second fixing element 44e.

The notch 64e forms a surface of the unit 14e facing part of the first fixing element 38e. A first wing end 61 e of a first wing 60 e of the wings 60 e, 62 e faces the first fixing element 38 e. The first wing end 61e of the first wing 60e latches into the notch 64e in an assembled state. Further, a second wing end 63e of a second wing 62e of the wings 60e, 62e faces the first fixing member 38e. The second wing end 63e of the second wing 62e engages in the mounted state in the notch 64e.

Reference number household appliance

muffle

fuser

oven

flat unit

insulation element

basic unit

insulation element

movement direction

fixing direction

Fixieruntereinheit

stop element

Fixieruntereinheit

stop element

Fixieruntereinheit

stop element

temperature sensor

fixing

external thread

fixing

headboard

fixing

resistance wire

cable insulation wing

wing tip

wing

wing tip

notch

Claims

1. Household appliance device with a fixing unit (12a-e), which is intended to at least partially fix a flat unit (14a-e) on a base unit (16a-b), characterized in that the fixing unit (12a-e) in a limited movement of at least one part of the planar unit (14a-e) relative to the base unit (16a-b) in a direction of movement (18a-b) at least substantially parallel to a main extension plane of the flat unit (14a-e) allowed.

2. Household appliance device according to claim 1, characterized in that a maximum movement distance of the part of the planar unit (14a-e) relative to the base unit (16a-b) in the direction of movement (18a-b) is at least 1 mm.

3. Household appliance device according to claim 1 or 2, characterized in that the fixing unit (12a-e) in the mounted state, a limited movement of at least a first further part of the flat unit (14a-e) relative to the base unit (16a-b) in a further direction of movement (20a-b) that is at least substantially parallel to the main extension plane of the planar unit (14a-e) and that is different from the direction of movement (18a-b).

4. Household appliance device according to one of the preceding claims, characterized in that the fixing unit (12b) in the mounted state at least substantially fixed a second further part of the planar unit (14b) relative to the base unit (16b).

5. Household appliance device according to one of the preceding claims, characterized in that the fixing unit (12a-e) is provided, the planar unit (14a-e) in a direction perpendicular to the main extension plane of the flat unit (14a-e) aligned fixing direction (22a -e) to the base unit (16a-b).

6. Household appliance device according to one of the preceding claims, characterized in that the fixing unit (12a-e) consists at least partially of an electrically insulating material.

7. Household appliance device according to one of the preceding claims, characterized in that the fixing unit (12a-e) is at least partially formed integrally with the base unit (16a-b).

8. Household appliance device according to one of the preceding claims, characterized in that the planar unit (14a-e) at least one first stop element (24a-b) and the fixing unit (12a-e) at least one second stopper member (24a-b) associated second Stop element (30a-e) which cooperate to a movement restriction of the flat unit (14a-e).

9. Household appliance device according to one of the preceding claims, characterized in that the planar unit (14b) has a plurality of spaced-apart first stop elements (24b, 26b, 28b) which are formed differently with respect to a size, a shape and / or an orientation.

10. Household appliance device according to one of the preceding claims, characterized by the basic unit (16a-b), which is formed as a muffle wall.

1 1. Household appliance device according to one of the preceding claims, characterized by the planar unit (14a-e), which is designed as a heating unit.

12. Household appliance device according to one of the preceding claims, characterized by at least one temperature sensor (36c) which is connected to the fixing unit (12c).

13. Household appliance with at least one household appliance device according to one of the preceding claims.