DE102010030392A1 - Arrangement for inductor of induction field for heat generating cooking appliance, has magnetic base network element and carrier for magnetic base network element - Google Patents

Abstract

The arrangement has a magnetic base network element (5) and a carrier for the magnetic base network element, where the carrier has a hollow, in which the base network element is positioned. The carrier has a holding element for holding the base network element in the hollow, by which the holding element is engaged from behind in a retentive manner. An independent claim is also included for a method for mounting a carrier.

Description

The The invention relates to an arrangement with at least one magnetic Inference element and a support for the magnetic return element of an inductor for an inductively operating cooking appliance, which at least one Recess in which the return element can be positioned is. Furthermore, the invention relates to an inductor with a Such an arrangement and an induction hob with a corresponding Inductor. Moreover, the invention relates to a method for equipping a carrier with at least one magnetic return element of an inductor for an inductively operating cooking appliance, wherein the return element is introduced into a depression in the carrier.

From the EP 1 560 462 A2 An inductor with a coil carrier is known. The coil carrier comprises at least one receiving space for at least one magnetic return means, wherein this return means is held in the receiving space such that the receiving spaces are closed by a common cover. In a further embodiment it can be provided that each receiving space is closed with a separate lid.

About that In addition, arrangements are known in which the inference means attached by an adhesive bond to the bobbin can be.

The Attachment of these return elements must be mechanical stable and temperature resistant, as in operation, for example an induction hob corresponding magnetic forces act on these return elements. About that In addition, relatively high temperatures occur during operation, so that Also in this regard, the attachment must withstand.

It Object of the present invention, an arrangement and a Inductor and an induction hob and a method for assembling a To create carrier with a return element at which or in which the attachment of the return elements can be improved on the carrier.

These The object is achieved by an arrangement which has the features according to claim 1, solved. In addition, the task becomes also by an inductor and an induction hob according to the Claims 12 and 13 solved. About that In addition, the invention is also by a method according to the Claim 14 solved.

A inventive arrangement comprises at least one magnetic return element and a carrier for the magnetic return element of an inductor for an inductively operating cooking appliance, wherein the Carrier has at least one recess into which the Return element is positionable. The carrier has at least one holding element for holding the return element in of the depression extending from the bottom of the depression a length greater than the thickness of the return element extends upwards and the return element through the Retaining element is engaged behind. In such an embodiment can thus create a mechanically particularly stable design which are also temperature resistant is. It is no longer necessary to additionally form adhesive compounds, so that in this regard, a cost reduction allows can be. Not least, by such embodiments the arrangement of the assembly are simplified and in particular also the positioning of the return element in the recess be made very precise.

Especially the last advantage also has a positive influence on the functioning the arrangement with respect to the electromagnetic interaction.

Preferably the retaining element extends through a continuous Recess in the retaining element. On the one hand, this makes the retaining element relatively be formed short and with regard to the mechanically stable Holder of the return element in at least two spatial directions be particularly advantageous. On the other hand, this can cause slippage of the inference element in the depression can be avoided and on the other hand also tilting perpendicular to be avoided.

Preferably has the retaining element at its free end a headband on, which is arranged on a retaining pin. This can reach behind especially in mechanically stable manner and above In addition, therefore, the mechanical fastening can be particularly stable be guaranteed.

It can be provided that the headband and the retaining pin are separate parts which can be assembled non-destructively detachable and taken apart again. As a result, both the assembly or a subsequent disassembly for maintenance purposes or for replacement purposes of the return element can be done very quickly. Just when a return element has to be replaced, only this is to be replaced and it does not have the entire arrangement to be replaced. For example, a plug connection between the headband and the retaining pin be provided.

In particularly advantageous embodiment of the headband and the retaining pin, however, integrally formed with each other. As a result, the mechanical stability is particularly high and the long lasting fixing position of the Return element in the well made particularly well.

One Holding element, for example, as a flexible locking element or snap element, in particular each formed in one piece, be designed. For example, a resilient element may be provided be.

It can be provided that a holding element through an opening extends in a magnetic return element and at the exit side from the opening with its free End is bent over so that the bent end of the retaining element the back of the return element engages behind. The bent end then form the headband. The holding element can do this at its through the opening have one free end or at least two free bendable elements, which can be bent separately and in different directions, in this regard, for example, an expandable bracket can be provided. Again, a one-piece design be provided of the retaining element. The retaining pin of such Retaining element is in particular at the bottom of the recess of the carrier arranged.

Especially is provided that the headband after performing of the retaining pin through the recess in the return element formed by deforming the free end of the retaining pin, this being especially true for a one-piece design the retaining element is provided. By this configuration can on the one hand, the introduction of the return element is particularly simple and low in effort into the depression and beyond by the then given situations a specially adapted deformation of the retaining pin to the effect that the holder the return element allows slippage and tilt safe is. Through this individual subsequent design of the retaining clip can then the given requirements with regard to positioning of the return element especially well-suited to the specific recess become. This can also be guaranteed that the junction between the retaining pin and the headband ensures high mechanical stability during operation of the arrangement can be.

Especially Deformation is a thermal forming process, being particularly preferably a melting of at least at its free end Plastic trained retaining pin is provided. This specific Deformation allows for a very cost-effective and precise procedure, and guaranteed on the other hand a particularly fast and situation adapted deformability of the free end. In addition, by this melting also a relatively timely curing and stabilization be ensured of the retaining element.

Preferably is the holding element in the finished assembled state with the Inference element mushroom-shaped. In particular then provided that the retaining pin through the recess in the return element from the bottom of the well completely extends through and on the opposite Side by the cap of the mushroom shape also a very flat-fitting holder results.

Especially the carrier is disc-shaped. He preferably has a plurality of radially oriented recesses, which are each designed to receive a return element are. In particular, the return elements are rectangular designed plate-shaped parts. In particular, these are Inference elements as ferrite at least proportionately having Components designed in particular as plates from a Ferrite material are formed.

The Recesses are arranged on an underside of the carrier and oriented with their receiving openings down, when the assembly is disposed on an inductor. On the opposite Side of the wells and thus almost on the top of the carrier is an induction coil, preferably spiraling winds, arranged. At the top of the carrier can be a Be provided groove through which this induction coil, at least partially, preferably taken over the entire spiral shape is.

Preferably are in each well at least two retaining elements at the bottom of Well formed, of which each one through a recess extends in a return element, wherein the recesses formed on the longitudinal axis of the return element are. The centered holder and particularly stable fixation is thereby ensured. On the other hand, this can also be a very space-minimized design to be created, since neither the depressions widened still changed in length Need to become.

In particular, the carrier is integrally formed, preferably made of plastic. Thereby can be made possible a very weight-saving and cost-effective design.

One Inventive inductor for a heat inductively producing cooking appliance comprises an inventive Arrangement or an advantageous embodiment thereof.

One Induction hob according to the invention comprises a Inventive inductor or an advantageous Embodiment thereof.

at a method according to the invention for loading a carrier with at least one magnetic return element an inductor for an inductively operating cooking appliance, the magnetic return element is in a depression introduced in the carrier. At the carrier is at least one Holding element for holding the return element in the Well formed, wherein the retaining element from the bottom of the Recess over a length larger the thickness of the return element extends upwards and the return element by the holding element on the Bottom of the recess facing away from the return element holding behind.

Especially is provided that when inserting the return element in the recess, the holding element by a recess in the Return element is guided and subsequently the free end of the retaining element deformed by heating is, so that a headband is formed, which has larger dimensions than the recess, and the return element at the bottom of the recess holding away from the top. Through this production of the subject matter according to the invention may be a particular ensures precise and mechanically stable support become. Additional, relatively heavy items, like full closing lids will be in terms of their Functionality of a holder is no longer needed. In addition, it is no longer necessary adhesive compounds to design, after which facilitates the assembly and faster and more precise. Wrong or positional Sticking and the like can be avoided.

By doing in a preferred embodiment, continuous holes are provided in the return element, through which extend the holding elements formed in advance in the recess, The positioning of the return elements can be extremely be achieved precisely and with minimal tolerances. This has a particularly advantageous effect on the installation as well as on the basic Functionality of the arrangement, so that in this regard too the functionality of the inductor and the induction hob can be improved.

Further Features of the invention will become apparent from the claims, the figures and the description of the figures. The above in the description mentioned features and feature combinations as well as in the Character description mentioned feature and feature combinations and / or the features and combinations of features shown alone in the figures are not only in the specified combination, but also in suitable for other combinations or in isolation, without the To leave frame of the invention.

One Embodiment will be described below with reference to schematic Drawings explained in more detail. Show it:

1 a schematic representation of an induction hob with a controller for controlling the induction heating;

2 a sectional view through an embodiment of an induction hob according to the invention;

3 a perspective view from below of an embodiment of a carrier of an inventive arrangement; and

4 a view from below of an embodiment of an inventive arrangement in which inference elements in recesses in the carrier according to 3 are shown in their assembled final state.

In The figures are the same or functionally identical elements with the provided the same reference numerals.

In 1 is an induction hob 1 with a control unit 2 shown, which for controlling an induction heating and thus for controlling the heating power for a preparation vessel 3 which may be, for example, a saucepan or the like serves. The induction hob 1 has a hob plate 4 on, which is formed of glass ceramic. On the hob plate 4 are four induction cooking zones 5 characterized. At their positions are located under the hob plate 4 one inductor each 6 , For adjusting the induction heating power of the inductors 6 is at a front 7 the hob plate 4 an input unit 8th arranged the input elements 9 for adjusting the induction heating and display elements.

In 2 is a partial sectional view of an induction hob in a schematic longitudinal sectional view 1 shown. It is on a cooking zone on the hob plate 4 another preparation vessel 3 ' , For example, a pan, positioned. At the opposite underside of the hob plate 4 is an arrangement 10 arranged. This arrangement 10 is an inductor 6 assigned and includes a plastic formed one-piece carrier 11 , The carrier 11 has on its upper side a spiral circumferential groove 12 on, which for receiving a likewise spiral-shaped induction coil 13 is trained. For simplicity, only a groove cross-section with the reference numeral 12 and only a cross section of the induction coil with the reference numeral 13 each marked, in the illustration according to 2 the multiple cuts through the spiral groove 12 and the spiral induction coil 13 are shown. The spiral turn extends in a plane perpendicular to the plane of the figure and thus in a plane parallel to the hob plate 4 ,

On one of the hob plate 4 opposite bottom of the carrier 11 are formed a plurality of radially and rectangularly oriented recesses, wherein in the sectional view shown only one recess 14 can be seen. In this depression 14 is a magnetic return element 15 arranged, which is formed as a rectangular plate and is formed of a ferrite material. The return element 15 is in operation of the induction hob 1 for the electromagnetic interaction with the induction coil 13 formed, whereby heat is generated inductively and the preparation vessel 3 ' is heated.

The return element 15 is in the embodiment by two holding elements in the receiving space or the recess 14 of the carrier 11 held. The in the 2 not to be recognized holding elements are integral with the carrier element 11 trained and extend from the ground 16 the depression 14 in the y-direction vertically downwards and have a length in this regard, which is greater than the thickness d of the return element 15 , The return element 15 in the exemplary embodiment has two continuous holes which, with respect to the longitudinal axis which extends in the x-direction, of the return element 15 are formed on this longitudinal axis. The holding elements thus extend through the return element 15 through and are designed to be the return element 15 on the floor 16 the depression 14 opposite side 17 of the inference element 15 attack on this and thus starting from its bottom extension in the recess of this return element 15 holding behind.

The carrier 11 includes a central and centrally formed central area 18 through which a sensor 19 extends, and by means of which the temperature of the hob plate 4 is detectable. In addition, by means of the temperature sensor 19 also the temperature of the inductor 6 be recorded.

In 3 is a perspective view from below of the carrier 11 shown. In this context, its flat-building disk-shaped configuration can be seen. The carrier 11 is, as already mentioned, integrally made of plastic and in 3 in its initial state before assembly with the inference elements 15 shown. In the embodiment shown are seven wells 14 . 20 . 21 . 22 . 23 . 24 and 25 formed, which are positioned in the direction of rotation equidistant to each other and are radially outwardly extending. The wells 14 . 22 to 25 are, as already mentioned, rectangular and open at the bottom.

Each of the wells 14 . 20 to 25 has two holding elements, the further explanation with reference to the holding elements 26 and 27 in the depression 14 is explained. In an analogous manner, the arrangement and further assembly in the wells 20 to 25 educated. The two retaining elements 26 and 27 extend, as already mentioned, in a vertical direction from the ground 16 the depression 14 path. Starting from the in 3 shown representation is then in the depression 14 as shown in 4 a rectangular plate-shaped return element 15 used. The return element 15 has along its central longitudinal axis A two continuous recesses 28 and 29 in the form of holes through which the holding elements 26 and 27 extend through. Based on this achieved assembly state, in which the holding elements 26 and 27 still form as complete retaining pins, these still extend over a certain height over the top 17 of the inference element 15 time. Because the retaining elements 26 and 27 are also made of plastic, they can be relatively easily deformed by melting. This is done accordingly, so that the free ends of the retaining pins of the retaining elements 26 and 27 be deformed by melting, so that in this headband 26a and 27a be generated. The headband 26a and 27a thereby have dimensions that are greater than the dimensions of the recesses 28 and 29 so that the inference element 15 at the top 17 is behind and no longer from the depression 14 can fall out. This procedure becomes a holding element 26 a mushroom-shaped element is formed, which extends through the recesses 28 and 29 extending retaining pin has at the then the cap-shaped headband 26a considered in the longitudinal direction of the holding element 26 what for example in 2 the y-direction is, connects and this has a greater radial width than the pin. In a corresponding manner, the retaining element 27 deformable, so that here too a mushroom-shaped element after the melting of the free end is formed and thereby also a cap-like configuration of a retaining clip 27a he follows.

In an analogous manner, this is also the case of the depressions 20 to 25 formed, which also can be seen from below according to the partial view that the respective return elements 30 . 31 and 32 in appropriate execution in the respective wells 20 . 21 and 22 are attached.

It can also be provided that the spiral groove 12 is not formed completely circumferential, but that only partial sections of the spiral-shaped induction coil 13 are received in such a groove. For example, this is in 4 shown in the top view from below on the carrier 11 in which the already mounted induction coil is free. The induction coil 13 is preferably covered with an insulating layer, which serves for thermal and electrical insulation.

The holding elements 26 . 27 can also be in another embodiment and position on or in a depression 14 . 20 to 25 be arranged. What is essential is that they extend as relatively small elements and a return element accommodated in an associated depression 15 at the back 17 hold in the background.

LIST OF REFERENCE NUMBERS

1

Induction hob

2

control unit

3, 3 '

preparation vessel

4

Hotplate

5

Induction cooking zones

6

inductor

7

front

8th

input unit

9

input elements

10

arrangement

11

carrier

12

groove

13

induction coil

14 20, 21, 22, 23, 24, 25

deepening

15

Return element

16

ground

17

page

18

Central area

19

sensor

26 27

retaining elements

26a, 27a

headband

28 29

recesses

30 31, 32

Return elements

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1560462 A2 [0002]

Claims (15)

Arrangement with at least one magnetic return element ( 5 . 30 . 31 . 32 ) and a carrier ( 11 ) for the magnetic return element ( 5 . 30 . 31 . 32 ) of an inductor ( 6 ) for an inductively operating cooking appliance ( 1 ), the carrier ( 11 ) at least one depression ( 14 . 20 to 25 ), in which the inference element ( 5 . 30 . 31 . 32 ), characterized in that the carrier ( 11 ) at least one retaining element ( 26 . 27 ) for holding the inference element ( 5 . 30 . 31 . 32 ) in the depression ( 14 . 20 to 25 ), by which the retaining element ( 26 . 27 ) is holding behind. Arrangement according to claim 1, characterized in that the retaining element ( 26 . 27 ) from the ground ( 16 ) of the depression ( 14 . 20 to 25 ) by a continuous recess ( 28 . 29 ) in the inference element ( 5 . 30 . 31 . 32 ). Arrangement according to claim 1 or 2, characterized in that the retaining element ( 26 . 27 ) at its free end a headband ( 26a . 27a ), which on a retaining pin of the holding element ( 26 . 27 ) is arranged. Arrangement according to claim 3, characterized in that the retaining bracket ( 26a . 27a ) and the retaining pin are integrally formed. Arrangement according to claim 4, characterized in that the retaining bracket ( 26a . 27a ) after passing the retaining pin through the recess ( 28 . 29 ) in the inference element ( 5 . 30 . 31 . 32 ) is formed by deforming the free end of the retaining pin. Arrangement according to claim 5, characterized in that that the deformation is a thermal molding process, in particular a melting of at least at its free end of plastic trained holding pin is. Arrangement according to one of the preceding claims, characterized in that the retaining element ( 26 . 27 ) in the finished assembled final state with the inference element ( 5 . 30 . 31 . 32 ) is mushroom-shaped. Arrangement according to one of the preceding claims, characterized in that the carrier ( 11 ) is disk-shaped and a plurality of radially oriented recesses ( 14 . 20 to 25 ) for each plate-shaped return element ( 5 . 30 . 31 . 32 ) having. Arrangement according to one of the preceding claims, characterized in that in each recess ( 14 . 20 to 25 ) at least two retaining elements ( 26 . 27 ) on the ground ( 16 ) of the depression ( 14 . 20 to 25 ) are formed, of which each one through a recess ( 28 . 29 ) in a conclusion element ( 5 . 30 . 31 . 32 ), wherein the recesses ( 28 . 29 ) on the central longitudinal axis (A) of the inference element ( 5 . 30 . 31 . 32 ) are formed. Arrangement according to one of the preceding claims, characterized in that the carrier ( 11 ) in one piece, in particular made of plastic. Arrangement according to one of the preceding claims, characterized in that one with the inference element ( 5 . 30 . 31 . 32 Electromagnetically interacting coil ( 13 ) on the carrier ( 11 ) is arranged. Inductor for a heat inductive cooking appliance ( 1 ), which has an arrangement ( 10 ) according to one of the preceding claims. Induction hob with an inductor ( 6 ) according to claim 12. Method for equipping a carrier ( 11 ) with at least one magnetic return element ( 5 . 30 . 31 . 32 ) of an inductor ( 6 ) for an inductively operating cooking appliance ( 1 ), in which the inference element ( 5 . 30 . 31 . 32 ) into a depression ( 14 . 20 to 25 ) in the carrier ( 11 ), characterized in that on the support ( 11 ) at least one retaining element ( 26 . 27 ) for holding the inference element ( 5 . 30 . 31 . 32 ) in the depression ( 14 . 20 to 25 ) is formed, wherein the return element ( 5 . 30 . 31 . 32 ) by the retaining element ( 26 . 27 ) is engaged behind. A method according to claim 14, characterized in that when inserting the inference element ( 5 . 30 . 31 . 32 ) on the ground ( 16 ) of the depression ( 14 . 20 to 25 ) formed retaining element ( 26 . 27 ) through a recess ( 28 . 29 ) in the recoil element ( 5 . 30 . 31 . 32 ) and subsequently the free end of the retaining element ( 26 . 27 ) is deformed by heating, so that a headband ( 26a . 27a ) is formed which larger dimensions than the recess ( 28 . 29 ) and the inference element ( 5 . 30 . 31 . 32 ) at the bottom ( 16 ) of the depression ( 14 . 20 to 25 ) facing away from the top ( 17 ) holds.

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