ES2556999B1 - DOMESTIC DEVICE DEVICE - Google Patents

Abstract

Home appliance device # The invention relates to a home appliance device, in particular, to a cooking appliance device, with one or more supporting elements (10a-10e) and with one or several power supply lines (12a-12e), arranged partially or entirely together with the support element (10a-10e), which comprise one or more protection units (14a-14e) that are provided to provide protection against overcurrent . # In order to increase the efficiency of the home appliance device, it is proposed that the protection unit (14a-14e) have two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) electrically parallel that electrically connect the two or more conductive track sections (20a, 22a, 24a; 20b, 22b, 24b; 20c, 22c, 24c, 26c, 28c; 20d; 20e) the power supply line (12a-12e).

Description

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DOMESTIC DEVICE DEVICE

DESCRIPTION

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

From the state of the art, cooking fields are known which have a printed circuit board and a protection unit, arranged on the printed circuit board, which is intended to protect one or more components against overcurrent.

The invention solves the technical problem of providing a more efficient domestic appliance device. According to the invention, this technical problem is solved by the features of claim 1, while advantageous embodiments and improvements of the invention can be extracted from the secondary claims.

The invention refers to a domestic appliance device, in particular, to a cooking appliance device, with one or several support elements and with one or several power supply lines, partially or entirely arranged adjacent to the and / or on the support element (s), which comprise one or more protection units that are provided to provide protection against overcurrent, where the protection unit (s) have two or more, preferably three or more, so more preferred, four or more, electrically parallel conductive track fuses that directly and / or indirectly electrically connect the two or more conductive track sections of the current supply line or lines.

The term "domestic appliance device" includes the concept of at least one part, namely, a construction subgroup, of a domestic appliance. The domestic appliance device may also comprise the entire domestic appliance. The domestic appliance may be made here as any domestic appliance that is appropriate to a person skilled in the art, such as washing machines, refrigerating apparatus, apparatus for the preparation of beverages and / or, preferably, as a cooking appliance, in in particular, as a cooking oven, steamer, microwave, toaster and / or, particularly preferably, as a cooking field, in particular, as an induction cooking field. The term "support element" includes the concept of an element that has one or more surface areas that are intended to house, support and / or support one or more

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objects. The support element may be composed of any material that is appropriate to a person skilled in the art, preferably, by an electrical insulator, for example, a plastic and / or glass material, partially or in its entirety, preferably largely or in its entirety and, more preferably, completely. The expression "largely or in its entirety" includes the concept of 60% or more, advantageously, 70% or more, preferably 80% or more and, more preferably, 90% or more. In addition, the support element may have any shape that is appropriate to a person skilled in the art, for example, round and / or curved, although preferably it is made approximately or exactly as a plate. Approximately or exactly as a plate ”of an object includes the concept related to an embodiment of the object in which an imaginary minimum parallelepiped that wraps the object with the most extensive side, which is 10 or more times, preferably, 20 or more times, more preferably, 30 or more times and, advantageously, 40 or more times longer than the shorter side of the parallelepiped, preferably, the support element has a thickness and / or thickness of material at least essentially constant you The expression thickness and / or thickness of material of an object "at least essentially constant" includes the concept of a thickness and / or thickness of material that differ from a thickness and / or thickness of average material through the object by 10% at most, preferably, at 5% at most and, more preferably, at 2% at most. In this case, the support element could be made as a glass plate, in particular, as part of a cooking field plate and / or as a cooking field plate. In addition, it is conceived that the support element is a film, preferably a flexible plastic film. However, the support element is preferably made as part of a printed circuit board and is preferably composed of a fiber reinforced epoxy resin, in particular, with glass fibers. In this case, the support element can be made in one layer, in two layers and / or in multiple layers. The term "intended" includes the concept of conceived and / or provided specifically. The expression that an object is intended for a specific function includes the concept that the object satisfies and / or performs this function determined in one or more application and / or operating states. The term "power supply line" includes the concept of a unit that is provided in one of several operating states to establish an electrically conductive connection between two or more points and / or two or more electrical and / or electronic components, preferably between at least one power supply unit and one or several functional units. In one or several operating states, the power supply line is intended to supply power to the functional units. Aqul, the power supply line

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It may comprise one or more electrical lines, one or several electrical cables and / or one or several conductive tracks, which may be arranged next to and / or on the support element. The term "power supply unit" includes the concept of a unit that is provided in one or more operating states to supply energy, specifically, current and / or voltage. The power supply unit can be made here like any other power supply unit that is appropriate to a person skilled in the art such as, for example, connection to the network, phase of a rush, power supply, generator, battery and / or, preferably, as a rectifier and / or inverter The term "functional unit" includes the concept of one or more electrical and / or electronic components. The functional units may be made here as any functional unit that is appropriate to a person skilled in the art such as, for example, one or more semiconductor components, one or more connection elements, one or more actuator elements, one or more lighting elements , one or more sensor elements, in particular a magnetic field sensor and / or a temperature sensor, one or more integrated circuits, one or more motors and / or, preferably, as a control unit, inverter and / or heating unit The term "protection unit" includes the concept of a unit that, in at least one operating state, in particular, in at least one erroneous operating state, is intended to separate and / or bridge at least temporarily and, preferably, permanently, one or more electrically conductive connections between two or more electrical and / or electronic components, preferably between the power supply unit and the functional units, in at least one operating state, in particular, in an operating state Wrong, the protection unit is intended to protect one or more components, preferably, functional units and / or electrical circuits, against an overcurrent of a current intensity greater than 8 A, preferably greater than 10 A, advantageously, greater than 16 A, more advantageously, greater than 20 A, preferably, greater than 25 A and, more preferably, greater than 32 A. As Alternatively, it is conceived that the protection unit is intended to protect one or more electrical and / or electronic components against an overcurrent with a lower current intensity, for example, greater than 0.5 A and / or greater than 1 A The protection unit is made as a protection device against overcurrent, although additionally, embodiments of the protection unit are conceived as a protection device against overvoltage. The erroneous operating state can be triggered by a defect, failure, and / or by the erroneous control of one or more electrical and / or electronic components. The term "conductive track fuse" includes the concept of an element that is formed by a conductive track partially or in its

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whole, preferably, in large or in whole and, more preferably, completely, and which is intended for, in at least one state of operation, specifically, in a state of erroneous operation, to be destroyed by a current, in particular, by an overcurrent and / or to evaporate by overheating, forming a plasma. At least one of the conductive track fuses and / or all conductive track fuses may be composed of any electrically conductive material that is appropriate to a person skilled in the art, such as silver and / or, preferably, copper, partially or in its entirety, preferably, in large part or in its entirety and, more preferably, completely. Preferably, the two or more conductive track fuses are identical to each other and, more preferably, all conductive track fuses are identical to each other. The protection unit is limited here to an area around the two or more conductive track fuses. The term "proximal area" includes the concept of a spatial area whose points have a distance with respect to a reference point of 5 cm maximum, advantageously, 3 cm maximum, preferably 1.5 cm maximum and, more preferably, 1 cm maximum.

Through this form of realization, a more efficient domestic appliance device can be provided, in particular, in relation to the construction space and / or cost efficiency. In comparison with the series conductive track fuses and / or with the fuses for the protection of conventional devices and / or fuses for weak currents, it is possible to reduce the costs and the utilization of space.

Preferably, the two or more conductive track fuses are made as narrow points. The term "narrow point" of an object includes the concept of an area of the object which, in comparison with an area of the object surrounding said area, has a reduced extension and / or thickness of 20% or more, advantageously , in 40% or more, preferably, in 60% or more and, more preferably, in 80% or more, thus providing protection against simple and efficient overcurrent.

If the two or more conductive track fuses do not have layers on top of them, in particular, welding and / or tin resistant lacquer, such conductive track fuses can be destroyed and / or evaporated in a precisely defined temperature range. Likewise, protection against overcurrent that acts quickly can be achieved.

As an alternative, it is proposed that the two or more conductive track fuses present a

additional protective layer, namely, a corrosion protective layer and / or a layer

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anti-dirt, for example, made of oils and / or varnishes, with a destruction temperature lower than that of the two or more conductive track fuses or with the same destruction temperature as the two or more conductive track fuses. The term "destruction temperature" includes the concept of a temperature, in particular, a temperature limit, to which an object, in this case, the protective layer and / or at least one of the two or more conductive track fuses, advantageously, the two or more conductive track fuses and, more preferably, all the conductive track fuses, this one (s) intended to be destroyed and / or evaporated. Thus, the appearance of corrosion can be avoided, and the fatigue resistance and / or the useful life of the domestic appliance device can be increased.

In one embodiment of the invention, it is proposed that the two or more sections of the conductive track be arranged side by side in a layer of the support element (s), at least, in the visual direction perpendicular to the element or elements. of support. In this way, an easy construction protection unit can be provided.

Preferably, at least one of the two or more conductive track sections completely surrounds at least one of the two or more conductive track sections, at least in the visual direction perpendicular to the support element. Thus, it is possible to improve the protective effect and / or reduce the necessary construction space.

In addition, it is proposed that the protection unit (s) extend through two or more different layers of the support element (s). In this case, the protection unit is arranged next to and / or on the layers of the support element. Preferably, the layers are made here as outer layers and / or surfaces of the support element. Alternatively and / or additionally, at least one of the layers may be made as an inner layer and / or intermediate layer of the support element. In this way, efficiency in the construction space can be advantageously increased.

An electrically conductive connection between the two different layers could be established, for example, through one or more cables and / or one or more filaments. However, the protection unit (s) preferably comprise one or more pass-through connections and / or one or several rods and / or one or several vertical electrical connections with respect to the support element, which connect the layers together in a conductive manner. electrically The passage connections can be made here as a through-pass and / or as a blind route. In this way, the protection unit can be arranged so

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advantageously simple next to and / or on two different layers of the support element. In addition, the use of space can be reduced.

In addition, it is proposed that the two or more conductive track fuses directly and / or indirectly electrically connect the passageway or connections with at least one of the two or more conductive track sections. It is conceived that a conductive track fuse is made here as a thermal trap and / or thermal pad of the passage connections. Thus, protection against overcurrent can be obtained advantageously easily.

Likewise, the domestic appliance device could have a protective housing, which surrounded the protection unit partially or in its entirety and the conductive track fuses partially or in its entirety and, preferably, largely or in its entirety , and which was composed of metal, in particular, aluminum and / or, preferably, plastic material, partially or in its entirety, preferably, in large or in whole and, more preferably, completely. Alternatively and / or additionally, it is proposed that the two or more conductive track fuses are arranged next to one side of the support element that in the assembled state this section of multiple electrical and / or electronic components. Such electrical and / or electronic components may be arranged next to and / or on the support element. The expression "surround in large or in whole" includes the concept that an object surrounds another object in 70% or more, preferably in 80% or more and, more preferably, in 90% or more and, even more preferably, completely.In this way, it is possible to protect sensitive electrical and / or electronic components against possible destruction and / or deterioration in the event of an erroneous operating state. .

Other advantages are taken from the following description of the drawing. Five examples of realization of the invention are represented in the drawing. The drawing, description and claims contain numerous features in combination. The person skilled in the art will consider the characteristics advantageously also separately, and will gather them in other reasonable combinations.

They show:

Fig. 1 a domestic appliance made as a cooking field by induction with a domestic appliance device, in schematic top view,

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Fig. 2 a protection unit of a power supply line of the domestic appliance device in a first operating state, in schematic view,

Fig. 3 the protection unit in another operating state,

Fig. 4 a part of a protection unit of a power supply line of another domestic appliance device on a first layer of a support element in a first operating state, in schematic view,

Fig. 5 another part of the protection unit of figure 4 on a second layer of the support element, in schematic view,

Fig. 6 the part and the other part of the protection unit of figures 4 and 5 in view of schematic section along the line VI-VI of figures 4 and 5,

Fig. 7 the part and the other part of the protection unit of figures 4 and 5 in schematic section view along the line VI-VI of figures 4 and 5, in a second operating state,

Fig. 8 a part of a protection unit of a power supply line of another domestic appliance device on a first layer of a support element in a first operating state, in schematic view,

Fig. 9 another part of the protection unit of figure 8 on a second layer of the support element, in schematic view,

Fig. 10 the part and the other part of the protection unit of figures 8 and 9 in schematic section view along the line X-X of figures 8 and 9,

Fig. 11 a part of a protection unit of a power supply line of another domestic appliance device on a first layer of a support element in a first operating state, in schematic view, and

Fig. 12 a part of a protection unit of a power supply line of another domestic appliance device on a first layer of a support element in a first operating state, in schematic view.

Figure 1 shows an example of domestic appliance 38a made as an induction cooking field in schematic top view. In the present case, the domestic appliance 38a has a cooking field plate 40a with four heating zones 42a, and comprises a domestic appliance device. The device of domestic appliance

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It comprises a control unit (not shown), which is intended to direct and / or regulate the heating power. In addition, the domestic appliance device comprises in this case a heating unit (not shown), which is intended to heat a cooking drum supported on the cooking field plate 40a and in this case has one or more heating elements . The domestic appliance device also comprises other functional units, namely, one or more inverters, one or more sources of supply, one or more lighting units, one or more ventilation units, one or more indicating units, one or more motors and / or other functional units that are appropriate to a person skilled in the art. To supply power to the control unit, the heating unit and / or the other functional units, the domestic appliance device also comprises a power supply unit (not shown).

The domestic appliance device comprises a power supply line 12a (see also figure 2), which is provided in the present case to supply power to the heating unit. For this, the power supply line 12a connects the power supply unit with the heating unit, whereby in one or more operating states a current flows through the power supply line 12a. As an alternative, it is also conceived that a domestic appliance device has several power supply units, in particular, at least two and / or at least three power supply units and / or several power supply lines, in particular, at least two and / or at least three power supply lines. It is also conceived that at least one power supply line is intended to supply power to a control unit and / or another functional unit.

In addition, the domestic appliance device comprises a support element 10a, which is made in this case as part of a printed circuit board, is composed of fiber reinforced epoxy resin, and is made of two layers. Figure 2 shows a layer 30a, namely, a lower side, of the support element 10a. The layer 30a of the support element 10a is disposed on an opposite side to the cooking field plate 40a and to multiple electrical and / or electronic components. However, as an alternative it is also conceived that a support element has another number of layers, in particular, three or more layers and / or four or more layers. In addition, a support element could also be made as a cooking field plate.

The power supply line 12a is partially or completely arranged on the support element 10a (see Figure 2). Therefore, the power supply line

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12a is made at least in part as a conductive current supply track 44a, which is composed of copper, and has a width and / or transverse extension of between 4 mm and 20 mm, in this case, approximately 8 mm, and a thickness and / or thickness of material of 35 pm. In addition, the current supply conductive track 44a has a layer resting on it. In this case, the current supply conductive track 44a is largely or entirely covered with weld resistant lacquer.

Also, the power supply line 12a has a protection unit 14a (see Figure 2). The protection unit 14a is arranged on the layer 30a of the support element 10a. Two sections of conductive track 20a, 22a of the current supply line 12a and / or of the conductive track of current supply 44a adjoin here directly with the protection unit 14a. In the operating state, a current flows through the protection unit 14a, which is made as a fuse of the heating unit, although as an alternative it is also conceived that a protection unit is made as a fuse of the power supply and / or fuse of the control unit and / or fuse of another functional unit.

In the present case, the protection unit 14a comprises a conductive track section 24a, which is made identically to the conductive current supply track 44a. Therefore, the conductive track section 24a of the protection unit 14a is made of copper. In addition, the conductive track section 24a of the protection unit 14a has a width and / or transverse extension of approximately 8 mm, a thickness and / or thickness of material of 35 pm, and a length of at least 22 mm. Also, the conductive track section 24a of the protection unit 14a is covered with weld resistant lacquer. The conductive track section 24a of the protection unit 14a and the two conductive track sections 20a, 22a of the current supply conductive track 44a are arranged side by side in the layer 30a of the support element 10a.

In this case, the protection unit 14a also has six conductive track fuses 16a, 18a, which are formed by conductive tracks and made identically to each other. In addition, the conductive track fuses 16a, 18a are made of copper, and arranged on the layer 30a of the support element 10a. Every three conductive track fuses 16a, 18a electrically directly connect the conductive track section 24a of the protection unit 14a with the conductive track sections 20a, 22a of the conductive current supply track 44a. Therefore, every three conductive track fuses 16a, 18a are connected

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electrically in parallel with each other. In addition, the three parallel conductive track fuses 16a are connected in series with the other three conductive track fuses 18a. The conductive track fuses 16a, 18a have a length of approximately 1 mm, and a width and / or transverse extension of between 0.1 mm and 1 mm, in the present case, 0.3 mm. Accordingly, the conductive track fuses 16a, 18a are made as narrow points. The conductive track fuses 16a, 18a have a thickness and / or thickness of material of 35 pm. In addition, the conductive track fuses 16a, 18a do not have layers on top of them, namely, weld-resistant lacquer, and neither do they have tin. The conductive track fuses 16a, 18a are arranged on the layer 30a of the support element 10a, so that in the operating state a current flows through the three electrically parallel conductive track fuses 16a, of the conductive track section 24a of the protection unit 14a, and of the other three electrically parallel conductive track fuses 18a. In this case, the protection unit 14a is formed by the six conductive track fuses 16a, 18a and the conductive track section 24a.

As an alternative, it is conceived that at least one conductive track fuse and / or all conductive track fuses present / have an additional protection unit. On the other hand, it is also conceived that a current supply line present and / or is formed by a different amount of conductive track sections such as, for example, two or more conductive track sections, three or more conductive track sections and / or four or more conductive track sections, which may be connected through two or more conductive fuses in series and / or in parallel, three or more conductive fuses in series and / or in parallel, four or more series and / or parallel conductive track fuses and / or other number of conductive track fuses that is appropriate to a person skilled in the art. In addition, at least one conductive track section and / or at least one conductive track fuse could have a thickness and / or thickness of material of 75 pm.

In the present case, the protection unit 14a is provided to provide protection against overcurrent, whereby conductive track fuses 16a, 18a are made as overcurrent fuses, that is, circuit breakers. The conductive track fuses 16a, 18a are intended to be destroyed if an overcurrent occurs in an erroneous operating state, or to evaporate due to overheating if such an overcurrent occurs, forming a plasma. Accordingly, the conductive track fuses 16a, 18a are provided to separate one or more electrically conductive connections between the power supply unit and the

heating unit if an overcurrent occurs. In the present case, the fuses

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of conductive track 16a, 18a are made as fuses of 16 A, so they are intended to be destroyed if there is a current above 16 A. The destruction and / or total separation of the electrically conductive connection takes place at most 5 ms after the overcurrent occurred. Therefore, the protection unit 14a is provided in this case to protect the heating unit against overcurrent. Figure 3 shows the protection unit 14a after the error state has occurred.

Alternatively and / or additionally, it is conceived that a domestic appliance device has a protective housing that can be composed of plastic material in large or in whole, and which preferably preferably partially or completely surrounds a unit of protection. The protective housing is here provided to provide a volume in which a plasma and / or ions can expand and dilute. In this case, it is also conceived that a protection unit is arranged on another layer, in particular, on an upper side, on one side directed towards a cooking field plate, of the support element.

The domestic appliance 38a shown here, as! as the dimensions, temporal durations and / or current values set forth, are to be understood merely by way of example and in no case constitute a restriction of the invention, but only describe the mode of operation of an example of realization of the device for domestic appliance

Another example of embodiment of the invention is shown in Figures 4 to 7. The following description and drawing are essentially limited to the differences between the examples of embodiment, where, in relation to components indicated in the same way, in particular, in terms of components with the same reference symbols, it can also be basically referred to the drawing and / or to the description of the other embodiment example of figures 1 to 3. For the differentiation of the embodiment examples, the letter "a" has been postponed to the reference symbols of the embodiment example of figures 1 to 3 and In the example of embodiment of figures 4 to 7, the letter "a" has been replaced by the letter "b".

The exemplary embodiment of Figures 4 to 7 differs from the previous exemplary embodiment primarily in an embodiment of a protection unit 14b of a current supply line 12b of another domestic appliance.

Figures 4 to 6 show the protection unit 14b on a first layer 30b, specifically, a lower side, of a support element 10b (see Figure 4), on a second layer 32b, namely, an upper side, of the support element 10b (see

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figure 5), and in representation of lateral section (see figure 6), in a first operating state.

In the present case, the protection unit 14b is partially or completely arranged on the first layer 30b of the support element 10b and on the second layer 32b of the support element 10b. Therefore, the protection unit 14b extends through two different layers 30b, 32b of the support element 10b. The protection unit 14b has two conductive track sections 20b, 22b, which are connected in series. A first conductive track section 20b of the protection unit 14b is disposed on the first layer 30b, and a second conductive track section 22b of the protection unit 14b is disposed on the second layer 32b. In the present case, the first conductive track section 20b of the protection unit 14b is approximately or exactly annular and has an inner diameter of approximately 1 mm and an external diameter of approximately 2 mm. A conductive track section 24b of a conductive current supply track 44b completely surrounds the first conductive track section 20b of the protection unit 14b at least in the visual direction perpendicular to the support element 10b. In addition, the protection unit 14b in this case has four conductive track fuses 16b, which directly electrically connect the conductive track section 24b of the current supply conductive track 44b with the first conductive track section 20b of the protection unit 14b. Therefore, the four conductive track fuses 16b are electrically connected in parallel with each other. The conductive track fuses 16b are arranged on the first layer 30b of the support element 10b, whereby the second layer 32b of the support element 10b does not have conductive track fuses 16b.

The protection unit 14b also has a passage connection 34b, which is connected in series with the conductive track sections 20b, 22b of the protection unit 14b. The passage connection 34b is made as a via, is approximately or exactly cylindrical, and has a diameter of approximately 1 mm. The passage connection 34b is provided to electrically connect the first layer 30b of the support element 10b with the second layer 32b of the support element 10b. In addition, the passage connection 34b is directly electrically connected to the first conductive track section 20b of the protection unit 14b on the first layer 30b of the support element 10b. The first section of conductive track 20b of the protection unit 14b completely surrounds the passage connection

34b at least in the visual direction perpendicular to the support element 10b. Therefore, the

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conductive track fuses 16b indirectly electrically connect the passage connection 34b with the conductive track section 24b of the current supply conductive track 44b. In addition, the passage connection 34b is directly electrically connected to the second conductive track section 22b of the protection unit 14b on the second layer 32b of the support element 10b.

Therefore, in one or more operating states a current flows at least through the four electrically parallel conductive track fuses 16b, of the first conductive track section 20b of the protection unit 14b, of the passage connection 34b, and of the second section of conductive track 22b of the protection unit 14b. Likewise, the protection unit 14b is formed in this case by the four conductive track fuses 16b, the two conductive track sections 20b, 22b of the protection unit 14b, and the passage connection 34b. As an alternative, it is also conceived that a support element has three or more layers. In this case, a passage connection could also be made as a blind way.

Figure 7 shows the protection unit 14b in side section view after an erroneous operating state has occurred. In this case, the conductive track fuses 16b are destroyed and / or evaporated, whereby the electrically conductive connection between a power supply unit and a functional unit is separated.

Another example of embodiment of the invention is shown in Figures 8 to 10, in which the letter "c" has been postponed to the reference symbols. This embodiment of Figures 8 to 10 differs basically from the previous example of realization in the configuration of a protection unit 14c of a power supply line 12c of another domestic appliance device.

Figures 8 to 10 show the protection unit 14c on a first layer 30c of a support element 10c (see Figure 8), on a second layer 32c of the support element 10c (see Figure 9), and in representation of lateral section (see figure 10).

In this case, the protection unit 14c has three conductive track sections 20c, 22c, 24c, which are connected in series. A first conductive track section 20c of the protection unit 14c and a third conductive track section 24c of the protection unit 14c are arranged on the first layer 30c, and a second conductive track section 22c of the protection unit 14c is arranged on the second layer 32c. The first section of conductive track 20c and the

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third section of conductive track 24c of protection unit 14c are approximate or exactly annular. Likewise, the protection unit 14c has eight conductive track fuses 16c, 18c. Here, four electrically parallel conductive track fuses 16c electrically connect a conductive track section 26c of a current supply conductive track 44c with the first conductive track section 20c of the protection unit 14c, and four other fuses of electrically parallel conductive track 18c electrically conductively connects another conductive track section 28c of the current supply conductive track 44c with the third conductive track section 24c of the protection unit 14c. The conductive track fuses 16c, 18c are arranged on the first layer 30c of the support element 10c, whereby the second layer 32c of the support element 10c does not have conductive track fuses 16c, 18c.

The protection unit 14c also has two pass-through connections 34c, 36c made as through passages, and connected in series. In addition, the passage connections 34c, 36c are connected in series with the conductive track sections 20c, 22c, 24c of the protection unit 14c. The first passage connection 34c is directly electrically connected to the first conductive track section 20c on the first layer 30c of the support element 10c, and is directly electrically connected to the second conductive track section 22c of the protection unit 14c on the second layer 32c of the support element 10c. The second passage connection 36c is directly electrically connected to the second conductive track section 22c of the protection unit 14c on the second layer 32c of the support element 10c, and is directly electrically connected to the third section. of conductive track 24c of the protection unit 14c on the first layer 30c of the support element 10c.

Therefore, in one or more operating states a current flows at least through the four conductive track fuses 16c, of the first conductive track section 20c of the protection unit 14c, of the first pass-through connection 34c, of the second section of conductive track 22c of the protection unit 14c, of the second connection of passage 36c, of the third section of conductive track 24c of the protection unit 14c, and of the other four fuses of conductive track 18c.

Another example of realization of the invention is shown in Figure 11, in which the letter "d" has been postponed to the reference symbols.

In this case, a domestic appliance device has two parallel protection units 14d. The protection units 14d are identical to each other and correspond to a protection unit 14b of the embodiment example of Figures 4 to 7. Each of the protection units 14d has four conductive track fuses 16d, two track sections 5 conductor 20d, and a step connection 34d.

Another example of realization of the invention is shown in Figure 12, in which the letter "e" has been postponed to the reference symbols. This realization example of Figure 12 differs basically from the previous example of realization in the configuration of a protection unit 14e of a power supply line 12e of another device of domestic appliance.

In the present case, the protection unit 14e essentially corresponds to the protection unit 14b of the embodiment example of Figures 4 to 7.

However, in this case the protection unit 14e only has a conductive track section 20e which is arranged on a second layer of a support element 10e. Here, four conductive track fuses 16e are directly electrically connected with a passage connection 34e. Accordingly, the conductive track fuses 16e directly connect the passage connection 34e electrically directly with a conductive track section 20e of a conductive current supply track 44e.

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Reference symbols

Support element Current supply line Protection unit Conductive track fuse Conductive track fuse Conductive track section Conductive track section Conductive track section Conductive track section Conductive track section Layer layer

Step connection

Step connection

Domestic appliance

Cooking Field Plate

Heating zone

Conductive power supply track

Claims (11)

5 10 fifteen twenty 25 30 1. Domestic appliance device, in particular, cooking appliance device, with one or more support elements (10a-10e) and with one or several power supply lines (12a-12e), partially or fully arranged next to the support element (10a-10e), which comprise one or more protection units (14a-14e) that are provided to provide protection against overcurrent, characterized in that the protection unit (14a-) 14e) have two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) electrically parallel that electrically connect the two or more conductive track sections (20a, 22a, electrically conductive) 24a; 20b, 22b, 24b; 20c, 22c, 24c, 26c, 28c; 20d; 20e) of the current supply line (12a-12e). 2. Domestic appliance device according to claim 1, characterized in that the two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) are made as narrow points. 3. Domestic appliance device according to claim 1 or 2, characterized because the two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) do not have layers above them. 4. Domestic appliance device according to claim 1 or 2, characterized because the two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) have an additional protective layer with a destruction temperature below that of the two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) or the same destruction temperature as the two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e). 5. Domestic appliance device according to one of the preceding claims, characterized in that the two or more sections of conductive track (20a, 22a, 24a; 20b, 22b, 24b; 20c, 22c, 24c, 26c, 28c; 20d; 20e ) are arranged side by side in a layer (30a; 30b, 32b; 30c, 32c; 30d; 30e) of the support element (10a-10e). 5 10 fifteen twenty 25 30 6. Domestic appliance device according to one of the preceding claims, characterized in that at least one of the two or more conductive track sections (20b, 22b, 24b; 20c, 22c, 24c, 26c, 28c; 20d) surrounds at least to another of the two or more conductive track sections (20b, 22b, 24b; 20c, 22c, 24c, 26c, 28c; 20d), at least, in the visual direction perpendicular to the support element (10b-10d) . 7. Domestic appliance device according to one of the preceding claims, characterized in that the protection unit (14b-14e) extend through two or more layers (30b, 32b; 30c, 32c; 30d; 30e) of the support element (s) (10b-10e). 8. Domestic appliance device according to claim 7, characterized in that the protection unit (14b-14e) comprises one or more pass-through connections (34b; 34c, 36c; 34d; 34e), which connect the two or more layers (30b, 32b; 30c, 32c; 30d; 30e). 9. Domestic appliance device according to claim 8, characterized in that the two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) electrically connect the or the passage connections ( 34b; 34c, 36c; 34d; 34e) with at least one of the two or more conductive track sections (20b, 22b, 24b; 20c, 22c, 24c, 26c, 28c; 20d; 20e). 10. Domestic appliance device according to one of the preceding claims, characterized in that the two or more conductive track fuses (16a, 18a; 16b; 16c, 18c; 16d, 18d; 16e) are arranged next to one side of the the support elements (10a-10e) which, in the assembled state, are separated from the multiple electrical and / or electronic components. 11. Domestic appliance (38a-38e), in particular, cooking appliance, with one or more domestic appliance devices according to one of the claims set forth above.