EP4191141A1 - Household appliance device - Google Patents

Abstract

The invention is based on a household appliance device, in particular a hob device, with at least one housing (12a) and with at least one antenna unit (14a) which is arranged inside the housing (12a). In order to improve the signal quality of the antenna unit (14a). proposed that the household appliance device has at least one radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) which is arranged on the housing (12a), in particular on an outer wall of the housing (12a). , wherein the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) comprises at least one radiation opening (18a, 22a, 24a; 18b; 18c; 18d; 18e; 18f; 18g; 18h ; 18i; 18j) to let electromagnetic waves, which are received or transmitted by the antenna unit (14a) for wireless communication, pass through the housing (12a).

Description

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

A household appliance device, in particular a hob device, with at least one housing and with at least one antenna unit, which is arranged inside the housing, is already known from the prior art. Such a configuration disadvantageously shields the antenna unit from the housing, so that the signal quality of the antenna unit is severely limited when communicating with an external antenna through the housing.

The object of the invention consists in particular, but not limited thereto, in providing a generic device with improved properties with regard to a signal quality of the antenna unit. The object is achieved according to the invention by the features of claim 1, while advantageous refinements and developments of the invention can be found in the dependent claims.

The invention is based on a household appliance device, in particular a hob device, with at least one housing and with at least one antenna unit, which is arranged inside the housing.

It is proposed that the household appliance device comprises at least one radiation transmission unit, which is arranged on the housing, in particular on an outer wall of the housing, the radiation transmission unit comprising at least one radiation opening in order to receive or transmit electromagnetic waves which are received or transmitted by the antenna unit for wireless communication be allowed to pass through the housing.

Such a configuration makes it possible in particular to provide a domestic appliance device with an advantageously high signal quality. In particular, an advantageously high permeability of the housing for the electromagnetic waves relevant to the antenna unit can be achieved by means of the radiation opening. In particular, through the radiation opening, in particular in contrast to arbitrarily shaped

Openings in the housing that are not matched to the antenna unit, an advantageously high signal quality can be achieved, in particular while maintaining an advantageously high mechanical stability of the housing. In particular, the advantageously high signal quality also allows the implementation of complex services that require a high communication bandwidth, for example video transmission, big data data exchange or the like. In addition, the antenna unit can advantageously have a simple design and, in particular, components that are expensive to purchase and/or operate, such as in particular highly sensitive wires, powerful signal amplifiers, highly effective filters, suitable radio frequency connections or the like, can be dispensed with in order to be able to withstand shielding by the housing to achieve a sufficiently good signal quality. In particular, rejects of unusable antenna units can advantageously be kept to a minimum. In particular, the domestic appliance device can advantageously be manufactured simply and inexpensively.

A “household appliance device”, in particular a “cooking appliance device”, advantageously a “hob device” and particularly advantageously an “induction hob device” should in particular be understood to mean at least a part, in particular a subassembly, of a household appliance, in particular a cooking appliance, advantageously a hob and particularly advantageously a induction hob, to be understood. For example, a household appliance having the household appliance device could be a chest freezer and advantageously a refrigerator and/or freezer. A household appliance having the household appliance device could alternatively or additionally be, for example, a dishwasher and/or a washing machine and/or a dryer. A household appliance having the household appliance device is advantageously a cooking appliance. A household appliance designed as a cooking appliance could be, for example, an oven and/or a microwave and/or a grill and/or a steamer. A household appliance designed as a cooking appliance is advantageously a hob and preferably an induction hob.

A “cooktop device”, in particular an “induction cooktop device”, should be understood to mean in particular at least a part, in particular a subassembly, of a cooktop, in particular an induction cooktop in particular, accessory units for the hob can also be included, such as a sensor unit for externally measuring the temperature of a cooking utensil and/or a cooking item. In particular, the hob device, in particular the induction hob device, can also include the entire hob, in particular the entire induction hob.

The housing is intended in particular to accommodate a main functional unit of the household appliance device, which is intended in particular to carry out a main function, in particular cooking, cooling, rinsing or the like, of the household appliance device. For example, the main functional unit includes an induction coil or an electric heating coil of a hob device, a refrigerator of a refrigerator and/or freezer, a washing drum motor of a washing machine, a flushing water pump of a dishwasher, a magnetron of a microwave or the like. In particular, an accommodation volume of the housing is larger, in particular more than ten times, preferably more than twenty times larger, than a total volume of the antenna unit. The domestic appliance device preferably comprises at least one electronic control system for controlling the main functional unit, which is arranged in particular in the housing. The domestic appliance device can optionally include a cover, which is arranged on an outer wall of the housing, and/or a lower housing, which divides an interior space of the housing into different areas. The main functional unit, the control electronics and/or the antenna unit can be arranged directly in the interior of the housing, in a sub-housing of the domestic appliance arranged in the housing or distributed over several sub-housings arranged in the housing. The housing, shroud, and/or sub-housing(s) may be made of metal, alloy, plastic, and/or composite.

The antenna unit preferably includes at least one antenna. Optionally, the antenna unit includes at least one additional antenna. The additional antenna is preferably designed and/or aligned differently from the antenna. The electromagnetic waves are in particular radio waves. The antenna unit is preferably connected to the control electronics in terms of signals. In particular, the antenna unit is intended to receive signals from an external radio wave To receive the device and forward it to the control electronics, in particular wired. Additionally or alternatively, the antenna unit is intended to receive, in particular, wired signals from the control electronics and to send them to an external device in the form of radio waves. The antenna unit preferably comprises an antenna circuit, known in particular from the prior art, in which the antenna and/or the additional antenna is integrated, with for example a signal generator, a reception amplifier, a transmission amplifier, a digital/analog converter, an analog Digital converter, a crossover or the like. The antenna unit is designed, for example, as a Wi-Fi interface, a Bluetooth interface, a wireless local area network (WLAN) interface, a ZigBee interface, a Worldwide Interoperability for Microwave Access (WiMAX) interface or the like. The antenna unit, in particular the antenna, includes in particular a main communication frequency. The main communication frequency refers in particular to a frequency of electromagnetic waves at which an, in particular global, maximum of a radiated power or a maximum of a reception sensitivity of the antenna unit occurs. The main communication frequency is preferably less than 3000 GHz, in particular less than 1000 GHz, in particular less than 100 GHz. The main communication frequency is preferably greater than 50 kHz, preferably greater than 1 MHz, most preferably greater than 500 MHz. More preferably, the main communication frequency is between 2.3995 and 2.4845 GHz, between 5.150 and 5.350 GHz, between 5.470 and 5.725 GHz, between 5.925 and 6.425 GHz or between 57.0 and 66.0 GHz. The additional antenna includes, in particular, an additional main communication frequency, which is preferably in one of the frequency ranges already mentioned for the main communication frequency. The other main communication frequency can be the same as the main communication frequency of the antenna or can be different from the main communication frequency. A carrier frequency of the electromagnetic waves used for communication between the antenna unit and an external device preferably deviates from the main communication frequency by less than 15%, preferably by less than 10%, in particular by less than 5%.

The antenna unit is particularly preferably arranged completely in the housing. The antenna unit can be attached to an inner wall of the housing or to a mounting device arranged within the housing, in particular on a frame, on a mounting plate, on one of the sub-housings already mentioned, or the like. A smallest imaginary cuboid, which just completely surrounds the housing, in particular without any intersections, preferably also completely surrounds the antenna unit, in particular without any intersections. In particular, the antenna and/or the additional antenna does not protrude from the housing.

The radiation transmission unit includes in particular a base body. In particular, the base body forms a partial wall section for an outer wall of the housing. The radiation transmission unit is preferably designed in one piece with at least one outer wall of the housing. "In one piece" is to be understood in particular as being at least cohesively connected, for example by a welding process, an adhesive process, an injection molding process and/or another process that appears sensible to the person skilled in the art, and/or advantageously formed in one piece, such as by a Production from a single casting and/or by production using a single-component or multi-component injection molding process and advantageously from a single blank. Alternatively, the radiation transmission unit is designed as an independent structural component and is inserted into a material cutout in the housing or is arranged on an edge of the housing that delimits a material cutout across the material cutout. The radiation transmission unit can in particular be attached to an outside or an inside of the outer wall of the housing. The partial wall section is designed in particular in the form of a plate. In particular, the partial wall section comprises a largest outer surface and a material thickness perpendicular to the largest outer surface. The material thickness is preferably at least ten times, preferably more than twenty times smaller than a maximum diagonal of the largest outer surface. Optionally, the base body forms at least one further partial wall section, the largest outer surface of which runs transversely, in particular perpendicularly, to the largest outer surface of the partial wall section. The radiation opening is preferably arranged in the partial wall section. The radiation opening preferably has a maximum opening width. The maximum opening width is preferably of the same order of magnitude as a main communication wavelength and/or another main communication wavelength of the antenna unit. The main communication wavelength/further main communication wavelength of the Specifically, antenna unit is equal to the propagation speed of electromagnetic waves in vacuum divided by the main communication frequency/other main communication frequency. In particular, the maximum opening width of the radiation opening is greater than one twentieth, preferably greater than one tenth, of the main communication wavelength and/or the further main communication wavelength. The maximum opening width of the radiation opening is preferably less than or equal to four times, preferably less than or equal to twice, preferably less than or equal to a single time, the main communication wavelength and/or the further main communication wavelength. The radiation opening preferably has a maximum opening width which runs transversely, in particular perpendicularly, to the maximum opening width. The maximum opening width is preferably at most the same size as, preferably smaller than the maximum opening width. The radiation opening can comprise a number of sections, each with its own maximum opening width and/or maximum opening width. The radiation opening can, for example, be slit-shaped, L-shaped, U-shaped, meander-shaped or circular or have any other shape that appears sensible to a person skilled in the art.

“Provided” is to be understood in particular as being specially designed and/or equipped. The fact that an object is provided for a specific function is to be understood in particular to mean that the object fulfills and/or executes this specific function in at least one application and/or operating state.

It is also proposed that the radiation transmission unit is made from an electrically conductive material. Such a configuration means that the radiation transmission unit is designed in particular as a slit radiator. In particular, the electromagnetic waves to and/or from the antenna unit can advantageously be passed through the housing reliably and with advantageously low attenuation. In particular, at least the base body is made from the conductive material. The base body is particularly preferably made of metal, in particular stainless steel and/or aluminum. Alternatively, the base body is made of copper or another metal with a higher electrical conductivity than stainless steel. The radiation transmission unit, in particular the Base body can be grounded, be floating or, for example, as a conductor and / or as a capacity, be involved in the antenna circuit. The base body can in particular be electrically connected to the housing or be arranged on the housing in an electrically insulated manner from the housing by means of an insulation element of the radiation transmission unit.

Furthermore, it is proposed that one, in particular the already mentioned, maximum opening width of the radiation opening corresponds at least essentially to a wavelength of a main communication frequency, in particular the already mentioned main communication wavelength, of the antenna unit divided by a whole number. Such a design makes it possible, in particular, to ensure that electromagnetic waves with the main communication frequency can advantageously pass through the housing without being attenuated. In particular, electromagnetic waves having a frequency lower than the main communication frequency are advantageously greatly attenuated by the radiation transmitting unit. The whole number is preferably an integer power of 2, particularly preferably 2, 4, 8 or 16. The fact that a number "essentially" corresponds to a reference is to be understood in particular as meaning that the number is less than 15%, preferably by less than 15% deviates from the reference by less than 10%, particularly preferably by less than 5%, optionally by less than 3%.

It is also proposed that one, in particular the already mentioned, maximum opening width of the radiation opening corresponds at least essentially to a wavelength of a further main communication frequency, in particular the already mentioned further main communication wavelength, of the antenna unit divided by an integer, with the further main communication frequency outside a communication frequency band of the main communication frequency lies. Such a design makes it possible, in particular, to ensure that electromagnetic waves with the other main communication frequency can advantageously pass through the housing without being attenuated. In particular, electromagnetic waves with a frequency lower than the further main communication frequency are advantageously greatly attenuated by the radiation transmission unit. The integer is preferably an integer power of 2, more preferably 4, 8 or 16. More preferably the other main communication frequency corresponds at least essentially to an integer multiple of the main communication frequency. In particular, the main communication frequency and the further main communication frequency correspond at least essentially to one another up to an integer power of 2, particularly preferably 2, 4, 8 or 16. The communication frequency band of the main communication frequency and a communication frequency band of the further main communication frequency preferably does not overlap. A bandwidth of the communication frequency band is preferably less than 30%, preferably less than 20%, in particular less than 15% of the main communication frequency.

Furthermore, it is proposed that the radiation transmission unit comprises at least one further radiation opening, which is arranged in a common opening plane with the radiation opening. With such a configuration, an advantageously high signal intensity of the electromagnetic waves outside the housing can be achieved, in particular with the same transmission power of the antenna unit. Furthermore, differently aligned radiation openings can advantageously reliably allow many electromagnetic waves with different polarization to pass through the housing. The opening plane is in particular parallel to the largest outer surface of the partial wall section of the radiation transmission unit. The radiation opening and the antenna unit are preferably arranged along a straight line perpendicular to the plane of the opening. The maximum opening width and the maximum opening width of the radiation opening preferably span the opening plane. A maximum opening width and a maximum opening width of the further radiation opening preferably span the opening plane. The radiation opening and the further radiation opening preferably have the same shape. The radiation opening and the further radiation opening can be arranged parallel to one another, rotated and/or mirrored to one another within the plane of the opening. Alternatively, the radiation opening and the further radiation opening have different shapes. A dipole axis of the antenna and/or a dipole axis of the further antenna preferably runs at least essentially parallel to the opening plane.

In addition, it is proposed that the radiation transmission unit comprises at least one additional radiation opening, which is arranged in an additional opening plane, which runs transversely, in particular perpendicularly, to an opening plane in which the radiation opening is arranged. A high signal quality of the electromagnetic waves can advantageously be achieved in many directions by such an embodiment. Furthermore, differently aligned radiation openings can advantageously reliably allow many electromagnetic waves with different polarization to pass through the housing. The additional opening plane is in particular parallel to a largest outer surface of the further partial wall section of the radiation transmission unit. The additional radiation opening and the antenna unit are preferably arranged along a straight line perpendicular to the additional opening plane. A maximum opening width and a maximum opening width of the additional radiation opening preferably span the additional opening plane. The radiation opening and the additional radiation opening can have the same shape or different shapes. A dipole axis of the antenna and/or a dipole axis of the further antenna preferably runs at least essentially parallel to the additional opening plane.

It is further proposed that a minimum distance between the antenna unit and the radiation transmission unit is smaller than a maximum opening width of the radiation opening, in particular the previously mentioned maximum opening width. Such a configuration can in particular result in the radiation transmission unit advantageously effectively allowing the electromagnetic waves to pass through the housing. The minimum distance of the antenna unit is measured in particular along a straight line perpendicular to the plane of the opening. The minimum distance of the antenna unit preferably designates a minimum distance between the base body and the antenna and/or between the base body and the additional antenna. The antenna unit can optionally include components that are arranged closer to the base body than the antenna or the additional antenna. In particular, the minimum distance of the antenna and/or the further antenna from the radiation transmission unit is smaller than the maximum opening width of the radiation opening, the further radiation opening and/or the additional one radiation aperture. The minimum distance between the antenna and/or the additional antenna and the radiation transmission unit is preferably less than 150 mm, preferably less than 100 mm, in particular less than 50 mm.

Furthermore, it is proposed that a maximum opening width of the radiation opening running transversely to, in particular, the already mentioned maximum opening width of the radiation opening is less than or equal to 10 mm. Such a configuration can in particular ensure that the radiation transmission unit offers an advantageously high level of protection against the penetration of foreign bodies, in particular a finger, into the housing.

Furthermore, it is proposed that the radiation transmission unit comprises at least one, in particular the already mentioned, additional radiation opening, which has a different shape from the radiation opening. Such a design allows the different radiation openings to be precisely adapted to the different main communication wavelengths, particularly advantageously. In addition, a directional dependency of a radiation power or reception sensitivity of the antenna unit can advantageously be specifically adapted to different configurations of the household appliance device. In a configuration that is simple by way of example, the shape of the radiation opening and the shape of the additional radiation opening differ by a scale factor. In particular, the scale factor is added to the maximum opening width of one of the radiation openings. Alternatively, the radiation port and the additional radiation port have shapes that are independent of each other. A maximum opening width of the additional radiation opening is preferably less than or equal to 10 mm.

Furthermore, it is proposed that the radiation transmission unit comprises a multiplicity of radiation openings, in particular the radiation opening already mentioned and the further radiation opening already mentioned, which are arranged in a regular pattern. Such a configuration can, in particular, allow for an advantageously high transmission rate of the electromagnetic waves through the housing be reached. In addition, a directional effect of the antenna unit can advantageously be changed in a targeted manner. In particular, advantageously good spatial coverage can be achieved with the electromagnetic waves emitted by the antenna unit. Preferably, the radiation openings included in the pattern have the same shape. Alternatively, the pattern comprises at least two differently shaped radiation openings. A minimum distance between the radiation openings is preferably greater than half the maximum opening width of the radiation openings, preferably greater than the maximum opening width of the radiation openings, particularly preferably greater than twice the maximum opening width.

The household appliance device according to the invention should not be limited to the application and embodiment described above. In particular, the domestic appliance device can have a number of individual elements, components and units that differs from a number specified here in order to fulfill a functionality described herein.

Further advantages result from the following description of the drawing. Exemplary embodiments of the invention are shown in the drawing. 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 further meaningful combinations.

Fig. 1

eine schematische Darstellung einer erfindungsgemäßen Haushaltsgerätevorrichtung,

Fig. 2

eine schematische Darstellung einer Antenneneinheit der Haushaltsgerätevorrichtung,

Fig. 3

eine perspektivische schematische Darstellung einer Strahlungsdurchlasseinheit der Haushaltsgerätevorrichtung,

Fig. 4

eine weitere schematische Darstellung der Strahlungsdurchlasseinheit und

Fig. 5 bis 15

schematische Darstellungen beispielhafter Strahlungsöffnungen der Strahlungsdurchlasseinheit

Show it:

1

a schematic representation of a household appliance device according to the invention,

2

a schematic representation of an antenna unit of the household appliance device,

3

a perspective schematic representation of a radiation transmission unit of the household appliance device,

4

a further schematic representation of the radiation transmission unit and

figure 5 to 15

schematic representations of exemplary radiation openings of the radiation transmission unit

figure 1 shows a household appliance device 10a. The domestic appliance device 10a is configured as a hob device, for example. The household appliance device 10a comprises at least one housing 12a. The housing 12a defines in particular a transverse direction 40a, a longitudinal direction 42a perpendicular to the transverse direction 40a and a vertical direction 44a perpendicular to the transverse direction 40a and the longitudinal direction 42a. The housing 12a includes in particular a housing shell 28a, which forms a receiving space. The housing shell 28a includes in particular a base plate 30a. The bottom plate 30a preferably extends parallel to the longitudinal direction 42a and the transverse direction 40a. The base plate 30a is intended to be aligned on the horizontal for operation of the household appliance device 10a. The base plate 30a delimits the accommodation space of the housing 12a, in particular along the vertical direction 44a. The housing shell 28a comprises in particular at least one side wall which surrounds the receiving space and is arranged on the base plate 30a perpendicularly to the base plate 30a. The side wall delimits the receiving space in particular along the transverse direction 40a and the longitudinal direction 42a in both directions. The housing 12a preferably includes a cover (not shown here), which is arranged opposite the base plate 30a along the vertical direction 44a and closes the housing shell 28a.

The household appliance device 10a includes at least one antenna unit 14a. The antenna unit 14a is arranged within the housing 12a, in particular within the receiving space. The antenna unit 14a is designed as a printed circuit board, for example. The printed circuit board, which forms the antenna unit 14a, is preferably arranged at least essentially parallel to the base plate 30a in the receiving space. The housing 12a includes in particular a support unit 32a to which the antenna unit 14a is attached. The housing shell 28a is preferably made of metal, in particular steel. The cover is preferably made of metal, in particular aluminum. The support unit 32a is preferably off made of a plastic. In particular, the antenna unit 14a is arranged in the receiving space via the support unit 32a at a distance from the housing shell 28a.

The domestic appliance device 10a includes a radiation transmission unit 16a. The radiation transmission unit 16a is arranged on the housing 12a. In particular, the radiation transmission unit 16a is arranged on the side wall of the housing shell 28a. The radiation transmission unit 16a is arranged in particular on a front side of the household appliance device 10a. The front side is preferably intended to face a user during operation of the household appliance device 10a. The radiation transmission unit 16a comprises at least one radiation opening 18a. The radiation opening 18a is provided to allow electromagnetic waves, which are received or transmitted by the antenna unit 14a for wireless communication, to pass through the housing 12a. The radiation transmission unit 16a is made of an electrically conductive material. The radiation transmission unit 16a is formed here in particular in one piece with the housing shell 28a.

figure 2 shows the antenna unit 14a as a circuit board. The antenna unit 14a preferably includes an antenna 34a. A dipole axis of the antenna 34a is in particular at least substantially parallel to the transverse direction 40a. The antenna unit 14a preferably includes a further antenna 36a. A dipole axis of the further antenna 36a is preferably at least essentially parallel to the longitudinal direction 42a. Preferably, a maximum longitudinal extent of the printed circuit board forming antenna unit 14a along longitudinal direction 42a and a maximum transverse extent of the printed circuit board forming antenna unit 14a along transverse direction 40a is at least ten times greater than a thickness of the printed circuit board parallel to vertical direction 44a.

figure 3 shows the radiation transmission unit 16a. The radiation transmission unit 16a has a large number, in particular more than five, preferably more than ten, here for example 14, of radiation openings 18a, which are arranged in a regular pattern. Of the objects that are present several times, only one is provided with a reference number in each of the figures. The radiation transmission unit 16a comprises at least a further radiation opening 22a, which is arranged in a common opening plane with the radiation opening 18a. The opening plane is in particular parallel to the transverse direction 40a and the vertical direction 44a. In particular, the radiation transmission unit 16a comprises a partial wall section, in which the radiation opening 18a is arranged, which is formed in one piece with the side wall of the housing 12a. In particular, more than four, in particular more than five, in this case seven by way of example, radiation openings 18a, 22a are arranged in the opening plane. The radiation opening 18a and the further radiation opening 22a have in particular the same shape and in particular the same orientation. The radiation transmission unit 16a comprises at least one additional radiation opening 24a, which is arranged in an additional opening plane, which runs transversely, in particular perpendicularly, to the opening plane in which the radiation opening 18a is arranged. The additional opening plane runs in particular parallel to the longitudinal direction 42a and the transverse direction 40a. In particular, the radiation transmission unit 16a comprises a further partial wall section, in which the additional radiation opening 24a is arranged, which is formed in one piece with the base plate 30a. In particular, more than four, in particular more than five, seven here by way of example, additional radiation openings 22a are arranged in the additional opening plane. The additional radiation opening 24a has a different shape from the radiation opening 18a. In particular, the radiation openings 18a, 22a, 24a each have a maximum opening width 20a, 21a and a maximum opening width 26a (cf. 4 ). The maximum opening width 20a of the additional radiation opening 24a is in particular longer, here by way of example 25% longer, than the maximum opening width 21a of the radiation opening 18a and the further radiation opening 22a. The maximum opening width 20a, 21a is preferably larger than the maximum opening width 26a of the radiation openings 18a, 22a, 24a. The maximum opening width 21a of the radiation opening 18a and/or the further radiation opening 22a run in particular perpendicular to the dipole axis of the antenna unit 14a, in particular parallel to the height direction 44a. The maximum opening width 20a of the additional radiation opening 24a runs, for example, perpendicularly to the dipole axis of the antenna 34a and in particular parallel to the dipole axis of the further antenna 36a. One of the radiation openings 18a, 22a in the opening plane and one of the additional radiation openings 24a in the additional opening plane lie in a plane which runs perpendicular to the opening planes.

figure 4 shows a view of the further partial wall section with the additional radiation opening 24a. An opening distance 38a between each two of the radiation openings 18a, 22a, 24a in the same opening plane is preferably larger, in particular many times larger, than the opening width 26a of the radiation openings 18a, 22a, 24a. The maximum opening width 26a of the radiation openings 18a, 22a, 24a running transversely to the maximum opening width 20a, 21a of the radiation openings 18a, 22a, 24a is less than or equal to 10 mm. The maximum opening width 21a of the radiation opening 18a corresponds at least substantially to a wavelength of a main communication frequency of the antenna unit 14a divided by an integer. By way of example, the antenna unit 14a has a main communication frequency of 2.45 GHz. The maximum opening width 21a of the radiation opening 18a is preferably greater than 58 mm, preferably greater than 60 mm, in particular equal to 61 mm. Alternatively, the maximum opening width 21a of the radiation opening 18a is greater than 29 mm, in particular equal to 30 mm. The maximum opening width 20a of the radiation opening 18a corresponds at least substantially to a wavelength of another main communication frequency of the antenna unit 14a divided by an integer. The additional main communication frequency preferably corresponds at least substantially to the main communication frequency up to an integer factor, in particular so that the radiation opening 18a lets the main communication frequency and the additional main communication frequency pass through the housing 12a. For example, the antenna unit 14a has the further main communication frequency of 5 GHz. In particular, the communication frequency band is less than 100 MHz. The further main communication frequency lies outside a communication frequency band of the main communication frequency. A minimum distance of the antenna unit 14a from the radiation transmission unit 16a is smaller than the maximum opening width 20a of the radiation opening 18a.

In the Figures 5 to 15 different exemplary embodiments of the radiation opening are shown in each case. The following descriptions are essentially limited to the differences between the exemplary embodiments, with regard to components, features and functions that remain the same on the description of the embodiment of Figures 1 to 5 can be referred. To distinguish between the exemplary embodiments, the letter a is in the reference numerals of the exemplary embodiment in FIGS Figures 1 to 5 by the letters b to I in the reference numerals of the embodiments of FIG Figures 6 to 15 replaced. With regard to components with the same designation, in particular with regard to components with the same reference symbols, reference can in principle also be made to the drawings and/or the description of the exemplary embodiment of FIG Figures 1 to 5 to get expelled.

figure 5 shows in particular the radiation opening 18a. In particular, the radiation opening 18a has the shape of a straight slit.

figure 6 shows a radiation transmission unit 16b of a household appliance device according to the invention. The radiation transmission unit 16b comprises in particular an L-shaped radiation opening 18b.

figure 7 shows a radiation transmission unit 16c of a household appliance device according to the invention. The radiation transmission unit 16c comprises in particular a U-shaped radiation opening 18c.

figure 8 shows a radiation transmission unit 16d of a household appliance device according to the invention. The radiation transmission unit 16d comprises in particular a meandering radiation opening 18d.

figure 9 shows a radiation transmission unit 16e of a household appliance device according to the invention. The radiation transmission unit 16e comprises in particular a circular radiation opening 18e.

figure 10 shows a radiation transmission unit 16f of a household appliance device according to the invention. The radiation transmission unit 16f comprises in particular a radiation opening 18f. Specifically, a shape of the radiation port 18f combines a circular central portion and a straight slit passing through a center of the circular central portion. A maximum opening width of the radiation opening 18f predetermined by the slit is in particular at least 10%, preferably more than 25%, larger than a diameter of the circular central area.

figure 11 shows a radiation transmission unit 16g of a household appliance device according to the invention. The radiation transmission unit 16g comprises a radiation opening 18g which, in particular, corresponds to the radiation opening 18f of the preceding figure 10 is equivalent to. A main body of the radiation transmission unit 16g has in particular a maximum transverse extent parallel to a maximum opening width of the radiation opening 18g, which is less than 50%, in particular less than 30%, particularly preferably less than 25% longer than the maximum opening width.

figure 12 shows a radiation transmission unit 16h of a household appliance device according to the invention, which is in particular the radiation transmission unit 16g of the preceding figure 11 corresponds, with a circular central region of a radiation opening 18h of the radiation transmission unit 16h also being divided into circle segments.

figure 13 16 shows a radiation transmission unit 16j of a household appliance device according to the invention. The radiation transmission unit 16j comprises in particular a radiation opening 18j. Specifically, a shape of the radiation port 18j combines a circular central portion and a slit passing through a center of the circular central portion. In particular, the slot tapers in both directions of a straight line passing through the center point, starting from the center point in the radial direction, in particular tapering to a point.

figure 14 shows a radiation transmission unit 16k of a household appliance device according to the invention. The radiation transmission unit 16k comprises in particular a radiation opening 18k. In particular, one shape of the radiating aperture 18k combines a circular central area and a plurality of straight slits passing through a center point of the circular central area. Each two of the slits preferably enclose an angle of more than 10°, preferably more than 20° and in particular less than 45°. Here, the radiation opening 18k has three slits, for example. In particular, the two most divergent slots enclose an angle of less than 90°. All slots are preferably of the same length.

figure 15 shows a radiation transmission unit 161 of a household appliance device according to the invention. In particular, the radiation transmission unit 161 comprises a radiation opening 181. In particular, a shape of the radiation opening 181 combines a circular central area and a plurality of straight slits which pass through a center point of the circular central area. Each two of the slots preferably enclose an angle of less than 20°, preferably less than 15° and in particular more than 5°. Here, the radiation opening 181 has five slits, for example. In particular, the two most divergent slots enclose an angle of less than 90°. Preferably, the slots have an alternating maximum length.

Reference sign

10

household appliance device

12

Housing

14

antenna unit

16

radiation transmission unit

18

radiation aperture

20

maximum opening width

21

maximum opening width

22

further radiation opening

24

additional radiation opening

26

maximum opening width

28

housing shell

30

bottom plate

32

support unit

34

antenna

36

another antenna

38

opening distance

40

transverse direction

42

longitudinal direction

44

height direction

Claims (10)

Household appliance device, in particular hob device, with at least one housing (12a) and with at least one antenna unit (14a), which is arranged inside the housing (12a), characterized by at least one radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g ; 16h; 16i; 16j), which is arranged on the housing (12a), in particular on an outer wall of the housing (12a), the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i ; 16j) comprises at least one radiation opening (18a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) in order to let electromagnetic waves, which are received or transmitted by the antenna unit (14a) for wireless communication, through to let the housing (12a) through. Household appliance device according to Claim 1, characterized in that the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) is made of an electrically conductive material. Household appliance device according to Claim 1 or 2, characterized in that a maximum opening width (20a, 21a) of the radiation opening (18a, 22a, 24a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) is at least essentially one wavelength corresponds to a main communication frequency of the antenna unit (14a) divided by an integer. Household appliance device according to Claim 3, characterized in that a maximum opening width (20a, 21a) of the radiation opening (18a, 22a, 24a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) corresponds at least essentially to a wavelength of a another main communication frequency of the antenna unit (14a) divided by an integer, the other main communication frequency being outside a communication frequency band of the main communication frequency. Household appliance device according to one of the preceding claims, characterized in that the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) comprises at least one further radiation opening (22a) which is in a common opening plane with the Radiation opening (18a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) is arranged. Household appliance device according to one of the preceding claims, characterized in that the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) comprises at least one additional radiation opening (24a) which is arranged in an additional opening plane , which runs transversely to an opening plane in which the radiation opening (18a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) is arranged. Household appliance device according to one of the preceding claims, characterized in that a minimum distance of the antenna unit (14a) from the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) is smaller than a maximum opening width ( 20a, 21a) of the radiation opening (18a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j). Household appliance device according to one of the preceding claims, characterized in that a maximum opening width (20a; 21a) of the radiation opening (18a, 22a, 24a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) running transversely maximum opening width (26a) of the radiation opening (18a, 22a, 24a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) is less than or equal to 10 mm. Household appliance device according to one of the preceding claims, characterized in that the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) comprises at least one additional radiation opening (24a), which is one of the radiation opening (18a ; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) has a different shape. Household appliance device according to one of the preceding claims, characterized in that the radiation transmission unit (16a; 16b; 16c; 16d; 16e; 16f; 16g; 16h; 16i; 16j) has a large number of radiation openings (18a, 22a, 24a; 18b; 18c; 18d; 18e; 18f; 18g; 18h; 18i; 18j) arranged in a regular pattern.

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