WO2023203005A1

WO2023203005A1 - Household appliance device and household appliance

Info

Publication number: WO2023203005A1
Application number: PCT/EP2023/059967
Authority: WO
Inventors: Jesús Ricardo Ruiz Gracia; Julio Rivera Peman; Damaso Martin Gomez
Original assignee: BSH Hausgeräte GmbH
Priority date: 2022-04-20
Filing date: 2023-04-18
Publication date: 2023-10-26

Abstract

The invention relates to a household appliance device (12), in particular a hob device, comprising at least one plate unit (14), at least one light source (16) and at least one light-guide unit (18) which is provided for guiding light from the light source (16) to a target region (20) on the plate unit (14), and which has at least one section (26) designed as a hollow light guide (28). According to the invention, in order to provide a generic household appliance device with improved characteristics in terms of illumination, light guiding and efficiency, the household appliance device (12) has a light deflection element (30) which is arranged in front of the light source (16) and in the section (26).

Description

Household appliance device and household appliance

State of the art

The invention relates to a household appliance device according to the preamble of claim 1 and a household appliance according to claim 15.

Household appliance devices are already known from the prior art, which have at least one light source and at least one light guide unit with a hollow light guide channel in order to guide light from the light source to a target area.

The object of the invention is in particular, but not limited to, to provide a generic device with improved properties in terms of lighting, light guidance and efficiency. The object is achieved according to the invention by the features of claims 1 and 15, while advantageous refinements and developments of the invention can be found in the subclaims.

Advantages of the invention

The invention is based on a household appliance device, in particular a hob device, with at least one plate unit, with at least one light source and with at least one light guide unit, which is intended to guide light from the light source to a target area on the plate unit, and which has at least one section which is designed as a hollow light guide.

It is proposed that the household appliance device has a light deflecting element which is arranged in front of the light source and in the section.

With such a design, lighting and light guidance can be improved. Furthermore, efficiency, with regard to at least the lighting, can be increased, namely a light intensity can be increased in at least one target area. In addition, light can be guided and/or amplified along a light guide unit starting from a light source more efficiently and precisely, thereby increasing the light intensity. the. Furthermore, a compact and efficient construction can be provided. Furthermore, efficiency can be increased in terms of product and/or cost and/or manufacturing and/or construction and/or performance and/or energy efficiency. In addition, a loss of light intensity between a light source and the target area can be reduced, preferably avoided. In addition, a loss of light and/or a loss of light intensity in at least a section of the light-guiding unit can be reduced and advantageously avoided. This can increase comfort in terms of user comfort and provide an improved user experience. In addition, the light provided by the light source can be used more efficiently and preferably the light source can be made smaller.

The household appliance device could be, for example, a cooking appliance device, possibly a microwave device and/or a grill device and/or a steam appliance device and/or an oven device and/or preferably the hob device. Alternatively and/or additionally, the household appliance device could also be a household refrigeration device device, in particular a refrigerator and/or freezer device, and/or a household cleaning device device, for example a dishwasher device and/or a washing machine device and/or a tumble dryer device. In an installed position, the household appliance device forms a subassembly of a household appliance, in particular a household refrigeration appliance and/or a household cleaning appliance, for example a dishwasher and/or a washing machine and/or a tumble dryer, and/or a cooking appliance, such as a microwave and/or a grill and / or a steam device and / or an oven and / or particularly preferably a hob. The hob is preferably a matrix hob. The hob device could be designed as a resistance hob device and/or preferably as an induction hob device. The hob device designed as an induction hob device is advantageously a subassembly of an induction hob device. In addition, the hob device could also include accessory units for the hob, such as a extraction unit and/or at least one sensor unit, in particular at least one temperature sensor, for measuring a temperature of a set-up unit, in particular a cooking utensil, and/or a food item to be cooked and/or for placement in the Set-up unit and/or in the food to be cooked, for example in the form of a spit, and/or a detection unit for detection of at least the installation unit. It would also be conceivable for the household appliance device to include the entire household appliance, in particular the entire hob.

The household appliance device and/or the household appliance is/are intended for use and/or arrangement in a household, in particular a kitchen. The household appliance could in turn be part of a household appliance system, in particular a hob system, wherein the household appliance system could have a large number of units and/or devices which can be used for processing and/or treating and/or storing food . The household appliance system could additionally have at least one household appliance object, in particular a hob object. For example, the household appliance object could be at least the set-up unit and/or a extraction unit and/or at least the sensor unit, in particular at least one temperature sensor. It would also be conceivable that the household appliance object could be at least partially part of a subgroup of at least the household appliance, in particular the hob. The household appliance object could, for example, have at least one control unit, for example a remote control, and/or at least one operator interface and/or at least one exhaust fan unit and/or at least one heating unit control electronics.

The plate unit is at least one, in particular plate-like, unit which is intended for setting up at least the setting up unit and/or for placing at least one food item, in particular the food to be cooked. The plate unit could, for example, be designed as a worktop, in particular as a kitchen worktop, or as a partial area of at least one worktop, in particular at least one kitchen worktop. Preferably, the kitchen worktop, in particular in contrast to a hob top, is additionally intended to provide a food preparation area in which, for example, cutting and/or mixing and/or pounding and/or peeling of food could be carried out. In particular, the kitchen worktop is a piece of furniture, preferably a piece of kitchen furniture. The kitchen worktop is advantageously a part of the kitchen and in particular delimits and/or closes a part of an assembly of kitchen cabinets and/or kitchen furniture and/or other household appliances, such as se a dishwasher and/or a washing machine and/or an oven, upwards.

Alternatively and/or additionally, the plate unit could be designed as a hob plate. The plate unit designed as a hob plate could form at least a part of a hob outer housing of the hob and advantageously form at least a large part of the hob outer housing together with at least one housing unit of the household appliance device to which the hob plate is connected in at least one assembled state. The plate unit is connected to the housing unit, for example, by means of a force and/or positive and/or material connection. Preferably the plate unit is made of a non-metallic material. The plate unit could be at least partially or at least largely made of glass and/or glass ceramic and/or Neolith and/or Dekton and/or wood and/or marble and/or stone, in particular natural stone, and/or be made of laminate and/or plastic and/or ceramic and/or a composite material. The term “to a large extent” should be understood to mean at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85% and particularly advantageously at most 95% of a volume and/or mass fraction. In a preferred embodiment, the plate unit can have a thickness, in particular a material thickness, of at most 30 mm, preferably at most 20 mm and particularly preferably at most 12 mm. In this document, position designations such as “below” or “above” refer to the mounted state of the disk unit, unless explicitly described otherwise.

The installation unit can have a small household appliance and/or the cooking utensils. The small household appliance could be, for example, a coffee maker and/or a toaster and/or a kettle and/or a mixer and/or a stirrer. Advantageously, the small household appliance could be at least partially supplied with energy inductively when it is placed on the support plate. The cooking utensil can be designed, for example, as a pot and/or a pan and/or a roaster. If the household appliance device is designed as an induction hob device, the cooking utensils could be at least partially inductively supplied with energy when placed on the kitchen worktop, at least for heating purposes. It would also be conceivable for the installation unit to have a base unit, which is intended to be placed under the cooking utensils and/or the small household appliance. The underlay unit can advantageously be arranged between the plate unit and the cooking utensils and/or the small household appliance. In particular, the installation unit can be arranged in a cooking surface area on the plate unit.

The household appliance device preferably has at least one heating unit, which is designed as a resistance heating unit and/or preferably as an induction heating unit. In particular, the heating unit is arranged below the plate unit. The heating unit is advantageously provided for heating at least the set-up unit for cooking at least the food to be cooked in the cooking surface area on the plate unit. The heating unit is preferably arranged in the housing unit, specifically in an interior space which is at least partially delimited by the housing unit and the plate unit.

It would be conceivable for the plate unit to have engravings and/or prints for marking a cooking surface area, in particular the said cooking surface area, for at least the installation unit. However, the plate unit is preferably free of engravings and/or prints. The household appliance device, in particular the plate unit, has at least the cooking surface area. The cooking surface area is preferably designed as a variable cooking surface area. A “variable cooking surface area” is to be understood as meaning a cooking surface area which is intended to form at least one heating zone that is adapted to at least the set-up unit, in particular the small household appliance and/or the cooking utensils. The heating zone can preferably be adapted to the installation unit in terms of at least one size and/or shape. The variable cooking surface area advantageously differs from a cooking surface area in which heating zones are fixed, in particular by markings on the mounting plate.

Preferably, by means of the light provided by the light source, for example, at least the cooking surface area on the plate unit and/or at least one possible placement of at least the set-up unit on the plate unit and/or a danger zone, for example a hot spot within the cooking surface area, on the plate unit for a user displayable. In particular, the target area can be illuminated using the light provided by the light source. The target area on the plate unit can be a subarea within the cooking surface area, for example a single area local location in the cooking surface area, or the entire cooking surface area. It would be conceivable that the target area is a partial area within the cooking surface area, which forms at least 1%, advantageously at least 3% and preferably at least 10% of the cooking surface area. Furthermore, the target area designed as a partial area within the cooking surface area could form at most 80%, advantageously at most 50% and preferably at most 30% of the cooking surface area. It would also be conceivable that the target area on the plate unit is located outside the cooking surface area, for example in an operating area in which an operator interface, in particular a hob operator interface, could be arranged, and / or in a extraction area in which the extraction unit could be arranged, and / or in an electronics area in which at least one electronics of the household appliance device could be arranged. The disk unit could also have multiple target areas, namely at least two target areas or a plurality of target areas. All target areas could be illuminated using light provided from the same light source. Alternatively, the target areas could also receive light from different light sources of the household appliance device and/or be illuminated by means of light provided by different light sources of the household appliance device.

The light source can have at least one light source, which, for example, has at least one LED, and/or an electronic paper (e-paper, ePaper) and/or liquid crystals and/or at least one organic light-emitting diode (OLED) and/or at least one Active Matrix Organic Light Emitting Diode (AMOLED).

The light guide unit is intended to guide light, preferably the light provided by the light source, in particular directly and possibly unprocessed, towards the target area and preferably to the target area on the plate unit. The light guide unit may include a plurality of elements and/or units that help guide and/or direct light from the light source to the target area on the disk unit. It would also be conceivable for the light guide unit to have at least one optical element, such as a diffuser unit for conversion into diffuse light and/or a beam splitter and/or a color filter and/or a polarization filter and/or another optical element that appears useful to a person skilled in the art . The light guide unit could at least have a plan entry area for the provided have provided light, which is advantageously adapted to a dimension and / or shape and / or size of the light source.

The light guide unit is designed, at least in sections, as a hollow light guide. In addition, the light guide unit can be at least partially, at least to a large extent and preferably completely solid and/or filled, at least in sections. The section designed as a hollow light guide can, for example, form at least 5%, advantageously at least 10% and preferably at least 30% of the light guide unit and / or along in particular a main extension direction of the light guide unit over at least 5%, advantageously at least 10% and preferably at least 30% of the light guide unit extend.

The light guide unit, in particular at least the section, could possibly have a curved and/or a straight shape, at least in sections. The section preferably has a rod-like and/or straight and/or elongated shape. Particularly preferably, an inner cross-sectional area of the section is designed to be at least substantially constant and/or consistent, at least in sections along the section, in particular regardless of manufacturing tolerances. The inner cross-sectional area of the section could be at least substantially constant and/or consistent over at least 20%, advantageously at least 40%, preferably at least 60% and particularly preferably over at least 80% along a main extension direction of the section.

In the present case, a “main extension direction” of an object, in particular of the section, is to be understood as a direction which runs parallel to a longest edge of a smallest geometric cuboid, which just completely encloses the object. In particular, the main extension direction of the object extends within a main extension plane of the object. In the present case, a “main extension plane” of an object, in particular of the section, is to be understood as a plane which is aligned parallel to a largest side surface of the smallest imaginary cuboid, which just completely encloses the object, and in particular runs through the center of the cuboid.

Preferably, the section is arranged directly, in direct contact with the light source. In particular, the section shows at least the planned entry point area for the light provided, which is advantageously adapted to a dimension and / or shape and / or size of the light source.

The light deflection element is an optical element which is intended to at least partially deflect and/or redirect light, in particular the light provided by the light source. The light deflection element is advantageously provided to change and/or redirect and/or deflect a beam path of the light starting from the light source. In particular, the light deflecting element deflects and/or redirects the light in the section. In the present case, the light provided by the light source, which is deflected by means of the light deflection element, is referred to as deflected light.

In particular, the light before it hits the light deflection element is referred to as provided light. After deflecting by means of the light deflection element, the light is referred to in particular as the deflected light.

The light deflection element is particularly preferably arranged in a light entry region of the section. As a result, light guidance in at least one section of a light guidance unit, directly at the beginning starting from the light source, can be further improved and made more efficient. This in turn allows lighting to be optimized and comfort to be increased. The light entry area can correspond at least partially and advantageously completely to the aforementioned entry area of the section. The light source is advantageously arranged directly on the section, free of intermediate components and/or components. Preferably, the light deflecting element is arranged directly in front of the light source in the section, specifically in the light entry region of the section. In particular, the light provided by the light source hits the light deflection element.

Furthermore, here and in the following, “intended” is to be understood as specifically programmed, designed and/or equipped. The fact that an object is intended for a specific function should be understood 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 light deflection element is at least partially prism-shaped. This allows light guidance in at least one section of a light guidance unit to be further optimized and a simple and/or compact design to be provided. In addition, efficiency in terms of lighting and light intensity in a target area can be increased.

In particular, the light deflecting element refracts the light in the section and redirects it. The light deflection element could be at least partially designed in the shape of a reflection prism. It would be conceivable that the light deflecting element is prism-shaped only on one side. The side could extend parallel to a main extension direction of the light deflecting element. In particular, the side is a long side of the light deflecting element. That part of the light deflecting element, which is at least partially and preferably completely prism-shaped, could have a width extension of at least 0.7 mm, advantageously at least 0.9 mm and preferably at least 1 mm. Furthermore, the light deflection element could have a height extension of at least 2 mm, advantageously at least 4 mm and particularly preferably at least 6 mm.

In order to improve the deflection and/or redirection of light in at least one section of a light guide unit and thus in turn to improve light guidance and efficiency, it is proposed that the light deflection element is at least partially designed in the shape of a converging lens. The light deflection element could at least partially have, for example, a biconvex and/or concavo-convex and/or advantageously plano-convex shape. It would be conceivable that the light deflection element is designed in the form of a converging lens only on one further side. The further side could extend parallel to the main extension direction of the light deflection element. In particular, the further side is a further longitudinal side of the light deflecting element. The side and the other side could be opposite each other. That part of the light deflection element, which is at least partially and preferably completely designed as a converging lens, could have a further width extension of at least 0.1 mm, advantageously at least 0.2 mm and preferably at least 0.4 mm.

It would possibly be conceivable that the light deflection element is at least partially connected to the light source in one piece, in particular in one piece, and belongs to an assembly of the light source. If the light deflecting element is designed separately from an assembly forming the light source, a construction can be reduced in terms of complexity and efficiency in terms of product and/or cost and/or manufacturing and/or construction and/or work efficiency, be further increased. The light deflection element is designed separately from the light source. Preferably, the light source is intended to emit light primarily along a first direction and the portion of the light guide unit extends along a second direction, the second direction being different from the first direction. This allows a compact design to be provided and efficiency to be increased. In particular, the light provided radiates from the light source in the first direction. In particular, the second direction corresponds to the main direction of extension of the section. The first direction and the second direction could together include an intersection angle which is at least 3°, advantageously at least 5°, preferably at least 10° and particularly preferably at least 15°. It would also be conceivable for the first direction and the second direction to extend at least substantially perpendicular to one another, with an angle between the first direction and the second direction being at most 5°, preferably at most 2° and particularly advantageously at most 1° from one right angle deviates. The expression that “the light source is intended to emit light primarily along a first direction” is intended to mean at least 30%, advantageously at least 50%, preferably at least 50% and particularly preferably at least 80% of the light provided by the light source radiates in the first direction.

Particularly preferably, the light deflecting element is intended to deflect the light from the first direction into a third direction, which is closer to the second direction than the first direction. In this way, light guidance in at least one section of a light guidance unit can be further optimized and thus light intensity in at least one target area can be increased. In addition, light can be guided and/or amplified along at least the section starting from a light source more efficiently and precisely, whereby a loss of light and/or a loss of light intensity in at least the section can be reduced and advantageously avoided

The third direction can deviate from the first direction by at least 3%, advantageously at least 5%, preferably at least 10% and particularly preferably by at least 20%. Preferably the third direction corresponds to the second direction. In particular, the light, advantageously the deflected light, radiates in the third direction along at least the section, in particular along the main extension direction of the section. Preferably, the light deflection element is at least partially designed as a collimator. The light deflecting element is intended to adapt a light guide to an orientation of the section.

In an advantageous embodiment of the invention, it is proposed that the light deflection element is designed at least partially and advantageously completely in one piece with the light guide unit, in particular the section. As a result, a construction can be improved, namely a compact construction can be provided. In addition, efficiency in terms of product and/or cost and/or manufacturing and/or design efficiency can be further increased. In addition, a light deflecting element can be extended.

“In one piece” should be understood to mean at least materially connected, for example through an adhesive process, a spraying process and/or welding process and/or another process that appears sensible to a person skilled in the art. The light guide unit and the light deflection element could at least partially consist of different material compositions. The light deflection element and the light guide unit are preferably designed in one piece. “One-piece” is intended to mean formed in one piece. Preferably, this one piece is made from a single blank, a mass and/or a casting, particularly preferably in an injection molding process, in particular a single- and/or multi-component injection molding process, and/or in a stamping process and/or another process known to the person skilled in the art Process made from the individual blank using a process that seems sensible.

The light guide unit and/or the light deflecting element could consist at least partially or at least largely of a mineral, for example glass, and/or a plastic and/or a metal and/or a composite material. The section designed as a hollow light guide is preferably formed at least partially and advantageously completely from opaque and/or light-impermeable material. At least the section is advantageously formed from a high-temperature material. The high-temperature material can be, for example, aluminum, PEEK, LCP, PPS and/or Teflon. Alternatively and/or additionally, the light deflection element could be formed from a high-temperature material. The light deflection element is preferably made of a transparent and/or transparent material. In order to improve light reflection within at least the section of the light guide unit and thus in turn increase light intensity, at least one inner wall of the section can be provided with a coating. In particular, the coating is intended to improve and/or support light reflection within the section, advantageously along the main extension direction of the section. The coating can be, for example, a PVD coating. The section could have the coating on an entire inner wall along the section. The section preferably has the coating at least at the beginning and/or at the end of the section on the inner wall. The coating could extend at least 5%, advantageously at least 15%, preferably at least 30% and particularly preferably at least 50% along the inner wall of the section. It would also be conceivable that at least one side of the inner wall of the section is free of a coating, in particular the coating.

It is also proposed that the light source has at least two lamps arranged next to one another and that the light deflection element extends over both lamps. As a result, lighting, with regard to lighting in at least one target area, as well as lighting guidance can be further improved. This in turn can increase comfort, in terms of user comfort, and efficiency, in terms of product and/or design and/or performance and/or energy efficiency. In addition, a design can be further optimized.

The two lamps can each, for example, have at least one LED, and/or an electronic paper (e-paper, ePaper) and/or liquid crystals and/or at least one organic light-emitting diode (OLED) and/or at least one active matrix organic light-emitting diode ( AMOLED). The two lamps are preferably designed to be identical to one another. It would be conceivable that the light source comprises a large number of lamps, for example at least three or four or six lamps. All lamps of the light source could be arranged next to each other. The light source could have at least one circuit board on which at least the light source is arranged. Preferably, all lamps, namely at least the two lamps, are arranged next to each other on the circuit board. The light cover element could extend over all lamps that the light source has. Particularly preferably, a main extension of the light deflection element corresponds at least in part to essentially a main extent of the light source. In this document, “at least substantially” is intended to mean that a deviation from a predetermined value is less than 25%, preferably less than 10% and particularly preferably less than 5% of the predetermined value.

In order to further optimize light guidance and efficiently redirect and/or redirect light provided by a light source, it is proposed that the light deflection element has a stepped shape and a separate step is provided for each of the lamps.

In particular, a separate individual stage is provided for each of the light sources of the light source. The light deflecting element could have the stepped shape on at least one side. It would possibly be conceivable for the light deflecting element to have the stepped shape on each side. The light deflecting element advantageously has the stepped shape on the side on which the light deflecting element is at least partially prism-shaped. In particular, the light deflecting element has the stepped shape on the long side. The light deflection element could have more steps than the light source has lamps. The light deflection element advantageously has exactly as many stages as the light source has lamps.

The light provided by the light source, namely the light of at least a first lamp of the light source, can impinge on a first stage of the light deflection element. The light provided can be deflected by a first deflection angle at the first stage. In particular, the first stage deflects and/or redirects the light by a first deflection angle of at least 10°, advantageously at least 30°, preferably at least 50° and particularly preferably by at least 80°. Preferably, the first stage deflects and/or redirects the light from the first lamp by at least substantially 90°, namely at least substantially vertically. In this context, “at least substantially perpendicular” should be understood to mean an angle between 85° and 95°, preferably between 88° and 92° and particularly advantageously 90°.

The light deflected and/or deflected at the first deflection angle can be deflected and/or deflected by a further first deflection angle on the further side of the light deflecting element, in particular that side of the light deflecting element on which the light deflecting element is at least partially designed in the shape of a collecting lens. In particular Specially, the light on the further side can be deflected and/or redirected by a further first deflection angle of at least 1°, advantageously at least 3°, preferably at least 5° and particularly preferably by at least 8°. In particular, the light deflected and/or redirected on the further side of the light deflection element by the further first deflection angle radiates along the third direction.

Particularly preferred are the descriptions of the redirection and/or deflection of light from the first lamp by means of at least the first stage and/or the further side of the light deflection element onto at least one second lamp of the light source and at least one second stage of the light deflection element and in particular onto further lamps of the light source and applicable to further stages of the light deflection element.

It is also proposed that the light guide unit has at least one further section, which is also designed as a hollow light guide and is intended to guide light to a further target area. As a result, light guidance from at least one further light source to at least one further target area can be improved and thus overall lighting and a construction can be optimized.

The further section can have a curved shape. The further section advantageously has a rod-like and/or straight and/or elongated shape. Preferably, the section and the further section are at least essentially identical to one another. In this context, the phrase “at least substantially identical objects” means objects, in particular sections, which advantageously have the same structure and/or shape and/or design and/or at least to a large extent the same material composition, but differ in terms of their Functionality, their internal structure and / or their arrangement on another object and / or their orientation with respect to another object can at least partially differ. However, the at least essentially identical objects are advantageously identical apart from manufacturing tolerances and/or in the range of standardized tolerances.

Furthermore, it is proposed that the household appliance device has at least one further light source for providing light in at least the further section. In this way, overall lighting can be further optimized and a design can be improved. Preferably, the light source and the further light source are at least at least essentially identical to one another, in particular with regard to a material composition and/or construction and/or shape and/or size and/or a number of lamps. The light source and the further light source could have an identical number of lamps or a different number of lamps.

In addition, it is proposed that the further light source is intended to primarily emit light in a direction that is at least essentially parallel to the first direction. This allows a simple, efficient and/or compact construction to be provided. Furthermore, different orientations and/or arrangements of light sources can be dispensed with, thereby increasing efficiency in terms of product and/or cost and/or manufacturing and/or construction and/or performance and/or energy efficiency . In particular, the light source and the further light source are aligned and/or arranged in a common plane, advantageously next to one another, so that the light source and the further light source emit light in directions parallel to one another.

It is further proposed that the household appliance device has at least one further light deflecting element, which is intended to deflect light from the further light source in a direction that is different from the third direction. In this way, lighting guidance can be further improved and thus efficiency in terms of lighting can be further increased. In addition, by means of a further light deflection element, light guidance in at least one further section can be optimized and adapted to at least one orientation of the further section. This allows lighting to be improved in at least one further target area. In addition, comfort in terms of user comfort can be increased due to the improved lighting and lighting. In addition, flexibility in a light guide can be increased, since light can be deflected and/or redirected in at least two different directions by means of at least one further light deflection element, in particular depending on an orientation of at least the further section of a light guide unit.

The light deflecting element and the further light deflecting element could be designed differently from one another, for example in terms of material composition and/or construction and/or shape and/or size. Preferably these are light The steering element and the further light deflecting element are at least essentially identical to one another. Depending on the orientation and/or arrangement of the sections, in particular the section and the further section, the light deflecting elements, in particular the light deflecting element and the further light deflecting element, can also be positioned and/or arranged differently in front of the light sources, in particular the light source and the further light source be in order to preferably improve light guidance in the sections, in particular in the section and the further section.

The household appliance device and/or the household appliance should not be limited to the application and embodiment described above. In particular, the household appliance device and/or the household appliance can have a number of individual elements, components, units and method steps that deviate from the number of individual elements, components, units and method steps mentioned here in order to fulfill the functionality described herein. In addition, in the value ranges specified in this document, values that lie within the specified limits should also be considered disclosed and can be used in any way.

drawings

Further advantages result from the following drawing description. An exemplary embodiment of the invention is shown in the drawings. The drawings, description and claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further sensible combinations.

Show it:

1 shows a household appliance with a household appliance device which has a disk unit,

2 shows a housing unit and a light guide unit of the household appliance device,

3 shows a close-up view of a part of the housing unit and the light guide unit according to FIG. 2 with at least one light source of the household appliance device, 4 is a sectional side view of the household appliance according to FIG. 1,

5 shows a close-up view of the light source and a light deflecting element of the household appliance device arranged in front of the light source,

6 shows a schematic collimation by the light deflection element,

Fig. 7 is a detailed view of the light deflection element and

Fig. 8 shows a further detailed view of the light deflection element.

Description of the exemplary embodiment

The following figures are schematic and not true to scale representations. Unless otherwise stated, only one of multiple objects is provided with a reference number.

Figure 1 shows a household appliance 10 with a household appliance device 12. In the present exemplary embodiment, the household appliance 10 is designed as a hob, specifically as an induction hob. Accordingly, the household appliance device 12 is designed as a hob device. Alternatively, the household appliance 10 could also be designed, for example, as an oven, a microwave, a refrigerator, a freezer, a dishwasher, a washing machine and/or as a dryer.

The household appliance device 12 has a plate unit 14 for setting up at least one setting up unit. In this exemplary embodiment, the plate unit 14 is designed as a hob plate. Alternatively and/or additionally, the plate unit 14 could be designed at least in sections as a worktop, specifically as a kitchen worktop. The plate unit 14 forms a cooking surface for setting up at least the setting up unit. The installation unit can be designed, for example, as cooking utensils or as a small household appliance and is not shown here. The household appliance device 12 has a cooking surface area 35. In the present case, the cooking surface area 35 is a variable cooking surface area. The variable cooking surface area 35 is intended to form at least one heating zone adapted to at least the installation unit set up on the plate unit 14. A top view of the plate unit 14 of the household appliance device 12 can be seen in FIG.

The household appliance device 12 has a heating unit, which in the present case is designed as an induction heating unit. The heating unit is located below the plate unit 14. ordered (not shown). The heating unit is intended to heat at least the installation unit set up on the plate unit 14 to cook at least one item to be cooked.

The household appliance device 12 has a housing unit 56. The housing unit 56 and the plate unit 14 are connected to one another, for example by means of a force and/or positive and/or material connection, and together at least partially delimit an interior space. The heating unit is arranged in the interior of the housing unit 56. Figure 4 shows a sectioned side view of the household appliance 10 and illustrates at least one arrangement of the plate unit 14 and the housing unit 56.

The household appliance device 12 has at least one light source 16 (see Figures 3, 4 and 5). The light source 16 can have at least one lamp 32 or a plurality of lamps 32, namely at least two lamps 32. In this exemplary embodiment, the light source 16 has at least four lamps 32, only one of which is provided with a reference number. In the present case, the light source 32 includes at least one LED.

By means of light provided by the light source 16, for example, at least the cooking surface area 35 is on the plate unit 14 and/or at least one possible placement of at least the set-up unit on the plate unit 14 and/or a danger zone, for example a hot spot within the cooking surface area 35, on the plate unit 14 can be displayed for a user. The disk unit 14 has at least one target area 20, which can be illuminated by means of the light provided by the light source 16. The target area 20 on the plate unit 14 may be a partial area within the cooking surface area 35, for example a single local location in the cooking surface area 35, or the entire cooking surface area 35. In the present case, the target area 20 is shown by way of example as a local location within the cooking surface area 35 (see FIG. 1). In this exemplary embodiment, the household appliance device 12 includes at least one further target area 68 on the plate unit 14. In the present case, the further target area 68 is shown by way of example as a local location within the cooking surface area 35 (see FIG. 1). All target areas 20, 68 could be illuminated using light from the same light source 16. Alternatively, the target areas 20, 68 can receive light from different light sources 16 of the household appliance device 12 received and/or can be illuminated by means of light from different light sources 16 of the household appliance device 12.

In this exemplary embodiment, the household appliance device 12 has at least one further light source 70 (see FIG. 3). In the present case, the further light source 70 comprises at least three further lamps 66, only one of which is provided with a reference number. The further light source 66 includes at least one LED. In the present case, the lamp 32 and the further lamp 66 are designed identically to one another.

According to Figure 3, the household appliance device 12 additionally includes further light sources, which, however, are identical to the light source 16 and/or the further light source 70 and are therefore not described in more detail below.

To guide light from at least the light source 16 to at least the target area 20, the household appliance device 12 has at least one light guide unit 18. The light guide unit 18 is intended to guide light from at least the light source 16 to at least the target area 20 on the disk unit 14. The light guide unit 18 could include a variety of elements and/or units that help guide and/or direct light from at least the light source 16 to at least the target area 20 on the disk unit 14, such as optical elements.

The light guide unit 18 has at least one section 26, which is designed as a hollow light guide 28. Section 26 is intended to direct light from light source 16. The section 26 has an elongated and/or straight shape at least in sections along a main extension direction 38 of the section 26. At least section 26 is illustrated in Figures 2 to 5. In the present case, the light source 16 is at least partially arranged in the section 26 (see FIG. 5). Furthermore, at least the lamp 32 extends into the section 26. In order to illustrate the light guidance of the light by means of the light guide unit 18, namely at least the section 26, starting from the light source 16 to at least the target area 20, a light beam 53 is shown schematically in FIG. 4 as an example.

In the present case, the light source 16 is intended to emit light primarily along a first direction 60 and the section 26 extends along a second direction 62, the second direction 62 being different from the first direction 60. In order to improve lighting and increase light intensity, the house Holding device device 12 has at least one light deflection element 30, which is arranged in front of the light source 16 and in the section 26. Viewed along the main extension direction 38 of the section 26, the light deflection element 30 is arranged in front of the light source 16 (see Figures 3 to 5). Furthermore, the light deflecting element 30 is arranged in a light entry region 36 of the section 26. In the light entry area 36, the light from the light source 16 enters the section 26. In the light entry area 36, the light provided by the light source 16 hits the light deflection element 30. The light deflection element 30 is intended to direct the light from the first direction 60 into a third To deflect direction 64, which is closer to the second direction 62 than the first direction 60 (see Figures 3 and 7).

In the present case, the light deflection element 30 is designed separately from an assembly forming the light source 16. In this exemplary embodiment, the light deflection element 30 is at least partially formed in one piece with the light guide unit 18, namely the section 26.

Figures 5 to 8 illustrate an embodiment of the light deflecting element 30. The light deflecting element 30 is at least partially prism-shaped. The light deflection element 30 is at least partially prism-shaped along at least one side 95. In the present case, the side 95 is a longitudinal side of the light deflection element 30. The side 95 extends parallel to a main extension direction 96 of the light deflection element 30. That part of the light deflection element 30, which is at least partially and preferably completely prism-shaped, has a width extension 82 of in the present case at least 0.9 mm (see Figure 6).

Furthermore, the light deflection element 30 is at least partially designed in the shape of a converging lens. Along at least one further side 98, the light deflecting element 30 is at least partially designed in the shape of a converging lens. In the present case, the further side 98 is a further longitudinal side of the light deflection element 30. The side 98 extends parallel to the main extension direction 96 of the light deflection element 30. The side 95 and the further side 98 are arranged opposite one another. That part of the light deflection element 30, which is at least partially and preferably completely designed as a converging lens, has a further width extension 84 of at least 0.3 mm in the present case (cf. FIG. 6). Furthermore, the light deflecting element in this exemplary embodiment has a height extension 80 of at least 4 mm. According to Figure 3 it can be seen that the light deflection element 30 extends over at least two lamps 32 of the light source 16 arranged next to one another. In this exemplary embodiment, the light deflecting element 30 extends over the at least four lamps 32 arranged next to one another. The light deflecting element 30 has a stepped shape and a separate step is provided for each of the lamps 32. The light deflecting element 30 has the stepped shape on that side 95, on which the light deflecting element 30 is at least partially prism-shaped (cf. Figures 7 and 8).

In Figure 7, a deflection and/or redirection of a light beam starting from the lamp 32 of the light source 16 is shown schematically due to the step-shaped, prism-shaped and converging lens-shaped shape of the light deflection element 30. The lamp 32 emits light mainly in the first direction 62. The light hits a step of the light deflection element 30 on the side 95 and can be deflected and/or redirected by a first deflection angle 90. In this exemplary embodiment, the light can be deflected and/or redirected by a first deflection angle 90 of at least substantially 90°. The light that has already been deflected and/or redirected by the first deflection angle 90 can be deflected and/or redirected again on the further side 98 of the light deflection element 30, namely by a further first deflection angle 92. In this exemplary embodiment, the light is by a further first deflection angle 92 can be deflected and/or deflected by at least substantially 7°. The light deflected and/or deflected on the further side 98 of the light deflection element 30 by the further first deflection angle 92 radiates along the third direction 64. In the present case, the light deflection element 30 is at least partially designed as a collimator.

Furthermore, the light guide unit 18 has at least one further section 50, which is also designed as a hollow light guide 52 and is intended to guide light to the further target area 68 (see Figures 2 and 3). In this exemplary embodiment, the further light source 70 is intended to provide light in at least the further section 50. The further light source 70 is intended to mainly emit light in a direction that is at least essentially parallel to the first direction 60 (not explicitly shown, since the further light source 70 is arranged in a common plane in the present case, namely next to the light source 16, cf .Figure 3). The household appliance device 12 has at least one further light deflecting element 74, which is intended to deflect light from the further light source 70 in a direction 78 that is different from the third direction 64 (see FIG. 3). In the present case, the light deflecting element 30 and the further light deflecting element 74 are at least essentially identical to one another, so that reference is made to the descriptions of the light deflecting element 30. The further light deflection element 74 differs only in terms of an arrangement and/or orientation with respect to the further light source 70 from an arrangement and/or orientation of the light deflection element 30 with respect to the light source 16. The light deflection elements 30, 74 can preferably be arranged in front of the light sources 16, 70 in such a way that that light guidance in sections 26, 50 can be optimized. Depending on the orientation and/or arrangement of the sections 26, 50, the light deflection elements can also be positioned and/or arranged differently in front of the light sources 16, 70 in order to improve light guidance in the sections 26, 50.

Reference symbols

10 household appliance

12 household appliance device

14 disk unit

16 light source

18 light guide unit

20 target area

26 section

28 light guides

30 light deflection element

32 bulbs

35 cooking surface area

36 light entry area

38 main direction of extension

50 section

52 light guides

53 beam of light

56 housing unit

60 direction

62 direction

64 direction

66 bulbs

68 target area

70 light source

74 light deflection element

78 direction

80 height extension

82 width extension

84 width extension

90 deflection angle Deflection angle side Main extension direction side

Claims

Claims Household appliance device (12), in particular hob device, with at least one plate unit (14), with at least one light source (16) and with at least one light guide unit (18), which is intended to direct light from the light source (16) to a target area (20 ) on the plate unit (14), and which has at least one section (26), which is designed as a hollow light guide (28), characterized by a light deflection element (30) which is in front of the light source (16) and in the section ( 26) is arranged. Household appliance device (12) according to claim 1, characterized in that the light deflection element (30) is at least partially prism-shaped. Household appliance device (12) according to claim 1 or 2, characterized in that the light deflecting element (30) is at least partially designed in the shape of a converging lens. Household appliance device (12) according to one of the preceding claims, characterized in that the light deflecting element (30) is separate from the light source (16 ) forming assembly is formed. Household appliance device (12) according to one of the preceding claims, characterized in that the light source (16) is intended to emit light mainly along a first direction (60) and the section (26) extends along a second direction (62), wherein the second direction (62) is different from the first direction (60). 6. Household appliance device (12) according to claim 5, characterized in that the light deflecting element (30) is intended to deflect the light from the first direction (60) into a third direction (64), which is closer to the second direction (62). is as the first direction (60).

7. Household appliance device (12) according to one of the preceding claims, characterized in that the light deflection element (30) is at least partially formed in one piece with the light guide unit (18).

8. Household appliance device (12) according to one of the preceding claims, characterized in that the light source (16) has at least two lamps (32) arranged next to one another and the light deflecting element (30) extends over both lamps (32).

9. Household appliance device (12) according to claim 8, characterized in that the light deflection element (30) has a stepped shape and a separate step is provided for each of the lighting means (32).

10. Household appliance device (12) according to one of the preceding claims, characterized in that the light deflection element (30) is arranged in a light entry region (36) of the section (26).

11. Household appliance device (12) according to one of the preceding claims, characterized in that the light guide unit (18) has at least one further section (50), which is also designed as a hollow light guide (52), which is intended to direct light to a further target area (68 ) respectively.

12. Household appliance device (12) according to claim 11, characterized by at least one further light source (70) for providing light in at least the further section (50).

13. Household appliance device (12) according to claims 5 and 12, characterized in that the further light source (70) is intended to mainly emit light in a direction that is at least substantially parallel to the first direction (60). 14. Household appliance device (12) according to claim 13, characterized by at least one further light deflection element (74), which is intended to deflect light from the further light source (70) in a direction (78) which is different from the third direction (64). .

15. Household appliance (10) with at least one household appliance device (12) according to one of the preceding claims.