Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
  • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B6/00—Heating by electric, magnetic or electromagnetic fields
  • H05B6/02—Induction heating
  • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
  • H05B6/12—Cooking devices
  • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
  • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
  • H05B2206/02—Induction heating
  • H05B2206/022—Special supports for the induction coils
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
  • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

• the invention relates to a hob device according to the preamble of
• hobs which have a hob plate and a holding unit, press the individual heating units with individual spring elements on the hob plate.
• the object of the invention is in particular to provide a generic device with improved properties in terms of ease of assembly and / or component savings.
• the object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
• the invention is based on a hob device, in particular a
• Induction hob device with at least one hob plate, at least one housing unit, at least a first and a second heating unit and at least one holding unit.
• the holding unit has at least one first spring element which is provided, at least the first and the second heating unit and in particular at least one, in particular at least two, advantageously at least three, preferably at least four, further heating elements against which
• the cooktop panel has a high temperature resistance, in particular at least up to 100 ° C, advantageously at least up to 200 ° C, preferably at least up to 300 ° C on.
• the hob plate has a magnitude low linear coefficient of thermal expansion, in particular less than 1 x 10 "6 m / (NPC), advantageously less than 0.5 x 10" 6 m / (m 'K), preferably less than 0, 1 ⁇ 10 "6 m / (m « K), on.
• the hob plate of an at least glassy material, in particular borosilicate glass and / or glass ceramic formed. Alternatively, it is conceivable that the
• Hob plate is formed by a composite material.
• a "plate unit” is to be understood in particular as meaning a unit which has a maximum thickness of at least 10%, in particular not more than 3%, advantageously not more than 1% of a width and / or a depth of the plate unit plane-parallel, sides, in particular a top and a bottom, on, whose
• Each surface is at least 30%, preferably at least 40%, preferably at least 45% of a total surface area of the plate unit.
• a "housing unit” is to be understood in particular a unit which is provided, together with the hob plate an at least substantially closed receiving space for at least the heating units, the holding unit and advantageous for, the heating units supplying and / or controlling electronics to form In particular, the
• Housing unit on at least one housing shell.
• a "housing shell” is to be understood as meaning, in particular, a shell-shaped housing component.
• a “heating unit” is to be understood in particular as meaning a unit which is intended to convert energy, preferably electrical energy, into heat and to a housing
• the heating unit is intended to implement a heat output of at least 100 W, in particular at least 200 W, advantageously at least 300 W, particularly advantageously at least 500 W, preferably at least 1000 W, in at least one operating state.
• the heating unit is designed as an induction heating unit.
• an “induction heating unit” should in particular be understood to mean a heating unit which is intended to generate an electromagnetic alternating field, in particular with a frequency between 20 kHz and 100 kHz, which is intended to be arranged in an erected, in particular metallic, preferably ferromagnetic,
• the heating unit has at least one heating element and a carrier element which is intended to carry the heating element
• a “holding unit” being understood to mean in particular a unit provided for this purpose is, at least in a mounted state, at least to hold the heating elements and / or to press against the hob plate.
• a "spring element” should in particular be understood to mean an element which has at least one partial region which, in a normal operating state, is at least 3 mm, preferably at least 5 mm, at least in its position at least 8 mm, is elastically changeable, and in particular one of a
• Variation of the position produces dependent and preferably proportional to the change counterforce, which counteracts the change.
• the spring element provided to be elastically deformed during a mounting of the hob plate, in particular deflected to be.
• the spring element is at least partially formed, preferably hardened, spring steel.
• the spring element is formed from a plastic.
• the spring element has a material thickness of at least 0.5 mm, in particular at least 0.75 mm, and of not more than 4 mm, in particular not more than 3 mm, advantageously not more than 2 mm.
• the spring element is designed as a spring wire, alternatively as a spring band.
• the spring element is designed as an elongated spring element, wherein a length of a longest connecting path connecting two points of the spring element, in particular at least 30%, advantageously at least 50%, preferably at least 70% of a length of a shortest connecting line, the two endpoints of
• Spring element connects, and extends only within the spring element. In particular, a component savings and / or a space saving can be achieved.
• the housing unit forms an interior which is at least partially covered by at least the first spring element.
• the spring element "partially straddles" an interior, it should be understood in particular that the spring element extends over a partial distance of at least 20%, in particular at least 40%, advantageously at least 60%, preferably at least 80%, of an extension, in particular of a width and / or a depth of the inner space, without touching the housing unit within this partial section, In particular, the spring element spans at least one narrow side of the housing
• Spring element has a substantially diagonal orientation.
• the spring element bridges an interior of the housing unit.
• the spring element has an angle of at least 1 °, advantageously at least 3 °, preferably at least 5 ° and in particular at most 25 °, advantageously at most 20 °, at least in an unassembled state of the cooktop panel at end points of the subsection preferably at most 15 °, with respect to a horizontal.
• a space saving can be achieved.
• the spring element is fixed to at least one side wall of the housing unit.
• the spring element is fixed to two, in particular opposite, side walls, wherein it spans in particular an inner space between the side walls, in particular between attachment points on the side walls.
• a "sidewall” is to be understood as meaning, in particular, a part of the housing unit which has an at least substantially vertical orientation, at least in a standard operating state Having perpendicular, which deviates less than 30 °, in particular less than 10 °, advantageously less than 3 °, preferably less than 1 °, from 0 °.
• the side wall on at least one positive locking element in particular at least one plug-in receptacle, which is intended to produce a positive connection with the spring element.
• the spring element is provided in the at least one plug-in receptacle, in particular tab, to be inserted, wherein in particular a bottom plate of the
• Housing unit serves as a stop.
• a space savings can be achieved.
• the spring element is fixed to a bottom plate of the housing unit.
• at least one is on the bottom plate
• Plug element in particular a hollow cylinder arranged, which is intended to receive the spring element.
• the heating units each have at least one latching element, which is intended to connect to the at least one
• a "latching element” is to be understood in particular to be an element which is elastically deflected during a fastening process, in order subsequently to engage by an internal clamping force behind a corresponding latching element.
• the holding unit has at least one second spring element which is provided, at least the first and second heating unit and in particular at least one, in particular at least two, advantageously at least three, preferably at least four, further heating elements to press simultaneously against the hob plate.
• the second spring element is similar, in particular symmetrical, formed to the first spring element.
• the first and the second spring element are arranged side by side.
• embodiments are conceivable in which the spring elements intersect.
• improved stability can be achieved.
• an increased clamping force can be provided.
• the hob device has at least four, in particular at least six, in particular at least eight, advantageously at least ten
• Spring elements which are preferably at least similar, in particular symmetrical, formed to the first spring element.
• heating units which are pressed by the first spring element against the hob plate, are also pressed by the second spring element against the hob plate.
• the hob device has at least a third spring element, and that heating units are pressed by the first spring element against the hob plate, in particular alternately, either from the second or by the third spring element pressed against the hob plate.
• a simple and / or stable construction can be achieved.
• At least the first spring element has at least one bulge which is directed at least substantially parallel to a main plane of the cooktop plate.
• the bulge follows a circular arc, in particular, the bulge has a width of at least 1 cm, in particular at least 1.5 cm, advantageously at least 2 cm, and / or a length of at least 3 cm, in particular at least 5 cm, advantageously at least 6 cm.
• a principal plane "of an element is to be understood in particular as a plane which has a minimum square Distance to all points of the element.
• a main plane of the bulge or of the spring element is at least substantially parallel to the main plane of the cooktop plate, in particular the bulge is intended to fix a position of one of the heating elements
• the bulge is intended to contract during an elastic deformation of the spring element during assembly of the hob plate and in particular to clamp a heating unit arranged therein. It can in particular an enlarged ßerte support surface for the heating elements are provided. In particular, a secure and / or simple assembly can be achieved.
• At least the first and the second spring element each have at least one bulge, wherein the bulges are at least substantially opposite to each other.
• oppositely opposed should be understood in particular that a direction of buckling of the first spring element is opposite to a direction of buckling of the second spring element, wherein start or end points of the bulges not more than 2 cm, in particular at most 1 cm, preferably at most 0 , 5 cm, preferably at most 0.2 cm, are away from a plane which intersects both spring elements at least substantially perpendicularly
• the formations each follow a circular arc of the same circle.
• the bulges together are intended to support and / or receive a heating unit.
• a large contact surface for the heating unit can be provided.
• a simple construction can be achieved.
• the heating elements form a variable cooking surface at least in one operating state.
• a “variable cooking surface” is in particular a cooking surface be understood, which is intended to form at least one adapted to at least one set cooking dishes cooking zone.
• the variable cooking surface differs from a cooking surface in the cooking zones, in particular by markings on the cooking surface, are fixed.
• the variable cooking surface is formed by at least one heating element matrix.
• a "heating element matrix” is intended in particular to mean a preferably two-dimensional, advantageously regular arrangement, in particular in a square or hexagonal pattern, of at least four, in particular at least ten, advantageously at least twenty
• variable cooking surface has at least one sensor unit, which is formed in particular by the heating elements themselves, which is intended to detect cooking utensils arranged, in particular by measuring at least one inductance and / or at least one capacitance.
• the variable cooking surface is provided to associate a detected cooking utensil with a shape, size and / or position adapted cooking zone.
• the variable cooking surface has at least one control unit which is provided to evaluate measured values of the sensor unit, to calculate at least one cooking zone and to determine heating elements which form this cooking zone.
• an advantageous construction can be achieved. Especially with variable cooking surfaces offers, due to the large number of
• Heating units a large inventively possible savings in components
• FIG. 1 shows an induction hob according to the invention in a view from above
• FIG. 2 shows a sectional view along the line II-II in FIG. 1 in a state before completed assembly
• FIG. 1 shows an induction hob according to the invention in a view from above
• FIG. 2 shows a sectional view along the line II-II in FIG. 1 in a state before completed assembly
• Fig. 3 is a detail view of the hob device in a view from above and Fig. 4 is a perspective view of a holding unit of the hob according to the invention.
• FIG. 1 shows a cooktop 10, designed as an induction cooktop, with a cooking surface 10 as an induction hob
• Induction hob device designed hob device 12.
• Hob device 12 has a hob plate 14 and a housing unit 16.
• the hob plate 14 is formed of glass ceramic.
• the hob plate 14 has a substantially square basic shape with rounded corners.
• the hob device 12 has forty heating units 18.
• the heating units 18 form a variable cooking surface in the form of a heating element matrix.
• the hob device 12 has a holding unit 20 (FIGS. 2 to 4).
• the holding unit 20 has 16 spring elements 22, 24, 26, 28, each carrying a first, a second and three more of the heating units 18 and press in an assembled state of the hob plate 14 at the same time against the hob plate 14.
• the housing unit 16 forms an inner space 30, which is spanned by the spring elements 22, 24, 26, 28.
• the spring elements 22, 24, 26, 28 are fixed to opposite side walls 32, 34 of the housing unit 16.
• the side walls 32, 34 each have in a punching and molding process manufactured, tab-like plug-in receptacles 36, 38.
• the plug-in receptacles 36, 38 are arranged in two different heights.
• Plug receptacles 36, 38 are provided to receive the spring elements 22, 24, 26, 28.
• the spring elements 22, 24, 26, 28 are formed from spring wire.
• the spring elements 22, 24, 26, 28 are each formed as a torsion spring with two firmly clamped ends.
• the spring elements 22, 24, 26, 28 are inserted through an assembly by the plug-in receptacles 36, 38 and strike a housing bottom 17 of the housing unit 16 at. All of the heating units 18 are in a mounted state of the hob plate 14 of each exactly two spring elements 22, 24 and 26, 28 against the hob plate 14 is pressed.
• the heating units 18 are each of pairs of
• Spring elements 22, 24, and 26, 28 pressed against the hob plate 14.
• the pairs of spring elements 22, 24 and 26, 28 each carry five heating units 18.
• the arranged at the same height plug receptacles 36, 38 of a pair of spring elements 22, 24 and 26, 28 each have a distance from each other, which is smaller, as a distance of the plug-in receptacles 36, 38 of two juxtaposed pairs of
• Spring elements 22, 24 and 26, 28th The spring elements 22, 24, 26, 28 each have five bulges 42, 44, 46, 48, which are directed in a mounted state of the hob plate 14 parallel to a main plane of the hob plate 14.
• the bulges 42, 44 and 46, 48 of the pairs of spring elements 22, 24, and 26, 28 are opposite to each opposite.
• the oppositely directed, opposite bulges 42, 44, and 46, 48 each follow circular arcs of the same circles.
• the heating units 18 each have four latching elements 50.
• the latching elements 50 are arranged on an underside of a carrier element of the heating units 18.
• Locking elements 50 are provided to make a connection with the spring elements 22, 24 and 26, 28.
• the locking elements 50 surround the spring elements 22, 24, 26, 28 in the region of the bulges 42, 44 and 46, 48 from the inside.
• the spring elements 22, 24, 26, 28 bulge outwardly beyond the interior 30.
• the bulges 42, 44 and 46, 48 of different pairs of spring elements 22, 24 and 26, 28 are arranged at different distances to the side walls 32, 34.
• Spring elements 26, 28 are rotated by 180 ° about the vertical axis variants of
• Spring band in particular a band of spring steel, are formed and / or that groups of heating elements are each supported by a single spring element and pressed against a hob plate.
• Spring elements are worn, wherein a number of spring elements is smaller than a number of heating units.

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• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Induction Heating Cooking Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

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Cited By (2)

Citations (5)

• 2013
  • 2013-09-23 WO PCT/IB2013/058767 patent/WO2014045251A1/fr not_active Ceased

Patent Citations (5)

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