EP2431666B1 - Kochfeldvorrichtung - Google Patents

Kochfeldvorrichtung Download PDF

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Publication number
EP2431666B1
EP2431666B1 EP11179170.3A EP11179170A EP2431666B1 EP 2431666 B1 EP2431666 B1 EP 2431666B1 EP 11179170 A EP11179170 A EP 11179170A EP 2431666 B1 EP2431666 B1 EP 2431666B1
Authority
EP
European Patent Office
Prior art keywords
heating element
heizelementträgereinheit
hob
spring
bending point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11179170.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2431666A3 (de
EP2431666A2 (de
Inventor
Sara Alonso Molina
Sandra Aranda Vazquez
Diego Dionisio Micolau
Ignacio Garde Aranda
Damaso Martin Gomez
Adolfo Martin Muñoz
Maria Elena Moya Albertin
Pilar Perez Cabeza
Carmelo Pina Gadea
Jose Luis Salvador Lacosta
María Valencia Betran
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL11179170T priority Critical patent/PL2431666T3/pl
Publication of EP2431666A2 publication Critical patent/EP2431666A2/de
Publication of EP2431666A3 publication Critical patent/EP2431666A3/de
Application granted granted Critical
Publication of EP2431666B1 publication Critical patent/EP2431666B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • 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
    • 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
    • H05B6/1263—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements using coil cooling 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

Definitions

  • the invention relates to a hob device according to the preamble of claim 1. It is known in induction hobs to attach heating elements in the form of inductors on a Schuelementaboiser made of aluminum and to press them by means of a spring force against a cooktop plate made of glass ceramic.
  • the publication DE 23 51 249 A1 discloses an electric cooker according to the preamble of claim 1 with a flat hearth covering the entire hearth surface.
  • the stove is made of stainless steel and at the bottom it is plated with saucepan-sized metal plates.
  • the Utility Model DE 20 2005 016 787 U1 discloses a device for heating food with a heating device, which has a heating element and a planar functional element arranged thereon, and with a supply connection which supplies the heating device with energy.
  • the heater is detachable from the supply port and the functional element is detachable from the heater.
  • the publication WO 2008/148769 A2 discloses a cooker with an upper plate made of glass or ceramic.
  • the cooking range also has at least one heating device arranged under the upper plate, which is arranged below the upper plate.
  • the cooking stove has a lower plate made of a metal, which is disposed below the upper plate to define a closed volume in which the heating device, electrical and mechanical elements and electrical connections are included.
  • One or more springs are attached to the bottom plate and the heater and cause the heater to abut the top plate to maintain full surface contact.
  • the publication US 4 031 353 A discloses a radiant heater having a metal hotplate formed with at least one bulged portion separated from is surrounded by a flat transversely extending peripheral flange. Each of the bulged portions has a concavely curved inner surface and a convexly curved outer heat radiating surface.
  • each bulged portion is covered with a vitreous enamel coating and a printed electrical heating element circuit is applied to the enamel coating.
  • a circumferential transition area is provided adjacent to the bulged portions and its surrounding flange. The transition regions are shaped to provide tension to the thermal deformation of the heating plate so that the enamel coating is compressed, thereby increasing the dielectric resistance of the coating.
  • the publication DE 87 02 478 U1 discloses a cooking appliance with an upper mounting plate and at least one arranged in an opening of the mounting plate electric hotplate, which has a recess in the region of its outer lower edge and a holding element which sets the electric hotplate by bracing down into the opening and with at least one effective against rotation between the electric cooking plate and the holding element.
  • the anti-rotation element is provided on the holding element, elastically movable tongue, which cooperates with the recess.
  • the object of the invention is in particular to provide a generic hob device with increased robustness. 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 with a Schublementmikiser, which is provided for a support of at least one heating element, wherein the Schuelementdisposed has at least one area with at least one predetermined bending point.
  • heating element carrier unit is to be understood in particular a unit to which at least one heating element is fixed in a mounted state with fastening means, in particular by a screw connection and / or a latching connection, and / or supported by the bearing forces of the heating element.
  • the heating element carrier unit preferably has a main extension plane and is advantageously formed by an at least substantially flat plate.
  • the Schuelementschihim is made of a stamped and bent sheet metal part and is preferably at least for the most part of a non-magnetic metal, in particular aluminum when used in an induction hob.
  • a "non-magnetic" metal is to be understood as meaning, in particular, a metal having a permeability of not more than 1.1 and preferably not more than 1.0001.
  • a “heating element” is to be understood in particular an element which is intended to convert electrical energy into heat.
  • the heating element is a resistance heater or a radiant heater or preferably an induction heater, which is intended to convert electrical energy indirectly via induced eddy currents into heat.
  • a "predetermined bending point” is to be understood, in particular, as meaning a location of the heating element carrier unit which has a stiffness which is deliberately reduced in relation to a bending moment compared to another point.
  • the predetermined bending point is characterized by a deliberately reduced area moment of inertia.
  • the predetermined bending point is a line along the main extension plane of the Schuelementmikawa and in particular from a first edge of the Schuelement disposiser to a second edge of the Schuelement disposaji, which is particularly advantageous in bending the Schuelement disposiser in response to a force a crest line of the bent main extension plane of the Schuelementriad.
  • the predetermined bending point is in particular that point of the Schuelementziiser, which undergoes a maximum deformation at a force.
  • a cooktop device can be provided with an increased robustness compared to conventional cooktop devices, as when a force acting on the Schuelementziiser, especially in a drop test of a hob with a hob invention, bending takes place at the predetermined bending point and can be intercepted there by suitable means .
  • existing Schuelementicaticianen adapted for operation with a heavier heating element, in particular an induction heater.
  • the cooktop apparatus comprises a force reduction unit which is provided to reduce a torque acting on the intended bending point of the Schuelementliniiser under a mechanical stress.
  • a "force reduction unit” is to be understood, in particular, as a unit other than the heating element carrier unit, which is arranged parallel to the predetermined bending point in terms of a bending moment in the force flow, so that a torque acting on the heating element carrier unit is distributed to a region of the predetermined bending point and to the force reduction unit.
  • the power reduction unit has at least one spring element.
  • a "spring element” is to be understood in particular an element that reacts to an action of a force with a change in length and / or deflection in the direction of the force and generates an equal counterforce.
  • the spring element is provided, in a mounted state at a bending load around the predetermined bending point, an elastic change in length and / or deflection of at least 0.25 mm, in particular of at least 0.5 mm, preferably of at least 1 mm and more preferably of at least 2 mm to execute.
  • a typical mechanical stress of the spring element in particular during a drop test of a hob with a hob device according to the invention, remains below a threshold of elasticity of the spring element above which an irreversible deformation of the spring element occurs.
  • an irreversible deformation of the Schuelementzihim can be avoided structurally simple and inexpensive and the robustness of the hob device can be increased.
  • the heating element carrier unit can be returned to its original shape after the action of a bending moment.
  • manufacturing tolerances of the Schuelementizitician can be compensated, so that in particular with an induction hob, a gap-free contact between an induction heating and a hob plate can be achieved.
  • material can be saved and less costly material can be used for the heater support unit.
  • the spring element consists of a spring steel and particularly advantageous a galvanized spring steel of the type EN 10270-1-SH. This can save costs.
  • the spring element is formed by a bow spring.
  • a “bow spring” should in particular be understood to mean a substantially rod-shaped component which preferably has at least one bend.
  • a "rod-shaped component” is to be understood in particular as a component whose axial longitudinal extent is at least 5 times, in particular at least 10 times, advantageously at least 15 times and particularly advantageously at least 20 times greater than each transverse extent, preferably perpendicular to the longitudinal extension of the component.
  • the bow spring preferably has at most two and preferably at most one closed contour and is in particular different from a pure helical spring.
  • a spring effect of the bow spring results in particular in the case of a mechanical load on the bow spring in the direction of the transverse extent.
  • the spring element extends over the predetermined bending point.
  • the spring element in a mounted state has a bias.
  • the spring element in a mounted state has a bias
  • the spring element in a mounted state exerts a force different from a gravitational force, in particular on the Schuelementzihimiser exerts.
  • the spring element in a mounted state has a different geometric shape than in a unmounted state.
  • the spring element is changed in an assembled state against an unmounted state by at least 0.25 mm, in particular by at least 0.5 mm, preferably by at least 1 mm and particularly advantageously by at least 2 mm in its extension and / or deflected.
  • the heating element carrier unit has a concave receiving region for the at least one heating element and the spring element is arranged at least partially in the receiving region.
  • a "concave receiving region for the at least one heating element” is to be understood in particular a region of the heating element carrier unit which is provided for receiving at least one heating element and which at least partially surrounds the receiving region.
  • a “surface normal" of a surface is to be understood in particular as a straight line which is perpendicular to the surface.
  • the spring element is at least partially arranged in the receiving area” should be understood in particular that at least parts of the spring element are arranged in the receiving area and preferably a major part of the spring element is arranged in the receiving area.
  • a “majority of the spring element” is to be understood here in particular as a part of the spring element which makes up at least 60%, in particular at least 70%, preferably at least 80% and particularly advantageously at least 90% of a total mass of the spring element.
  • the heating element carrier unit has at least one recess which causes at least in part an increased flexibility in a partial region of the predetermined bending point.
  • a "recess” is to be understood in particular as a material recess, preferably on an edge of the heating element carrier unit.
  • the Schuelementzitician has at least one parked edge in which the at least one recess is arranged.
  • a "parked edge” is to be understood in particular a bent edge of the Schuelementziiser, preferably with the main extension plane of the Schuelementziiser an angle between 60 ° and 120 °, in particular between 75 ° and 105 °, advantageously between 85 ° and 95 ° and particularly advantageous of 90 °.
  • the Schuelement herein is made of a stamped and bent sheet metal part and the parked edge formed by deep drawing of the edge zone of the punching and bending sheet metal part. In this way, a particularly large difference between a rigidity of the predetermined bending point and the rigidity of a location of the heating element carrier unit which differs from the predetermined bending point can be achieved.
  • Fig. 1 shows a cooktop apparatus of an induction cooktop with a Walkerelementzitician 10, which is provided for a support of two heating elements, and this includes a concave receiving portion 22 for the heating elements.
  • the Schuelementriad 10 represents a substantially flat plate having a substantially rectangular outline with rounded corners.
  • the Schuelementzitician 10 has a plurality of recesses 27, which are provided for attachment of the heating elements, to a passage of power supply lines and to a mounting of the Schuelementriad 10 itself.
  • the Schuelementriad 10 consists of an aluminum sheet with a thickness of 1.2 mm.
  • the Schuelementzitician 10 is formed from a stamped bending plate part.
  • the heating element carrier unit 10 comprises a peripheral, parked edge 26.
  • the heating element carrier unit 10 has a predetermined bending point 14, at which the heating element carrier unit 10 preferably bends under mechanical stress.
  • the predetermined bending point 14 represents a desired bending axis 29 of the heating element carrier unit 10, which extends along a shortest distance from a first edge 28 to a second edge 30 of the heating element carrier unit 10.
  • To increase the flexibility of the Schuelementlinitician 10 in a portion of the predetermined bending point 14 has a rectangular recess 24 which is disposed in the parked edge 26 (see Fig. 3b ).
  • the parked edge 26 is slotted in a region of the recess 24 and then bent inwards in the direction of the receiving region 22, so that two wings 42, 44 arise (see Fig. 1 and Fig. 3b ).
  • the cooktop device on a power reduction unit 16, which is intended to reduce a force acting on the predetermined bending point 14 of the Schuelementziappel 10 torque under mechanical stress.
  • the power reduction unit 16 a spring element 18, by a bow spring 20 is formed.
  • the bow spring 20 consists of a bent rod-shaped component made of spring steel of the type EN 10270-1-SH.
  • the bow spring 20 has two legs 32, 34, which enclose an angle of approximately 170 ° in an unassembled, relaxed state and are separated by a middle piece 40.
  • the middle piece 40 consists of two short bars 46, 48 compared to the legs 32, 34, which in an unassembled, relaxed state enclose an angle of approximately 100 °.
  • the web 46 includes with the leg 32 at an angle of 145 °.
  • the web 48 includes with the leg 34 at an angle of 145 °.
  • the two webs 46, 48 of the middle piece 40 lie in a first plane which is perpendicular to a second plane which contains the legs 32, 34 (see FIG Fig. 2c ).
  • close to the legs 32, 34 angled plug ends 36, 38 which lie in the second plane.
  • the plug-in ends 36, 38 are intended to be plugged into specially provided for this purpose plug holes 50, 52 in the Schuelementlinitician 10.
  • the spring element 18 extends beyond the predetermined bending point 14.
  • the spring element 18 is arranged completely in the receiving area 22 except for its center piece 40.
  • the middle piece 40 of the spring element 18 is mounted with prestress under the wings 42, 44.
  • the mating ends 36, 38 are inserted into the plug holes 50, 52 of the heater support unit 10 and project minimally through the heater support unit 10 (see FIG Fig. 3a ).
  • Due to the bias the legs 32, 34 and the middle piece 40 of the spring element 18 are in an assembled state directly to the Schuelementzitician 10 at. In an assembled state, the legs 32, 34 and the middle piece 40 of the spring element 18 are arranged in a plane which is parallel to a main extension plane of the Schuelementziappel
  • the heating element carrier unit 10 Compared with a mechanical load, the heating element carrier unit 10 exhibits a minimum rigidity with a torque acting in the direction of the desired bending axis 29 (see FIG Fig. 1 ). In a torque acting in the direction of the desired bending axis 29, the heating element carrier unit 10 is bent in the region 12 about the desired bending axis 29. A part of the torque acts on the bow spring 20. Thus, an irreversible deformation of the Schuelementlinitician 10 in the area 12 can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Baking, Grill, Roasting (AREA)
EP11179170.3A 2010-09-15 2011-08-29 Kochfeldvorrichtung Active EP2431666B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11179170T PL2431666T3 (pl) 2010-09-15 2011-08-29 Urządzenie płyty kuchennej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201031377A ES2388164B1 (es) 2010-09-15 2010-09-15 Dispositivo de campo de coccion.

Publications (3)

Publication Number Publication Date
EP2431666A2 EP2431666A2 (de) 2012-03-21
EP2431666A3 EP2431666A3 (de) 2017-10-18
EP2431666B1 true EP2431666B1 (de) 2019-02-27

Family

ID=44534057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11179170.3A Active EP2431666B1 (de) 2010-09-15 2011-08-29 Kochfeldvorrichtung

Country Status (3)

Country Link
EP (1) EP2431666B1 (pl)
ES (2) ES2388164B1 (pl)
PL (1) PL2431666T3 (pl)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2351249A1 (de) * 1973-10-12 1975-04-17 Buderus Eisenwerk Elektroherd
LU72228A1 (pl) * 1974-04-11 1975-08-20
DE8702478U1 (de) * 1987-02-18 1988-06-16 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Kochgerät
FR2726350B1 (fr) * 1994-10-14 1997-01-10 Eurokera Plaques pliees en vitroceramique, plaques de cuisson comportant une telle plaque pliee et procede de fabrication d'une plaque pliee en vitroceramique
FR2735562B1 (fr) * 1995-06-19 1997-08-14 Eurokera Plaque de cuisson au gaz en vitroceramique et procede pour sa fabrication
FR2777559B1 (fr) * 1998-04-16 2000-07-13 En Nom Collectif Eurokera Soc Fabrication de plaques vitroceramiques a ouverture(s) au pourtour deforme ; plaques vitroceramiques deformees
DE202005016787U1 (de) * 2005-10-25 2006-01-05 Hochschule für Künste Bremen Vorrichtung zum Erwärmen von Speisen
WO2008148769A2 (en) * 2007-06-04 2008-12-11 Arcelik Anonim Sirketi A cooking range
EP2144007B1 (en) * 2008-07-09 2015-09-02 Electrolux Home Products Corporation N.V. A supporting bracket for supporting a radiant heating device above a bottom panel of a cooking hob

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2388164A1 (es) 2012-10-09
ES2716237T3 (es) 2019-06-11
EP2431666A3 (de) 2017-10-18
PL2431666T3 (pl) 2019-08-30
EP2431666A2 (de) 2012-03-21
ES2388164B1 (es) 2013-09-02

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