EP2056650B1 - Support pour un dispositif de chauffage électrique, dispositif de chauffage électrique et procédé de fabrication d'un dispositif de chauffage électrique - Google Patents

Support pour un dispositif de chauffage électrique, dispositif de chauffage électrique et procédé de fabrication d'un dispositif de chauffage électrique Download PDF

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Publication number
EP2056650B1
EP2056650B1 EP08017879.1A EP08017879A EP2056650B1 EP 2056650 B1 EP2056650 B1 EP 2056650B1 EP 08017879 A EP08017879 A EP 08017879A EP 2056650 B1 EP2056650 B1 EP 2056650B1
Authority
EP
European Patent Office
Prior art keywords
support
electrical
heating device
klixon
heating element
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.)
Not-in-force
Application number
EP08017879.1A
Other languages
German (de)
English (en)
Other versions
EP2056650A3 (fr
EP2056650A2 (fr
Inventor
Karl-Heinz Horsmann
Eugen Wilde
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP2056650A2 publication Critical patent/EP2056650A2/fr
Publication of EP2056650A3 publication Critical patent/EP2056650A3/fr
Application granted granted Critical
Publication of EP2056650B1 publication Critical patent/EP2056650B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • 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
    • H05B3/688—Fabrication of the plates
    • 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
    • H05B2213/04—Heating plates with overheat protection means
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49083—Heater type

Definitions

  • the invention relates to a support for an electric heater, which consists of insulating material and on the upper side at least one heating element is arranged.
  • the heating element is elongated and runs in tracks on the top of the carrier.
  • the invention relates to an electric heater with such a carrier and a method for producing such an electric heater.
  • an electric heating device with a carrier is known, are arranged on the heating elements, wherein a temperature sensor is provided.
  • the temperature sensor is inserted as an elongated sensor from below or from the side into the heater and protrudes with a sensor end having a temperature sensor in the heating zone above the carrier.
  • thermohydraulic temperature controller in the central region of an electric heater. This is pressed from below in a guide resiliently upwards against the underside of a hob plate on the heater for good thermal contact.
  • an induction heating device which has an electrical temperature sensor in a central region.
  • Another electric heating device which has a contactless pot detection.
  • a proximity switch with sensor elements is provided, which are arranged in a central region of the heating device and are directed from below against a hob plate above the heating device.
  • the invention has for its object to provide a support mentioned above, an electric heater with such a carrier and a method for producing such a heater with which problems and disadvantages of the prior art can be avoided and in particular in the simplest possible way a kind of temperature sensor or a Klixon can be provided.
  • an opening is provided in a central region of the carrier, through which a so-called Klixon can be introduced or pushed through.
  • the term klixon is to be understood in this application generally a thermally actuated switch, which is triggered by thermally triggered spring means, advantageously a bimetal snap-action disc, thereby opening a contact, so interrupts the power line when a certain temperature is exceeded. This particular temperature is determined by the formation of the bimetallic snap disk.
  • the following is for the term Metal snap disc set.
  • Klixon should be used for this purpose, but without limiting the scope of protection of the application. At the top, the Klixon protrudes over the opening with side projections in the manner of wings, preventing it from falling through.
  • the Klixon can be inserted in the opposite direction from bottom to top, and then the said lateral projections are bent at the top as a safeguard against falling out.
  • the Klixon can be resiliently attached to the carrier, for example by means of the aforementioned lateral wings odgl.
  • This type of attachment can be chosen for both a Klixon and for two Klixons, if two such switches should be needed for two different temperature switching points. Furthermore, a kind of double Klixon can be mounted in this way be contained in a housing two Klixons and has four electrical connections.
  • An aforementioned Klixon is used for a residual heat indicator of the heater, especially when used in a cooktop.
  • Another Klixon can serve as overtemperature protection not to exceed a temperature of 175 ° C on the top of a ceramic hob plate of the hob, since such keep-warming radiators are usually operated not clocking, but are operated permanently with a constant power after switching ,
  • the carrier is particularly advantageous entirely made of insulating material. It may advantageously be designed in the manner of a flat plate or a disk with a peripheral edge at the top. This edge can survive a little over the heating elements or the paths provided for them and the side walls of the webs, for example a few millimeters. Furthermore, such a peripheral edge can survive even over the set on the top prescribed Klixon, so that no extra recesses must be made for this. The edge should then rest against the underside of a hob plate.
  • the underside of the carrier may be substantially flat.
  • at least one projecting attachment region can be provided on its underside, which is preferably integrally formed, that is, produced at the same time, wherein it can alternatively also be subsequently attached, for example adhesively bonded.
  • Particularly advantageous two such mounting areas are provided on the underside, which are in particular the same design.
  • Such a fastening region projects over at least the underside of the carrier, possibly also over the side edge. It serves, for example, the carrier or the electric heating device constructed with it as a hotplate to a hob under a glass ceramic hob plate to attach.
  • the attachment region has at least one prefabricated opening into which a fastening screw or the like. can be screwed. It is also possible to provide a plurality of such openings in order to allow a different positioning with fine adjustment of the carrier.
  • the carrier may be formed relatively thin, for example, be about 10mm to 15mm thick.
  • the thermal insulation is sufficiently ensured, especially if the finished heater does not cause excessive temperature development. This is the case in particular when the heating device is designed as a so-called heated radiator. This means that in a food preparation, no large energy inputs are possible, but a provided with this heater cooking surface on a hob for keeping warm pots and the food is used.
  • the power of the heating element or the heating device can be between 100 watts and 150 watts, in particular with a power density for the carrier of 0.6 W / cm 2 .
  • Connections of the heating element to the electrical connection can advantageously be guided in a central region of the carrier with distance from the outer edge so that they extend from an upper side of the carrier through the carrier to a lower side and are easily accessible there for electrical contacting or for mechanical fastening.
  • the mechanical attachment is achieved through the electrical connection, so to speak.
  • a simple electrical connection can be achieved, which does not necessarily have to be at the edge, as is usual with other radiant heaters or similar heating devices, but in the middle area.
  • the connections are mechanically secured or secured against movement by the surrounding material of the carrier.
  • it can be prevented by attaching the leads or connecting cables, that the connections move back again or the heating element dissolves in this area of the carrier.
  • An electrical connection in the middle of the underside of the carrier is also more accessible in many cases than on an outside of the heater.
  • connection cables can be brought laterally or approximately parallel to the underside of the carrier to the terminals of the heating elements and then connected to these, preferably welded. Especially when the brought up connecting cables cross the connections of the heating elements such that they protrude to the two sides over the opening for passing through the connections and securely and reliably secure the connections against being moved back. Due to the compliance of the carrier, at least when made of a suitable insulating material, the terminals of the heating elements can also be bent at least 30 ° to 45 °, and then connected to the connecting cables.
  • the tracks for the heating elements are recessed in the carrier and have, at least in sections, side walls which in particular run relatively close to the heating element.
  • the side walls or portions of the side walls are adapted to secure the heating elements in the webs against lifting from the carrier by being pressed in such a way that they also incline over the web at least on one side for engaging both the web and Also, the heating element therein to secure it against lifting from the carrier.
  • a retaining sidewall portion is not laterally adjacent to the heating element, but overlaps it from above. Although he can rest against the heating element, it is however unnecessary. While only a non-positive retention of the heating element in the web is possible by lateral pressing against the heating element, by a spreading of the side wall portions a positive mounting is possible, which holds much better. This is from the aforementioned EP 612 197 A1 known.
  • the heating element may be formed in the form of coiled wire, in particular round-spiraled, and pressed wide from above. So it is with pressure on the side wall areas, which causes the same holding effect as described above. Under certain circumstances, it is also something pressed into the side wall areas for even better support.
  • Fig. 1 is an oblique view obliquely from above on a support 11 is shown.
  • the plate or disc-like carrier 11 has an upper side 12 and a lower side 13. At the top 12 extends around a slightly raised edge 14.
  • the carrier 11 is made of suitable material in one piece in a single pressing operation.
  • tracks 16 are formed, which go slightly deeper than half the thickness of the wearer.
  • the tracks run meandering for a heating element with a few turns and start and end in a central area.
  • at least one hole 17 a can be seen, which leads at the end of the web 16 through the carrier 11 to its underside 13.
  • an opening 22 is provided in the central region.
  • the webs have different portions as extended portions 19 and protrusions 20 therebetween.
  • the supernatants 20 serve to be pressed into the tracks after insertion of the heating element and then move over the web for reaching over and holding the heating element.
  • Fig. 2 is a plan view of an electric heater 23 is shown, which consists of a carrier 11 according to Fig. 1 consists, in which a heating element 24 is inserted in the webs 16.
  • the heating element 24 consists of round-wound heating wire, for example of a FeCrAl alloy. Terminals 26a and 26b are inserted through the respective holes 17a and 17b at the beginning and end of the tracks 16, as are the holes Fig. 3 better shows.
  • Pressure is exerted on the supernatants 20 from above, so that they are further deformed and tilt inward or are pressed inwards over the tracks 16 and thus also over the heating elements 24 located therein. In so doing, they can touch the heating elements 24 when reaching over but they do not necessarily have to.
  • a Klixon 28 is inserted from above into the opening 22, advantageously after the insertion of the heating elements 24 and pressing.
  • projecting lateral projections 30a and b on the opening 22 and lie on the top 12 of the carrier 11. They may also be pressed into corresponding recesses, so that the Klixon 28 does not protrude beyond the plane of the top 12, that is sunk.
  • Fig. 3 shows in section. It will be appreciated that the projections 20 protrude above the heating elements 24, at least where provided, and mechanically support them. Furthermore, it can be seen how at least one connection 26a extends through the hole 17a in the support 11 to the underside 13. Here, a connection cable 27 is brought to the end of the connection 26a projecting beyond the underside 13 and welded. Thus, not only an electrical contact, but also a mechanical attachment of the terminal 26a against moving back. The same thing happens at the other terminal 26b. A connection 29a of the Klixon is also shown and projects obliquely over the underside 13.
  • a protruding mounting dome 31 is shown, which may be integrally formed in particular integrally on the carrier 11 as a further embodiment of the invention. It has two mounting holes 32 on an underside, which are designed so that conventional fastening screws can engage and thereby themselves cut a thread.
  • two such attachment domes 31 are provided, in particular on opposite outer regions of the support 11.
  • a Klixon inserted from the upper side 12 in the opening 22 28 on the bottom 13 with its terminals 29a and 29b is not only accessible for electrical contact, for example by plugging or welding. It can also be seen how the terminals 29a and b of the Klixons 28 project beyond the bottom 13 out of the opening 22 and are bent outwards.
  • the Klixons 28 can also be a plugging a group connector or other plug done, which then protrudes below the opening 22 and thus causes a support of the Klixons.
  • a plugging a group connector or other plug done which then protrudes below the opening 22 and thus causes a support of the Klixons.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (11)

  1. Dispositif de chauffage électrique (23) avec un support (11) pour le dispositif de chauffage (23) pour disposer des éléments de chauffage (24) sur un côté supérieur (12) du support, dans lequel les éléments de chauffage (24) sont allongés et s'étendent en bandes (16) sur le côté supérieur du support, caractérisé en ce qu'il est prévu dans une région centrale de support (11), qui est libre d'éléments de chauffage (24), une ouverture (22) dans le support et un klixon (28) est introduit dans l'ouverture à partir du côté supérieur et déborde en partie latéralement de l'ouverture (22) avec des onglets latéraux (30a, 30b) à la manière d'ailes pour reposer sur le côté supérieur (12) du support, dans lequel il présente des raccords électriques (29), qui sont en saillie au-dessus du côté inférieur (13) du support (11).
  2. Dispositif de chauffage selon la revendication 1, caractérisé en ce qu'au moins une zone de fixation (31) en saillie est formée intégralement sur le côté inférieur du support (11), et est saillante au-dessus d'un côté inférieur (13) essentiellement plat du support (11).
  3. Dispositif de chauffage selon la revendication 2, caractérisé en ce que la zone de fixation (31) présente au moins une ouverture préfabriquée (32) pour l'engagement d'une vis de fixation ou analogue, dans lequel l'ouverture est orientée en direction inverse au support (11).
  4. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu, par pliage des raccords (29) après l'introduction, une fixation mécanique du klixon (28) sur le support (11) par accrochage des raccords (29) sur le côté inférieur (13) latéralement au-delà de l'ouverture (22).
  5. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que le klixon (28) est fixé de façon élastique sur le support, de préférence au moyen d'ailes latérales sur un boîtier du klixon (28).
  6. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un élément de chauffage allongé (24), en particulier un en fil de résistance, s'étend dans les bandes (16), qui est immobilisé par repliage des parois latérales (20) des bandes (16) et/ou par enfoncement large des éléments de chauffage (24) dans les bandes (16).
  7. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de chauffage (24) est constitué d'un fil cintré en forme d'hélice.
  8. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un seul élément de chauffage (24) est disposé sur le support (11) et ses raccords (26) s'étendent à travers le support, de son côté supérieur (12) à son côté inférieur (13), dans lequel les raccords (26) sont en saillie sur le au-dessus du côté inférieur (13).
  9. Dispositif de chauffage selon l'une quelconque des revendications précédentes, caractérisé en ce que des câbles de raccordement électriques (27) sont fixés aux raccords (26) sur le côté inférieur (13) du support (11) pour le raccordement électrique et une fixation mécanique des raccords contre un retrait est ainsi réalisée, en particulier aussi une fixation de l'élément de chauffage (24), dans lequel une liaison des câbles de raccordement électriques (27) avec les raccords (26) est de préférence très proche du support (11).
  10. Procédé de fabrication d'un dispositif de chauffage (23) selon l'une quelconque des revendications 1 à 9, dans lequel on introduit un klixon (28) à partir du côté supérieur (12) du support dans l'ouverture (22) dans la région centrale du support (11) et celui-ci est en partie saillant au-dessus de l'ouverture (22) pour s'appliquer sur le côté supérieur (12) du support, dans lequel des raccords électriques (29) du klixon sont en saillie au-dessus du côté inférieur (13) du support (11), caractérisé en ce que, après la mise en place de l'au moins un élément de chauffage (24) sur le support (11), on exerce dans les bandes (16) sur le côté supérieur (12) du support, sur l'élément de chauffage (24), une pression par le haut d'une manière telle qu'il s'imprime au moins localement dans des parois latérales des bandes (16) pour la fixation de l'élément de chauffage contre un soulèvement ou un enlèvement hors des bandes (16).
  11. Procédé selon la revendication 10, caractérisé en ce que l'on plie au moins un raccord électrique (29) du klixon (28) saillant au-dessus du côté inférieur (13) du support (11) ou on y applique un connecteur électrique ou un câble de raccordement électrique pour la fixation du klixon (28) au support (11) par dépassement au-dessus du côté inférieur (13) du support (11).
EP08017879.1A 2007-10-30 2008-10-13 Support pour un dispositif de chauffage électrique, dispositif de chauffage électrique et procédé de fabrication d'un dispositif de chauffage électrique Not-in-force EP2056650B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007053349A DE102007053349A1 (de) 2007-10-30 2007-10-30 Träger für eine elektrische Heizeinrichtung, elektrische Heizeinrichtung und Verfahren zur Herstellung einer elektrischen Heizeinrichtung

Publications (3)

Publication Number Publication Date
EP2056650A2 EP2056650A2 (fr) 2009-05-06
EP2056650A3 EP2056650A3 (fr) 2009-11-04
EP2056650B1 true EP2056650B1 (fr) 2013-09-18

Family

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Application Number Title Priority Date Filing Date
EP08017879.1A Not-in-force EP2056650B1 (fr) 2007-10-30 2008-10-13 Support pour un dispositif de chauffage électrique, dispositif de chauffage électrique et procédé de fabrication d'un dispositif de chauffage électrique

Country Status (3)

Country Link
US (1) US8466391B2 (fr)
EP (1) EP2056650B1 (fr)
DE (1) DE102007053349A1 (fr)

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE520136C (de) 1931-03-07 Elektrobeheizung G M B H Elektrische Gluehkochplatte mit keramischem Trag- und Schutzkoerper fuer die Heizwiderstaende
GB261525A (en) 1925-10-15 1926-11-25 Automatic Telephone Mfg Co Ltd Improvements in or relating to electric heating apparatus
US3612826A (en) * 1970-07-17 1971-10-12 Gen Motors Corp Surface temperature indicator light for ceramic top infrared radiant range
US3749883A (en) 1972-07-17 1973-07-31 Emerson Electric Co Electric heater assembly
DE2500586A1 (de) * 1975-01-09 1976-07-15 Ego Elektro Blanc & Fischer Elektrokochgeraet
DE2950302A1 (de) * 1979-12-14 1981-06-19 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Elektrischer strahlheizkoerper sowie verfahren und vorrichtung zu seiner herstellung
DE3007806C2 (de) 1980-02-29 1982-09-02 Elpag AG Chur, 7001 Chur Elektrische Heizeinrichtung für Herde und Kochplatten
DE3131462A1 (de) * 1981-08-08 1983-02-24 Karl 7519 Oberderdingen Fischer Temperaturbegrenzte kochplatte
US4634841A (en) 1985-06-18 1987-01-06 Laughrey James C Cover for cooking stove heating element
DE3717728A1 (de) * 1987-05-26 1988-12-08 Kueppersbusch Kochplatte mit einer glaskeramikplatte
GB2275162B (en) 1993-02-11 1996-04-10 Ceramaspeed Ltd Radiant electric heater method
US6555793B2 (en) * 1998-11-11 2003-04-29 Emerson Electric Co. Advanced radiant electric heater
JP2003115427A (ja) 2002-06-14 2003-04-18 Ibiden Co Ltd 半導体製造・検査装置用セラミック基板
DE10258726B4 (de) * 2002-12-05 2007-06-21 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für eine flächige Beheizung
DE10258729B4 (de) 2002-12-06 2008-04-03 Carl Zeiss Selbstfokussierende Brille und Verfahren zum Selbstfokussieren einer Brille
GB0316971D0 (en) 2003-07-19 2003-08-27 Ceramaspeed Ltd Electrical terminal assembly, particularly for an electric heater
DE102005005527A1 (de) * 2005-01-31 2006-08-03 E.G.O. Elektro-Gerätebau GmbH Induktionsheizeinrichtung und Kochfeldmulde mit einer solchen Induktionsheizeinrichtung
DE102005025896B4 (de) * 2005-05-25 2010-11-25 E.G.O. Elektro-Gerätebau GmbH Kochfeldplatte mit optischer Temperaturanzeige und mit Vorrichtung zur optischen Temperaturerfassung sowie entsprechendes Kochfeld

Also Published As

Publication number Publication date
US20090188908A1 (en) 2009-07-30
EP2056650A3 (fr) 2009-11-04
EP2056650A2 (fr) 2009-05-06
DE102007053349A1 (de) 2009-05-07
US8466391B2 (en) 2013-06-18

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