EP0927428B1 - Strahlungsheizkörper für eine kochstelle - Google Patents

Strahlungsheizkörper für eine kochstelle Download PDF

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Publication number
EP0927428B1
EP0927428B1 EP97944881A EP97944881A EP0927428B1 EP 0927428 B1 EP0927428 B1 EP 0927428B1 EP 97944881 A EP97944881 A EP 97944881A EP 97944881 A EP97944881 A EP 97944881A EP 0927428 B1 EP0927428 B1 EP 0927428B1
Authority
EP
European Patent Office
Prior art keywords
bimetal
pot
radiant heating
heating unit
unit according
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.)
Expired - Lifetime
Application number
EP97944881A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0927428A1 (de
Inventor
Winfried Leiprecht
Rudolf Gottschling
Silvia Emtmann
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.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
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 Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Publication of EP0927428A1 publication Critical patent/EP0927428A1/de
Application granted granted Critical
Publication of EP0927428B1 publication Critical patent/EP0927428B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0213—Switches using bimetallic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/04—Bases; Housings; Mountings
    • H01H37/043—Mountings on controlled apparatus
    • 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
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/34—Means for transmitting heat thereto, e.g. capsule remote from contact member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • 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
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to a radiant heater for a hotplate according to the Preamble of claim 1.
  • Such a radiant heater with a temperature control device is by DE 32 47 028 A1 discloses. Between the radiant heater and one Glass ceramic cooktop is a rod-shaped temperature sensor arranged as Heat transfer element formed and with at least one temperature switch is thermally coupled.
  • the temperature switch is a commercially available one Bimetal switch with a bimetal spring washer. It is a indirect coupling of the bimetal element to the room above the heating conductor.
  • DE 89 14 470 U1 is a control device for an electric heating unit known in which an elongated, thermally conductive sensor by a Opening in the ring edge of the insulating base carrying the heating conductor is led out.
  • a bimetallic strip connects to the sensor at the outer end, the is in active contact with a switch. This example also only reveals an indirect coupling of the bimetal strip via the elongated sensor with the air space above the heating conductor.
  • the built-in safety temperature limiter serves to protect the Glass ceramic plate against overheating.
  • Such an expansion rod regulator is a complex one and therefore expensive component.
  • the arrangement of the expansion rod a correspondingly high overall height of the radiant heater in the air space.
  • the object of the invention is a radiant heater to propose the type mentioned at the beginning, in which small switching hysteresis of An expansion rod does not limit the safety temperature is required.
  • the above object is characterized by the features of characterizing part of claim 1 solved.
  • the bimetal switch component is an inexpensive one Component and leads to a sufficient in a simple manner small switching hysteresis, since it quickly changes to that of Heating element outgoing heat radiation reacts. So that is also a large overshoot of the temperature over one Limit value avoided.
  • Another advantage of the arrangement of the bimetal switch component is that there are several simple ways that Set or close the response temperature of the bimetal adjust.
  • a structural advantage is that the bimetal switch component to the height of the radiant heater has practically no influence because it is not in the Air space between the insulating floor and glass ceramic plate extends.
  • the temperature at which the Bimetal element appeals is greater than 300 ° C. With that Influences of the ambient temperature of the Radiant heater largely suppressed.
  • Bimetal switch component the function of an adjustable Integrated energy regulator. This is what the Bimetallic element or one of these actuable Switching contact an adjusting element in connection with which the response temperature of the bimetal element is adjustable is.
  • a radiant heater has a pot (1) in which an insulating base (2) made of thermal and electrical insulating material is introduced. There is a in the pot (1) thermally and electrically insulating ring edge provided that in the embodiments of a separate ring part (3) is formed. At the Embodiment according to Figure 1, 2 could Insulating base (2) and the ring rim also in one piece be trained. Between the insulating floor (2) and one can be placed on the radiant heater Glass ceramic plate (4) there is an air space (5) in which a heating element (6) which is visible during operation is. In the embodiments is as a heating element a spirally laid heating coil is shown. It can but also other radiant heating elements, for example from flat wire or heating conductor foil or Halogen spotlights can be provided. Outside on the pot (1) there is a connection base (7) for the electrical Connection of the heating element (6).
  • a bimetal switch component (8) is used as the safety temperature limiter provided its ceramic housing (9) completed by a metallic base plate (10) is.
  • a bimetallic element is located inside the housing (9) (11) on the base plate (10) in a heat-conducting manner.
  • the Bimetal element (11) can be designed as a spring washer his.
  • the bimetallic element (11) is above a Ceramic pin (12) which is mounted in a guide (13), with an electrical switch contact (14) in Operatively connected. Power connections (15) of the switch contact (14) are led outwards from the housing (9) (cf. Figure 3).
  • the housing (9) is on both sides at a distance from the Base plate (10) grooves (16) with which the housing (9) can be inserted into a cutout (17) of the pot (1), the edges of the cutout (17) in the grooves (16) intervention.
  • the switch component (8) is open easily set on the pot (1), being about ceramic housing (9) a thermal decoupling of the Bimetal elements (11) of the usually made of sheet metal and thus heat-conducting pot (1) is reached. It can the bimetal switch component (8) in another way, for example by means of a bracket on the pot (1) be attached.
  • the power connections (15) are outside the pot (1). Brackets (19) hold the base plate (10) on the Housing (9). They do not provide any significant thermal bridges represents.
  • the bimetallic element (11) is provided.
  • the Base plate (10) a heat conducting piece (22) is formed.
  • This has a leg (23) which is characterized by a between the ring part (3) and the insulating base (2) existing opening (24) extends.
  • On the thigh (23) is followed by a leg (25) in the Air space (5) next to the heating element (6).
  • the thigh (25) is about where in the embodiment according to Figures 1 and 2, the opening (20).
  • the heat conducting piece (22) can be made in one piece with the Base plate (10) may be formed or as a separate part be attached to this.
  • the bimetal temperature at which the bimetal element (11) switches is preferably in the range between 300 ° C and 500 ° C. Choosing such a high temperature is convenient because then the ambient temperature of the pot (1) Switching behavior hardly influenced.
  • the coupling measures described can also be Switching hysteresis of the switching contact (14) on one hold the desired small value, for example 30 K.
  • the bimetal switch component (8) can also be a second one Have switching contact (26) of the bimetallic element (11) or another bimetallic element (11), optionally a further bimetallic switch component (8) is controllable.
  • This second Switch contact (26) can be a known one optical residual heat indicator, for example a Glow lamp (27), control (see Fig. 8). It can on that Pot (1) in the manner described also two bimetal switch components be arranged, one of which Safety temperature limitation is used and the other one a lower temperature, for example less than 100 ° C, for which the residual heat indicator is adjusted.
  • the bimetal switch component (8) a rotatable adjusting member (28), with a user-operated twist grip connected is.
  • the bimetal element (11) or the switching contact (14) acts, the temperature at which the Switching contact (14) or a third switching contact (29) (see Fig. 8) below the limit temperature of the Open and adjust the glass ceramic plate (4). It is with it through the bimetal switch component (8) next to the function the safety temperature limit also the function of the Energy control for the cooktop with small Switching hysteresis and low overshoot reached.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Control Of Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
  • Baking, Grill, Roasting (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP97944881A 1996-09-20 1997-09-16 Strahlungsheizkörper für eine kochstelle Expired - Lifetime EP0927428B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19638517 1996-09-20
DE19638517A DE19638517A1 (de) 1996-09-20 1996-09-20 Strahlungsheizkörper für eine Kochstelle
PCT/EP1997/005056 WO1998012724A1 (de) 1996-09-20 1997-09-16 Strahlungsheizkörper für eine kochstelle

Publications (2)

Publication Number Publication Date
EP0927428A1 EP0927428A1 (de) 1999-07-07
EP0927428B1 true EP0927428B1 (de) 2002-04-03

Family

ID=7806304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97944881A Expired - Lifetime EP0927428B1 (de) 1996-09-20 1997-09-16 Strahlungsheizkörper für eine kochstelle

Country Status (11)

Country Link
US (1) US6121587A (ja)
EP (1) EP0927428B1 (ja)
JP (1) JP2001507500A (ja)
AT (1) ATE215731T1 (ja)
AU (1) AU745337B2 (ja)
CA (1) CA2265783C (ja)
CZ (1) CZ91899A3 (ja)
DE (2) DE19638517A1 (ja)
ES (1) ES2175472T3 (ja)
PL (1) PL332315A1 (ja)
WO (1) WO1998012724A1 (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814985A1 (de) * 1998-04-03 1999-10-07 Ego Elektro Geraetebau Gmbh Heißanzeige-Schalteinrichtung
DE19825309A1 (de) * 1998-06-05 1999-12-09 Bsh Bosch Siemens Hausgeraete Strahlungsheizungsanordnung mit Stromschienen
DE19852166B4 (de) * 1998-11-12 2006-05-11 Eika, S. Coop. Strahlungsheizeinrichtung
US6360291B1 (en) * 1999-02-01 2002-03-19 Compaq Computer Corporation System and method for hiding peripheral devices in a computer system
FR2792158B1 (fr) * 1999-04-09 2001-05-18 Jaeger Regulation Foyer de cuisson par induction modulable a rayonnement reduit et procede de realisation
GB2361160B (en) * 2000-04-03 2004-11-03 Ceramaspeed Ltd Radiant electric heater
GB0301167D0 (en) 2003-01-18 2003-02-19 Ceramaspeed Ltd Temperature-limiting device
ES1057791Y (es) * 2004-06-14 2005-01-01 Eika S Coop Calefactor radiante en una encimera de coccion, con un interruptor termico.
ES1058165Y (es) * 2004-08-05 2005-02-16 Eika S Coop Calefactor radiante para coccion, con una base aislante de moldeo.
DE102004059159A1 (de) * 2004-12-08 2006-06-14 BSH Bosch und Siemens Hausgeräte GmbH Kochfeld
US7554060B2 (en) * 2006-09-29 2009-06-30 England Raymond O Displaying cooking-related information
CN100521831C (zh) * 2007-04-11 2009-07-29 佛山市顺德区简氏家用电器厂 陶瓷炊具的加热器的限温装置
DE102021210399A1 (de) * 2021-09-20 2023-03-23 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für ein Kochfeld und Kochfeld mit einer solchen Heizeinrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622155A (en) * 1969-03-20 1971-11-23 Coleco Ind Inc Basketball backboard set
DE2460860C3 (de) * 1974-12-21 1980-03-13 Inter Control Hermann Koehler Elektrik Gmbh & Co Kg, 8500 Nuernberg Temperaturabhängiges Schaltgerät mit Bimetallscheibe
DE2923884C2 (de) * 1979-06-13 1982-12-02 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Regeleinrichtung zur Ankopplung an Heizelemente für Glaskeramik-Kochflächen
NZ197851A (en) * 1980-08-13 1984-09-28 Micropore International Ltd Cooker element:temperature sensor receives heated air
DE3247028A1 (de) * 1982-12-18 1984-06-20 Ego Elektro Blanc & Fischer Temperaturregeleinrichtung fuer ein waermegeraet
DE3536981A1 (de) * 1985-10-17 1987-04-23 Ako Werke Gmbh & Co Ueberhitzungsschutzschalter einer strahlungsbeheizung
DE3622415A1 (de) * 1986-07-03 1988-01-07 Ego Elektro Blanc & Fischer Strahlheizkoerper
DE8914470U1 (de) * 1988-12-09 1990-06-21 Emaco Ltd., Bedfordshire, Bedfordshire Steuereinrichtung für eine elektrische Heizeinheit

Also Published As

Publication number Publication date
CZ91899A3 (cs) 1999-07-14
EP0927428A1 (de) 1999-07-07
CA2265783C (en) 2004-11-09
AU4623197A (en) 1998-04-14
JP2001507500A (ja) 2001-06-05
ES2175472T3 (es) 2002-11-16
AU745337B2 (en) 2002-03-21
PL332315A1 (en) 1999-08-30
DE59706894D1 (de) 2002-05-08
CA2265783A1 (en) 1998-03-26
DE19638517A1 (de) 1998-03-26
ATE215731T1 (de) 2002-04-15
US6121587A (en) 2000-09-19
WO1998012724A1 (de) 1998-03-26

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