EP1774554A1 - Dispositif pour commander plusieurs unites de chauffage d'un appareil de cuisson, et appareil de cuisson equipe d'un tel dispositif - Google Patents

Dispositif pour commander plusieurs unites de chauffage d'un appareil de cuisson, et appareil de cuisson equipe d'un tel dispositif

Info

Publication number
EP1774554A1
EP1774554A1 EP05763998A EP05763998A EP1774554A1 EP 1774554 A1 EP1774554 A1 EP 1774554A1 EP 05763998 A EP05763998 A EP 05763998A EP 05763998 A EP05763998 A EP 05763998A EP 1774554 A1 EP1774554 A1 EP 1774554A1
Authority
EP
European Patent Office
Prior art keywords
heating device
heating
power
path
cooking appliance
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.)
Granted
Application number
EP05763998A
Other languages
German (de)
English (en)
Other versions
EP1774554B1 (fr
Inventor
Eugen Wilde
Erich John
Hans Mohr
Ralf Stoll
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
Priority to PL05763998T priority Critical patent/PL1774554T3/pl
Publication of EP1774554A1 publication Critical patent/EP1774554A1/fr
Application granted granted Critical
Publication of EP1774554B1 publication Critical patent/EP1774554B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature
    • H01H37/26—Means for adjustment of "on" or "off" operating temperature by adjustment of abutment for "off" position of the movable contact

Definitions

  • the invention relates to a device for switching or switching on and off of several heating devices of a cooking appliance and a cooking appliance with such a device.
  • Radiant heater with a certain diameter which crizos ⁇ , greater than 230 mm, have some of the problem that their energy by so-called energy control devices on the one hand and an over-temperature protection for a glass ceramic plate on the radiant heater by so-called Temperaturbegrenzer ander ⁇ by a maximum of achievable benefits and a so-called Fli ⁇ cker standard are limited.
  • the Flicker standard specifies how often in a certain period of time a certain power can be switched on or off in a cooking appliance and should prevent greater network disturbances in the energy of the energy supply companies.
  • the switching capacity of both the energy control devices and the temperature limiter which operate with so-called snap-action switches, as described, for example, in EP 898 291 A and DE 33 33 645 A, is generally limited. For the USA, these are for example 12 or 13 amperes. This is due to the fact that 100,000 switching cycles must be achievable.
  • the invention has for its object to provide an aforementioned Vor ⁇ direction and a cooking appliance, with which the disadvantages of the prior art can be avoided and in particular the activation of a further heating device to increase the Schuleis ⁇ direction of heating a hotplate can be achieved at the lowest possible expense.
  • the Vorrich ⁇ device has a clocking energy control device, as is known for example from the aforementioned EP 898 291 A, which has a Ab ⁇ state change for a trip path of a first switching device, which is included in the energy control unit.
  • the change in distance can be influenced by a set adjustment path on the energy control device, for example by a rotary movement by means of a rotary knob of the energy control device.
  • the triggering path in turn defines the on or off times or their relationship to one another, with which the heating device is either deactivated or activated at full power. Due to the clock ratio or the length of the respective on and off times, the so-called averaged energy production can take place or the so-called mean re achievement.
  • a second trigger point is provided, on which a second switching device is activated or switched on, with which a second heating device can be activated.
  • This second heating device is advantageously an additional heater for the first heating device.
  • both heaters form a cooking point, it is possible in this way that the power for the second heater does not have to be switched via the same first switching device which also switches the first heating device. This means that larger heating capacities are possible at a cooking place than before.
  • the change in distance is designed such that at the second triggering point it resets the triggering path for the first switching device to an initial value for the definition of the on and off times and their relationship to one another, wherein from then on the triggering path increases further is changed again, in particular in the same direction as before.
  • the change in distance thereby causes the triggering path to increase from an initial value to the second triggering point with an overall increase in the adjustment travel and thus correspondingly influences the first shifting device.
  • the second heating device is activated via the second switching device in addition to the first heating device.
  • the triggering for the first heater linen ⁇ is reset and thus their average power output over a certain period of time, so set, for example, in a cooking appliance back to a low level.
  • this second trigger point it is advantageous for this second trigger point to be set in such a way that the average power generated by the first heating device until shortly before the second triggering point corresponds to that which then generates the second heating device.
  • the average power generated by the first heater from the second trip point is again greatly reduced and starts with increasing to increase again the adjustment path and increasing triggering path.
  • a certain constant value of the average power is generated by the second heating device.
  • the variable component which can be influenced by the energy control device at the first heating device in its height, then returns in an increasing manner from the heating device.
  • the device may include or be connected to a temperature limiter, which is arranged in the effective range of the first heating device, in some circumstances also in the effective range of the second heating device.
  • This temperature limiter can be designed, for example, as described in the aforementioned DE 33 33 645 A and, when exceeding a certain temperature, in particular for protecting a glass ceramic plate arranged above the heating device, switch off the first heating device.
  • the temperature limiter can have a switch in the connection path for the first heating device.
  • the clocking energy control device can be designed as an electromechanical device such that the adjustment path is influenced by a linear movement or preferably a rotary movement. When turning it should be slightly less than 360 °. About the change in distance Drehbewe ⁇ tion is converted into a substantially rectilinear tripping. Da ⁇ to the energy control unit or the change in distance spielmik have a rotary shaft with a non-circular running disk, at the outer edge of a part of a switching device and the first switching device is applied. Their switching behavior with respect to the on and off times or their relationship to one another depends on the variable triggering path, that is to say the variable radius of the disk.
  • a similar triggering can be provided, in particular, in turn, by a non-circular disk or a type of cam.
  • this disk or the cam activates the second switching device in order to switch on the second heating device.
  • no continuously changed radius is required since no increasing triggering path is required.
  • the second triggering point at which the second heating device replaces the generation of the heating power from the first heating device, so to speak can preferably be set so that the average power of the first heating device at this point is less than half the maximum total power, for example approximately one third.
  • the transition between cooking, such as liquids, and Bra ⁇ th, for example, meat in a pan instead.
  • the particularly high heating capacities at a cooking point which can advantageously be generated by the invention are advantageous in addition to the fastest possible boiling of cooking pots with water for such high-performance frying operations.
  • two heating devices can be provided for a cooking point, the cooking appliance being a cooking surface with a glass ceramic plate and radiant heaters underneath and having a plurality of such cooking surfaces.
  • the second heating device has a maximum continuous power corresponding to a power density of about 2.5 W per cm 2 . With this value, the second heating device can generally be operated without temperature monitoring against overheating of the glass ceramic plate. Thus, no temperature monitoring against overheating of the glass ceramic is required for the second heating device or its operation.
  • the power density can also be chosen over 2.5 W / cm 2 , if the Specifications or tests of the manufacturer of the glass ceramic give this or permit.
  • the two heaters are advantageously electrically separated from each other ge.
  • they are contained in a so-called single-circuit radiator, in contrast to dual-circuit radiators, which make possible a size-wise extension of a hotplate for larger cooking vessels.
  • the first heating device and the second heating device consist of elongated heating resistors, in particular in flat band form, which are laid in spiral or meandering form on a surface.
  • the two heating devices can each extend in parallel as heating strips and cover a total of the same total area.
  • the heating device does not achieve an enlarged heating surface but, on a constant heating surface, an increased heating power.
  • FIG. 2 shows an arrangement of two cam disks on a rotary shaft of a power control device with two switching devices
  • 3 is a plan view of a possible arrangement of two Schuell ⁇ directions at a hotplate of a hob
  • FIG. 4 is a side view of the arrangement of FIG. 3 in a Koch ⁇ field
  • FIG. 5 shows a diagram of the distribution of the average power as a function of the angular position of a setting on the energy control device according to FIG. 2.
  • FIG. 1 shows a functional diagram of a device 11 according to the invention, with which a first heating device 13 and a second heating device 15 can be activated. These form a common cooking point 19, as can be seen from FIG. It should be noted that the two heating devices 13 and 15 do not form a basic and an additional heating zone, but both heat approximately the same area. The second heating device 15 serves only to provide additional heating power on the surface of the hotplate 19.
  • Both heating devices 13 and 15 may be so-called radiation heaters, as described, for example, in EP 590 315 A, to which reference is expressly made. They are operated with mains voltage, in Germany for example 230V and in the USA 120V - 240V. Their operation is usually carried out in clocked manner in such a way that a heating device either rests against the supply voltage and operates at full power or is disconnected from the supply voltage and is thus deactivated. The amount of energy production takes place over a certain period of time _.
  • the so-called average power generation can take place or results in the so-called mean power.
  • the first heating device 13 is to be operated clockingly in order to determine the level of the mean continuous power, as does the second heating device 15.
  • a power controller 21 is provided for the control of the heating devices in the aforementioned manner with on and off times in a clocking manner.
  • a similar energy control device 21 is described, for example, in the aforementioned EP 898 291 A or DE 102 004 020 977 A, to which reference is expressly made.
  • a certain cooking level can be set, which determines the height of the average power of the heaters or hotplate 19 over a long period of time.
  • the knob 22 is seated on a rotary shaft 23. As a function of this, the energy control device 21 switches on and off the first heating device 13 with the illustrated first switching device 24.
  • a first shift drum 27 is mounted on the rotary shaft 23, which has a certain course. At the first shift drum 27 is located on a slider 26 which carries the first switching device 24 with the contacts 25.
  • the switching device 24 is designed as a snap-action switch. With regard to the more precise function, reference is made to the aforementioned EP 898 291 A and the content of which is incorporated by express reference into the content of this application. The exact shape of the first shift drum 27 will also be explained in detail below.
  • cam disk 34 is seated on the rotary shaft 23.
  • a grinder 32 of a second switching device 30 is in contact with this with contacts 31, which switch the second heating device 15 on and off.
  • the exact course of the cam plate 34 will also be explained in more detail below.
  • Fig. 3 is a plan view of the hotplate 19 is schematically darge. From this it can be seen how the two heating devices 13 and 15 as elongated heating conductor strips or resistors parallel to one another cover the surface of the cooking point 19 approximately. Furthermore, a temperature limiter 40 is provided, as described, for example, in the aforementioned DE 33 33 645 A. It has a long feeler 41 and contains a temperature-limiting switch 42. With regard to the precise design and function, reference is made to the aforementioned DE 33 33 645 A and the contents of this application are made by express reference.
  • the sensor 41 covers a certain area of the cooking area 19 and preferably runs over a type of free zone between the tracks of the first heating device 13 and the second heating device 15.
  • the temperature limiting switch 42 can only interrupt the supply of the first heating device 13.
  • it detects the temperature of the entire cooking area 19, it only interrupts the energy supply to the first heating device 13 in the event of an excessively high temperature or a temperature which is regarded as detrimental to a covering glass ceramic plate 18 according to FIG. 4.
  • the second heating device 15 is designed for a continuous power which does not exceed a value of approximately 2.5 W per cm 2 of covered area. For this value, it is possible and permissible to operate the second heating device 15 permanently, without an excess temperature at the glass-ceramic _ _
  • the power of the second heating device 15 may result in addition to the power of the first heater 13 a total desired total power.
  • first region 27a which extends from 0 ° to about 140 °, so the radius of the shift drum 27 decreases steadily from the largest value.
  • a second region 27b adjoins the region 27a with the increase, which acts on the off state.
  • the radius increases again, to such an extent that it corresponds to that radius in the region 27a at which the smallest cooking level is reached, ie the smallest average continuous power which the first heating device 13 generates via the energy control device 21. This is just past the outermost point of the shift drum 27 in the area 27a. From this increase, the radius decreases again in the area 27b over substantially the remaining angular range to just before 360 °. There again, the area 27a begins with the strong increase.
  • the cam disk 34 has the beginning of the region 34b. This extends _ -
  • the average powers P1 for the first heater 13, P2 for the second heater 15 and Pges for the entire cooking point 19 in the course of the rotation angle are shown.
  • P2 is shown dotted, Pges dot-dashed.
  • the power P1 increases from a be ⁇ certain starting value, for example, just over 100 watts, up to about 1,200 watts at 140 °.
  • the slider 26 together with the first switching device 24 is pushed further upwards by the beginning of the region 27b, specifically as far as in the region 27a after the elevation and at the lowest possible average power switched on. So these are just over 100 watts again. From here, the power P1 increases again due to the decreasing radius of the region 27b, as shown.
  • the second switching device 30 switches on through the second region 34b on the cam disk 34, and the second heating device 15 is activated.
  • the power P2 is constant even with increasing angle.
  • the total power Pges is given by adding P1 and P2.
  • the value for P2 can be selected at about 1,100 watts.
  • P1 can amount to a maximum of 2,100 watts, so that a total heating power of 3,200 watts is generated at the cooking point 19, which is significantly above current maximum heating powers.
  • the temperature limiter 40 disconnects only the first heating device 13 via the switch 42.
  • the size of the cooking area 19 may be about 230 mm or correspond to such a usual cooking place. At a voltage of 240V, this normally only has a power of 2,500 watts, so that an increase of the heating power by more than 25% is possible.
  • the coverage of the second heater 15 by the sensor 41 of the temperature limiter 40 affects or does not interfere with the function here.
  • the second heating device 15 contributes to increasing the temperature.
  • due to the choice of its maximum heat output of about 2.5 W per cm 2 it can be used even when an over-tempera- - -
  • An advantageous embodiment of the invention can thus a device for power supply for a hotplate two heaters aufwei ⁇ sen, which are laid parallel to each other.
  • About an electromechanical energy control device depending on an angular position, either only a first heater operated regulated or a second heater firmly connected.
  • the power of the second heating device is chosen so small that, in order to protect a glass ceramic plate against overheating, no temperature limiter must be provided in the drive path of the second heating device.
  • the second heating device is switched on, the regulated power of the first heating device is reduced to an initial value by approximately the amount of power of the second heating device. The total power results from the added power of the two heaters.

Landscapes

  • Electric Stoves And Ranges (AREA)
  • Control Of Resistance Heating (AREA)
  • Baking, Grill, Roasting (AREA)
  • Resistance Heating (AREA)
  • Cookers (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

L'invention concerne un dispositif (11) servant à alimenter en puissance un point de cuisson (19) et présentant deux unités de chauffage (13, 15) montées en parallèle. En fonction d'une position angulaire, un appareil de commande d'énergie (21) électromécanique fait fonctionner de manière régulée une seule unité de chauffage (13) ou met en circuit une deuxième unité de chauffage (15). La puissance de la deuxième unité de chauffage est sélectionnée de manière à être si faible qu'il n'est pas nécessaire de prévoir un limiteur de température dans le trajet de commande de la deuxième unité de chauffage (15) pour protéger une plaque vitrocéramique (18) contre une surchauffe. Lors de la mise en circuit de la deuxième unité de chauffage, la puissance régulée (P1) de la première unité de chauffage (13) est abaissée à une valeur initiale, cette baisse correspondant à la valeur de puissance (P2) de la deuxième unité de chauffage. La puissance totale (Pges) s'obtient par addition des puissances des deux unités de chauffage (13, 15).
EP05763998A 2004-08-03 2005-07-23 Dispositif pour commander plusieurs unites de chauffage d'un appareil de cuisson, et appareil de cuisson equipe d'un tel dispositif Active EP1774554B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05763998T PL1774554T3 (pl) 2004-08-03 2005-07-23 Urządzenie do przełączania szeregu urządzeń grzejnych sprzętu do gotowania oraz sprzęt do gotowania z takim urządzeniem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/910,434 US7145109B2 (en) 2004-08-03 2004-08-03 Appliance for switching on and off several heating devices of a cooker, as well as cooker having such an appliance
PCT/EP2005/008043 WO2006015710A1 (fr) 2004-08-03 2005-07-23 Dispositif pour commander plusieurs unites de chauffage d'un appareil de cuisson, et appareil de cuisson equipe d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP1774554A1 true EP1774554A1 (fr) 2007-04-18
EP1774554B1 EP1774554B1 (fr) 2010-12-29

Family

ID=35044922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05763998A Active EP1774554B1 (fr) 2004-08-03 2005-07-23 Dispositif pour commander plusieurs unites de chauffage d'un appareil de cuisson, et appareil de cuisson equipe d'un tel dispositif

Country Status (7)

Country Link
US (1) US7145109B2 (fr)
EP (1) EP1774554B1 (fr)
AT (1) ATE493745T1 (fr)
DE (1) DE502005010762D1 (fr)
ES (1) ES2358874T3 (fr)
PL (1) PL1774554T3 (fr)
WO (1) WO2006015710A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8258437B2 (en) * 2009-08-27 2012-09-04 Whirlpool Corporation Non-concentric surface heating element switch
US9752784B2 (en) * 2014-07-21 2017-09-05 Electrolux Home Products, Inc. Heating element control circuit
US20160227609A1 (en) * 2015-01-30 2016-08-04 Schott Corporation Multi function glass or glass-ceramic cooktop system and method of cooking thereon
CN109206339B (zh) * 2017-06-29 2021-04-27 湘潭大学 一种环己胺氧化制备环己酮肟的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH391057A (de) * 1962-03-21 1965-04-30 Elcalor Ag Bimetallschalter und Verwendung desselben
DE3410442A1 (de) * 1983-09-17 1985-09-26 Ego Elektro Blanc & Fischer Temperaturfuehler, insbesondere fuer einen temperaturbegrenzer fuer eine glaskeramik-kocheinheit
DE4229375C2 (de) * 1992-09-03 2000-05-04 Ego Elektro Blanc & Fischer Strahlungs-Heizkörper
US5847636A (en) * 1997-02-07 1998-12-08 Sehlhorst; Scott B. Heat motor operated load regulating switch assembly
DE19736308A1 (de) * 1997-08-21 1999-02-25 Ego Elektro Geraetebau Gmbh Leistungssteuergerät
US6951997B2 (en) * 2002-07-26 2005-10-04 Ark-Les Corporation Control of a cooktop heating element
DE102004020977B4 (de) 2004-04-22 2007-06-21 E.G.O. Elektro-Gerätebau GmbH Vorrichtung zur variablen Einstellung der Leistung einer Heizeinrichtung mit mindestens zwei Heizkreisen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006015710A1 *

Also Published As

Publication number Publication date
US7145109B2 (en) 2006-12-05
ATE493745T1 (de) 2011-01-15
EP1774554B1 (fr) 2010-12-29
PL1774554T3 (pl) 2011-05-31
ES2358874T3 (es) 2011-05-16
WO2006015710A1 (fr) 2006-02-16
DE502005010762D1 (de) 2011-02-10
US20060027563A1 (en) 2006-02-09

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