EP1791395A2 - Dispositf de détection de température pour ensemble de chauffage ainsi que sa méthode de commande d'ensemble chauffant - Google Patents

Dispositf de détection de température pour ensemble de chauffage ainsi que sa méthode de commande d'ensemble chauffant Download PDF

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Publication number
EP1791395A2
EP1791395A2 EP06024087A EP06024087A EP1791395A2 EP 1791395 A2 EP1791395 A2 EP 1791395A2 EP 06024087 A EP06024087 A EP 06024087A EP 06024087 A EP06024087 A EP 06024087A EP 1791395 A2 EP1791395 A2 EP 1791395A2
Authority
EP
European Patent Office
Prior art keywords
switching
power
switching point
heater
temperature detection
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.)
Withdrawn
Application number
EP06024087A
Other languages
German (de)
English (en)
Other versions
EP1791395A3 (fr
Inventor
Klaus Begero
Lutz Dr. Ose
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 EP1791395A2 publication Critical patent/EP1791395A2/fr
Publication of EP1791395A3 publication Critical patent/EP1791395A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F24C15/105—Constructive details concerning the regulation of the temperature
    • 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 temperature detection device for a heater in cooperation with a power controller or power controller and a method for controlling a heater in a first normal power range and a second lower power range.
  • the invention has for its object to provide an aforementioned device and an aforementioned method with which problems of the prior art can be avoided and in particular a better control or regulation of a heater is possible, especially in different modes.
  • the mechanical or thermomechanical temperature detection device has a sensor for detecting the temperature at the heating device or above it and thus corresponds to the basic mode of operation of the aforementioned EP 416 335 A and the DE 102004023787 A ,
  • a heater advantageously serves a known per se radiant heater a cooking area a hob.
  • the sensor has a different thermal expansion behavior on two advantageously elongated rod-like parts and thus generates a relative movement between them, which causes a switching movement.
  • at least two switching points are provided at different locations.
  • a switch or corresponding electrical contacts are provided, which are actuated upon reaching or passing through this switching point.
  • a first switching point is at a temperature of several 100 ° C, for example at 500 ° C to 700 ° C.
  • Another lower second switching point is in a first embodiment of the invention at a temperature of less than 100 ° C, for example 60 ° C to 90 ° C, as a warming function.
  • the lower second switching point is such that in the pan bottom, a temperature of 180 ° C to 220 ° C, for example at 200 ° C, adjusts and so a Bratfunktion is realized.
  • the low second temperature may vary according to the invention. Thus, the temperature can be kept for operation regardless of how high it should be.
  • the switches or the electrical contacts cause at both switching points that the power of the heater is changed or the heater is switched on or off or reduced in their performance.
  • the effect is that the power of the heating devices is reduced when the respective switching points are exceeded, possibly under certain circumstances. If the heating devices are heating devices operated in cycle mode, ie they are only switched on at full power or switched off, then these heating devices are just switched off.
  • the temperature detection means switching off the heater as protection against excess temperature, in particular overtemperature on a cooking surface or glass ceramic surface of the hob.
  • a corresponding switch in the temperature detection device switches the heating device down or directly from here. This safety function is for normal cooking operation.
  • the first switch or electrical contact for the first switching point can switch the heater directly or switch off
  • a second switch or electrical contact for the second switching point likewise directly switches or switches off the heating device, with its corresponding switching power being designed for this purpose.
  • a per se known and customary in the temperature detection device Signal switch is provided as a second switch, so designed for very low switching capacity. This second switch can then trigger or trigger another switch or circuit breaker for the corresponding circuit of the power of the heater.
  • a basically known and initially mentioned temperature detection device It is merely adapted to the individual application, in particular by appropriate adjustment of the second switching point to a desired temperature.
  • the further power switch can be provided, for example, close to the temperature detection device or to a power regulator.
  • This further switch is advantageously a power relay. If the switch for the second switching point is designed as a closing contact, that is closed when the corresponding temperature at the second switching point of the second switch, so advantageously the further or third switch is opened to turn off the heater.
  • the second switching point should be chosen so that a food is heated but not yet cooked, so it should be below 100 ° C.
  • the switching point is to be chosen or adjusted so that certain tolerances in the detection accuracy of the temperature detection device are taken into account so that a food to be kept warm only on the hob or on the heater under any circumstances comes to a boil.
  • the abovementioned temperatures for the second switching point may possibly be modified in such a way that the temperatures mentioned or
  • temperature ranges for the second switching point prevail at the top of a hob or at a food container placed there. The same applies to the frying function, but just with higher temperatures.
  • the device according to the invention is connected as an application with an electromechanical power regulator or cooperates with it, particularly advantageously, an arrangement according to the invention can also have such.
  • a power regulator is for example from the DE 19833983 A known.
  • it has at least two switching areas, which are rotational angle ranges in one embodiment as a rotary knob. In one of the switching ranges the power supply for the heater is set to reach the first switching point, so for cooking operation with high power and temperatures. In another or second switching range, the power supply to the heater should only cause the reaching of the second switching point, so be considerably lower to keep warm. In this case, the different switches or contacts are advantageously activated or activated in the temperature detection device.
  • the second switch for the second switching point can only interrupt the power supply to the heating device when the power regulator operates or is set in the corresponding second switching range.
  • an area with small angles of rotation or a smaller rotation of the power controller is configured starting from a zero position to reach the second switching point.
  • An area that goes beyond or adjoins with larger angles of rotation serves to reach the first switching point, ie the higher temperatures in the cooking mode. If a higher temperature is to be controlled for the frying function, obviously larger angles of rotation are also possible.
  • a small piece is rotated in one direction directly onto the normally highest cooking stage and then again in the other direction, for example with a rotation angle of at least 60 ° or even more than 90 °.
  • This serves to predetermine a power cycle for the heating device, which should advantageously correspond to at least stage 4 or 5 at 9 stages for the keep-warm function. It can thus be ensured that the power to the heater is not already too low due to the power clocking to achieve the desired holding temperature with the second switching point or this is achieved as quickly as possible.
  • the power clock should be level 7 to 9. This can be represented by inscription of the rotary control.
  • an RC element may be provided with a capacitor. This is charged when switching on the heater and discharges after switching off the heater via a glow lamp or the like. as visually recognizable residual heat indicator.
  • the capacitance of the capacitor is advantageously dimensioned such that a display duration of the residual heat indicator is at least a few minutes. In this case, the residual heat indicator is therefore no longer on detecting the actual existing temperature on the hob after turning off the heater, but according to experience.
  • the actual power to the heater which is applied during operation with the second switching point, ie for the warming function, can be selected between 5% and 20% of the maximum power. In particular, it can be around 10%.
  • the roasting function it can be between 70% and 90%.
  • the temperature detection device is advantageously designed as a mechanical or thermomechanical functional unit and the power controller or power controller are advantageous electromechanical functional units.
  • the invention relates to an aforementioned arrangement of temperature sensing device and power controller or power controller and heating device, ie as a ready-to-use device, in particular as a hob.
  • a hob with a plurality of radiant heaters for the hobs can be formed be that some hotplates are designed for the warming function and some for the frying function.
  • a device 11 is shown with various structural units, which serves to control or power control of a radiant heater 13, as it may be installed under a well-known glass ceramic hob.
  • the device 11 comprises a power regulator 15 with a first power control switch 16 and a second power control switch 17 and a changeover switch 19 with a changeover switch 20.
  • the rotary knob 22 can be rotated in both directions.
  • both the clock ratio or the power supply to the power regulator 15 and the switch position of the changeover contact 20 in the changeover switch 19 between the position 1 and the position 2 can be influenced.
  • a rod controller 25 Connected to the switch 19 is a rod controller 25 as a temperature detecting device. He has according to a conventional rod controller, as for example from the above EP 416 335 A or DE 102004023787 A is known, a first regulator contact 27 and a second regulator contact 28. These are actuated by means of a longitudinal bar 30 in mechanical connection with them, for example made of ceramic. This longitudinal bar 30 extends in a rod control tube 31 made of metal and the two thus form the sensor 32nd
  • the sensor 32 projects beyond the radiant heater 13, which has a spiral-like heating resistor 34 as the actual heating device. Its power supply is via one of the two controller contacts 27 or 28 and the second power control switch 17 of the power controller 15, which only serves for two-pole shutdown.
  • the basic function of the power controller 15, the switch 19, the rod controller 25 and the structure of the radiant heater 13 correspond in broad terms to what is known from the prior art in terms of their general function.
  • the peculiarity lies above all in the changeover switch 19 or the control or interconnection of the regulator contacts of the bar controller 25, in particular of the second regulator contact 28.
  • a rotary knob 22 is shown enlarged in plan view. He carries a label of the cooking stages 1 to 9, starting at the rotational position indicator 23 counterclockwise. Bottom left is provided as a label 36, the rotation angle range for the additional function of keeping warm directly on the rotary knob. So if the rotary knob 22 is rotated to the right, that this label 36 and the cooking stages 3 to 5 are at the top, the above additional function of keeping warm is set.
  • Fig. 7 shows a deviation from Fig. 6, that the label 36 'for the additional function roast can also be attached to the panel behind the rotary knob.
  • the rotary knob 22 is rotated so far to the right that the rotational position indicator 23 points to the inscription 36 '. This corresponds approximately to the cooking stage 8 or 9, and here then the above-described additional function of the roast is set.
  • a hob 12 is shown in plan view.
  • This hob 12 has four radiant heaters 13a to 13d, which form corresponding hotplates on a glass ceramic cooking surface 14.
  • the radiant heater 13d front right forms one of the prior art known two-circuit cooking area.
  • dashed lines of the rod controller 25a is located.
  • rotary knobs 22a to 22d are arranged on the front side of the hob 12, their assignment to the hotplates being such that the rotary knob 22c is assigned to the far left of the front left-hand hotplate.
  • the assignment of the rotary knob 22 to the right of it takes place from the hob 13c from clockwise.
  • the assignment of the additional functions of the cooking areas 13 is hereby as follows.
  • the two rear burners 13a and 13b have as an additional function the keep-warm function with regulation to a temperature between 70 ° C and 90 ° C.
  • the two front cooking zones 13c and 13d have as an additional function the frying function with a second switching point for a pan bottom temperature of around 200 ° C.
  • a so-called three-circuit power controller can be used, as is known to the person skilled in the art.
  • the representation of the two regulator contacts 27 and 28 of the rod controller 25 in Fig. 1 is intended to mean that the Stabreglerrohr 31 when heated of the sensor 32 expands, the ceramic longitudinal bar 30, however, not.
  • the longitudinal bar 30 is pulled away from the rod controller 25, so to speak, and can actuate the first regulator contact 27 and the second regulator contact 28.
  • the first regulator contact 27 is designed so that it is still closed over a certain movement of the longitudinal bar 30 along its switching path away. Only at temperatures of about 600 ° C, as shown in Fig.
  • the extension of the Stabreglerrohres 31 and thus the switching movement of the longitudinal bar 30 is so large that the first regulator contact 27 is opened.
  • this switching point is adjustable to adapt to certain predetermined switching temperatures, which is well known and need not be explained here. If the changeover switch 19 with the changeover switch contact 20 is in the lower position 1 and thus the energy supply of the radiant heater 13 via the first regulator contact 27, the power control is interrupted from about 600 ° C at the switching point I shown in phantom, for example by a Overlying glass ceramic hob surface to protect against overheating.
  • the changeover switch contact 20 in the upper position 2 the power control of the radiant heater 13 via the second control contact 28 takes place.
  • the second control contact 28 is opened much earlier, namely at a switching point II shown in dashed lines, with respect to the switching movement of the sensor 32 corresponds to a temperature of about 80 ° C above the radiant heater 13.
  • This switching point II is shown in Fig. 3 in the form that the dashed lines in Fig. 3 shown positions of the switching arms of the regulator contacts 27 and 28 are located.
  • the switching point II is reached much earlier or at much lower temperatures than the switching point I.
  • the approximately 80 ° C of the switching point II correspond approximately to what partially already realized as a switching point for the activation of the hot indication via the rod controller 25.
  • the second regulator contact 28 is formed so that it is closed at the second switching point II to a optical hot indication by LED or the like. to activate. Should or can not be rebuilt the second control contact 28 of its circuit according to Fig. 1 to 3, so continue to be a closing switch when the second switching point II, so also via this second regulator contact 28, a separate power relay in the control of the radiant heater 13 is provided be. This opens when closing the second regulator contact 28, so exceeding the temperature of about 80 ° C, and thus turns off in the appropriate mode of the heater. This power relay is then provided in another branch starting from the changeover switch 19 to the heating resistor 34.
  • the amount of power generation via the power regulator 15 and the first power control switch 16 is set.
  • This power level which will be explained in more detail below, be adjusted via the rotary knob 22.
  • the position of the KirschaltANDes 20 can be influenced, in which case theoretically also another switch can be provided.
  • FIG. 4 shows an embodiment in which, starting from the zero position with the tip 23 upwards, the rotary knob for the operating mode 1 is turned clockwise to the right.
  • a power level can be set starting at low power levels, which are getting bigger with further rotation.
  • the power setting for a cooking or roasting process with high temperatures is illustrated by FIGS. 4 and 5.
  • the rotary knob 22 is first rotated to the left to the illustrated and provided with 2 position, for example a stop or beyond a latching step. Then it is turned to the right by a certain minimum angle of rotation, for example, the illustrated 60 °. Characterized in that the rotary knob 22 is first rotated to the left and then to the right, the switch 19 is actuated and it is only the keep warm operation or the thermostatic operation of the radiant heater 13 possible. The choice of certain power levels is no longer possible.
  • a power stage on the power controller 15 is then adjusted by the illustrated rotation angle of about 60 °, which provides more power than is actually passed on the temperature switching behavior of the rod controller 25 at the switching point II to the radiant heater 13.
  • the concrete structure of the rotary knob 22 for the power regulator 15 and the switch 19 is left to the skilled person and is not problematic for him due to his craft practice. Such switching movements are basically also known from the activation of so-called high-boiling stages or the like.
  • Fig. 5 an alternative embodiment is shown.
  • the rotary knob 22 is connected to the power regulator 15 and the switch 19 in an unspecified manner.
  • a first angular range from 0 ° to about 300 °
  • At the mentioned angle of about 300 ° takes place on further rotation automatically and inevitably the change to the operating mode 2, ie from cooking or roasting to keep warm.
  • this is mechanically easier to implement than the solution according to FIG. 4.
  • this also applies overall a certain angle range for the fine adjustment of the power in mode 1 away.
  • either a clearly perceptible and surmountable lock can be provided between the two.
  • the rotary knob 22 can be rotated in the direction to the right just up to the angle of about 300 °. To set mode 2, it must be turned to the left from the zero position.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
EP06024087A 2005-11-25 2006-11-21 Dispositf de détection de température pour ensemble de chauffage ainsi que sa méthode de commande d'ensemble chauffant Withdrawn EP1791395A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005057105A DE102005057105A1 (de) 2005-11-25 2005-11-25 Temperaturerfassungseinrichtung für eine Heizeinrichtung sowie ein Verfahren zur Ansteuerung einer Heizeinrichtung

Publications (2)

Publication Number Publication Date
EP1791395A2 true EP1791395A2 (fr) 2007-05-30
EP1791395A3 EP1791395A3 (fr) 2008-09-10

Family

ID=37807891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06024087A Withdrawn EP1791395A3 (fr) 2005-11-25 2006-11-21 Dispositf de détection de température pour ensemble de chauffage ainsi que sa méthode de commande d'ensemble chauffant

Country Status (3)

Country Link
US (1) US7543984B2 (fr)
EP (1) EP1791395A3 (fr)
DE (1) DE102005057105A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013767A1 (de) * 2010-03-31 2011-10-06 Phoenix Contact Gmbh & Co. Kg System zur thermischen Sicherung einer elektrischen Vorrichtung
JP5977000B2 (ja) * 2011-07-12 2016-08-24 アークレイ株式会社 核酸の増幅検出方法およびキット

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1277848A (en) 1970-04-16 1972-06-14 Ranco Controls Ltd Thermostat
EP0416335A1 (fr) 1989-09-08 1991-03-13 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Interrupteur thermique
DE102004023787A1 (de) 2004-05-07 2005-12-01 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für ein Kochfeld mit einer elektrischen Anschlusseinrichtung, elektrische Anschlusseinrichtung für eine solche Heizeinrichtung sowie Verfahren zum Anschliessen einer Anschlusseinrichtung an einer Heizeinrichtung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1277848A (en) 1970-04-16 1972-06-14 Ranco Controls Ltd Thermostat
EP0416335A1 (fr) 1989-09-08 1991-03-13 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Interrupteur thermique
DE102004023787A1 (de) 2004-05-07 2005-12-01 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für ein Kochfeld mit einer elektrischen Anschlusseinrichtung, elektrische Anschlusseinrichtung für eine solche Heizeinrichtung sowie Verfahren zum Anschliessen einer Anschlusseinrichtung an einer Heizeinrichtung

Also Published As

Publication number Publication date
EP1791395A3 (fr) 2008-09-10
US7543984B2 (en) 2009-06-09
US20070121704A1 (en) 2007-05-31
DE102005057105A1 (de) 2007-05-31

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