EP0762059B1 - Dispositif électrique de sécurité pour une cuisinière ou une plaque de cuisson et méthode d'opération d'une cuisinière ou d'une plaque de cuisson - Google Patents

Dispositif électrique de sécurité pour une cuisinière ou une plaque de cuisson et méthode d'opération d'une cuisinière ou d'une plaque de cuisson Download PDF

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Publication number
EP0762059B1
EP0762059B1 EP96109964A EP96109964A EP0762059B1 EP 0762059 B1 EP0762059 B1 EP 0762059B1 EP 96109964 A EP96109964 A EP 96109964A EP 96109964 A EP96109964 A EP 96109964A EP 0762059 B1 EP0762059 B1 EP 0762059B1
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EP
European Patent Office
Prior art keywords
stove
time
kitchen
safety device
reset
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
EP96109964A
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German (de)
English (en)
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EP0762059A2 (fr
EP0762059A3 (fr
Inventor
Ulrich Pfefferkorn
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.)
Berufsforderungswerk Heidelberg GmbH
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Berufsforderungswerk Heidelberg GmbH
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Publication date
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Publication of EP0762059A2 publication Critical patent/EP0762059A2/fr
Publication of EP0762059A3 publication Critical patent/EP0762059A3/fr
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Publication of EP0762059B1 publication Critical patent/EP0762059B1/fr
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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
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0266—Cooktops
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/006—Fire prevention, containment or extinguishing specially adapted for particular objects or places for kitchens or stoves
    • 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
    • F24C15/20—Removing cooking fumes
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • the invention relates to an electrical safety device for kitchen stoves or burning points that are energetic with electrical energy or flammable Gases are operated according to the preamble of claim 1 and a method for operating a stove or a hotplate according to the preamble of claim 10.
  • Protective devices are known for kitchen stoves and cooking hobs Form of thermostats or ignition fuses that are on the stove or in in the immediate vicinity of the burning or heating point if the gas flame is absent or extinguished, interrupt the gas supply. Furthermore, herds have become known that are energetically involved electrical energy are operated, the energy being inductive is passed on to metal pots, which are due to the generated Heat eddy current losses. This means additional security because without placing a metal pot on the heating element giving off energy no heat emission is possible. Furthermore are for commercial kitchens automatic fire extinguishing systems developed similar to sprinkler systems that are also used for private hobs can. Such systems trigger an extinguishing process.
  • DE 30 39 246 A1 is an extractor hood with an adjustable Blower motor known for use in kitchens, the one of the stove surface facing moisture and / or haze and / or smoke and / or Has heat-responsive sensor element. Furthermore, two Sensor elements are present, one on the stove facing Side of the extractor hood and the other on one opposite shielded side of the hearth surface is arranged the same.
  • an electric cooker is known which, after switching on a Heat source via an operating switch and after a predetermined Time without another circuit one or more heat sources automatically turns off and after the predetermined time has elapsed the last switching of a heat source also an automatic one The electric cooker is switched off.
  • DE 35 35 743 A1 a shutdown safety device for electric cookers known for a complete shutdown of the electric cooker in the event of overheating.
  • the Power supply includes a resettable switch-off device to the Turn off power supply when the current is above a predetermined Value increases.
  • the shutdown device includes a smoke detector, the is placed outside the cooker and an electrical signal when there is smoke is able to deliver.
  • a device to interrupt the power supply is connected to the signaling devices mentioned to automatically switch the Disconnect power to the cooker.
  • the US PS 50 79 407 a device for recognizing a predetermined The boiling state of a liquid has become known on a hotplate of a kitchen stove.
  • a moisture sensor delivers one predetermined humidity a first signal, which is a timer circuit applied, which provides a second signal, which is an audible or is able to trigger visible alarm, as well as to activate the heating source the liquid is heated, to control or switch off.
  • a stable multivibrator is used within the timer circuit, on which the signal of the moisture sensor is placed.
  • the invention has for its object with an economical reasonable effort the given operational risk of kitchen stoves and Cooking areas that are energetic with electrical energy or flammable gases operated, and the risk of a house fire to drastically reduce the environmental impact of pollutants, to reduce those which arise from such fires; further should any existing stove or hotplate can be retrofitted.
  • the object is achieved by way of Various sensors arranged in the kitchen stove and / or the hotplate, which smoke sensors and / or temperature sensors and / or humidity sensors and / or fat vapor sensors and / or flame sensors are, whose signals from one equipped with a clock Evaluation electronics are processed, the one output with a Separating element, preferably electrical switch or electromagnetic Valve, for the energy supply for the kitchen stove or the hotplate is connected in such a way that the evaluation electronics limit values for smoke and / or temperature and / or water vapor and / or fat vapor and / or Flames can be specified, which are exceeded if the time is exceeded Time clock the energy supply of the kitchen stove or the hotplate switch off, the evaluation electronics one through the Operator has operated reset input, with which the Output signal of the evaluation electronics for switching off the energy supply the cooker or hob within the preset switch-off time can be reset.
  • the evaluation electronics are there if a limit value for smoke and / or flames or Temperature and / or water and / or grease vapor
  • the invention has the advantage that the electrical Safety device with an economically justifiable effort given operational risk of cookers or hobs and so on given risk of a house fire can be drastically reduced. This also reduces the environmental impact of pollutants Such fires occur drastically reduced.
  • Another economic The advantage lies in the fact that the invention older and / or disabled people are given the opportunity to longer and, above all, less risky and more independent in their To live in apartments without moving to a retirement home. It can practically all existing cookers or hobs that are energetic can be operated with electrical energy or flammable gases easily retrofitted by a gas and / or electrician , which makes it very attractive for the dissemination of the Invention is guaranteed.
  • this has one Time-controlled main safety switch for starting the kitchen range or the hotplate, which after a predetermined time, at least after reaching a predetermined time, in principle the energy supply to the kitchen stove or to the hob, even without reaching one Limit value, such as with regard to smoke development and / or temperature and / or water and / or fat vapor and / or flames, is able to switch off due to the passage of time.
  • the safety device can have an extinguishing system, those when detecting flames and / or a specific, predetermined Concentration of smoke and / or if one is exceeded predetermined temperature can be activated.
  • the evaluation electronics can acoustic and / or optical warning signals before the shutdown of the Hand over the stove.
  • the evaluation electronics of the safety device growing or swelling acoustic and / or optical signal trigger for signaling to the operator so that the reset actuated to thereby the pre-armed shutdown signal within the deactivate the possible switch-off time.
  • the safety device can preferably be in an extractor hood be integrated above the stove or the hob.
  • each Sensor or a plurality of sensors, in particular temperature sensor, be arranged, where appropriate an oven also a Has temperature sensor.
  • the security device a central temperature sensor connected to the evaluation electronics have for integral detection of the temperature at its Response to the main safety switch is able to act.
  • a method of monitoring kitchen stoves and / or hotplates, which operate energetically with electrical energy or flammable gases be using one over the kitchen range and / or the Electric safety device arranged with a hotplate Evaluation electronics that have at least one acoustic and / or optical Signal detector, is characterized in that temperature, Development of smoke, water and / or grease vapor and / or flames electrical sensors are monitored that have a predetermined limit preset and their output signals in evaluation electronics be detected, with a short time exceeding one or several of the limit values within a predetermined limit time period the acoustic signal and / or optical signaling device respond, but within this period no shutdown of the Power supply to the cooker or hotplate is triggered and the operator in response to the acoustic response and / or optical signal detectors, preferably within another, Predeterminable reset time period, trigger a reset signal manually must for a further energy supply of the kitchen range and / or the Ensure the hotplate and switch off the energy supply to the Kitchen range and / or the hotplate only takes
  • FIG. 1 there is an electrical safety device for one Kitchen stove 1 preferably and for the most part in an extractor hood 2 integrated, wherein within an energy supply line 4 for the kitchen range 1, which can be a gas line or an electrical line, a separating element 3 is arranged, which is either an electromagnetic actuatable valve or an electrical disconnector. From the separator 3 leads an energy line 6 to the kitchen stove 1, in the Separating element 3 carries a control line 5 with which the separating element 3 also the extractor hood 2 and the units arranged there electrically connected is. The extractor hood is connected to an electrical power supply 7 2 supplied with electrical energy.
  • an energy supply line 4 for the kitchen range 1 which can be a gas line or an electrical line
  • a separating element 3 is arranged, which is either an electromagnetic actuatable valve or an electrical disconnector.
  • From the separator 3 leads an energy line 6 to the kitchen stove 1, in the Separating element 3 carries a control line 5 with which the separating element 3 also the extractor hood 2 and the units arranged there
  • FIG. 2 shows a schematic representation of the elements of the safety device, integrated within the extractor hood 2 of Figure 1 could be.
  • a control panel 8 there are at least one optical one and an acoustic detector 9, 10 and a reset button 11 for resetting the output signal of the evaluation electronics and, if applicable Arranged button 37, which can be identical to the reset button 11, the but other control functions can also be assigned.
  • Arranged button 37 which can be identical to the reset button 11, the but other control functions can also be assigned.
  • a foot switch or the like may be present instead of the button.
  • An exhaust air monitoring field 12 comprises at least one thermal sensor 13, 19 for the exhaust air, a fan 14 and a smoke sensor 15. Likewise, separate from the smoke sensor 15, at least one sensor 35 can be arranged or that respond specifically to water and / or grease vapor.
  • Hob monitoring 16 has a majority of thermal sensors 17, 18, 19, 20, 21, with each hob preferably having such a thermal sensor assigned.
  • the centrally located thermal sensor 19 can preferably for the integral recording of the temperature and thus also the exhaust air serve.
  • an oven monitor 22 can also be used with a Temperature sensor 23 may be equipped.
  • a specific one Flame sensor 38 be present, which is also in the exhaust air monitoring field 12 can be integrated and which is preferably an IR sensor.
  • a central evaluation electronics 24 which is also in the extractor hood 2 can be arranged lead to the elements mentioned electrical supply lines 25, 26, 27, 28, as well as the electrical evaluation electronics 24 with the electrical control line 5 to the separating element 3 is connected, as is the electrical power supply 7 of the electrical Safety device or the extractor hood 2 via the evaluation electronics 24 is performed.
  • the function of the device is as follows:
  • the electrical sensors 13, 15, 35 of the exhaust air monitoring field 12 and the Sensors 17, 18, 19, 20, 21 of the hob monitoring 16 monitor the temperatures both the exhaust air, as well as the individual hotplates and emerging Smoke and, if necessary, water vapor and fat vapor.
  • the evaluation electronics 24 furthermore have a timer or one Timer that can also be used to monitor the cooking time.
  • the timer or the timer switches the kitchen stove under all circumstances after a predetermined period of time, this Time, however, a predetermined limit value, for example one hour, cannot exceed.
  • a predetermined limit value for example one hour
  • the timer has the task of exceeding one or more preset limits of the sensors, such as regarding the temperature or when detecting smoke or water or Grease vapor or flames, the separating element 3 within one or trigger several short limit value periods that can be preset and switch off the kitchen stove from the power supply.
  • This Short or short time limits after reaching one of the mentioned limit values can be, for example, 10 to 30 s.
  • the smoke sensors can emit a swelling acoustic and / or trigger signal, causing the operator should, the safety device, for example, several times in shorter Intervals, by pressing the reset button 11 or button 37, that everything is fine. If this message occurs or several times Messages not within a specified period of time, for example again within 10 to 25 seconds, again Switching off the kitchen range from the energy supply.
  • Figure 3 shows a further embodiment of a device which is in a Extractor hood 2 is integrated, in addition to the elements mentioned a grease filter 29 and an extinguishing system 36 are arranged; additionally there may be specific flame detectors.
  • a large button 37 is arranged within the Control panel 8.
  • the electrical Safety device can be activated by an automatic fire extinguishing system 36 be supplemented with the effect that in the event of a despite the existing Fire prevention measures, e.g. due to the fact, that there are flammable objects in the flame area of a gas stove the damage remains as low as possible. Should there still be a fire arise, the extinguishing system 36 is automatically activated and also deletes an extinguishing agent suitable according to the state of the art.
  • a central temperature sensor 19 is advantageously provided integral monitoring of the temperature of the kitchen stove for example when a given limit is reached under all circumstances turns off, the signal of this temperature sensor 19 is not by means of Reset button 11 can be reset.
  • the object of the invention is particularly applicable in households and provides an electrical safety device that a Switching off a kitchen stove or hotplates due to unusual Heat development with reset option and independent of which a shutdown due to smoke development with reset option carries out, both options integrated with an extinguishing system could be.
  • the safety device can have separate sensors for water vapor and / or grease vapor and or have flames.

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  • Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Combustion & Propulsion (AREA)
  • Electric Stoves And Ranges (AREA)
  • Air Conditioning Control Device (AREA)

Claims (11)

  1. Dispositif de sécurité électrique pour cuisinières et/ou postes de cuisson qui fonctionnent sur le plan énergétique avec de l'énergie électrique ou des gaz combustibles,
    caractérisé en ce que au-dessus de la cuisinière (1) et/ou du poste de cuisson, sont placés différents détecteurs (13,15,17,18,19,20,21,23) qui sont des détecteurs de fumée (15) et/ou des détecteurs de température et/ou des détecteurs d'humidité et/ou des détecteurs de vapeurs de graisse et/ou des détecteurs de flammes dont les signaux sont traités par une électronique d'analyse dotée d'une horloge (24) dont une sortie est reliée à un élément de coupure (3), de préférence un interrupteur électrique ou une vanne électromagnétique pour l'alimentation en énergie de la cuisinière (1) ou du poste de cuisson, de sorte que des valeurs limites pour la fumée et/ou la température et/ou la vapeur d'eau et/ou la vapeur de graisse sont imposées à l'électronique d'analyse (24), qui, lorsqu'un temps préréglable de l'horloge est dépassé, coupent de façon temporisée l'alimentation en énergie de la cuisinière (1) ou du poste de cuisson, l'électronique d'analyse (24) possédant une entrée de remise à l'état initial (11), grâce à laquelle le signal de sortie de l'électronique d'analyse (24) pour la coupure de l'alimentation en énergie de la cuisinière (1) ou du poste de cuisson peut être remis à l'état initial par l'utilisateur dans l'espace du temps de coupure préréglé.
  2. Dispositif de sécurité selon la revendication 1,
    caractérisé en ce que lorsque, en cas de dépassement d'une valeur limite pour la fumée et/ou les flammes ou la température et/ou la vapeur de graisse et/ou la vapeur d'eau, l'électronique d'analyse (24) est en mesure de délivrer un signal de coupure temporisé pour l'alimentation en énergie de la cuisinière (1) ou du poste de cuisson, ledit signal de coupure pouvant être remis à l'état initial dans l'espace du temps de temporisation.
  3. Dispositif de sécurité selon l'une des revendications 1 ou 2,
    caractérisé en ce qu'un interrupteur principal de sécurité (34) commandé en fonction du temps est prévu pour la mise en marche de la cuisinière (1) ou du poste de cuisson, ledit interrupteur étant en mesure de couper d'une façon générale l'alimentation en énergie de la cuisinière (1) ou du poste de cuisson après une période de temps préréglable, mais tout du moins lorsqu'un temps fixe prédéterminé a été atteint, ceci également sans avoir atteint une valeur limite, comme cela est le cas eu égard à la fumée et/ou à la température et/ou à la vapeur d'eau et/ou à la vapeur de graisse et/ou de flammes.
  4. Dispositif de sécurité selon l'une des revendications 1 ou 2,
    caractérisé en ce qu'une installation d'extinction (36) est prévue qui peut être activée en cas de détection de flammes et/ou de la formation de fumée d'une certaine concentration prédéfinie et/ou en cas de dépassement d'une température prédéterminée.
  5. Dispositif de sécurité selon l'une des revendications 1 ou 2,
    caractérisé en ce que lors de la cuisson ou du rôtissage donnant inévitablement lieu à la formation de fumée, l'électronique d'analyse (24) est en mesure de déclencher un signal sonore ou optique dont le volume ou l'intensité augmente pour avertir l'utilisateur que le signal de coupure doit être remis à l'état initial.
  6. Dispositif de sécurité selon la revendication 1,
    caractérisé en ce que l'électronique d'analyse (24) est en mesure de délivrer des signaux avertisseurs acoustiques et/ou optiques avant la coupure de la cuisinière (1) ou du poste de cuisson.
  7. Dispositif de sécurité selon la revendication 1,
    caractérisé en ce qu'il est intégré dans une hotte d'extraction de la vapeur (2).
  8. Dispositif de sécurité selon l'une des revendications 1 ou 7,
    caractérisé en ce que, en fonction du nombre de postes de cuisson, un tel détecteur ou de tels détecteurs, notamment un détecteur de température (17,18,19,20,21) sont placés au-dessus de chacun des postes de cuisson, de même que, le cas échéant, un four de cuisson fait également état d'un détecteur de température (23).
  9. Dispositif de sécurité selon la revendication 1,
    caractérisé en ce que ledit dispositif présente un détecteur de température central (19) relié à l'électronique d'analyse (24) pour l'enregistrement intégral de la température et qui est en mesure d'agir sur l'interrupteur principal de sécurité (34).
  10. Procédé pour la surveillance de cuisinières (1) et/ou de postes de cuisson qui fonctionnent sur le plan énergétique avec de l'énergie électrique ou des gaz combustibles, faisant appel à un dispositif de sécurité électrique placé au-dessus de la cuisinière (1) et/ou du poste de cuisson, ledit dispositif de sécurité électrique étant doté d'une électronique d'analyse (24) qui fait état d'au moins un générateur de signaux acoustiques et/ou optiques,
    caractérisé en ce que la température, la formation de fumée, la vapeur d'eau et/ou de graisse et/ou les flammes sont surveillées au moyen de détecteurs électriques (13,15,17,18,19,20,21,23) qui sont préréglés en fonction d'une valeur limite prédéterminée et dont les signaux de sortie sont captés par une électronique d'analyse (24), le ou les générateurs de signaux acoustiques et/ou optiques étant déclenchés en cas de dépassement de courte durée de l'une ou de plusieurs valeurs limites dans l'espace de la fourchette de temps définie pour les valeurs limites, aucune coupure de l'alimentation en énergie de la cuisinière (1) ou du poste de cuisson n'étant encore déclenchée dans ce laps de temps et l'utilisateur devant enclencher manuellement un signal de remise à l'état initial en réponse au déclenchement de l'avertisseur acoustique et/ou optique, afin d'assurer l'approvisionnement en énergie de la cuisinière (1) et/ou du poste de cuisson et qu'une coupure de l'alimentation en énergie de la cuisinière (1) et/ou du poste de cuisson ne puisse se produire ou bien que lorsque l'une ou plusieurs des valeurs limites des détecteurs a dépassé le laps de temps des valeurs limites, ou bien lorsque l'utilisateur n'a pas enclenché le signal de remise à l'état initial en l'espace du laps de temps assigné pour la remise à l'état initial, ledit laps de temps pour la remise à l'état initial pouvant être choisi de façon à être plus petit ou plus grand que la fourchette de temps déterminée pour les valeurs limites et le laps de temps pour la remise à l'état initial pouvant se situer ou bien à l'intérieur de la fourchette de temps des valeurs limites ou bien dépasser celle-ci.
  11. Procédé selon la revendication 10,
    caractérisé en ce que le signal de remise à l'état initial doit être déclenché à l'intérieur d'un laps de temps préréglable de remise à l'état initial.
EP96109964A 1995-06-20 1996-06-20 Dispositif électrique de sécurité pour une cuisinière ou une plaque de cuisson et méthode d'opération d'une cuisinière ou d'une plaque de cuisson Expired - Lifetime EP0762059B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19522300 1995-06-20
DE19522300A DE19522300C2 (de) 1995-06-20 1995-06-20 Elektrische Sicherheitsvorrichtung für Kochstellen

Publications (3)

Publication Number Publication Date
EP0762059A2 EP0762059A2 (fr) 1997-03-12
EP0762059A3 EP0762059A3 (fr) 1997-12-17
EP0762059B1 true EP0762059B1 (fr) 2001-08-29

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EP96109964A Expired - Lifetime EP0762059B1 (fr) 1995-06-20 1996-06-20 Dispositif électrique de sécurité pour une cuisinière ou une plaque de cuisson et méthode d'opération d'une cuisinière ou d'une plaque de cuisson

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EP (1) EP0762059B1 (fr)
DE (2) DE19522300C2 (fr)

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DE19522300A1 (de) 1997-01-02
DE19522300C2 (de) 1997-05-28
EP0762059A2 (fr) 1997-03-12
DE59607570D1 (de) 2001-10-04
EP0762059A3 (fr) 1997-12-17

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