WO2002023092A1 - Hob comprising at least one atmospheric gas burner - Google Patents

Hob comprising at least one atmospheric gas burner Download PDF

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Publication number
WO2002023092A1
WO2002023092A1 PCT/EP2001/008216 EP0108216W WO0223092A1 WO 2002023092 A1 WO2002023092 A1 WO 2002023092A1 EP 0108216 W EP0108216 W EP 0108216W WO 0223092 A1 WO0223092 A1 WO 0223092A1
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WO
WIPO (PCT)
Prior art keywords
cover
temperature
hob
bore
gas supply
Prior art date
Application number
PCT/EP2001/008216
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German (de)
French (fr)
Inventor
Torsten Gabelmann
Original Assignee
Schott Glas
Carl-Zeiss-Stiftung Trading As Schott Glas
Carl-Zeiss-Stiftung
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 Schott Glas, Carl-Zeiss-Stiftung Trading As Schott Glas, Carl-Zeiss-Stiftung filed Critical Schott Glas
Priority to AU2001289665A priority Critical patent/AU2001289665A1/en
Publication of WO2002023092A1 publication Critical patent/WO2002023092A1/en

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Classifications

    • 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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium

Definitions

  • the invention relates to a hob with at least one atmospheric gas burner, which is received in a bore in a plate-shaped cover made of temperature-limited material.
  • Such gas hobs typically have a cover made of thermally or chemically toughened soda-lime glass.
  • This glass has the property that it is subject to a maximum temperature limitation so that it retains its prestress and thus retains its significantly improved resistance to mechanical and thermal loads and is not destroyed during use of the hob.
  • This excess temperature can be prevented by selecting the diameter of the holes in the cover that receive the atmospheric gas burners as large as possible and underpinning them with a sheet metal trough.
  • the edge of the holes is bordered by a sleeve.
  • this principle can only be carried out up to a certain diameter and it cannot be prevented that in exceptional cooking situations, for example in the case of empty dishes, the maximum temperature which is only permissible for a short time is exceeded.
  • the problems are analogous or similar if the cover of the gas hob is made of another temperature-limited material, such as plastic or wood.
  • the invention has for its object to design the cooktop mentioned in the introduction so that the maximum application temperatures of the respective cover material are not exceeded.
  • a hob with at least one atmospheric gas burner which is received in a bore of a plate-shaped cover made of temperature-limited material, according to the invention in that a temperature sensor arrangement is attached to the cover in the edge region towards the bore, the Output signal is connected to a control or control stage, and that in the gas supply line to the atmospheric gas burner, an actuator for changing the gas supply is connected, which is connected to the output of the control or control stage and throttles the gas supply as soon as the cover temperature a predetermined Value exceeds.
  • the inventive design of the hob that is, by reducing the burner output, makes it possible to reduce or limit the temperatures that occur in the cover in unusual cooking situations so that the short-term permissible maximum temperature is not exceeded, thereby preventing temperature overruns that are hazardous to safety.
  • the measures according to the invention thus contribute to greater operational reliability.
  • the diameter of the boring bars can be kept small and flat, ie low-profile, burners can be used, since the freedom of design is increased.
  • the hob is preferably designed such that the cover is formed by a thermally or chemically prestressed soda-lime plate.
  • this glass plate is printed on the back without coloring, so that it is not transparent, and is then thermally tempered.
  • a dark colored glass can also be used. Decorated printing is also possible.
  • the measure according to the invention ensures that the maximum permissible temperature for this glass is not exceeded for a short time and thus the glass plate retains sufficient prestress over the guaranteed service life, which is typically approx. 80% of the original prestress, since the maximum permitted temperatures mean that Preload is reduced by about 20%.
  • the cover is formed by a clear and printed or colored or also decorated plate made of borosilicate glass, preferably a floated borosilicate glass.
  • the cover can in principle also consist of plastic or be formed by a wood worktop for fitted kitchens. Both materials are also limited in the application temperature.
  • the temperature sensor arrangement is formed by a strip-shaped glass ceramic temperature measuring resistor. It is advantageous if the strip-shaped glass ceramic temperature measuring resistor is applied peripherally around the bore at a predetermined distance from the bore.
  • Such a temperature sensor arrangement allows easy detection of a realistic average temperature in the hot area, i.e. in the area of the plate that is most thermally stressed by the gas burner.
  • Contact sensors can also be used, e.g. be pressed against the cover from below by means of a spring or screwed to the burner attachment.
  • a bimetal element can also be used.
  • FIG. 1 The only figure of the patent drawing shows a section of a hob with an atmospheric gas burner 1 with a burner head 1 a, to which gas or a gas / air mixture is fed in a conventional manner via a feed pipe 1 b.
  • the burner head 1 a is received in a bore 2 of a plate-shaped cover 3 which defines the cooking surface.
  • a metallic sleeve is typically arranged around this bore 2, which forms a seal against overflowing cookware and at the same time protects the edge of the cover 3 against mechanical impacts. For the sake of simplicity, it is not shown in the figure.
  • the drawing also shows a pot support 4, which stands on the cover 3 and on which the pots, pans etc. are placed over the gas burner 1 become.
  • the pot support can also be set up in a metal trough that is fastened beneath this bore, even if the bore 2 has a large diameter.
  • the cover 3 typically consists of a non-colored, provided with a non-transparent printing / coating, thermally or chemically toughened soda-lime glass.
  • the glass can also be light colored or dark colored so that a non-transparent coating is then no longer necessary.
  • Such a glass gradually loses its prestress, depending on the temperature load over time, and the faster the higher the maximum temperature, as can be seen from the table below, which shows the dependence of the permissible loading time of the glass plate on the respective, maximum operating temperature:
  • the pot support height and the diameter of the bore 2 or the power of the gas burner 1 are therefore coordinated with one another such that the temperature increase in the area of the glass cover around the burner, caused by the hot combustion gases and the heat reflection of the pot, is in itself predetermined limits.
  • the maximum thermal limit can be exceeded in certain cooking situations, in particular in unusual cooking situations, such as when the pot is boiled empty.
  • permissible maximum temperature which may briefly act on the glass, has been exceeded by up to 20%, which at least significantly reduces the life of the glass cover, but can also lead to the glass cover breaking, ie endangering operational safety.
  • a temperature sensor 5 is attached in the temperature-sensitive area of the glass cover 3, which is realized by known means, e.g. consists of a strip-shaped glass ceramic temperature measuring resistor according to DE-PS 21 39 828. This temperature sensor 5 provides an ACTUAL value signal for an electronic control.
  • Control stage 6 the output of which is connected to an actuator 7 in the gas supply line 1 b, which can be constructed mechanically or electronically, and, depending on the temperature signal of the temperature sensor 5, results in a throttling of the gas supply in comparison with a setpoint stored in stage 6 , As a result of this reduction in the power of the gas burner 1, a reduction in the temperature in the glass cover 3 is achieved, as a result of which temperature overshoots which endanger safety and life expectancy are prevented.
  • more than just one temperature sensor is preferably arranged in the area of the bore 2 in the glass cover 3, forming a mean temperature value.
  • the strip is expediently placed peripherally around the edge region of the bore 2.
  • the controller 6 can be a two-point controller, ie which throttles the gas supply when the temperature signal from the temperature sensor 5 exceeds the setpoint and which increases the gas supply again when the temperature has dropped below the setpoint.
  • a controller can be implemented, for example, by a bimetal element.
  • a continuous controller is preferably used, which continuously regulates the temperature of the glass cover.
  • a maximum value controller can also be used in simple designs, which ensures that a maximum value of the temperature is not exceeded.
  • a plate made of borosilicate glass can also be used, which can also be loaded up to a maximum temperature of 310 ° C.
  • the invention in addition to increasing the operational reliability by limiting the temperature in the cover 3, the invention also advantageously gives greater freedom with regard to the construction of the hob with the atmospheric gas burners.
  • the metallic sleeve can in principle be omitted, and flatter burners can be used, i.e. it can generally be the distance between the pot footprint of the pot support 4 and the cover

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Control Of Combustion (AREA)

Abstract

The invention relates to a modern hob wherein a gas burner (1) is arranged in a characteristic manner, in a bore (2), of a plate-shaped covering (3) made from temperature limited material, preferably transparent pre-stressed glass. The aim of the invention is to prevent the covering (3) around the gas burner (1) from being exposed to a thermic constraint higher than the admissible value. According to the invention, the covering (3) around the edges of the boring (2) is placed near to a temperature sensor arrangement (5), whose output signal is controlled by a regulating step or a control step (6), and an actuator (7) which controls the gas supply is arranged in the gas supply path (1b) of the atmospheric gas burner (1). Said actuator is connected to the output of the regulation step and the control step (6) and restricts the gas supply as long as the temperature of the covering exceeds a predefined value.

Description

Kochfeld mit mindestens einem atmosphärischen Gasbrenner Hob with at least one atmospheric gas burner
Beschreibung:Description:
Die Erfindung bezieht sich auf ein Kochfeld mit mindestens einem atmosphärischen Gasbrenner, der in einer Bohrung einer plattenförmigen Abdeckung aus temperaturlimitierten Material aufgenommen ist.The invention relates to a hob with at least one atmospheric gas burner, which is received in a bore in a plate-shaped cover made of temperature-limited material.
Derartige Gas-Kochfelder, sogenannte "Hob Tops", besitzen typischerweise eine Abdeckung aus thermisch oder chemisch vorgespanntem Kalk-Natron- Glas. Dieses Glas hat dabei die Eigenschaft, daß es einer maximalen Temperararbegrenzung unterliegt, damit es seine Vorspannung behält und somit seine deutlich verbesserte Widerstandsfähigkeit gegen mechanische und thermische Belastungen behält und nicht während des Gebrauches des Kochfeldes zerstört wird.Such gas hobs, so-called "hob tops", typically have a cover made of thermally or chemically toughened soda-lime glass. This glass has the property that it is subject to a maximum temperature limitation so that it retains its prestress and thus retains its significantly improved resistance to mechanical and thermal loads and is not destroyed during use of the hob.
Es hat sich jedoch im praktischen Betrieb gezeigt, daß die maximal zulässige Temperatur in bestimmten Kochsituationen überschritten wird. Untersuchungen an marktüblichen Geräten haben dabei gezeigt, daß die zugelassene maximale Temperatur, die kurzzeitig auf das Glas einwirken darf, um bis zu 20 % überschritten wurde.However, it has been shown in practical operation that the maximum permissible temperature is exceeded in certain cooking situations. Studies on standard equipment have shown that the maximum permissible temperature, which may act briefly on the glass, has been exceeded by up to 20%.
Diese Temperamrüberschreitung kann man verhindern, indem man den Durchmesser der die atmosphärischen Gasbrenner aufnehmenden Bohrungen in der Abdeckung möglichst groß wählt und mit einer Blechwanne unterfängt. Außerdem wird der Rand der Bohrungen durch eine Manschette eingefaßt. Dieses Prinzip läßt sich jedoch nur bis zu einem bestimmten Durchmesser durchführen und man kann auch nicht verhindern, daß es in außergewöhnlichen Kochsituationen, z.B. bei einem leerkochenden Geschirr, dennoch zu einer Überschreitung der nur kurzzeitig zulässigen Maximaltemperatur kommt.This excess temperature can be prevented by selecting the diameter of the holes in the cover that receive the atmospheric gas burners as large as possible and underpinning them with a sheet metal trough. In addition, the edge of the holes is bordered by a sleeve. However, this principle can only be carried out up to a certain diameter and it cannot be prevented that in exceptional cooking situations, for example in the case of empty dishes, the maximum temperature which is only permissible for a short time is exceeded.
Die Probleme sind analog bzw. ähnlich, wenn die Abdeckung des Gas- Kochfeldes aus einem anderen temperatarlimitierten Material, wie Kunststoff oder Holz, aufgebaut ist.The problems are analogous or similar if the cover of the gas hob is made of another temperature-limited material, such as plastic or wood.
Der Erfindung liegt die Aufgabe zugrunde, das eingangs bezeichnete Kochfeld so auszubilden, daß die maximalen Anwendungstemperaturen des jeweiligen Abdeckungsmaterials nicht überschritten werden.The invention has for its object to design the cooktop mentioned in the introduction so that the maximum application temperatures of the respective cover material are not exceeded.
Die Lösung dieser Aufgabe gelingt bei einem Kochfeld mit mindestens einem atmosphärischen Gasbrenner, der in einer Bohrung einer plattenförmigen Abdeckung aus temperaturlimitierten Material aufgenommen ist, gemäß der Erfindung dadurch, daß an der Abdeckung im Randbereich zu der Bohrung hin eine Temperaturfühler-Anordnung angebracht ist, deren Ausgangssignal auf eine Regel- oder Steuerstufe geschaltet ist, und daß in die Gaszufuhrleitung zu dem atmosphärischen Gasbrenner ein Stellglied für eine Veränderung der Gaszufuhr geschaltet ist, das mit dem Ausgang der Regel- oder Steuerstufe verbunden ist und die Gaszufuhr drosselt, sobald die Abdeckungstemperatur einen vorgegebenen Wert überschreitet.This object is achieved in a hob with at least one atmospheric gas burner, which is received in a bore of a plate-shaped cover made of temperature-limited material, according to the invention in that a temperature sensor arrangement is attached to the cover in the edge region towards the bore, the Output signal is connected to a control or control stage, and that in the gas supply line to the atmospheric gas burner, an actuator for changing the gas supply is connected, which is connected to the output of the control or control stage and throttles the gas supply as soon as the cover temperature a predetermined Value exceeds.
Durch die erfindungsgemäße Ausbildung des Kochfeldes, d.h. durch die Reduzierung der Brennerleistung, gelingt es, die in außergewöhnlichen Kochsitaationen in der Abdeckung auftretenden Temperaturen so zu reduzieren bzw. zu begrenzen, daß die kurzfristig zulässige Maximaltemperatur nicht überschritten wird, wodurch sicherheitsgefährdende Temperaturüberschreitungen verhindert werden. Die erfindungsgemäßen Maßnahmen tragen somit zu einer höheren Betriebssicherheit bei. Darüber hinaus können die Durchmesser der Bohrangen klein gehalten und flache, d.h. niedrig bauende, Brenner verwendet werden, da die Konstruktions-Freiheit erhöht wird.The inventive design of the hob, that is, by reducing the burner output, makes it possible to reduce or limit the temperatures that occur in the cover in unusual cooking situations so that the short-term permissible maximum temperature is not exceeded, thereby preventing temperature overruns that are hazardous to safety. The measures according to the invention thus contribute to greater operational reliability. About that In addition, the diameter of the boring bars can be kept small and flat, ie low-profile, burners can be used, since the freedom of design is increased.
Vorzugsweise ist gemäß einer Ausgestaltung der Erfindung das Kochfeld so ausgebildet, daß die Abdeckung durch eine thermisch oder chemisch vorgespannte Kalk-Natron-Platte gebildet ist. Typischerweise wird dabei diese Glasplatte ohne Einfärbung rückseitig bedruckt, damit sie nicht transparent ist, und wird anschließend thermisch vorgespannt. Allerdings kann auch ein dunkel eingefärbtes Glas verwendet werden. Auch eine dekorierte Bedruckung ist möglich.According to one embodiment of the invention, the hob is preferably designed such that the cover is formed by a thermally or chemically prestressed soda-lime plate. Typically, this glass plate is printed on the back without coloring, so that it is not transparent, and is then thermally tempered. However, a dark colored glass can also be used. Decorated printing is also possible.
Durch die erfindungsgemäße Maßnahme wird dabei erreicht, daß die für dieses Glas kurzzeitig zulässige Maximaltemperatur nicht überschritten wird und damit die Glasplatte über die garantierte Lebensdauer eine ausreichende Vorspannung behält, die typischerweise ca. 80 % der ursprünglichen Vorspannung beträgt, da durch die maximal zugelassenen Temperaturen die Vorspannung etwa um 20 % abgebaut wird.The measure according to the invention ensures that the maximum permissible temperature for this glass is not exceeded for a short time and thus the glass plate retains sufficient prestress over the guaranteed service life, which is typically approx. 80% of the original prestress, since the maximum permitted temperatures mean that Preload is reduced by about 20%.
Vergleichbar liegen die Verhältnisse, wenn gemäß einer alternativen Ausgestaltung die Abdeckung durch eine klare und bedruckte oder eingefärbte bzw. auch dekorierte Platte aus Borosilikatglas, vorzugsweise ein gefloatetes Borosilikatglas, gebildet ist.The situation is comparable if, according to an alternative embodiment, the cover is formed by a clear and printed or colored or also decorated plate made of borosilicate glass, preferably a floated borosilicate glass.
Die Abdeckung kann prinzipiell auch aus Kunststoff bestehen oder durch eine Holzarbeitsplatte für Einbauküchen gebildet sein. Beide Materialien sind ebenfalls in der Anwendungstemperur limitiert.The cover can in principle also consist of plastic or be formed by a wood worktop for fitted kitchens. Both materials are also limited in the application temperature.
Für die Ausbildung der Temperaturfühler-Anordnung stehen dem Fachmann eine Reihe von bekannten Möglichkeiten zur Verfügung. Eine besonders günstige Ausführungsform ergibt sich, wenn die Temperaturfühler-Anordnung durch einen streifenförmigen Glaskeramik- Temperaturmeßwiderstand gebildet ist. Dabei ist es vorteilhaft, wenn der streifenförmige Glaskeramik-Temperaturmeßwiderstand im vorgegebenen Abstand zur Bohrung peripher um die Bohrung aufgebracht ist.A number of known possibilities are available to the person skilled in the art for the formation of the temperature sensor arrangement. A particularly favorable embodiment results if the temperature sensor arrangement is formed by a strip-shaped glass ceramic temperature measuring resistor. It is advantageous if the strip-shaped glass ceramic temperature measuring resistor is applied peripherally around the bore at a predetermined distance from the bore.
Eine derartige Temperaturfühler-Anordnung erlaubt eine einfache Erfassung einer realistischen mittleren Temperatur im Heiß-Bereich, d.h. in dem Bereich der Platte, die am meisten thermisch durch den Gasbrenner beansprucht wird.Such a temperature sensor arrangement allows easy detection of a realistic average temperature in the hot area, i.e. in the area of the plate that is most thermally stressed by the gas burner.
Auch sind Kontaktfühler anwendbar, die z.B. mittels einer Feder von unten gegen die Abdeckung angepreßt werden oder mit der Brennerbefestigung verschraubt werden. Im einfachsten Fall kann auch ein Bimetall-Element Anwendung finden.Contact sensors can also be used, e.g. be pressed against the cover from below by means of a spring or screwed to the burner attachment. In the simplest case, a bimetal element can also be used.
Weitere ausgetaltende Merkmale und Vorteile der Erfindung ergeben sich anhand der Beschreibung eines in der Patentzeichnung dargestellten Ausfuhrungsbeispieles der Erfindung.Further design features and advantages of the invention result from the description of an exemplary embodiment of the invention shown in the patent drawing.
Die einzige Figur der Patentzeichnung zeigt einen Ausschnitt aus einem Kochfeld mit einem atmosphärischen Gasbrenner 1 mit einem Brennerkopf 1 a, dem über ein Zuleitungsrohr 1 b in konventioneller Weise Gas bzw. ein Gas-/Luftgemisch zugeführt wird. Der Brennerkopf 1 a ist in einer Bohrung 2 einer die Kochfläche vorgebenden plattenförmigen Abdeckung 3 aufgenommen. Um diese Bohrung 2 herum ist typischerweise eine metallische Manschette angeordnet, die eine Dichtung gegen überlaufendes Kochgut bildet und zugleich den Rand der Abdeckung 3 gegen mechanische Stöße schützt. Sie ist der Einfachheit halber in der Figur nicht dargestellt.The only figure of the patent drawing shows a section of a hob with an atmospheric gas burner 1 with a burner head 1 a, to which gas or a gas / air mixture is fed in a conventional manner via a feed pipe 1 b. The burner head 1 a is received in a bore 2 of a plate-shaped cover 3 which defines the cooking surface. A metallic sleeve is typically arranged around this bore 2, which forms a seal against overflowing cookware and at the same time protects the edge of the cover 3 against mechanical impacts. For the sake of simplicity, it is not shown in the figure.
Die Zeichnung zeigt ferner einen Topfträger 4, der auf der Abdeckung 3 steht und auf dem die Töpfe, Pfannen usw. über dem Gasbrenner 1 aufgestellt werden. Der Topfträger kann auch bei großem Durchmesser der Bohrung 2 in einer unterhalb dieser Bohrung befestigten Blechmulde aufgestellt sein.The drawing also shows a pot support 4, which stands on the cover 3 and on which the pots, pans etc. are placed over the gas burner 1 become. The pot support can also be set up in a metal trough that is fastened beneath this bore, even if the bore 2 has a large diameter.
Die Abdeckung 3 besteht typischerweise aus einem nicht eingefärbten, mit einer nicht transparenten Bedruckung/Beschichtung versehenen, thermisch oder chemisch vorgespannten Kalk-Natron-Glas. Das Glas kann dabei auch hell eingefärbt sein bzw. auch dunkel eingefärbt sein, so daß dann keine nicht transparente Beschichtung mehr notwendig ist. Ein derartiges Glas verliert abhängig von der zeitlichen Temperaturbeanspruchung allmählich seine Vorspannung, und zwar umso schneller, je höher die maximale Temperator ist, wie aus der nachfolgenden Tabelle hervorgeht, die die Abhängigkeit der zulässigen Belastungsdauer der Glasplatte von der jeweiligen, maximalen Betriebstemperatur zeigt:The cover 3 typically consists of a non-colored, provided with a non-transparent printing / coating, thermally or chemically toughened soda-lime glass. The glass can also be light colored or dark colored so that a non-transparent coating is then no longer necessary. Such a glass gradually loses its prestress, depending on the temperature load over time, and the faster the higher the maximum temperature, as can be seen from the table below, which shows the dependence of the permissible loading time of the glass plate on the respective, maximum operating temperature:
Figure imgf000007_0001
Figure imgf000007_0001
Die Topfträgerhöhe und der Durchmesser der Bohrung 2 bzw. die Leistung des Gasbrenners 1 sind daher so aufeinander abgestimmt, daß im Regelfall die Temperaturerhöhung im Bereich der Glas-Abdeckung um den Brenner herum, bewirkt durch die heißen Verbrennungsgase und die Wärmerückstrahlung des Topfes, sich in vorgegebenen Grenzen hält.The pot support height and the diameter of the bore 2 or the power of the gas burner 1 are therefore coordinated with one another such that the temperature increase in the area of the glass cover around the burner, caused by the hot combustion gases and the heat reflection of the pot, is in itself predetermined limits.
Es hat sich jedoch gezeigt, daß die maximale thermische Begrenzung in bestimmten Kochsituationen, insbesondere in außergewöhnlichen Kochsituationen, wie z.B. beim Leerkochen des Topfes, überschritten werden kann. Bei Untersuchungen an marktüblichen Geräten wurde festgestellt, daß die zulässige maximale Temperatur, welche kurzzeitig auf das Glas einwirken darf, um bis zu 20 % überschritten wurde, was zumindest die Lebensdauer der Glas-Abdeckung deutlich herabsetzt, aber auch zu einem Brach der Glas- Abdeckung führen kann, d.h. die Betriebssicherheit gefährdet.However, it has been shown that the maximum thermal limit can be exceeded in certain cooking situations, in particular in unusual cooking situations, such as when the pot is boiled empty. In tests on standard equipment, it was found that the permissible maximum temperature, which may briefly act on the glass, has been exceeded by up to 20%, which at least significantly reduces the life of the glass cover, but can also lead to the glass cover breaking, ie endangering operational safety.
Um dies zu verhindern, ist in dem temperaturgefährdeten Bereich der Glas- Abdeckung 3 ein Temperaturfühler 5 angebracht, der mit bekannten Mitteln realisiert wird, z.B. aus einem streifenförmigen Glaskeramik- Temperaturmeßwiderstand gemäß der DE-PS 21 39 828 besteht. Dieser Temperaturfühler 5 liefert ein IST- Wertsignal für eine elektronische Regelbzw. Steuerstufe 6, deren Ausgang auf ein Stellglied 7 in der Gaszuleitung 1 b geschaltet ist, das mechanisch oder elektronisch aufgebaut sein kann, und abhängig von dem Temperatur-Signal des Temperaturfühlers 5 im Vergleich zu einem in der Stufe 6 gespeicherten Sollwert eine Drosselung der Gaszufuhr bewirkt. Durch diese Reduzierung der Leistung des Gasbrenners 1 wird eine Reduzierung der Temperatur in der Glas-Abdeckung 3 erreicht, wodurch sicherheits- und lebensdauergefährdende Temperaturüberschreitungen verhindert werden.To prevent this, a temperature sensor 5 is attached in the temperature-sensitive area of the glass cover 3, which is realized by known means, e.g. consists of a strip-shaped glass ceramic temperature measuring resistor according to DE-PS 21 39 828. This temperature sensor 5 provides an ACTUAL value signal for an electronic control. Control stage 6, the output of which is connected to an actuator 7 in the gas supply line 1 b, which can be constructed mechanically or electronically, and, depending on the temperature signal of the temperature sensor 5, results in a throttling of the gas supply in comparison with a setpoint stored in stage 6 , As a result of this reduction in the power of the gas burner 1, a reduction in the temperature in the glass cover 3 is achieved, as a result of which temperature overshoots which endanger safety and life expectancy are prevented.
Zur Verbesserung der Temperaturerfassung werden vorzugsweise mehr als nur ein Temperaturfühler im Bereich der Bohrung 2 in der Glas-Abdeckung 3 angeordnet, unter Bildung eines Temperatur-Mittelwertes.To improve the temperature detection, more than just one temperature sensor is preferably arranged in the area of the bore 2 in the glass cover 3, forming a mean temperature value.
Zur Realisierung einer Temperaturmittelwertbildung bei Verwendung eines streifenförmigen Glaskeramik-Temperaturmeßwiderstandes wird zweckmäßig der Streifen peripher um den Randbereich der Bohrung 2 gelegt.In order to realize a mean temperature value when using a strip-shaped glass ceramic temperature measuring resistor, the strip is expediently placed peripherally around the edge region of the bore 2.
Auch sind, wie bereits erwähnt, mechanische Kontaktfühler möglich.As already mentioned, mechanical contact sensors are also possible.
Der Regler 6 kann ein Zweipunktregler sein, d.h. der die Gaszufuhr drosselt, wenn das Temperatursignal des Temperaturfühlers 5 den Sollwert überschreitet und der die Gaszufuhr wieder erhöht, wenn die Temperatur unter den Sollwert abgesunken ist. Ein solcher Regler kann beispielsweise durch ein Bimetallelement realisiert werden.The controller 6 can be a two-point controller, ie which throttles the gas supply when the temperature signal from the temperature sensor 5 exceeds the setpoint and which increases the gas supply again when the temperature has dropped below the setpoint. Such a controller can be implemented, for example, by a bimetal element.
Vorzugsweise wird jedoch ein kontinuierlicher Regler verwendet, der die Temperatur der Glas-Abdeckung stetig ausregelt.However, a continuous controller is preferably used, which continuously regulates the temperature of the glass cover.
Auch ein Maximalwert-Regler kann bei einfachen Ausführungen zur Anwendung kommen, der dafür sorgt, daß ein Maximalwert der Temperatur nicht überschritten wird.A maximum value controller can also be used in simple designs, which ensures that a maximum value of the temperature is not exceeded.
Anstelle einer Glas-Abdeckung aus thermisch oder chemisch vorgespanntem Glas kann auch eine Platte aus Borosilikatglas Anwendung finden, die ebenfalls bis zu einer Maximaltemperatur von 310° C belastbar ist.Instead of a glass cover made of thermally or chemically toughened glass, a plate made of borosilicate glass can also be used, which can also be loaded up to a maximum temperature of 310 ° C.
Aber auch andere temperaturlimitierte Materialien wie Kunststoff oder Holz entsprechend den Arbeitsplatten der Küchen, können für den Aufbau der Abdeckung 3 verwendet werden.However, other temperature-limited materials such as plastic or wood corresponding to the worktops of the kitchens can also be used for the construction of the cover 3.
Neben der Erhöhung der Betriebssicherheit durch die Begrenzung der Temperatur in der Abdeckung 3 verleiht die Erfindung auch mit Vorteil eine größere Freiheit bezüglich der Konstruktion des Kochfeldes mit den atmosphärischen Gasbrennern.In addition to increasing the operational reliability by limiting the temperature in the cover 3, the invention also advantageously gives greater freedom with regard to the construction of the hob with the atmospheric gas burners.
Es können kleinere Bohrungen 2 ausgebildet werden, die metallische Manschette kann prinzipiell entfallen, und es sind flachere Brenner verwendbar, d.h. es kann generell der Abstand zwischen der Topf-Aufstellfläche des Topfträgers 4 und der AbdeckungSmaller bores 2 can be formed, the metallic sleeve can in principle be omitted, and flatter burners can be used, i.e. it can generally be the distance between the pot footprint of the pot support 4 and the cover
3 verringert werden. 3 can be reduced.

Claims

Patentansprüche claims
1. Kochfeld mit mindestens einem atmosphärischen Gasbrenner (1), der in einer Bohrung (2) einer plattenförmigen Abdeckung (3) aus temperatarlimitierten Material aufgenommen ist, dadurch gekennzeichnet, daß an der Abdeckung (3) im Randbereich zu der Bohrung (2) hin eine Temperaturfühler-Anordnung (5) angebracht ist, deren Ausgangssignal auf eine Regel- oder Steuerstufe (6) geschaltet ist, und daß in die Gaszuführleitung (1 b) zu dem atmosphärischen Gasbrenner (1) ein Stellglied (7) für eine Veränderung der Gaszufuhr geschaltet ist, das mit dem Ausgang der Regel- oder Steuerstafe (6) verbunden ist und die Gaszufuhr drosselt, sobald die Abdeckungstemperatar einen vorgegebenen Wert überschreitet.1. Hob with at least one atmospheric gas burner (1) which is accommodated in a bore (2) of a plate-shaped cover (3) made of temperature-limited material, characterized in that on the cover (3) in the edge region towards the bore (2) a temperature sensor arrangement (5) is attached, the output signal of which is connected to a regulating or control stage (6), and that in the gas supply line (1 b) to the atmospheric gas burner (1) an actuator (7) for changing the gas supply is switched, which is connected to the output of the control or tax penalty (6) and throttles the gas supply as soon as the cover temperature exceeds a predetermined value.
2. Kochfeld nach Anspruch 1, dadurch gekennzeichnet, daß die Abdeckung (3) durch eine thermisch oder chemisch vorgespannte Kalk- Natron-Platte gebildet ist.2. Hob according to claim 1, characterized in that the cover (3) is formed by a thermally or chemically prestressed soda-lime plate.
3. Kochfeld nach Anspruch 1, dadurch gekennzeichnet, daß die Abdeckung (3) durch eine Platte aus Borosilikatglas gebildet ist.3. Hob according to claim 1, characterized in that the cover (3) is formed by a plate made of borosilicate glass.
4. Kochfeld nach Ansprach 1, dadurch gekennzeichnet, daß die Abdeckung (3) aus Kunststoff besteht.4. Hob according spoke 1, characterized in that the cover (3) consists of plastic.
5. Kochfeld nach Ansprach 1, dadurch gekennzeichnet, daß die Abdeckung (3) durch eine Holzarbeitsplatte für Einbauküchen gebildet ist.5. Hob according spoke 1, characterized in that the cover (3) is formed by a wood worktop for fitted kitchens.
6. Kochfeld nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Temperaturfühler-Anordnung (5) durch einen streifenförmigen Glaskeramik-Temperaturmeßwiderstand gebildet ist. 6. Hob according to one of claims 1 to 5, characterized in that the temperature sensor arrangement (5) is formed by a strip-shaped glass ceramic temperature measuring resistor.
7. Kochfeld nach Ansprach 6, dadurch gekennzeichnet, daß der streifenförmige Glaskeramik-Temperatarmeßwiderstand im vorgegebenen Abstand zur Bohrung (2) peripher um die Bohrung (2) aufgebracht ist.7. Hob according spoke 6, characterized in that the strip-shaped glass ceramic temperature measuring resistor is applied peripherally around the bore (2) at a predetermined distance from the bore (2).
8. Kochfeld nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Temperaturfühler-Anordnung durch mindestens einen Kontaktfühler gebildet ist. 8. Hob according to one of claims 1 to 5, characterized in that the temperature sensor arrangement is formed by at least one contact sensor.
PCT/EP2001/008216 2000-09-14 2001-07-17 Hob comprising at least one atmospheric gas burner WO2002023092A1 (en)

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DE10045484A DE10045484A1 (en) 2000-09-14 2000-09-14 Hob with at least one atmospheric gas burner
DE10045484.4 2000-09-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2328546A1 (en) * 2007-04-27 2009-11-13 Bsh Electrodomesticos España, S.A. Cooking device i.e. induction cooking device, for hob i.e. induction hob, has protection device provided for limiting air space at cooking zone sub-region in coupled condition of coupling unit in enclosed manner
CN108278638A (en) * 2017-12-21 2018-07-13 浙江苏泊尔家电制造有限公司 The temperature control method of gas-cooker and gas-cooker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313764A1 (en) * 2003-03-27 2004-10-14 Electrolux Schwanden Ag Cooking appliance, in particular an oven, with at least one gas burner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392162A2 (en) * 1989-04-13 1990-10-17 Schott Glaswerke Gas hob comprising at least one radiant gas burner beneath a glass ceramic plate and method for reducing the heating time of such a gas hob
GB2269448A (en) * 1992-08-06 1994-02-09 Pompe Dev Ltd Gas cooker hob control
JPH11351566A (en) * 1998-06-08 1999-12-24 Sun Wave Ind Co Ltd Controller for gas cooking appliance
JP2000002425A (en) * 1998-06-18 2000-01-07 Matsushita Electric Ind Co Ltd Heating cooker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4317040A1 (en) * 1993-05-21 1994-04-28 Schott Glaswerke Glass ceramic hob with temperature display - has alphabetic display of state of hot plate, activated by temperature sensors beneath hot plate
DE19646959C2 (en) * 1996-11-13 1999-08-05 Schott Glas Use of a microswitch, a thermocouple, or a temperature-sensitive resistor in a glass ceramic cooktop, as sensors for indicating the temperature status of a cooking zone which comprises an open, atmospheric gas burner
DE19856538C1 (en) * 1998-12-08 2000-05-04 Schott Glas Glass ceramic stove cooking surface is shrouded by shaped adapter sections of industrial glass to protect the edges and withstand the effects of heavy metal cooking utensils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392162A2 (en) * 1989-04-13 1990-10-17 Schott Glaswerke Gas hob comprising at least one radiant gas burner beneath a glass ceramic plate and method for reducing the heating time of such a gas hob
GB2269448A (en) * 1992-08-06 1994-02-09 Pompe Dev Ltd Gas cooker hob control
JPH11351566A (en) * 1998-06-08 1999-12-24 Sun Wave Ind Co Ltd Controller for gas cooking appliance
JP2000002425A (en) * 1998-06-18 2000-01-07 Matsushita Electric Ind Co Ltd Heating cooker

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03 30 March 2000 (2000-03-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 04 31 August 2000 (2000-08-31) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2328546A1 (en) * 2007-04-27 2009-11-13 Bsh Electrodomesticos España, S.A. Cooking device i.e. induction cooking device, for hob i.e. induction hob, has protection device provided for limiting air space at cooking zone sub-region in coupled condition of coupling unit in enclosed manner
CN108278638A (en) * 2017-12-21 2018-07-13 浙江苏泊尔家电制造有限公司 The temperature control method of gas-cooker and gas-cooker
CN108278638B (en) * 2017-12-21 2020-09-08 浙江苏泊尔家电制造有限公司 Gas stove and temperature control method thereof

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