EP2821708B1 - Ensemble de plaque de cuisson pour cuisinières - Google Patents

Ensemble de plaque de cuisson pour cuisinières Download PDF

Info

Publication number
EP2821708B1
EP2821708B1 EP14171839.5A EP14171839A EP2821708B1 EP 2821708 B1 EP2821708 B1 EP 2821708B1 EP 14171839 A EP14171839 A EP 14171839A EP 2821708 B1 EP2821708 B1 EP 2821708B1
Authority
EP
European Patent Office
Prior art keywords
heating
lid
temperature
heating zone
heating element
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.)
Active
Application number
EP14171839.5A
Other languages
German (de)
English (en)
Other versions
EP2821708A3 (fr
EP2821708A2 (fr
Inventor
Patrick Collins
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.)
AGA Rangemaster Ltd
Original Assignee
AGA Rangemaster Ltd
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 AGA Rangemaster Ltd filed Critical AGA Rangemaster Ltd
Publication of EP2821708A2 publication Critical patent/EP2821708A2/fr
Publication of EP2821708A3 publication Critical patent/EP2821708A3/fr
Application granted granted Critical
Publication of EP2821708B1 publication Critical patent/EP2821708B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
    • 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
    • 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
    • F24C15/12—Side rests; Side plates; Cover lids; Splash guards; Racks outside ovens, e.g. for drying plates

Definitions

  • This invention relates to range cookers, especially heat storage range cookers, and to hob assemblies for use in range cookers or other cooking devices.
  • the combustion chamber is fed with a solid fuel, or, and more commonly nowadays, with fuels such as kerosene, natural gas or propane.
  • a solid fuel or, and more commonly nowadays, with fuels such as kerosene, natural gas or propane.
  • heat from the store passes underneath the top of the cooker on the way toward heating the oven cavities or on a return path to the heat store.
  • the top of the cooker comprises a hob (sometimes called a stovetop or cooktop in some countries, the three terms being interchangeable) that is provided with, typically, two circular cast iron plates.
  • the heat raises the temperature of the underside of the cast iron plates, making the top of the plates heat up due to conduction.
  • the plates can then be used as heating zones to heat pans.
  • Insulated lids are provided which cover the plates when not used for cooking, retaining most of the heat in the plates but allowing some warmth to escape.
  • One of the plates is closer to the heat source than the other and will heat up to a higher temperature suitable for boiling water in a pan, the other heating up to a lower temperature suitable for simmering water in a pan. They are sometimes called the hotplate and simmer plate for this reason.
  • the top of the stove may be insulated from the stored heat and a conventional electric hob may be provided, perhaps using ceramic heating elements.
  • a conventional electric hob may be provided, perhaps using ceramic heating elements.
  • An object of the present invention is to provide an alternative hob assembly for a range cooker that provides the same, or a similar, cooking style as a conventional heat storage range cooker with cast iron hot plates, and which may be used with both heat storage and non-heat storage cookers.
  • the invention provides a hob assembly for a range cooker comprising a base having a heating zone, a heating means comprising at least one electric heating element, a thermally insulated lid which can be moved between a closed position in which it covers the heating zone and permits a controlled amount of heat from the heating zone to escape through the lid and an open position in which it is open to allow a pan to be placed on the heating zone, and a control means for controlling the operation of the heating means when in use, characterised in that during use of the hob assembly when the heating zone is switched on and the insulated lid is closed the control means is adapted to apply a current to the heating means to maintain the temperature at a predefined value suitable for cooking and in the event that the lid is subsequently opened the control means automatically causes more current to be applied to the heating means in order to attempt to maintain the temperature of the heating zone close to the predefined value, and in which the control means includes at least one temperature sensitive switch means which is connected in series between a part of the heating means and a power supply, the temperature sensitive
  • the assembly of the invention provides a heating zone which can be switched on permanently with the lid closed and which will hold the temperature of the zone at a predefined cooking temperature in the same way as a traditional heat storage Aga cooker, and upon opening the lid will automatically maintain the temperature of the heating zone close to the predetermined value by applying more current.
  • a heating zone which can be switched on permanently with the lid closed and which will hold the temperature of the zone at a predefined cooking temperature in the same way as a traditional heat storage Aga cooker, and upon opening the lid will automatically maintain the temperature of the heating zone close to the predetermined value by applying more current.
  • close to the predefined temperature we mean it maintains a temperature that fluctuates around a temperature within, say, 10 degrees, or 20 degrees or 30 degrees.
  • any control system trying to track a target will fluctuate depending on conditions. For example if a cold pan of water is placed on the heating zone the temperature will drop rapidly until the current heating the element brings it back up, and there may be some overshooting and undershooting of the desired temperature. Nevertheless, the invention attempts to maintain the desired temperature automatically.
  • the heating means may comprise a first electric heating element that has a first power rating associated with the heating zone and a second electric heating element having a second power rating associated with the heating zone, the first and second heating elements being selectively connected in parallel to an electrical supply through the control means, and a thermally insulated lid which can be moved between a closed position in which it covers the heating zone and permits a controlled amount of heat from the heating zone to escape through the lid and an open position in which it is open to allow a pan to placed on the heating zone.
  • the heating zone may be raised above the surrounding base, or otherwise demarcated so that it is easy to identity the heating zone. For instance it may be flush with the surrounding base but marked out by being a different colour to the surrounding base or the same colour but marked by a coloured outline. It may be a different material to the surrounding base. It may typically be circular, and may be heated uniformly or substantially uniformly by the first and/or second heating elements. Where it is circular it may have a diameter of between 20cm and 30cm, or up to 40cm.
  • the insulated lid may be fixed to the base or to a part of the range cooker adjacent the base. It may be fixed by a hinge. It may include a handle on the opposite side of the lid to the hinge by which it can be grabbed during opening and closing.
  • the lid may be oversized relative to the heating zone so that the edge of the lid sits outside of the hotspot when it is closed.
  • the edge of the lid may be provided with an insulated, heat resistant, seal, the seal sitting flush with the base or edge of the heating zone when it is closed.
  • the seal may, for instance, comprise a length of insulated rope material.
  • the lid may include a metal outer shell lined with insulating material.
  • the lid may be shaped so that when closed it defines an enclosed volume above the heating zone which is sealed by engagement of an edge part of the lid with a region of the hotplate that surrounds the heating zone. Alternatively, when closed the lid may contact the heating zone over the whole or substantially the whole of the heating zone.
  • the lid when closed may permit heat to escape from the heating zone at substantially the same rate that heat energy is produced by the first heating element.
  • the first heating element can be run continuously at its rated value (or some other predefined power level) with the lid closed and maintain a stable temperature of the heating zone. Indeed it is preferred that enough heat escapes from the lid to allow items such as tea towels to be placed on the closed lid and dried or warmed through.
  • the lid and first heating element may maintain a constant temperature when the heating element is running at its rated output, i.e. when connected directly to a voltage source and can freely draw current from the power supply.
  • the first element is rated at 200 watts and connected to a 230 volt power supply it will draw 200/240 Amps of current.
  • the ratings set out herein after are defined in relation to a power supply of a nominal 230 volts.
  • the first electric heating element may be rated at between 100 watts and 400 watts and the second may be rated at between 1000 watts and 4000 watts. Other ratings could be used.
  • the first heating element comprises 200 watts or 400 watts, and the second element is rated at 2000 watts. It is preferred that the first heating element has a low rating as this will be on constantly when in use, and the more insulation provided in the lid the lower the rating that can be used for a given predefined temperature value.
  • the second element is preferably of a higher rating to allow rapid heating as the heating zone cools following opening of the lid.
  • the first element may comprise two sub-elements, for example two 200 watt sub-elements connected in parallel to give a 400 watt total rating and means for receiving a removable link which permits one or both of the sub-elements to be connected to a supply rail according to the overall rating required from the first heating element, one of the elements being inoperable when the link is removed.
  • the link may, for instance, comprise a brass plate.
  • Each heating element may comprise a resistive element which is located below an upper surface of the heating zone. It may be embedded within a portion of the hob that that forms the upper surface of the heating zone.
  • each heating element may comprise a generally flat plate of ceramic or glass ceramic covering a coil of electrical resistive heating element.
  • the temperature sensitive switch means may comprise a temperature sensing means, such as a thermostat, the set point of the thermostat at which it starts to close being slightly lower than the predefined temperature value.
  • a temperature sensing means such as a thermostat
  • it may comprise a discrete switch, such as a transistor, that is opened and closed under the control of a discrete temperature sensor. This would allow the current to be modulated in a precise manner.
  • the control means may also include an on/off switch which may comprise a rotary knob, a button, a lever or a switch, or a touch sensitive pad or a non-contact switch such as a capacitive switch.
  • the on/off switch may be operated to selectively switch the heating zone on and off as required.
  • the hob assembly may be operable, upon operation of the on/off switch in at least two control modes:
  • the user may select the first or second modes using the on/off switch.
  • the hob assembly may be adapted when switched on and at a steady temperature to pass current through the first heating element but not the second heating element when the temperature is above a threshold temperature, and in the event that the temperature drops below the threshold is adapted to cause current to flow through the second heating element to provide increased heat output from the hot plate, the flow of current being regulated to control the temperature to a preset temperature.
  • This preset temperature may be above the threshold at which the second heating element is switched on.
  • the switch means may connect the first heating element to the supply but not the second, and when below the threshold may selectively connect the second element to the supply.
  • the first element When the second element is connected the first element may remain constantly connected, or may be disconnected from the supply. Because the first element and lid are in thermal equilibrium at the set temperature the first element can be permanently on and does not require any modulation to maintain the predefined temperature value.
  • the assembly may be arranged such that the first element alone is sufficient to hold the temperature above the threshold when the insulated lid is closed and the heating zone is switched on in the second mode, the rating of the first element being chosen so that the temperature drops below the threshold upon opening the lid.
  • the first element With the lid closed the first element may hold the hotspot at a temperature of around 250 degrees Centigrade or 365 degrees Centigrade.
  • The should allow enough heat to escape when closed to prevent the first heating element from burning out if left on for an extended period, say for 24 hours.
  • the rating of the first element, and the amount of power applied to it should be tailored to the amount of heat loss permitted by the lid, yet allow the heating zone to reach the predetermined temperature value at which it is ready for use in cooking. For the avoidance of doubt this temperature could be anywhere in the range of 150 degrees Centigrade to 400 degrees Centigrade or more.
  • the temperature sensor may comprise a thermostat which performs the combined role of sensing temperature and selectively connecting the second heating element to the supply when the temperature drops to or below the threshold, the threshold corresponding to the changeover point of the thermostat.
  • the set point of the thermostat may correspond to a temperature that is just below that which is achieved at the hotspot by continuously passing an unmodulated current from the power supply through the first heating element with no current flowing through the second element while the lid is closed.
  • the temperature at which the control means applies current to the second heating element may be no more than 20 degrees, or 10 degrees, or 5 degrees, below the predefined temperature value. Keeping it close to the equilibrium temperature achieved when the lid closed effectively means that the temperature when the lid is open is kept the same as that when closed within a tolerance range of no more than 20 degrees, or 5 degrees.
  • the power supply comprises a continuous sinusoidal AC signal and is able to allow the heating element to draw power at its rated value.
  • the switch connecting the element to the power supply remains closed, and does not alternate between open and closed states as a function of temperature.
  • the switch needs only move between open and closed position (or vice versa) when the heating zone is switched on or off. This means that the life of the switch will be prolonged compared with a switch that is constantly cycling, such as a thermostatic switch or other temperature controlled switch. This allows the heating zone to be left on with the lid closed for extended periods of time.
  • control circuit may modulate the current flowing through the second heating element when it is in use to maintain the temperature of the hot sport at the set temperature when the lid is open.
  • This modulation may comprise switching the current to the element on and off periodically using a pulse width modulation scheme, which will occur as the thermostat or other temperature controlled switch opens and closes.
  • the second heating element When current is flowing in the second heating element it may also flow in the first heating element.
  • the elements may, in the second mode, be connected in parallel across the power supply, the current flowing in both elements being modulated.
  • the hob assembly may include a position sensor which senses the position of the insulated lid. This may be used to provide a signal causing the control circuit to apply current only to the first element if the lid is closed and to the first and/or second elements if the lid is opened. This may, for example, mean that there is no need to wait for the temperature to drop on opening the lid before the second heating element is brought into use to bring the temperature back up. Heat can be applied the instant the lid is opened rather than waiting for a drop in temperature.
  • the control circuit may be further arranged to cut the power supply to the first heating element in the event that the temperature of the heating zone exceeds a maximum allowable temperature. This will ensure that the heating element does not burn out if there is insufficient heat loss through the closed lid, perhaps if the lid is covered by accident with a highly insulated item, or if there is otherwise a fault in the electrical circuit that might cause overheating.
  • the hob assembly may include a second heating zone, a secondary first electric heating element having a fourth rating associated with the heating zone and a secondary second electric heating element having a fifth rating associated with the heating zone, the fourth rating exceeding the third rating, and an additional insulated lid which can be moved between a closed position in which it covers the heated zone and a second position in which it is open to allow a pan to be placed on the heated zone during cooking.
  • the first and second heating elements of the first and second heating zones may be identical. Where the first element comprises two sub-elements, the first hotspot may have both sub-elements connected together or one of the hotspots may have only one of the sub-elements connected, such that the ratings of the first elements of the two hotspots are different.
  • Each hotspot may have a respective temperature sensing means, and may be controlled by the switch means to allow independent control of the hotspots.
  • the set temperature of each hotspot may be different, one being higher than the other.
  • Each heating zone may be covered by its own lid.
  • the two heating zones and respective lids may be located side by side along the hotplate.
  • a second switch means may also be provided that is operable to control a heating circuit that in use selectively connects the first and second heating elements to an electrical supply.
  • the present invention provides a hot plate assembly for a range cooker which mimics the behaviour of the traditional insulated cast iron hotplate of a range cooker.
  • the hotplates When not in use the hotplates are covered and will provide a gentle heat from the cover yet are ready to use instantly if required as they can be left heated with the lids closed. On opening the lid, additional energy is provided to stop the temperature from dropping rapidly.
  • the invention provides a range style cooker comprising in combination a body including at least one oven cavity and a hob assembly mounted to the body, the hob assembly being in accordance with the first aspect of the invention.
  • the oven cavity may be electrically heated or heated indirectly using heat stored in a heat store. Because the hotplate does not require indirect heating from a heat store, the electrically heated cavity is preferred.
  • the range style cooker may comprise a heat storage cooker comprising a least one oven cavity formed by walls of high thermal mass, such as cast iron.
  • walls of high thermal mass we mean walls which are made of cast iron or similar and are relatively thick so that they retain heat for gradual release over an extended period of time.
  • An example provides a heating element module for use in making a hotplate assembly, the heating element module comprising a heating means and a support which carries the heating means and enables the module to be secured to the underside of a base of the hotplate assembly.
  • the module may be secured to the underside of a glass plate forming the base of the hotplate assembly.
  • a range cooker 1 for domestic use is shown in Figure 1 of the drawings. It comprises a shell comprising front, side, rear and base panels (although only the front is shown) bolted and screwed to a support frame (not shown).
  • the front panel 2 is about 120cm wide in this example, although it may be wider or narrower, and is located above a plinth 3. It can be styled in a variety of different manners depending on whether a traditional or contemporary effect is required, and also can be provided in a range of different colours. It is provided with three openings which are covered by respective hinged insulated doors 4,5 and 6 Each door is provided with a handle (not shown) to enable the door to be opened and closed. Behind each door is an oven cavity (not shown), each one intended to be maintained at a different temperature.
  • the top panel 7 forms a hob, and is inset with two circular hotplates defining respective heating zones 8, 9.
  • Each hot plate is covered by a hinged insulated lid 8a, 9a, not shown in Figure 1 but visible in the open position in Figure 2 .
  • Each lid is fixed to the top panel by a respective hinge 10, 11 and provided with a respective grab handle 12, 13.
  • Figure 1 shows the lids in the lowered position
  • Figure 3 shows the lids raised to expose the heating zones beneath the lids.
  • Each lid comprises a metal or enamel shell that is lined with a highly thermally insulating material.
  • the edge of the lid is provided with a rope seal that contacts the top plate in a region surrounding the hotplate.
  • the lids 8a, 9a retain heat in the heating zones whilst allowing a controlled amount of heat to escape through the lid, and perhaps also between the seal and the top plate.
  • the hotplates are switched on the lids provide sufficient insulation for the heating zone to be held at a constant predefined temperature when a constant level of power is supplied to the heating zone as will be described.
  • the heat loss from the closed lids should therefore be closely matched to the heat input of the heating zone to achieve the desired thermal equilibrium.
  • a first one of the heating zones 8 is provided with two heating elements each comprising resistive coils, a first heating element rated at 400 watts and a second heating element rated at 2000watts.
  • the first heating element actually comprises two sub-elements 14a, 14b of 200 watts each that are connected in parallel by a removable electrically conductive link 16.
  • the second element comprises a single element 15 rated at the 2000 watts, although this again could be made up from multiple sub-elements.
  • This first heating zone defines a Hotspot and the amount of insulation provided by the closed lid ensures the heating zone is held at a predefined temperature of 365 degrees Centigrade when the first element is running at its rated temperature and the second element is switched off.
  • the second heating zone 9 is also provided with three heating elements 17a, 17b and 18, each the same as those of the first heating zone, with one rated at 200 watts, one more at 200 watts and the other at 2000 watts.
  • the second heating zone differs from the first in that no electrical link is provided (the link is removed during installation) so that the first element is made up of only one active 200 watt sub-element 15a with the other sub-element having no part in any heating. This allows an identical unit to be fitted for each of the heating zones during assembly with the two zones having different ratings. Using an identical lid to the first zone, the higher rating of the first element will hold the temperature of this heating zone at a lower temperature of 250 degrees with the lid closed and the first element run at its rated power.
  • the second heating element is connected to the power supply through a respective thermostatic switch.
  • the set point of the thermostat by which we mean the temperature at which it changes from an open to a closed position, is chosen to be approx 20 degrees below the temperature of the heating zone, i.e. 240 degrees and 345 degrees respectively, the difference being considered to be no more than an acceptable tolerance.
  • the arm containing the second heating element and thermostat is connected in parallel with the arm containing the first heating element.
  • the heating elements of the two heating zones 8,9 are connected by an electrical circuit through electrical wires to a power cord, optionally terminated with a plug, which can be connected to a domestic electrical power supply of 230 volts (for the UK and Europe).
  • a control means comprising an on/off switch 16 and a pair of thermostats is provided in the electrical circuit.
  • a user interface panel 19 Located behind a door 11 at the upper left front of the cooker is a user interface panel 19 with the two switches of the electrical circuit. One switch permits the mode of operation of the hob to be set, and the other permits the mode of operation of the ovens to be set.
  • This panel can be seen in Figure 1 of the drawings.
  • the hob control switch can be placed in the following positions: Position 1: All hotplates off; Position 2: One hotplate on; Position 3: The other hotplate on; Position 4: Both hotplates on.
  • the switch may comprise a rotary switch and Figure 6 shows the actual angular position of the rotary switch for each mode.
  • the On/off switch When a hotplate is switched off, the On/off switch is opened and isolates all of the resistive heating elements of that hotplate from the supply voltage so that no current flows in the elements.
  • both of the elements of that hotplate are connected to the supply voltage by the switch and the thermostat which will be closed as it is below its set point temperature.
  • Current then flows through the both of the first and second heating elements at their maximum rated power causing them to heat up the heating zone to a predetermined temperature.
  • both of the sub-elements of the associated first heating element are connected to the supply and so current flows through both elements. This means that the heating zone will be at a higher temperature than the other one when that is switched on, as only one sub-element of that other zone conducts current.
  • the thermostat associated with the heating zone opens and cuts off current from flowing in the second heating element. Current continues to flow unmodulated through the first heating element.
  • the temperature of the heating zone is then set by the rating of the first heating element and the insulating properties of the lid.
  • the amount of insulation provided by the lid and the heat output of the elements is chosen to provide a known predefined temperature value of the two heating zones, the so called hotspot (the higher rated zone) and the simmerspot (the lower rated zone).
  • These temperatures correspond to those achieved by a conventional heat storage range cooker in which heat is applied to the underside of a cast iron hotplate from an energy store.
  • the temperatures are as already stated 365 degrees centigrade and 250 degrees centigrade in this example.
  • the hotplates can be left in this switched on state as long as desired, and a pleasant heat will be radiated from the insulated lids while the hotplates remain ready for instant use. If not needed for longer periods of time they can be switched off.
  • the temperature Upon opening the lid of a heating zone, the temperature will start to drop as the heating elements are no longer insulated by the lid. When it has dropped to the set point of the thermostat, the thermostat will start to close allowing current again to flow in the second heating element of the hotspot.
  • the set point of the thermocouple is selected so that it maintains the temperature of the hotspot at a level slightly below the temperature of the hotspot that is achieved with the lid closed and the hotspot switched on, in this example 20 degrees Centigrade below the predefined temperature value. This ensures that the thermocouple does not cause any current to flow in the higher rated element with the lid closed and that the temperature only drops slightly when the lid is opened, cycling around the set point of the thermostat.
  • the use of the lower rated elements and the higher rated elements enables a constant "ready to use” heat level to be achieved with the lid closed. This is achieved without the need to open and close switches repeatedly to provide a steady temperature by matching the heat output to the heat loss of the lid. Since it is envisaged that the hotspot may be left in this constant on state for extended periods of time, this ensures that there is no switch that could wear out over time, as would be the case if a higher power element was used and has to be regulated when the lid is closed to prevent the temperature of the hot spot reaching an excessive level above that at which it is ready to be used to cook.
  • the use of the higher rated element allows additional heat to be applied when the lid is open, maintaining the temperature at a preset level. This allows a lower power first element to be used with a better insulated lid whilst still raising the hotspot to the cooking temperature when the lid is closed. Of course, if too low a power first element is used it may take too long to reach a ready to use temperature. An acceptable heat up time of less than 1 minute is considered ideal. Because it is of a higher rating it is well suited to achieving the rapid rise in temperature that may be needed after the lid is opened and, perhaps, a cold pan is placed on the hotspot.
  • the hob switch and switch for the ovens could be controlled on a timer circuit, and may be programmable to set one or more times for turning the heating zones and ovens on or off. For instance, it may be arranged to cause the switch to turn both heating zones off in the evening so they do not consume any significant electrical energy overnight, and then to switch them back on (if they were previously on) at a preset time the following morning. They may be controlled remotely by connecting the controller to a wide area network such as the internet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Electric Stoves And Ranges (AREA)
  • Control Of Resistance Heating (AREA)

Claims (14)

  1. Ensemble de plaque de cuisson (7) pour cuisinière comprenant une base comportant une zone de chauffage (8, 9), un moyen de chauffage comprenant au moins un élément chauffant électrique (14a, 14b, 15, 17a, 17b, 18), un couvercle isolé thermiquement (8a, 9a) qui peut être déplacé entre une position fermée dans laquelle il recouvre la zone de chauffage (8, 9) et permet à une quantité régulée de chaleur provenant de la zone de chauffage (8, 9) de s'échapper à travers le couvercle (8a, 9a) et une position ouverte dans laquelle il est ouvert pour permettre à une casserole d'être placée sur la zone de chauffage (8, 9), et un moyen de commande pour commander le fonctionnement du moyen de chauffage lorsqu'il est utilisé, durant l'utilisation de l'ensemble de plaque de cuisson (7) lorsque la zone de chauffage (8, 9) est mise en marche et que le couvercle isolé (8a, 9a) est fermé, ledit moyen de commande étant adapté pour appliquer un courant au moyen de chauffage afin de maintenir la température à une valeur prédéfinie appropriée pour la cuisson et dans le cas où le couvercle (8a, 9a) est ensuite ouvert, ledit moyen de commande entraînant automatiquement l'application d'un courant plus important au moyen de chauffage afin de tenter de maintenir la température de la zone de chauffage (8, 9) proche de la valeur prédéfinie, caractérisé en ce que le moyen de commande comprend au moins un moyen de commutation sensible à la température qui est connecté en série entre une partie du moyen de chauffe et une alimentation électrique, le moyen de commutation sensible à la température étant à l'état non passant lorsque la zone de chauffage (8, 9) est mise en marche et que la température est à la valeur prédéfinie et que le couvercle (8a, 9a) est fermé de sorte que le courant ne passe pas à travers le moyens de commutation sensible à la température, et en réponse à l'ouverture du couvercle (8a, 9a), le moyen de commutation sensible à la température est à l'état passant pour permettre au courant de circuler à partir de l'alimentation électrique vers une partie du moyen de chauffage à travers le moyen de commutation sensible à la température.
  2. Ensemble de plaque de cuisson (7) selon la revendication 1, ledit moyen de commutation sensible à la température comprenant un moyen de détection de température, tel qu'un thermostat, le point de consigne du thermostat auquel il commence à passer à l'état passant étant légèrement inférieur à la valeur de température prédéfinie.
  3. Ensemble de plaque de cuisson (7) selon la revendication 1 ou 2, ledit moyen de chauffage comprenant un premier élément chauffant électrique (14a, 14b, 17a, 17b) présentant une première puissance nominale associée à la zone de chauffage (8, 9) et un second élément chauffant électrique (15, 17) présentant une seconde puissance nominale associée à la zone de chauffage (8, 9), le premier élément chauffant (14a, 14b, 17a, 17b) étant connecté en permanence à l'alimentation électrique lorsque la zone de chauffage (8, 9) est mise en marche afin que le courant traversant le premier élément (14a, 14b, 17a 17b) ne soit pas modulé et le second élément chauffant (15, 18) étant sélectivement connecté à l'alimentation électrique par le moyen de commutation.
  4. Ensemble de plaque de cuisson (7) selon la revendication 3, ladite sortie du premier élément chauffant (14a, 14b, 17a, 17b) lorsqu'il fonctionne à sa puissance nominale étant équilibrée avec la propriété isolante du couvercle (8a, 9a) de sorte qu'avec le couvercle (8a, 9a) fermé, la température d'équilibre thermique à la surface de la zone de chauffage (8, 9) sous le couvercle (8a, 9a) soit sensiblement égale à la température prédéfinie.
  5. Ensemble de plaque de cuisson (7) selon la revendication 3 ou 4, ledit premier élément chauffant électrique (14a, 14b, 17a, 17b) possédant une valeur nominale comprise entre 100 et 300 watts.
  6. Ensemble de plaque de cuisson (7) selon la revendication 3, 4 ou 5, ledit second élément chauffant (15, 18) possédant une valeur nominale plus élevée que le premier élément chauffant (14a, 14b, 17a, 17b).
  7. Ensemble de plaque de cuisson (7) selon la revendication 6, ledit second élément chauffant (15, 18) étant évalué entre 500 et 3000 watts.
  8. Ensemble de plaque de cuisson (7) selon l'une des revendications 3 à 6, ledit premier élément chauffant (14a, 14b, 17a, 17b) comprenant également deux sous-éléments (14a, 14b, 17a, 17b) et un moyen pour recevoir une liaison amovible (16) qui permet à l'un ou aux deux sous-éléments (14a, 14b, 17a, 17b) d'être connectés en parallèle à un rail d'alimentation selon la puissance nominale globale requis du premier élément chauffant (14a, 14b, 17a, 17b).
  9. Ensemble de plaque de cuisson (7) selon l'une quelconque des revendications 3 à 8, chaque élément chauffant (14a, 14b, 15, 17a, 17b, 18) comprenant un élément résistif (14a, 14b, 15, 17a, 17b, 18) qui est situé sous la surface de la zone de chauffage (8, 9).
  10. Ensemble de plaque de cuisson (7) selon l'une quelconque des revendications précédentes, qui comprend en outre une seconde zone de chauffage (9), un second moyen de chauffage associé à la seconde zone de chauffage (9) comprenant au moins un élément chauffant électrique (17a, 17b, 18), un couvercle thermiquement isolé (9a) associé à la seconde zone de chauffage (9) qui peut être déplacé entre une position fermée dans laquelle il recouvre la seconde zone de chauffage (9) et permet à une quantité régulée de chaleur provenant de la seconde zone de chauffage (9) de s'échapper à travers le second couvercle (9a) et une position ouverte dans laquelle il est ouvert pour permettre la mise en place d'une casserole sur la seconde zone de chauffage (9), le moyen de commande étant adapté pour commander le fonctionnement du second moyen de chauffage indépendamment du premier moyen de chauffage, caractérisé en ce que durant l'utilisation de l'ensemble de plaque de cuisson (7) lorsque la seconde zone de chauffage (9) est mise en marche et que le couvercle isolé (9a) est fermé, le moyen de commande est adapté pour appliquer un courant au moyen de chauffage qui élève la température à une valeur prédéfinie pour la cuisson et dans le cas où le couvercle (9a) est ensuite ouvert, le moyen de commande entraîne automatiquement l'application d'un courant plus important au moyen de chauffage afin de maintenir la température de la zone de chauffage (9) à la valeur prédéfinie.
  11. Ensemble de plaque de cuisson (7) selon la revendication 10, lesdits éléments chauffants (14a, 14b, 15, 17a, 17b, 18) de la première zone de chauffage (8) et de la seconde zone de chauffage (9) étant sensiblement identiques.
  12. Installation de cuisson de type cuisinière (1) comprenant en combinaison un corps comprenant au moins une cavité de four et un ensemble de plaque de cuisson (7) monté sur le corps, l'ensemble de plaque de cuisson (7) étant selon l'une quelconque des revendications précédentes.
  13. Installation de cuisson de type cuisinière (1) selon la revendication 12, ladite cavité de four étant directement chauffée ou indirectement chauffée à l'aide de la chaleur stockée dans un réservoir de chaleur.
  14. Ensemble de plaque de cuisson (7) selon l'une quelconque des revendications 1 à 11, comprenant un module d'élément chauffant, le module d'élément chauffant comprenant le moyen de chauffage et un support qui porte le moyen de chauffage et permet au module d'être fixé au dessous d'une base de l'ensemble de plaque chauffante, ledit moyen de chauffage comprenant un premier élément chauffant électrique (16) présentant une première puissance nominale associée à la zone de chauffage et un second élément chauffant électrique (15) présentant une seconde puissance nominale associée à la zone de chauffage, et ledit premier élément chauffant (16) comprenant deux sous-éléments (14a, 14b) et un moyen pour recevoir une liaison amovible (16) qui permet à l'un ou aux deux des sous-éléments (14a, 14b) d'être connectés ensemble en parallèle.
EP14171839.5A 2013-06-10 2014-06-10 Ensemble de plaque de cuisson pour cuisinières Active EP2821708B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1310287.6A GB201310287D0 (en) 2013-06-10 2013-06-10 Hob assembly for range cookers

Publications (3)

Publication Number Publication Date
EP2821708A2 EP2821708A2 (fr) 2015-01-07
EP2821708A3 EP2821708A3 (fr) 2015-05-13
EP2821708B1 true EP2821708B1 (fr) 2020-03-25

Family

ID=48876014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14171839.5A Active EP2821708B1 (fr) 2013-06-10 2014-06-10 Ensemble de plaque de cuisson pour cuisinières

Country Status (2)

Country Link
EP (1) EP2821708B1 (fr)
GB (2) GB201310287D0 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022060308A1 (fr) * 2020-09-17 2022-03-24 Femas Metal San. Ve Tic. A.S. Table de cuisson dotée d'un support de montage de dispositif de commande

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR864048A (fr) * 1939-12-11 1941-04-16 Economiseur de gaz et d'électricité pour fourneaux de cuisine
DE4111848A1 (de) * 1991-04-11 1992-10-15 Lore Scriba Verfahren und vorrichtungen zum garkochen von nahrungsmitteln mit hilfe eines elektro-kuechenherdes
GB2271844B (en) * 1992-10-26 1996-01-17 Gas Group Plc The Cooking hobs
KR101261647B1 (ko) * 2007-03-28 2013-05-06 엘지전자 주식회사 가열조리기기의 제어방법
GB2460408B (en) * 2008-05-28 2010-04-28 Glyn Hughes Cooking equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
GB201310287D0 (en) 2013-07-24
GB201410301D0 (en) 2014-07-23
GB2518480A (en) 2015-03-25
EP2821708A3 (fr) 2015-05-13
GB2518480B (en) 2017-04-19
EP2821708A2 (fr) 2015-01-07

Similar Documents

Publication Publication Date Title
US20090050619A1 (en) Electric oven with multiple broil heaters and method for preheating the electric oven
KR101235163B1 (ko) 전자유도가열방식을 이용한 회전형 국솥
EP2577172B1 (fr) Cuisinière à accumulation de chaleur
FI57335B (fi) Regulator foer elektriska kokplattor
EP1818620A1 (fr) Four avec un chariot de four avec un elément chauffant intégré et de grilles de cuisson
EP2821708B1 (fr) Ensemble de plaque de cuisson pour cuisinières
KR200461130Y1 (ko) 구이용 전열조리 장치
US1208637A (en) Electric cooking apparatus.
EP2963994B1 (fr) Améliorations relatives à des fours électriques
KR20060122142A (ko) 전기 레인지의 발열체 구조물
KR20120073393A (ko) 전기밥솥
KR200238000Y1 (ko) 전기 레인지
KR20060082267A (ko) 보온 서랍을 구비한 오븐 레인지 및 그 제어 방법
ATE274680T1 (de) Austauschbares und versenkbares heizelement für elektrischen herd
JP2000205573A (ja) オ―ブント―スタ―
JP2003135284A (ja) サツマイモ等食品加熱調理保温装置
JPH0795922A (ja) 炊飯器
JPS6334232Y2 (fr)
RU2141605C1 (ru) Электроплита
JPS5920817Y2 (ja) 電気調理器
JPS62167519A (ja) 電気調理器
JPH0664002U (ja) ガス調理器具
JPH0464314A (ja) 炊飯器
GB2337324A (en) Cooker
JPS5923202B2 (ja) 電気調理器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140610

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F24C 15/12 20060101ALI20150409BHEP

Ipc: F24C 7/08 20060101AFI20150409BHEP

R17P Request for examination filed (corrected)

Effective date: 20151113

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180720

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20191016

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AGA RANGEMASTER LIMITED

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1248981

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014062746

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200625

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200625

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200626

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200818

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200725

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1248981

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200325

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602014062746

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

26N No opposition filed

Effective date: 20210112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210101

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20240614

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240513

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240614

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240604

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20240612

Year of fee payment: 11