EP2461105B1 - Cooking appliance - Google Patents
Cooking appliance Download PDFInfo
- Publication number
- EP2461105B1 EP2461105B1 EP10382324.1A EP10382324A EP2461105B1 EP 2461105 B1 EP2461105 B1 EP 2461105B1 EP 10382324 A EP10382324 A EP 10382324A EP 2461105 B1 EP2461105 B1 EP 2461105B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- supply unit
- connection
- actuator
- switches
- 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
Links
- 238000010411 cooking Methods 0.000 title claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 28
- 230000006698 induction Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
Images
Classifications
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- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
- H05B1/0261—For cooking of food
- H05B1/0266—Cooktops
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
Definitions
- This invention relates to cooking appliances, and in particular to cooking appliances comprising a plurality of heat sources with associated actuators, each actuator comprising at least one switch.
- Conventional cooking appliances are connected to an external power supply, generally to a main alternating voltage supply, through which they are powered.
- Said appliances comprise at least one heat source associated to an actuator, generally a manual one, and on which a user acts to activate or deactivate it, generally corresponding with a tap or handle.
- Each actuator also comprises an associated switch, so that when said actuator is operated by a user, it closes or opens an electrical circuit associated to the corresponding switch.
- each actuator comprises an associated switch whose state changes when said actuator is operated, so that the switch has two positions: closed when the actuator is on (when it is being operated), or open when said actuator is off (when it is not being operated).
- US 4634843 A discloses a cooking appliance comprising a plurality of heat sources, and each heat source comprises an associated actuator that is operated by a user to act on it.
- JPS5831689U1 discloses a cooking appliance comprising a plurality of heat sources, each heat source comprising an associated switch, and a connection to an external power supply through which said appliance is powered, and which comprises at least two terminals, each switch being connected in series to the connection so that the appliance does not consume energy from the external power supply unless at least one switch is acted on.
- the cooking appliance of the invention comprises multiple heat sources, actuators associated to the heat sources, which is operated by a user to act on said heat source and which comprises an associated switch whose state changes when said actuator is acted on, and a connection to an external power supply through which said appliance is powered, and which comprises at least two terminals.
- the switch associated to the actuator is connected in series to the connection, at least to one of the terminals of said connection, so that unless the actuator is acted on, the appliance does not consume energy from the external power supply due to the fact that the electrical circuit through which said appliance is connected to said power supply is not closed.
- the appliance of the invention consumes no energy unless the user wishes to switch on a heat source, for which purpose the user acts on the associated actuator, thereby resulting in said appliance not consuming energy if it is not being used.
- no type of supply is required in order to switch on or start the appliance, so that said appliance is switched off, without consuming any energy at all, in a situation in which the appliances in the prior art are on standby and consuming energy.
- the cooking appliance 100 of the invention is used to cook and/or heat food, and comprises heat sources 1, an actuator 2 associated to each heat source 1 and which is operated by a user to act on the corresponding heat source 1 and which comprises at least one associated switch 3 whose state changes when the user acts on said actuator 2, and a connection I to an external power supply through which said appliance 100 is powered, and which comprises at least two terminals T1 and T2.
- FIG 1 partially shows an arrangement of the cooking appliance 100 of the invention, which corresponds by way of example with an appliance 100 that comprises three heat sources 1, comprising three actuators 2 (one for each heat source 1), each actuator 2 preferably corresponding with a tap or handle.
- the user thus acts on an actuator 2 to activate it when he/she wishes to switch on a heat source 1, or to deactivate it when he/she wishes to switch off said heat source 1.
- the heat source 1 of the appliance 100 may be of gas, electrical, of the induction type, or, when there is more than one heat source 1, said heat sources 1 may also be a combination of the three types mentioned, for example.
- the rest of the figures in the application represent an appliance 100 with three heat sources 1, such as the one shown in Figure 1 .
- the switch 3 associated to the actuator 2 is connected in series with at least one of the switches T1 or T2 of the connection I, so that the appliance 100 does not consume energy from the external power supply unless the actuator 2 is acted on. As a result, the appliance 100 does not consume any energy unless a user acts on it, thereby preventing said appliance from consuming energy on standby.
- the appliance 100 comprises a supply unit 5 adapted to adapt the voltage it receives from the external power supply through the connection l to all the voltages necessary in the appliance 100, such as continuous voltages such as 3.3V, 5V or 12V, and at the necessary power levels.
- the external power supply corresponds with the main alternating voltage supply, said connection l acting as a socket, although it may also be another type of external power supply, such as a continuous voltage supply.
- the appliance 100 comprises a plurality of heat sources 1, each heat source 1 comprising associated actuators 2 that is operated by a user to act on the corresponding heat source 1 and which, in a first embodiment shown in Figures 2 to 5 and in a second embodiment shown in Figures 6 to 8 , comprises a single associated switch 3 whose state changes when the user acts on said actuator 2.
- the appliance 100 also comprises a control unit 4 adapted, when at least one of the actuators 2 has been operated on, to detect a change of state of the switches 3 and to identify which actuator 2 (or which actuators 2) have been operated on in accordance with the state of said switches 3, said switches 3 being associated to said control unit 4.
- each switch 3 associated to an actuator 2 is connected to the connection I, to a terminal T1 of said connection I, and a second end of each switch 3 is connected to the control unit 4.
- the control unit 4 which preferably corresponds with a microprocessor, a microcontroller or an equivalent device, is supplied by a continuous voltage (generally in the region of 5V, although it may also be in the region of 3.3V, for example), preferably generated by the supply unit 5, and does not support alternating voltages.
- said appliance 100 when the appliance 100 is adapted to be connected to an external power supply that corresponds with an alternating power supply, said appliance 100 comprises an adaptor 6 for each switch 3, which adapts the alternating voltage to a continuous voltage acceptable to the control unit 4, the second end of each switch 3 being connected to said control unit 4 by means of a respective adaptor 6.
- the adaptor 6 preferably corresponds with a conventional optocoupler that comprises a diode on the side of the switch 3 and a transistor on the side of the control unit 4, the collector of which is connected to said control unit 4 and the emitter of which is connected to ground M.
- the supply unit 5 is connected to a terminal T1 of the connection l through the switches 3, which are disposed in parallel to each other.
- each switch 3 is connected to the terminal T1 at a first end and to the supply unit 5 and to the control unit 4 at a second end.
- the supply unit 5 is not reached by the supply originating from the connection I unless one of the actuators 2 is acted on, which causes the corresponding switch 3 to close, the appliance 100 not being powered until this time.
- Said appliance 100 thus consumes no energy while it is not being acted on (on an actuator 2), thereby preventing said appliance 100 from consuming on standby.
- the appliance 100 is switched off from the external power supply, so that it does not consume energy from said external power supply.
- the corresponding switch 3 closes so that the terminal T1 also remains connected to that supply unit 5, which is being supplied, said supply unit 5 supplying the rest of the appliance 100.
- the supply unit 5 corresponds with an internal power supply of the appliance 100, that is not shown as it is widely used and is not the object of the invention, a known conventional power supply being capable of being used.
- the supply unit 5 is connected directly to the other terminal T2 of the connection l.
- the appliance 100 also comprises a blocking member 8 through which the terminal T1 of the connection l connected to the switch 3 is connected to the supply unit 5, a terminal T1 thereby being connected to said supply unit 5 through the blocking member 8 and the other terminal T2 of the connection l directly.
- the blocking member 8 is connected to the second ends of the switches 3, and attaches said second ends to each other with the result that the voltage in the second end of each switch 3 depends on the state of the switch 3, in other words, the blocking member 8 is capable of carrying the same voltage to the supply unit 5 at the same time as it maintains the independence of each of the second ends of the different switches 3.
- control unit 4 can determine which actuator 2 is active and which one is not as it receives one signal or another corresponding to each switch 3 depending on whether said switch 3 has been operated or not. If no blocking member 8 is used, when at least one actuator 2 is activated the second ends of all the switches 3 are connected and the control unit 4 is not capable of identifying which actuator 2 is active and which is not.
- the blocking member 8 comprises a rectifier 7 associated to each switch 3, said rectifier 7 being connected at a first end to the second end of the corresponding switch 3 and the second end of the different rectifiers 7 being connected to each other, said second ends of said rectifiers 7 also being connected to the supply unit 5.
- each rectifier 7 corresponds with a diode, the anodes of said diodes being connected to the second end of the corresponding switch 3 and the cathodes of said diodes being connected to each other and to the supply unit 5.
- the supply unit 5 (the power supply) does not require a rectifier stage as this would be provided by the blocking member 8.
- the collector is thus connected to ground M and the control unit 4 interprets a 0 logic, determining that the corresponding actuator 2 is activated. If an actuator 2 is not activated, the collector is not connected to ground M and the control unit 4 interprets a 1 logic, determining that said actuator 2 is not active (the collector can comprise a pull-up for example, internal or external to the control unit 4, thereby enabling said control unit to interpret a 1 logic when the actuator 2 is deactivated).
- the appliance 100 differs from the first embodiment in that the supply unit 5 is not connected directly to any of the terminals T1 and T2 of the connection l.
- said appliance 100 comprises a complete blocking member 8' through which both terminals T1 and T2 are connected to the supply unit 5.
- the complete blocking member 8' is connected at one side to the second ends of the switches 3 and to the terminal T2 that is not associated to said switches 3 (the inputs of said complete blocking member 8'), and to the supply unit 5 at the other side (the output of said complete blocking member 8'), said complete locking member 8' associating said second ends to each other so that the voltage in each second end depends on the state of the corresponding switch 3. If no complete blocking member 8' is used, when at least one actuator 2 is activated the second ends of all the switches 3 are connected and the control unit 4 is not capable of identifying which actuator 2 is active and which is not.
- the complete blocking member 8' comprises a full-wave rectifier 7', said rectifier 7' being composed of a diode branch 70' for each switch 3 and an additional diode branch 71' for the terminal T2 that is not connected or associated to said switches 3, each diode branch 70' and 71' comprising two diodes connected in series, the switch 3 and the terminal T2 being connected between the two diodes of the corresponding diode branch 70' and 71'.
- the supply unit 5 (the power supply) does not require a rectifier stage as that is provided by the locking member 8'.
- the appliance 100 can also comprise a feedback unit 10; 10' adapted to carry the terminal T1 connected to the switches 3 to the supply unit 5, when the last actuator 2 is no longer acted on, the control unit 4 thereby being capable of being powered to perform the function of indicating that a heat source 1 remains hot, for example, by means of an indicator 9 associated to each heat source 1.
- a feedback unit 10; 10' such as the one proposed in the appliance 100, all the heat sources 1 would switch off when all the actuators 2 are deactivated, and the appliance 100, and therefore the control unit 4, would no longer be powered and would thereby, by way of example, be incapable of performing the aforementioned function.
- the function of said feedback unit 10; 10' is to enable said control unit 4 to continue being supplied for at least a specific time period sufficient to allow any heat source 1 to cool to a temperature that is not dangerous to users, or for the specific time period sufficient to carry out any other requisite temporary function, said terminal T1 remaining connected to the supply unit 5 for said preset time period.
- the control unit 4 causes said feedback unit 10; 10' to stop connecting the terminal T1 to the supply unit 5, the appliance 100 no longer being supplied as a result.
- the feedback unit 10 preferably corresponds with an opto-thyristor, as shown in Figure 5 , comprising a diode on the side of the control unit 4 and a thyristor on the other side.
- the anode of the diode is connected to the control unit 4 and the cathode to ground M, and said control unit 4 strikes said diode when the first actuator 2 is activated, keeping it struck the whole time (by "struck” it should be understood that a current is caused to pass through it).
- the anode of the thyristor is connected directly to the terminal T1 to which the switches 3 are also connected, while the cathode of said thyristor is connected to the supply unit 5.
- the supply unit 5 when the diode is primed the supply unit 5 is connected to the terminal T1 also through the feedback unit 10, and if all the actuators 2 are deactivated the supply unit 5 continues to be connected to both terminals T1 and T2, the control unit 4 thereby continuing to be supplied and continuing to be capable of priming said diode of the feedback unit 10 for the preset time.
- the feedback unit 10' preferably corresponds with an opto-triac, as shown in Figure 8 , comprising a diode on the side of the control unit 4 and a triac on the other side.
- the anode of the diode is connected to the control unit 4 and the cathode to ground M, and said control unit 4 strikes said diode when the first actuator 2 is activated, keeping it struck the whole time (by "struck” it should be understood that a current is caused to pass through it).
- One side of the triac is connected directly to the terminal T1 of the connection l to which the switches 3 are also connected, while the other side of said triac is connected to a diode branch 11 that is connected to the supply unit 5, in parallel with the diode branches 70' and 71' of the complete blocking member 8'.
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Food Science & Technology (AREA)
- Relay Circuits (AREA)
- Electric Stoves And Ranges (AREA)
Description
- This invention relates to cooking appliances, and in particular to cooking appliances comprising a plurality of heat sources with associated actuators, each actuator comprising at least one switch.
- Conventional cooking appliances are connected to an external power supply, generally to a main alternating voltage supply, through which they are powered. Said appliances comprise at least one heat source associated to an actuator, generally a manual one, and on which a user acts to activate or deactivate it, generally corresponding with a tap or handle. Each actuator also comprises an associated switch, so that when said actuator is operated by a user, it closes or opens an electrical circuit associated to the corresponding switch.
- Document
WO 2009040115 A2 discloses a cooking appliance of this type, in which each actuator comprises an associated switch whose state changes when said actuator is operated, so that the switch has two positions: closed when the actuator is on (when it is being operated), or open when said actuator is off (when it is not being operated). -
US 4634843 A discloses a cooking appliance comprising a plurality of heat sources, and each heat source comprises an associated actuator that is operated by a user to act on it. -
JPS5831689U1 - It is an object of the invention to provide a cooking appliance as described in the claims.
- The cooking appliance of the invention comprises multiple heat sources, actuators associated to the heat sources, which is operated by a user to act on said heat source and which comprises an associated switch whose state changes when said actuator is acted on, and a connection to an external power supply through which said appliance is powered, and which comprises at least two terminals.
- The switch associated to the actuator is connected in series to the connection, at least to one of the terminals of said connection, so that unless the actuator is acted on, the appliance does not consume energy from the external power supply due to the fact that the electrical circuit through which said appliance is connected to said power supply is not closed.
- As a result, the appliance of the invention consumes no energy unless the user wishes to switch on a heat source, for which purpose the user acts on the associated actuator, thereby resulting in said appliance not consuming energy if it is not being used. In addition, no type of supply is required in order to switch on or start the appliance, so that said appliance is switched off, without consuming any energy at all, in a situation in which the appliances in the prior art are on standby and consuming energy.
- These and other advantages and characteristics of the invention will be made evident in the light of the drawings and the detailed description thereof.
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Figure 1 partially shows an arrangement of the appliance of the invention. -
Figure 2 schematically shows switches, blocking members, adaptors, a supply unit and a control unit of a first embodiment of the appliance ofFigure 1 . -
Figure 3 shows the optocouplers comprised by the adaptors ofFigure 2 . -
Figure 4 shows the rectifiers comprised by the blocking members ofFigure 2 . -
Figure 5 shows a feedback unit for the first embodiment of the appliance ofFigure 1 . -
Figure 6 schematically shows switches, a complete blocking member, adaptors, a supply unit and a control unit of a second embodiment of the appliance ofFigure 1 . -
Figure 7 shows the rectifier comprised by the complete blocking member ofFigure 6 . -
Figure 8 shows a feedback unit for the second embodiment of the appliance ofFigure 1 . - The
cooking appliance 100 of the invention is used to cook and/or heat food, and comprisesheat sources 1, anactuator 2 associated to eachheat source 1 and which is operated by a user to act on thecorresponding heat source 1 and which comprises at least one associatedswitch 3 whose state changes when the user acts on saidactuator 2, and a connection I to an external power supply through which saidappliance 100 is powered, and which comprises at least two terminals T1 and T2. -
Figure 1 partially shows an arrangement of thecooking appliance 100 of the invention, which corresponds by way of example with anappliance 100 that comprises threeheat sources 1, comprising three actuators 2 (one for each heat source 1), eachactuator 2 preferably corresponding with a tap or handle. The user thus acts on anactuator 2 to activate it when he/she wishes to switch on aheat source 1, or to deactivate it when he/she wishes to switch off saidheat source 1. Theheat source 1 of theappliance 100 may be of gas, electrical, of the induction type, or, when there is more than oneheat source 1, saidheat sources 1 may also be a combination of the three types mentioned, for example. For the purposes of coherence and clarity, the rest of the figures in the application represent anappliance 100 with threeheat sources 1, such as the one shown inFigure 1 . - The
switch 3 associated to theactuator 2 is connected in series with at least one of the switches T1 or T2 of the connection I, so that theappliance 100 does not consume energy from the external power supply unless theactuator 2 is acted on. As a result, theappliance 100 does not consume any energy unless a user acts on it, thereby preventing said appliance from consuming energy on standby. - Preferably, as shown in
Figures 2 to 9 , theappliance 100 comprises asupply unit 5 adapted to adapt the voltage it receives from the external power supply through the connection l to all the voltages necessary in theappliance 100, such as continuous voltages such as 3.3V, 5V or 12V, and at the necessary power levels. Preferably, the external power supply corresponds with the main alternating voltage supply, said connection l acting as a socket, although it may also be another type of external power supply, such as a continuous voltage supply. - The
appliance 100 comprises a plurality ofheat sources 1, eachheat source 1 comprisingassociated actuators 2 that is operated by a user to act on thecorresponding heat source 1 and which, in a first embodiment shown inFigures 2 to 5 and in a second embodiment shown inFigures 6 to 8 , comprises a single associatedswitch 3 whose state changes when the user acts on saidactuator 2. - The
appliance 100 also comprises acontrol unit 4 adapted, when at least one of theactuators 2 has been operated on, to detect a change of state of theswitches 3 and to identify which actuator 2 (or which actuators 2) have been operated on in accordance with the state of saidswitches 3, saidswitches 3 being associated to saidcontrol unit 4. - In the first two embodiments, a first end of each
switch 3 associated to anactuator 2 is connected to the connection I, to a terminal T1 of said connection I, and a second end of eachswitch 3 is connected to thecontrol unit 4. Thecontrol unit 4, which preferably corresponds with a microprocessor, a microcontroller or an equivalent device, is supplied by a continuous voltage (generally in the region of 5V, although it may also be in the region of 3.3V, for example), preferably generated by thesupply unit 5, and does not support alternating voltages. Thus, when theappliance 100 is adapted to be connected to an external power supply that corresponds with an alternating power supply, saidappliance 100 comprises anadaptor 6 for eachswitch 3, which adapts the alternating voltage to a continuous voltage acceptable to thecontrol unit 4, the second end of eachswitch 3 being connected to saidcontrol unit 4 by means of arespective adaptor 6. In the first embodiment of the invention, which corresponds with the preferred embodiment, and in the second embodiment, theadaptor 6 preferably corresponds with a conventional optocoupler that comprises a diode on the side of theswitch 3 and a transistor on the side of thecontrol unit 4, the collector of which is connected to saidcontrol unit 4 and the emitter of which is connected to ground M. - In the first and second embodiments the
supply unit 5 is connected to a terminal T1 of the connection l through theswitches 3, which are disposed in parallel to each other. As a result, eachswitch 3 is connected to the terminal T1 at a first end and to thesupply unit 5 and to thecontrol unit 4 at a second end. As a result, thesupply unit 5 is not reached by the supply originating from the connection I unless one of theactuators 2 is acted on, which causes thecorresponding switch 3 to close, theappliance 100 not being powered until this time. Saidappliance 100 thus consumes no energy while it is not being acted on (on an actuator 2), thereby preventing saidappliance 100 from consuming on standby. In short, if noactuator 2 is acted on all the associatedswitches 3 are open and theappliance 100 is switched off from the external power supply, so that it does not consume energy from said external power supply. When a user acts on anactuator 2, thecorresponding switch 3 closes so that the terminal T1 also remains connected to thatsupply unit 5, which is being supplied, saidsupply unit 5 supplying the rest of theappliance 100. Thesupply unit 5 corresponds with an internal power supply of theappliance 100, that is not shown as it is widely used and is not the object of the invention, a known conventional power supply being capable of being used. - In the first embodiment, the
supply unit 5 is connected directly to the other terminal T2 of the connection l. Theappliance 100 also comprises ablocking member 8 through which the terminal T1 of the connection l connected to theswitch 3 is connected to thesupply unit 5, a terminal T1 thereby being connected to saidsupply unit 5 through theblocking member 8 and the other terminal T2 of the connection l directly. The blockingmember 8 is connected to the second ends of theswitches 3, and attaches said second ends to each other with the result that the voltage in the second end of eachswitch 3 depends on the state of theswitch 3, in other words, the blockingmember 8 is capable of carrying the same voltage to thesupply unit 5 at the same time as it maintains the independence of each of the second ends of thedifferent switches 3. As a result, thecontrol unit 4 can determine whichactuator 2 is active and which one is not as it receives one signal or another corresponding to eachswitch 3 depending on whether saidswitch 3 has been operated or not. If noblocking member 8 is used, when at least oneactuator 2 is activated the second ends of all theswitches 3 are connected and thecontrol unit 4 is not capable of identifying whichactuator 2 is active and which is not. - In the first embodiment, as shown by way of example in
Figure 4 , the blockingmember 8 comprises arectifier 7 associated to eachswitch 3, saidrectifier 7 being connected at a first end to the second end of thecorresponding switch 3 and the second end of thedifferent rectifiers 7 being connected to each other, said second ends of saidrectifiers 7 also being connected to thesupply unit 5. In said first embodiment eachrectifier 7 corresponds with a diode, the anodes of said diodes being connected to the second end of thecorresponding switch 3 and the cathodes of said diodes being connected to each other and to thesupply unit 5. In this case, the supply unit 5 (the power supply) does not require a rectifier stage as this would be provided by the blockingmember 8. - An explanation of an example of identification in the first embodiment of the invention is provided below. If no
actuator 2 has been operated on, in other words, if all theactuators 2 are deactivated, theappliance 100 is, in practical purposes, switched off and does not consume energy. When anactuator 2 is activated thecorresponding switch 3 is closed and supply reaches thesupply unit 5, which generates the supplies or voltages necessary for the rest of theappliance 100, saidappliance 100 being powered. Thecontrol unit 4 is thus supplied, so that saidcontrol unit 4 is capable of determining whichactuators 2 are active and which are not. When anactuator 2 is active its associatedswitch 3 is closed, so that a specific current passes through the diode of the optocoupler, which causes a current between the collector and the emitter of the transistor of said optocoupler. The collector is thus connected to ground M and thecontrol unit 4 interprets a 0 logic, determining that thecorresponding actuator 2 is activated. If anactuator 2 is not activated, the collector is not connected to ground M and thecontrol unit 4 interprets a 1 logic, determining that saidactuator 2 is not active (the collector can comprise a pull-up for example, internal or external to thecontrol unit 4, thereby enabling said control unit to interpret a 1 logic when theactuator 2 is deactivated). - In the second embodiment, the
appliance 100 differs from the first embodiment in that thesupply unit 5 is not connected directly to any of the terminals T1 and T2 of the connection l. In said second embodiment, saidappliance 100 comprises a complete blocking member 8' through which both terminals T1 and T2 are connected to thesupply unit 5. The complete blocking member 8' is connected at one side to the second ends of theswitches 3 and to the terminal T2 that is not associated to said switches 3 (the inputs of said complete blocking member 8'), and to thesupply unit 5 at the other side (the output of said complete blocking member 8'), said complete locking member 8' associating said second ends to each other so that the voltage in each second end depends on the state of thecorresponding switch 3. If no complete blocking member 8' is used, when at least oneactuator 2 is activated the second ends of all theswitches 3 are connected and thecontrol unit 4 is not capable of identifying whichactuator 2 is active and which is not. - The complete blocking member 8' comprises a full-wave rectifier 7', said rectifier 7' being composed of a diode branch 70' for each
switch 3 and an additional diode branch 71' for the terminal T2 that is not connected or associated to saidswitches 3, each diode branch 70' and 71' comprising two diodes connected in series, theswitch 3 and the terminal T2 being connected between the two diodes of the corresponding diode branch 70' and 71'. As in the first embodiment, in this case the supply unit 5 (the power supply) does not require a rectifier stage as that is provided by the locking member 8'. - In the first and second embodiments the
appliance 100 can also comprise afeedback unit 10; 10' adapted to carry the terminal T1 connected to theswitches 3 to thesupply unit 5, when thelast actuator 2 is no longer acted on, thecontrol unit 4 thereby being capable of being powered to perform the function of indicating that aheat source 1 remains hot, for example, by means of anindicator 9 associated to eachheat source 1. Without afeedback unit 10; 10' such as the one proposed in theappliance 100, all theheat sources 1 would switch off when all theactuators 2 are deactivated, and theappliance 100, and therefore thecontrol unit 4, would no longer be powered and would thereby, by way of example, be incapable of performing the aforementioned function. As a result, the function of saidfeedback unit 10; 10' is to enable saidcontrol unit 4 to continue being supplied for at least a specific time period sufficient to allow anyheat source 1 to cool to a temperature that is not dangerous to users, or for the specific time period sufficient to carry out any other requisite temporary function, said terminal T1 remaining connected to thesupply unit 5 for said preset time period. At the end of said preset time, which begins when thecontrol unit 4 detects that thelast actuator 2 that was active has been deactivated, thecontrol unit 4 causes saidfeedback unit 10; 10' to stop connecting the terminal T1 to thesupply unit 5, theappliance 100 no longer being supplied as a result. - In the first embodiment (the preferred embodiment), the
feedback unit 10 preferably corresponds with an opto-thyristor, as shown inFigure 5 , comprising a diode on the side of thecontrol unit 4 and a thyristor on the other side. The anode of the diode is connected to thecontrol unit 4 and the cathode to ground M, and saidcontrol unit 4 strikes said diode when thefirst actuator 2 is activated, keeping it struck the whole time (by "struck" it should be understood that a current is caused to pass through it). The anode of the thyristor is connected directly to the terminal T1 to which theswitches 3 are also connected, while the cathode of said thyristor is connected to thesupply unit 5. As a result, when the diode is primed thesupply unit 5 is connected to the terminal T1 also through thefeedback unit 10, and if all theactuators 2 are deactivated thesupply unit 5 continues to be connected to both terminals T1 and T2, thecontrol unit 4 thereby continuing to be supplied and continuing to be capable of priming said diode of thefeedback unit 10 for the preset time. - In the second embodiment, the feedback unit 10' preferably corresponds with an opto-triac, as shown in
Figure 8 , comprising a diode on the side of thecontrol unit 4 and a triac on the other side. The anode of the diode is connected to thecontrol unit 4 and the cathode to ground M, and saidcontrol unit 4 strikes said diode when thefirst actuator 2 is activated, keeping it struck the whole time (by "struck" it should be understood that a current is caused to pass through it). One side of the triac is connected directly to the terminal T1 of the connection l to which theswitches 3 are also connected, while the other side of said triac is connected to adiode branch 11 that is connected to thesupply unit 5, in parallel with the diode branches 70' and 71' of the complete blocking member 8'. As a result, when the diode is struck thesupply unit 5 is connected to the terminal T1 also through thefeedback unit 10, and if all theactuators 2 are deactivated thesupply unit 5 continues to be connected to both terminals T1 and T2, thecontrol unit 4 thereby continuing to be supplied and continuing to be capable of striking said diode of thefeedback unit 10 for the preset time.
Claims (9)
- Cooking appliance comprising- a plurality of heat sources (1),- an actuator (2) associated to each heat source (1), which is operated by a user to act on the corresponding heat source (1),- switches (3), one switch (3) associated to each actuator (2), whose state changes when the user acts on the corresponding actuator (2),- a connection (I) to an external power supply, said power supply being an alternating voltage supply, through which said appliance (100) is powered, and which comprises two terminals (T1, T2), and- a control unit (4) adapted, when at least one of said actuators (2) has been operated on, to detect a change of state of the switches (3) and to identify which actuator (2) has been operated on in accordance with said switches (3), a first end of each switch (3) being connected to the connection (I) and a second end of each switch (3) being connected to said control unit (4),the second end of each switch (3) being connected to the control unit (4) by means of a respective adaptor (6), so that each adaptor (6), when the corresponding actuator (2) has been operated on, adapts the alternating voltage present in the second end of the corresponding switch (3) to an acceptable voltage for said control unit (4),
each switch (3) being connected in series to the connection (I), so that the appliance (100) does not consume energy from the external power supply unless at least one actuator (2) is acted on,
characterised in that
it comprises a supply unit (5) adapted to adapt the voltage present in the connection (l) to all the voltages necessary in the appliance (100),
the cooking appliance (100) also comprising, either- a blocking member (8) for each switch (3), the first end of each switch (3) being connected to one of the terminals (T1) of the connection (I) and the second end of each switch (3) being connected to the respective blocking member (8), each blocking member (8) being connected to the supply unit (5), the blocking members (8) carrying the same voltage to the supply unit (5) at the same time as they maintain the independence of each of the second ends of the different switches (3), the other terminal (T2) of the connection (I) being connected directly to the supply unit (5); or- a complete blocking member (8'), the first end of each switch (3) being connected to one of the terminals (T1) of the connection (I) and the second end of each switch (3) being connected to a respective input of the complete blocking member (8'), the other terminal (T2) of the connection (I) that is not associated to said switches (3) being also connected to a respective input of said complete blocking member (8'), the complete blocking member (8') comprising two outputs connected to the supply unit (5) through which both terminals (T1, T2) of the connection (I) are connected to said supply unit (5). - Cooking appliance according to claim 1, wherein the adaptor (6) is an optocoupler.
- Cooking appliance according to claim 1 or 2, wherein each blocking member (8) comprises a rectifier (7) associated to the corresponding switch (3), said rectifier (7) being connected at a first end to the second end of the switch (3) and a second end of the different rectifiers (7) being connected to each other, said second ends of said rectifiers (7) being connected to the supply unit (5).
- Cooking appliance according to claim 3, wherein each rectifier (7) corresponds with a diode, the anodes of said diodes being connected to the second end of the corresponding switch (3) and the cathodes of said diodes being connected to each other and to the supply unit (5).
- Cooking appliance according to any of the preceding claims, comprising a feedback unit (10) adapted to connect the terminal (T1) of the connection (I) connected to the switches (3) to the supply unit (5), when the last actuator (2) is no longer activated.
- Cooking appliance according to claim 5, wherein the feedback unit (10) comprises an opto-thyristor, one diode of said opto-thyristor being powered by the supply unit (5) and the thyristor of said opto-thyristor being connected to the terminal (T1) connected to the switches (3) by the anode and connected to the supply unit (5) by the cathode.
- Cooking appliance according to claim 1 or 2, wherein the complete blocking member (8') comprises a full-wave rectifier (7'), said rectifier (7') being composed of a diode branch (70') for each switch (3) and an additional diode branch (71') for the terminal (T2) of the connection (I) that is not connected or associated to said switches (3), each diode branch (70', 71') comprising two diodes connected in series and the corresponding switch (3) and terminal (T2) being connected between the two diodes of the corresponding diode branch (70', 71').
- Cooking appliance according to claim 7, comprising a feedback unit (10') adapted to connect the terminal (T1) of the connection (I) connected to the switches (3) to the supply unit (5), when the last actuator (2) is no longer activated.
- Cooking appliance according to claim 8, wherein the feedback unit (10') comprises an opto-triac, a diode of said opto-triac being powered by the supply unit (5) and the triac of said opto-triac connected to the terminal (T1) being connected to the switches (3) at one end and connected to the supply unit (5) at the other end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10382324.1A EP2461105B1 (en) | 2010-12-01 | 2010-12-01 | Cooking appliance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10382324.1A EP2461105B1 (en) | 2010-12-01 | 2010-12-01 | Cooking appliance |
Publications (2)
Publication Number | Publication Date |
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EP2461105A1 EP2461105A1 (en) | 2012-06-06 |
EP2461105B1 true EP2461105B1 (en) | 2016-06-29 |
Family
ID=43650711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP10382324.1A Active EP2461105B1 (en) | 2010-12-01 | 2010-12-01 | Cooking appliance |
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Country | Link |
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EP (1) | EP2461105B1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5831689U (en) * | 1981-08-27 | 1983-03-01 | 株式会社日立ホームテック | Electric heater control device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5652890A (en) * | 1979-10-01 | 1981-05-12 | Sony Corp | Electromagnetic induction heating cooking device |
US4634843A (en) * | 1986-01-16 | 1987-01-06 | General Electric Company | Dual mode power control arrangement for cooking appliance |
JPH0793180B2 (en) * | 1989-12-12 | 1995-10-09 | リンナイ株式会社 | Heater control circuit |
ES2325197B1 (en) | 2007-09-28 | 2010-06-04 | Coprecitec, S.L. | "GAS KITCHEN APPLIANCE WITH FLAME POWER REGULATION". |
-
2010
- 2010-12-01 EP EP10382324.1A patent/EP2461105B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5831689U (en) * | 1981-08-27 | 1983-03-01 | 株式会社日立ホームテック | Electric heater control device |
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EP2461105A1 (en) | 2012-06-06 |
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