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Device including a casing formed by non-conducting material fastenable to the household appliance, electrical supply means and a lighting circuit carried by the casing, and a spark plug fastenable to the household appliance in proximity of burner means carried by the household appliance so as to be

Device including a casing formed by non-conducting material fastenable to the household appliance, electrical supply means and a lighting circuit carried by the casing, and a spark plug fastenable to the household appliance in proximity of burner means carried by the household appliance so as to be electrically connected to earth; the lighting circuit being adapted to supply a high voltage alternating current to said spark plug to make it generate a spark adapted to produce the lighting of a flame following the feeding of a combustible gas flow to the burner means; wherein the supply means are direct current low voltage generator means carried by and accommodated in the casing and supply in parallel said lighting circuit, through ac/dc transformer means, and a control circuit, through electrical disconnection means from the lighting circuit, the control circuit being electrically connected to the spark plug and to a first terminal of a LED indicator fastenable in use to the household appliance and having a second terminal connected to earth, for selectively producing the turning on or off of the LED indicator in consequence of a passage or interruption of a dispersion current to earth which flows in use to the spark plug when the flame is lit.

대표청구항 ▼

1. A device for lighting and controlling a burner in a household appliance, the device comprising: an electrical supply unit;a lighting circuit;a casing made of non-conducting material and fastenable in use to the household appliance, said casing carrying said electrical supply unit and said lightin

1. A device for lighting and controlling a burner in a household appliance, the device comprising: an electrical supply unit;a lighting circuit;a casing made of non-conducting material and fastenable in use to the household appliance, said casing carrying said electrical supply unit and said lighting circuit;at least one spark plug electrically connected to said lighting circuit and fastenable to the household appliance in proximity of a burner unit carried by the household appliance so as to be electrically connected to a reference potential, the spark plug being adapted to generate a spark between itself and the burner unit to ignite a flame when said lighting circuit is powered by a high voltage alternating current consequent to a feeding of a flow of combustible gas to said burner unit;a light indicator; anda control circuit electrically connected to said spark plug and the light indicator, the light indicator fastenable in use to the household appliance, whereinthe control circuit is adapted to selectively turn said light indicator on or off based on a dispersion current flowing through the spark plug to the reference potential when the burner unit is lit, the dispersion current being in an order of a few microamperes,said electrical supply unit is a direct current low voltage generator unit accommodated in the casing, andsaid electrical supply unit is adapted to supply power, in parallel, to said lighting circuit through a dc/ac transformer unit and to said control circuit through an electrical disconnection unit. 2. The device according to claim 1, wherein said lighting circuit, control circuit and electrical supply unit are in use electrically connected together through respective contacts carried by said casing and electrically connectable in use to opposite terminals of a switch, andthe switch is controlled by a hydraulic feeding unit to control said flow of combustible gas to said burner unit. 3. The device according to claim 1, wherein said light indicator is a LED indicator having a first power terminal connected to said control circuit and a second power terminal, in use, connected to ground through said household appliance. 4. The device according to claim 1, wherein said lighting circuit comprises a button switch arranged between said dc/ac transformer unit and a booster coil unit, the button switch being fastenable in use onto the household appliance. 5. The device according to claim 1, wherein said lighting circuit comprises an electronic switching unit electrically connected in series between said dc/ac transformer unit and booster coil unit;carried inside said casing; andselectively operated by said control circuit in consequence of the flow or interruption of the dispersion current to ground; said control circuit being adapted to be enabled by the flow of the dispersion current in use towards said spark plug and to enable the light indicator exclusively when said flame is present. 6. The device according to claim 1, wherein the at least one spark plug comprises a first spark plug and a second spark plug both fastenable to the household appliance in proximity of the burner unit carried by the household appliance so as to be electrically connected to ground;the first spark plug being electrically connected to said lighting circuit; andthe second spark plug being electrically connected exclusively to said control circuit, so as to serve exclusively as a flame sensor. 7. A household appliance comprising a lighting and control device according to claim 1,at least one spark plug for each range;said lighting circuit including a plurality of high voltage output contacts carried by said casing, each of which is connectable in use to a respective spark plug through wires. 8. A household appliance comprising a lighting and control device according to claim 1, wherein said at least one spark plug is arranged at a pilot burner to light all the burners of the household appliance. 9. The device according to claim 4, wherein the button switch is integrated on the same support as said light indicator. 10. The device according to claim 1, wherein the reference potential is a ground potential. 11. A device, comprising: an apparatus configured to light and control a burner in a household appliance, the apparatus including: an electrical supply unit;a lighting circuit;a casing made of non-conducting material and fastenable in use to the household appliance, said casing carrying said electrical supply unit and said lighting circuit;at least one spark plug electrically connected to said lighting circuit and fastenable to the household appliance in proximity of a burner unit carried by the household appliance so as to be electrically connected to a reference potential, the spark plug being adapted to generate a spark between itself and the burner unit to ignite a flame when said lighting circuit is powered by a high voltage alternating current consequent to a feeding of a flow of combustible gas to said burner unit;a light indicator; anda control circuit electrically connected to said spark plug and the light indicator, the light indicator fastenable in use to the household appliance, whereinthe control circuit is adapted to selectively turn said light indicator on or off based on a dispersion current flowing through the spark plug to the reference potential when the burner unit is lit,said electrical supply unit is a direct current low voltage generator unit accommodated in the casing, andsaid electrical supply unit is adapted to supply power, in parallel, to said lighting circuit through a dc/ac transformer unit and to said control circuit through an electrical disconnection unit. 12. The device according to claim 11, wherein the reference potential is a ground potential. 13. The device according to claim 11, wherein the dispersion current being in an order of a few microamperes. 14. The device according to claim 11, wherein the device further includes the household appliance in which there is the burner, and wherein the apparatus is in communication with the burner to light and control the burner. 15. The device according to claim 1, wherein the device further includes the household appliance in which there is the burner, and wherein the apparatus is in communication with the burner to light and control the burner. 16. The device according to claim 1, wherein the direct current low voltage generator unit is a 9 volt battery. 17. The device according to claim 11, wherein the direct current low voltage generator unit is a 9 volt battery. 18. A device, comprising: an means for lighting and controlling a burner in a household appliance, the apparatus including: a means for supplying electricity;a lighting circuit;a means for carrying said means for supplying electricity and said lighting circuit, said means for carrying being fastenable in use to the household appliance;a means for generating a spark between itself and a burner unit to ignite a flame when said lighting circuit is powered by a high voltage alternating current consequent to a feeding of a flow of combustible gas to the burner unit, the means for generating a spark being electrically connected to said lighting circuit and fastenable to the household appliance in proximity of the burner unit, which is carried by the household appliance, so as to be electrically connected to a reference potential;a means for indicating lighting; anda control circuit electrically connected to said means for generating a spark and the means for indicating lighting, the means for indicating lighting being fastenable in use to the household appliance, whereinthe control circuit is adapted to selectively turn said means for indicating lighting on or off based on a dispersion current flowing through the means for generating a spark to the reference potential when the burner unit is lit,said means for supplying electricity is accommodated in the casing, andsaid means for supplying electricity is adapted to supply power, in parallel, to said lighting circuit through a dc/ac transformer unit and to said control circuit through an electrical disconnection unit.