Primary control and ignition system for oil burners

Claim 2

In an electrical primary control and ignition system for oil burners, the combination including burner control means adapted to be connected to a main line source of AC current, a low voltage control circuit including burner ignition detection means, means providing a substantially lower voltage than line voltage in said control circuit, means in said low voltage control circuit including solid state means effective to actuate said burner control means, means interfacing between said low voltage control circuit and said burner control means, plasma generating means adapted to be connected to said main line source of AC current, and combustion initiation means operatively connected to said plasma generating means.

Claim 3

The combination as set forth in claim 1 including extended ignition means operatively connected to said plasma generating means and effective to maintain energization of said plasma generating means for a predetermined period of time as a function of ignition detected by said ignition detection means.

Claim 4

The combination as set forth in claim 1 wherein said control circuit also includes energy conversion means effective to interrupt the flow of current from said main line source of AC current, said ignition detection means also being effective to disable said energy conversion means.

Claim 5

The combination as set forth in claim 1, said plasma generating means including a silicon controlled rectifier having an anode, a cathode and a gate, a transformer having a primary winding and a secondary winding, a capacitor, a diode and a resistor, said primary winding and said diode being connected in series with said anode and said cathode, said resistor being connected in parallel with said diode, said capacitor being connected in parallel with said anode and said cathode.

Claim 6

The combination as set forth in claim 1, said plasma generating means including trigger means and electronic brake means.

Claim 7

The combination as set forth in claim 5, said trigger means including a silicon controlled rectifier having an anode, a cathode and a gate, a pair of resistors, a diode, a capacitor and a trigger diode, one of said resistors, said diode, said capacitor and said trigger diode being connected across said anode and said cathode of said silicon controlled rectifier, the other of said resistors being connected to said gate.

Claim 8

The combination as set forth in claim 5, said electronic brake means comprising a pair of capacitors, a diode and a plurality of resistors, said diode, said resistors and one of said capacitors being connected in parallel with the other of said capacitors.

Claim 9

The combination as set forth in claim 1 wherein said burner control means includes a triac.

Claim 10

The combination as set forth in claim 1 wherein said interfacing means includes a reed switch having normally open contacts.

Claim 11

The combination as set forth in claim 1, said interfacing means including a reed switch having a pair of normally open contacts, said control circuit including a coil encompassing said contacts whereby energization of said coil effects closing of said contacts, said control circuit also including a DC supply for said coil.

Claim 12

The combination as set forth in claim 1, said combustion initiation means including a transformer having a primary winding and a secondary winding, and a pair of spaced electrodes electrically connected to said secondary winding.

Claim 13

The combination as set forth in claim 3, including electrical switch means controlled by said energy conversion means and effective to interrupt the flow of current from said main line source of AC current.

Claim 14

The combination as set forth in claim 1, said ignition detection means being in the form of a light dependent resistor.

Claim 15

The combination as set forth in claim 4, including choke means electrically connected in series with said capacitor.

Claim 16

The combination as set forth in claim 2, said extended ignition means including a silicon controlled rectifier and a capacitor controlling the actuation of said silicon controlled rectifier.

Claim 17

In an electrical primary control and ignition system for oil burners, the combination including burner control means adapted to be connected to a main line source of AC current, a low voltage control circuit including burner ignition detection means, means providing a substantially lower voltage than line voltage in said control circuit, means in said low voltage control circuit including solid state means effective to actuate said burner control means, means interfacing between said low voltage control circuit and said burner control means, plasma generating means adapted to be connected to said main line source of AC current, and combustion initiation means operatively connected to said plasma generating means.

Claim 18

In an electrical primary control and ignition system for oil burners, the combination including burner control means adapted to be connected to a main line source of AC current, a low voltage control circuit including burner ignition detection means, means providing a substantially lower voltage than line voltage in said control circuit, means in said low voltage control circuit including solid state means effective to actuate said burner control means, means interfacing between said low voltage control circuit and said burner control means, plasma generating means adapted to be connected to said main line source of AC current, and combustion initiation means operatively connected to said plasma generating means.

Claim 19

The combination as set forth in claim 16, said plasma generating means including a silicon controlled rectifier having an anode, a cathode and a gate, a transformer having a primary winding and a secondary winding, a capacitor, a diode and a resistor, said primary winding and said diode being connected in series with said anode and said cathode, said resistor being connected in parallel with said diode, said capacitor being connected in parallel with said anode and said cathode, and choke means electrically connected in series with said capacitor.

Claim 20

The combination as set forth in claim 17, said plasma generating means including trigger means and electronic brake means.

Claim 21

The combination as set forth in claim 18, said trigger means including a silicon controlled rectifier having an anode, a cathode and a gate, a pair of resistors, a diode, a capacitor and a trigger diode, one of said resistors, said diode, said capacitor and said trigger diode being connected across said anode and said cathode of said silicon controlled rectifier, the other of said resistors being connected to said gate.

Claim 22

The combination as set forth in claim 19, said electronic brake means comprising a pair of capacitors, a diode and a plurality of resistors, said diode, said resistors and one of said capacitors being connected in parallel with the other of said capacitors.

Claim 23

The combination as set forth in claim 20 wherein said burner control means includes a triac.

Claim 24

The combination as set forth in claim 22, said interfacing means including a reed switch having a pair of normally open contacts, said control circuit including a coil encompassing said contacts whereby energization of said coil effects closing of said contacts, said control circuit also including a DC supply for said coil.

Claim 25

The combination as set forth in claim 22, said combustion initiation means including a transformer having a primary winding and a secondary winding, and a pair of spaced electrodes electrically connected to said secondary winding.

Claim 26

The combination as set forth in claim 23, wherein said control circuit also includes energy conversion means effective to interrupt the flow of current from said main line source of AC current, said ignition detection means also being effective to disable said energy conversion means.

Claim 27

The combination as set forth in claim 24, including electrical switch means controlled by said energy conversion means and effective to interrupt the flow of current from said main line source of AC current.

Claim 28

The combination as set forth in claim 25, said ignition detection means being in the form of a light dependent resistor.

Claim 29

The combination as set forth in claim 26 including extended ignition means operatively connected to said plasma generating means and effective to maintain energization of said plasma generating means for a predetermined period of time as a function of ignition detected by said ignition detection means.

Claim 30

The combination as set forth in claim 27, said extended ignition means including a silicon controlled rectifier and a capacitor controlling the actuation of said silicon controlled rectifier.

Claim 31

In an ignition system for oil burners, the combination comprising ignition detection means, plasma generating means adapted to be connected to a main line source of AC current, combustion initiation means operatively connected to said plasma generating means, said plasma generating means including a silicon controlled rectifier having an anode, a cathode and a gate, a transformer having a primary winding and a secondary winding, a capacitor, a diode and a resistor, said primary winding and said diode being connected in series with said anode and said cathode, said resistor being connected in parallel with said diode, said capacitor being connected in parallel with said anode and said cathode, and extended ignition means operatively connected to said plasma generating means and effective to maintain energization of said plasma generating means for a predetermined period of time as a function of ignition detected by said ignition detection means.

Claim 32

In an ignition system for oil burners, the combination comprising ignition detection means, plasma generating means adapted to be connected to a main line source of AC current, combustion initiation means operatively connected to said plasma generating means, said plasma generating means including a silicon controlled rectifier having an anode, a cathode and a gate, a transformer having a primary winding and a secondary winding, a capacitor, a diode and a resistor, said primary winding and said diode being connected in series with said anode and said cathode, said resistor being connected in parallel with said diode, said capacitor being connected in parallel with said anode and said cathode, and extended ignition means operatively connected to said plasma generating means and effective to maintain energization of said plasma generating means for a predetermined period of time as a function of ignition detected by said ignition detection means.

Claim 33

The combination as set forth in claim 29, said plasma generating means including trigger means and electronic brake means.

Claim 34

The combination as set forth in claim 30, said trigger means including a silicon controlled rectifier having an anode, a cathode and a gate, a pair of resistors, a diode, a capacitor and a trigger diode, one of said resistors, said diode, said capacitor and said trigger diode being connected across said anode and said cathode of said silicon controlled rectifier, the other of said resistors being connected to said gate.

Claim 35

The combination as set forth in claim 30, said electronic brake means comprising a pair of capacitors, a diode and a plurality of resistors, said diode, said resistors and one of said capacitors being connected in parallel with the other of said capacitors.

Claim 36

The combination as set forth in claim 29, and combustion initiation means including said secondary winding, and a pair of spaced electrodes electrically connected to said secondary winding.

Claim 37

The combination as set forth in claim 29, including choke means electrically connected in series with said capacitor.

Claim 38

In an ignition system for oil burners, the combination comprising ignition detection means, plasma generating means adapted to be connected to a main line source of AC current, combustion initiation means controlled by said plasma generating means, said plasma generating means including a silicon controlled rectifier having an anode, a cathode and a gate, a transformer having a primary winding and a secondary winding, a capacitor, a diode and a resistor, said primary winding and said diode being connected in series with said anode and said cathode, said resistor being connected in parallel with said diode, said capacitor being connected in parallel with said anode and said cathode, said plasma generating means also including trigger means and electronic brake means, and extended ignition means operatively connected to said plasma generating means and effective to maintain energization of said plasma generating means for a predetermined period of time as a function of ignition detected by said ignition detection means.

Claim 39

In an ignition system for oil burners, the combination comprising ignition detection means, plasma generating means adapted to be connected to a main line source of AC current, combustion initiation means controlled by said plasma generating means, said plasma generating means including a silicon controlled rectifier having an anode, a cathode and a gate, a transformer having a primary winding and a secondary winding, a capacitor, a diode and a resistor, said primary winding and said diode being connected in series with said anode and said cathode, said resistor being connected in parallel with said diode, said capacitor being connected in parallel with said anode and said cathode, said plasma generating means also including trigger means and electronic brake means, and extended ignition means operatively connected to said plasma generating means and effective to maintain energization of said plasma generating means for a predetermined period of time as a function of ignition detected by said ignition detection means.

Claim 40

The combination as set forth in claim 35, said trigger means including a silicon controlled rectifier having an anode, a cathode and a gate, a pair of resistors, a diode, a capacitor and a trigger diode, one of said resistors, said diode, said capacitor and said trigger diode being connected across said anode and said cathode of said silicon controlled rectifier, the other of said resistors being connected to said gate.

Claim 41

The combination as set forth in claim 36, said electronic brake means comprising a pair of capacitors, a diode and a plurality of resistors, said diode, said resistors and one of said capacitors being connected in parallel with the other of said capacitors.

Claim 42

The combination as set forth in claim 37, and combustion initiation means including said secondary winding, and a pair of spaced electrodes electrically connected to said secondary winding.

Claim 43

The combination as set forth in claim 38, said extended ignition means including a silicon controlled rectifier and a capacitor controlling the actuation of said silicon controlled rectifier.

Claim 44

The combination as set forth in claim 38, said extended ignition means including a silicon controlled rectifier having an anode, a cathode and a gate, a resistor connected in series with said cathode, a plurality of diodes and a capacitor connected in parallel with said resistor, said capacitor being connected to said gate.