Valvular control circuit

Abstract

Valvular control circuit (10) comprising a first valve element (12) coupled with a manual drive member (20) to generate a pilot light (21), a second valve element (14) coupled with a second valve switch (15), a control and command unit (16) coupled with a DC/DC electric voltage converter (17) and able to command said second valve switch (15) by means of a command signal, wherein said valvular control circuit (10) comprises a first thermoelectric power source (22) coupled with the DC/DC electric voltage converter (17), and a second thermoelectric power source (23) coupled with at least one of either the first valve element (12) or the second valve element (14), said thermoelectric power sources (22, 23) both being fed by a pilot light (21).

1 . Valvular control circuit comprising a first valve element coupled with a manual drive member to generate a pilot light, a second valve element coupled with a second valve switch, a control and command unit coupled with a DC/DC electric voltage converter and able to command said second valve switch via a command signal, a first thermoelectric power source coupled with said DC/DC electric voltage converter, and a second thermoelectric power source coupled with at least one of either said first valve element or said second valve element, said thermoelectric power sources both being fed by said pilot light. 
     
     
         2 . Circuit as in  claim 1 , wherein said first valve element is coupled with a first valve switch and said control and command unit is able to command said first valve switch by means of a command signal. 
     
     
         3 . Circuit as in  claim 1 , wherein said first thermoelectric power source is coupled with said second valve element, and said second thermoelectric power source is coupled with said first valve element. 
     
     
         4 . Circuit as in  claim 1 , wherein said second thermoelectric power source is coupled with said first valve element and with said second valve element. 
     
     
         5 . Circuit as in  claim 1 , wherein said second thermoelectric power source comprises a thermocouple. 
     
     
         6 . Circuit as in  claim 1 , wherein at least one of either the two thermoelectric power sources comprises a thermopile. 
     
     
         7 . Circuit as in  claim 1 , further including a rechargeable energy source removably coupled with said DC/DC electric voltage converter and with said control and command unit. 
     
     
         8 . Circuit as in  claim 1 , wherein said control and command unit has, or is connected to, at least a monitoring device able to monitor the electromotive force generated by one or both of said thermoelectric power sources and to signal their functioning state and/or wear in relation to the electromotive forces measured. 
     
     
         9 . Circuit as in  claim 1 , wherein said control and command unit has, or is connected to, a sensor able to detect the electric voltage of one or both of said thermoelectric power sources and, if said electric power voltage detected is greater than a threshold value of electric voltage, or the difference of electric voltage between said thermoelectric power sources is comprised in a predetermined voltage range, said sensor is configured to send an alarm signal. 
     
     
         10 . Circuit as in  claim 1 , wherein said thermoelectric power sources are equal, or they have one or more characteristic parameters chosen from a group comprising time constant, electric resistance and electromotive force which can be generated, that are different from each other.