Abstract:
System for fastening ignition spark plugs (2) of boilers or the like, comprising a supporting plate (1), which supporting plate (1) has at least one insertion hole (11) intended for the insertion of a spark plug (2) and/or of an inspection window (6), which spark plug (2) comprises an outer ceramic tubular body (21), inside which a detection and/or ignition rod (22) is housed which projects at least from one head end of said ceramic tubular body (21). Said insertion hole (11) having such dimensions that said spark plug (2), in the inserted condition, forms a gap region between the outer surface of the tubular body (21) of the spark plug (2) and the inner surface of the insertion hole (11), at least in said gap region there being provided means (4) for fastening and sealing said spark plug (2) to said supporting plate (1). Said fastening and sealing means (4) are composed of glass material (4) which is brought in the liquid or semi-liquid phase beforehand such to adhere mechanically and/or by chemical/physical adhesion to the outer surface of said tubular body (21) of the spark plug (2) and to the inner surface of said insertion hole (11) and subsequently it is brought to the solid phase.
Abstract:
High-voltage transformer comprising at least one primary winding (1) wound around a magnetic core (2) and at least one secondary winding (3), the ends of the primary winding (1) being connected to a low voltage direct electric current source and there being further provided means for interrupting the direct current intended to periodically interrupt the direct current supply to said primary winding (1). The primary winding (1) is at least partially contained within the outer profile of the magnetic core (2).
Abstract:
Cooking device with at least one flame ignition control device for burners or the like prearranged for operating in presence of strong and important liquid overflows and catenary composed of a plurality of said devices. According to the invention the ignition devices are positioned with the corresponding switch in a region not coincident with the port of an opening for the passage of the knob or for the access of the control shaft of the gas adjustment cock. The invention further has implementation characteristics of the switching members of the switch that allow increasing the safety with respect to the protection from infiltrations of liquids overflown thereon through the holes for the passage of the knob and/or for accessing to the adjustment shaft of the gas adjustment cocks.
Abstract:
Thermocouple assembly comprising a temperature sensor operating in accordance with the thermoelectric effect and having an output directly or indirectly controlling an electromagnetic member driving a cut-off opening/closing the gas passage to a user, which output is connected to the temperature sensor through at least one conductor, being further characterized in that a generator of a supply signal of said electromagnetic member for switching the latter to the open condition for the gas passage to the user is provided, which is connected by means of a solid-state circuit breaker to the driving member through the thermocouple output by controlling the conduction or insulation condition of said breaker by means of the signal generated by a drive unit depending on at least one physical quantity to be controlled, among which, time, power, position or by the temperature sensor being integral with the thermocouple, and wherein said solid-state circuit breaker is mounted directly on said at least one cable connecting the temperature sensor to the thermocouple output assembly.
Abstract:
Flame ignition control device comprising flame adjustment means connectable to a gas supply source through at least one valve (2), which comprise a driving member composed of a driving shaft (1) mounted so as to rotate about its own longitudinal axis and mounted so as to translate in the direction of its own longitudinal axis, such to move between two extreme positions such to move from a maximum withdrawn condition to a maximum insertion condition respectively. There is further provided a control unit that comprises comprises two conductor elements (31, 32) connectable to an electric supply source and a switch, which switch has a closed condition, where the two conductor elements (31, 32) are connected with each other, and an open condition, where the two conductor elements (31, 32) are not connected with each other, said switch passing from the closed condition to the open condition by the movement of a member switching the condition of the switch, which switching member is moved by the translation of said driving shaft (1), such that the closed condition of said switch corresponds to the maximum insertion condition of said driving shaft (1). The switching member is provided coaxial to said driving shaft (1).