Abstract

A valve (1) for fluids, preferably for gases, comprising an inlet passage (2); an outlet passage (3); a shutter (4) interposed between the inlet passage (2) and the outlet passage (3) and movable between an open position and a closed position; actuating means (5) operatively active on the shutter (4); and a first stabilisation membrane (6) interposed between the shutter (4) and a fixed portion (7) of the valve (1). The first stabilisation membrane (6) exposes an active wall (8) to the fluid, which has an outer surface (9) shaped in such a way that the pressure of the fluid acting on the active wall (8) is lower than the pressure of the fluid acting on the rear surface (10) of the shutter (4), preventing the fluid from opening the shutter (4), when the shutter (4) is in the closed position and when the valve (1) is in a back pressure condition.

IPC Classes  ?

• F16K 39/02 - Devices for relieving the pressure on the sealing faces for lift valves
• F16K 41/10 - Spindle sealings with diaphragm, e.g. shaped as bellows or tube
• F16K 41/12 - Spindle sealings with diaphragm, e.g. shaped as bellows or tube with approximately flat diaphragm
• F16K 1/44 - Details of seats or valve members of double-seat valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

Valve (1) for fluids, preferably for gases, comprising an inlet passage (2) for a fluid; an outlet passage (3) for the fluid; a shutter (4) interposed between the inlet passage (2) and the outlet passage (3) and movable along a movement direction (L) between an open position and a closed position; first magnetic attraction means (5) operatively active on the shutter (4) for attracting and/or keeping the shutter (4) itself towards the open position; a box-shaped body (7) containing the first magnetic attraction means (5) and extending along the movement direction (L) between an outer face and an inner face with respect to an inner volume (V) of the valve (1) interposed between the inlet passage (2) and the outlet passage (3). The box- shaped body (7) further comprises a dividing wall (10) for isolating the first magnetic attraction means (5) from the inner volume (V).

IPC Classes  ?

• F16K 1/44 - Details of seats or valve members of double-seat valves
• F23D 14/00 - Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

A control device (1) for control and detection of the flame of a burner (200), comprising an ionisation electrode (2) arranged, in use, at a region in which a flame of the burner (200) is present, and an electric circuit (3) for generating a triangular voltage signal (Vtr) having a triangle wave form and connected to the ionisation electrode (2) in such a way that on varying the ionisation current (Ion) the average value of the triangular voltage signal (Vtr) also varies. Said device (1) comprises at least an output circuit (1 1) connected to the circuit (3) for generating the triangular voltage signal (Vtr) and comprising an electronic group (12) for generating a duty-cycle as a function of the average value of the triangular voltage signal (Vtr).

IPC Classes  ?

• F23N 5/12 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods

Abstract

A burner (100) comprising a sensor (1) for detecting a flame (2) comprising a sensitive element (3) of the flame (2) comprising a phototransistor or photodiode in use facing the flame (2) to receive an electromagnetic wave emitted by the flame (2) and an interface electric circuit (6) connected between the sensitive element (3) and an output (5) of the circuit configured for converting the detecting signal (4) generated by the sensitive element (3) into a flame signal (2) suitable for being received by a control system (103) of the burner (100).

IPC Classes  ?

• F23N 1/02 - Regulating fuel supply conjointly with air supply
• F23N 5/24 - Preventing development of abnormal or undesired conditions, i.e. safety arrangements
• F23N 5/08 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements

Abstract

Described is an integrated system (100) for regulating and mixing comburent and fuel for a burner, comprising a valve (1) for the fuel and ventilation means (40). These ventilation means (40) comprise a first inlet (41) for the comburent, a second inlet (54) for the fuel connected to an outlet passage of the valve (1), and an outlet connectable to the burner. Moreover, the valve (1) comprises a shutter (11) movable along a movement axis (12), between an open position, to allow the passage of the fuel, and a closed position to block the passage of the fuel. The system (100) comprises a unit (63) for detecting comburent along the first inlet (41) configured for detecting the presence of comburent in transit along the first inlet (41) and for activating the means (60) for holding in position the shutter (11).

IPC Classes  ?

• F23D 14/60 - Devices for simultaneous control of gas and combustion air
• F23D 14/62 - Mixing devicesMixing tubes

Abstract

Described is a valve (1) for fluids extending from an inlet duct (2) of the fluid to an outlet duct (3) of the fluid along a main direction of extension (4) and comprising an intermediate chamber (5) positioned between the inlet duct (2) and the outlet duct (3) and having an inlet opening (6) and an outlet opening (7). The valve (1) also comprises a first shutter (11) operatively associated with the inlet opening (6) and movable between an open position and a dosed position along a direction of movement (12) transversal to the main direction of extension (4). In addition, the valve comprises a second shutter (13) operatively associated with the outlet opening (7) and movable between an open position and a closed position of the outlet opening (7). In accordance with this invention, the first shutter (11) and the second shutter (13) are mutually superposed along the direction of movement (12) and the second shutter (13) is also movable along the direction of movement (12).

IPC Classes  ?

• F23N 1/00 - Regulating fuel supply
• F16K 39/02 - Devices for relieving the pressure on the sealing faces for lift valves
• F16K 1/44 - Details of seats or valve members of double-seat valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

Described is a valve (1 ) for fluids, comprising an inlet opening (6) of the fluid extending along a respective axis of extension (12) and an outlet opening (7) of the fluid extending along a respective axis of extension (4) positioned transversally relative to the axis of extension (12). Moreover, the valve (1 ) comprises a shutter (1 1 ) operatively associated with the inlet opening (6) and movable between an open position and a closed position along the axis of extension (12). More specifically, the shutter (1 1 ) defines a gap (33) placed in fluid communication with the inlet opening (6) and extending through the shutter (1 1 ) towards a transient space (32) which is closed, at least during the closed position of the shutter, with respect to the outlet opening.

IPC Classes  ?

• F23N 1/00 - Regulating fuel supply
• F16K 39/02 - Devices for relieving the pressure on the sealing faces for lift valves
• F16K 1/44 - Details of seats or valve members of double-seat valves
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

A method for controlling the combustion of a burner (1), at least comprising a step of igniting the burner (1) and comprising the following sub-steps: - feeding a predetermined quantity of comburent to the burner (1); - activating flame ignition means (4); - feeding a fuel to the burner (1) by increasing the flow of the fuel starting with a predetermined starting value until the flame (4) is ignited; - testing if the fuel flow ignition value, which ignites the burner (1), falls within a range of reference values; - if the fuel flow ignition value falls within the range of reference values, saving this fuel flow value in a memory register (5) used for saving fuel parameters and substantially keeping the fuel flow equal to the flow ignition value for at least a period of combustion time following ignition.

IPC Classes  ?

• F23N 5/12 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
• F23N 5/24 - Preventing development of abnormal or undesired conditions, i.e. safety arrangements

Abstract

Described is a device (1) for managing the electrical power which can be supplied to a lighting body (2), comprising a unit (5) for regulating the electrical power of a main power supply signal (4), an input interface (8) designed to receive an input signal (15) representing the main power supply signal (4), a time counting unit (9) configured to count the duration of at least one time interval between two consecutive switchings of the input signal (15). Moreover, the device comprises a processing unit (10) which is operatively connected to the time counting unit (9) of the electrical power for generating, as output, a signal (16) for configurating the regulating unit (5) according to the duration of the time interval counted.

IPC Classes  ?

• H05B 37/02 - Controlling

Abstract

Method of controlling a burner (BR) provided with combustion chamber (CC), combustive air supply means (F) driven by a motor, at least one fuel supply duct (DTI) interceptable by a respective electric valve (EV) means, and at least one exhaust duct (DT3) for the combustion gases, comprising the following steps: - predetermining a minimum and a maximum value for the current absorbed by said motor - establishing, for a plurality of flow rate values of fuel supplied to the burner, the minimum supply voltage of said motor for ensuring a combustive air flow rate suitable for ensuring correct combustion; - supplying fuel to said burner at a predetermined flow rate; - detecting the supply voltage of said supply means and the current absorbed by said motor - checking that, for the supplied fuel flow rate, the supply voltage is greater than a predetermined threshold value and that the value of the current absorbed does not diverge from a predetermined threshold value, and - generating an output control signal when at least one of the values of voltage and current does not comply with the respective thresholds.

IPC Classes  ?

• F23N 5/24 - Preventing development of abnormal or undesired conditions, i.e. safety arrangements
• F23N 5/12 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
• F23N 3/08 - Regulating air supply or draught by power-assisted systems
• F23N 1/06 - Regulating fuel supply conjointly with draught