Abstract: The barbecue grill includes a cooking compartment, a cooking surface located in the cooking compartment, and at least one heating element located under the cooking surface and operated to provide heat for cooking food placed on the cooking surface. The barbecue grill also includes at least one additional heating element to generate electromagnetic radiation in the microwave spectrum and feed the electromagnetic radiation into the cooking compartment for investing food placed on the coking surface.

Abstract: Barbecue appliance (1) including a lower housing (10), a cooking surface (30) located in the lower housing (10), a hood (20) positionable over the lower housing (10), and a catalytic filter assembly (40). The hood (20) includes a fixed part (22) and a movable part (24), the movable part (24) being configured to be opened and closed during operation of the barbecue appliance (1) and the catalytic filter assembly (40) being positioned in the fixed part (22) of the hood.

Abstract: A descaling arrangement for a dishwasher and an associated apparatus are provided. The dishwasher has a tub portion adapted to receive dishware therein, and a fluid circulation system configured to circulate dishwashing fluid about the dishware within the tub portion. A descale system is in fluid communication with the fluid circulation system. The descale system is configured to selectively introduce a descaling substance into dishwashing fluid circulated within the fluid circulation system such that the descaling substance is distributed to at least one of the tub portion and the fluid circulation system for descaling thereof. An associated method is also provided.

Abstract: Apparatus for cooking food products on both sides thereof, comprising a base member associated to a bottom heating surface, a first electric heating element located between the base member and the bottom heating surface, an upper movable member associated to a top heating surface, a second electric heating element located between said upper member and said top heating surface, and one or more microwave generators housed in the base member; when said upper member is lowered, the top heating surface comes to lie opposite to the bottom heating surface so as to form a cooking cavity therebetween. Said first electric heating element is separated from the bottom heating surface by a hollow space and the microwave generator is placed in such position, with the use of appropriate wave-guide means, as to allow the microwaves issuing therefrom to propagate towards said hollow space and, eventually, towards the bottom surface of said bottom heating surface.

Abstract: Apparatus for cooking food products on both sides thereof, comprising a base member associated to a bottom heating surface, a first electric heating element located between the base member and the bottom heating surface, an upper movable member associated to a top heating surface, a second electric heating element located between said upper member and said top heating surface, and one or more microwave generators housed in the base member; when said upper member is lowered, the top heating surface comes to lie opposite to the bottom heating surface so as to form a cooking cavity therebetween. Said first electric heating element is separated from the bottom heating surface by a hollow space and the microwave generator is placed in such position, with the use of appropriate wave-guide means, as to allow the microwaves issuing therefrom to propagate towards said hollow space and, eventually, towards the bottom surface of said bottom heating surface.

Abstract: A valve unit for controlling the delivery of a fuel gas through a delivery duct (3) comprises a valve seat (6) in the duct, a closure member (5) associated with the seat, a motor-driven actuator (7) acting on the closure member in order to control it so as to open/close the valve seat, as well as an electromagnetic unit (22) with a first portion (23) carrying a magnetizing winding (24) and a second portion (25) which can be fixed firmly to the first position by magnetization.

Abstract: A valve unit for modulating the delivery pressure of a gas. The valve unit delivers a gas flow and has a servo-valve with a first closure element and a tapping duct. The valve unit further has a pressure regulator associated with the servo-valve and including a valve seat mounted in the tapping duct and a respective second closure element associated with the seat, as well as an actuator associated with the second closure element, and a control circuit for generating a control signal for the actuator. The movement of the second closure element relative to the corresponding valve seat is correlated proportionally with the actuator-control signal so that, for a pre-selected signal value, a corresponding control-pressure value is generated so as to modulate the delivery pressure in a proportionally correlated manner.

Abstract: A valve unit for controlling the delivery of a fuel gas through a delivery duct (3) comprises a valve seat (6) in the duct, a closure member (5) associated with the seat, a motor-driven actuator (7) acting on the closure member in order to control it so as to open/close the valve seat, as well as an electromagnetic unit (22) with a first portion (23) carrying a magnetizing winding (24) and a second portion (25) which can be fixed firmly to the first portion by magnetization.

Abstract: A device for measuring the flow-rate of gas in a duct, particularly for burners. The device includes a gas flow-rate sensor generating a first output signal proportional to the flow-rate detected, a temperature-compensation circuit receiving the first output signal and generating a second output signal proportional to the gas flow-rate detected by the sensor and independent of the temperature of the gas and/or the flow-rate sensor. The compensation circuit has a temperature sensor. The device also includes a calibration circuit receiving the second output signal. The calibration circuit generates a third output signal proportional to the gas flow-rate detected and independent of structural parameters of the flow-rate sensor and/or of the temperature sensor so that the third output signal is correlated with the flow-rate detected and independent of the temperature of the gas, the temperature of the flow-rate sensor, and the structural parameters of the flow-rate sensor.

Abstract: A device for measuring the flow-rate of gas in a duct, particularly for burners. The device includes a gas flow-rate sensor generating a first output signal proportional to the flow-rate detected, a temperature-compensation circuit receiving the first output signal and generating a second output signal proportional to the gas flow-rate detected by the sensor and independent of the temperature of the gas and/or the flow-rate sensor. The compensation circuit has a temperature sensor. The device also includes a calibration circuit receiving the second output signal. The calibration circuit generates a third output signal proportional to the gas flow-rate detected and independent of structural parameters of the flow-rate sensor and/or of the temperature sensor so that the third output signal is correlated with the flow-rate detected and independent of the temperature of the gas, the temperature of the flow-rate sensor, and the structural parameters of the flow-rate sensor.

Abstract: A method for the operative control of fuel cells (2) is described and comprises the steps of providing an electronic control unit (8), regulating the quantity of fuel and/or supporter of combustion which flows per unit of time in a supply circuit (4, 5) of the fuel cell (2) by regulation means (6, 7, 13, 14, 16, 17), obtaining a temperature signal (T) from the cell (2), obtaining a power signal (W) from a closed circuit (11) including the cell, supplying the signals to the electronic control unit (8), and making the regulation means (6, 7, 13, 14, 16, 17) subject to the electronic control unit (8), the regulation of the quantity of fuel and/or supporter of combustion being of the modulating type, and the modulation taking place in dependence on the temperature and power signals. The invention is also directed towards a device (1, 100) operating in accordance with the method.