Abstract: A household or commercial appliance includes a couple magnetrons having relative anodes and cathodes, and a power unit comprising a high voltage circuit. The high voltage circuit comprises: a high voltage transformer comprising a primary winding connected to an alternating voltage source and a secondary high-voltage winding providing an alternating high voltage having a period comprising two half periods, a couple of half-wave voltage doubler circuits, and first and second unidirectional conducting devices. The first and second unidirectional conducting devices being configured to cause the half-wave voltage doubler circuits to supply, during a period of the alternating high-voltage the doubled high-voltage to the cathode of the respective magnetron alternately.

Abstract: An apparatus for cooking food products includes: a first heating plate adapted to support the food products; a second heating plate adapted to face the food products during a cooking operation; a first resistive heating element associated with the first heating plate and adapted to provide heat to the food products during the cooking operation; a second resistive heating element associated with the second heating plate and adapted to provide heat to the food products during the cooking operation, and at least one microwave generator element configured to selectively generate microwave radiation for haeting the food products during the cooking operation. At least a selected resistive heating element between the first resistive heating element and the second resistive heating element is joined to a surface of the associated heating plate so that it forms a single piece with the associated heating plate.

Abstract: A cooking apparatus (1) comprises a base (7) comprising a lower heater (2) defining a bottom cooking surface (4) where a foodstuff (F) to be cooked can be positioned; a cover (8) closable onto the base (7) and comprising an upper heater (3) defining a top cooking surface (5) and a lifting system (16) for moving the upper heater to and from the lower heater when the cover is closed onto the base; a database (103) storing a plurality of selectable cooking programs each including one or more cooking phases each associated with corresponding cooking parameters including a temperature of the upper heater and a distance (d) of the top cooking surface from the bottom cooking surface; and a controller (18) configured to control the operations of the lifting system and the upper heater based on the cooking parameters of a selected program.

Abstract: The present invention relates to a household or commercial appliance (1) comprising: a heating chamber (7), a couple of magnetrons (8a)(8b) having relative anodes (TA1)(TA2) and cathodes (TC1)(TC2), a power unit (5, 40, 140) comprising at least a high voltage circuit (9) configured to power-on magnetrons (8a)(8b).

Abstract: A cooking apparatus (1) comprises a base (7) comprising a lower heater (2) defining a bottom cooking surface (4) where a foodstuff (F) to be cooked can be positioned; a cover (8) closable onto the base (7) and comprising an upper heater (3) defining a top cooking surface (5) and a lifting system (16) for moving the upper heater to and from the lower heater when the cover is closed onto the base; a database (103) storing a plurality of selectable cooking programs each including one or more cooking phases each associated with corresponding cooking parameters including a temperature of the upper heater and a distance (d) of the top cooking surface from the bottom cooking surface; and a controller (18) configured to control the operations of the lifting system and the upper heater based on the cooking parameters of a selected program.

Abstract: An apparatus for cooking food products includes a first heating plate adapted to support the food products; a second heating plate adapted to face the food products during cooking; a first resistive heating element associated with the first heating plate and adapted to generate infrared radiation for heating the food products during the cooking; a second resistive heating element associated with the second heating plate and adapted to generate infrared radiation for heating the food products during the cooking, and at least one microwave generator configured to selectively generate microwave radiation for heating the food products during the cooking The first heating plate and/or the second heating plate is made of a material that is at least partially transparent to microwave radiation and not transparent to infrared radiation, so as to increase its temperature by infrared radiation absorption to provide heat to the food products by heat conduction.

Abstract: An apparatus for cooking food products includes: a first heating plate adapted to support the food products; a second heating plate adapted to face the food products during a cooking operation; a first resistive heating element associated with the first heating plate and adapted to provide heat to the food products during the cooking operation; a second resistive heating element associated with the second heating plate and adapted to provide heat to the food products during the cooking operation, and at least one microwave generator element configured to selectively generate microwave radiation for heating the food products during the cooking operation. At least a selected resistive heating element between the first resistive heating element and the second resistive heating element is joined to a first surface of the associated heating plate so that it forms a single piece with the associated heating plate.

Abstract: An apparatus for cooking food products on both sides which has a food-support surface that is transparent to both microwave and infrared radiation, an electric heating device, and a microwave generator. The microwave generator is connected to a waveguide cavity for irradiating the food products. The apparatus also has a food-contact heating surface that, together with the food-support surface, forms a cooking chamber capable of retaining the microwaves inside. The electric heating device has a shielded resistor with the external shield electrically connected to ground. The apparatus has a partition element made of thermal-insulating and microwave-transparent material, a portion of which is below the shielded resistor to separate the resistor from the microwave generator. The waveguide cavity has a microwave launch aperture underneath the partition element.

Abstract: An apparatus for cooking food products on both sides thereof, including a base member (2) comprising a food-support surface (3) transparent to both microwave and infrared radiation, an electric heating device (4) and at least one microwave generator (5), said microwave generator (5) being connected to a waveguide cavity (6) for irradiating the food products, an upper member (7) comprising a food-contact heating surface (8) and adapted to close in onto the base member (2) so as to form a cooking chamber (9) enclosing said surfaces (3,8) and capable to retaining the microwaves there within.