A thermal increase system may include re-radiators disposed in a cavity for containing a load. Microwave energy may be generated by one or more microwave generation modules, and directed toward the cavity during operation of the thermal increase system, thereby creating an electromagnetic field in the cavity. A system controller may control switches coupled between the re-radiators and corresponding ground nodes to selectively activate and de-activate the re-radiators. The system controller may control a switch coupled between a pair of re-radiators to re-distribute the electromagnetic field in the cavity. A phase shifter may be disposed between a pair of re-radiators, which may provide a phase shift to energy passed between the re-radiators. The phase shifter may be a variable shifter that applies a variable phase shift to the energy according to commands received from the system controller.

A waveguide device includes a first electrical conductor including a first electrically conductive surface extending along first and second directions, a second electrical conductor including a second electrically conductive surface opposing the first electrically conductive surface, a waveguide located between the first electrical conductor and the second electrical conductor and extending along the first direction, the waveguide including an electrically-conductive waveguide surface opposing the first electrically conductive surface, and a plurality of electrically-conductive rod rows located on opposite sides of the waveguide, each rod row including a plurality of electrically conductive rods arranged along the first direction. At least one of the first electrical conductor and the second electrical conductor includes at least one hole.

According to a first aspect, there is provided an adaptive cooking device that includes: a cooking chamber configured to receive a food product, an antenna assembly, an RF power source, a sensor assembly coupled to the cooking chamber and comprising a plurality of sensors, each sensor configured to obtain a measurement characterizing a cooking process in real-time, and one or more sensors of the plurality of sensors configured to obtain a different type of the measurement, and a controller coupled to the antenna assembly, the sensor assembly, and the RF power source, wherein the controller is configured to: receive the measurement characterizing the cooking process from the sensor assembly, process the measurement to determine a modified cooking process, and operate the antenna assembly and the RF power source in accordance with the modified cooking process in real-time.

According to a first aspect, there is provided an adaptive cooking device that includes: a cooking chamber configured to receive a food product, an antenna assembly, an RF power source, a sensor assembly coupled to the cooking chamber and comprising a plurality of sensors, each sensor configured to obtain a measurement characterizing a cooking process in real-time, and one or more sensors of the plurality of sensors configured to obtain a different type of the measurement, and a controller coupled to the antenna assembly, the sensor assembly, and the RF power source, wherein the controller is configured to: receive the measurement characterizing the cooking process from the sensor assembly, process the measurement to determine a modified cooking process, and operate the antenna assembly and the RF power source in accordance with the modified cooking process in real-time.

A cooking apparatus includes a cooking chamber, a heating source disposed below the cooking chamber to produce high-frequency waves, a main plate forming at least a portion of the cooking chamber and including a front side which is opened, a front plate coupled to the front side of the main plate and including a base having an opening connected to the cooking chamber, and a front coupling flange. The front coupling flange is bent rearward from an inner end of the base, coupled by curling with the main plate, and has a portion which protrudes above a lower surface of the main plate.

A microwave heating apparatus and a method of operating a microwave heating apparatus are provided. The microwave heating apparatus comprises a load receiving cavity, at least one microwave source, a plurality of feeding ports connected to the microwave source and the cavity for feeding microwaves to the cavity, a measuring unit and a control unit. The measuring unit measures, for at least one frequency or within a frequency range, the power of microwaves reflected back to the microwave source for at least part of the plurality of feeding ports. The control unit selects at least one of the feeding ports based on the measured powers of the reflected microwaves in order to feed microwaves to the cavity via the at least one selected feeding port during operation of the microwave heating apparatus at the at least one frequency or within the frequency range.

A microwave heating apparatus and a method of operating a microwave heating apparatus are provided. The microwave heating apparatus comprises a load receiving cavity, at least one microwave source, a plurality of feeding ports connected to the microwave source and the cavity for feeding microwaves to the cavity, a measuring unit and a control unit. The measuring unit measures, for at least one frequency or within a frequency range, the power of microwaves reflected back to the microwave source for at least part of the plurality of feeding ports. The control unit selects at least one of the feeding ports based on the measured powers of the reflected microwaves in order to feed microwaves to the cavity via the at least one selected feeding port during operation of the microwave heating apparatus at the at least one frequency or within the frequency range.

Disclosed is a heating device (100), including: a metal cylinder body (110) provided with a pick-and-place opening, a door body (120) configured to open and close the pick-and-place opening, an electromagnetic generating module (161) configured to generate an electromagnetic wave signal, and a radiating antenna (150). The radiating antenna (150) is configured to be electrically connected with the electromagnetic generating module (161) to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal. The heating device (100) further includes an antenna housing (130) made of an insulating material. The antenna housing (130) is configured to separate an inner space of the cylinder body (110) into a heating chamber (111) and an electrical appliance chamber (112), wherein an object to be processed and the radiating antenna (150) are respectively disposed in the heating chamber (111) and the electrical appliance chamber (112), and the radiating antenna (150) is configured to be fixedly connected with the antenna housing (130). The heating device (100) covers and fixes the radiating antenna (150) through the antenna housing (130), which not only can separate the object to be processed from the radiating antenna (150) to prevent the radiating antenna (150) from being dirty or damaged by accidental touch, but also can simplify the assembly process of the heating device (100) to facilitate the positioning and installation of the radiating antenna (150).

Disclosed is a heating device (100), including: a metal cylinder body (110) provided with a pick-and-place opening, a door body (120) configured to open and close the pick-and-place opening, an electromagnetic generating module (161) configured to generate an electromagnetic wave signal, and a radiating antenna (150). The radiating antenna (150) is configured to be electrically connected with the electromagnetic generating module (161) to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal. The heating device (100) further includes an antenna housing (130) made of an insulating material. The antenna housing (130) is configured to separate an inner space of the cylinder body (110) into a heating chamber (111) and an electrical appliance chamber (112), wherein an object to be processed and the radiating antenna (150) are respectively disposed in the heating chamber (111) and the electrical appliance chamber (112), and the radiating antenna (150) is configured to be fixedly connected with the antenna housing (130). The heating device (100) covers and fixes the radiating antenna (150) through the antenna housing (130), which not only can separate the object to be processed from the radiating antenna (150) to prevent the radiating antenna (150) from being dirty or damaged by accidental touch, but also can simplify the assembly process of the heating device (100) to facilitate the positioning and installation of the radiating antenna (150).

Disclosed is a refrigerating and freezing device (200), including a cabinet defining at least one storage compartment, a refrigerating system configured to provide cooling capacity to the at least one storage compartment, and a heating unit (100). The heating unit (100) includes a metal cylinder body (110) disposed in one storage compartment, a door body (120) configured to open and close a pick-and-place opening of the metal cylinder body (110), and an electromagnetic generating system generating electromagnetic waves in the cylinder body (110) to heat an object to be processed. At least a part of the electromagnetic generating system is disposed in the cylinder body (110) or accessed into the cylinder body (110). The cylinder body (110) is configured to be grounded to discharge the high-voltage electrostatic charges on the cylinder body (110), thereby avoiding potential safety hazards