A microwave processing apparatus includes a cavity that has a cylinder-like shape, is rotatably supported, and includes an internal space for accommodating a microwave irradiation object, the cavity including at least one microwave transmission area in a partial region of the cavity in an axial direction; a rotary drive unit configured to rotate the cavity about the axis thereof; a cover member that is provided on an outer circumferential side of the at least one microwave transmission area while covering the entire portion of the cavity in a circumferential direction, the cover member forming a wave guidepath for microwaves and being fixed to a side of the base; and a microwave generator. Microwaves from the microwave generator are introduced into the internal space from a circumferential surface of the cavity via the wave guidepath.

A combined apparatus for heating, cooking, grilling and defrosting of foods of various kinds, depending on the type of foods to be treated from time to time and the duration of the foods treatment foreseen by each user of the same apparatus, where each hot treatment of foods may be effected either by heating or by microwaves only, or by heating and microwaves combined to each other. There are described in detail all the technical characteristics of the apparatus and the relative control circuits either for heating or for generating the microwaves. Advantages include use of a sole and single apparatus for hot treating the foods for providing for the heating, the cooking, the grilling and the defrosting of the same foods, instead of employing as it happens hitherto of single separated apparatuses for performing the same functions.

The present invention is a microwave heating device and has a microwave guide tube, two microwave transmitting modules, and a transmission module. The microwave guide tube forms a wave travelling path and has at least one conveying opening pair and at least one waveguide plate pair. The at least one conveying opening pair has two conveying openings respectively disposed on two opposite walls of the microwave guide tube along a conveying direction. The at least one waveguide plate pair is disposed in the microwave guide tube and has two waveguide plates parallel with the wave travelling path. The two microwave transmitting modules are disposed on two opposite ends of the microwave guide tube. The transmission module extends through the at least one conveying opening pair along the conveying direction.

Proposed are a radiation module, which can uniformly radiate microwaves from an upper part of a cooking chamber and can offset reflected waves in waveguides when microwaves are radiated from the upper part of the cooking chamber, and a microwave range having the same. The radiation module includes: first and second waveguides disposed at an upper part of a cooking chamber to form parallel routes to guide microwaves of a magnetron; and a plurality of paired slot antennas arranged on bottom surfaces of the first and second waveguides in a progress direction of the microwaves, wherein each paired slot antenna includes two slot antennas, the two slot antennas have a first interval distance relative to the progress direction of the microwaves and are arranged to intercross each other in the opposite directions to each other based on central lines of the waveguides.

Provided are a microwave range, which uniformly radiates microwaves from an upper part of a cooking chamber in order to cook food, and a radiation module thereof. The microwave range includes a cooking chamber, a magnetron that radiates microwaves through an antenna, and a radiation module including a waveguide that introduces the microwaves into an upper part of a rectangular upper surface of a cooking chamber from the antenna and provides a propagation path along which the introduced microwaves are horizontally guided along sides of the upper part of the upper surface of the cooking chamber, and radiating the microwaves to the cooking chamber through two or more paired slot antennas formed on a bottom surface of the waveguide.

This disclosure includes methods and systems that utilize energy absorption monitoring for intelligent electronic ovens with energy steering. One disclosed method for heating an item in an electronic oven includes introducing an application of energy into a heating chamber using an energy source coupled to an injection port, changing a distribution of the application of energy in the heating chamber by setting a configuration of the oven to a first configuration, and measuring an energy return from the heating chamber while the oven is in the first configuration. The measuring is conducted using a radio frequency directional power sensor. The method also includes determining that the energy return from the heating chamber exceeds a level, adjusting, in response to determining that the energy return exceeds the level, the configuration of the oven from the first configuration to an altered first configuration, and saving the altered first configuration in a memory.

Methods and systems for heating and compressing a material using microwaves. The system includes a flexible waveguide configured to receive a first portion of microwaves and a rigid waveguide configured to receive a second portion of microwaves. The system includes a top microwave antenna connected to the flexible waveguide, having a first plurality of slots for emitting the first portion of microwaves to be received by a top side of the material and heat the material. The system includes a bottom microwave antenna connected to the rigid waveguide, having a second plurality of slots for emitting the second portion of microwaves to be received by a bottom side of the material and heat the material. The system includes a presser configured to provide a downward force onto the top microwave antenna toward the material to compress the material as the material is being heated by the microwaves.

A combined apparatus for heating, cooking, grilling and defrosting of foods of various kinds, depending on the type of foods to be treated from time to time and the duration of the foods treatment foreseen by each user of the same apparatus, where each hot treatment of foods may be effected either by heating or by microwaves only, or by heating and microwaves combined to each other. There are described in detail all the technical characteristics of the apparatus and the relative control circuits either for heating or for generating the microwaves. Advantages include use of a sole and single apparatus for hot treating the foods for providing for the heating, the cooking, the grilling and the defrosting of the same foods, instead of employing as it happens hitherto of single separated apparatuses for performing the same functions.

A microwave guide suitable for carrying microwaves between an object that is vibrating that is connected to a first end of the guide and an object connected to the other end of the guide that is to be protected from transmitted vibrations, the guide providing a restricted path for the transmission of vibrations. In one embodiment, the guide has a flexible mesh part having an inner surface which has high electric conductivity and is provided with a plurality openings. The openings may be sufficiently small such that microwave radiation is unable to pass through the opening. The guide may also include a support structure which extends along the length of the guide. The support structure may have a low dielectric loss tangent and may be sufficiently rigid to provide support to the mesh part.

A three-dimensional resonant chamber is described. The three-dimensional resonant chamber may support a plurality of circularly polarized modes at a desired frequency. The desired frequency may be in an ISM (Industrial, Scientific, Medical) frequency band, such as in the 902 MHz-928 MHz or in the 2.4 GHz-2.5 GHz. The three-dimensional resonant chamber may include one or more openings for coupling electromagnetic radiation outside the three-dimensional resonant chamber. The three-dimensional resonant chamber may be disposed in a cavity, such as a microwave oven, and may be configured to excite the cavity through the one or more openings. The three-dimensional resonant chamber may be connected to a waveguide support a circularly polarized mode.