A cooking appliance includes a frame defining a cooking chamber, a a magnetron for generating microwaves to cook food received in the cooking chamber, a door connected to the frame and configured to open and close the cooking chamber, a gasket disposed at the door and configured to contact a front portion of the frame based on the door closing the cooking chamber, and a leakage prevention part that is disposed at the door and that defines a space portion for preventing leakage of the microwaves. The gasket is coupled to the space portion.

A refrigerator according to the present disclosure includes at least one storage chamber and uses an electromagnetic wave to heat a stored object inside the storage chamber. A first electromagnetic wave shield is provided on a door of the storage chamber, and a second electromagnetic wave shield is provided on a housing part of the refrigerator that is in contact with the door while the door is closed. This makes it possible to provide a structure capable of exhibiting a function as an electromagnetic wave shield even for a refrigerator door in which wiring to a grounding part is difficult.

A microwave device includes a microwave cavity, a frame, and a window having an electrically insulating substrate and a structure of metallic wires supported by the substrate. The frame defines a perimeter of an opening in the microwave cavity and the frame is conductive and grounded. The window spans the opening and is arranged to reflect RF radiation back into the cavity and to shield the outside of the microwave cavity from RF radiation. The window is optically transparent. Each metallic wire of the structure is electrically connected to the frame and the width of each metallic wire is between 100 nanometres and 30 micrometres.

A food processing machine for processing a food product includes a processing module having a housing with a sidewall, opposing end walls, and a chamber between the end walls and a conveyor extending through the end walls and the chamber and configured to convey the food product through the chamber. A microwave generating device is coupled to the sidewall and configured to generate microwave energy. A waveguide assembly is configured to receive the microwave energy, direct the microwave energy along a waveguide axis, and subsequently direct the microwave energy in a transverse direction that is transverse to the vertical direction through the sidewall and into the chamber such that the microwave energy heats the food products.

A food processing machine for processing a food product includes a processing module having a housing with a sidewall, opposing end walls, and a chamber between the end walls and a conveyor extending through the end walls and the chamber and configured to convey the food product through the chamber. A microwave generating device is coupled to the sidewall and configured to generate microwave energy. A waveguide assembly is configured to receive the microwave energy, direct the microwave energy along a waveguide axis, and subsequently direct the microwave energy in a transverse direction that is transverse to the vertical direction through the sidewall and into the chamber such that the microwave energy heats the food products.

A system for processing precursor material, including at least one microwave generator, at least one microwave guide operatively connecting the at least one microwave generator to at least a first conveyor unit, and the first conveyor unit provided in a first housing that comprises at least one opening configured to receive microwave energy via a first microwave guide. The first conveyor unit is configured to receive and process a quantity of precursor material, which includes heating the precursor material to a first temperature by applying microwave energy to the precursor material within the first housing.

A system for processing precursor material, including at least one microwave generator, at least one microwave guide operatively connecting the at least one microwave generator to at least a first conveyor unit, and the first conveyor unit provided in a first housing that comprises at least one opening configured to receive microwave energy via a first microwave guide. The first conveyor unit is configured to receive and process a quantity of precursor material, which includes heating the precursor material to a first temperature by applying microwave energy to the precursor material within the first housing.

Systems and methods of processing biomass include a conveyor unit associated with an inlet and/or outlet, a microwave generator, a microwave guide connecting the microwave generator to the conveyor unit that includes a microwave opening configured to receive microwave energy via the microwave guide, and a microwave suppression system including a tunnel associated with the material inlet and/or outlet, and including at least one flexible and/or movable microwave reflecting component within the tunnel, the microwave reflecting component configured to be deflected as biomass material passes through the tunnel and then returning to a resting, closed position when the biomass material is no longer passing through the tunnel. The conveyor unit is configured to receive and process the biomass material, including heating the biomass material to at least a first temperature by applying microwave energy to the biomass material.

A heating arrangement for an oven includes a heating assembly including a plurality of elongate heating members extending along respective longitudinal axes oriented in a first direction and mutually spaced apart in a second direction perpendicular to the first direction. The heating arrangement further includes a cover unit having a body extending along a plane oriented parallel with the plurality of elongate heating members and spaced apart therefrom in a third direction perpendicular to the first and second directions. A plurality of openings extend through the body with at least some of the openings being aligned with respective ones of the elongate heating members in the first and second directions.

Methods and apparatus for a substrate processing chamber are provided herein. In some embodiments, a substrate processing chamber includes a chamber body having sidewalls defining an interior volume having a polygon shape; a selectively sealable elongated opening disposed in an upper portion of the chamber body for transferring one or more substrates into or out of the chamber body; a funnel disposed at a first end of the chamber body, wherein the funnel increases in size along a direction from an outer surface of the chamber body to the interior volume; and a pump port disposed at a second end of the chamber body opposite the funnel.