A method of coherently controlling irradiation of an object in an enclosed cavity by at least two radio frequency (RF) feeds includes setting an amplitude, a phase and a frequency for each of the RF feeds; actuating all of the RF feeds with the respectively set amplitudes, phases and frequencies to irradiate the object; measuring a reflected power at each of the RF feeds; characterizing a complete scattering parameter matrix of the enclosed cavity while the object is being irradiated; and adjusting the power, the phase and the frequency for each of the RF feeds based on the complete scattering parameter matrix and values of the power, the phase and the frequency of the RF feeds before adjusting.

A high frequency energy generator system includes a plurality of high frequency energy generator heads. Each head includes a respective magnetron; a common drive unit for producing power for the plurality of magnetrons; and a connector arrangement connecting each of the plurality of heads to the common drive unit to supply power to the magnetrons. At least one of the heads is located remote from the common drive unit.

Carriers suitable for transporting a plurality of articles through a microwave heating zone are provided. Carriers as described herein may include an outer frame and upper and lower support structures vertically spaced from one another to provide a cargo volume into which the articles are loaded. At least a portion of the upper and/or lower support structures may be formed of an electrically conductive material. Additionally, the carrier may include removable article spacing members, such as vertical spacing members and dividers, that can be selectively inserted to adjust the size and/or shaper of the cargo volume. Carriers as described herein may be configured to receive a variety of different articles, including trays and pouches, and the articles may be loaded into the carrier in a nested or overlapping manner.

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.

An apparatus for cleaning cloth which includes a body with an aperture, a closure, which is engageable with the aperture, a tub with an outer shell and a cylindrical inner cavity which corresponds with the aperture, a drum, which is positioned inside the cylindrical inner cavity and which includes a wall, with an inner surface, an outer surface and a plurality of perforations in the wait, a base and an opposing mouth which registers with the aperture, a driver which is connected to or engaged with the drum and which allows rotational movement of the drum about an axis, a generator and an electrical power supply, inside the body, wherein the power supply is adapted to provide pulsating electrical power to the generator and wherein the generator is actuable to produce pulses of microwave energy at least into part of the drum.

A volatile content analysis instrument is disclosed that includes a cavity and a microwave source positioned to produce and direct microwaves into the cavity at frequencies other than infrared frequencies. A balance is included with at least the balance pan (or platform) in the cavity. An infrared source is positioned to produce and direct infrared radiation into the cavity at frequencies other than the microwave frequencies produced by the microwave source. A lens is positioned between the infrared source and the balance pan for more efficiently directing infrared radiation to a sample on the balance pan. The lens has dimensions that preclude microwaves of the frequencies produced by the source and directed into the cavity from leaving the cavity.

A microwave heating method using a microwave, including: controlling a frequency of the microwave, to form a single-mode standing wave; disposing an object to be heated in a magnetic field region where a strength of a magnetic field formed by the single-mode standing wave is uniform and maximum; and heating the object to be heated by magnetic heat generation by magnetic loss caused by an action of the magnetic field of the magnetic field region, and/or induction heating by an induced current generated in the object to be heated due to the magnetic field of the magnetic field region.

The invention relates to a method and to a device for generating three-dimensional objects by means of a generative method. According to the invention, powdered material and binding agents are applied sequentially and electromagnetic waves are used to cure the binding agent so that the powdered material bonded with the binding agent forms the three-dimensional object. The electromagnetic waves used are RF radiation. As a result, a fast and uniform curing of the three-dimensional object is achieved.

The method for manufacturing a part from powder relates to the electrical engineering field. In particular, to the processing of materials and the production of flat or three-dimensional products from both metal and plastic, ceramics, metal-plastic and metal-ceramics using microwave heating. The purpose is a method that uses the means of heating due to microwave radiation to sinter or melt the materials, both ceramic and plastic materials and metal powders. The method includes the creation of a microwave field within the operating chamber with a microwave radiation power of 100 W to 150 MW and a frequency of 1 GHz to 10 THz, depending on the physical properties of the powder, the dimensions, degree of accuracy and complexity of the geometric shapes of the sintered (melted) part, the development in the created microwave field of zones with increased intensity of microwave radiation, in which the powder heating zones are developed corresponding to the zones with increased intensity of microwave radiation, which shape follows the point or flat cutting (section) or the spatial pattern of the part, with the intensity of microwave radiation being sufficient for the thermal energy release to heat the powder to its sintering/melting temperature, taking into account the initial temperature of the powder, and where the powder is sintered or melted to produce the part by means of the released thermal energy in the heating zones of the powder.

Carriers suitable for transporting a plurality of articles through a microwave heating zone are provided. Carriers as described herein may include an outer frame and upper and lower support structures vertically spaced from one another to provide a cargo volume into which the articles are loaded. At least a portion of the upper and/or lower support structures may be formed of an electrically conductive material. Additionally, the carrier may include removable article spacing members, such as vertical spacing members and dividers, that can be selectively inserted to adjust the size and/or shaper of the cargo volume. Carriers as described herein may be configured to receive a variety of different articles, including trays and pouches, and the articles may be loaded into the carrier in a nested or overlapping manner.