6181results about "Microwave heating" patented technology

A container has a patterned susceptor region in the bottom, a fold region between the bottom and the sidewall of the container, a sidewall region, and a flange region that forms a flange or lip of the container. The patterned susceptor region includes arrangements of microwave-interactive features disposed generally along respective close plane curves, which reduces overheating and increases the filling temperature of the food product. The fold region contains microwave transparent features that minimize de-lamination of the container in the folded region, and also create a generally transmissive area in the vicinity of the heel of the food product to improve the cooking thereof. The sidewall region shields the periphery of the food product so that it is not overcooked while promoting an appropriate degree of pie dough shell browning. The flange area is transmissive to promote an appropriate degree of cooking of the food product crust.

A coated susceptor of electromagnetic energy for chemical processing made of a matrix material that surrounds a non-matrix material that is made from a material that is different from the matrix material, in which the matrix material is constructed of material having lower dielectric losses compared to the non-matrix material, the non-matrix material initially absorbs electromagnetic energy applied to the electromagnetic susceptor to a greater extent than the matrix material, the non-matrix material produces subsequent heat in the matrix material, and the surface of the susceptor is coated with a material that interacts with applied electromagnetic energy of at least one frequency and initially absorbs electromagnetic energy and produces heat.

The combination of insulating material with microwave interactive food packaging for enhanced cooking properties is disclosed. An insulating microwave packaging material (200) and a method of making the same are also disclosed. In one embodiment, the insulating microwave packaging material (200) is formed by bonding a microwave interactive material substrate (205) that creates sensible heat upon exposure to microwave energy to a second substrate (210) along bond lines (212) arranged in a pattern to form closed cells (214). Upon impingement of the insulating microwave packaging material (200) by microwave energy in a microwave oven, the closed cells (214) expand to form insulating pockets (216). One side of the insulating pocket (216) bulges and lofts above the opposite side. When a food product is situated on the insulating microwave packaging material (200), the insulating pockets (216) insulate the food product from the microwave oven environment.

The invention relates to a microwave waveguide element for matching a standard waveguide input port to an enlarged waveguide output port. In the waveguide element, a plurality of intermediate waveguide segments is cascaded in the propagation direction of the microwave energy to first split the waveguide element into two symmetrical waveguide branches and then combine the branches at the output port. Thus, the width of the waveguide element is gradually enlarged and the input port is matched to the output port. The intermediate waveguide segments are preferably dimensioned such that respective characteristic impedances are approximately matched with each other for the fundamental mode.

A microwave interactive insulating material is provided.

An improved oven for use in a residence is described. The oven includes a cooking chamber, a programmable controller for executing program instructions, memory media for recording executable program instructions, and at least one controllable cooking system under control of the programmable controller, which provides a data-processing-controlled high speed cooking process which may be applied to food placed in the oven chamber. A plurality of cooking programs are recorded in the memory media of the oven. These define a plurality of high speed cooking routines available for use with the oven. A gateway server is communicatively coupled to the programmable controller. It manages the communication of digital content which is at least in-part related to operation and utilization of the improved oven. A broadband communication channel extends from a source of digital content, which is external to the residence, to the residence. The broadband communication channel delivers particular digital content related to the oven through the gateway server for distribution within the residence, including distribution to the programmable controller of the oven in order to facilitate cooking operations utilizing the oven.

In a method for synthesizing polymeric microstructures, a monomer stream is flowed, at a selected flow rate, through a fluidic channel. At least one shaped pulse of illumination is projected to the monomer stream, defining in the monomer stream a shape of at least one microstructure corresponding to the illumination pulse shape while polymerizing that microstructure shape in the monomer stream by the illumination pulse.

A control system for electrosurgical apparatus in which the energy delivery profile of both RF EM radiation and microwave EM radiation delivered to a probe is set based on sampled voltage and current information of RF energy conveyed to the probe and / or sampled forward and reflected power information for the microwave energy conveyed to and from the probe. The energy delivery profile for the RF EM radiation is for tissue cutting (without requiring a sharp blade) and the energy delivery profile for the microwave EM radiation is for haemostasis or sealing or coagulation or ablation of tissue. The RF EM radiation and microwave EM radiation may be applied separately or simultaneously.

An apparatus for molding balloon catheters is disclosed. The balloon may be molded by providing a polymeric tube within a mold having an interior cavity in the shape of the desired balloon. Microwave energy, which may be generated by a gyrotron, may then be directed toward the mold, to heat the polymeric material without heating the mold. Once heated, pressurized fluid may be injected into the tube to blow the polymeric material against the interior cavity whereupon the material can cool to form the balloon or can be further heatset by additional microwave energy and be cooled to form the balloon.

Apparatus (10) for treating skin tissue with microwave radiation (e.g. having a frequency of 1 GHz to 300 GHz) is disclosed in which an array of radiating elements (18), e.g. patch antennas are arranged on a flexible treating surface (16) for locating over and conforming with a region of skin tissue (24) to be treated. The radiating elements (18) receive microwave energy from a feed structure and are configured to emit outwardly a electromagnetic field which permits the region of skin to a substantially uniform penetration depth. Each radiating element (18) may have an independently controllable power supply to permit relative adjustment of the field across the treatment surface. Each radiating element may have a monitoring unit to allow adjust based on detected reflected power. Each independently controllable power supply may include a dynamic impedance matching unit.

A cooking appliance includes a controller for establishing a plurality of operating modes for heating an oven cavity. Specifically, the controller establishes one of a pre-heat mode, a ready mode, a first low power mode and a second low power mode for controlling a temperature of the oven cavity. Upon selecting a temperature for the oven cavity, the controller operates a radiant heating device, a convection fan and a convection heating device at full power to establish the selected temperature. After the selected temperature is achieved, the controller switches to a ready mode and reduces heat output of both the radiant heating device and the convection heating device, while also reducing fan speed. After respective periods of time in which a door of the appliance is not opened, the controller switches to first and second low power modes to conserve energy.

A bleed gas clean-up system for a re-circulating oven.

An oven, is provided that includes multiple heat transfer means, including convection and microwave heat transfer means. The oven includes a cooking chamber, a blower and at least a shelf disposed within the cooking chamber. The shelf is designed to act as a food support as well as a conduit through which heated air passes into the cooking chamber. The microwave heating means comprises a microwave source and wave guide through which microwaves travel. The wave guide includes a plurality of openings through which microwaves can pass into said cooking chamber. In the preferred embodiment, the openings in the wave guide are positioned to correspond with the predetermined minima or maxima for the microwave wavelength propagating within the wave guide. An electric heating element may also be disposed within the cooking chamber to provide an alternative heating source.

A microwave oven and a method for heating a load which is placed therein. According to the invention a predetermined mode in the cavity of a microwave oven is fed by means of an associated feeding port which is arranged to feed essentially the intended mode only, the feeding of a mode other than the intended, predetermined mode being essentially prevented.

A temperature controlled heatable object is provided in which a temperature sensor is connected to a Radio Frequency Identification (RFID) tag. The RFID tag is located within the handle of the object, and the temperature sensor is placed in contact with the object. In a first embodiment of the invention, the temperature sensor is partially imbedded within the object via a notch located in the side of the object. In a second embodiment of the invention, a temperature sensor is imbedded within a tunnel drilled within the base of the object. In a third embodiment, a temperature sensor is imbedded between the bottom of the object and a slab attached to the bottom of the object. The sensor can be located in a slot formed in either the slab or the bottom or the object. Handles and receivers for mounting the handles to the temperature controllable objects are also provided.

A combination cooking appliance controls a radiant heating element provided in an oven cavity and a convection heating element provided in an air plenum with a regulating system which receives signals from multiple temperature sensors. More specifically, the appliance includes a first temperature sensor provided in an air return plenum portion for controlling the radiant heating element and a second temperature sensor arranged in a discharge air plenum portion, preferably downstream of a catalyst, for controlling the convection heating element. The heating elements are independently controlled based on the sensed temperatures to establish a desired oven cavity temperature, while accommodating for temperature fluctuations due to the incoming fresh air stream.

Devices, systems, and methods for processing sample materials. The sample materials may be located in a plurality of process chambers in the device, which is rotated during heating of the sample materials.