A convection microwave oven (2) includes a moisture convection system (10) for providing moisture into the cooking cavity (6) of the microwave oven (2) to help keep heated and/or cooked items moist. The moisture convection system (10) includes a removable water tank (40) that provides water for the moisture convection system (10). The moisture convection system (10) includes a pump (42) that pumps water to a nozzle (46) that sprays water onto the convection heater (24) of the microwave oven (2) to create evaporate (E) that is moved into the cooking cavity (6) of the microwave oven (2) by the convection fan wheel (22).

A system is configured to perform an operation that results in increasing a thermal energy of a load. The system includes a radio frequency signal source configured to supply a radio frequency signal, an electrode coupled to the radio frequency signal source, and a variable impedance network that includes at least one variable passive component. The variable impedance network is coupled between the radio frequency signal source and the electrode. The system includes a controller configured to determine an operation duration based upon a configuration of the variable impedance network, and to cause the radio frequency signal source to supply the radio frequency signal for the operation duration.

A method and a device for drying an explosive, wherein the explosive contains moisture and microwave radiation causes the explosive to expel the moisture contained in the explosive. Provided is a drying chamber having magnetrons that exert the required microwave radiation on the explosive to be dried and thereby heat the explosive. During heating, the moisture in the explosive is then expelled.

A cooking appliance includes a body having an interior to receive product to be cooked, the body having an opening via which the product can be moved relative to the interior; a pilot mounted within the body; and a door attached to the body to close the opening. The door includes a first latch mounted to the door and a second latch mounted to the door and independently reciprocable relative to the first latch between a first position and a second position, wherein the second latch is urged to move towards the second position such that, as the door is moved to close the opening, the second latch is received within the body and is deflected towards the first position by the pilot until a portion of the second latch clears the pilot and is urged to move towards the second position to come to rest behind the pilot.

A portable microwave oven that includes an outer housing comprising a plurality of outer walls, wherein one outer wall includes a vent opening; an inner structure comprising a plurality of inner walls that define a heating chamber; a door rotatable relative to the outer housing to access the heating chamber; a heating element configured to heat the heating chamber; and a heat handling system comprising: an intake duct fluidly connecting the vent opening to an electronics chamber housing the heating element; an exhaust duct fluidly connecting the electronics chamber to the vent opening; and at least one fan that is configured to draw air in through the intake duct or push air out through the exhaust duct; wherein the microwave oven is operable in a first orientation, in which the door is forward facing, and a second orientation, in which the door is upward facing.

The present invention relates to a method for heating or cooking a frozen food product with a susceptor in a solid state microwave oven wherein the method comprises a first heating step at a low absorption frequency and a second heating step at a high absorption frequency.

An interlock switch structure and a microwave oven are disclosed. The interlock switch structure includes a substrate, a sliding latch, a tactile disk member, a door hook, a first elastic member, and multiple micro-switches. The substrate is provided with a chute structure, the sliding latch slidably matches with a chute of the chute structure, the sliding latch is provided with a sliding surface to match with the door hook. The tactile disk member is pivotally communicated with the substrate, the micro-switch is located on a periphery of the tactile disk member, and contact points of the micro-switches are toward the tactile disk member. The tactile disk member is provided with a seesaw to match with the door hook; a circumferential surface of the tactile disk member is provided with a rotating surface to match with the sliding latch.

A microwave cooking appliance performs controlled beverage warming using a temperature sensor to capture a thermal image of a beverage in a cooking cavity. One or more sensing locations within the thermal image that are suitable for determining the temperature of the beverage are determined in part by ordering temperature readings from the thermal image by temperature to determine a temperature function and then determining locations in the thermal image that correspond to the beverage by calculating a derivative function over at least a portion of the temperature function.

A method of heating a steel blank using a microwave heating furnace system for the hot stamping process includes providing a steel blank having a thickness ranging from 1 mm to 1.8 mm, pre-heating the streel blank to an initial temperature in a pre-heat chamber of the microwave heating furnace system, and directly heating the steel blank using microwave energy in a main heating zone of the microwave heating furnace system from the initial temperature to a temperature greater than 850 C. in less than 240 seconds.

A carburized La.sub.2O.sub.3 and Lu.sub.2O.sub.3 co-doped Mo filament cathode is made from lanthanum oxide (La.sub.2O.sub.3) and lutetium oxide (Lu.sub.2O.sub.3) doped molybdenum (Mo) powders, the lanthanum oxide (La.sub.2O.sub.3) and lutetium oxide (Lu.sub.2O.sub.3) doped molybdenum (Mo) powders contain La.sub.2O.sub.3, Lu.sub.2O.sub.3 and Mo with the total concentration of La.sub.2O.sub.3 and Lu.sub.2O.sub.3 being 2.0-5.0 wt. % and the rest being Mo.