Class / Patent application number | Description | Number of patent applications / Date published |
219715000 | Power switching | 17 |
20090134153 | POWER SUPPLY FOR A HIGH FREQUENCY HEATING - It is an object of the present invention to provide a power supply for a high frequency heating that suppresses an over-shoot of an input current generated under an unstable state immediately after a magnetron begins oscillating. | 05-28-2009 |
20090206073 | INVERTER CONTROLLER AND HIGH-FREQUENCY DIELECTRIC HEATING APPARATUS - Occurrence of a defect of the moding phenomenon, etc., accompanying rise in output of a magnetron after power down control is prevented and the reliability of a high-voltage dielectric heating apparatus is further improved. After power down control, when the temperature of a thermistor T | 08-20-2009 |
20100140260 | Microwave oven - Disclosed is a microwave oven capable of preventing leakage of microwaves by using a plurality of primary switches, a plurality of secondary switches and a plurality of monitor switches. The primary switches are serially connected with each other, the secondary switches are connected in parallel with each other, and the monitor switches are connected in parallel with each other, so that the microwave oven does not operate if a door of the microwave oven is not completely closed. | 06-10-2010 |
20130008895 | DOUBLE LINE BREAK - A system and methods are disclosed for providing a double line break having a secondary power break to function components in a microwave oven. The double line break includes at least two power switches, such as relay devices that provide back-up protection in case one switch fails, or a primary interlock switch corresponding to a door of the oven. | 01-10-2013 |
20130062341 | MICROWAVE PROCESSING APPARATUS AND CONTROL METHOD THEREOF - A microwave processing apparatus includes: a processing chamber; a microwave introducing unit for generating microwaves and introducing the microwaves into the chamber; and a control unit for controlling the microwave introducing unit. The microwave introducing unit has microwave sources for generating the microwaves and transmission lines for transmitting the microwaves into the chamber and introduces parts of the microwaves into the chamber simultaneously, and the control unit switches a first state of introducing said parts of the microwaves into the chamber to a second state of generating a microwave by one of the microwave sources and introducing into the chamber. | 03-14-2013 |
20140361009 | MICROWAVE HEATING DEVICE - A microwave heating device mountable to an electric device, includes: a commercial power supply; an AC/DC converter which outputs a plurality of DC voltages according to power supplied from the commercial power supply; a controller which receives power from the AC/DC converter and totally controls the electric device; a microwave processing device using a compound semiconductor which receives a plurality of outputs of the AC/DC converter and outputs a microwave; and a plurality of loads connected between, of the DC voltages output from the AC/DC converter, a predetermined Vd voltage and ground through a plurality of contacts. The loads form a group of electric components in the electric device. The controller controls power supply to the loads, and controls on/off of the contacts to drive the loads by the Vd voltage regardless of the voltage of the commercial power supply. | 12-11-2014 |
20160183331 | System and Method for Adjusting Power of Inverter of Microwave Oven, and Microwave Oven | 06-23-2016 |
219716000 | With detector | 4 |
20090014442 | MAGNETRON DRIVING POWER SOURCE - A magnetron driving power source can detect the abnormal condition during no-load running with low cost and space saving. The magnetron driving power source includes a high voltage transformer ( | 01-15-2009 |
20090065502 | POWER CONTROL METHOD OF HIGH FREQUENCY DIELECTRIC HEATING AND APPARATUS THEREOF - The object of the invention is not only to simplify the structure of a high frequency dielectric heating power control apparatus and reduce the size of the apparatus but also to eliminate the need for control and design corresponding to the kind of a magnetron and thus enhance the running efficiency of the apparatus. | 03-12-2009 |
20100176121 | MICROWAVE PROCESSING APPARATUS - A microwave oven includes a microwave generation device and a case. Three antennas are provided in the case. The two antennas are opposite each other along a horizontal direction. In the microwave generation device, a power distributor almost equally distributes a microwave generated by a microwave generator among phase variators. Each of the phase variators adjusts the phase of the fed microwave. This causes a phase difference between microwaves respectively radiated from the opposite two antennas to change. The microwaves are respectively radiated from the antennas. | 07-15-2010 |
20140042155 | PLASMA PROCESSING APPARATUS AND MICROWAVE OUTPUT DEVICE - A plasma processing apparatus includes: a high voltage power supply for supplying a high voltage power to a magnetron; and a detector for detecting a microwave output from the magnetron, wherein based on a result of comparing a signal, which is obtained by adding an output from the detector to an AC component of a current detected from an output of the high voltage power supply, with a setting value of the output of the high voltage power supply, the output of the high voltage power supply is adjusted. | 02-13-2014 |
219717000 | Plural power supplies | 2 |
20080217327 | Portable cooking and heating device - A portable cooking and heating device includes a housing and an inner chamber for receiving at least one of heatable products, heat, and microwave energy, such inner chamber being located within the housing at a predetermined location therein adjacent an outer periphery thereof. An access means provides access to such inner chamber. A mechanism is disposed within the housing for supplying at least one of heat and microwave energy to at least one of the inner chamber and such heatable products such that such heatable products are at least one of at least partially cooked and at least partially heated. A power source is operably connected to such mechanism for supplying at least one of heat and microwave energy for supplying power thereto. A handle member for carrying the device is operably connected to a predetermined location on an outer surface of the housing. | 09-11-2008 |
20100181307 | POWER SUPPLY FOR RADIO FREQUENCY HEATING APPARATUS - An RF generator power supply comprises a first switched mode power supply (SMPS) connected in series to a second SMPS by a DC bus. A capacitor is arranged between the outputs of the first SMPS and inputs of the second SMPS to act as a smoothing capacitor for the first SMPS and to supply pulse energy to the second SMPS. The second SMPS has an output connected to an input of a step-up transformer and an output of the step-up transformer is connected to an input of a rectifier connectable to the RF generator. An input of the first SMPS is connectable to a prime power supply to maintain a high power factor with low harmonic content while setting an operating voltage and peak current level for the RF generator. The second SMPS is arranged to feed the step-up transformer and is arranged to operate with a variable duty cycle and/or variable frequency to provide average power control of the RF generator. The second SMPS is rapidly switched off on detection of a power surge through the RF generator. | 07-22-2010 |
219718000 | Having duty cycle | 4 |
20080283521 | High-speed cooking oven with optimized cooking efficiency - The present invention is directed to improving the conventional high-speed cooking oven based on a combination of hot air impingement and microwave heating by providing a time-dependent spatial variation in the net air impingement and/or net microwave energy applied to the food product in the oven. This is aimed at optimizing heat transfer and microwave efficiencies in a high-speed cooking oven, thereby enabling the oven to deliver an optimal cooking efficiency in comparison to the conventional high-speed cooking oven. In addition, under the present invention, the cooking efficiency may be further optimized by dimensioning the nozzles for hot air impingement to tighten impingement plumes, subject to the space constraint of the oven's cooking chamber, and dimensioning the cooking chamber of the oven in integer multiples of the wavelength of the microwave energy to match the microwave load. With the optimized cooking efficiency provided by the present invention, the high speed cooking technology may now be extended to ovens operating on a power supply based on a voltage less than 220 volts, preferably between 110 and 125 volts, with more productive results, so that the high-speed cooking technology may find a wider applicability and customer base. | 11-20-2008 |
20120061384 | MICROWAVE IRRADIATION DEVICE AND MICROWAVE IRRADIATION METHOD - A microwave irradiation device includes a chamber for accommodating an object to be processed; a plurality of magnetrons for generating microwaves and irradiating the microwaves to the object to be processed in the chamber; and a power supply unit for supplying a pulse-shaped voltage to each magnetron. The power supply unit supplies the pulse-shaped voltage to the magnetrons while preventing temporal overlap of voltage pulses of the pulse-shaped voltage supplied to the respective magnetrons with each other. | 03-15-2012 |
20120160840 | WOOD HEATER WITH ALTERNATING MICROWAVE LAUNCH LOCATIONS AND ENHANCED HEATING CYCLES - An optimized system and process for heating wood using a microwave heater. The optimized system/process directs microwave energy towards different regions of the wood at different times during heating. In certain situations, microwave energy is introduced into the heater using microwave launchers and the system includes one or more microwave switches that control distribution of microwave energy to the microwave launchers so that two adjacent and/or opposing microwave launchers do not simultaneously introduce microwave energy into the heater. The optimized heating process also includes heating wood using a plurality of sequential heating cycles carried out at different conditions. For example, at least one of the heating cycles can be carried out at a lower input rate of microwave energy and/or at a lower pressure than one of the previous heating cycles. | 06-28-2012 |
20140263291 | SYSTEM AND METHOD FOR POWERING DUAL MAGNETRONS USING A DUAL POWER SUPPLY - A system and method for powering a dual magnetron with a dual power supply is disclosed. A first power supply supplies a first voltage to a first magnetron. A second power supply supplies a second voltage to a second magnetron. A balancer circuit controls a drive current for altering a magnetic field of the first magnetron and a magnetic field of the second magnetron to maintain the first voltage and the second voltage at a substantially equal voltage. | 09-18-2014 |