Abstract: A microwave heating system includes: a power supply; a first semiconductor module configured to receive power from the power supply and to generate a first microwave; a second semiconductor module configured to receive power from the power supply and to generate a second microwave; a heating chamber that is configured to accommodate an object at an inside of the heating chamber and that allows transmission of the first microwave and the second microwave to the inside of the heating chamber; and a control unit. The control unit is configured to control operation of each of the first semiconductor module and the second semiconductor module, and to control at least one of a frequency, a phase, or a magnitude of each of the first microwave and the second microwave to increase a heating uniformity of the object.

Abstract: Disclosed herein are a structure for shielding electromagnetic waves, a door and a cooking appliance having the same. The structure for shielding electromagnetic waves includes a choke seal structure having a bottom face extended from a side wall portion formed at a periphery of a door in a plane direction defined by the door, an inner side face extended from the bottom face in a thickness direction of the door, and a top face extended from the inner side face toward side wall portion, the choke seal structure having a length extending along the periphery of the door, a plurality of slots arranged in a longitudinal direction of the choke seal structure at a predetermined spacing and partitioning the choke seal structure into a plurality of chokes, and a connecting face connecting between the top faces of some of the plurality of chokes, each of which has a latch hole formed in its inner side face.

Abstract: The present disclosure relates a door and a cooking appliance with the same. The door includes a first choke part installed at the inner surface of the door panel, and disposed at a vertical outer side of the open window; a second choke part installed at the inner surface of the door panel and disposed at the lateral outer side of the open window, wherein the second choke part is disposed between the open window and the connection mechanism; and a cover frame installed at the inner surface of the door panel, configured to accommodate the connection mechanism inside the cover frame and form side walls at the vertical outer side of the first choke part and the lateral outer side of the second choke part.

Abstract: A magnetron includes a yoke, an upper magnet, an upper pole piece located at a lower side of the upper magnet, a fifth-harmonic-frequency choke located at an upper side of the upper pole piece, a third-harmonic-frequency at a lower side of the fifth-harmonic-frequency choke, a ceramic part located at an upper end of the fifth-harmonic-frequency choke and configured to output an electromagnetic wave including a plurality of frequencies, a fourth-harmonic-frequency choke that is bent inward from the ceramic part and that is welded to an upper end of the ceramic part, and a second-harmonic-frequency choke that is welded to the fourth-harmonic-frequency choke and that extends upward and downward along a heightwise direction. The third-harmonic-frequency choke, fifth-harmonic-frequency choke, and second-harmonic-frequency choke are configured to block harmonic frequencies of the electromagnetic wave.

Abstract: A microwave heating system includes: a power supply; a first semiconductor module configured to receive power from the power supply and to generate a first microwave; a second semiconductor module configured to receive power from the power supply and to generate a second microwave; a heating chamber that is configured to accommodate an object at an inside of the heating chamber and that allows transmission of the first microwave and the second microwave to the inside of the heating chamber; and a control unit. The control unit is configured to control operation of each of the first semiconductor module and the second semiconductor module, and to control at least one of a frequency, a phase, or a magnitude of each of the first microwave and the second microwave to increase a heating uniformity of the object.

Abstract: A magnetron includes a yoke, an upper magnet, an upper pole piece located at a lower side of the upper magnet, a fifth-harmonic-frequency choke located at an upper side of the upper pole piece, a third-harmonic-frequency at a lower side of the fifth-harmonic-frequency choke, a ceramic part located at an upper end of the fifth-harmonic-frequency choke and configured to output an electromagnetic wave including a plurality of frequencies, a fourth-harmonic-frequency choke that is bent inward from the ceramic part and that is welded to an upper end of the ceramic part, and a second-harmonic-frequency choke that is welded to the fourth-harmonic-frequency choke and that extends upward and downward along a heightwise direction. The third-harmonic-frequency choke, fifth-harmonic-frequency choke, and second-harmonic-frequency choke are configured to block harmonic frequencies of the electromagnetic wave.

Abstract: Disclosed herein are a structure for shielding electromagnetic waves, a door and a cooking appliance having the same. The structure for shielding electromagnetic waves includes a choke seal structure having a bottom face extended from a side wall portion formed at a periphery of a door in a plane direction defined by the door, an inner side face extended from the bottom face in a thickness direction of the door, and a top face extended from the inner side face toward side wall portion, the choke seal structure having a length extending along the periphery of the door, a plurality of slots arranged in a longitudinal direction of the choke seal structure at a predetermined spacing and partitioning the choke seal structure into a plurality of chokes, and a connecting face connecting between the top faces of some of the plurality of chokes, each of which has a latch hole formed in its inner side face.

Abstract: The present disclosure relates a door and a cooking appliance with the same. The door includes a first choke part installed at the inner surface of the door panel, and disposed at a vertical outer side of the open window; a second choke part installed at the inner surface of the door panel and disposed at the lateral outer side of the open window, wherein the second choke part is disposed between the open window and the connection mechanism; and a cover frame installed at the inner surface of the door panel, configured to accommodate the connection mechanism inside the cover frame and form side walls at the vertical outer side of the first choke part and the lateral outer side of the second choke part.

Abstract: Provided herein are a cooking apparatus. The cooking apparatus includes a cavity, and a microwave generator to generate and output microwaves of a plurality of frequencies to heat an object within the cavity, wherein the microwave generator includes a controller to calculate heating efficiencies based on microwaves reflected by the inside of the cavity from among the output microwaves and to calculate heating modes consisting of microwaves for heating, during a scanning session and to control the heating modes so as to achieve the equal heating time during a heating session. Thereby, the object within the cavity is uniformly heated.

Abstract: Provided herein is a cooking apparatus. The cooking apparatus includes a plate forming a cavity, a microwave transmission line to transmit microwaves to the inside of the cavity, and a first metal part connected to one end of the microwave transmission line and extended in one direction so as to be parallel with the plate. Thereby, an antenna having improved efficiency is provided.

Abstract: A cooking appliance employing microwaves is provided. The cooking appliance employing microwaves includes a first microwave generating unit for generating and outputting a plurality of microwaves so as to heat an object in a cavity; and a second microwave generating unit for generating and outputting microwaves differing from those of the first microwave generating unit, so as to heat the object in the cavity. In this way, operating efficiency can be improved.

Abstract: A cooking apparatus using microwaves may include a microwave generator that generates and outputs a plurality of microwaves to heat an object in a cavity, and a controller that calculates heating efficiency of each of the plurality of microwaves based on the microwaves reflected from the cavity, and then sets heating time of each of the microwaves during a heating period of time according to the calculated heating efficiency.

Abstract: Provided herein is a cooking apparatus. The cooking apparatus includes a plate forming a cavity, a microwave transmission line to transmit microwaves to the inside of the cavity, and a first metal part connected to one end of the microwave transmission line and extended in one direction so as to be parallel with the plate. Thereby, an antenna having improved efficiency is provided.

Abstract: Provided herein are a cooking apparatus and an operating method thereof. The cooking apparatus includes a microwave generator to generate and output microwaves of a plurality of frequencies to heat an object within a cavity, a resonance mode conversion unit to convert a resonance mode by varying at least one of progressing direction, power or frequency of the microwaves output to the inside of the cavity, and a controller to operate the resonance mode conversion unit, if the number of frequencies of microwaves, the heating efficiencies of which are more than a reference heating efficiency, is below a reference value, based on heating efficiencies calculated according to microwaves reflected by the inside of the cavity from among the output microwaves. Thereby, operating efficiency of the cooking apparatus is improved.

Abstract: Provided herein are a cooking apparatus. The cooking apparatus includes a cavity, and a microwave generator to generate and output microwaves of a plurality of frequencies to heat an object within the cavity, wherein the microwave generator includes a controller to calculate heating efficiencies based on microwaves reflected by the inside of the cavity from among the output microwaves and to calculate heating modes consisting of microwaves for heating, during a scanning session and to control the heating modes so as to achieve the equal heating time during a heating session. Thereby, the object within the cavity is uniformly heated.

Abstract: The prevent invention relates to a cooking appliance employing microwaves. The cooking appliance employing microwaves according to the present invention comprises: a first microwave generating unit for generating and outputting a plurality of microwaves so as to heat an object in a cavity; and a second microwave generating unit for generating and outputting microwaves differing from those of the first microwave generating unit, so as to heat the object in the cavity. In this way, operating efficiency can be improved.

Abstract: A cooking device includes a cooking chamber; a first deodorization region along which air from the cooking chamber flows and in which a plasma discharge is generated for removing odor-producing materials generated in the cooking chamber from the air; and a bypass region along which air from the cooking chamber flows to bypass the first deodorization region.

Abstract: A microwave cooker comprises a body having a cooking chamber therein, the cooking chamber having one opened side, a microwave source disposed at the body for supplying microwave to the cooking chamber, a door coupled to the body for opening and closing the cooking chamber, and a multi-stage choke seal formed at the door and having different resonant frequencies and different LC resonant circuits for preventing the microwave from being leaked between the body and the door.

Abstract: A cooking device includes a cooking chamber; a first deodorization region along which air from the cooking chamber flows and in which a plasma discharge is generated for removing odor-producing materials generated in the cooking chamber from the air; and a bypass region along which air from the cooking chamber flows to bypass the first deodorization region.

Abstract: A heating apparatus using an electromagnetic wave is disclosed, by which cut-of performance of an electromagnetic wave is enhanced by increasing an electromagnetic wave absorption bandwidth having cut-off performance below ?70 dB. The present invention includes a door provided to an open front side of a body to be opened/closed and a choke filter having a panel type choke part arranged by at least one row each along an edge of the door and a filter part arranged by at least one row each along an edge of the choke part and having a plurality of slots, wherein a prescribed choke part is provided to a most inner side among rows of the choke and filter part.