Abstract: The present invention relates to a device for preventing microwave leakage for a microwave oven. The present invention comprises a cavity assembly formed with an opening portion through which heating energy generated in an energy generating means is supplied into a cooking chamber provided within the cavity assembly; a cover provided on a side of the cavity assembly to cover the opening portion; and a choke member provided between the cavity assembly and the cover to prevent microwave supplied into the cooking chamber from leaking through a gap between the cavity assembly and the cover. According to the present invention, there is an advantage in that microwave is effectively prevented from leaking through a gap, which is formed when installing a heating means for providing a heating source in addition to the microwave.

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, a choke filter having a panel type choke part arranged by at least one or more rows along an edge of the door and a filter part arranged by at least one or more rows along the choke and having a plurality of slots wherein a prescribed choke part is provided to a most inner side, a glass panel attached to an inner lateral side of the door and the choke filter, and a flange part provided to an external end portion of the door along the edge of the door to lie in a same level with an inner lateral side of the glass panel.

Abstract: A microwave oven door, and more particularly, an apparatus for shielding electromagnetic wave that compensates for the length of slots formed in an end of an oven door in order to improve the shielding ability capable of preventing the leakage of electromagnetic wave from the cavity. In the apparatus, a choke structure includes a choke base connected with an inner portion of the oven door, a choke inner side portion bent perpendicularly from the choke base and a choke top bent from the choke inner side portion to contact a front circumferential portion of an oven cavity. Slots are formed in the choke top and the choke inner side portion at a predetermined interval. Each slot is extended from a distal end of the choke top to a predetermined point of the choke inner side portion. The predetermined point is distanced the same as or smaller than the half of the width of the choke inner side portion from a joint between the choke top and the choke inner side portion.

Abstract: A microwave oven including a cabinet defining a cooking chamber therein, and a door coupled to the cabinet to open and close the cooking chamber. The door includes a door frame forming an appearance of the door, a shielding plate installed in the door frame to prevent high-frequency electromagnetic waves from radiating from a small gap between the door and the cabinet, a choke member provided at a peripheral edge of the shielding plate and having a high-frequency choke groove, a cover to cover the high-frequency choke groove, and a retaining member provided at the cover to elastically support the choke member. When the cover is attached to the choke member, an end of the choke member is supported on an inner rib section of the cover via the retaining member, thus reducing deformation of the choke member.

Abstract: A door of a microwave oven comprising: a door panel which is installed on a front surface of a casing having a cavity corresponding to a cooking space of food to be opened and closed; a door frame which is combined with the door panel to be located at a front of the cavity; a choke cover which is inserted in the door frame, for covering a choke seal; and a frame subsidiary plate which is positioned to opposed to the choke cover and is combined with the door frame to remove a gap formed between the choke cover and a lateral surface of the door frame.

Abstract: A door of a microwave oven comprising: a door panel which is installed on a front surface of a casing having a cavity corresponding to a cooking space of food to be opened and closed; a door frame which is combined with the door panel to be located at a front of the cavity; a choke cover which is inserted in the door frame, for covering a choke seal; and a frame subsidiary plate which is positioned to opposed to the choke cover and is combined with the door frame to remove a gap formed between the choke cover and a lateral surface of the door frame.

Abstract: A door of a microwave oven includes an outer cover defining an exterior of the door, a door frame coupled to the outer cover and forming a choke recess for preventing microwave leakage, and a bracket including two parallel walls surrounding the choke recess and fixing the door frame to the outer cover. One of the parallel walls of the bracket contacts a wall of the door frame forming a front surface of the choke recess so as to prevent the choke recess from being deformed when the door is being assembled.

Abstract: A microwave choke apparatus for a microwave oven includes an inner door panel having a plurality of multi-pronged and double-stepped portions extended outwardly therefrom, between which multi-pronged and double-stepped toothed portions there are alternately formed a plurality of slots, an outer door panel having an upwardly bent portion at an outer periphery thereof, and a choke cover for closing an opening formed between an inner side of the bent portion of the outer door panel and respective outer flat portions of the multi-pronged and double-stepped toothed portions of the inner door panel. The apparatus effectively prevents microwaves from leaking externally through a gap between a door frame and a front panel of the microwave oven by broadening a bandwidth of a choke resonant frequency of a choke channel.

Abstract: A door for preventing leakage of electromagnetic wave of a microwave oven includes: a front panel forming a front surface of a door; a first contact surface expanded from the circumference of the front panel and recessed forward a cavity of the microwave oven so as to contact an entrance of the cavity; a door frame portion expanded from the circumference of the first contact surface and proceeding to the front surface of the door so as to form a frame of the door; a second contact surface expanded from the circumference of the door frame portion and recessed toward the cavity so as to contact a frame of the cavity entrance; a choke cavity formed between the door frame and the second contact surface; and a slit formed on the circumference of the door frame in a predetermined interval and expanded into the choke cavity in a predetermined length. Thus, leakage of the electromagnetic wave can be prevented due to the slit shape of a predetermined period.

Abstract: A device for shielding a leakage of high frequency waves in a microwave oven, capable of effectively shielding high frequency waves leaked without using any ferrite rubber and reducing the thickness of a door of the microwave oven to achieve a compactness of the microwave oven. The device includes an outer panel, an inner panel fixedly mounted to the outer panel to define a choke channel therebetween, the inner panel having a first bent portion and a second bent portion, a pair of capacitive seals provided at portions of the inner panel facing a front panel of the microwave oven, a plurality of slits formed at the first bent portion at intervals and adapted to attenuate high frequency waves advancing in a X-axis direction, and a choke cover fitted in the second bent portion and adapted to close an opened portion of the choke channel.