Abstract: The object of this invention is to provide a built-in microwave oven, installed in kitchen furniture as an integral pan of the furniture. In the microwave oven of this invention, a suction grill (10) and an exhaust grill (20) are provided on me front wall of the external casing, with a side air passage connecting the suction grill (10) to the exhaust grill (20). An exhaust fan (22) is provided in the side air passage at a front portion around the suction grill, while a partition wall (60) is longitudinally installed at a position in back of the exhaust fan (22). A PCB support bracket (70), seating a PCB thereon, is installed within the rear passage defined in back of the partition wall (60). In an operation of the microwave oven, the air discharged from the side air passage by the suction force of the exhaust fan (22) partially flows around the PCB support bracket (70) to cool the PCB prior to flowing through the side air passage to reach the exhaust grill (20).

Abstract: A cooking apparatus comprising a heatable component insulated by a heat insulating material, wherein the heat insulating material comprises a plurality of metal sheets that are spaced apart from each other by a separator.

Abstract: Disclosed is a microwave oven capable of cooking food according to an output mode in response to an output level of its magnetron, including a fan motor having a low-speed node and a high-speed node to receive power, and having a turning speed variable in response to a node connecting state; an output mode selecting part through which one of output modes is selected; a switching part having at least one switch for switching power applied to the low-speed node or high-speed node of the fan motor; and a control unit controlling the switching part in response to an output mode selected by the output mode selecting part, thus preventing its electrical components from being overheated.

Abstract: A heating apparatus of a microwave oven includes: an upper plate installed at an upper portion of a cooking chamber into which a cooking object is to be received, having a suction hole for sucking air inside the cooking chamber and a discharge hole for discharging air; a first heater installed at the discharge hole side of the upper plate, for generating convection heat; a second heater disposed in the same enclosure as that of the first heater, for generating radiant heat; and a ventilating fan installed at an upper portion of a region where the suction hole of the upper plate is formed, for circulating air inside the cooking chamber across the first and the second heaters.

Abstract: This invention provides a high-frequency heating apparatus for heating by using magnetron including an inverter power supply as a magnetron-driving power supply, a cooling fan, and an air guide. The cooling fan is inclined against the vertical direction of the power supply and fitted to the air guide. This structure increases the cooling effect of the power supply. Additionally, the power supply includes temperature sensors provided on semiconductor elements and control means for controlling the power supply and an operation of the heating apparatus according to the result of sensors. These sensors avoid breaking down of the power supply caused of overheating.

Abstract: A combination microwave ventilated hood cooking system including a microwave oven with a cooking cavity; a magnetron for generating microwaves located adjacent the cooking cavity; and cooling fan outside the cooking cavity. The cooking cavity including at least two trays of different shapes and a stirrer for dispersing microwaves in the cooking cavity. A guide is between the stirrer and the cooling fan such that the guide has a downward slope from the cooling fan to the stirrer. During operation of the microwave, the cooling fan creates an air current, which is directed to the stirrer by the guide and drives the stirrer to disperse microwaves in the cooking cavity and direct an air current to cool the magnetron.

Abstract: A method and a cooking appliance has a pyrolytic cleaning control in which multiple stages permit volatile residue to be incinerated before inducing air current flow that can complete the cleaning process throughout the oven housing. The oven combines cooking energy sources, including convection current heating and preferably, jet impingement heating, whose blowers are disabled during a first stage of pyrolytic cleaning to avoid uncontrolled ignitions within the appliance. The second stage of the pyrolytic cleaning process induces current flow to distribute pyrolytically heated air throughout the housing and complete the cleaning process in the apparatus.

Abstract: The present invention relates to a damper apparatus for a microwave oven by which the production cost and the reliability of the operation can be obtained by simplifying the structure of a damper apparatus for controlling the air flow supplied into the cavity of a microwave oven, which comprises an air duct for guiding a cooling air from the machinery compartment of the microwave oven into the cavity; a damper rotatably installed in the air duct for opening or closing the air flow in the air duct; a motor which includes a shaft directly connected to the damper to drive the damper; and a micro switch installed at one side of the air duct for detecting the opening and closing states of the damper by contacting one side of the damper.

Abstract: A hood apparatus for a ventilation-hooded microwave oven configured to prevent contamination of electric equipment within an electrical equipment installation chamber. An exhaust flow passage for discharging contaminated air generated from an oven range, which is installed below the ventilation-hooded microwave oven, is formed such that the contaminated air does not pass by the electric equipment installed in the electric equipment installation chamber. Further, a bottom plate is installed on a bottom surface of the electric equipment installation chamber in order to prevent the chamber from communicating with the exhaust airflow passage. Furthermore, contaminated air sucked from outside of the ventilation-hooded microwave oven flows only through a gap between an outer case and a cavity and then toward an exhaust motor.

Abstract: The present invention relates to a microwave oven. Though the present invention provides a system in a front surface thereof for air communication between inside and outside of the microwave oven, the number of components for the front surface is minimized. That is, vent grill parts 46 and 56 are formed as one unit with the door 40 and the control panel 50 of the microwave oven for covering vent holes 36 and 36′ in the front surface 34 of a main frame 30 from external view. Top ends of the vent grill parts 46 and 56 are opened for permitting inside and outside of the microwave oven to be in communication through the vent holes 36 and 36′. There may be a louver 48 in the vent grill parts 46 and 56 in correspondence to the vent holes 36 and 36′.

Abstract: The present invention relates to a microwave oven, and more particularly, to a device for cooling electric equipments of hooded microwave oven. The device comprises a ventilation motor assembly 40 mounted on the top of a cavity 20, for forming both a flow of air for a hood function and a flow of air for dissipating heat from the electric equipments; and a suction grill 50 through which outer air is sucked to the top of the cavity 20 by suction force of the ventilation motor assembly 40. The electric equipments are positioned in a flow of the air that is sucked through the suction grill 50 to the top of the cavity 20 and flows to the ventilation motor assembly 40. According to the present invention, since a flow of air for dissipating heat from the electric equipments is linearly formed, its cooling efficiency and the reliability of the electric equipments are enhanced.

Abstract: Structure of a ventilation motor assembly in a microwave oven including a ventilation motor having first and second shafts fitted in opposite directions, a sirocco fan interlocked with the first shaft for drawing air in a direction of the first shaft and discharging in a direction perpendicular to the first shaft, and a radial fan interlocked with the second shaft for drawing air in a direction perpendicular to the second shaft and discharging in a direction of the second shaft, thereby permitting to vary an air suction/discharge structure by forming air flows in left and right sides of the ventilation motor.

Abstract: The present invention relates to a microwave oven, and more particularly, to a structure of a microwave oven that has more enhanced operating efficiency and makes less noise by independently forming a flow of air for a hood function and a flow of air for cooling an electric equipment installation chamber and by mounting an exhaust filter only on one side of an air duct. The present invention utilizes a ventilation motor assembly 132 for forming the flow of air for the hood function and the flow of air for cooling the electric equipment installation chamber. In addition, the flow of air discharged from the ventilation motor assembly 132 is forced to flow toward the air duct 122 which has passages divided into a first duct portion 202 and a second duct portion 204. Moreover, among the duct portions 202, 204, an exhaust filter 122′ is installed only on the duct portion through which the flow of air for the hood function passes.

Abstract: An object of the present invention for solving the foregoing problems is to provide air drawing holes and lamp fitting structure of a microwave oven, which can reduce a production cost, and prolong a lifetime of the lamp owing to elimination of heat resistant tape fitted to the lighting window and minimized air duct.

Abstract: A microwave oven includes a hood unit including a hood motor, a magnetron, a transformer having primary and secondary coils, the transformer generating a high voltage in a turn ratio of the primary and secondary coils and supplying the generated high voltage to the magnetron, a hood unit driver for controlling an operation of the hood unit, power output switching means for controlling the level of a voltage to be supplied to the transformer, and a controller for controlling the power output switching means to control the level of the voltage to be supplied to the transformer according to a given operation mode of the hood unit. The power output level of the microwave oven is automatically controlled according to a given operation mode of the hood motor such that the sum of the oven power output and the hood motor power output is constant.

Abstract: Disclosed is a parts arrangement structure for a DC microwave oven which is formed by a combination of an upper panel, a lower panel and a rear panel, a space inside the DC microwave oven being divided into a device chamber in which a magnetron and an air guide are placed and a cooking chamber in which a rotating motor for rotating rollers and a turntable is placed, the DC microwave oven having a control panel which closes a front end of the device chamber. The parts arrangement structure comprises a high voltage transformer and an inverter circuit board mounted to the lower panel inside the device chamber; and at least one high voltage capacitor mounted to the lower panel below the cooking chamber.

Abstract: The present invention relates to a microwave oven. Though the present invention provides a system in a front surface thereof for air communication between inside and outside of the microwave oven, the number of components for the front surface is minimized. That is, vent grill parts 46 and 56 are formed as one unit with the door 40 and the control panel 50 of the microwave oven for covering vent holes 36 and 36′ in the front surface 34 of a main frame 30 from external view. Top ends of the vent grill parts 46 and 56 are opened for permitting inside and outside of the microwave oven to be in communication through the vent holes 36 and 36′. There may be a louver 48 in the vent grill parts 46 and 56 in correspondence to the vent holes 36 and 36′.

Abstract: A turntable drive mechanism in a cooking oven. A driver unit is arranged outside a cooking chamber for rotationally driving a turntable, and a magnetic coupling is arranged between a revolving shaft of the turntable and another revolving shaft of the driver unit. The magnetic coupling is composed of a first coupling member attached to the revolving shaft of the driver unit and having magnets arranged so as to provide a surrounding of the revolving shaft with magnetic poles of alternately different polarities, and a second coupling member attached to the revolving shaft of the turntable and having magnets arranged so as to provide a surrounding of the revolving shaft with magnetic poles of alternately different polarities. The first and second coupling members face each other with a non-magnetic wall portion defining the cooking chamber being sandwiched therebetween.

Abstract: A combination convection/microwave oven in which a food product is cooked by microwave energy and by a heated airflow provided by a thermal energy source and a blower. The oven is capable of cooking food in a microwave reflective pan. Microwave energy enters the oven below the pan and is guided to a spacing between the pan and oven sides and then reflected by the sides and top of the oven to the food product in the pan. The heated airflow is laminar with an upper layer and a lower layer. The pan is positioned at about the interface of the two layers so that the upper layer is incident on the food product and the lower layer is incident on the bottom of the pan.

Abstract: A heating apparatus of a microwave oven includes: a heater installed at an upper portion of a cooking chamber into which foodstuff is received, a ventilating fan installed at one side of the heater, for circulating air inside the cooking chamber to pass the heater; a panel having a suction hole installed at an upper portion of the cooking chamber, through which the air inside the cooking chamber is sucked into the ventilating fan, and a discharge hole, through which the air which has passed the heater is again supplied to the cooking chamber, and an air guide unit mounted at an upper side of the panel, for guiding an air flow from the ventilating fan to the heater.

Abstract: A heating apparatus of a microwave oven includes: an upper plate installed at an upper portion of a cooking chamber into which a cooking object is to be received, having a suction hole for sucking air inside the cooking chamber and a discharge hole for discharging air; a first heater installed at the discharge hole side of the upper plate, for generating a convection heat; a second heater disposed in the same space as that of the first heater, for generating a radiant heat; and a ventilating fan installed at an upper portion of a region where the suction hole of the upper plate is formed, for circulating air inside the cooking chamber through the first and the second heaters.

Abstract: Compact microwave clothes dryer and method in which the dryer is small enough to be placed on a countertop, and air is circulated past microwave generator and power supply components to the drying chamber to transfer heat from the components to clothes in the chamber to supplement the microwave drying.

Abstract: A wall-mounted microwave oven and a method for controlling the same, wherein the microwave oven and a hood unit are prevented from being operated at maximum power at the same time in the initial operation state. The microwave oven comprises a hood unit driver for controlling an operation of the hood unit, power output switching means for controlling the level of a voltage to be supplied to a transformer, and a controller for controlling the hood unit driver and power output switching means to prevent the hood unit and a magnetron from being operated at the maximum power at the same time in the initial operation state. In the initial operation state, the hood motor and microwave oven are prevented from being operated at the maximum power at the same time for a certain period of time. Then, the hood motor and microwave oven are normally operated at the maximum power after the lapse of the certain time period.

Abstract: The present invention relates to a convection device of a microwave oven comprises a heater chamber formed on the out-side surface of a cooking chamber, a fan housing installed inside of the heater chamber so as to be rotational within a predetermined rotation range including an inlet hole where the air inside of the heater chamber flows into and a discharging port for providing the air into the cooking chamber, and a fan installed inner side of the fan housing for generating air flow provided into the cooking chamber through the discharging port. Accordingly, the present invention can provide the heated-air uniformity to the each portion inside of the cooking chamber.

Abstract: In a heater system for a microwave oven including an air tunnel having an suction portion and a discharge portion, formed at an upper surface of a cooking chamber, a fan assembly installed inside the air tunnel and having a circulation fan forming air flow by sucking air inside the cooking chamber through the suction portion and discharge the sucked air through the air tunnel and the discharge portion, a first heater chamber having a first heater installed inside the air tunnel and heating air discharged into the discharge portion from the air tunnel, and a second heater chamber having a second heater installed inside the air tunnel and emitting radiation heat into the cooking chamber, wherein the suction portion and the discharge portion are respectively formed at each end portions of the upper surface of the cooking chamber, said end portions facing each other and positioned toward the side walls of the cooking chamber.

Abstract: Disclosed is a microwave oven capable of cooking food according to an output mode in response to an output level of its magnetron, including a fan motor having a low-speed node and a high-speed node to receive power, and having a turning speed variable in response to a node connecting state; an output mode selecting part through which one of output modes is selected; a switching part having at least one switch for switching power applied to the low-speed node or high-speed node of the fan motor; and a control unit controlling the switching part in response to an output mode selected by the output mode selecting part, thus preventing its electrical components from being overheated.

Abstract: A device for pressing and drying organic materials. The organic material is inserted between two sheets of thin cloth which are, in turn, sandwiched between two thick felt pads. These pads are then sandwiched between platens made from inorganic material. The assembly is heated, resulting in a pressed and dried organic material.

Abstract: The present invention relates to a hood apparatus of a ventilation-hooded microwave oven for preventing electric equipments within an electrical equipment installation chamber from being contaminated. In the present invention, a flow passage for discharging contaminated air generated from an oven range, which is installed below the ventilation-hooded microwave oven, is formed in such a manner that the contaminated air does not pass by the electric equipments installed in the electric equipment installation chamber 50. To this end, a bottom plate 51 is installed onto a bottom surface of the electric equipment installation chamber 50 in order to prevent the chamber from communicating with an exhaust airflow passage 70. Further, the contaminated air sucked from the outside of the ventilation-hooded microwave oven flows only through a gap between an outer case 40 and a cavity 45 and then toward an exhaust motor 60.

Abstract: Disclosed is a wall-mounted type microwave oven suspended on an installation surface, including a main body formed with a cooking chamber and a component chamber, an outer casing enclosing the main body, defining an outer appearance of the microwave oven, and a grill member installed between the main body and the outer casing, comprising at least one bracket having one end coupled to the main body and the other end coupled to the installation surface together with the planar surface of the outer casing; and a plurality of fastening members for coupling the reinforcement bracket and the outer casing to the installation surface. With this configuration, there is provided a microwave oven capable of being easily mounted in suspension structure where there is no cabinet having an installation space.

Abstract: A cooking apparatus comprising a heatable component insulated by a heat insulating material, wherein the heat insulating material comprises a plurality of metal sheets that are spaced apart from each other by a separator.

Abstract: A convection cooking appliance includes an oven cavity and an air channel assembly that extends about at least a portion of the oven cavity. The air channel assembly includes an air delivery section and a return section, both of which are preferably attached to the oven cavity through a quick latching connection. More specifically, the air delivery section is preferably mounted about an opening in a top wall of the oven cavity through a twist lock arrangement, while the return section is mounted about another opening formed in a bottom wall of the oven cavity also through a twist lock. The overall appliance also incorporates a microwave unit and a metal gasket is interposed at the connections of each of the air delivery section and the return section to the oven cavity in order to provide a continuous ground path between the components in order to contain the microwave energy.

Abstract: Damping device in a microwave oven including an air duct on an electrical compartment side of a partition wall for guiding an air flow from a cooing fan to a cooking chamber, a damper rotatably hinged on the air duct for selectively blocking the air duct, a driving cam having a relative thickness difference between a thick portion and a thin portion, rotatable in contact with one end of the damper for pressing the one end of the damper to rotate the damper centered on the hinge owing to the thickness difference, and control means for controlling rotation of the driving cam, thereby providing a smooth damping operation, reducing a device cost, and preventing the microswitch from being pressed excessively.

Abstract: Disclosed is a wall-mounted type microwave oven suspended on an installation surface, including a main body formed with a cooking chamber and a component chamber, an outer casing enclosing the main body, defining an outer appearance of the microwave oven, and a grill member installed between the main body and the outer casing, comprising at least one bracket having one end coupled to the main body and the other end coupled to the installation surface together with the planar surface of the outer casing; and a plurality of fastening members for coupling the reinforcement bracket and the outer casing to the installation surface. With this configuration, there is provided a microwave oven capable of being easily mounted in suspension structure where there is no cabinet having an installation space.

Abstract: The present invention relates to a convection fan control method of a microwave oven which is capable of changing discharge direction of the air heated by a heater to a heating object by controlling rotation direction of a convection fan in accordance with types of a dish comprising a cooking time setting process for selecting a dish type of a heating object and setting cooking time, a rotation direction setting process for setting rotating direction of a fan motor which is capable of rotating and reverse-rotating, a fan motor operating process for operating the fan motor in accordance with the set rotating direction, a fan operating process for rotating a fan by the operating of the fan motor, and a cooking process for cooking the heating object for the select cooking time by operating of a heater.

Abstract: A grain containment vessel equipped with one or more antennas and a vapor extraction system is disclosed. An electromagnetic heating pattern is established throughout the grain volume elevating the bulk temperature, while an air flow is applied throughout the grain volume. The electromagnetic energy desorbs the water and increases the vapor pressure and the air flow carries the heat and water from the containment vessel. A controlled amount of electromagnetic energy is introduced into the grain volume to reduce or eliminate fungus infestation and increase insect mortality.

Abstract: A built-in microwave oven is provided, installed in the kitchen furniture as an integral part of the furniture. In the microwave oven, a suction grille and an exhaust grille are provided on the front wall of the external casing, and so cooling air is sucked and discharged through the front wall of the casing. Upper and lower heaters are installed within the casing, with an upper inside air passage formed around the upper heater that guide an air current formed by an upper heater cooling fan, and another air passage is formed around the lower heater that guides an air current formed by a lower heater cooling fan. The inflow air from the suction grille is partially and directly guided to the exhaust grille so as to be mixed with hot air from the upper and lower heaters prior to being discharged from the external casing to the atmosphere through the exhaust grille. Therefore, the exhaust air from the exhaust grille is preferably reduced in its temperature to a proper low point.

Abstract: A method for detecting abnormal operation state of parts of a microwave oven including a memory, a plurality of heaters and cooling fans is provided, which includes the steps of extracting cooking data selected by a user from the memory, driving the cooling fan according to the extracted cooking data, determining whether or not to drive the heaters according to whether a driving current of the cooling fan is higher than a first preset current or not and detecting an abnormal state of the cooling fan, and determining whether or not to advance the cooling according to whether a driving current of the heaters is higher than a second preset current as the heaters are driven, and detecting an abnormal state of the heaters, so that the damage of parts or danger of fire of the microwave oven due to the malfunction of the parts may be prevented in advance, and the state of the microwave oven may be recognized in a remote place by using internet instead of visiting of a service member, since the malfunction may be che

Abstract: Microwave unit for drying or similar treatment of objects not enclosed in a microwave oven. An air-cooled magnetron 4 enclosed in a magnetron box is used as microwave generator. The cooling air is governed so as to obtain a forced air stream over the colling surfaces. The unit allows higher power output with respect to high frequency energy without a corresponding increase of input power. Method for ameliorating cooling.

Abstract: A microwave oven comprising a main body formed with a cooking compartment, an outer casing surrounding the main body, to define an outer appearance of the microwave oven, a grill member provided between the main body and the outer casing, having a number of air passing holes, and a grill cover rotatably provided in front of the grill member, opening and closing the grill member, further comprising a main cam rotatably contacting with a rear face portion of the grill cover; a motor moving the main cam; and a switch sensing a rotational position of the main cam, the rotational position of the main cam being controlled to control the opening/closing operation of the grill cover when the motor operates. With this configuration, the switching operation is facilitated, the range of switching operation is constant, and the cost of production is reduced.

Abstract: Disclosed is a microwave oven having a cavity casing forming a cooking compartment, comprising a temperature sensor sensing a temperature of the cooking compartment; a duct member installed on the top face of the cavity casing, guiding a flow of air, having an opening toward the cavity casing at one side thereof, and a holder sensor provided on an inner wall of the duct member, holding the temperature sensor. With this configuration, an operational process for installing the temperature sensor in the microwave oven is simplified and the cost of production can be reduced.

Abstract: The present invention relates to a damper apparatus for a microwave oven by which the production cost and the reliability of the operation can be obtained by simplifying the structure of a damper apparatus for controlling the air flow supplied into the cavity of a microwave oven, which comprises an air duct for guiding a cooling air from the machinery compartment of the microwave oven into the cavity; a damper rotatably installed in the air duct for opening or closing the air flow in the air duct; a motor which includes a shaft directly connected to the damper to drive the damper; and a micro switch installed at one side of the air duct for detecting the opening and closing states of the damper by contacting one side of the damper.

Abstract: An improved container is provided for cooking eggs and the like in a microwave oven. The container includes a bottom cup having a top opening and a top cap configured to fit over the top opening. The container can also include a unique separator fitted within the bottom cup. The separator can include a cracker plate for cracking egg shells and/or at least one depending leg extending along an inside surface of the bottom cup to facilitate separation of cooked eggs. The container can also include a unique scrambler fitted within the top cap. Preferably, the scrambler is formed as a grid through which egg contents can pass when the container is shaken. In addition, a novel cradle can be provided to facilitate carrying and handling of a plurality of like containers. The preferred embodiments of the present invention enable a variety of egg dishes—e.g., poached eggs, scrambled eggs, omelets, etc.—to be easily and conveniently cooked in microwave and the like ovens with added health benefits, e.g.

Abstract: A microwave oven is installed above a cooking counter such as a kitchen stove counter. The microwave oven has its housing covered by an oven case, and incorporates a fan. By driving the fan, the microwave oven can have the hot air generated at the cooking counter inhaled from beneath the oven case and discharged from a front opening. The front opening is formed at the front face of the oven case. An operation display device is provided at the front face of the oven case. By one operation of a predetermined key on the operation display device, the drive of the fan is initiated and then automatically terminated at an elapse of a predetermined time (for example, 10 minutes).

Abstract: A microwave oven having a body casing forming a cooking chamber, an outer casing enclosing the body casing, and a magnetron for supplying the cooking chamber with microwaves is provided. The microwave oven includes a plurality of high-voltage transformers installed in series between the top of the body casing and the outer casing, each high-voltage transformer supplying the high voltage to the magnetron. With this configuration, the height for installing the high-voltage transformer is lowered, so the cooking chamber can be extended to a rear area of the control panel to thereby increase the size of the cooking chamber. The heat generated from the component chamber can be effectively discharged outside, and turns of a winding for the high-voltage transformer can be decreased, thereby reducing the cost of production.

Abstract: A serving utensil, which in a preferred embodiment is in the form of an ice cream scoop that can be heated in a conventional or home microwave oven to facilitate scooping a frozen confection from a container. The serving utensil includes bowl portion formed from a substantially rigid material that becomes heated when subjected to microwave radiation in a conventional microwave oven and handle portion, attached to the bowl portion, formed from a substantially rigid material that substantially restricts the absorption of microwave energy. The handle portion includes a recess in its upper side approximate the bowl portion adapted to receive a user's thumb therein and a transverse groove in its underside, longitudinally aligned with the recess and adapted to receive a user's index finger therein.

Abstract: The present invention relates to a microwave oven including a cavity having a certain area for cooking comprising a flow path formed between a main body and the cavity so as to be connected from a side of the cavity to the upper surface of the cavity, a heater installed on the side of the flow path corresponding to the outer upper surface of the cavity for emitting heat, a discharge hole installed on the upper surface of the cavity corresponding to the lower portion of the heater for discharging the heat of the heater into the cavity, an inlet installed on the lower portion of the side wall of the cavity for making the air inside of the cavity flow in the flow channel, and a circulating fan installed on a certain portion of the flow channel for circulating the air inside of the cavity flown through the inlet to the heater.

Abstract: The present invention relates to a microwave oven including a cavity having a certain area for cooking, a magnetron installed at the outside of the cavity for generating microwave, a waveguide installed at the side of the magnetron and its end extended inside of the cavity for transmitting the microwave inside of the cavity. The microwave oven comprises a bidirectional flow channel formed inside of the waveguide for transmitting microwave selectively inside of the cavity in accordance with cooking function, a microwave plate combined to inside of the waveguide so as to be rotational for guiding the microwave to selected direction between the two direction of the flow channel, and a plasma lamp installed adjacent to the side of the bidirectional flow channel for generating radiant energy by being heated by the microwave.

Abstract: Disclosed is a wall-mounted type microwave oven including a main body having a suction grill for an air passageway to a cavity, a hood duct for a second air passageway for fumes and smoke generated from a gas range placed below the microwave oven, a hood inlet port and outlet port coupled to the hood duct, a hood fan installed within the hood duct of the main body, and discharging air drawn in through the suction port and the hood inlet port, through the hood outlet port, a louver opening and closing the suction grill, a louver driving motor driving the suction louver, a hood switch turning on over a predetermined temperature, and activating the hood fan, and a hood driving circuit part activating the louver driving motor so as to open the louver depending upon a turn-on state of the hood switch.

Abstract: A convection cooking appliance includes an oven cavity surrounded, at least in part, by an air channel assembly. The appliance includes at least first and second heating units arranged in the air channel assembly, as well as an additional heating unit in the oven cavity. A blower assembly is provided to generate a recirculating flow of air through the air channel assembly and the oven cavity. A microwave generator and a catalyst are also arranged in the air channel assembly. A controller, responsive to operator inputs and signals from a temperature sensor extending into the air channel assembly, regulates the activation/deactivation state of each of the components based on a preprogrammed algorithm. One of the heating units in the air channel assembly is constituted by an open coil heating element, defined by a plurality of rows spaced in the direction of air flow downstream of the blower assembly. The arrangement of the coils functions to straighten the air flow for delivery to the oven cavity.

Abstract: A cooling structure for ventilation-hooded microwave ovens including an instrument compartment separated from a cooking cavity. The instrument compartment includes a first electronic equipment piece positioned at an upper portion of the instrument compartment, and a second electronic compartment piece positioned at a lower portion of the instrument compartment. A fan assembly is mounted on an upper portion of the instrument compartment in the form of a slope. The fan assembly generates a downward air current to the first and second electronic equipment pieces.