Abstract: A cooker is provided. The cooker includes a casing, a cavity part in the casing and including a cooking chamber to cook food, and an exhaust duct through which exhaust gas is discharged. The exhaust duct includes a first duct part having a lower end communicating with the cooking chamber, a second duct part extending from the other end of the first duct part, the second duct part making a predetermined angle with respect to the first duct part or having a predetermined curvature, and a flow passage extension protruded from a portion of the first duct part or the second duct part in an outward direction. At least a portion of the flow passage extension extends at an angle different from the predetermined angle between the first and second duct parts or the flow passage extension has a curvature different from the predetermined curvature of the second duct part.

Abstract: Microwave appliances and methods for operating microwave appliances are provided. A method includes operating a fan of the microwave appliance in order to draw a flow of air through a circulation conduit of the microwave appliance, measuring an operational characteristic of the fan with a sensor of the microwave appliance during the operating step, and providing an indicator signal when the operational characteristic exceeds a threshold value at the measuring step.

Abstract: Provided are a substrate processing apparatus and a method of manufacturing a semiconductor device that are capable of uniformly heating a substrate while reducing an increase in substrate temperature to reduce a thermal budget. The substrate processing apparatus includes a process chamber configured to process a substrate; a substrate support unit installed in the process chamber to support the substrate; a microwave supply unit configured to supply a microwave toward a process surface of the substrate supported by the substrate support unit, the microwave supply unit including a microwave radiating unit radiating the microwave supplied from a microwave source to the process chamber while rotating; a partition installed between the microwave supply unit and the substrate support unit; a cooling unit installed at the substrate support unit; and a control unit configured to control at least the substrate support unit, the microwave supply unit and the cooling unit.

Abstract: A microwave appliance and method for operating a microwave appliance are provided. The method includes operating a fan of the microwave appliance in order to draw a flow of air through a circulation conduit of the microwave appliance, measuring an air quality of the flow of air within the circulation conduit with a sensor of the microwave appliance, and deactivating the fan of the microwave appliance if the air quality of the flow of air within the circulation conduit of the microwave appliance exceeds a threshold value. In such a manner, the flow or air can be properly filtered without operating the fan of the microwave appliance excessively.

Abstract: The invention relates to a device for continuously carrying out chemical reactions. The device comprises a microwave generator, a microwave applicator accommodating a microwave-transparent tube, and an isothermal reaction section which is arranged such that the material to be reacted is guided inside the microwave-transparent tube through a microwave applicator which is used as the heating zone and in which it is heated to reaction temperature by means of microwaves that are emitted from the microwave generator into the microwave applicator. The material to be reacted, which is heated and optionally under pressure, is transferred from the microwave applicator to an isothermal reaction zone once it has left the heating zone, said reaction zone being arranged downstream of the heating zone, and is cooled once it has left the isothermal reaction zone.

Abstract: An over-the-range microwave oven and a ventilation passage system of the same are provided. The over-the-range microwave oven includes an outer casing defining a cooking cavity and an exhaust passage in the outer casing, the exhaust passage defining an inlet formed in a base plate of the outer casing and an outlet; and a baffle plate disposed below and facing the base plate, in which the baffle plate and the base plate are spaced apart from each other to form a smoke collection cavity between the baffle plate and the base plate.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a cooking cavity, an upper space formed above the cooking cavity, lateral side spaces formed to at opposite lateral sides of the cooking cavity, a rear space formed behind the cooking cavity, and a lower space formed below the cooking cavity. A fan provided in the rear space generates a cooling flow that cools components housed in the rear space. A cooling flow path extends from the rear space and into the upper space and lateral side spaces. Flow from the upper space enters the door to cool the door and is exhausted through a lower portion of the door. Flow from the lateral side spaces, which includes an exhaust flow from the cooking cavity, is guided to the lower space and exhausted. In this manner, the cooking apparatus can be completely cooled and cooking odors and heat appropriately exhausted by the cooling fan positioned in the rear space.

Abstract: A cooking appliance such as a microwave oven is provided with a sacrificial region for repairing damage caused by arcing and related failure modes. The sacrificial region incorporates a component that, when damaged, is removable from the cooking appliance for replacement by another component of similar construction. In one implementation, a sacrificial component is utilized in a microwave oven with a heated cavity subject to microwave radiation from a magnetron. The sacrificial component in this example includes an aperture that communicates with an opening in the cavity, and through which the radiation impinges into the heated cavity.

Abstract: A heating system for hot water and conditioned air uses electromagnetic energy created by one or more magnetrons operated by high voltage transformers. The heating system includes oil cooled transformers and magnetrons. Using radiators in the form of heat exchangers, heat recovered from the transformers and magnetrons is dissipated directly into the path of the return air and the air handler blower. The magnetron heating system includes a coiled conduit sized to allow complete heating of the fluid flowing therethrough. The conduit has a conical shape to allow upper magnetrons to heat the outside of the conduit and lower magnetrons to heat the inside of the conduit.

Abstract: An oven is described having an interior space defined by a plurality of side walls, a duct, and a blower. The duct is in fluid communication with a ventilation aperture in at least one of the side walls and a supply of ambient air external to the oven cavity. The blower is in fluid communication with the duct and forces the supply of ambient air into the oven cavity via the ventilation aperture.

Abstract: A microwave heating apparatus is provided to perform heat treatment on a substrate to be processed by irradiating a microwave to the substrate in a processing chamber. The microwave heating apparatus includes a supporting table configured to support the substrate in the processing chamber, a microwave introducing unit configured to introduce the microwave into the processing chamber, a coolant channel formed in the supporting table, and a coolant supply source configured to supply a coolant to the coolant channel. At least a surface of the supporting table which supports the substrate is made of a material in which a product of a relative dielectric constant and a dielectric loss angle is smaller than 0.005, and the coolant supplied from the coolant supply source is liquid having no electrical polarity.

Abstract: A heating cooker including a cooker body having a cooking chamber and a convection heating unit. The convection heating unit includes a convection heater to generate heat, a convection fan to forcibly move the heat generated from the convection heater into the cooking chamber, a convection motor to drive the convection fan, and a convection housing to receive the convection heater and the convection fan. The convection heater and the convection fan are linearly arranged within the convection housing, to allow air introduced into the convection housing to move from the convection fan to the convection heater. This configuration is effective to restrict the transfer of heat from the convection heater to the convection motor.

Abstract: A door for a cooking apparatus and a cooling system for the door are provided. A fan for creating flows of air into and out of a cavity assembly is also used to create flows of air in a door cooling passage of the door. Therefore, the door can be cooled in a simple manner.

Abstract: A microwave ground or road surface heating system that eliminates the need for preparation of the surface to be heated while preventing leakage of microwave radiation. The highly portable microwave heating system prevents leakage of microwave radiation via a microwave horn and sealing shroud configuration that seals the unit to the surface being heated.

Abstract: A cooking device comprises: a body casing (1); a heating chamber (2) disposed within the body casing (1) and provided with a gas discharge opening; a gas discharge path having one end connected to the gas discharge opening of the heating chamber; a cooling fan disposed within the body casing (1) and cooling an electric component; and a cooling path formed within the body casing (1) and leading from an outside-air suction opening (100) through the cooling fan and an electric component chamber to a cool-air introducing opening (31a) in a gas discharge duct (30). At least a part of cooling air from the cooling fan flows along the cooling path, passes through a space near heaters (14, 14) within the body casing (1), enters the gas discharge duct (30) from the cool-air introducing opening (31a), and is discharged from a gas-discharge external opening (28).

Abstract: A microwave heating apparatus (101) includes a burning chamber (103) in which an object (102) to be burned is placed, a magnetron (116) for applying microwaves into the heating apparatus, a cooling gas introducing mechanism (112b) for introducing a cooling gas from outside the heating apparatus into the heating apparatus, a cooling gas channel (113b) through which the cooling gas flows to the burning chamber (103), heat-generating members (114a to 114e) for self-heating with microwaves applied thereto to heat the cooling gas flowing through the cooling gas channel (113b) and a control section (117) for, when the burning chamber (103) having the object (102) to be burned placed therein is cooled, causing the cooling gas introducing mechanism (112b) to introduce the cooling gas into the heating apparatus, and causing the magnetron (116) to intermittently apply microwaves into the heating apparatus.

Abstract: An observation window for a microwave device exhibiting microwave radiation of a predetermined frequency, the observation window comprising two optically transparent panels to which an optically transparent conductive film has been applied to a single side thereof, each of the transparent conductive films primarily reflecting incident microwave radiation and being substantially parallel and spatially separated from each other by a predetermined distance, the predetermined distance being equal to an odd integer multiple of one quarter of the wavelength of the microwave radiation of the predetermined frequency in the interstice between the transparent films, the predetermined distance having a tolerance of plus or minus 0.15 of the wavelength in the interstice.

Abstract: In a heating cooking device, a machine chamber is provided adjacent to a heating chamber for housing a food product. An air supply port is provided in a partition wall that separates the heating chamber and the machine chamber. An air supply fan is provided in the machine chamber, for supplying air to the heating chamber through the air supply port. An air supply damper is provided in the machine chamber, for opening and closing the air supply port. A control unit drives the air supply fan and brings the air supply damper into an open state during high-frequency heating of the food product. The control unit brings the air supply damper into a closed state simultaneously with completion of high-frequency heating of the food product or immediately before or immediately after the completion.

Abstract: An apparatus for welding a plastic component to a body's aperture includes a first heating head mounted to a frame element for heating the component, a gripper for gripping the component and for mounting the component to the body's aperture, a heater arm having a second heating head mounted thereto for heating the aperture, and an actuator for mounting both the heater arm and the gripper to the frame element for alternating between a heating position wherein ia) the gripper is generally aligned with the first heating head for abutment therewith, while ib) the second heating head is positioned for heating the aperture, and a work position wherein ii) the gripper is generally aligned with the aperture for mounting the component to the aperture for welding therewith: The gripper is mounted to the actuator via a cylinder arm provided with a collision monitor to detect inadvertent collision.

Abstract: Provided are a ventilation hooded microwave oven and a cooling system for the ventilation hooded microwave oven. In the ventilation hooded microwave oven, a pull-up door is provided, and various components of a cavity assembly, the pull-up door, and a door handle can be cooled by airflows induced by a cooling fan assembly. Therefore, outside areas of the ventilation hooded microwave oven can be efficiently used, and the ventilation hooded microwave oven can be reliably prevented from overheating.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a cooking cavity, an upper space formed above the cooking cavity, lateral side spaces formed to at opposite lateral sides of the cooking cavity, a rear space formed behind the cooking cavity, and a lower space formed below the cooking cavity. A fan provided in the rear space generates a cooling flow that cools components housed in the rear space. A cooling flow path extends from the rear space and into the upper space and lateral side spaces. Flow from the upper space enters the door to cool the door and is exhausted through a lower portion of the door. Flow from the lateral side spaces, which includes an exhaust flow from the cooking cavity, is guided to the lower space and exhausted. In this manner, the cooking apparatus can be completely cooled and cooking odors and heat appropriately exhausted by the cooling fan positioned in the rear space.

Abstract: A microwave oven including an extendable/retractable hood assembly is provided. The microwave oven draws contaminated air through intake ports that are provided in a hood casing and a hood. The hood is slidably received in the hood casing. Thus, the hood is retracted or extended from the hood casing to more efficiently perform an air exhaust function.

Abstract: A microwave oven having a hood is provided. The microwave oven may more efficiently suction air containing contaminants, thereby more efficiently preventing diffusion of air containing contaminants. In addition, the microwave oven may tilt a tilting hood using a simplified construction.

Abstract: A handle is disclosed. The handle includes a casing, which includes an outside surface and an inside surface. The handle further includes a pliable heat sink disposed on the inside surface of the handle casing. A microwave oven incorporating such a handle is also disclosed.

Abstract: A heating cooking appliance includes a heating chamber for items to be cooked, a circulation duct connecting an inlet port and an outlet port both of which open into the heating chamber, an air blower located in the circulation duct, and a heating device in the upper part of the heating chamber. Gas in the heating chamber is taken into the circulation duct from the inlet port by the blower. The gas temperature is raised by the heating device, and subsequently, the gas is blown into the heating chamber from the inlet port. The circulation duct is provided with first and second paths which branch off upstream of the heating device. The first and second paths guide gas to the area upstream and downstream of the heating device, respectively.

Abstract: A user interface arranged at least to display, on a display unit or on a display panel, information relative to the operation of a household electrical appliance with which the interface is associated, the appliance presenting functional members controlled in their operation by a control unit, and an external housing provided with an aperture with its own closure door; the interface is positionable on and fastenable to the exterior of the housing of the electrical appliance, remote wire-less data communication and transmission means being associated with the control unit and with the interface to enable the data to be transmitted from the interior of the electrical appliance to the interface through the housing. A household electrical appliance with this interface is also claimed.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a cooking cavity, an upper space formed above the cooking cavity, lateral side spaces formed to at opposite lateral sides of the cooling cavity, a rear space formed behind the cooking cavity, and a lower space formed below the cooking cavity. A fan provided in the rear space generates a cooling flow that cools components housed in the rear space. A cooling flow path extends from the rear space and into the upper space and lateral side spaces. Flow from the upper space enters the door to cool the door and is exhausted through a lower portion of the door. Flow from the lateral side spaces, which includes an exhaust flow from the cooking cavity, is guided to the lower space and exhausted. In this manner, the cooking apparatus can be completely cooled and cooking odors and heat appropriately exhausted by the cooling fan positioned in the rear space.

Abstract: An exhaust baffle is provided for a domestic appliance. The exhaust baffle includes a support bracket having two tabs, the tabs being configured to slide into engagement with slots formed in the base of the domestic appliance, two support elements, each of the support elements extending from one of the tabs at an angle and having a bearing surface, and a bridging element that extends from the two support elements at an angle, the bridging element connecting the two support elements; a baffle top having a hot gas directing portion that rests on the bearing surfaces of the support bracket and an opening that receives the bridging element; and a baffle bottom having a substantially flat member, the baffle bottom holding the support bracket in the slots when the baffle bottom is in an operating position.

Abstract: A microwave oven is provided. A barrier member prevents airflow provided by a fan assembly from being introduced again to the fan assembly. A separation member divides the airflow provided by the fan assembly to cool a first component and a second component. Thus, the components are efficiently cooled.

Abstract: A microwave oven includes: a cabinet forming the exterior; a base plate coupled to the cabinet and forming a bottom surface; a rear plate coupled to the cabinet and forming a rear surface; a cavity installed on the base plate to form a space at a rear side of the base plate; first and high-voltage transformers positioned in the space, and installed in one side and the center of the base plate, respectively; a first magnetron positioned in the space and disposed in the opposite side of the first high-voltage transformer; a second magnetron positioned in the space and disposed over the first magnetron; a fan assembly positioned in the space and disposed over the first transformer; a fan housing covering the fan assembly; and an air guide tube connected to the fan housing, and guiding an air flow to the first and second magnetrons.

Abstract: The invention provides a drawer type built-in cooking device, wherein an air outlet portion 10 for discharging the inside air containing heat and vapor generated during cooking of an object to be cooked has an air outlet duct 11 communicated from an air outlet port area 3b formed on a side wall of the heating chamber 3 to a lower side portion of a front wall 1a of the cooking device body 1. The outlet air flow flowing through the air outlet duct 11 is sent downward from an air outlet opening 13 formed to a lower side portion of the front wall 1a of the cooking device body 1 and discharged to the exterior of the device. The present invention enables to eliminate the prior art air inlet and outlet duct structure disposed below the heating chamber 3, and therefore, the height of the heating chamber can be increased correspondingly.

Abstract: Provided is a microwave oven having a hood. The microwave oven having the hood includes a main body having a cooking chamber in which foods are cooked and a passage through which air containing contaminants flows, a hood casing disposed on a lower portion of the main body, a first hood taken out of the hood casing, a second hood tilted at a position different from that of the first hood, the second hood being taken out of the hood casing, and a tilting control device allowing or restricting tilting of the second hood due to a self-weight of the second hood.

Abstract: A cooking device comprises a cooking device body comprising a heating chamber for heating an object; a fan, comprising a bladed wheel and a casing having the bladed wheel in rotatable manner, to discharge air in the heating chamber; and an exhaust duct comprising an exhaust guide plane to guide the air blown out by the fan to the outside of the cooking device body. The casing comprises an arc-shaped guide plane to guide an air flow generated by a rotation of the bladed wheel in a rotation direction of the bladed wheel, and an outlet port opened from a part of the arc-shaped guide plane to one side in a tangent direction of the arc-shaped guide plane. The rotation direction of the bladed wheel is a direction opposite to the opening direction of the outlet port, and turbulence is generated in the exhaust duct.

Abstract: A heater assembly for a microwave oven is provided. The heater assembly includes a ceramic heater and a halogen heater that provides heat used to cook food in a cooking chamber provided in a cavity assembly; a heater supporter fixed to a side of the cavity assembly, with the ceramic and halogen heaters fixed to the heater supporter; and a reflection plate provided above the ceramic and halogen heaters to reflect heat of the ceramic and halogen heaters to the cooking chamber, wherein a portion of the reflection plate corresponding to the ceramic heater is open in its longitudinal direction. With this structure, contact between a heating wire of the ceramic heater and the reflection plate is prevented and the heat dissipation of the ceramic and halogen heaters is obtained by means of airflow that is generated by a cooling fan assembly to cool electric parts.

Abstract: A microwave oven is provided. Components can be easily replaced through a service opening. Therefore, rapid and easy maintenance of the microwave oven can be possible.

Abstract: The disclosed heat cooker includes: a cooling fan for sucking in outside air from outside a casing and blowing the same into the casing during heat cooking of a heating object or item to be heated; an electrical component chamber which allows the outside air blown by the cooling fan to flow inside the casing; an air supply opening provided in a heating compartment to supply the outside air of the electrical component chamber into the heating compartment; an exhaust opening provided in the heating compartment for discharging smoke from the heating compartment to outside the heating compartment; an exhaust tube for guiding to outside of the casing the smoke that has come out of the heating compartment from the exhaust opening; an air supply damper for opening and closing the air supply opening; and a control unit (200) for controlling opening/closing operations of the air supply damper.

Abstract: A casing, a heating chamber that is provided in the casing and that has an opening on a front face thereof, an exhaust tube for guiding exhaust from inside of the heating chamber to front face side of the casing, a cooling fan that is provided in the casing, and an exhaust duct having an exhaust inlet to which the other end of the exhaust tube is connected are provided. Position along height direction of a cooling air inlet into which cooling air flows from under the exhaust duct is lower than position along the height direction of the discharge ports of the exhaust duct, and the position along the height direction of the cooling air inlet of the exhaust duct is lower than position along the height direction of the exhaust inlet of the exhaust duct. A heating cooker is provided that prevents the exhaust from the inside of the heating chamber from flowing into a main body thereof even if a fan for supplying air that is to be mixed with the exhaust breaks down.

Abstract: A microwave oven is provided. A component generating relatively high temperature heat and a component generating a relatively low temperature heat are cooled by airflow divided and provided by a cooling part, thereby improving operation reliability and durability of a product.

Abstract: Provided is a microwave oven having a hood. The microwave oven having the hood includes a main body having a cooking chamber in which foods are cooked and a passage through which air containing contaminants flows, a hood casing disposed on a lower portion of the main body, a first hood taken out of the hood casing, and a second hood taken out of the hood casing at a position different from that of the first hood.

Abstract: The invention provides a built-in cooking device comprising a door 2a having a size large enough to cover the front side of a cooking device body including a lower portion thereof, and on an inner lower surface of the door 2a facing the lower portion of the cooking device body is formed an air inlet portion 15a and an air outlet portion 15b composed of an air guide portion having a recessed portion for the air inlet and outlet portions, by which directions of the inlet air and outlet air moving in forward and rearward directions along the recessed portion of the door 2a are changed to the perpendicular direction. The present device has eliminated the front-side air inlet and outlet using an air inlet and outlet grill using an inlet and outlet air blow duct layer structure disposed on the bottom side of the device, and the rear side of a duct constituting the present air inlet and outlet portion is disposed along a warm wall surface of the heating chamber.

Abstract: A heating cooker includes a cooking chamber accommodating an object to be cooked, a hot air generator and a blower. Hot air generated by the generator impinges as a high-speed impinging jet on the object from a nozzle hole located in a ceiling plate. The hot air having impinged on the object is drawn our through hot-air suction openings located in lower parts of right and left sidewalls of the chamber by the blower. A shelf plate is located in the chamber so that the object is placed on it. The shelf plate has openings on right and left sides. Hot air is caused to impinge on the object through the nozzle hole. The shelf has a convex portion formed on a face on which the object is to be placed which supports the object from below.

Abstract: A microwave oven including a hood. The hood adapted to be withdrawn from or inserted into a hood casing. The microwave oven further including an elastic member that applies an elastic force on the hood to facilitate the withdrawal of the hood from the hood casing. The insertion of or withdrawal of the hood from the hood casing provides for a more efficient hood function.

Abstract: A microwave-excited ultraviolet lamp system includes a microwave chamber supplied with cooling air from an air source. At least one of a pressure sensor or a temperature sensor is positioned within the system to sense a pressure associated with the flow of cooling air or a temperature of the lamp system. A control receives a signal from the sensor and is operable to adjust the flow of cooling air from the source to obtain a desired cooling air flow rate.

Abstract: The portable microwave oven with protective frame is a microwave oven adapted for use in rugged environments, such as a construction site. The portable oven includes a microwave oven and an outer protective frame mounted to the microwave housing. A plurality of connector members are provided, with each connector being mounted on a respective corner of the microwave housing. Each connector is formed from a shock absorbing material. A plurality of support members are further provided, with each support member being mounted to, and joining, a respective adjacent pair of connectors. The support members form the protective frame about the microwave oven and provide a shock-absorbing shield for the microwave oven housing.

Abstract: A wall-mounted microwave oven including a hood mover having a forwardly-movable hood plate. The hood plate, which guides fumes, exhaust gas, etc. to an inlet arranged at the bottom of the wall-mounted microwave oven, is separable from a body of the wall-mounted microwave oven. The hood plate is arranged outside and beneath the body, to prevent oil and dirt, etc. from being attached to a lower case of the body. The wall-mounted microwave oven includes a hood mover movable with respect to the body. The hood mover includes a hood plate, a frame member to separably support the hood plate, and a moving member to move the frame member with respect to the body. The frame member has a channel-shaped guide groove to receive the hood plate, thereby enabling the frame member to support the hood plate, and a fastener to prevent a separation of the hood plate.

Abstract: A cooking device includes a housing having an opening, an airflow device that draws air into the housing through the opening, a filter that is removably connected to the housing to cover the opening, and a controller that controls an amount of the air drawn into the housing based upon a presence of the filter covering the opening or an absence of the filter covering the opening.

Abstract: A drawer type cooking device for disconnecting and connecting the linkage between the drawer body and the movement mechanism in response to the user's selection of operation between a manual opening/closing operation and an electric automatic opening/closing operation of the drawer body. Based on the user's input via the operation unit, connection/disconnection of power transmission via a clutch mechanism and driving/stopping of a drive mechanism is automatically controlled. By turning the clutch mechanism off and isolating the drawer body from the motor, the load of manual operation to open/close the drawer body is reduced. Based on the user's operation via the operation unit, the clutch mechanism is set to connected state, and in that state, the drive mechanism is driven so that power is transmitted to the rack of the drawer body, and the drawer body can be automatically opened and closed.

Abstract: A cooking apparatus is provided. The cooking apparatus includes a cooking cavity, an upper space formed above the cooking cavity, lateral side spaces formed to at opposite lateral sides of the cooking cavity, a rear space formed behind the cooking cavity, and a lower space formed below the cooking cavity. A fan provided in the rear space generates a cooling flow that cools components housed in the rear space. A cooling flow path extends from the rear space and into the upper space and lateral side spaces. Flow from the upper space enters the door to cool the door and is exhausted through a lower portion of the door. Flow from the lateral side spaces, which includes an exhaust flow from the cooking cavity, is guided to the lower space and exhausted. In this manner, the cooking apparatus can be completely cooled and cooking odors and heat appropriately exhausted by the cooling fan positioned in the rear space.

Abstract: A fan motor is mounted on the upper wall of the casing. The lower surface of this upper wall is formed into an inclined surface in which inclination is formed from the front wall side of the casing toward a back wall across from the front wall. When the fan motor is driven, oil mist or moisture contained in the air are condensed into water droplets or oil droplets. These water droplets or oil droplets fall and flow to the inner wall surface of the upper wall of the casing along the inner peripheral wall of a vent hole. Then the water droplets or oil droplets flow along the profile line of a vent hole smoothly (without stopping) and roll down the side wall of the casing.

Abstract: A cooking appliance includes a recirculating airflow which is directed through particularly configured air plenum and nozzle structure that synergistically combine to enhance an overall cooking efficiency and effectiveness. In particular, the configuration of the air plenum, as well as the sizing and distribution of oven cavity entry nozzles, provides for an enhanced flow of heated air to the food product, thereby resulting in short cooking times due to high heat transfer while also providing an even browning and crisping of the food item being cooked. In addition, the cooking appliance incorporates an exhaust system wherein cooling air and a percentage of the recirculating airflow are mixed prior to being exhausted from an angled exhaust mixing tube.