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An electric oven utilizing the recirculation of heated air at high velocity to cook food by impinging jets of such air directly against the food in an oven enclosure of low thermal mass which is divided into a cooking space which separates upper and lower plenums from which air is discharged through

An electric oven utilizing the recirculation of heated air at high velocity to cook food by impinging jets of such air directly against the food in an oven enclosure of low thermal mass which is divided into a cooking space which separates upper and lower plenums from which air is discharged through nozzle openings in perforated air distribution plates. The oven is provided with air ducts, parts of which are readily disassemblable for cleaning purposes.

대표청구항 ▼

A forced air portable electric oven for domestic use from a household power outlet and cooking by means of hot air heated electrically to a temperature of between 300 and 450 degrees F. comprising a light weight metal box-like housing having vertical side walls, top and bottom walls forming an oven

A forced air portable electric oven for domestic use from a household power outlet and cooking by means of hot air heated electrically to a temperature of between 300 and 450 degrees F. comprising a light weight metal box-like housing having vertical side walls, top and bottom walls forming an oven enclosure having a front opening closed by a door hingeably connected to said housing for movement between a position closing said opening and an open position permitting access to said enclosure, a pair of horizontal light weight metal plates dividing said enclosure into an upper plenum and a lower plenum separated by a cooking space, a blower for continuously recirculating air from said cooking space into said lower plenum and said upper plenum at high velocity, said plates each being formed with a plurality of nozzles which discharge air into said cooking space at velocities in excess of 300 feet per minute toward food to be cooked therein, an air heater for heating said circulating air to a temperature of between 300 and 450 degrees F., said air heater including a sheathed electric heating element having radiator elements positioned in the path of said recirculating air, air heater control means responsive to the temperature of said recirculating air to control the supply of power to said heating element, said recirculating air limiting the surface temperature of said radiator elements to less than 800 degrees F., such air temperature and air heater temperature substantially eliminating the generation of smoke as a consequence of animal fats being entrained with said recirculating air, said air heater being disposed in said lower plenum, said sheathed heating element having a tortuous configuration and being disposed in a horizontal plane with a pair of closely spaced terminals, said radiator elements being formed on a die cast member which extends horizontally and completely encloses said heating element except for said terminals, said air heater being positioned below the lowermost of said metal plates and being substantially coextensive therewith, said air heater being provided with a drip shield extending horizontally between said lowermost metal plate and said die cast member, said die cast member being formed with upwardly extending projections which engage said shield and support it in spaced relation to said radiator elements, said blower being supported on one of said enclosure side walls and including a motor driving a fan, said one side wall including a first opening in said cooking space and adjacent said fan to permit said blower to withdraw air from said cooking space, said one side wall having a second opening in said lower plenum and adjacent said fan to permit said fan to discharge air into said lower plenum and across said air heater, a duct on the side of said enclosure opposite said one side wall for conducting heated air from said lower plenum to said upper plenum, and a fan duct mounted on said one side wall and enclosing said fan and said first and second openings, said fan duct being a semicylindrical cup-shaped member with a side opening in the side that abuts said one side wall and a semicylindrical side wall that faces said side opening to form a shroud for said fan direct air from said first opening through said fan and out said second opening.