A cooking chamber assembly in a microwave oven for improved which improves air
tightness in the cooking chamber, and reduces assembly complexity, time, and cost.
A tray which essentially forms a bottom surface of a cooking chamber of the microwave
oven is surrounded by a unitary gasket. A groove formed in an inner edge of the
unitary gasket is designed to receive an outer edge of the tray, and a lip formed
on an outer edge of the unitary gasket is designed to provide an air tight seal
with an inner surface of a case of the cooking chamber. An air duct which guides
circulating air is attached to an inner portion of the case with a series of hooks,
allowing the air duct to be attached without separate fastening members such as
screws or bolts, thus further reducing manufacturing time and cost.
