NOISE REDUCTION DEVICE OF MICROWAVE OVEN COMBINED WITH HOOD

摘要

PURPOSE: A noise reduction device of a microwave oven combined with a hood is provided to reduce a sound level sensed by a user outside the apparatus by absorbing the sound level discharged when a BPF(Blade Passing Frequency) noise produced from a dual-intake exhaust fan is discharged to the outside together with exhaust air. CONSTITUTION: A microwave oven combined with a hood comprises a body(101) forming a cooking chamber(C) for housing food; an outer casing(102) combined to the outside of the body; and a dual-intake centrifugal fan(111) mounted to the upper inner rear side of the outer casing, to suck/exhaust external air. The outer casing forms side exhaust passages(103) and an upper exhaust passage(104) to exhaust external air. A noise reduction device of the microwave oven combined with the hood has a noise-damping mechanism(120) mounted to the inside of the upper exhaust passage, to damp noise discharged to the outside.