| 摘要 |
PURPOSE:To provide a greater freedom of positioning an air duct hole in a microwave heating device for foodstuff by disposing multiple ribs around or inside the air duct hole so that they may be present on all lines combining a punching metal and air duct hole for exhaust air duct. CONSTITUTION:Ribs 9 are disposed around and inside an air duct hole 5' opened in the top of an air duct 4 so that they may interrupt all lines combining a punching metal 3 and an exhaust louver 7 of a grill 6 through the air duct hole 5'. By this constitution, a rod 8 is inhibited from entering the heating chamber 2 through the punching metal 3 by being regulated by the ribs 9, which satisfies regulatory standards and offers a freedom of positioning the air duct hole.
|
