JPS6423047A - Exhaust suction opening for forced ventilating device for cooking - Google Patents

Abstract

PURPOSE:To reduce the grime sticking to the guide duct or forced device by detachably installing vanes having about a quadrant of a circle on the supports attached to the side plates on both sides in such a manner that the vanes are oriented forwardly and upwardly with their front edges aligned in a vertical plane and their centers sequentially displaced equidistantly. CONSTITUTION:The arc 13 of the vanes 12... is oriented forwardly and upwardly, and their front edges are aligned in a vertical plane along the rear end of a frame rim 16 of the casing 15. The centers of the arcs 13 are sequentially displaced on a straight line described slightly downwardly and inwardly at an equal spacing which is smaller than the radius R, and vanes are detachably installed on the supports 21, 22 with their rear ribs 14 engaged with the rear supports 22. The spacing between the vanes 12 is such that it is wider in the front and narrower in the rear, which forms the basis of an exhaust suction opening 11. The vanes are a quadrant of a circle or close to it, because the quadrant is most efficient for sucking the cooking exhaust horizontally and guiding it upwardly, during which the oily smoke etc., is caused to stick. If the arc is greater or smaller than that, the sucking or guiding becomes insufficient.