| 摘要 |
<p>PROBLEM TO BE SOLVED: To make sizes of a space needed for opening and closing operation of a suction grill as small as possible by providing the suction grill to be opened and closed by being split into a plurality of sections in a suction opening with a splitting face disposed approximately parallelly with a front face grill and pivotally supporting an outlet side suction grill on a bottom face grill so as to be engaged with the front face grill. SOLUTION: A main body 1 is formed into a fan shape by a pair of side faces, a front face grill 4, a bottom face grill 5 and a top plate and split suction grills 8a, 8b having a fan-like shape is provided in a fan-shaped suction opening of the bottom face grill 5. The front face grill 4 is provided with a plurality of through holes 20 in a lower peripheral part and the bottom face grill 5 is provided in opposing side peripheries of the suction opening with pivot parts 23, 24 having shafts 24a or the like protruding in opposite directions. The suction grill 8a at an outlet 9 side is provided with an engagement protrusion 8d on a position opposite to the through hole 20 in the front face grill 4 of the front peripheral part so as to constitute an engagement condition in an installed state. Further, slot holes 26a, 26b are provided in positions opposite to the pivot parts 23, 24 of the bottom face grill.</p> |
