| 摘要 |
PURPOSE:To enable to store oil flowing down while adhering to an internal circumferential face of a front cover, by a method wherein a suction frame body forming a recessed groove is provided on the lower end of the front cover detachably and the recessed groove is inclined by lowering in one direction of the groove, a lower end side of which is made into an oil sump part. CONSTITUTION:A blower 7 (e.g.; a sirocco fan) is provided in the interior of a cylindrical ventilating base 4 fitting in an opening 3 provided on a wall of a house and a front cover 5 forming a hollow chamber 11 connecting with the ventilating base 4 is provided. A suction frame body 15 having a flat and deformed annular shape, which is provided with a suction opening 27 for a blower 7 on an appropriate position of its center, is provided attachably and detachably on the lower end of the cover 5, a recessed groove 28 is formed on the suction frame body against the lower end of the cover 5 and the bottom of the recessed groove is inclined by lowering in one direction of the groove, a lower end side of which is made into an oil sump 29. Washing and cleaning are facilitated by receiving and storing favorably oil flowing down while adhering to an internal circumferential face of the cover 5 and removing the suction frame body 15 as well. |
