| 摘要 |
PROBLEM TO BE SOLVED: To simplify mounting during a reform work and to prevent leakage of air through a connection part between an exhaust port and a cylinder body for exhaust. SOLUTION: A lock piece 13 is arranged at a side plate 11 of a body 1, a lock claw piece 21 is arranged at a side plate 20 of a body mounting frame 2, and a duct for exhaust gas is connected to a duct for exhaust by inserting a cylinder body 6 for exhaust in a hole 5 with the body mounting frame 2 protruding through an opening part 4 of a ceiling panel 3 to a position in a ceiling. Thereafter, the body 1 is inserted in a body mounting frame 2 and an intake port 8 is connected to a cylinder body 6 for exhaust, and the connection part is formed in an airtight state by a packing 9. Simultaneously, the lock piece 13 is locked at a lock claw 21 and curved deformation due to press of the packing 9 of the body mounting frame 2 is prevented from occurring and leak of air is prevented from occurring, so that airtightness of the connection part is prevented from lowering. |
