SIMULTANEOUS INTAKE AND BLOW OUT TYPE VENTILATOR BUILT IN CEILING

PURPOSE:To ensure separation of intake and blow out passages constantly regardless of the change in the thickness of ceiling board to which a ventilator is built in by providing a detachable wall plate which separates the intake and blow out passages. CONSTITUTION:A ventilator exhausts the air sucked through a room side intake port 8 to an outside blow out port (not shown) by rotating blades 4, 5 for exhaust and blow out by a motor 6, and blows into the room the outside air sucked through the outside intake port (not shown) through the inside blow out port 9. The separator plates 7, 10 which separate said intake port 8 and the blow out port 9 are formed in one unit with a fan case and partition plates 11, 13 that slide along the separator plates 7, 10 are made into a unitary body with a louvre 12. By this construction, the exhaust passage and the intake passage are perfectly and constantly separated regardless of the change in the thickness of ceiling boards 16.