BREATHING VIBRATION GENERATING DEVICE IN RESPIRATOR, SELECTION VALVE GEAR FOR RESPIRATOR, AND SELECTION VALVE FOR RESPIRATOR

摘要

PROBLEM TO BE SOLVED: To provide a selection valve, especially, at a low cost in vibrating a breathing line by high frequency waves to make the line alternately communicate with a suction port and a discharge port of a blower by the selection valve.;SOLUTION: A vibration circuit 13 to be connected to an inhaling circuit 2 and an exhaling circuit 3 is connected to a blower 11 through a selection valve 12. The selection valve 12 has an oscillating pipe 22 disposed in a casing 21 to be capable of oscillating. A base end of the oscillating pipe 22 is constantly connected to the vibrating circuit 13. To the inside of the casing 21, pipings 34 extended from a discharge port 11a of a blower, and pipings 35 extended from a suction port 11b of it are opened. A motor 15 fixed to the casing 21 is rotated normally and inversely to drive the oscillating pipe 22 to oscillate (or reciprocate), the oscillating pipe 22 is alternately connected to the pipings 34 and 35.;COPYRIGHT: (C)2000,JPO