ROTARY VALVE, AIRDIFFUSER USING THE SAME, AND AIRDIFFUSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a rotary valve capable of controlling dispersion of an air flow and variations of pneumatic pressure in the other diffuser when a part of diffusers are blown down, and a diffuser and a diffusion system capable of uniformly and stably diffusing by making use of the rotary valve, when diffusing by means of a plurality of diaphragm type diffusers.

SOLUTION: The rotary valve 1 switches passages with relative motions between a casing 2 and a valve body 3 by selectively interconnecting or blocking a plurality of outflow passages 24. A through-hole 25 is arranged in the vicinity of the outflow passages 24 of the casing 2. A first interconnecting passage 32 forming a passage by interconnecting a part of the outflow passages 24, and a second interconnecting passage 33 discharging a fluid left in the outflow passages 24 from the through-hole 25 by interconnecting between the blocked other outflow passages 24 and the through-hole 25 when the part of the outflow passages 24 are interconnected by the first interconnecting passage 32 are arranged on the valve body 3.

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