| 摘要 |
PURPOSE:To set the gas blowout time less than specified time by rotatably providing a disc with a small hole between an outlet of a gas passage and a jet nozzle in high speed control for compressed gas for biological experiment or the like. CONSTITUTION:A disc 1 with a small hole is disposed between an outlet of a passage 3 for compressed gas and a jet nozzle 5. The disc 1 is connected to a synchronous motor 11 through a speed reducer shaft 3 and a speed reducer 10. In this arrangement, the outflow time of gas, the amount of time gas is jetted from the jet nozzle 5 in its turn is changed by changing the rotational frequency of the disc, the diameter of the hole and the position of the hole on the disc 1, so that those are suitably controlled to set the blowout time of gas less than 5(ms).
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