| 摘要 |
PROBLEM TO BE SOLVED: To reduce the fraudulent vibration of a sucking and mixing device.SOLUTION: A first fluid (e.g. water) is mixed with a second fluid (e.g. ozone gas). The cross-section of a channel is a true circle. A nozzle 12 is placed on the central axis of the channel. The nozzle 12 emits the second fluid from the discharge port 14 in the channel. The inner diameter of the channel has a relationship of D1>D2>D3. An inlet 18 for receiving the first fluid is provided in a portion of the inner diameter D1. The first fluid flows into a tangential direction when viewed from a circular cross section perpendicular to the central axis of the channel. From a part of the inner diameter D2 to a part of the inner diameter D3, the inner diameter of the channel is reduced smoothly. When the first fluid flows into a vortex forming portion 20, a vortex flow is generated so as to revolve around the nozzle 12 in the portion of inner diameter D1. The first fluid flows into an accelerating portion 24, while forming a helical flow around the nozzle 12. Thus, the nozzle 12 is stably supported on the central axis of the channel to prevent vibration. |
