| 摘要 |
The mixing chamber of a liquid jet apparatus is composed of a convergent inlet section and a cylindrical outlet section and the ratio between of the surface area of the minimal cross-section of the mixing chamber and the surface area of the inlet cross-section of the mixing chamber ranges from 0.005 to 0.392, and the angle of inclination between either the ruling line of a conical surface forming the convergent inlet section of the mixing chamber or the tangents to each point of a curved surface forming the convergent inlet section and the flow axis of the mixing chamber ranges from 30' to 10°. In another embodiment of the jet apparatus, the whole mixing chamber converges in the flow direction and the ratio of the surface area of the minimal cross-section of the mixing chamber to the surface area of the inlet cross-section of the mixing chamber ranges from 0.005 to 0.392, and the angle of inclination between either the ruling line of a conical surface forming the convergent mixing chamber or the tangents to each point of a curved surface forming the convergent mixing chamber and the flow axis of the mixing chamber ranges from 30' to 10°. A jet apparatus realized according to the above-mentioned dimensions exhibits an improved efficiency.
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