| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle structure for generating a swirling cavitation jet spreading in water. SOLUTION: The cavitation jet nozzle comprises a jetting hole (7) formed in the tip of a nozzle main body (1) and having a thin hole shape and an axially-directed high pressure water channel (4) formed in the upstream side of the jetting hole (7) and having a wider diameter than that of the jetting hole (7). In such a cavitation jet nozzle, a swirling chamber (5) and a tangentally-directed high pressure water channel (9) opened in the direction of the tangent line of the inner circumference of the swirling chamber (5) are formed in the jetting hole (7) and the axially-directed high pressure water channel (4).
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