To spray fine stable droplets even at a low pressure in a spray nozzle used for converting a liquid into fine particles.
A flow-in passage 4 is formed in a nozzle body 1, a swirling chamber 6 is formed on the upstream side of a jetting port 3 and a core 7 is fitted on the upstream side as a swirling producing part. The swirling chamber 6 is formed into a taper shape to decrease the diameter toward the side nearer the jetting port 3. A flow straightening body 10 formed into a conical shape to decrease the diameter toward the side nearer the jetting port 3 is arranged coaxially with the swirling chamber 6 on the downstream surface of the core 7. When a liquid flows into the swirling chamber 6 from the core 7, the change in the cross section of the surface vertical to the flow direction in a flow-passage which is a space formed by the flow straightening body 10 and the inside surface of the swirling chamber 6 is decreased, and thereby the pressure loss is reduced to keep the flow rate, the lowering of the swirling force is prevented and the fine stable spray is obtained even in a low pressure.
| JP3165278 | Liquid sprayer |
| WO/2012/129719 | SELF-EXCITATION OSCILLATION JET IMPACT NOZZLE HAVING RESONANT CAVITY WITH TAPER REFLECTING SURFACE |
| JP2019034284 | FLUID SUPPLY PIPE |
Tomoyasu Sakaguchi
Hiroki Naito
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