Jet injection device
A jet injection device that incorporates nanobubbles (ultrafine bubbles) in a mist includes: a two-fluid nozzle configured from a circular nozzle outer cylinder and an air connection tube integrally and perpendicularly connected to the nozzle outer cylinder; a nanobubble generation device that supplies the nozzle outer cylinder of the two-fluid nozzle with high-pressure nanobubble water; and a compressor that supplies the air connection tube of the two-fluid nozzle with high-pressure air. The gas-injected bubble water generated from the nanobubble generation device is pressure-fed to the nozzle outer cylinder of the two-fluid nozzle, and compressed air from the compressor is pressure-fed to the air connection tube of the two-fluid nozzle. In the two-fluid nozzle, the high-pressure gas-injected bubble water and the compressed air serve as a gas-liquid fluid mixture, and are injected at a high speed in mist form from a nozzle cylinder of the two-fluid nozzle.
1. A jet injection device comprising:
a two-fluid nozzle including a nozzle outer cylinder of a cylindrical pipe and an air connection pipe integrally connected to the nozzle outer cylinder at a right angle;
a nanobubble generation device configured to supply high-pressure nanobubble water to the nozzle outer cylinder of the two-fluid nozzle on one side thereof; and a compressor configured to supply high-pressure air to the air connection pipe of the two-fluid nozzle on the other side thereof.
2. The jet injection device according to claim 1 , wherein the two-fluid nozzle is characterized in that:
the nozzle outer cylinder includes a nozzle beak which is connected to a downstream-side tip portion thereof and has a small diameter through-hole formed therein, and a nozzle cylinder which is connected thereto so as to surround the nozzle beak;
the nozzle cylinder includes a nozzle chamber having a large diameter to house the nozzle beak, a tapered surface which is formed therein so as to have a reduced diameter inward from the nozzle chamber, and a large diameter through-hole which is formed therein continuously from the tapered surface and has a larger diameter than the small diameter through-hole of the nozzle beak;
the nozzle beak is disposed in such a way that the tip thereof is close to the tapered surface; and
the nozzle cylinder has an air suction hole provided in an outer periphery thereof so as to communicate with an outside air in the nozzle chamber of the nozzle cylinder.
3. The jet injection device according to claim 1 , wherein the nanobubble generation device includes a diaphragm type bubble generation device and a diaphragm pump,
the diaphragm type bubble generation device is connected with a gas tank for feeding CO 2 gas and a water storage tank for storing water, and nanobubble foams generated by the diaphragm type bubble generation device are stored in the water storage tank,
in the diaphragm pump, bubble water containing various gases in the water storage tank is drawn through one side thereof, and compressed air from the compressor is introduced through the other side thereof, and
the bubble water containing various gases and the compressed air are brought into a gas-liquid mixed state by the diaphragm pump, and the nanobubble water that has a high pressure is sent to a high-pressure liquid pipe on a downstream side.