JPS59195020A - Spraying device - Google Patents

Abstract

PURPOSE:To perform reliable control of a spraying amount, by installing a moving control part which can shut off at least a part of jet in a smooth flow range. CONSTITUTION:Water, sucked in a pump 3 through a water feed pipe 2 from a tank 1, is pressurized and fed to a nozzle 4, and is radially injected through a nozzle 4a in a spraying chamber 5. A position of a colliding material 5a is set so that it collides in a drop shape range, and water collides and is sprayed therein. Meanwhile, the air is fed from a fan 7 through an air port 8 into the spraying chamber 5, where sprayed particle is graded and carried and exhausted through a nozzle 6. A control body 9 is adapted to be turned by a regulating knob 11, and jet is caused to collide in a smooth flow range for shutting-off. This enables reliable control of a spray amount.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention atomizes and atomizes liquid, and makes it possible to control the amount of spray, and is useful for liquid fuel combustion equipment, food dryers, and internal combustion engines. The present invention relates to a spraying device that can be used as a vaporizer, a spraying device for agricultural chemicals, a humidifying device, and the like.

Conventional structure and its problems The so-called collision atomization method, in which liquid is pressurized and ejected from a nozzle, and the jet collides with an impactor to atomize it, has been used for some time, but it is difficult to adjust the amount of spray. There was a drawback.

If you try to adjust the amount of spray by changing the amount of air flowing into the atomization chamber without separating it, the amount of fine particles carried out will change, but if you reduce the amount of air, the flow velocity of the spray will also decrease, and the amount of particles near the spray outlet will change. For example, a humidifier may wet the floor near the spout, or a pesticide sprayer may not be able to reach the pesticide fine particles at a sufficiently long distance, which is extremely inconvenient. It was a control method.

On the other hand, when using a method of changing the pump input for pressurization, specifically a method of changing the pump voltage, it is difficult to obtain linearity in the change in the po/g pressure applied to the voltage.
Furthermore, when comparing the actual jet flow and the atomized state, as shown in Fig. 5, the jet flow 22 ejected from the nozzle 21 is first in the state of a smooth flow a, and then when it is vibrated, it is divided into droplets. However, when looking at the amount of atomization for this jet stream, when it collides with a flat plate impactor, as shown in Figure 6, the smooth flow a causes almost no atomization, and vibrations occur. There is a tendency for the amount of atomization to rapidly increase in the range of flowing to droplet flow C. However, when the pump pressure is changed, the pattern a of the jet flow 22 becomes
When the distances of , b, and Q change and the impactor is placed at the same position, the atomization efficiency changes significantly in addition to the jet flow rate changing due to pressure changes, making it virtually impossible to reliably control the spray amount. The drawback was that it was too easy to do so.

OBJECTS OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks of the conventional spraying apparatus and to ensure reliable control of the spray amount.

Composition of the Invention The spraying device of the present invention includes a nozzle having a plurality of nozzle ports and a collision part that collides and atomizes jets emitted from each nozzle port, and at least a part of the jets is directed into a qi clear stream region. A movable control section is provided, and the amount of atomization can be reliably controlled by removing jets that collide with the control section in a smooth flow region without atomizing them.

DESCRIPTION OF EMBODIMENTS FIG. 1 shows a front sectional view of a humidifier according to an embodiment of the spraying device of the present invention. In the figure, 1 is a water tank, 2 is a water supply pipe, 3 is a pump, and 4 is a nozzle. The nozzle 4 is provided with a plurality of radially opened nozzle ports 4a. 5
is an atomization chamber, and the inner wall of the atomization chamber 5 is also used as a collision body 6a.

6 is a spray nozzle. Further, 7 is a fan, and air flow is supplied to the atomization chamber 5 through an air port 8. Reference numeral 9 denotes a control body, in which a control hole 1o is bored in alignment with the nozzle opening 4a. Reference numeral 11 denotes an adjustment knob for rotating the control body 9. The nozzle 4 and the control body 9 are shown in an enlarged cutaway view in FIG. It is arranged.

Describe the behavior. Water sucked into the pump 3 through the water supply pipe 2 during the evening hours is pressurized and sent to the nozzle 4, where it is jetted radially into the atomization chamber 6 from the nozzle opening 4a.

The position of the impactor 5a is set so that the collision occurs in a droplet-like region shown in FIG. 5C, where water is atomized by impact. On the other hand, air is sent into the atomization chamber S from F/7 through the air port 8, and the atomized particles are classified (removed large-diameter particles) and carried out, and then released from the spray D6.

Here, the control body 9 is rotated by the adjustment knob 11, and changes as shown in FIG. That is, the third
In figure A, the control holes are 1oa and 1ob.

10c+1oa each coincides with the jet flow path, and both jets collide with the collision body 5a and are atomized. When the control body 9 is slightly rotated, only the control hole ioa with the minimum slit width is separated from the jet flow path (FIG. 3B), and the other jet flows continue. At this time, the jet that collided with the control body 9 is in the planing area shown in Fig. 5a, and as shown in Fig. 6, it can hardly be atomized, so it flows down within its width. , the amount of atomization will be approximately %. Similarly, in FIG. 3C, the control body 9 is further rotated, the control holes 10a and 10b are separated from the jet flow path, and the amount of atomization becomes about A. In this way, the control body 9 is rotated, and the jet flow becomes flat.
By blocking the collision within the flow region, the spray amount can be reliably changed sequentially from V4 to 1741 in the example shown in FIG. Moreover, in this case, since the air flow rate of the fan 7 is not changed, the range of particle diameters classified in the atomization chamber S remains unchanged, and the flow rate of the LCI mist discharged from the broken spray nozzle 6 does not change either. It is possible to maintain a good spray condition.

In this embodiment, the nozzle 4 has a radial nozzle opening.
Although it is an i-nozzle, by doing so, the jets in the atomization chamber 6 are close together and the atomized particles do not collide with each other again, which reduces the atomization efficiency, and it is possible to increase the amount of spray in a small space. There is an effect that can be obtained. If there is no spatial restriction, even if a plurality of single-hole nozzles are arranged side by side, the control effect will not be impaired.

There is no necessity to rotate the small control body 9, and as shown in FIG.
It is also possible to block the jet flow by downward movement using a control body 9' provided with a control body 9', and by providing a guide or the like to the nozzle 4 and the control body 9', it is possible to exhibit the advantage that positional deviation can be avoided.

Furthermore, if necessary, the spray amount can be controlled in small steps such as the full amount and the V2 claw, but as shown in this example, by sequentially changing the spray amount in multiple steps, detailed control that is reliable and accurate to the current situation is possible. This will significantly expand the scope of use.

Effects of the Invention As described above, the atomizing device of the present invention changes the atomized paper by blocking some of the plurality of jets within the flat 1.1 flow region, and is reliable and reproducible. It also makes it possible to control the amount of spray without changing the spray properties such as particle size distribution and flow rate.

[Brief explanation of the drawing]

Fig. 1 is a front cross-sectional view of a humidifier according to an embodiment of the spraying device of the present invention, Fig. 2 is a partially cut away perspective view of the main part thereof, Fig. 3 is an explanatory diagram of its operation, and Fig. 4 is another embodiment. FIG. 5 is a cutaway perspective view of the main part of the example, FIG. 5 is a diagram for explaining the action, and FIG. 1...Tank, 2...Water pipe, 3...
・Pump, 4... Nozzle, 4a... Nozzle opening, 5... Atomization chamber, 5a... Collider, 6...
...Spray nozzle, 7...Fan, 8...
Air port, 9, 9'... Control body, 10.10'.
...Control hole, 11...Adjustment knob. Name of agent: Patent attorney Toshio Nakao and 1 other person @1
Figure 2: 53 Figure (A) (13
(c) Figure 4

Claims (1)

[Scope of Claims] (g) Comprising a liquid pressure-feeding means, a nozzle having a plurality of nozzle ports that ejects pressurized liquid, and a collision part that collides and atomizes the jet stream ejected from the nozzle, and A spray device comprising a movable control section capable of blocking at least a portion of the plurality of jet streams within a smooth flow region distance. (2) The spray device according to claim 1, wherein the nozzle is a single nozzle having a radial nozzle opening. (3) The control section is capable of sequentially increasing and decreasing the number of blocked jets by moving the control section.
Spraying device as described in section. (4) The spray device according to claim 1, 2, or 3, wherein the collision part and the blocking part are integrally configured and can operate simultaneously.