TWI586257B - Droplet generator - Google Patents

Description

Droplet generating device

The present disclosure relates to a droplet generating device, and more particularly to utilizing the impact characteristics of aerosol to filter the particle size of a spray generated by a conventional nozzle method, and to control the particle size to a desired range, and the cost is low. Droplet generating device.

For some plant growers, it is necessary to control the size of the droplets sprayed onto the plants in order to obtain the most appropriate moisture for the plants. For example, the cultivation of crops such as mushroom, strawberry or orchid.

For example, the cultivation of mushrooms such as Flammulina or Tremella or strawberries or orchids requires a "smog" growth environment, which is used to moisturize plants on the one hand and to cool down on the other (in summer). However, the size of the droplets sprayed by the conventional spray device is too large, and the humidity control is not ideal. If the particle size of the droplet is too large, it will easily settle on the surface of the plant due to gravity and will not be able to dissipate heat, thus causing ulceration or disease of the plant, such as gray mold, fruit rot, powdery mildew and the like.

Further, in the case of a conventional nozzle spray device, the nozzle used includes a fluid nozzle and a two-fluid nozzle.

A fluid nozzle device filters a fluid, pressurizes it by high pressure pumping, and then outputs a spray from the nozzle. The droplet diameter produced by the droplet is larger than 50 μm, and the droplet of the diameter of the two-fluid nozzle is not suitable for, for example, mushroom, strawberry or orchid. Cultivation of things.

Secondly, the two-fluid nozzle device filters the fluid and pressurizes it by high-pressure pumping. The pressurized fluid is mixed with the injected compressed air in the two-fluid nozzle chamber and finally ejected by the nozzle. The droplet size produced can be as small as about 10 μm, but the construction cost of the two-fluid nozzle and its associated hardware (such as air compressor, high pressure pump) is high.

In addition, a centrifugal humidifier is known which uses a centrifugal turntable to rotate at a high speed to force the fluid to be forced out on the atomizing disk, atomize the fluid into fine particles, and then eject it. However, the droplet size produced by the droplets is in the range of 200 μm or more, which is a spray of large particles, and is extremely unsuitable for cultivation of crops such as mushroom, strawberry or orchid.

In addition, a supersonic oscillating water mist generator is used to push a liquid surface upward to form a liquid column by ultrasonic vibration in a liquid, and the surface liquid at the uppermost position of the liquid column collides with each other to break the surface tension of the liquid, so that The liquid is micronized and scattered in the air. However, the particle size range of the droplets produced is 70-200 μm, which is not suitable for the cultivation of crops such as mushroom, strawberry or orchid, and the driven oscillating sheet is a consumable material, which needs to be replaced for a period of time and has high cost.

Therefore, how to have a "droplet generating device" capable of controlling the particle size to a desired range and having a low cost is an object to be solved in the related art.

In an embodiment, the present disclosure provides a droplet generating device comprising: a main body having a semicircular arc-shaped spherical shape; an arc-shaped convex spherical surface disposed in the main body; and a nozzle disposed on the circular convex spherical surface Below, it has a discharge port and is connected to a fluid source, and the nozzle sprays the fluid source fluid through the discharge port to the arc convex surface. Produce multiple droplets.

100, 100A‧‧‧ fog drop generating device

10, 10A, 10B, 10C‧‧‧ subjects

11, 11A‧‧‧ space

12, 12A‧‧‧ holes

13, 13A‧‧‧ inner side wall

14‧‧‧ tablet

20, 20A‧‧‧ arc convex surface

30, 30A‧‧‧ nozzle

31, 31A‧‧‧ spout

32‧‧‧pipe

40A‧‧‧ tablet

D1‧‧‧ first fog

D2‧‧‧Second fog

F1‧‧‧ first direction

F2‧‧‧ opposite direction

F3‧‧‧Spray direction

Θ‧‧‧ angle

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present disclosure.

FIG. 2 is a schematic view showing the working state of the embodiment of FIG. 1. FIG.

FIG. 3 is a schematic cross-sectional structural view of the embodiment of FIG. 1 without a flat plate. FIG.

Figure 4 is a schematic view showing the working state of the embodiment of Figure 3.

FIG. 5 is a schematic cross-sectional structural view of another embodiment of the present disclosure.

Figure 6 is a schematic view showing the working state of the embodiment of Figure 5.

7 and 8 are schematic structural views of different embodiments of the main body of the present disclosure.

Please refer to the embodiment shown in FIGS. 1 and 2. The droplet generating device 100 includes a main body 10, an arcuate convex surface 20, a flat plate 14, and a nozzle 30.

The main body 10 has a semi-circular concave spherical shape and a hole 12 is formed on a flat plate 14. The flat plate 14 is concavely spherically connected with the lower end of the main body 10 to form a space 11 which penetrates the flat plate 14 and communicates with the space 11. In the present embodiment, the main body 10 assumes a circular arc shape, and besides this, the shape of the space 11 is not limited to a circular arc spherical shape.

The circular arc spherical surface 20 is disposed at the center of the space 11 and the circular convex spherical surface 20 faces the hole 12. In the present embodiment, the arcuate convex spherical surface 20 is an element that can be separated from the main body 10, and in addition, the circular arc convex spherical surface 20 can be integrally formed with the main body 10.

The nozzle 30 is disposed in the space 11 and has a discharge port 31 and is connected by a pipeline 32 to a fluid source (not shown). The fluid source (for example, water) of the fluid source is sprayed toward the fluid outlet 31 through the nozzle 31. Arc convex spherical surface 20. The nozzle 30 can be a fluid nozzle or a two-fluid nozzle.

In addition, the nozzle 30 can be coupled to an adjustment mechanism for adjusting the position of the nozzle 30, including its horizontal and vertical position, and the distance between the discharge port 31 and the arcuate convex surface 20, so that the fluid can be accurately sprayed toward the arc. The apex of the convex spherical surface 20 has the greatest impact on the fluid, which makes the droplet particles more detailed.

When the fluid is ejected from the ejection port 31 in a first direction F1, a plurality of droplets are generated by the impact of the arcuate spherical surface 20, and the droplets having a smaller particle size can be dispersed by the impact characteristics of the aerosol. Outside the main body 10, a mist having a large particle size is left in the main body 10 to achieve the function of automatically screening the droplet particles. For example, the first droplet D1 having a droplet size of less than 50 μm is concentrated in the opposite direction F2 of the discharge port 31 (shown by the curved dotted arrow in FIG. 2) along the impacted airflow to the outside of the body 10 via the hole 12. The second droplet D2 having a droplet size of 50 μm or more is intercepted and attached to the inner side wall 13 of the body 10, and the second droplet D2 is slid down along the inner side wall 13 of the body 10 by gravity, if the body is to be 10 is connected to a recycling device, and the second mist D2 can be collected for recycling and reuse.

The above-mentioned automatic screening of the droplet particles can be achieved by matching the distance of the discharge port 31 with respect to the arcuate convex surface 20, the aperture of the discharge port 31, the discharge velocity of the fluid, and the appropriately sized body 10 and the arcuate convex surface 20. For example, when the diameter of the discharge port 31 is 0.15 mm (mm), the discharge flow rate is 35 m/sec, the distance between the discharge port 31 and the arcuate convex surface 20 is 7.5 mm, and the matching radius is 100 to 150 mm. When the bowl-shaped main body 10 and the arc-shaped convex spherical surface 20 having a radius of 50 mm and a semicircular arc-shaped bowl shape, the first droplet D1 having a droplet size of less than 50 μm can be obtained. In other words, if the above various sizes are adjusted, droplets of different sizes can be obtained.

In addition, with respect to the arrangement of the droplet generating device 100 shown in FIG. 1, the direction in which the fluid is ejected from the ejection port 31 (that is, the first direction F1) and the droplets escape from the main body 10 The direction (i.e., the opposite direction F2) is horizontal, but the angle of the mist generating device 100 can be changed as needed, and is not limited to that shown in Fig. 1, so that the direction in which the droplets escape the body 10 can be changed.

The mist generating device 100 may not be provided with the flat plate 14, so that the generated droplet particles are freely dispersed in the space 11, as shown in the embodiment shown in Figs.

Please refer to the embodiment shown in FIG. 5 and FIG. 6. The droplet generating device 100A includes a main body 10A, an arcuate convex spherical surface 20A, a flat plate 40A, and a nozzle 30A, and their relative positions are arranged similarly to the embodiment shown in FIG.

The main body 10A has a semicircular arc-shaped spherical shape and a plurality of holes 12A are formed in the main body 10A. The flat plate 40A is concavely spherically connected to the lower end of the main body 10A to form a space 11A. The hole 12A penetrates the main body 10A and communicates with the space 11A. In the present embodiment, the main body 10A presents a circular arc-shaped bowl shape, and a plurality of holes 12A are disposed around the nozzle 30A.

The main body 10A is disposed on the flat plate 40A, and the discharge direction F3 of the discharge port 31A is perpendicular to the flat plate 40A. The hole 12A is distributed in the range of 10 to 65 degrees between the center of the nozzle 30A and the flat plate 40A.

When the fluid is ejected from the discharge port 31A in the parallel discharge direction F3, a plurality of droplets are generated by the impact of the arcuate convex surface 20A, and the droplets having a smaller particle size can be dispersed out of the main body 10A by utilizing the impact characteristics of the aerosol. In addition, the droplets having a larger particle size are left in the main body 10A to achieve the function of automatically screening the droplet particles. For example, the first droplet D1 having a droplet size of less than 50 μm may be dissipated outside the body 10A via the hole 12A, and the second droplet D2 having a droplet size of 50 μm or more may be intercepted and attached to the inner side of the body 10A. 13A, the second mist D2 will slide down along the inner side wall 13A of the main body 10A by gravity and be recycled. To prevent larger sizes The second mist D2 escapes to the outside of the main body 10A, so that the size of each of the holes 12A is equal to or smaller than the size of the first mist D1.

Referring to FIGS. 7 and 8, the main body 10B of the embodiment of FIG. 7 has a circular cylindrical shape, and the main body 10C of the embodiment of FIG. 8 has a square tubular shape. The embodiment of Figures 7 and 8 illustrates that the shape of the body of the present disclosure is not limited.

In summary, the present invention provides a droplet generating device that utilizes an impact characteristic of aerosol to screen a particle size of a droplet produced, for example, a droplet having a droplet size of 50 μm or more is intercepted. Attached to the inner side wall of the main body, the droplets with a droplet size of less than 50 μm will be discharged out of the shell along the flow field of the spray, and will be dissipated in the environmental space, which is very suitable for cultivation of crops such as mushroom, strawberry or orchid. If combined with the gas flow distribution controlled by the air conditioner, the present disclosure can achieve a uniform humidity control effect in a plant cultivation environment (such as a greenhouse or a mushroom house). In addition, in the summer with ice water spray, fine droplets can quickly evaporate in the air, local cooling in the vicinity of the planting, and further, because the droplets provided by the disclosure are small, it will not be planted Condensation of water droplets or excessive humidity causes pests and diseases. In addition, if combined with humidity sensing and integrated real-time information, it can promote intelligent crop cultivation.

The specific embodiments described above are only used to illustrate the features and functions of the present disclosure, and are not intended to limit the scope of the disclosure, and may be used without departing from the spirit and scope of the disclosure. Equivalent changes and modifications made to the disclosure disclosed herein are still covered by the scope of the following claims.

100‧‧‧Fog drop generating device

10‧‧‧ Subject

11‧‧‧ Space

12‧‧‧ holes

13‧‧‧ inner side wall

14‧‧‧ tablet

20‧‧‧Arc spherical surface

30‧‧‧Nozzles

31‧‧‧Spray outlet

32‧‧‧pipe

F1‧‧‧ first direction

F2‧‧‧ opposite direction

Claims (10)

A droplet generating device comprises: a main body having a semicircular arc-shaped spherical shape; an arc-shaped convex spherical surface disposed in the main body; and a flat plate which is concavely and spherically connected with the lower end of the main body, forming a a space on which at least one hole is disposed; and a nozzle disposed below the arcuate convex spherical surface, having a discharge port connected to a fluid source, the nozzle spraying the fluid source fluid through the discharge port A plurality of droplets are generated toward the arcuate convex spherical surface, and the droplets are dispersed through the holes. A mist drop generating device comprising: a main body having a semi-circular concave spherical shape, at least one hole is disposed on the main body; a circular arc convex surface disposed in the main body; a flat plate and a lower end of the main body a semi-arc concave spherical connection to form a space; and a nozzle disposed below the circular convex spherical surface, having a discharge port and connected to a fluid source, the nozzle spraying the fluid source fluid through the discharge port A plurality of droplets are generated toward the arcuate convex spherical surface, and the droplets are dispersed through the holes. The droplet generating device of claim 1 or 2, wherein the plurality of droplets comprise a first mist droplet and a second mist droplet. The droplet generating device of claim 3, wherein the first droplet has a size smaller than a size of the second droplet. The droplet generating device of claim 4, wherein the first droplet has a size of less than 50 μm. The droplet generating device of claim 4, wherein the second droplet has a size equal to or greater than 50 μm. The droplet generating device of claim 2, wherein the plurality of holes in the body are disposed around the nozzle, and each of the holes has a size equal to or smaller than a size of the first droplet. The droplet generating device of claim 7, wherein the main body is disposed on a flat plate, the discharge direction of the ejection outlet is perpendicular to the flat plate, and the plurality of holes are distributed at an angle between the center of the nozzle and the plane. It is in the range of 15 to 45 degrees. The droplet generating device of claim 1 or 2, wherein the nozzle is a fluid nozzle or a two-fluid nozzle. The droplet generating device according to claim 1 or 2, wherein the arcuate convex spherical surface is separated from the main body or integrally formed with the main body.