KR20160032621A - Large rainbow generating apparatus - Google Patents

Abstract

The technological purpose of the present invention is to provide a large rainbow generator which can generate a large rainbow with a natural appearance while the large rainbow generator has minimized constituent components. The large rainbow generator includes: a first spraying gun and a second spraying gun which are arranged to be horizontally symmetrical and spray water drops; a water tank which stores water; a main pipe which connects the first spraying gun and the second spraying gun to the water tank; a pump which discharges the water in the water tank to the first spraying gun and the second spraying gun; and a control unit which controls the pump.

Description

[0001] Large rainbow generating apparatus [0002]

The present invention relates to a rainbow generating device for producing a rainbow.

Generally, a rainbow is created when an observer follows the sun and looks at a large group of droplets, and the light refracted by the droplets forms on the retina. The larger the size of the group of droplets, ie, their width, depth, and length, the larger rainbow is created that can be seen from afar. Of course, by spraying water droplets by installing multiple water droplet ejectors in a large area, you can create a droplet group with a large length and width.

However, in this case, it is very difficult to install a water droplet jetting system including a plurality of water droplet jetting devices, and it is difficult to maintain and manage the water droplet jetting system.

Also, as shown in Table 1 below, the color distribution of the rainbow is not always the same, but it depends on the size of the droplets that make up the droplet group. The ability to differentiate the color distribution of a rainbow means that a rainbow can be installed (created) at different places when it is installed (created) in various places. Therefore, It plays an important role in raising the value and raising the unit price.

Water droplet size (diameter) Rainbow color 1 to 2 mm Purple and green are very crisp. Including pure red. Blue is not good 0.5 mm Rainbow with a red color. The accompanying rainbow is yellow 0.2 to 0.3 mm Rainbow without red 0.08 to 0.10 mm The width of the rainbow is wide and the color saturation is low. The accompanying rainbow is generated quite distant from the primary rainbow and appears white Not more than 0.05 mm Fog rainbow A very small droplet No rainbow formed (visible as cloud)

On the other hand, according to the prior art, the rainbow phenomenon generating apparatus disclosed in U.S. Patent No. 4,002,333, as shown in Fig. 1, forms a passage in which an arcuate mechanical device is hollow, and nozzles are installed in the wall of the passage Water droplets are injected into the passage. In addition, a color panel is installed on the wall to create a rainbow color and project rainbow colors onto a collection of water droplets (called a "water curtain" or "water screen") of the passage. Thus, the observer can appreciate the rainbow color projected on the water curtain while moving this passage. However, this color is not a color refracted by the droplet itself, so it is not a real rainbow.

In another prior art, a rainbow-generating device disclosed in U.S. Patent No. 4,975,811, as shown in Fig. 2, is provided with a semi-cylindrical mirror at the bottom of the fountain to reflect the artificial light coming from the side in all directions perpendicular to the cylinder . In addition, water drops formed by the nozzles installed on the bottom of the fountain block refract the reflected light in the sight direction to form a rainbow. Therefore, when the viewpoint of the observer is positioned at a position where the angle between the ray of light incident on the water drop and the ray of light reflected by the water drop is 40 to 42 degrees, the rainbow is perceived. However, this perceived rainbow has the disadvantage that it is not a natural rainbow formed by the feature background.

In another conventional art, the artificial rainbow device disclosed in US2005 / 0024892A1 has a structure in the air as shown in Fig. 3, and a nozzle is installed thereon to spray water droplets. In addition, the droplet ejector changes its position in consideration of the position of the sun and the position of the observer. Thus, the observer looks at the rainbow produced in the observation zone with the appropriate height. However, natural rainbows are produced, but they are disadvantageous because they are not natural rainbows because of the considerable scale of artificial machinery.

4, the rainbow automatic generation system disclosed in Korean Patent Laid-Open No. 10-2011-0126331 includes a cylindrical housing 110 rotatable in the up and down and left and right directions, (Not shown) that generates a wind pressure by turning a propeller to increase the jetting distance of water droplets. When using a jetting device, rotate the housing to the sun's incident angle (ie, the altitude of the sun) and then spray water droplets. FIG. 5 is an illustration of an example of creating a rainbow using the jetting device, not a photograph taken after the creation of the rainbow, but imagining a rainbow that is much longer than the width of the droplet group ejected from the jetting device It will be painted. In reality, only a central part of the rainbow is formed, that is, the rainbow is floating in the air, and the sides of the rainbow do not touch the ground. For reference, a rainbow should be created as if it rose from the ground, but it is not easy to do so. This will depend on the performance of the unit, but assuming adequate performance, you will need to list 10 or more jets in the horizontal direction

However, listing such a large number of injection devices has a problem of inconveniences in installation, increase in cost, and difficulty in maintenance. 5, it is assumed that the observer observes the rainbow behind the spraying device. However, when a plurality of spraying devices are listed, there is a problem that the cosmetic is not good. There may be a partition wall in front of the injectors in order to make the sprayer invisible, but there is an artificial wall in front of the observers, which makes the observer feel cramped. In addition, when the wall is set up, there is a problem that the part where the rainbow is rising from the ground can not be seen, and the effect of viewing the rainbow is also deteriorated.

1. US registered patent US 4,002,333 (registered on January 11, 1977) 2. US registered patent US 4,975,811 (registered on December 4, 1990) 3. US Published Patent US 2005/0024892 A1 (Published on February 3, 2005) 4. Korean Patent Publication No. 10-2011-0126331 (Published on November 23, 2011)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a large rainbow generating device capable of generating a natural large rainbow while minimizing components.

It is another object of the present invention to provide a large rainbow generating device capable of generating droplets of different droplet sizes according to the distribution of rainbow colors.

According to an aspect of the present invention, there is provided a large-sized rainbow-generating apparatus, comprising: a first and a second minute event generating units arranged symmetrically with respect to each other to spray water droplets; A water tank in which water is stored; A main pipe connecting the first and second minute events to the water tank; A pump for discharging the water of the water tank into the first and second minute events; And a controller for controlling the pump.

Each of the first and second minute events comprising: a housing having a hollow cylindrical shape and including an inlet end and an outlet end; A blower installed inside the housing to apply a blowing force from the inlet end to the outlet end; A plurality of annular piping disposed around the outlet end of the housing and concentric with the outlet end and connected to the main piping; And a plurality of nozzles provided at intervals along the circumferential direction in each of the plurality of annular pipes.

The outlet end of the housing may have a smaller diameter than the inlet end.

Wherein the blower further comprises: a blowing motor provided on a central axis of the inside of the housing; A blowing fan coupled to the blowing motor; And a plurality of supports for supporting the blowing motor to the inner wall of the housing.

The distance between the blower motor and the inner wall of the housing may be at least 7 centimeters.

Each of the first and second minute events may further include an air speed sensor provided inside the housing to measure the wind speed of the blower, and the controller may set the air speed measured by the wind speed sensor to a predetermined wind speed range So that the blowing motor can be controlled.

Wherein each of the first and second branch events further includes a valve for opening and closing the plurality of annular pipes, wherein the control unit decreases the discharge water pressure to less than a predetermined water pressure due to the small amount of water supplied to the plurality of annular pipes One or more of the plurality of annular piping can be closed using the valve so that the discharge water pressure is in the range of the set water pressure.

Each of the first and second minute events may further include a pan tilt supporting unit for supporting the housing such that the housing is panned right or left or tilted upward or downward.

The pantiline supporting unit includes: a support bracket rotatably installed in the housing to tilt the housing vertically; And a pressing part provided between the support bracket and the housing and applying a force to tilt the housing.

The pantiline supporting unit may further include a wheel unit that is provided on the bottom surface of the support bracket so as to be rotatable in the left and right direction to move the housing and pans the housing from side to side.

Each of the first and second minute events may further include a whirlpool prevention member provided inside the housing to prevent a whirl phenomenon.

The blowing fan is provided at a front end of the blowing motor with respect to a blowing direction, and the anti-whiplashing member may be provided at a rear end of the blowing motor based on a blowing direction.

The anti-whiplash member may have a conical shape whose diameter gradually decreases in the blowing direction.

At least two types of nozzles having ejection holes of different sizes or different shapes with the plurality of nozzles may be prepared.

Wherein the at least two types of nozzles are detachably provided in the annular pipe among the plurality of annular pipes and the water pressure and the flow rate applied to the annular pipe are adjusted in order to adjust the size of water droplets coming from the plurality of nozzles A nozzle of any one of the two types of nozzles may be selected.

As described above, the large rainbow-generating apparatus according to the embodiment of the present invention can have the following effects.

According to the embodiment of the present invention, the first and second minute events, the water tank, the main pipe, the pump, and the control unit are included, and in particular, the first and second minute events are symmetrical It is possible to create a natural large rainbow by giving a feeling of seeing a natural large rainbow in a hollow space with only two, without using a lot of minute events.

In addition, according to the embodiment of the present invention, since the anti-whiplash member is provided inside the housing, the performance of the minute event can be improved.

According to the embodiment of the present invention, since the valve for opening and closing the plurality of annular pipes is provided, when the discharge water pressure drops below the set water pressure due to the small amount of water supplied to the plurality of annular pipes by the valve and control unit, It is possible to improve the performance of the minute event by making it within the range of the set water pressure.

In addition, according to the embodiment of the present invention, at least two types of nozzles having injection holes of different sizes or different shapes are prepared with a plurality of nozzles, so that the nozzles of different droplet size A droplet group can be created.

FIG. 1 is a view showing an apparatus for generating a rainbow phenomenon according to the related art.
2 is a diagram showing a rainbow-generating apparatus according to another prior art.
Fig. 3 is a diagram showing an apparatus for an artificial rainbow according to still another prior art.
4 is a diagram illustrating a rainbow auto-generation system according to another prior art.
Figure 5 is a view of a rainbow generated by the rainbow auto-generation system of Figure 4;
FIG. 6 is a schematic diagram of a large rainbow generator according to an embodiment of the present invention. Referring to FIG.
FIG. 7 is a perspective view showing a minute event among the large rainbow generating apparatus of FIG. 6; FIG.
FIG. 8 is a perspective view showing a plurality of annular piping placed at the inlet end of the housing during the split event of FIG. 7;
FIG. 9 is a partially cutaway cross-sectional view of the interior of the housing during the split event of FIG. 7;
10 is a schematic view showing a piping structure of the branch event of FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 6 is a schematic view of a large rainbow generating apparatus according to an embodiment of the present invention, FIG. 7 is a perspective view showing a minute event among the large rainbow generating apparatus of FIG. 6, and FIG. And is a perspective view showing a plurality of annular piping placed at the inlet end of the housing.

FIG. 9 is a partially cut-away sectional view showing the interior of the housing during the minute event of FIG. 7, and FIG. 10 is a schematic view of the piping structure of the minute event of FIG.

6 to 10, the large rainbow generating apparatus according to an embodiment of the present invention includes first and second minute events A1 and A2, a water tank 220, a main pipe 230, a pump 240, and a controller 250.

The first and second minute events A1 and A2 spray droplets for generating a rainbow, and are arranged symmetrically to each other as shown in FIG. Therefore, since the first and second minute events (A1) and (A2) are arranged symmetrically with respect to each other, they do not need to use the minute event (A) It is possible to create a natural large rainbow.

6, the water tank 220 is a place where water is confined in order to supply water to the first and second minute events A1 and A2, And serves to guide the movement of water from the water tank 220 to the first and second minute events A1 and A2 by connecting the second minute events A1 and A2 and the water tank 220, 240 applies a pumping force to the water so that the water in the water tank 220 is moved to the first and second minute events A1 and A2 and the control unit 250 controls the pump 240 and the like.

Referring again to Figures 6-10, the first and second minute events A1 and A2 will now be described in more detail.

Each of the first and second branch events A1 and A2 includes a housing 310, a blower 320, a plurality of annular tubing 330, and a plurality of nozzles < RTI ID = 0.0 > 340).

The housing 310 has a hollow cylindrical shape as shown in FIGS. 7 and 9 and includes an inlet end 311 and an outlet end 312. Accordingly, when the blower 320 is operated, the outside air flows into the inlet end 311 of the housing 310 and is discharged through the outlet end 312.

Further, the outlet end 312 of the housing 310 may have a smaller diameter than the inlet end 311. Accordingly, since the pressure of the air discharged through the outlet end 312 of the housing 310 is increased as compared with the inlet end 311, it is possible to form the discharge pressure that can send the air relatively far away.

The blower 320 may be provided inside the housing 310 and designed to apply a blowing force from the inlet end 311 to the outlet end 312 of the housing 310 as shown in Fig. 9, the blower 320 includes a blowing motor 321 provided on the center axis of the inside of the housing 310, a blowing fan 322 connected to the motor shaft of the blowing motor 321, A fan 322 and a plurality of supports 323 for supporting the fan motor 321 on the inner wall of the housing 310. [ Accordingly, when the blowing motor 321 is operated, the blowing fan 322 is rotated to apply the blowing force from the inlet end 311 to the outlet end 312 of the housing 310.

Further, the distance between the air blowing motor 321 and the inner wall of the housing 310 may be at least 7 cm. As a result of the experiment, it was confirmed that the resistance is increased with the flow of air when it is less than 7cm, which is larger than the living noise (noise of less than 60dB at 10m from the incident).

In addition, each of the first and second minute events A1 and A2 includes an air speed sensor 350 provided inside the housing 310 for measuring the air velocity of the blower 320, as shown in FIG. 9 . In this case, the control unit 250 can control the blowing motor 321 so that the wind speed measured by the wind speed sensor 350 falls within the set wind speed range. Here, the set wind speed range may be around 30 m / sec. Experiments have shown that the water droplets discharged in the event (A) can rise up to about 30 m in the vertical direction when the velocity is about 30 m / sec.

In addition, each of the first and second minute events A1 and A2 further includes a whirlpool prevention member 380 provided inside the housing 310 to prevent the whirl phenomenon, as shown in FIG. 9 can do. Accordingly, it is possible to prevent vortex and whirling phenomenon generated in the housing 310 passing through the blowing motor 321, thereby improving the performance of the particulate matter A.

9, the blowing fan 322 is provided at the front end of the blowing motor 321 with respect to the direction in which the blowing fan 322 is blown. The whirlpool prevention member 380 is provided with a blowing motor 321 on the basis of the blowing direction, As shown in FIG. Therefore, since the whirlpool prevention member 380 is located at a point where the whirlpools or the like are generated rapidly as it passes the blowing motor 321, it is possible to maximize the role of preventing the whirlwind.

9, the anti-whiplash member 380 may have a conical shape whose diameter gradually decreases in the blowing direction. It is possible to minimize the resistance to the flow of the air discharged to the rear end of the air blowing motor 321 while preventing the occurrence of the blurring by the anti-whiplashing member 380. [

A plurality of annular piping 330 is disposed around the outlet end 312 of the housing 310 and is concentric with the outlet end 312 and is connected to the main piping 230 Can be connected.

In addition, each of the first and second minute events A1 and A2 further includes a valve 360 for opening and closing a plurality of annular pipes 330, respectively, as shown in Fig. In this case, when the discharge water pressure falls below the predetermined water pressure due to the small amount of water supplied to the plurality of annular pipes 330, the control unit 250 uses the valve 360 to adjust the discharge water pressure At least one of the pipes 330 can be closed. Therefore, the discharge water pressure can be controlled by the set water pressure through the valve 360 and the like, and the performance of the minute event A can be improved.

The plurality of nozzles 340 may be provided at intervals along the circumferential direction of each of the plurality of annular pipes 330 as shown in FIG. In particular, at least two types of nozzles having injection holes of different sizes or different shapes may be prepared for the plurality of nozzles 340. Therefore, since at least two types of nozzles having ejection holes of different sizes or different shapes are prepared by the plurality of nozzles 340, a droplet group of different droplet sizes is generated according to the distribution of rainbow colors . For example, as at least two types of nozzles, a flat type nozzle and a full cone type nozzle, which will be described later, may be used.

In particular, the at least two types of nozzles may be detachably provided in the corresponding annular pipe of the plurality of annular pipes 330. Further, in order to adjust the size of water droplets from the plurality of nozzles 340, any one of the two types of nozzles may be selected in consideration of the hydraulic pressure and the flow rate applied to the annular pipe.

In addition, each of the first and second minute events A1 and A2 includes a housing 310 to pivot the housing 310 to the left or to the right or tilting the housing 310 as shown in FIG. 7, And a pan tilt support unit 370 for supporting the pan tilt support unit 370.

For example, as shown in FIG. 7, the pan tilt support unit 370 includes a support bracket 371 rotatably mounted on the housing 310 to tilt the housing 310 up and down, And a pressing portion 372 provided between the housing 371 and the housing 310 to exert a force to tilt the housing 310. 7, the pressing portion 372 includes a crankshaft 372a that is rotatably provided on the support bracket 371, and a crankshaft 372b having one end rotatably mounted on the outer surface of the crankshaft 372a And a connecting rod 372b rotatably provided at the other end of the housing 310 so that the connecting rod 372b is pulled by the rotation of the crankshaft 372a in order to tilt the housing 310, (Not shown).

7, the pan tilt support unit 370 is rotatably provided on the bottom surface of the support bracket 371 so as to move the housing 310 and to pivot the housing 310 to the left and right And may further include a wheel portion 373.

Referring again to Figs. 6 to 10, the design specifications of the minute event A will be described in more detail.

(1) symmetric arrangement of the first and second minute events (A1) and (A2)

In order to form a group of droplets distributed widely left and right on the basis of the observer, the first and second minute events A1 and A2 are arranged on the left and right sides and droplets are sprayed toward the center upper portion as shown in FIG. Each minute event (A) is designed to allow water droplets to move at a sufficient vertical height (within 30 m) and a sufficient horizontal distance (within 30 m each). This eliminates the need for the observer to observe the rainbow behind the first and second minute events A1 and A2, thus resolving the cosmetic problem. The first and second minute events A1 and A2 arranged on the left and right sides can naturally cover the surrounding features (such as trees), so that the user can feel the rainbow in the empty space. This has significant advantages over the prior art shown in Figures 4 and 5. [ This is because the idea of this prior art was that we had to set the direction of the minute event (the direction in which the water droplets were ejected) according to the altitude of the sun, that is, the incident angle of the sunlight. Adjusting the direction of this injection is necessary to fix the observer at a certain position when creating a rainbow, and to create a rainbow at a certain distance from it. However, since the large-sized rainbow-generating apparatus of the present invention is assumed to observe the rainbow at various positions, and the droplet group is sprayed as wide as possible to the maximum extent, the first and second minute events A1 ) Can be disposed on the left and right, and water droplets can be sprayed toward the center upper portion.

(2) How to increase the performance of minute event (A)

The prior art shown in Figs. 4 and 5 has no description of the internal structure of the minute event, in particular, the manner of operation of the driving unit causing the upward airflow, and there is no description to measure the size of the minute event. Both of these are important factors that determine the performance of the minutes event. Since the present invention is intended to secure the generation of a large rainbow of about 30 m in height and about 60 m in length, performance of the minute event (A) is shown.

1) Structure of Event (A): Event (A) has the structure as shown in Figs. 7 to 9 as a whole, and has the following specifications in detail.

1.1) Diameter of inlet end (311) of case (A): Approximately 1.2m

1.2) Diameter of the outlet end (312) of the minute event (A): around 0.7m

1.3) Total length of case (A): Approximately 2.5 m

1,4) Blower 320 for generating a rising airflow: The blowing event (A) must be equipped with a high-performance blower 320 that generates a fast rising airflow of about 30 m / sec.

1.5) Power input to event (A): A power distribution device (not shown) must be provided to distribute the power required to operate blower 320.

1.6) Internal piping in the case (A) (390 in Fig. 10): The piping case (A) must have an internal piping 390 capable of withstanding a high pressure of about 20 bar supplied from the water tank 220.

2) Motion structure of minute event (A): Minute event (A) has the following functions as it should be easy to move on the ground for field installation.

2.1) The housing 310, which is one of the mechanical devices of the case A, is assembled and fixed on the wheel portion 373 of the three-wheel structure as shown in Fig. Of the wheel portions 373 of the three-wheel structure, the two rear wheels 373b on the rear side are fixed type, and one front wheel 373a is designed so that the minute event A can be switched in the left and right direction.

2.2) The housing 310 fixed on the wheel portion 373 of the three-wheel structure is designed to be adjustable up and down, right and left.

3) Droplet Injection Capability Requirements of Partial Event (A)

3.1) Allows various nozzles to be replaced (see FIG. 8)

The nozzle 340 is attached to a plurality of (three in and one out) annular piping 330 concentrically disposed at the outlet end 312 of the housing 310.

- 20 inner and outer nozzles (340) can be mounted per annular pipe (330). Particularly, it is possible to manufacture 100 or more nozzles 340 on three or more inner and outer annular piping 330 so that the annular piping 330 actually used can be set to be on or off according to the hydraulic pressure and flow rate acting on the minute event A / Off (ON / OFF).

- In order to generate a large rainbow, the spray event (A) is capable of spraying 20 to 40 tons of water per hour. When the supplied amount becomes small, the internal pipe 390 or the annular pipe 330 of the branch event A is turned on / off, or the nozzle attached to the pipe is turned on / off (ON / OFF) .

3.3) Injection height: The vertical spraying ability of the minute event (A) is about 30 m.

3.4) The internal piping (390) installed inside the case (A) shall be capable of supporting it when the pressure of the water passing through it is 20 bar. The fluid pressure in the inner pipe 390 of this branch event A is determined by the head of the pump 240 supplying water to the branch event A, the size and number of the nozzle holes, Resistance and the like.

4) Structure of the blower 320:

4.1) The blower 320 is designed as shown in FIG. The speed of the wind exiting the blower 320 is about 30 meters per second when measured at the outlet end of the minute event (A). The wind speed sensor 350 is mounted to regulate the wind speed from the blower 320.

4.2) The power required to operate the blower 320 is within 15 kW.

4.3) Noise of blower 320: The noise of blower 320 used in case (A) should be such that the noise at the point 10m away from case (A) does not exceed 60dB of life noise.

4.4) When a blowing motor 321 that rotates the rotating shaft of the blower 320 is installed in the center of the inside of the housing 310 in FIG. 9, a plurality of supports 323 (323) connecting the blowing motor 321 and the inner wall of the housing 310 ) Is required. The plurality of supports 323 should be designed to improve the straightness of the wind. At this time, if the distance between the air blowing motor 321 and the support base 323 is too small, a lot of noise is generated, so that the distance between the two is at least 7 cm.

10, an internal pipe 390 connected to the main pipe 230 and a plurality of annular pipes 330 connected to the internal pipe 390 are connected to each other. Lt; / RTI > The inner pipe 390 is composed of an inlet pipe 391 and a branch pipe 392 branched from the inlet pipe 391 to the plurality of annular pipes 330.

(3) Adjusting the droplet size

As shown in Table 1, depending on the size of the droplet to be sprayed, the color distribution of the rainbow varies. This is a very important factor in raising the artistic value of the rainbow by creating a unique rainbow in each place. Accordingly, the large-scale rainbow-generating apparatus of the present invention has a technique of generating water droplets having a specific size as necessary.

This results in the question of what kind of nozzle should be used and how much pressure and flow should be applied. Therefore, data on the relation between the water pressure, the size of the water droplet, and the flow rate of water are required. A series of experiments were performed to obtain this data. The experimental results are as follows.

1) Nozzle type: Based on the information provided in the nozzle catalog, a full nozzle for spraying a water droplet in a circular shape and a flat nozzle for spraying in a thin surface shape were selected and tested. Tables 2 and 3 were generated by measuring the droplet particle size according to the pressure and the flow rate with a special device while adjusting the applied water pressure for each nozzle type.

2) How to use Tables 2 and 3

For example, if you want to create a droplet population with an average particle diameter of 0.7 mm, use a flat nozzle type and apply a pressure of 0.5 bar and a flow rate of 6.4 lpm to the nozzle. The large rainbow-generating device of the present invention is able to determine a suitable nozzle and a pressure to be applied to each nozzle so as to generate a droplet group having a variety of sizes. The water pressure is generated by the pump 240 connected to the water tank 220. The water pressure is reduced through the main pipe 230 and the water is depressurized and the water is introduced into the inlet pipe 391 And is decompressed when it is again distributed to the branch pipe 392. When the pressure applied to the nozzle 340 is applied, the pressure is regulated to a fine degree by using the pressure control valve 360 attached to the branch pipe 392 or the annular pipe 330.

Experiment result data 1. Nozzle type (flat nozzle) Average particle size (diameter: mm) Pressure (bar) Flow rate (lpm, liter per minute) 0.7 0.5 6.4 0.6 0.6 6.9 0.54 0.8 8.2 0.52 One 9 0.47 2 13.1 0.42 6 15.7 0.41 4 18.2 0.37 7 24

Experiment result data 2. Nozzle type (full nozzle) Average Particle Size (mm) Pressure (bar) Flow rate (lpm) 0.58 0.5 6.8 0.49 0.8 8.7 0.49 One 9.8 0.40 1.5 11.7 0.37 2 13 0.31 3 15.3 0.23 5 18.7 0.19 7 24.1

Tables 2 and 3 describe the average droplet size according to water pressure and flow rate for each nozzle.

The above data can also be used to adjust the total amount of water used in the minute event (A). Since the amount of water that can be supplied per hour is often limited, the nozzle type should be determined in consideration of actual injection. If the water pressure applied to the flat nozzle is 7 bar, the flow rate of the injected water can be calculated as follows.

Applying 7 bar to this nozzle, the flow rate per nozzle is 24 l / min according to Table 3. After one hour of operation, 24 * 60 l / h = 1,440 l / h = 1,440 kg / h = 1.44 ton / h. For reference, 1 liter of water = 1000 g = 1 kg.

When 22 nozzles are used, total flow rate = 1,440 * 22 l / h = 31,680 kg / h = 31.680 ton / h = about 31 tons per hour. If the flow rate per hour is less than this, another nozzle should be used.

As described above, the large rainbow-generating apparatus according to the embodiment of the present invention can have the following effects.

According to an embodiment of the present invention, the first and second minute events A1 and A2, the water tank 220, the main pipe 230, the pump 240, and the control unit 250 In particular, since the first and second minute events (A1) and (A2) are arranged symmetrically with respect to each other in the left and right direction rather than the middle, water drops are sprayed, You can create a natural large rainbow that gives you the feeling of seeing a natural large rainbow in the empty space.

According to an embodiment of the present invention, the anti-whiplash preventing member 380 is provided inside the housing 310, so that the performance of the minute event A can be improved.

According to an embodiment of the present invention, since the valve 360 for opening and closing the plurality of annular pipes 330 is provided, the valve 360 and the control unit 250 supply the annular pipes 330 to the plurality of annular pipes 330 When the discharge water pressure drops below the set water pressure due to the small amount of water, the discharge water pressure is in the range of the set water pressure, so that the performance of the minute event (A) can be improved.

In addition, according to the embodiment of the present invention, at least two types of nozzles having injection holes of different sizes or different shapes are prepared for the plurality of nozzles 340, Another droplet size droplet group can be generated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

A: minute event A1: 1st minute case
A2: The second minute Case 220: Water tank
230: main piping 240: pump
250: control unit 310: housing
311: inlet end 312: outlet end
320: blower 321: blower motor
322: a blower fan 323: a plurality of supports
330: plural annular piping 340: plural nozzles
350: wind speed sensor 360: valve
370: Pan tilt support unit 371: Support bracket
372: Pressurizing portion 372a: Crankshaft
372b: connecting rod 373:
373a: front wheel 373b: rear wheel
380: anti-whiplash member 390: internal piping
391: inlet pipe 392: branch pipe

Claims (15)

With a large rainbow generator,
First and second minute events which are arranged symmetrically with respect to each other and emit water droplets;
A water tank in which water is stored;
A main pipe connecting the first and second minute events to the water tank;
A pump for discharging the water of the water tank into the first and second minute events; And
A control unit
The rainbow generating device comprising: The method of claim 1,
Wherein each of the first and second minutes events comprises:
A housing having a hollow cylindrical shape and including an inlet end and an outlet end;
A blower installed inside the housing to apply a blowing force from the inlet end to the outlet end;
A plurality of annular piping disposed around the outlet end of the housing and concentric with the outlet end and connected to the main piping; And
A plurality of annular pipes each having a plurality of nozzles provided at intervals in the circumferential direction thereof,
The rainbow generating device comprising: 3. The method of claim 2,
Wherein the outlet end of the housing has a smaller diameter than the inlet end
Large rainbow generator. 3. The method of claim 2,
Wherein the blower comprises:
A blowing motor provided on a central axis of the inside of the housing;
A blowing fan coupled to the blowing motor; And
A plurality of supports for supporting the blowing motor to the inner wall of the housing;
The rainbow generating device comprising: 5. The method of claim 4,
Wherein the distance between the blower motor and the inner wall of the housing is at least 7 centimeters
Large rainbow generator. 5. The method of claim 4,
Each of the first and second minutes events
Further comprising an air speed sensor provided inside the housing for measuring an air speed of the blower,
The control unit controls the blowing motor so that the wind speed measured by the wind speed sensor falls within the set wind speed range
Large rainbow generator. 3. The method of claim 2,
Each of the first and second minutes events
Further comprising a valve for opening and closing the plurality of annular pipes respectively,
Wherein the control unit controls the valve so that at least one of the plurality of annular pipes is closed using the valve so that the discharge water pressure is in the range of the set water pressure when the discharge water pressure falls below the set water pressure due to the small amount of water supplied to the plurality of annular pipes
Large rainbow generator. 3. The method of claim 2,
Each of the first and second minutes events
Further comprising a pan tilt support unit for supporting the housing such that the housing is panned left or right or tilted up and down
Large rainbow generator. 9. The method of claim 8,
Wherein the pan tilt support unit comprises:
A support bracket rotatably installed in the housing to tilt the housing vertically; And
And a pressing portion provided between the support bracket and the housing for applying a force to tilt the housing,
The rainbow generating device comprising: The method of claim 9,
The pan tilt support unit
A support bracket rotatably supported on a bottom surface of the support bracket so as to move the housing and to pivot the housing from side to side,
Further comprising: 5. The method of claim 4,
Wherein each of the first and second minutes events comprises:
Preventing member provided inside the housing to prevent a phenomenon of a whirling phenomenon
Further comprising: 12. The method of claim 11,
Wherein the blowing fan is provided at a front end of the blowing motor with respect to a blowing direction,
The whirl-preventive member is provided at a rear end of the blowing motor with respect to a direction in which air is blown
Large rainbow generator. The method of claim 12,
The anti-whiplash member
And having a conical shape whose diameter gradually decreases in the blowing direction
Large rainbow generator. 3. The method of claim 2,
With the plurality of nozzles,
At least two types of nozzles having ejection holes of different sizes or different shapes are prepared
Large rainbow generator. The method of claim 14,
Wherein the at least two types of nozzles are detachably mounted on the annular pipe among the plurality of annular pipes,
A nozzle of any one of the at least two types of nozzles is selected in consideration of a hydraulic pressure and a flow rate applied to the annular pipe to adjust the size of water droplets coming from the plurality of nozzles
Large ignition source generating device.

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