JP4614488B2 - Fountain equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fountain apparatus that can form a fountain by discharging water filled in a water charge tank from a nozzle with high-pressure air.
[0002]
[Prior art]
An example of this type of fountain apparatus is described in Japanese Patent Laid-Open No. 3-77666. In this fountain device, a nozzle is arranged on the surface of a fountain pool or in the water, and a check valve is interposed in one opening of a T-shaped coupling connected to the nozzle to drain water in the pool. An inlet for natural inflow is connected, a pipe extending obliquely upward is connected to the other opening, and a high-pressure air supply source is connected to the upstream end of the pipe via a solenoid valve. In the fountain device, water that naturally flows in from an inlet is coupled and stored in a pipe, and the stored water is discharged from a nozzle by high-pressure air.
[0003]
[Problems to be solved by the invention]
However, since the conventional fountain apparatus employs a structure that allows water in the fountain pool to naturally flow from the nozzle inlet, the nozzle must be placed where there is water and the installation location is limited. There is a problem that is.
[0004]
Further, the conventional apparatus has a structure in which water that naturally flows in from the inlet of the nozzle is ejected, and there is a problem that the amount of water ejected is constant and the degree of freedom with respect to the shape and size of the water column is low.
[0005]
On the other hand, in the above-described conventional device, since the impact force acts on the check valve when discharging the stored water in the coupling with high-pressure air, the strength against the impact force of the check valve is increased, or the check valve is It is necessary to adopt a shock absorbing structure. When such a special check valve is designed and manufactured, there arises a problem that the cost increases.
[0006]
The present invention has been made in view of the above-described conventional situation, and can improve the degree of freedom with respect to the installation location and the shape and size of the water column, and can further eliminate the need for a costly check valve. The object is to provide a fountain device.
[0007]
[Means for Solving the Problems]
A nozzle having a jet hole, a water charge tank connected to the nozzle and filled with water, a water supply pump for supplying water via a water supply pipe having a check valve in the water charge tank, and opening and closing the water charge tank An air charge tank connected via a valve, a high-pressure air supply source for supplying high-pressure air to the air charge tank, and a controller for controlling opening / closing of the opening / closing valve, and the nozzle is formed on the outer periphery of the upper surface A flat surface portion and a hemispherical spherical surface portion formed in the center portion, and the flat surface portion is formed such that a large number of ejection holes open vertically upward, and the spherical surface portion has a large number of Are formed so as to open radially in the radial direction, the diameter of the central portion of the spherical portion is larger than that of the outer peripheral portion, and the number of holes per unit area is the outer peripheral portion. It is set smaller than the ejection hole, and the high pressure air in the air charge tank by opening the closing valve of the water in the water charge tank is characterized in that discharging from the ejection hole of the nozzle.
[0008]
According to a second aspect of the present invention, in the first aspect, the air charge tank and the water charge tank are disposed close to each other.
[0009]
According to a third aspect of the present invention, in the first or second aspect, an opening / closing valve is provided in the water supply pipe, and the controller supplies the water supply amount to the water charge tank and the air charge tank via the opening / closing valves. It is characterized by being configured to variably control the air pressure.
[0011]
[Effects of the invention]
According to the fountain device of the present invention, water is supplied to the water charge tank by the water supply pump, so that the nozzle is installed not only in water but also on the ground or in the ground, or in the air. Therefore, the degree of freedom with respect to the nozzle installation location can be improved.
[0012]
In addition, since water is supplied to the water charge tank by the water supply pump, the impact force caused by the high-pressure air acting on the check valve can be reduced by the water supply pressure from the water supply pump, and a commercially available check valve is adopted. Therefore, the cost can be reduced as compared with the case where a conventional special check valve is designed and manufactured. Furthermore, a hemispherical spherical surface portion is formed in the nozzle, and the number of holes per unit area is made smaller than the diameter of the outer peripheral portion of the ejection hole at the central portion of the spherical surface portion and smaller than that of the outer peripheral portion. Therefore, the discharge height of the water discharged from the nozzle can be increased, the water column can be thickened, and the appearance can be improved.
[0013]
In the invention of claim 2, since the air charge tank and the water charge tank are arranged close to each other, the length of the pipe communicating the both charge tanks can be shortened and high-pressure air is supplied to the water charge tank. Can improve the response when responding.
[0014]
In the invention of claim 3, since the water supply pipe is provided with an open / close valve, and the water supply amount to the water charge tank is variably controlled by the open / close valve, the water supply amount to the water charge tank is increased or decreased, The shape, size, and height of the water column can be arbitrarily set, and the degree of freedom with respect to fountain modeling, which has been difficult with conventional water supply by natural inflow, can be improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0017]
1 to 5 are diagrams for explaining a fountain device according to an embodiment of the present invention. FIG. 1 is an overall configuration diagram of the fountain device, FIG. 2 is a side view of a fountain unit of the fountain device, and FIG. FIG. 4 is a partial cross-sectional front view of the nozzle, and FIG. 5 is a plan view of the nozzle.
[0018]
In the figure, reference numeral 1 denotes a fountain device, which includes two fountain units 2, 2, a compression unit 3, a water supply unit 4, and a control unit 5.
[0019]
Each fountain unit 2 has a water charge tank 7 connected to the nozzle 6 and an air charge tank 8 connected to the water charge tank 7. Each of the charge tanks 7 and 8 has a cylindrical shape having substantially the same capacity, and is arranged in parallel with the axes oriented horizontally and close to each other, and a U-shaped bolt is attached to a support metal 9 fixed to the ground. 10 is fixed.
[0020]
The nozzle 6 is connected to one end surface (downstream end) of the water charge tank 7 through a joint pipe 11, and the nozzle 6 is disposed with its axis line oriented vertically. The other end portion (upstream portion) of the water charge tank 7 opposite to the nozzle 6 and the air charge tank 8 are connected in communication by a high pressure air supply pipe 12, and a solenoid valve 13 is connected to the high pressure air supply pipe 12. Is installed.
[0021]
The nozzle 6 is of a dome type and has a structure in which a flat surface portion 15a is formed on the outer peripheral portion of the upper surface of a nozzle body 15 made of a hollow cylindrical body, and a hemispherical spherical surface portion 15b is formed in the central portion. A large number of ejection holes 16 are formed in the flat portion 15a so as to open vertically upward. The ejection holes 16 have a small hole 16a having a diameter of 6 mm and a large hole 16b having a diameter of 8 mm having a predetermined interval in the circumferential direction. They are alternately formed.
[0022]
The spherical portion 15b is formed with a large number of ejection holes 17 that are opened radially in the radial direction. The ejection hole 17 has a small hole 17a having a diameter of 6 mmφ formed in the outer peripheral portion of the spherical portion 15b and a large hole 17b having a diameter of 8 mmφ formed in the center. The large holes 17b are set to have a smaller number of holes per unit area than the small holes 17a. Specifically, there are five large holes 17b for 32 small holes 17a. The diameters and numbers of the small holes 17a and the large holes 17b are merely examples, and are not limited to these numerical values. In short, the ejection hole at the center of the spherical surface portion 15b may be larger than the outer peripheral portion and the number per unit area may be reduced.
[0023]
The dome-shaped nozzle 6 of the present embodiment has the appearance that the water discharged from the flat surface portion 15a extends vertically upward, the water discharged from the spherical surface portion 15b extends radially in the radial direction, and the fountain shape as a whole is an inverted conical shape. It is set to make.
[0024]
The compression unit 3 and the control unit 5 are accommodated in an operation control room 19 installed at a location away from the fountain units 2 and 2. The compression unit 3 includes a compressor 20 including a compression pump 20a that compresses air and a storage tank 20b that stores high-pressure air. An air pipe 21 is connected to the air discharge port of the compressor 20, and the air pipe 21 is divided on the way and connected to the air charge tanks 8 and 8. Reference numeral 22 denotes a pressure gauge connected to the upstream side of the air pipe 21.
[0025]
The water supply unit 4 is provided independently from the fountain units 2 and 2, and is configured by disposing a water supply pump 26 in a water storage tank 25 filled with water. A water supply pipe 27 is connected to the discharge port of the water supply pump 26, and the water supply pipe 27 is divided on the way and connected to each water charge tank 7. A check valve 28 is provided in the vicinity of the water charge tank 7 on the downstream side of each water supply pipe 27 to prevent the backflow of water from the water charge tank side. A solenoid is provided on the upstream side of the check valve 28. A valve 29 is interposed.
[0026]
The control unit 5 is configured to open and close the solenoid valves 13 and 29 based on a preset program and to drive and control the compressor 20 and the water supply pump 26. This program is set to control the amount of water supplied to the water charge tank 7 and the air pressure to the air charge tank 8 in accordance with, for example, light or music.
[0027]
Next, the effect of this embodiment is demonstrated.
[0028]
The fountain device 1 according to the present embodiment is installed in an amusement park, a park, or the like. For example, the fountain unit 2 is installed on the ground, and the fountain unit 2 is covered with the suspicious rock 30 so that an appearance like a volcano can be produced. .
[0029]
The water charge tank 7 is filled with water by the water supply pump 26, and the air charge tank 8 is filled with high-pressure air by the compressor 20. In this state, by controlling the opening and closing of each solenoid valve 13 according to the program, a water column is ejected from the suspicious rock 30 like an eruption. The ejected water is collected in the pit 31 and returned to the drainage or water storage tank 25 through the drain pipe 32.
[0030]
According to the fountain device 1 of the present embodiment, the water storage tank 25 is provided independently at a place away from the fountain unit 2, and the water charge tank 26 stores the water stored in the water storage tank 25 through the water supply pipe 27. 7, the nozzle 6 can be installed on the ground, and the degree of freedom with respect to the nozzle installation location can be improved accordingly.
[0031]
Further, since water is supplied to the water charge tank 7 by the water supply pump 26, even if the impact force due to the high pressure air from the air charge tank 8 acts on the check valve 28, the impact force is supplied to the water supply pressure from the water supply pump 26. Therefore, it becomes possible to employ a commercially available check valve, and the cost can be reduced as compared with the case of designing and manufacturing a conventional special check valve.
[0032]
In the present embodiment, since the water charge tank 7 and the air charge tank 8 are arranged close to each other, the axial length of the high-pressure air supply pipe 12 communicating with both charge tanks can be shortened, and the water charge tank 7 The response when supplying high-pressure air to can be improved.
[0033]
In the present embodiment, the solenoid valve 29 is provided downstream of the water supply pipe 27, and the water supply amount to the water charge tank 7 is variably controlled by the control unit 5 via the solenoid valve 29. By increasing / decreasing the amount of water supply to 7, the shape, size, and height of the water column can be arbitrarily set, and the degree of freedom with respect to fountain modeling, which has been difficult with conventional natural water inflow, can be improved.
[0034]
In this embodiment, a hemispherical spherical surface portion 15b is formed in the nozzle body 15, and the ejection hole 17 of the spherical surface portion 15b is larger in the central hole 17b than the small hole 17b in the outer peripheral portion and has a smaller number of holes. Since it set so, while the discharge height of the water column from the nozzle 6 can be made high, the thickness of the water column can be made thick and appearance can be improved.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram for explaining a fountain device according to an embodiment of the present invention.
FIG. 2 is a side view of a fountain unit of the fountain device.
FIG. 3 is a plan view of the fountain unit.
FIG. 4 is a partial cross-sectional front view of a nozzle of the fountain device.
FIG. 5 is a plan view of the nozzle .

Claims (3)

A nozzle having an ejection hole, a water charge tank connected to the nozzle and filled with water, a water supply pump for supplying water via a water supply pipe having a check valve in the water charge tank, and opening and closing the water charge tank An air charge tank connected via a valve, a high-pressure air supply source that supplies high-pressure air to the air charge tank, and a controller that controls opening and closing of the open / close valve,
The nozzle has a flat surface portion formed on the outer peripheral portion of the upper surface and a hemispherical spherical surface portion formed in the center portion, and a large number of ejection holes open vertically upward in the flat surface portion. The spherical portion is formed such that a large number of ejection holes are radially opened in the radial direction, and the diameter of the ejection hole at the center of the spherical portion is larger than that of the outer circumferential portion, and per unit area. The number of holes is set smaller than the outer peripheral ejection holes,
A fountain apparatus characterized in that the water in the water charge tank is discharged from the nozzle orifice by the high-pressure air in the air charge tank by opening the open / close valve.  2. The fountain apparatus according to claim 1, wherein the air charge tank and the water charge tank are disposed close to each other. 3. The open / close valve is provided in the water supply pipe according to claim 1 or 2, and the controller variably controls the amount of water supplied to the water charge tank and the air pressure to the air charge tank via the open / close valves. The fountain apparatus is characterized by being configured as described above.

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