JP2001246296A - Fountain device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a water reservoir part unnecessary and make it possible to repeat a fire work fountain by air pressure and a barlike fountain by pump pressure, and further, shorten a repetitive cycle time of the fire work fountain and the barlike fountain as make continuous time for the barlike fountain adjustable by pump pressure. SOLUTION: A three-way switch valve 9 and a reserve tank 10 are installed in series in a vent pipe 5 between a compressor 5 and a fountain nozzle 2, and a check valve 14 for allowing flow of fountain water W which heads toward the fountain nozzle 2 from the pump 11 side, is provided in a water passage pipe 12 between a pressure feed pump 11 and the fountain nozzle 2. The relationship between an air pressure and the water pressure of the fountain water W is set to be 'the air pressure > the water pressure of the fountain water W'. Then the barlike fountain of a small ejection height H is formed by closing the switch valve 9 to eject the fountain water W from the fountain nozzle 2 and the fire wore fountain of a larger ejection height H1 than the barlike fountain is formed from the fountain nozzle 2 by opening the switch valve 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fountain device which can alternately execute a fireworks fountain using air pressure and a rod-shaped fountain using discharge pressure of a pump.

[0002]

2. Description of the Related Art A fountain device described in Japanese Patent Application Laid-Open No. 3-77666 has been conventionally provided as a fountain device capable of executing a fireworks fountain utilizing air pressure (hereinafter referred to as a fireworks fountain). In this fountain device, as shown in FIG. 9, a plurality of fountain nozzles 51 (only one nozzle 51 is shown in FIG. 9) are provided in a water storage unit 50 such as a pool or a fountain pond. 51 and a T-joint 53, and one side of the T-joint 53 is connected to the T-joint 53.
Is connected to a three-way solenoid valve (three-way switching valve) 57 through a pipe 54, an elbow 55 and a vertical pipe 56 which extend upward from the T-joint.
3 is opened to the water storage section 50 through a check valve 58 and a strainer 59 that allows only the flow toward the third direction, and an air compressor 60 is connected to one port of the three-way switching valve 57, and the three-way switching valve 57 is connected. The other port is open to the atmosphere.

According to this fountain device, before the fountain starts,
The water W is filled by the head of the water storage unit 50 as shown by oblique lines, and the pipe 56 communicates with the atmosphere by the switching operation of the three-way switching valve 57. When the pipe 56 communicates with the air compressor 60 by the operation of the three-way switching valve 57 from this state, high-pressure air is sent into the pipe 56, and FIG.
As shown in (5), the water W in the elbow 55 and the pipe 54 is pressed and spouted from the fountain nozzle 51 to execute the fountain. Then, the three-way switching valve 57 switches the pipe 3
When 6 is communicated with the atmosphere, the head of the water reservoir 50
The check valve 58 is opened as shown in FIG.
Push the water W toward the pipe 52 and the pipe 54,
Finally, the water W is refilled as shown in FIG. 9 to prepare for the next fountain. Therefore, based on the control signal program output to the three-way switching valve 57, it is possible to execute the fireworks fountain giving a feeling that the fireworks are being intermittently launched.

[0004]

However, in the conventional fountain device, the water storage unit 50 such as a pool or a fountain pond is required, and the state of the fountain is limited to only the execution of the fireworks fountain using air pressure. Moreover, since the filling of the water W is performed by opening the check valve 58 by the head of the water storage unit 50, the filling time becomes long. For this reason, the repetition cycle time of the fireworks fountain becomes long, and even if there is a request to repeat the fireworks fountain in a short cycle time, there is a drawback that this request cannot be satisfied.

Accordingly, the present invention eliminates the need for a water storage section such as a pool or a fountain pond, and can repeat fountains having different shapes such as a fireworks fountain using air pressure and a rod-shaped fountain using discharge pressure of a pump. It is another object of the present invention to provide a fountain device capable of shortening the repetition cycle time of the fireworks fountain and the rod-shaped fountain, and capable of adjusting the duration of the rod-shaped fountain using the discharge pressure of the pump.

[0006]

In order to achieve the above object, a fountain device according to the present invention comprises a high-pressure air supply system having a fountain nozzle and a high-pressure air supply source for supplying high-pressure air to the fountain nozzle. And a fountain water supply system having a pump for supplying fountain water to the fountain nozzle, wherein the high-pressure air supply system and the fountain water supply system are joined at the inlet side of the fountain nozzle, The high-pressure air supply system is provided with a switching valve for passing or blocking the flow of high-pressure air toward the fountain nozzle to switch the fountain state between a pneumatic fountain by the high-pressure air supply source and a hydraulic fountain by the pump.
The fountain water supply system is characterized in that a valve for preventing the high-pressure air from flowing is provided.

Further, a three-way switching valve provided with a hole for opening a passage leading to the fountain nozzle to the atmosphere when the valve is closed may be used as the switching valve.

Further, a two-way switching valve may be used as the switching valve.

According to the fountain device according to the first aspect of the invention, when the switching valve is closed in the operating state of the pump, the fountain water is pumped to the fountain water supply system and spouts from the fountain nozzle, and the pump discharges. A rod-shaped fountain with a low ejection height determined by pressure is executed. The duration of the rod-shaped fountain can be arbitrarily adjusted by adjusting the valve closing time of the switching valve.

When the switching valve is opened while the high-pressure air supply source is operating, the fountain water present in the path between the switching valve and the valve is pressed by the high-pressure air and explosively ejects from the fountain nozzle. A fireworks fountain that gives the impression that fireworks are being launched is executed.

That is, by opening and closing the switching valve, fountains having different shapes such as a fireworks fountain having a high jetting height using high-pressure air and a rod-shaped fountain using discharge pressure of a pump can be repeated. Furthermore, these fireworks fountains and rod-shaped fountains can be performed without requiring a water storage unit such as a pool or a fountain pond.

The fireworks fountain utilizing high-pressure air is completed almost instantly immediately after the switching valve is opened. In addition, after completion of the fireworks fountain, the water for the fountain can be positively filled by pumping, so that the repetition cycle time of the fireworks fountain and the rod-shaped fountain can be reduced.

According to the second aspect of the present invention, when the switching valve is constituted by a three-way switching valve, when the valve is closed, a path between the three-way switching valve and the valve is formed through a hole provided in the three-way switching valve. Can be open to the atmosphere. Therefore, a small amount of the fountain water flows out through the holes. This makes it possible to increase the filling amount of the fountain water and to execute the fireworks fountain with a large volume when the three-way switching valve is opened. The duration of the rod-shaped fountain can be arbitrarily adjusted by adjusting the valve closing time of the three-way switching valve. When the rod-shaped fountain is continued, the fountain water flows out through the hole, but if the passage cross-sectional area of the hole is set small, it does not affect the rod-shaped fountain and can be ignored.

When the switching valve is constituted by a two-way switching valve, the leading end of the inflow area of the fountain water when the valve is closed is limited to just before the switching valve.
For this reason, compared with a fountain device using a three-way switching valve,
The filling amount of fountain water is slightly reduced. That is, the fountain water filled by closing the two-way switching valve compresses the air remaining between the two-way switching valve and the junction between the high-pressure air supply system and the fountain water supply system. Therefore, the filling amount of the fountain water is limited before the two-way switching valve in which the residual air is compressed and reaches the equilibrium point with the water pressure of the fountain water and is contained therein. On the other hand, since the compressed air is confined, the switching response to the fireworks fountain when the two-way switching valve is opened can be improved. The duration of the rod fountain is
It can be arbitrarily adjusted by adjusting the valve closing time of the two-way switching valve.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram showing an embodiment of a fountain device according to the present invention.
Is a fountain device, 2 is a fountain nozzle, 3 is a high-pressure air supply system,
Indicates a fountain water supply system.

The high-pressure air supply system 3 is for supplying high-pressure air to the fountain nozzle 2. The high-pressure air supply system 3 is constituted by a ventilation pipe 5 having an air compressor 5 connected to an upstream end thereof. In between, a gate valve 7 from the upstream side to the downstream side, a ball check valve 8 that allows the flow of high-pressure air from the upstream side to the downstream side, and a three-way electromagnetic switching valve 9
(Hereinafter referred to as three-way switching valve 9) and reserve tank 1
0 is provided in series. The three-way switching valve 9 opens the reserve tank 10 to the atmosphere through the small hole 9A in the valve closed state,
With the valve open, the air compressor 5 and the reserve tank 10
Work to communicate. The small hole 9A open to the atmosphere has a passage cross-sectional area set to a value extremely smaller than the passage cross-sectional area of the fountain nozzle 2.

The fountain water supply system 4 is for supplying fountain water to the fountain nozzle 2 and has a pressure pump 1 at its upstream end.
1 through a water pipe 12 communicating with the pressure pump 1
1 and the fountain nozzle 2, a gate valve 13 from the upstream side to the downstream side, allows the flow of fountain water from the upstream side to the downstream side, and the high-pressure air from the high-pressure air supply system 3 receives the high-pressure air from the high-pressure air supply system 3 side ( Check valve 1 to prevent flow into upstream
4 (the ball check valve 14 in this embodiment) is provided in series. The check valve 14 may be replaced by a control valve such as an electromagnetic valve, and by controlling this control valve, the flow of the fountain water from the upstream side to the downstream side is allowed, or the high-pressure air supply The high-pressure air from the system 3 may be prevented from flowing into the pressure pump 11 (upstream side).

The vent pipe 5 and the water pipe 12 join at the inlet side of the fountain nozzle 2, and the fountain nozzle 2 is erected on the floor surface 15 upward. The relationship between the air pressure supplied to the fountain nozzle 2 by the high-pressure air supply system 3 and the water pressure of the fountain water supplied to the fountain nozzle 2 by the fountain water supply system 4 is set to “air pressure> fountain water”. Have been. In addition,
In the figure, reference numeral 16 denotes a drain pipe.

Next, the operation of the above configuration will be described.
The three-way switching valve 9 is closed in the operation state of the pressure pump 11 with the gate valve 13 opened. In the closed state of the three-way switching valve 9, the inside of the high-pressure air supply system 3 closer to the water pipe 12 than the three-way switching valve 9, that is, the inside of the ventilation pipe 6 closer to the water pipe 12 than the three-way switching valve 9 and The inside of the reserve tank 10 is opened to the atmosphere through the small hole 9A of the three-way switching valve 9. For this reason,
As shown in FIG. 1, the fountain water W is supplied to the small holes 9 of the three-way switching valve 9.
A can be filled up to the state of flowing out of the fountain nozzle 2 as shown in FIG.
Fountain water W is spouted from the fountain, and a rod-shaped fountain having a low spouting height H determined by the discharge pressure of the pressure pump 11 is executed. During this time, the gate valve 7 is opened and the operation of the air compressor 5 is started. Of course, at the same time as the operation of the pressure pump 11, the gate valve 7 is opened and the air compressor 5 is opened.
May be started. The gate valves 7 and 13 are manually closed during maintenance of the fountain device 1 or the like.

The state in which the fountain water W flows out of the small hole 9A of the three-way switching valve 9 is detected by a detecting means (not shown), and based on the detection signal, the control means (not shown) sends the water to the three-way switching valve 9. A valve open signal is output to open the valve. When the three-way switching valve 9 is opened, the high-pressure air E supplied by the operation of the air compressor 5 presses the fountain water W due to the pressure difference, and the three-way switching valve 9 turns the ball reverse provided in the water pipe 12. The fountain water W existing between the stop valve 14 and the fountain water in the fountain nozzle 2, more specifically, the fountain water W in the ventilation pipe 6 between the three-way switching valve 9 and the reserve tank 10, and the fountain water W in the reserve tank 10 Fountain water W,
The fountain water W in the vent pipe 6 and the water pipe 12 between the reserve tank 10 and the ball check valve 14, and the fountain nozzle 2
The fountain water W inside the fountain nozzle 2 is explosively ejected from the fountain nozzle 2, and the ejection height H1 (see FIG. 3) is higher than the ejection height H of the rod-shaped fountain caused by the discharge pressure of the pressure pump 11 in FIG. In addition, a fireworks fountain that gives a feeling that the fireworks are being launched is executed.

The fireworks fountain of FIG. 3 utilizing air pressure is completed almost instantly immediately after the three-way switching valve 9 is opened. This completion state is detected by a detection unit (not shown),
Based on this detection signal, the control means (not shown) outputs a valve closing signal to the three-way switching valve 9 to close the valve. Thereby, the inside of the ventilation pipe 6 closer to the water pipe 12 than the three-way switching valve 9 and the inside of the reserve tank 10 are opened to the atmosphere through the small holes 9A, so that the fountain water W flows as shown in FIG. While flowing into the trachea 6 and the reserve tank 10,
After a state in which the fountain water W is slightly ejected from the fountain nozzle 2 in parallel with the inflow operation, the ejection height H shown in FIG.
A low bar fountain. Thereafter, the above operation is repeated.

That is, the three-way switching valve 9 is opened and closed at a predetermined timing by an opening / closing signal output from a control means (not shown), so that the fireworks fountain using the high pressure air E and having a high jetting height H1 and the pressure pump 11 Fountains having different shapes such as a rod-shaped fountain with a low jetting height H using the discharge pressure of the jetting can be repeated, and the jetting height H
Fountain with low water can be continuously performed for a long time. .

By using the three-way switching valve 9, the fountain water W can be filled until the fountain water W flows out of the small hole 9A when the valve is closed. Therefore, the filling amount of the fountain water W existing in the path between the three-way switching valve 9 and the check valve 14 can be increased, and the fireworks fountain with a large volume can be executed when the three-way switching valve 9 is opened. Further, the duration of the rod-shaped fountain can be arbitrarily adjusted by adjusting the valve closing time of the three-way switching valve 9. During the continuation of the rod fountain,
Although the fountain water slightly flows out through the small holes 9A, since the passage cross-sectional area of the small holes 9A is set to an extremely smaller value than the passage cross-sectional area of the fountain nozzle 2, it may affect the rod-shaped fountain. There is no. Therefore, the outflow from the small hole 9A can be ignored. A small amount of water flowing out of the small hole 9A is drained to a drain system (not shown) through the drain pipe 16.

The fireworks fountain of FIG.
Immediately after the three-way switching valve 9 is opened, the process is almost instantaneously completed. In addition, immediately after the completion of the fireworks fountain, the inside of the ventilation pipe 6 closer to the water pipe 12 than the three-way switching valve 9 and the inside of the reserve tank 10 are opened to the atmosphere. In other words, the time for filling the fountain water W before the execution of the fireworks fountain can be reduced. Therefore, it is possible to repeat the fireworks fountain and the rod-shaped fountain in a short cycle time. In addition, the water storage unit 50 such as a pool or a fountain pond, which is required in the conventional fountain device, becomes unnecessary.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a system diagram showing another embodiment of the fountain device according to the present invention. Fountain device 1 shown in FIG.
However, the difference from the fountain device described in the first embodiment of FIGS. 1 to 4 is that a two-way electromagnetic switching valve 17 (hereinafter, referred to as a two-way switching valve 17) is used as a switching valve. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals, and the redundant description of the structure is omitted.

In the configuration shown in FIG. 5, when the two-way switching valve 17 is closed in the operation state of the pressure pump 11 with the gate valve 13 opened, the ventilation pipe 6 closer to the water pipe 12 than the two-way switching valve 17 is closed. The air remaining inside and inside the reserve tank 10 is compressed by the fountain water W. For this reason, the filling amount of the fountain water W
1 reaching the equilibrium point with the hydraulic pressure, i.e., a level slightly below the top of the reserve tank 10. In synchronization with this filling operation, as shown in FIG.
Fountain water W is spouted from the fountain, and a rod-shaped fountain having a low spouting height H determined by the discharge pressure of the pressure pump 11 is executed. During this time, the solenoid valve 7 is opened and the operation of the air compressor 5 is started. Of course, at the same time as the operation of the pressure pump 11, the solenoid valve 7 is opened and the air compressor 5 is opened.
May be started.

A state in which the fountain water W has flowed to a level slightly lower than the top of the reserve tank 10 is detected by detecting means (not shown), and the control means (not shown) sends a two-way switching valve 17 based on the detection signal. To output a valve opening signal to open the valve. When the two-way switching valve 17 opens, the high-pressure air E supplied by the operation of the air compressor 5 becomes:
The fountain water W flowing to the lower part of the top of the reserve tank 10 is pressed by the pressure difference, so that the reserve tank 1
0, the fountain water in the fountain nozzle 2 existing between the ball check valve 14 provided in the water pipe 12 and the fountain water in the fountain nozzle 2, more specifically, the fountain water W in the reserve tank 10 and the reserve water. Tank 10 and ball check valve 14
Fountain water W in the ventilation pipe 6 and the water pipe 12
Then, the fountain water W in the fountain nozzle 2 is explosively ejected from the fountain nozzle 2, and the ejection height H1 (FIG. 7) is higher than the ejection height H of the rod-shaped fountain due to the discharge pressure of the pump 11 in FIG. Run a fireworks fountain that gives a high feeling of fireworks.

The fireworks fountain of FIG. 7 utilizing air pressure is completed almost instantly immediately after the two-way switching valve 17 is opened.
The completion state is detected by a detection unit (not shown), and a control unit (not shown) outputs a valve close signal to the two-way switching valve 17 based on the detection signal to close the valve. As a result, the fountain water W flows in to a level slightly higher than the bottom of the reserve tank 10 as shown in FIG. 8, and the fountain water W is ejected slightly from the fountain nozzle 2 in parallel with the inflow operation. Thereafter, a rod-shaped fountain having a low ejection height H shown in FIG. 6 is executed. Thereafter, the above operation is repeated.

In the fountain device 1 using the two-way switching valve 17, the filling amount of the fountain water W into the high-pressure air supply system 3 is limited to a level slightly higher than the bottom of the reserve tank 10 as described above. Therefore, if the shape and size of the reserve tank 10 are the same, the amount of water for the fireworks fountain using air pressure is slightly reduced as compared with the first embodiment. As a result, a fireworks fountain slightly smaller than the fireworks fountain of the first embodiment is executed. Of course, it is possible to execute a large fireworks fountain similar to that of the first embodiment by increasing the capacity of the reserve tank 10 to increase the amount of water for the fireworks fountain.

On the other hand, since the compressed air having a pressure balanced with the water pressure of the fountain water W is confined, the switching response to the fireworks fountain when the two-way switching valve 17 is opened can be improved. The duration of the rod-shaped fountain can be arbitrarily adjusted by adjusting the valve closing time of the two-way switching valve 17.

That is, by opening / closing the two-way switching valve 17 at a predetermined timing by an opening / closing signal output from a control means (not shown), a fireworks fountain having a high jetting height H1 using the high-pressure air E and a pressure feed are provided. Fountains having different shapes such as a rod-shaped fountain having a low jetting height H using the discharge pressure of the pump 11 can be repeated, and the jetting height H
Fountain with low water can be continuously performed for a long time.

The fireworks fountain of FIG.
Immediately after the two-way switching valve 17 is opened, it is almost instantaneously completed. Moreover, after the two-way switching valve 17 is closed, the fountain water W can be positively refilled by the pumping pump 11, so that the cycle time of the fireworks fountain and the rod-shaped fountain can be reduced.

In the first and second embodiments, 1
Although the description has been made using the fountain nozzles 2, the fireworks fountain and the rod-shaped fountain may be performed from a plurality of fountain nozzles. Further, in the above-described embodiment, the fountain water W is explosively expelled from the fountain nozzle 2 explosively using high pressure air pressure, and the ejection height is higher than the ejection height H of the rod-shaped fountain due to the discharge pressure of the pressure pump 11 in FIG. Although the height H1 (see FIG. 7) is increased, the height of the fountain water W using the high-pressure air pressure does not need to be so high,
As a relationship between the air pressure supplied to the fountain nozzle 2 by the high-pressure air supply system 3 and the water pressure of the fountain water supplied to the fountain nozzle 2 by the fountain water supply system 4, "air pressure = fountain water" is set. Alternatively, it may be set to “air pressure <fountain water”. Further, the air pressure may be variable.

[0034]

As described above, since the fountain device of the present invention is constituted, the following special effects can be obtained.

That is, in the fountain device according to the first aspect of the present invention, the switching valve is switched to determine the rod-shaped fountain determined by the discharge pressure of the pump and the high-pressure air pressure supplied from the high-pressure air supply source. The fireworks fountain can be repeated. Further, the duration of the rod-shaped fountain can be arbitrarily adjusted by adjusting the valve closing time of the switching valve. Furthermore, since the fireworks fountain is instantaneously completed and the fountain water can be positively filled by pumping after the completion of the fireworks fountain, the repetition cycle time of the fireworks fountain and the rod-shaped fountain can be reduced. In addition, the fireworks fountain and the rod-shaped fountain can be performed without requiring a water storage unit such as a pool or a fountain pond.

In the fountain device according to the second aspect of the present invention, when the three-way switching valve is closed, a path between the three-way switching valve and the valve is opened to the atmosphere through a hole provided in the three-way switching valve. can do. Therefore, a small amount of the fountain water flows out through the holes. This makes it possible to increase the filling amount of the fountain water and to execute the fireworks fountain with a large volume when the three-way switching valve is opened.

Further, in the fountain device according to the third aspect of the present invention, since the compressed air is confined, the responsiveness of switching to the fireworks fountain when the two-way switching valve is opened can be improved.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an embodiment of a fountain device according to the present invention.

FIG. 2 is an enlarged front view showing an example of a rod-shaped fountain by a discharge pressure of a pump.

FIG. 3 is an enlarged front view showing an example of a fireworks fountain by high-pressure air.

FIG. 4 is an enlarged front view showing an initial state of switching to a rod-shaped fountain.

FIG. 5 is a system diagram showing another embodiment of the fountain device according to the present invention.

FIG. 6 is an enlarged front view showing an example of a rod-shaped fountain by a discharge pressure of a pump.

FIG. 7 is an enlarged front view showing an example of a fireworks fountain by high-pressure air.

FIG. 8 is an enlarged front view showing an initial state of switching to a rod-shaped fountain.

FIG. 9 is a system diagram of a conventional example.

FIG. 10 is an explanatory view showing a fireworks fountain in a conventional example.

FIG. 11 is a view showing a state of filling water in a conventional example.

[Explanation of symbols]

 Reference Signs List 1 fountain device 2 fountain nozzle 3 high-pressure air supply system 4 fountain water supply system 5 air compressor (high-pressure air supply source) 9 three-way electromagnetic switching valve (switching valve) 9A small hole (hole) 10 pressure pump (pump) 14 ball reverse Control valve (valve) such as stop valve or solenoid valve 17 Two-way solenoid switching valve (switching valve) E High-pressure air W Fountain water

Claims (3)

[Claims] 1. A fountain nozzle, a high-pressure air supply system having a high-pressure air supply source for supplying high-pressure air to the fountain nozzle, and a fountain water supply system having a pump for supplying fountain water to the fountain nozzle The high-pressure air supply system and the fountain water supply system are joined at the inlet side of the fountain nozzle, and the high-pressure air supply system passes through a flow of high-pressure air toward the fountain nozzle or A switching valve for shutting off and switching a fountain state between a pneumatic fountain by the high-pressure air supply source and a hydraulic fountain by the pump is provided, and the fountain water supply system is provided with a valve for preventing the high-pressure air from flowing. A fountain device. 2. The fountain device according to claim 1, wherein the switching valve is a three-way switching valve provided with a hole for opening a path leading to the fountain nozzle to the atmosphere when the valve is closed. 3. The fountain device according to claim 1, wherein the switching valve is a two-way switching valve.