JP3551562B2 - Fountain equipment - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a fountain device that can change the height of a fountain by adjusting a flow rate to a fountain nozzle by changing an opening degree of a valve.
[0002]
[Prior art]
In the conventional fountain device, as shown in FIG. 9, a discharge port of a pump 1 and an inlet header pipe 2 are connected by a first supply pipe 3, and a connection between the inlet header pipe 2 and a fountain nozzle 4 is formed by a first supply pipe 3. The second supply pipe 5 is connected, a first solenoid valve 6 is provided in the middle of the second supply pipe 5, and a branch pipe 7 branched from the upstream side of the first solenoid valve 6 is connected to an outlet header pipe 8. A second solenoid valve 9 is provided in the middle of the pipe 7, and a return pipe 10 connected to the outlet header pipe 8 is connected to the water receiving tank 11. When water is ejected from the fountain nozzle 4, the first solenoid valve 6 is opened with the second solenoid valve 9 closed and water flow to the outlet header tube 8 is stopped, and the water is sent from the inlet header tube 2. The discharged water is supplied to the ejection nozzle 4 and ejected. On the other hand, when the jetting is stopped, the first solenoid valve 6 is closed to stop the water flow to the fountain nozzle 4, the second solenoid valve 9 is opened, and the water sent from the inlet header pipe 2 is branched. It escapes to the outlet header pipe 8 via 7 and returns to the water receiving tank 11.
[0003]
[Problems to be solved by the invention]
The solenoid valves 6 and 9 only switch between the open state and the closed state, and cannot adjust the flow rate. Further, the discharge pressure of the pump 1 is kept constant. Therefore, the amount of water Q0 sent out from the inlet header tube 2, the amount of water Q1 ejected from the fountain nozzle 4 through the first solenoid valve 6, and the amount of water Q2 returned to the outlet header tube 8 through the second solenoid valve 9. Is the same amount (Q0 = Q1 = Q2).
For this reason, in the conventional fountain device, the height of the water spouting from the fountain nozzle 4 is constant, and the water only changes in two modes, that is, whether the water flows out or stops at this constant height. It is difficult to make various changes in the production of the fountain, for example, it is extremely difficult to change the height of the fountain intricately in synchronization with changes in music and lighting.
In addition, since the flow of water is stopped by the solenoid valve, there is a problem that a water hammer phenomenon easily occurs in the piping system, and a connection portion of the piping becomes fatigued.
Furthermore, if a large number of fountain nozzles are provided and controlled by opening and closing the solenoid valve, the height of the fountain will vary, making adjustment difficult.
In addition, a fountain device has been proposed in which the pump discharge amount can be adjusted by controlling the pump with an inverter, but since the fountain is stopped using an electromagnetic valve, the fountain height changes slowly even when the fountain height is changed. It was not possible to make a change that required good responsiveness, such as tuning to music with a fast tempo. Therefore, this fountain device was not enough or could produce the effect.
[0004]
[Means for Solving the Problems]
The present invention has been proposed in view of the above, and connects a discharge-side flow path of a pump to an inlet of a three-way valve, a first outlet of the three-way valve to a flow path to a fountain nozzle, and a second outlet to return a flow path side. Fountain devices respectively connected to
The three-way valve is
An inlet, a first outlet, and a second outlet are opened on the outer peripheral surface, and an inlet-side opening communicating with the inlet, a first outlet-side opening communicating with the first outlet, and a second outlet communicating with the second outlet are provided inside. A housing that forms a branch space with an outlet opening on the inner peripheral surface,
A partition portion rotatably fitted in the branch space of the housing and partitioning the entrance side opening into a first region and a second region is formed on the outer periphery, and the first region partitioned by the partition portion is and communicating with the first outlet opening, and first communicating hollow portions gradually vertical size toward the outlet portion from the inlet portion adjacent to the compartment portion is formed so as to expand, and the second region second outlet opening a valve body formed on both sides of the partition portion and the second communicating hollow portion which is formed so as to gradually expand vertical dimension to communication, and toward the outlet portion from the inlet portion adjacent the partition portion, the valve body It consists of a an electrical drive source for rotating, by the rotation angle of the valve body to control the increase or decrease of the area of the first region, and wherein the Rukoto changing the fountain height.
[0005]
The electric driving source for rotating the valve body of the three-way valve is electrically rotational angle controllable servomotor Suteppingumotagaa Rukoto are preferred.
[0006]
[Action]
When the water pumped from the pump flows in from the inlet of the three-way valve, the partitioning portion partitions the inlet side opening into the first region and the second region according to the rotation angle of the valve body. Water is divided according to the size of the area of the first region and the second region. Then, the water divided into the first area is sent out from the first outlet through the first communication air space, and is jetted from the fountain nozzle. On the other hand, the water separated into the second region passes through the second communication space and returns from the second outlet to the return flow path.
When the valve body is rotated by a drive source that can electrically control the rotation angle, the position of the partition that partitions the inlet opening changes, so that the areas of the first region and the second region change in an analog manner. Moreover, this change in area is proportional to the rotation angle of the valve body. Therefore, when the rotation angle of the valve body is adjusted, the amount of water diverted to the first region is adjusted. For this reason, the height of the fountain from the fountain nozzle changes according to the rotation angle of the valve body.
[0007]
When the valve body is rotated by a servo motor or a stepping motor as an electric drive source , the rotation angle of the valve body can be electrically controlled, so that the increase and decrease of the area of the first region can be freely controlled. it can. Therefore, the height of the fountain spouted from the fountain nozzle can be controlled electrically freely.
[0008]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a piping diagram showing a flow path in a fountain device according to a first embodiment of the present invention. A pipe 21 on a discharge side of a pump 20 is provided at an inlet of an inlet header pipe 22, and a pipe 23 on a suction side is provided in a water receiving tank 24. The supply pipe 25 connected to the outlet of the inlet header pipe 22 is connected to the inlet 27 of the three-way valve 26, the first outlet 28 of the three-way valve 26 is connected to the fountain nozzle 29, and the second outlet 30 is connected to the pipe 31. And a return pipe 33 connected to the outlet of the outlet header pipe 32 is connected to the water receiving tank 24. In addition, the pump 20 is a constant pressure and constant discharge amount type.
[0009]
As shown in FIGS. 2 to 6, the three-way valve 26 is mainly composed of a substantially T-shaped housing 34 and a valve main body 35 rotatably provided in the housing 34. In addition, sealing for preventing water leakage is applied to predetermined portions as necessary.
[0010]
The housing 34 has an inlet 27 opened on the outer peripheral surface (a position corresponding to the tip of a T-shaped leg) and a position facing the first outlet 28 and the second outlet 30 (a position corresponding to the ends of the arms of the T-shaped). And a cylindrical branch space 36 is formed therein. An inner opening of the branch space 36 has an inlet-side opening 37 communicating with the inlet 27 and a first outlet communicating with the first outlet 28. The side opening 38 and the second outlet side opening 39 communicating with the second outlet 30 are respectively arranged and opened in the circumferential direction, and the valve body 35 is rotatably fitted in the branch space 36 before the lid member 40 is connected. The upper opening of the branch space 36 is closed by covering. A servo motor or a stepping motor is used as an electric drive source 42 for rotating the valve body 35 so as to be electrically controllable on the shaft 41 of the valve body 35 protruding outside from the shaft hole of the lid member 40. Connecting.
[0011]
As shown in FIG. 5, the valve body 35 is configured such that the outer peripheral surface of the cylindrical body is partially left in the axial direction, and that portion is defined as a partition 43, and the outer peripheral surface of the cylindrical body sandwiching the partition 43 is cut off. Thus, a first communication space 44 and a second communication space 45 are formed.
[0012]
When the valve body 35 is fitted into the branch space 36 of the housing 34, the partitioning portion 43 faces the inlet-side opening 37, and partitions the inlet-side opening 37 into a first region 46 and a second region 47. is there.
[0013]
The first communication space 44 is a space communicating between the first region 46 and the first outlet opening 38 in a state where the partition 43 partitions the inlet opening 37, and is adjacent to the partition 43. It is formed so as to be continuous in a fan shape over a range of about 150 degrees from the flowing inflow portion, and the vertical dimension gradually increases from the inflow portion to the outflow portion.
[0014]
The second communication space 45 has the same configuration and the same size as the first communication space 44, although the left and right are different from each other, and the second communication space 45 has the second region 47 and the second region 47 in the state where the partition 43 partitions the entrance-side opening 37. It is a space communicating with the outlet side opening 39, is continuous in a fan shape over a range of about 150 degrees from the inflow portion adjacent to the partition portion 43, and the vertical dimension gradually increases from the inflow portion to the outflow portion It is formed so that.
[0015]
When the rotation angle of the three-way valve 26 having the above-described configuration is rotated by a servomotor or a stepping motor that can be electrically controlled, and the partitioning portion 43 of the valve body 35 is positioned at the center of the inlet-side opening 37, FIG. As shown in FIG. 4, since the entrance-side opening 37 is a symmetrical rectangle, the partition 43 equally divides the entrance-side opening 37 into a first region 46 and a second region 47 having the same area. Therefore, the water that has flowed in from the inlet 27 is divided into the first area 46 and the second area 47 by the partition 43 by the same amount. Therefore, the water amount Q0 supplied to the three-way valve 26 is equally divided into the water amount Q1 flowing out of the first outlet 28 and the water amount Q2 flowing out of the second outlet 30 (Q0 = Q1 + Q2, Q1 = Q2).
[0016]
When the position of the partition 43 is changed by rotating the valve main body 35 counterclockwise from the state of FIG. 4 by a servo motor or a stepping motor , the inlet opening 37 is symmetrical, so that it is shown in FIG. As described above, the area of the second region 47 is reduced by the increase in the area of the first region 46, and the area of the second region 47 is increased by the decrease of the area of the first region 46. In addition, as shown in FIG. 7, the increase and decrease of the area of each region is almost linearly proportional to the rotation angle (opening) of the valve body 35 as compared with the conventional three-way valve.
[0017]
When the valve body 35 is sufficiently rotated counterclockwise by a servo motor or a stepping motor until the partitioning portion 43 overlaps the left and right opening side edges of the inlet side opening 37, for example, as shown in FIG. When the valve body 35 is rotated until the portion 43 overlaps one opening side edge of the inlet-side opening 37, the area of the second region 47 becomes zero, and the area of the first region 46 becomes maximum. Therefore, in this state, all the water flowing from the inlet 27 flows out of the first outlet 28 and does not flow out of the second outlet 30 (Q0 = Q1, Q2 = 0).
[0018]
Therefore, all of the amount of water sent out from the inlet 27 header pipe 22 is ejected from the fountain nozzle 29, and the height of the fountain is maximized.
[0019]
From this maximum fountain state , when the valve body 35 is rotated clockwise by the servo motor or the stepping motor to move the partition 43, the area of the first region 46 is reduced as shown in FIG. , The area of the second region 47 increases by the reduced area of the first region 46. Therefore, the amount of water flowing out of the first outlet 28 decreases in proportion to the rotation angle of the valve body 35, and the amount of water flowing out of the second outlet 30 increases in proportion to the rotation angle of the valve body 35. For this reason, the amount of water spouted from the fountain nozzle 29 decreases in proportion to the rotation angle of the valve body 35, and the height of the fountain also decreases substantially in proportion to the rotation angle of the valve body 35. Then, when the valve body 35 is rotated by the servo motor or the stepping motor until the partitioning portion 43 is positioned at the center of the inlet side opening 37 (FIG. 4), as described above, half of the water flowing from the inlet 27 becomes the first. Since the water flows out from the outlet 28 and the other half flows out from the second outlet 30, the amount of water jetted from the fountain nozzle 29 is reduced to half of the maximum fountain state, and the height of the fountain is also almost halved.
The water that has flowed out of the second outlet 30 once flows into the outlet header pipe 32 through the pipe 31, and then returns to the water receiving tank 24 through the return pipe 33.
[0020]
Then, when the valve body 35 is further rotated clockwise by a servomotor or a stepping motor until the partition 43 overlaps the other opening side edge of the inlet side opening 37 (FIG. 6C), the first region 46 The area becomes zero, and the area of the second region 47 becomes maximum. Therefore, in this state, all the water flowing from the inlet 27 flows out of the second outlet 30 and does not flow out of the first outlet 28 (Q0 = Q2, Q1 = 0).
For this reason, the fountain from the fountain nozzle 29 is stopped, and the entire amount of water sent out from the inlet 27 header pipe 22 is returned to the water receiving tank 24 via the outlet header pipe 32. That is, the height of the fountain becomes zero.
[0021]
As described above, the fountain device described above raises the height of the fountain from the highest level to zero by rotating the valve body 35 of the three-way valve 26 with the servo motor or the stepping motor whose rotation angle can be electrically controlled . The height of the fountain can be changed almost in proportion to the rotation angle of the valve body 35. Therefore, when a servo motor, a stepping motor, or the like is used as the electric drive source 42 that rotates the valve body 35, the height of the fountain can be freely controlled. When the valve body 35 is rotated by a servo motor or a stepping motor, the amount of water flowing out of the first outlet 28 changes by the amount of the rotation of the valve body 35. The time required until the height changes is short, and the responsiveness (response) is good. Further, even when the fountain is stopped by setting the amount of water flowing out of the first outlet 28 to zero, the amount of water flowing out of the second outlet 30 is increased in accordance with the decrease in the amount of water flowing out of the first outlet 28. It is not necessary to stop the flow of water rapidly, so that the water hammer phenomenon hardly occurs.
It is to be noted that a speed reducer 48 may be appropriately interposed between the output shaft of the servomotor or the stepping motor and the shaft 41 of the valve body 35 as necessary, so that the rotation angle of the valve body 35 is controlled with high accuracy. Desirable from above.
[0022]
The second embodiment of the fountain device shown in FIG. 8 is provided with a plurality of fountain nozzles 29a, 29b, 29c, 29d, and 29e, and the pipe 21 on the discharge side of the pump 20 is provided at the inlet of the inlet header pipe 22. The suction side pipe 23 is connected to the water receiving tank 24, and one end of each of a plurality of supply pipes 25a, 25b, 25c, 25d, 25e is connected to the inlet header pipe 22, and each supply pipe 25a, 25b, 25c, 25d, The other end of 25e is connected to the inlets of three-way valves 26a, 26b, 26c, 26d, 26e. In this embodiment, the fountain nozzle 29 is attached to the first outlet 28 of the three-way valve 26, and the three-way valve 26 and the fountain nozzle 29 are integrated. Further, the other ends of the pipes 31a, 31b, 31c, 31d, 31e each having one end connected to the second outlet of each three-way valve 26 are connected to the outlet header pipe 32, and the return pipe 33 connected to the outlet of the outlet header pipe 32 is connected. It is connected to the water receiving tank 24. An electric control device comprising a servo motor or a stepping motor 42a, 42b, 42c, 42d, 42e as an electric drive source attached to each three-way valve 26, which can electrically control the rotation angle, is constituted by a computer or the like. 49 are electrically connected to each other via wires 50a, 50b, 50c, 50d, and 50e.
[0023]
The electric control device 49 is constituted by a computer or the like, and sends a signal to each servo motor or stepping motor 42a, 42b, 42c, 42d, 42e based on a program stored in advance to send a signal to each three-way valve 26a, 26b, The turning angles (openings) of the valve bodies 35 of 26c, 26d, and 26e are individually controlled, thereby controlling the water distribution ratio between the first outlet and the second outlet of each three-way valve 26.
[0024]
Therefore, the height of the fountain from each of the fountain nozzles 29a, 29b, 29c, 29d, and 29e can be freely controlled by the electric control device 49 for each servo motor or stepping motor 42a. it can. For example, as shown in FIG. 8, the first and fifth three-way valves 26a and 26e at the left end and the right end are fully opened to control the fountain height to the maximum, and the adjacent second and fourth three-way valves 26b and 26d are opened. The degree is set slightly smaller than the first and fifth three-way valves 26a and 26e, the fountain height is controlled to about 80%, and the rotation of the central third three-way valve 26c is set further smaller to reduce the fountain height. By controlling to about 60%, it is possible to control so that the height of the fountain becomes an arc as a whole. When the degree of opening of each of the three-way valves 26a, 26b, 26c, 26d, and 26e is programmed to change with the passage of time, the height of the fountain spouting from each of the fountain nozzles 29a, 29b, 29c, 29d, and 29e is measured. And can be varied in various ways. Therefore, the fountain height can be changed in synchronization with music or in accordance with a change in illumination. For this reason, various and various water shows are possible depending on the program.
[0025]
In this embodiment, the inlet header pipe 22 and the outlet header pipe 32 are provided with pressure detectors 51a and 51b having pressure gauges, and the pressure of both header pipes 22 and 32 is monitored by the pressure control device 52. When the fluctuation is large, the electric valve 53 provided in the middle of the return pipe 33 is operated to adjust the pressure. Therefore, the height of the fountain spouting from each of the fountain nozzles 29a, 29b, 29c, 29d, 29e can be controlled to a preset height.
[0026]
【The invention's effect】
As described above, according to the present invention, the water flow to the fountain nozzle is controlled by a three-way valve , and the three-way valve is rotated by a servo motor or a stepping motor whose rotation angle can be electrically controlled , and the valve body is The amount of water to the fountain nozzle can be adjusted in an analog manner by continuously changing the area of the section of the opening on the inlet side, and the fountain nozzle is proportional to the rotation angle of the valve body. The amount of water to the can be adjusted.
Therefore, the height of the fountain spouting from the fountain nozzle can be freely adjusted by adjusting the rotational position of the valve body of the three-way valve with the servo motor or the stepping motor .
In addition, since the amount of water to the fountain nozzle is changed according to the rotation position of the valve body by the servo motor or the stepping motor, the time required from the rotation of the valve body to the change of the height of the fountain actually ejected is longer than before. Can be shortened, and responsiveness (response) can be improved. Therefore, it is possible to change the height of the fountain in a short time.
Further, even when the valve body is rotated by a servo motor or a stepping motor to change the amount of water to the fountain nozzle, or when the water flow to the fountain nozzle is stopped, the rotation of the valve body causes the partitioning unit to rotate. Since the cross-sectional area of the water flow to the fountain nozzle is reduced or loosened by changing the water distribution ratio, the water hammer phenomenon hardly occurs. Therefore, it is possible to reduce the impact caused by the change of the water flow, to reduce the fatigue of the connecting portion of the pipe, and to suppress the generation of unpleasant noise.
[0027]
Since the valve body of the three-way valve is rotated by a servomotor or a stepping motor capable of controlling the rotation angle to electrically control the angle of the valve body , the fountain jetted from the fountain nozzle Can be electrically adjusted freely.
Therefore, it is easy to adjust the height of the fountain in synchronization with music and lighting, and it is possible to easily realize various and various effects with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a basic piping diagram of a fountain device according to the present invention.
FIG. 2 is a perspective view of a three-way valve.
FIG. 3 is a sectional view of the three-way valve taken along a line III-III.
FIG. 4 is a horizontal perspective view of a three-way valve.
FIG. 5 is a perspective view of a valve body.
FIG. 6 (a) is a horizontal sectional view of a three-way valve in a state where a flow rate from a first outlet is set to be larger than a flow rate from a second outlet, and FIG. FIG. 4C is a horizontal cross-sectional view of the three-way valve in a state in which the amount of water flowing out of the outlet is reduced to zero from the second outlet. It is a horizontal sectional view of the three-way valve in the state where the outflow amount was set to zero.
FIG. 7 is a graph showing a relationship between the opening degree of a three-way valve and the discharge amount of a fountain nozzle.
FIG. 8 is a piping diagram of a second embodiment of the present invention provided with a plurality of fountain nozzles.
FIG. 9 is a piping diagram of a conventional fountain device.
[Explanation of symbols]
Reference Signs List 20 pump 21 pipe between discharge port of pump and inlet header pipe 22 inlet header pipe 23 pipe between suction port of pump and water receiving tank 24 water receiving tank 25 supply pipe 26 three-way valve 27 three-way valve inlet 28 three-way valve First outlet 29 Fountain nozzle 30 Second outlet 31 of three-way valve 31 Piping between second outlet and outlet header pipe 32 Outlet header pipe 33 Return pipe 34 Three-way valve housing 35 Three-way valve valve body 36 Branch empty space 37 Inlet opening 38 of the branch space First outlet opening 39 of the branch space Second outlet opening 40 of the branch space Lid 41 Shaft 42 of the valve body Electrical drive source (servo motor, stepping motor)
43 Partitioning part 44 of valve body 44 First communicating empty part 45 Second communicating empty part 46 First area 47 of inlet-side opening partitioned by partitioning part Second area of inlet-side opening partitioned by partitioning part 49 Electrical including computer Control device 51 Pressure detector 52 Pressure control device 53 Solenoid valve

Claims (2)

A fountain device in which a discharge-side flow path of a pump is connected to an inlet of a three-way valve, a first outlet of the three-way valve is connected to a flow path to a fountain nozzle, and a second outlet is connected to a return flow path side,
The three-way valve is
An inlet, a first outlet, and a second outlet are opened on the outer peripheral surface, and an inlet-side opening communicating with the inlet, a first outlet-side opening communicating with the first outlet, and a second outlet communicating with the second outlet are provided inside. A housing that forms a branch space with an outlet opening on the inner peripheral surface,
A partition portion rotatably fitted in the branch space of the housing and partitioning the entrance side opening into a first region and a second region is formed on the outer periphery, and the first region partitioned by the partition portion is A first communication opening formed in communication with the first outlet opening and having a vertical dimension gradually increasing from an inflow portion to an outflow portion adjacent to the partition portion; and a second outlet opening formed in the second region. And a valve body formed on both sides of the partition with a second communication cavity formed so that the vertical dimension gradually increases from an inflow portion adjacent to the partition toward an outflow portion, and
A fountain device comprising an electric drive source for rotating the valve main body, wherein the fountain height is changed by controlling an increase or decrease in the area of the first region by a rotation angle of the valve main body. 2. The fountain device according to claim 1, wherein the electric drive source is a servo motor or a stepping motor.

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