JP2995738B2 - Water spouting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a water discharge device that maintains a constant flow rate of discharge water.

(B) Conventional technology Conventionally, as a water spouting device having a discharge port communicating with a water passage, for example, there is a spout or an eye wash nozzle mounted on a wash basin, and these water spouting devices reduce the water pressure of the water passage. Utilization is configured so that water discharged at a constant flow rate or water pressure from the discharge port flows downward or upward at a constant elevation angle.

(C) Problems to be Solved by the Invention However, since the water pressure in the water passage changes according to the surrounding water use condition or due to an accident in the water supply device, etc. Increase or decrease in the amount of water discharged from the outlet, changes in the flow of discharged water, etc., causing unexpected discharge water forms downstream from the discharge port, such as spillage of discharged water from the wash basin or ejection of abnormally high pressure eye wash water Occurs,
It is inconvenient to use, and there is a troublesome operation of adjusting the flow rate by operating the flow control valve before use. In particular, the inconvenience is greater in the case of a water discharge device in which the elevation angle of the discharge port is higher than horizontal.

(D) Means for Solving the Problems The present invention is a water discharge device having an inflow port and a discharge port, and capable of maintaining a constant flow rate of discharge water from the discharge port,
A discharge pressure holding means for maintaining a constant pressure immediately upstream of the discharge port, and an opening of the discharge port opening corresponding to an increase or decrease of a flow rate from the inflow port in conjunction with the discharge pressure holding means. Discharge amount variable means for proportionally increasing and decreasing the area,
The present invention relates to a water discharge device characterized in that, when the flow rate increases, the opening area of the discharge port opening is expanded, and when the flow rate decreases, the opening area is reduced.

Further, the discharge pressure holding means detects a pressure immediately upstream of the discharge port, and a driving means for driving the discharge amount changing means so as to maintain the pressure detected by the pressure detection means at a predetermined pressure. It is also characterized by having the following.

Further, the present invention relates to a water discharge device comprising an elevation angle changing means for changing an elevation angle of the discharge port based on a flow rate of water discharged from the discharge port.

Further, the present invention is characterized in that the elevation angle changing means controls the elevation angle of the discharge port so that the water discharged from the discharge port reaches a preset position.

Further, the present invention is characterized in that the elevation angle changing means detects a pressure immediately upstream of the discharge port, and controls the elevation angle of the discharge port based on the detected pressure.

Further, the present invention is characterized in that the elevation angle of the discharge port is upward from the horizontal direction.

(E) Function / Effect In the present invention, the discharge pressure holding means for holding the pressure immediately upstream of the discharge port constant, and the increase / decrease of the flow rate from the inflow port in cooperation with the discharge pressure holding means. Discharge amount changing means for proportionally increasing or decreasing the opening area of the discharge port opening, so that when a large amount of water flows into the water discharge device from the inflow port, the discharge pressure holding means In addition, the discharge varying means functions to expand the opening area of the discharge port, and the amount of water discharged increases in accordance with the amount of water flowing in, but the flow velocity does not increase.

On the other hand, when a small amount of water flows into the water spouting device from the inflow port, the discharge pressure holding means and the discharge amount variable means function to narrow the opening area of the discharge port, and the water discharge amount decreases according to the amount of water flowing in. But the flow rate does not slow down.

As described above, since the discharge amount according to the inflow amount and the flow rate of the discharge water can be kept constant, for example, when this is applied to a spout of a wash basin, even if the water is discharged upward from the horizontal direction, the wash surface Water can be landed at a fixed position on the bowl of the table, and there is no danger of spattering water outside the bowl.

In addition, since it has a simple structure, it can be easily applied to all general household equipment for water discharge.

In addition, the discharge pressure holding unit includes a pressure detection unit that detects a pressure immediately upstream of the discharge port, and a driving unit that drives the discharge amount variable unit so as to maintain the detection pressure of the pressure detection unit at a predetermined pressure. And the hysteresis of the mechanical operation can be corrected.
This has the effect of improving the control accuracy of the fluid pressure.

Further, in the present invention, based on the flow rate of the discharge water from the discharge port, the apparatus is provided with elevation angle changing means for changing the elevation angle of the discharge port. Therefore, even if the pressure on the inlet side changes, the discharge water Since the parabolic trajectory can be set to an arbitrary trajectory by automatically changing the elevation angle of the discharge port, there is an effect that inadvertent flying is prevented and the landing position is maintained at a predetermined position.

Further, since the elevation angle changing means controls the elevation angle of the discharge port so that the water discharged from the discharge port reaches a preset position, even if there is a change in the flow velocity on the inlet side. It is possible to always obtain the water landing effect at a fixed position.

Further, the elevation angle changing means detects the pressure immediately upstream of the discharge port, and if the elevation angle of the discharge port is controlled based on the detected pressure, the pressure change due to any cause on the water supply side is always performed. In response, the parabolic trajectory of the elevation angle discharge water can be changed, so that an arbitrary parabolic trajectory can be set.

Furthermore, in the present invention, the elevation angle of the discharge port can be set to be higher than the horizontal direction, and in this case as well, the discharge water can be prevented from spilling from the water receiving container, so that it can be used for drinking water or for face washing. It can be suitably used as a water discharging device. In addition, the problem derived from the discharge water parabolic shape peculiar to the elevation angle when taking an elevation angle above the horizontal, that is, the problem of large landing point displacement derived from the slight difference in the discharge water parabola shape, from the discharge port Eliminates as much as possible by automatically keeping the flow velocity and flow pressure of the discharged water as low as possible, always landing the discharge water at the desired position to prevent inadvertent scattering of water and high-pressure water ejection Has an effect that can be.

Further, when the water discharge device according to the present invention is set in the sink, there is no obstacle such as a faucet in the space above the sink which is originally a working space, so that workability and safety can be improved.

(F) Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings.
The figure is an explanatory view of a fixed position water jet nozzle (A1) as a water discharge device of the first embodiment, and a secondary side of a water stop and flow control valve (2) connected to a water supply pipe (1) as a water passage. Is in communication with

Reference numeral (3) denotes a nozzle body, in which a substantially cylindrical cylinder (4) is formed, and a substantially circular discharge port (5) is opened at the upper end of the cylinder (4). A valve seat (6 ') is formed on the inner periphery of the cylinder (4), and an inflow port (6) protruding from the upper side wall of the cylinder (4) communicates with the water stop / flow control valve (2). .

A piston (7) is vertically slidably inserted into the cylinder (4), and a plunger (7a) having a smaller diameter than the piston (7) protrudes from an upper surface of the piston (7). The vertical movement of the piston (7) changes the distance between the valve seat (6 ') and the upper end surface of the plunger (7a), that is, the area of the opening (a) so that the discharge flow rate is kept constant. I have to. That is, the configuration is such that the area of the discharge port (5) can be changed.

A substantially conical guide cone (8) with a halfway curved inwardly protrudes from the upper end surface of the piston (7), and the piston (7) and the guide cone (8) constitute a discharge amount varying means. The valve seat (6 ') surrounds the outer periphery of the base end of the guide cone (8).

Therefore, water discharged from the annular opening (a) toward the center flows along the guide cone (8) and converges on the outer extension of the center line of the discharge port (5).

A spring (10) is provided between the lower surface of the piston (7) and the plug (9) screwed to the lower end of the cylinder (4).
To urge the piston (7) upward. The initial biasing force of the spring (10) can be adjusted by screwing the plug (9). Thus, the piston (7)
The spring (10) and the spring (10) constitute a discharge pressure holding means for maintaining a constant pressure immediately upstream of the discharge port.

(13) is an auxiliary jet opened at the upper end surface of the guide cone (8), and communicates with the inside of the cylinder (4).

This embodiment is configured as described above. When the water stop / flow control valve (2) is opened and water is fed into the fixed position water landing nozzle (A2), the pressure of the water causes the piston (7) to move. Is pushed downward to open the opening (a), and discharges water inside the cylinder (4) from the discharge port (5) to the outside.

At this time, the pressure of the water inside the cylinder (4), that is, the pressure immediately upstream of the discharge port (5) is changed by the spring (10).
And the amount of movement of the piston (7) is
Since it is proportional to the water pressure and inversely proportional to the spring constant of the spring (10), if the spring constant is made as small as possible, the pressure in the cylinder (4) will be almost constant, and the flow rate of the discharge water will be almost constant. become.

That is, when a large amount of water is supplied to the fixed position landing nozzle (A2) by opening the water stop / flow control valve (2) widely, the pressure inside the cylinder (4) increases, and the piston (7)
Is largely moved downward to increase the area of the opening (a),
The flow velocity does not increase even if the discharge water is large.

When the water stop / flow control valve (2) is slightly opened and a small amount of water is fed into the fixed position landing nozzle (A2), the piston (7) moves only slightly downward, and the opening ( Since a) is only slightly opened, the flow velocity does not decrease even if the amount of discharged water is small.

Further, even when the water supply pressure of the water supply pipe (1) fluctuates, the piston (7) operates as described above, so that the flow velocity of the discharge water can be kept constant.

As described above, the flow rate of the discharge water can be kept constant irrespective of the discharge water amount and the supply pressure from the discharge port (5).

When the auxiliary jet (13) is not provided, a cavity is formed in the discharge water just discharged from the opening (a), the streamline of the discharge water is disturbed, the landing position becomes unstable, and the flight distance is shortened. In addition, the opening of the water stop / flow control valve (2) is small and the amount of discharged water is too small, so that the opening (a) is only slightly opened. May not reach the constant flow rate.

However, in the present embodiment, since the auxiliary jet (13) is provided, the above-mentioned cavities are not generated, and the streamlines of the discharge water are prevented from being disturbed. Therefore, the landing position of the discharge water is constant, and the flight distance of the discharge water can be extended. The effective diameter of the auxiliary jet (13) and the spring (10)
If the initial urging force is adjusted appropriately, water can be discharged from the auxiliary jet (13) at a substantially constant flow rate, and the range of discharge amount at which the discharge water can be discharged at a constant flow rate is small. Can be expanded to the quantity side.

This embodiment is configured as described above, and can be suitably used for a spout of a wash basin.

That is, as shown in FIG. 2, when the above-mentioned fixed position water landing nozzle (A1) is applied to the spout (20) of the wash basin (B) as the discharge port (5), the discharge water is independent of the discharge amount. Because the flow velocity of the bowl is constant, the bowl (21)
At a certain position. Spout (20)
Is open obliquely upward toward the center of the bowl (21) as shown in the figure, and the fixed position watering nozzle (A1) of the present invention is disposed at the discharge port of the spout (20). I have.

(22) is the handle of the stopcock (23).
When 2) is rotated left and right, the water stopcock (23) opens according to the rotation angle, and water is discharged from the spout (20).

Since the pressure of the water discharged from the spout (20) is constant as described above, and the flow velocity of the discharged water is also constant, the discharged water draws a constant parabola and falls to a certain place represented by the following equation. Will be.

L = (v ² sin2θ) / g L: Distance from spout to landing point v: Discharge speed θ: Elevation angle of discharge port g: Acceleration of gravity Δh: Discharge head at opening Q: Flow rate A: Discharge port Opening area Therefore, when the water stopcock (23) is opened to a certain degree or more, the discharge head Δh is kept almost constant, the flight distance L of the discharge water is kept constant, and the water reaches the fixed position of the bowl (21). Will be.

FIG. 3 shows a fixed position watering nozzle (A) as a second embodiment.
2) is shown. This is substantially the same as the first embodiment. However, in the first embodiment, the piston (7) is urged by the spring (10), and the piston (7) is pressed by the pressure in the cylinder (4). The second embodiment constitutes a discharge pressure holding means for holding the pressure immediately upstream of the discharge port (5) constant by moving the piston. In the second embodiment, the movement of the piston (7) is controlled by the cylinder. This embodiment is different from the above embodiment in that the discharge pressure holding means is configured to be performed by an electric piston moving means (15) controlled by a pressure sensor (14) as a pressure detecting means provided in (4). different.

The piston moving means (15) provided for performing the displacement of the flow velocity variable means is provided with a screw (17) on the piston (7).
The screw (17) is interlocked with a motor (16) as driving means disposed outside the nozzle body (3) via a screw connection with a speed reducer (18). The piston (7) is moved by the forward / reverse rotation of (16).

(C) is a controller, which is provided with a water stop and flow control dial (19), and is provided with a water stop and flow control valve (2 ') electrically driven and a fixed position water landing nozzle (A2). , Fourth
The control is performed based on the flowchart shown in FIG.

This flowchart controls the spout (20) so that the elevation angle is kept constant, the pressure of the water discharged from the spout (20) is kept constant, and the falling position of the water is kept constant.

First, when the flow rate adjusting / water stop dial (19) is operated (50), the operation amount is read into the controller (C) (51). If the operation amount is zero (52), the steps of (51) are performed. Return to and monitor the manipulated variable.

If the operation amount is not zero (53), the water stop and flow control valve (2 ') is opened according to the operation amount (54), and the water stop and flow control valve (2') is opened according to the opening degree of the water stop and flow control valve (2 '). The water with the flow velocity that has flowed into the fixed position landing nozzle (A2).

Next, the water pressure (p ') in the cylinder (4) is detected by the pressure sensor (14) (55), and the pressure (p) set in advance so that the drop position of the discharge water becomes constant is set as a target and the motor is operated. A loop is formed in which feedback control of (16) is performed, and the process returns to step (56) (51).

That is, the detected pressure is compared with the set pressure, and a drive signal based on the comparison result is output.

As described above, since the control is performed by the controller, the hysteresis generated by the mechanical operation can be corrected, and the accuracy of the water discharge is improved.

In the above configuration, a hot wire current meter (14 ') or the like is provided in the opening (a) in place of the pressure sensor (14), and the discharge port (5) is provided.
It is also possible to directly detect the flow rate of the water discharged from the apparatus and perform feedback control with the set flow rate as a target.

FIG. 5 shows a third embodiment, in which a spout (S) is provided with elevation angle varying means for varying the elevation angle of the discharge port based on the flow rate of water discharged from the discharge port. The spout (S) is connected to a motor (33) via a reduction gear (34) in conjunction with a motor (33). The elevation angle of (S) can be adjusted.

With such a configuration, the discharge water parabolic trajectory can be set arbitrarily, and the landing position can be set at a fixed position. In FIG. 5, (35) is a rectifier.

FIG. 6 is a flowchart for controlling the motor (33), in which the spout (S) is adjusted to an elevation angle so that the discharge water falls to a predetermined position.

That is, when the water stoppage / flow control valve (2) is operated (60), the operation amount is read into the controller (C) (61), and if the operation amount is zero (62), the steps of (61) Return to and monitor the manipulated variable.

If the manipulated variable is not zero (63), the water stop and flow regulating valve (2) is opened according to the manipulated variable (64), and the flow according to the opening of the water stop and flow regulating valve (2) is performed. The water is allowed to flow into the spout (S).

Next, the water pressure (p ') in the spout (S) is detected by the pressure sensor (14) (65), the flow rate of the discharge water from the discharge port (5) is calculated from the water pressure, and the discharge rate is calculated from the flow rate. The target elevation angle (θ ′) of the spout (S) for dropping water to a certain position is calculated (66), and the motor (33) is feedback-controlled using this numerical value as a target (67) and (61). To form a loop.

That is, the controller compares the set value read by the controller (C) in advance with the detection value detected by the pressure sensor (14), and outputs a drive signal based on the comparison result to the motor (33) as drive means. Thus, the elevation angle of the spout (S) as the discharge port is changed.

As described above, in the present invention, it is possible to prevent the water discharged from the spout from dropping to a certain place in the bowl and spilling to the outside of the bowl. The spout can be put to practical use, and the washstand equipped with such a spout has no practical obstacles above the bowl, so that there is a practical effect that the convenience of face washing, hair washing, hand washing, etc. is improved.

Although not shown, when applied to a sink, the workability and safety are improved because there are no obstacles in the space above the sink, which is originally a working space, and also applied to an eyewash nozzle,
Eyewash water having a flow rate most suitable for eyewashing can be discharged or used for an upwardly opened nozzle for drinking water, so that the discharged water can be prevented from spilling from a water receiving vessel.

Furthermore, since the controller controls the driving means, the hysteresis of the mechanical operation can be corrected, and the accuracy of water discharge can be improved. Therefore, the discharge flow rate is kept constant based on the water supply function. It has an effect that can be applied to necessary general household equipment.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a main part of a first embodiment of the present invention, FIG. 2 is a side view of a washstand equipped with a spout to which the first embodiment is applied, and FIG. 3 is a main part of a second embodiment. FIG. 4 is a flow chart for controlling the fixed position water spray nozzle of the second embodiment, FIG. 5 is a cross-sectional view of a main part of the third embodiment, and FIG.
The figure is a flowchart for controlling the fixed position water landing nozzle of the third embodiment. (A): Fixed position water spray nozzle (B): Wash basin (S): Spout (1): Water supply pipe (3): Nozzle body (4): Cylinder (5): Discharge port (6 '): Valve seat (7): Piston (10) Spring

Claims (6)

(57) [Claims] 1. A water discharge device having an inflow port and a discharge port and capable of maintaining a constant flow rate of discharge water from a discharge port, wherein the pressure immediately upstream of the discharge port is maintained constant. Discharge pressure holding means, and a discharge amount changing means that, in conjunction with the discharge pressure holding means, proportionally increases or decreases the opening area of the discharge port opening in response to an increase or decrease in the flow rate from the inflow port. A spouting device characterized in that, when the flow rate increases, the opening area of the discharge port opening is increased, and when the flow rate decreases, the discharge area is reduced. 2. The discharge pressure holding means includes: a pressure detection means for detecting a pressure immediately upstream of the discharge port; and a discharge amount variable means for driving the discharge amount variable means so as to keep the pressure detected by the pressure detection means at a predetermined pressure. The water discharging device according to claim 1, further comprising a driving unit that performs the driving. 3. An apparatus for discharging water, comprising means for changing the elevation angle of the discharge port based on the flow rate of water discharged from the discharge port. 4. The water discharging apparatus according to claim 3, wherein said elevation angle varying means controls the elevation angle of said discharge angle so that the water discharged from said discharge port lands on a preset position. 5. The water discharging apparatus according to claim 4, wherein said elevation angle changing means detects a pressure immediately upstream of said discharge port, and controls an elevation angle of said discharge port based on the detected pressure. 6. The water discharging apparatus according to claim 1, wherein an elevation angle of the discharge port is upward from a horizontal direction.