JPH0419480A - Fixed quantity stop cock device - Google Patents

Abstract

PURPOSE:To provide easiness to use further with high reliability without necessity for many mechanical turning parts by providing a driving circuit for exciting an electromagnet in the direction of opening a valve when a desired amount of water is set and closing the valve when a preset value agrees with an integrated value. CONSTITUTION:When a desired amount of water is determined by a water amount setting mechanism 15 and set by pressing a set switch 30, an electromagnet 6 is energized in a direction of opening a valve 3 to move a plunger 8 to a left end position and a ball valve 3a, and a water discharge is started by opening a valve 3. Under this condition, even when the set switch 30 is turned off by detaching a hand from it, the water discharge is continued by self-holding the position of the plunger 8 by magnetic force of a magnet 9. An electric pulse signal from a rotational sensor is integrated by an integrating circuit 14 by rotating a turbine 4 of a flow detecting means 13 at a speed in proportion to a flow amount during the water discharge. When water is allowed to flow by the preset flow amount, the electromagnet 6 is actuated by exciting a coil 7 to move the plunger 8 to a right end position, and the water discharge is stopped by bringing the ball 3a into contact with a seat surface of a valve seat 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a metered water stop valve device that automatically stops water supply when a preset amount of water flows.

[Prior Art] A water stop device disclosed in Japanese Patent Application Laid-Open No. 63-43082 is well known, which automatically stops the water supply when a desired water level is reached when tap water is supplied to a bathtub. This water stop device includes a valve casing that can be attached to a water faucet in a liquid-tight manner at its upstream end, a valve seat provided in the channel of the hull blond, and a movable valve seat provided upstream of the valve seat. A spherical valve body that engages with the valve seat to stop water, a hull blonde extending downstream beyond the valve seat, a string with one end attached to the hull blonde, and the other end of the string. (When the float is not receiving a predetermined buoyancy force), the weight of the float releases the engagement between the valve body and the valve seat via the hull plot, causing water to flow out. It is equipped with a guide that guides the string midway so that it flows out. When the water level rises to the level of the float suspended by a string and the float receives buoyancy, the valve body engages with the valve seat, automatically stopping the water supply.

Further, an automatic water shutoff device equipped with a water shutoff valve that shuts off water when a predetermined amount of water is discharged is well known from Japanese Utility Model Application Publication No. 57-171469. This automatic water stopper consists of an impeller that is rotationally driven by fluid flowing inside the container, a gear train that decelerates the rotation of this impeller, a cam that is rotated by the output shaft of this gear train, and a cam that is rotated by the output shaft of this gear train. It consists of a ball valve mechanism that opens and closes as a driven control rod advances and retreats. When the preset amount of water is reached, the control rod moves back and the ball valve engages the valve seat, automatically shutting off the water. I was supposed to.

[Problem to be solved by the invention]

Among the above-mentioned conventional techniques, the former has the disadvantage that the float suspended by a string gets in the way, making it difficult to use and inconvenient.

In addition, the latter has many mechanical rotating parts, such as impellers, gear trains that combine many gears in multiple stages, and cams that are linked to setting dials, so dirt and foreign objects in the water flow may adhere to these rotating parts. This poses a problem in that smooth operation is obstructed, or in the worst case, it becomes inoperable and does not perform the function that should be automatically shut off when placed in place.

Therefore, in order to solve the above-mentioned problems, the present invention aims to provide an easy-to-use and highly reliable fixed-rate water stop valve that does not require a float suspended from a string or many mechanically rotating parts. purpose.

(Means for Solving the Problem) In order to achieve the above object, the metered water stop valve device of the present invention includes a self-holding electromagnet (6) that operates in both directions to open and close the valve (3), and a self-holding electromagnet (6) that detects the flow rate. flow rate detection means (13, 13') that converts the signal into an electrical signal, an integration circuit (14) that integrates the signal, and a water amount setting that sets the desired water amount! ff1l
(15), when the electromagnet (6) is excited in the direction of opening the valve (3) when setting with this water volume setting mechanism (15), and the set value set coincides with the integrated value of the integrating circuit. and a drive circuit (40) that excites the electromagnet (6) in the direction of closing the valve (3).

; Effect] When the desired water volume is set using the water volume setting mechanism (15), the drive circuit (40) excites the electromagnet (6) in the direction of opening the valve (3), and the electromagnet opens the valve. The electromagnet (6) is self-held with the valve (3) open. When the valve (3) opens and water supply starts, the flow rate detection means (13) generates an electric signal corresponding to the flow rate, that is, the flow rate per unit time.

This electrical signal is integrated by the integration circuit (14), and when it reaches the set value set by the water volume setting mechanism (15), the drive circuit (
40) excites the electromagnet (6) in the direction of closing the valve (3), and the electromagnet (6) closes the valve (3), thereby stopping the water supply.

〔Example〕

Typical embodiments are shown in FIGS. 1 to 5. In Fig. 1, 1 is a faucet casing, 2 is a water channel provided inside the faucet casing 1, and 3 is a valve provided in the middle of the water channel 2 with a ball 3a.
This is a ball valve consisting of a valve seat 3b and a valve seat 3b.

Reference numeral 4 denotes a turbine provided downstream of the valve 3 in the water channel 2, which rotates at a speed corresponding to the flow rate, that is, the flow rate per unit time.
Reference numeral 5 denotes a water outlet, and fluid is discharged (water supplied) from the water outlet 5 through a valve 3 in the water channel 2 and a turbine 4. 6 is a self-holding electromagnet that operates in both directions, and is composed of a coil 7, a plunger 8, and a magnet 9 fixed to the plunger 8, and the eight plungers move to the right or left depending on the direction in which the coil 7 is energized. It self-holds its position even if the excitation current is cut off.

Details of the electromagnet 6 are shown in FIGS. 2(a) to 2(d). The coil 7 consists of two coils 7a and 7b connected in series, and both coils 7a and 7b are wound in opposite directions. The second plunger 8 is held in the left position.
In the state shown in Figure (a), when an excitation current is applied in a fixed direction as shown in Figure (b), the fixed magnetic poles 6a and 6b in Figure (a) become S poles and drive the magnet 9 to the right. and move the −° plunger 8 to the right. The plunger 8 that has moved to the right will cause the magnet 9 to move even if the coil 7 is de-energized.
is attracted to the fixed magnetic pole 6b and is self-held. In this state, when an excitation current is applied in the opposite direction to the double coil 7 as shown in FIG. 2(d), the fixed magnetic images 6a and 6b become N poles as shown in FIG. 2(C), driving the magnet 9. to move the plunger 8 to the left. After moving to the left, even if the coil 7 is de-energized, the magnet 9 remains attracted to the fixed magnetic pole 6a and is self-retained.

When the electromagnet 6 is excited and the plunger 8 moves to the left, the left end of the plunger 8 pushes the ball 3a and moves it to the position shown in FIG. 1, so the valve 3 opens and water is released (water supply).

The electromagnet 6 has such a magnetic force that even when the plunger 8 is self-held in either the left or right position by the magnetic force of the magnet 9, it can be moved to the other position by manually operating the right end 8a of the plunger 8. It is stipulated in

10 is a sealing material consisting of an O-ring for maintaining watertightness between the faucet casing 1 and the plunger 8, and 11 is a power switch attached to the electromagnet 6, which works in conjunction with the plunger 8 so that the plunger 8 is in the position shown in the figure. ○N, the plunger 8 is configured to turn OFF when moved to the right end. 1
2 is a rotation sensor that converts the rotation of the turbine 4 into an electric signal, and the turbine 4 and the rotation sensor 12 form a flow rate detection means 13.
It consists of Reference numeral 14 denotes an integration circuit that integrates the electrical signals from the rotation sensor 12 of the flow rate detection means 13; 15, a water amount setting mechanism that sets a desired water amount; and 15, a water amount setting mechanism that is connected to the integration circuit 14 through a plurality of electric wires 16. Reference numeral 40 denotes a drive circuit, which is integrated with the integration circuit 14. A battery 17 supplies voltage to the rotation sensor 12, integration circuit 14, drive circuit 40, etc. via the power switch 11. The battery 17 is installed in the faucet casing 1 in a replaceable and waterproof manner. Note that the electric wires for connecting the hatch 'J17 to other circuits are omitted and not shown in FIG. 18 is a bathtub.

In the electric circuit shown in Figure 3, 7 is an electromagnetic coil, 11
is a power switch, 12 is a rotation sensor, 14 is an integration circuit,
15 is a water amount setting mechanism, and 7 is a battery, which are described in the explanation of FIG. 1, respectively. The rotation sensor 12 includes a slotted, two-tooth disc 19 (
(see Fig. 4), a light emitting diode 20 and a phototransistor 21 which are arranged facing each other with one slit disk in between.
and resistors R+ and Rz, and optically detects the rotation of the turbine 4 and converts it into an electric pulse signal. The slit disk 19 is fixed to the upper end of the rotating shaft of the turbine 4, and as shown in FIG. The light beam from the light emitting diode 20 is received eight times by the phototransistor 21 and converted into eight pulses of electrical signals. In this way, the slit disk 191, the light emitting diode 20, and the phototransistor 21 constitute a so-called photoinclutter. The integrating circuit 14 receives electrical pulse signals from the rotation sensor 12 of the flow rate detecting means 13 and counts and integrates them.
When the integrated value reaches a set value set by the water amount setting mechanism 15, an exciting current is applied to the coil 7 of the electromagnet 6 in a direction to stop the valve 3. The integration circuit 14 includes a frequency divider 22. AND circuit 2
3. Binary coded decimal down counters 24a, 24b,
24c, resistance R: l + R4 capacitor C,,OR
The gate 25 is connected as shown in the figure.

Binary coded decimal down counters 24a, 24b,
Reference numerals 24c constitute down counters for the first, second, and third decimal digits, respectively, which are precenter pull-down counters and are configured to be preset by the water amount setting mechanism 15.

In the end, the down counters 24a, 24b and 24c are 10.
It constitutes a 3-digit decimal down counter. Also, the output pulse of the frequency divider 22 is approximately 1 pulse per water amount 11;
This is determined. Down counters 24a and 24
Key 7 layout terminals CO of key 24.b are connected to down counters 24b and 24.b, respectively. ] are cascade-connected to the carry-in terminals of the town counters 24a, 24b, and 24c.
Each of the terminals CO is connected to the input of the OR gate 25. The series circuit of the resistor R4 and the capacitor C1 is a down counter 2! when the power supply is 0\. a, 24b, 24c constitute the power-on-recent circuit 28, which connects the resistor R4 and capacitor C.
1 connection count down counter 24a, 24b, 24
Each reset terminal of c is connected. The water amount setting mechanism 15 has rotary switches 29a, 29b and 29b for setting the desired water 1, and down counters 24a and 24b for the number selected by each of these four digits.
, 24c, and a reset switch 31 that resets the previously set value.

Each rotary inch 29a, 29b, 29c is a down counter 24a, 24b, 24c, respectively.
The set switch 30 is connected to the B, C, and D terminals, the set switch 30 is connected to the SET terminal of the down counter, and the reset switch 31 is connected to the RESET terminal of the down counter as shown. By the way, the A, B, C, and D terminals are input with BCD (binary coded decimal) numbers, and the count values of the 3-digit decimal down counters 24a, 24b, and 24c are "0".
Then, the output of the OR gate 25 becomes low level, the AND gate 23 closes, and the pulse signal from the frequency divider 22 is no longer input to the down counter, and the drive circuit 4
0, the output of inverter 26 is high level, and inverter 4
The output of transistors 27 and 4 is low level.
3 becomes conductive and the coil 7 of the electromagnet 6 is turned in the direction to stop the valve 3.
The excitation current is made to flow through.

The drive circuit 40 includes inverters 26, 41, 42, transistors 27, 43, 44, 45, diodes attached, D2, and resistors Rs, Rh, R7, Ra, Rq, R+.

+ RIl+ R1□ are connected as shown in the figure. 7 is a coil of the electromagnet 6. Transistors 27 and 43 are connected to one signal line through an inverter 42, transistors 44 and 45 are also connected to one signal line through an inverter 41, and transistors 27 and 43, or transistors 44 and 45: The circuit configuration B turns ON and OFF at the same time. The illustrated connection in which the coil 7 is connected between the collectors of the transistors 27 and 44 has a bipolar connection configuration, and the direction of the current flowing through the coil 7 of the solenoid valve 6 can be changed.

When the transistors 27 and 43 are turned ON, a leftward current flows through the coil 7 shown in FIG. 3 (see FIG. 2), which causes the electromagnet 6 to close the valve 3. transistor 4
When 4 and 45 are turned ON, a rightward current flows through the coil 7 (see FIG. 2d), and the solenoid valve 6 or valve 3 is opened.

This is to absorb the surge voltage generated in the auto D+, Dz or the coil 7.

Note that when the plunger 8 of the electromagnet 6 is manually pushed to the left in FIG. Self-maintained. Conversely, if the plunger 8 is manually pulled to the right from this open/closed state, the valve 3 returns to its original state.
is closed and the position is self-held by the magnetic force of the magnet 9. In this way, it can also be moved manually between two positions.

FIG. 5 is a front view of the water amount setting mechanism 15, and shows the rotary switches 29a, 29b, 29c and the set switch 3.
0 and reset switches 31 are arranged for easy operation.

In addition, in FIG. 3, a switch 30a connected in parallel with the power switch 11 is a switch that operates in conjunction with the cent switch 30, and by pressing the set switch 30 in the water volume setting mechanism 15, the switch 30a Chi 30
a is also ONL, and before the power switch 11 is turned on, the voltage of the hunter 17 is supplied to the rotation sensor 12, integration circuit 14, drive circuit 40, etc. The signal line of the cent switch 30 is also connected to the heath circuit of an inverter 41 and a transistor 44, and when the set switch 30 is pressed, the transistors 44 and 45 are turned on and the electromagnet 6 is excited in the direction of opening the valve 3. .

,! The signal lines of SEF, TOSUI, and CH 31 are also connected to the heath circuit of an inverter 42 and a transistor 27, and when this reset switch 31 is pressed, transistors 27 and 43 are turned ON, and an electromagnetic magnet is moved in the direction of closing the valve 3. 6 is excited.

Next, the operation of the above embodiment will be explained. Incidentally, FIG. 6 is a timing chart of the operation.

When the plunger 8 is at the right end position Q, it contacts the ball 3a or the conical seat surface of the valve seat 1-3b to close the valve 3 and stop water discharge (water supply).

Decide on the desired amount of water with the water V submergence setting 15 and press the cenote switch 7/chi 30 to set it, and the electromagnet 6 will open the valve 3 in the direction 2.
When the current is applied, the plunge island 8 moves to the left end position 5, the hole 3a moves to the position shown in FIG. 1, and the valve 3 opens to start water discharging (water supply). In this state, Seph Toss Inch 30
Even if the plunger is turned off by releasing the plunger, the plunger 1-8 retains its position by the magnetic force of the magnet 9 and water continues to be discharged.

During water discharge, the turbine 4 of the flow rate detection means 13 rotates at a speed proportional to the flow rate, and the electric pulse signals from the rotation sensor are integrated by the integration circuit 14. When the plunger 8 moves to the left end position, the power switch 11 is switched in conjunction with the plunger 8.
, so voltage is supplied to each electrical circuit.

To set the desired amount of water, rotate the rotary wheels 29a, 29b, and 29c of the water amount setting mechanism 15 to match the desired water amount value, and press the set switch 30.
(binary coded decimal) code for each down counter 24a,
24b and 24c, and each time 11 water flows from the set value, it decreases by one count (.And when the set flow rate flows, the down counters 24a, 24b
The value of all three digits of 24c becomes "0", and OR gate 2
The output of transistor 5 becomes low level and transistors 27 and 43
conducts, the coil 7 is excited, the electromagnet 6 is activated,
The plunger 8 moves to the right end position, the ball 3a contacts the seat surface of the valve seat 3b, and water discharge stops. At the same time, the power switch 11 is turned off and the voltage supply to each electric circuit is also cut off.

In the above embodiment, the turbine 4 and the rotation sensor 12 are used as the flow rate detection means, and the rotation sensor is an optical photointerrupter shown in FIG. 2, but other types of flow rate detection means may also be used. . For example, the flow rate sensor 13' may be constructed by incorporating two permanent magnets into the blades of a turbine 4' rotating in the water channel 2, and providing a magneto-electric conversion element 12' on the upper surface of the wall 2a of the water channel 2. At this time, the wall 2a of the water channel 2 is formed of a non-magnetic material.

Further, in the embodiment shown in FIG. 1, since the ball 3a is pushed from the side, the angle of the valve seat 3b may change, which may make it difficult for the ball 3a to move.
Therefore, if the ball 3a is pushed up from below as shown in FIG. 7, the ball will move more easily and the valve 3 will open and close more reliably.

Since the present invention uses an electromagnet 6 that operates in both directions, there is no adverse effect on operation even if the electromagnet 6 is arranged as in the seventh article and the opening/closing operation section is installed at the bottom of the faucet casing 1.

Further, the structure of the valve 3 is not limited to the ball valve shown in FIG. 1, but may be structured as shown in FIGS. 8 and 9.

Note that the present invention is not limited to water, and can also be used to measure other fluids such as hot water.

(Effect of the invention) Since the quantitative water stop line device of the present invention is configured as described above,
The flow rate detection means, integration circuit, drive circuit, water volume setting mechanism, and electromagnetic magnet are easily built into the faucet casing, and there are no obstructive additions on the exterior of the faucet, resulting in a clean appearance.

Furthermore, since a multi-stage reduction gear train is not used, there is no failure due to adhesion of dust, etc., and reliability is improved. Furthermore, since the flow rate detection means is not subjected to rotational torque that would cause a mechanical load on gear trains, cams, etc., the amount of fluid used can be measured with high precision. Furthermore, the valve opening operation is automatically performed by the operation of setting the flow rate, making the operation easy.

[Brief explanation of drawings]

Figure 1 is a longitudinal cross-sectional view of an embodiment of the present invention, Figure 2 is a detailed view of the electromagnet of the embodiment shown in Figure 1, and Figures (a) and (C) are enlarged longitudinal sections with the plunger in different positions. The top view, circuit parts fb) and (d) are electric circuit diagrams showing the current flowing through the yaw 1' and the direction of the magnetic pole in the states of (a) and (C), respectively, and Figure 3 is the electrical circuit diagram of Figure 1. The electrical circuit diagram of the example, Figure 4 is S'J
7 Plan view of the upper disk, Figure 5 is a top view of the water volume setting mechanism,
FIG. 6 is a timing chart, FIG. 7 is a longitudinal sectional view of an embodiment of the pond of the present invention, and FIGS. 8 and 9 are partial longitudinal sectional views showing different examples of the structure of the valve. 3...Valve, 6...Electromagnet, 13...Flow rate detection means, 14...Integrator circuit, 15...Flow rate setting mechanism, 40
...Drive circuit

Claims (1)

[Claims] 1. A self-holding electromagnet (6) that operates in both directions to open and close the valve (3), a flow rate detection means (13, 13') that detects the flow rate and converts it into an electric signal, and an integration circuit that integrates the signal. (14) and a water amount setting mechanism (1) that sets the desired water amount.
5) When the water volume setting mechanism (15) is used to set the water volume, the electromagnet (6) is excited in the direction of opening the valve (3), and when the set value and the cumulative value of the cumulative circuit match. A metered water stop valve device comprising a drive circuit (40) that excites the electromagnet (6) in a direction to close the valve (3).