JP2002195442A - Latch type electricity-driven valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latch type solenoid valve which can be actuate to be opened without a special power source, of which the valve-opened state can be held after it is opened, and of which the valve-closed state can be held after it is closed. SOLUTION: This solenoid valve is electrically driven to be closed by the supply of power, and its valve-opened state or valve-closed state is held without the supply of power. On this solenoid valve 10, a manual operation part 52 is provided, and by a manual operation force added to the manual operation part 52, a plunger valve element 33 is forcedly and non-electrically moved from a valve-closing position to a valve-opening position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch-type electric drive valve which moves a valve body to a valve closing position by supplying drive power, and keeps the valve open and closed even when power is not supplied.

[0002]

2. Description of the Related Art
The human body is sensed by the sensor, and based on the sensing, the electric drive valve provided on the water channel is automatically opened to supply water, and after a certain amount of water flows, the electric drive valve is closed. A water supply device that stops the water supply, or a water supply device that automatically closes the electric drive valve to stop the water supply when the detection of the sensor is deviated due to the movement of a person. .

However, in the case of this type of conventional water supply apparatus, a power supply for opening and closing the electric drive valve is required. When a dry battery or the like is used as the power supply, the battery runs out. The water supply device becomes inoperable, for example.

On the other hand, when a commercial power supply is used as a power supply, electric wiring work for connection to the power supply is required, and the work for installing the water supply apparatus is large, and the cost of the water supply apparatus is reduced. It will be expensive. In this case, for example, it is conceivable that a hydraulic power generator is provided on a water channel, electric power is generated by a water flow, and the electric power is supplied to an electric drive valve to close the valve. However, even in such a case, electric power for opening the electric drive valve is still required, and as long as a normal electric drive valve is used, in the conventional water supply device, from the start of water supply to the stop of water supply with no power supply. It is difficult to do.

[0005]

The latch-type electrically driven valve of the present invention has been devised to solve such a problem. According to a first aspect of the present invention, there is provided a latch-type electric drive valve for opening and closing a water passage, which is electrically driven to be closed by supply of drive power and maintains the open and closed states without power supply. There is provided a manual operation unit, wherein the valve body is forcibly and non-electrically movable to a valve opening position by a manual operation force applied to the manual operation unit.

According to a second aspect of the present invention, in the first aspect, the electric drive valve is an electromagnetic valve.

A third aspect of the present invention is characterized in that, in any one of the first and second aspects, the electric drive valve is a pilot valve that opens and closes a pilot water passage for opening and closing a main valve that opens and closes a main water passage. .

According to a fourth aspect of the present invention, in any one of the first to third aspects, a magnet is fixed to the manual operation portion, and the magnet is attached to the valve body with movement of the manual operation portion. The valve body is moved from the valve closing position to the valve opening position by magnetic force when approached.

A fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, a latch magnet is provided for holding the valve body in a valve opening position by a magnetic force.

[0010]

As described above, the latch-type electric drive valve of the present invention has a manual operation portion, and the valve body is forcibly and non-electrically opened by the manual operation force applied thereto. In this latch-type electrically driven valve, water supply can be started without any trouble without a special power supply.

Therefore, when this latch-type electric drive valve is applied to a water supply device, it can be started without any trouble without power supply. In this case, if a generator that generates power by water flow is provided and the electric drive valve is closed using the generated power, the water supply can be performed without a special power supply such as a commercial power supply. A series of operations from the start to the stop of the device can be completed.

In the present invention, the manual operation section is a concept including not only an operation section by a hand but also an operation section by a foot and an operation section by a human body. Further, in the present invention, the electric drive valve can be closed by manual operation. In this way, even after a system such as a water supply device is started, even if a situation in which the valve cannot be electrically closed due to a power failure or the like occurs, the water supply can be stopped by a manual operation without any trouble.

Here, a solenoid valve can be suitably used as the electric drive valve (claim 2).

Further, the electric drive valve may be configured as a pilot valve for opening and closing a pilot water passage for opening and closing the main valve for opening and closing the main water passage. By doing so, it is possible to open and close the main water channel through which a large flow of water can be satisfactorily circulated with a small amount of electric power.

In the present invention, a magnet is fixed to the manual operation portion of the electric drive valve, and when the magnet approaches the valve body as the manual operation portion moves, the valve body is closed by a magnetic force. From the valve opening position to the valve opening position (claim 4). In this case, a good seal between the manual operation unit and the valve body can be easily secured.

In order to keep the valve body in the open state, the electrically driven valve may be provided with a latch magnet for holding the valve body in the valve open position by magnetic force.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 specifically shows a configuration of a latch type solenoid valve (electrically driven valve) 10 of the present embodiment. In this example, the solenoid valve 10 is a pilot valve that performs a pilot operation on a main valve having the main valve body 27 as a main component.
This is a latch-type valve that maintains the open state after opening the valve and the closed state after closing the valve without power supply. The main valve body 27 is a diaphragm type valve body, and when the main valve body 27 is seated on the valve seat 28, the water passage 12 is shut off. That is, the upstream water passage 12a and the downstream water passage 12b are in a non-communication state.

A back pressure chamber 30 is formed on the back side (upper side in the figure) of the main valve body 27. Normally, the main valve body 27 is seated on the valve seat 28 by the pressure inside the back pressure chamber 30. In state. The back pressure chamber 30 and the downstream water passage 12b communicate with each other through a center hole 32 formed in the center of the main valve body 27, and the center hole 32 is closed by a plunger valve body 33. It has become.

When the plunger valve body 33 moves upward in the drawing, water in the back pressure chamber 30 is removed from the main valve body 27 by the downstream water passage 1.
By flowing out to 2b, that is, when the pressure inside the back pressure chamber 30 decreases, the valve is opened by the supply pressure of the upstream water passage 12a. On the other hand, when the plunger valve body 33 moves downward in FIG. 1 and the center hole 32 is closed, the water in the upstream water passage 12a flows into the back pressure chamber 30 through the small hole formed in the main valve body 27, As a result, the pressure inside the back pressure chamber 30 increases, and the main valve body 27 is finally closed by the pressure.

Reference numeral 34 denotes a solenoid coil of the solenoid valve 10, and the plunger valve body 33 is pushed downward in the drawing by the electromagnetic repulsive force of the solenoid coil 34. The plunger valve element 33 is urged downward in the drawing, that is, in the valve closing direction, by a spring 38. When the plunger valve element 33 moves to the valve opening position, the magnetic force of a latch magnet 40 provided inside the casing 36 causes The valve is kept open against the urging force.
After the plunger valve body 33 has moved to the valve closing position, the plunger valve body 33 is kept in the valve closed state by the urging force of the spring 38.

The solenoid valve 10 of this embodiment has a manual operating portion (operating rod) 42, a magnet 44 is provided at the tip thereof, and these are directed upward by a spring 46 in the figure, that is, a plunger valve body. It is urged in a direction away from 33. Here, the manual operation unit 42 is in a state of protruding upward from the casing 36.

The solenoid valve 10 of this embodiment can be mechanically opened by manual operation. That is, when the manual operation portion 42 is pushed downward by the hand, foot, or the like against the urging force of the spring 46 from the state shown in FIG.
As shown in FIG. 5, the plunger valve body 33 is pulled upward by magnetic attraction force against the urging force of the spring 38 by the magnet 44. Then, the center hole 32 of the main valve body 27 communicates with the back pressure chamber 30, the pressure in the back pressure chamber 30 decreases, and the main valve body 27 opens.

Further, as shown in FIG. 1 (III), the plunger valve body 33 pulled up in the figure is held at the valve opening position by the magnetic force of the latch magnet 40. That is, when the manual operation unit 42 is pushed downward in the drawing, even if the manual operation unit 42 returns to the original position by the urging force of the spring 46, the plunger valve body 33 is held at the valve open position and the water passage 12 is Held in state.

On the other hand, when power is supplied to the solenoid coil 34 in the state shown in FIG.
3 is pushed downward in the figure by the electromagnetic repulsive force, whereby the center hole 32 of the main valve body 27 is closed. Thereafter, the water in the upstream water passage 12a flows into the back pressure chamber 30 through the small hole formed in the main valve body 27, whereby the pressure in the back pressure chamber 30 gradually increases, and finally the main valve The body 27 is seated on the valve seat 28. Here, the water channel 12 is shut off, and the flow of water stops.

FIG. 2 shows another example of a latch type solenoid valve. As shown in the figure, the latch-type solenoid valve 10 of this example differs from the above-described embodiment in that the manually operated
Is movable in a direction perpendicular to the direction of movement of the plunger valve body 33 (vertical direction in the figure), and a magnet 44 is held at the end thereof.

In this example, the plunger valve element 33 is magnetically attracted to the magnet 44 via the core 54 made of a magnetic material, and water is supplied to the distal end of the downstream water passage 12b in the water passage 12. A mouth 50 is provided. The other points are basically the same as those of the first embodiment, so that only the reference numerals are shown and the detailed description is omitted.

In the solenoid valve 10 of this embodiment, FIG.
As shown in I), when the manual operation unit 52 is pushed rightward in the figure to bring the magnet 44 close to the core 54, the magnetic force of the magnet 44 acts on the plunger valve body 33, and the plunger valve body 33 is moved. Lifted upward in the figure. As a result, the center hole 32 of the main valve body 27 is opened, and the main valve body 27 is subsequently operated to open as shown in FIG. Here, the water channel 12 is in an open state, and water in the upstream water channel 12a is
, And water is subsequently supplied downward from the water supply port 50 at the tip thereof.

Even if the manual operation unit 52 pushed to the position shown in FIG. 2 (II) is then pulled leftward as shown in FIG. 2 (III), the plunger valve body 33 will remain in the same position as in the first embodiment. The valve is held at the valve open position by the magnetic force of the latch magnet 40, and the water passage 12 is maintained in a water-flowing state. That is, the water supply from the water supply port 50 is continuously performed.
The closing of the solenoid valve 10 is performed in the same manner as in the first embodiment.

Next, FIG. 3 shows an example in which the water supply device is constructed by incorporating the electromagnetic valve 10 of FIG. In FIG. 3, reference numeral 58 denotes a main body of the water supply device 56 having the water passage 12 therein, and a manual operation unit 52 is provided at an upper portion in the figure so as to be able to move in the left-right direction in the figure. Here, the manual operation unit 5
2 is urged by a spring 46 in the left direction in the figure, that is, in the retreating direction.

The manual operation section 52 is provided with a push operation force input section 60 at the left end in the figure.
When a pushing operation force is applied rightward in the figure with respect to 0, the manual operation unit 52 moves forward in the right direction in the figure, and lifts the plunger valve body 33 of the solenoid valve 10 to open the solenoid valve 10. . Thereafter, when the pushing operation force applied is removed, the manual operation unit 52 returns to the original position by the urging force of the spring 46.

In the water supply device 56 of the present embodiment, a generator 18 provided with a water wheel 20 that rotates by the water flow in the water channel 12 is incorporated therein, and power is generated by the water flow in the water channel 12. In the water supply device 56 of this example, electric power generated by the generator 18 is supplied to the electromagnetic valve 10 under the control of the controller 24, and the electromagnetic valve 10 performs a valve closing operation by the supplied electric power.

In the case of the water supply device 56 of this example, the input unit 60
When the pushing operation force is applied rightward in the figure, the manual operation unit 52 moves forward in the figure rightward against the urging force of the spring 46, and the magnet 44 held at the distal end is moved to the electromagnetic valve 1.
0 at the core 54. Then, the plunger valve body 33 is lifted upward in the drawing by the magnetic force of the magnet 44, and the solenoid valve 10 is opened. Then, as a result, the main valve body 27 opens and the water passage 12 is opened as shown in FIG. 4, and water is supplied from the water supply port 50.

At this time, the water flow in the water channel 12 causes
0 rotates and the generator 18 generates electric power. Then, under the control of the controller 24, the solenoid valve 10 is operated to close by the electric power supplied thereafter.

The water supply device 56 shown in FIGS.
After the integrated flow rate of the water flowing through is measured, and when the flow rate reaches a predetermined constant flow rate, the solenoid valve 10 is closed to start the water supply from the fixed water stop device, that is, the water supply port 50. It can be configured as a fixed-quantity water stopping device that automatically stops water supply when the water supply amount becomes a constant water supply amount.

As means for measuring the integrated flow rate, a water turbine 20
A pulse is generated by the rotation of and the integrated flow rate is measured by counting the number of pulses, or a timer function is provided in the controller 24, and the integrated flow rate is measured by measuring the time from the start of water supply. It is possible. Alternatively, the electric power generated by the generator 18 may be charged (stored) in a capacitor, and the amount of water until the charged voltage becomes a constant voltage may be measured as an integrated flow rate.

FIG. 5 conceptually shows an example in which a condenser is used as the measuring means and the water supply device 56 is configured as a fixed water stop device. In FIG. 5, the electric power generated by the generator 18 is charged (stored) in the capacitor 22, and
When the charging voltage of the capacitor 22 reaches the set value as shown in FIG.
The valve driving unit 26 is driven by a signal from the
Is supplied with power.

Here, the solenoid valve 10 is closed, and the flow of water through the water channel 12 is stopped. That is, the water supply from the water supply port 50 stops. The power supply to the solenoid valve 10 may be performed by directly supplying the power generated by the generator 18 to the solenoid valve 10 or by discharging the power stored in the capacitor 22 and supplying the power to the solenoid valve 10. You may do it.

The charging voltage of the condenser 22 increases in proportion to the total rotation amount of the water turbine 20 in the generator 18, that is, the integrated flow rate of the water flowing through the water channel 12. When the charging voltage reaches the set value, the solenoid valve 10 is closed by the valve drive unit 26 as shown in FIG.

As described above, the latch type solenoid valve 10 of the present embodiment
In this case, the plunger valve body 33 can be moved to the valve opening position by manual operation, so that water supply can be started without any trouble without a special power supply.

Further, since the solenoid valve 10 is configured as a pilot valve, the water passage 12 through which a large amount of water flows can be opened and closed satisfactorily with a small amount of electric power.

In this embodiment, the magnet 44 is fixed to the manual operation units 42 and 52, and the plunger valve body 33 is moved from the closed position to the open position by the magnetic force of the magnet 44. Therefore, the manual operation unit 4
Good sealability can be easily secured between the second and second 52 and the water channel inside the solenoid valve 10.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, in the above example, the electric power generated by the generator is stored in a capacitor, and this is supplied to an electrically driven valve such as a solenoid valve to perform a valve closing operation. It is also possible to close the valve.

Further, various solenoid valves other than those described above can be used as the solenoid valve. FIG. 7 shows an example thereof. Here, when the manual operation part 42 is pushed in, the rod-shaped action part 64 integral therewith lifts the plunger valve body 33 made of a magnetic material upward, and the electromagnetic valve 1
0 operates to open the valve.

Further, the present invention can be applied to not only the solenoid valve but also other electric drive valves, and can be configured in variously modified forms without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a view showing a latch type solenoid valve according to an embodiment of the present invention.

FIG. 2 is a view showing a solenoid valve according to another embodiment of the present invention.

FIG. 3 is a diagram showing an example in which a water supply device is configured using the electromagnetic valve of FIG. 2;

FIG. 4 is a view showing an operation state of the water supply device of FIG. 3;

FIG. 5 is a diagram showing an example in which the water supply device of FIGS. 3 and 4 is configured as a fixed water stop device.

FIG. 6 is a diagram illustrating the principle of the quantitative water stoppage device of FIG. 5;

FIG. 7 is a view showing a solenoid valve according to still another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 solenoid valve (electrically driven valve) 12 water channel 27 main valve element 33 plunger valve element 40 latch magnet 42, 52 manual operation section 44 magnet

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) F16K 31/42 F16K 31/42 B (72) Inventor Yasuhiro Shirai 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Inc. (72) Inventor Tomoyuki Mizuno 5-1-1 Koie Honcho, Tokoname-shi, Aichi F-term in Inax Inc. (Reference) 2D060 CA07 3H056 AA03 BB32 BB50 CA08 CB02 CC12 CD06 DD04 DD09 GG05 3H106 DA07 DA13 DA27 DA35 DB02 DB12 DB23 DB32 DC02 DD03 EE22 EE25 EE48 FB29 GA15 GA23 GC16 GC29 KK07

Claims (5)

[Claims] A latch-type electrically driven valve for opening and closing a water passage, which is electrically driven to be closed by supply of drive power and maintains a valve open and closed state without power supply, wherein the valve is manually operated. A latch-type electrically-driven valve having a portion, wherein the valve body can be forcibly and non-electrically moved to a valve-open position by a manual operation force applied to the manual operation portion. 2. The latch-type electric drive valve according to claim 1, wherein the electric drive valve is an electromagnetic valve. 3. A latch-type electric drive according to claim 1, wherein said electric drive valve is a pilot valve for opening and closing a pilot water passage for opening and closing a main valve for opening and closing a main water passage. valve. 4. The valve body according to claim 1, wherein a magnet is fixed to the manual operation portion, and the magnet approaches the valve body as the manual operation portion moves. Characterized in that the valve is moved from the valve closing position to the valve opening position by magnetic force. 5. A latch-type electrically driven valve according to claim 1, further comprising a latch magnet for holding the valve body in a valve-open position by a magnetic force.