JP2003027545A - Fixed volume water supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixed volume water supply device having a simple and compact structure, easy in setting operation of an integrated flow rate of supply water, and grasping a supply water residual quantity from a start of water supply at a glance. SOLUTION: This fixed volume water supply device 10 stops water supply when the integrated flow rate of the supply water reaches a preset flow rate, and comprises a generator 24 for generating electric power by a water flow of a waterway 20, and detecting the integral flow rate of water flowing in the waterway 20, a solenoid valve 22 for opening and closing the waterway 20, a controller 48 for closing the solenoid valve 22 when the integral flow rate reaches the preset flow rate, a setting operation part 50 for performing setting operation on the integral flow rate up to stopping from a start of the water supply, and a display part 100 for displaying the preset flow rate, and every second changing a display of a present supply water residual quantity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant quantity water supply apparatus for stopping water supply when a total flow rate of water supply, that is, an integrated flow rate, reaches a set flow rate. And a generator that generates electricity with a water stream that supplies electric power for closing the valve.

[0002]

2. Description of the Related Art Conventionally, in various types of water supply apparatuses, there has been used a constant quantity water supply apparatus which automatically stops water supply when a predetermined amount of water is supplied. For example, in a faucet or the like of a bathroom in a bathroom, water supply (water discharge) is started by operating a push button, and water supply is automatically stopped when water for one bath tub has been supplied. Alternatively, when water is supplied to a bathtub, water supply is automatically stopped when a certain amount of water is accumulated in the bathtub, that is, when a certain amount of water is supplied to the bathtub. Furthermore, in a flush valve (toilet bowl cleaning device) that supplies flushing water to the toilet bowl to flush the toilet bowl, when a button operation is started, a certain amount of water is supplied and then automatically stopped. Has become.

However, this type of quantitative water supply device which has been conventionally used mechanically measures the water supply flow rate, and
When the water supply flow rate reaches a certain amount, the valve is mechanically closed.Therefore, there is a problem that the water supply flow rate, which should be constant, varies and is insufficient in terms of accuracy. There is a problem that the structure is complicated and bulky, and because the structure is complicated, it is easily broken and the cost is high.

In this case, the opening / closing valve of the water channel for controlling the water supply is an electrically driven valve, and the integrated flow rate of the water channel is electrically detected by the flow rate detecting means, and after the electrically driven valve is opened. When the integrated flow rate reaches the set flow rate, it may be electrically closed to stop the water supply. By doing so, it becomes possible to configure the fixed quantity water supply device with a simple structure and in a compact manner.

However, in this case, a power source for opening and closing the electrically driven valve is required. When a commercial power source is used as the power source, electrical wiring work for connecting the power source and the constant quantity water supply device is required, and the work for installing the constant quantity water supply device becomes large. As a result, the installation cost of the fixed amount water supply device becomes high. Furthermore, when a commercial power source is used as the power source, the fixed quantity water supply device becomes inoperable during a power failure.

On the other hand, when a battery such as a dry battery is used as a power source, a large amount of electric power is consumed when the electrically driven valve is driven, which causes a problem that the battery is easily dead. Therefore, in addition to having to perform maintenance work such as battery replacement on a regular basis, there is a problem in that this type of constant-quantity water supply device becomes inoperable if the battery runs out.

[0007]

The quantitative water supply device of the present invention has been devised to solve such a problem. Thus, the first aspect of the present invention is a quantitative water supply device which stops the water supply when the integrated flow rate of the water supply reaches the set flow rate, and (a) has a water wheel arranged on the water channel, (B) an electric drive valve for opening and closing the water channel, (c) flow rate detecting means for detecting an integrated flow rate of water flowing through the water channel, and (d) the integrated flow rate is the set flow rate. The controller that closes the electrically driven valve by the electric power generated by the generator when the temperature reaches the temperature, (e) a setting operation section for setting and operating the set flow rate, and (f) a display that displays the set flow rate. And a section.

According to a second aspect of the present invention, in the first aspect, the electrically driven 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 set flow rate of the integrated flow rate is variable.

A fourth aspect of the present invention is characterized in that, in any of the first to third aspects, the generator also serves as a flow rate detecting means for detecting the integrated flow rate.

According to a fifth aspect of the present invention, the electrically driven valve according to any one of the first to fourth aspects is a valve that can be opened by a human operation without relying on a power source in which electric power is stored in advance. A valve operating portion for opening the electrically driven valve is provided.

According to a sixth aspect of the present invention, in the fifth aspect, the electrically driven valve has a plunger valve body made of a magnetic material, and the valve operating portion magnetically causes the plunger valve body to open in a valve opening direction. It is characterized by having a magnet to be moved.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the electrically driven valve is maintained in an open state after being opened and a closed state after being closed without power supply. It is a latch-type valve that operates.

According to an eighth aspect of the present invention, in the seventh aspect, the latch-type electrically driven valve has a latch magnet for holding the valve body in a valve opening position by magnetic force.

According to a ninth aspect of the present invention, in any one of the first to eighth aspects, the display section is an optical display section that electrically displays light.

According to a tenth aspect of the present invention, in any one of the first to ninth aspects, the display section displays the remaining amount of water supply, and the remaining amount of water supply is reduced and displayed as the amount of water supplied increases. It is characterized by being made.

According to an eleventh aspect of the present invention, in any one of the first to ninth aspects, the display unit displays the remaining time of the water supply time, and the remaining time is reduced and displayed as the water supply time elapses. It is characterized by being made.

A twelfth aspect of the present invention is characterized in that, in any one of the first to eleventh aspects, a stop operation portion for stopping the water supply during the water supply is provided.

[0019]

As described above, the quantitative water supply device of the present invention comprises the electrically driven valve for opening and closing the water channel and the generator for generating electricity by the water flow of the water channel. In the water supply device, since the electric drive valve can be driven by using the electric power generated by the generator, the electric drive valve can be closed without power supply when the water supply is stopped.

Therefore, even when a power source such as a dry battery that stores electric power in advance is provided, the power source of the dry battery or the like can be used only as an auxiliary power source, for example, to keep the controller in an operating state at all times. Even when a power source such as a dry battery is used, the power consumption can be suppressed as much as possible, the battery life can be extended, and the maintenance work for battery replacement can be reduced. . Further, since the constant quantity water supply device of the present invention electrically performs the constant quantity water supply operation, the device can be configured with a simple structure and compact, and can be highly reliable with few failures.

The quantitative water supply device of the present invention is characterized by including a setting operation section for setting and operating the total flow rate of the water supply, that is, the integrated flow rate, and a display section for displaying the set flow rate. There is. Therefore, according to the constant quantity water supply apparatus of the present invention, a desired total amount of water supply once, that is, the integrated flow rate can be set easily and accurately, and the current set flow rate can be immediately recognized by the user at a glance by the display unit. be able to. Here, in the present invention, the electrically driven valve may be an electromagnetic valve (claim 2).

Further, in the present invention, the set flow rate of the integrated flow rate can be made variable in the setting operation section. By doing so, this can be done freely when it is desired to change the set flow rate (claim 3). In this case, a new setting or setting change of the integrated flow rate can be performed during the water supply. By doing so, when it is noticed that the set flow rate is too low or too high during water supply, the set flow rate can be immediately adjusted to an appropriate set flow rate.

In the present invention, the controller is provided with a timer function, and the timer determines the time from the start of the water supply to the stop of the water supply, thereby forming a flow rate detecting means for detecting the integrated flow rate of the water flowing through the water channel. Alternatively, a condenser for accumulating the electric power generated by the generator is provided, and the water supply is stopped at the timing when the charging voltage of the condenser reaches a certain voltage, and the condenser constitutes the flow rate detecting means. However, in the present invention, since the total number of revolutions (total number of revolutions) of the water turbine in the generator accurately corresponds to the total flow rate (total amount of flow) in the water channel, the total flow rate of the generator is used. It is preferable that the flow rate detecting means detects the above. By doing so, it is not necessary to provide a flow rate detecting means separately from the generator, the number of parts constituting the device can be reduced, the structure of the device can be further simplified, and the cost thereof can be further reduced. . In this case, the integrated flow rate can be detected based on the power generation frequency of the generator.

According to the present invention, the electrically driven valve is a valve that can be opened by a human operation without relying on a power source that stores electric power in advance, and a valve operating portion for opening the electrically driven valve is provided. It can be provided (Claim 5). With this configuration, it is possible to eliminate the need for a power source when the electrically driven valve is opened, and thus it is possible to perform this without a power source from the opening to the closing of the valve. That is, it is possible to supply water at the set flow rate without power supply from the start of water supply to the stop of water supply.

If the constant quantity water supply device can be made to have no power supply in this way, it is not necessary to carry out electrical wiring work for connecting the power supply and the constant quantity water supply device as in the case of using a commercial power supply as the power supply. Therefore, it becomes possible to install the fixed quantity water supply device easily and inexpensively. Further, it is possible to solve the problem that the fixed quantity water supply device becomes inoperable at the time of power failure. Alternatively, even when a dry battery or the like is used as a power source, the power consumption of the dry battery or the like can be significantly reduced and the life of the dry battery can be extended.

In this case, the electrically driven valve may be provided with a plunger valve body made of a magnetic material, and the valve operating portion may be provided with a magnet for moving the plunger valve body in the valve opening direction by magnetic force. ). With this configuration, it is possible to easily configure the device in which the electrically operated valve is opened by a person operating the valve operating unit.

In the present invention, the electrically driven valve can be a valve that is opened after the valve is opened, and a valve that is closed after the valve is closed can be a latch-type valve that maintains the state without power supply. (Claim 7). If the electric drive valve is such a latch type valve, it is not necessary to supply power to the electric drive valve to keep the valve open state after the valve is opened. This can be done so as to close the valve, and power consumption can be reduced.

In the case of using this latch type electrically driven valve, a latch magnet is provided in the electrically driven valve so that the valve body which has reached the valve opening position is held at the valve opening position by the magnetic force. It can be set (claim 8).
By doing so, the latch type electric drive valve can be configured with a simple configuration.

In the present invention, the display section for displaying the set flow rate of the integrated flow rate may be an optical display section for electrically performing optical display (claim 9). This makes it possible to clearly display the currently set integrated flow rate.

In the present invention, the display unit is made to display the set integrated flow rate during the setting operation, and the display unit is provided with the function of displaying the remaining amount of water supply or the remaining time of the water supply time after the start of water supply. In addition, it is possible to display the amount of remaining water supply or the remaining time decrease as the amount of water supplied increases or as time passes (claim 1
0, claim 11). If you do this, how much water or the time has already been supplied after the start of water supply,
The advantage is that it is easy to know when the water supply will end. For example, the quantitative water supply device of the present invention is
When it is applied for filling the water, the advantage is that the user can immediately know how much water or time the filling will be completed.

The remaining time of the water supply can be derived by measuring the flow rate per unit time when setting the flow rate at the initial stage of the water supply and calculating the remaining time from the result. When the fixed quantity water supply device of the present invention is attached to a faucet or the like, the flow rate per unit time varies depending on the opening degree of the valve and the like. Therefore, by measuring the flow rate per unit time when setting the flow rate at the initial stage of water supply and deriving the remaining time by calculation (conversion), it is possible to display the more accurate remaining time.

Further, in the present invention, the apparatus may be provided with a stop operating portion such as a stop switch for stopping the water supply during the water supply (claim 12). By doing so, it is possible to stop the water supply as needed during the water supply. For example, even when the set flow rate is too large, the water is excessively supplied by operating the stop operation part. In addition to being able to prevent the above, it is possible to obtain an advantage that by providing the stop operation portion, the constant quantity water supply device can be used in the same manner as a normal faucet.

[0033]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIG. 1 and FIG. 2, reference numeral 10 denotes a constant-volume water supply device of this example, which has a casing 12 having a substantially rectangular shape,
Various mechanical parts are built in the inside. The fixed amount water supply device 10 is provided with a cylindrical connection port 14 and a water supply port 16 which project from the casing 12.

A male screw is formed on the outer peripheral surface of the connection port 14, and the connection port 14 is screw-connected to the female screw of the pipe 18 at this male screw, whereby the constant quantity water supply device 10 is connected to the pipe 1.
It is adapted to be attached to and held at the tip of the No. 8.

As shown in FIG. 3, the constant quantity water supply device 10 of the present embodiment communicates with the tip opening of the connection port 14 and the tip opening of the water supply port 16, and the water flowing from the connection port 14 is supplied to the water supply port 16.
It has a water channel 20 leading to the inside.

A solenoid valve (electrically driven valve) is provided on the water passage 20.
22 and a generator 24 are arranged. The generator 24 has a water wheel 26 arranged on the water channel 20.
Power is generated by rotating the water wheel 26 with the force of the water flow.

Reference numeral 28 is a main valve element of the solenoid valve 22.
The main valve body 28 is a diaphragm type valve body, and when the main valve body 28 is seated on the valve seat 30, the water passage 20 is shut off. That is, the upstream water channel 20a and the downstream water channel 20b are in a non-communication state. A back pressure chamber 32 is formed on the back side of the main valve body 28 (on the right side in FIG. 3 (A)).
8 is seated on the valve seat 30 by the pressure inside the back pressure chamber 32.

The back pressure chamber 32 and the downstream water passage 20b are
The main valve body 28 is communicated through a central hole 34 formed in the central portion of the main valve body 28, and the central hole 34 is closed by a plunger valve body 36 made of a magnetic material.

As shown in FIG. 7, when the plunger valve body 36 moves to the right in FIG. 3 (A) (upward in FIG. 7), the water in the back pressure chamber 32 becomes the downstream side of the main valve body 28. Waterway 2
By flowing out to 0b, that is, the pressure inside the back pressure chamber 32 decreases, the valve opening operation is performed by the water supply pressure of the upstream water passage 20a.

On the other hand, the plunger valve body 36 is shown in FIG.
When the center hole 34 is closed by moving leftward (downward in FIG. 7), the water in the upstream water channel 20a flows into the back pressure chamber 32 through the small hole 37 formed in the main valve body 28. ,
As a result, the pressure inside the back pressure chamber 32 increases, and finally the main valve body 28 closes due to the pressure.

Reference numeral 38 is a solenoid coil of the solenoid valve 22, and the electromagnetic repulsive force of the solenoid coil 38 pushes the plunger valve body 36 leftward in FIG. 3A (downward in FIG. 7). The plunger valve element 36 is urged by the spring 40 in the leftward direction in FIG. 3A (downward in FIG. 7), that is, in the valve closing direction, and also in the rightward direction in FIG. (Upward)
Valve casing 46 in the solenoid valve 22 when moved to
The magnetic force of the plate-shaped latch magnet 42 provided inside resists the biasing force of the spring 40 and maintains the valve open state. Further, the plunger valve body 36 is maintained in its closed state by the urging force of the spring 40 after moving to the valve closed position. Reference numeral 44 is a fixed core made of a magnetic material in the solenoid valve 22.

As shown in FIGS. 3 and 6, a controller (control circuit) 48 is built in the casing 12 in the constant quantity water supply apparatus 10 of the present embodiment, and the solenoid valve 22 has the controller 48. Under the control of 1), the valve closing operation is performed by using the electric power generated by the generator 24 as the driving power.

In FIGS. 3, 4 and 5, reference numeral 50 is a valve operating portion for opening the solenoid valve 22 (starting water supply) and an operation for setting an integrated flow rate of water supply from the water supply port 16. It is a dial handle type setting operation section that also serves as a section, and has a bottomed cylindrical shape having a cylindrical section 52 and a bottom section 54. A ring-shaped magnet 56 is attached and fixed to the bottom portion 54 by a fixing screw 58 inside the setting operation portion 50 and in the center portion in the direction perpendicular to the axis.
As shown in FIG. 4, an uneven slip prevention portion 70 is provided on the outer peripheral portion of the setting operation portion 50.

In the case of the constant quantity water supply device 10 of this example, the solenoid valve 22 is opened by pushing the setting operation portion 50. Further, by rotating this in the left-right direction, the integrated flow rate of the water supply is set to be high or low, or the setting is changed.

In FIGS. 3, 4 and 5, reference numeral 62 is a magnet guide for moving and guiding the magnet 56 when the setting operation portion 50 is pushed in, and has a substantially cylindrical shape. The magnet guide 62 has a large diameter portion 6
4 and a small-diameter guide portion 66 and a flange portion 68, and the flange portion 68 is used for the main body portion 12 of the casing 12.
With the seating on the side surface of A, the large diameter portion 64
The magnet 56 is externally fitted to the valve casing 46, and the magnet 56 is fitted inside the guide portion 66 having a small diameter so as to be movable in the axial direction. The guide portion 66 is slidably fitted on the inner surface of the guide portion 66, and guides the magnet 56 in the axial direction. In this example, the valve casing 46 is the casing 12 of the constant quantity water supply device 10.
Is part of.

A return spring for urging the setting operation part 50 in the return direction is provided between the setting operation part 50 and the stepped part from the large diameter part 64 to the small diameter guide part 66 of the magnet guide 62. 60 is installed,
The setting operation unit 50 is pushed to the left in FIG. 3A against the biasing force of the return spring 60. When the pushing operation force is removed, the setting operation section 50 is returned to the original position by the urging force of the return spring 60.

In FIG. 4, reference numeral 72 denotes an encoder that generates a pulse in accordance with the rotation of the rotary shaft 74. In this example, the pulse generated by the encoder 72 is the controller 4
8 is supplied to the controller 48, and then the controller 48 determines or also changes the integrated flow rate of the water supply.

In FIG. 4, reference numeral 76 is the encoder 72.
A drive member for rotationally driving the rotating shaft 74 of
The cylindrical portion 78 and a large-diameter gear 80 formed at the axial end thereof
And have integrally. The large-diameter gear 80 is a small-diameter gear 8 fixed to the rotary shaft 74 of the encoder 72.
The rotary shaft 74 of the encoder 72 is rotated by the rotation of the driving member 76 to generate the pulse as described above. The driving member 76 is the magnet guide 6
It is fitted to the outer peripheral surface of the large diameter portion 64 of No. 2 and rotates along the outer peripheral surface of the large diameter portion 64.

Here, the main body of the encoder 72 is housed in a housing recess 83 formed in the main body 12A of the casing 12, and the end of the rotary shaft 74 and the gear 82 fixedly mounted on the end are provided in the main body. It projects to the outside of the portion 12A.

The setting operation section 50 is fitted on the cylindrical portion 78 of the drive member 76 so as to be relatively movable in the axial direction. Flat engagement surfaces 88 and 90 are provided on the outer peripheral surface of the cylindrical portion 78 of the drive member 76 and the inner peripheral surface of the cylindrical portion 52 of the setting operation portion 50 at positions separated by 180 ° in the rotational direction. However, they are engaged with each other, whereby the drive member 76 is integrally rotated by the rotation operation of the setting operation section 50. That is, by rotating the setting operation unit 50, the rotary shaft 74 of the encoder 72 is moved through the drive member 76.
Rotates to generate a predetermined pulse.

In FIG. 4, reference numeral 84 denotes a fixing plate for accommodating and fixing the large diameter gear 80 of the driving member 76 and the small diameter gear 82 of the encoder 72 therein.
The drive member 76 and the encoder 72 are pressed against the side surface of the main body portion 12A of the casing 12 by the fixing plate 84, and are prevented from coming off in the axial direction. The fixing plate 84 is fixed to the side surface of the main body 12A with a fastener such as a screw.

A cylindrical portion 86 is provided on the fixed plate 84, and a tip portion of the cylindrical portion 78 of the driving member 76 partially projects from the cylindrical portion 86 to the outside. In this example, the fixed plate 84 is also the fixed amount water supply device 10.
And forms a part of the casing 12.

A male screw is formed on the outer peripheral surface of the cylindrical portion 86 of the fixed plate 84, and a female screw of the inner peripheral surface of the cylindrical retaining ring 92 is screwed thereto. An inward annular locking portion 94 is provided at the axial end of the retaining ring 92. On the other hand, a corresponding annular locked portion 96 is provided on the outer peripheral surface of the dial handle type setting operation portion 50, and the setting operation is performed by the locking action of the locking portion 94 and the locked portion 96. The part 50 is prevented from coming off in the axial direction.

On the outer peripheral surface of the retaining ring 92, an operation for indicating the operation direction when setting or changing the integrated flow rate of the water supply by rotating the setting operation section 50, or when starting the water supply again. A display unit 98 is provided.

As shown in FIGS. 1 and 2, on the front surface of the casing 12, there is provided a display section 100 for displaying the integrated flow rate (set flow rate) set by the operation of the setting operation section 50. Here, the display unit 100 is an optical display unit that electrically displays the set flow rate numerically by the light emission of the 7-segment LED. However, it is of course possible to perform optical display using liquid crystal or the like.

Here, the display unit 100 starts counting down (decrease display) at the start of water supply and displays the remaining amount of water supply. Then, when the display on the display unit 100 becomes 0, the water supply is stopped.

On the front surface of the casing 12, there is also provided a stop switch (stop operation section) 102 for stopping the water supply during the water supply. In this example, when the stop switch 102 is turned on, the electromagnetic valve 22 immediately closes to stop water supply regardless of the remaining amount of water supply.

In this example, the generator 24 also serves as a flow rate detecting means for detecting the integrated flow rate of the water supply. The total number of revolutions of the water turbine 26 of the generator 24 corresponds exactly to the total flow rate of water flowing through the water channel 20, and the generation frequency of the generator 24 or the generator 24 in the controller 48 is correct.
The integrated flow rate of the water channel 20 is detected by detecting the total number of pulses accompanying the rotation of the water turbine 26 supplied from. In response to the result, the display unit 100 counts down the display by the signal from the controller 48.

Next, the operation of the quantitative water supply device 10 of this example will be described below. In the case of the constant quantity water supply device 10 of the present example, when the dial handle type setting operation part 50 is pushed leftward in FIG. 3 (A) and downward in FIG. 7, the magnet 56 attached and fixed to the bottom part 54 is also moved in the same direction. Move forward.

When reaching the forward end, the attraction force (magnetic force) of the magnet 56 acts on the plunger valve body 36 of the solenoid valve 22 via the fixed core 44, and the plunger valve body 36 is moved to the position shown in FIG. ) It moves rightward in the middle and upward in FIG. 7, where the plunger valve element 36 operates to open the valve from the closed state shown in FIGS. 3 (A) and 7 (I). Figure 7 (I
I) shows the open state of the plunger valve body 36.

Thus, the plunger valve body 3 which has reached the valve opening position
6 is held at its valve opening position by the attraction force (magnetic force) of the latch magnet 42 built in the solenoid valve 22. Therefore, even if the operating force is removed by releasing the hand from the pushed setting operation unit 50, that is, even if the setting operation unit 50 returns to the original position by the urging force of the return spring 60, the plunger valve body 36 continues to open. Held in valve position.

When the plunger valve body 36 reaches the valve opening position, the central hole 34 in the main valve body 28 is opened, and the water in the back pressure chamber 32 is closed by the central hole 3 in the main valve body 28.
4 to the downstream water channel 20b. At this point, the pressure inside the back pressure chamber 32 decreases, and therefore the main valve body 28
Is pushed up rightward in FIG. 3 (A) and upward in FIG. 7 by the water supply pressure in the upstream water passage 20a, and the main valve body 28 opens. FIG. 7 (III) shows the state at this time.

As a result of the main valve body 28 opening, the upstream side water passage 20a and the downstream side water passage 20b are brought into communication with each other, and here, the water from the pipe 18 is fed from the water supply port 16 to the state shown in FIG. Water supply is started downward (water discharge is started).

In the fixed quantity water supply apparatus 10 of the present embodiment, when the water supply is started as described above, the generator 2 provided on the water channel 20.
4 generates electricity by the water flow of the water channel 20. Then, the electric power generated there is supplied to the controller 48 and the display unit 100.

Then, when the setting operation section 50 is rotated, a number is optically displayed on the display section 100 according to the operation amount (rotation amount). That is, the set flow rate is optically displayed. Therefore, the rotational position of the setting operation unit 50 is adjusted so that the display by the display unit 100 is the total flow rate of the supplied water (the integrated flow rate),
Adjust so that the set flow rate is the total flow rate of the required water supply.

As shown in FIG. 6, the setting operation unit 5
When 0 is rotationally operated, its rotational motion is transmitted to the rotary shaft 74 of the encoder 72 via the drive member 76 as described above. Then, according to the rotation of the rotary shaft 74, a pulse is supplied from the main body of the encoder 72 to the controller 48. In response to this, the controller 48 sends a signal to the display unit 100 to optically display the set flow rate.

After setting the integrated flow rate as described above,
When the water supply continues, the display unit 100 counts down the display, and when the number finally becomes 0, the controller 48 supplies the valve closing signal to the solenoid valve 22, and the solenoid valve 22 is turned on. The valve is closed by the electric power generated by the generator 24.

In this example, when the stop switch 102 is turned on after the start of water supply, the controller 48 immediately switches the solenoid valve 22 to the solenoid valve 22 at that point in time, even though the water supply is in progress, that is, there is a remaining water supply. A valve closing signal is sent to the solenoid valve 22, and the solenoid valve 22 closes the valve under the electric power generated by the generator 24 to stop the water supply.

In the constant quantity water supply device 10 of the present embodiment as described above, this can be performed without power supply from the opening of the solenoid valve 22 to the closing thereof. That is, it is possible to supply water at the set integrated flow rate without power supply from the start of water supply to the stop of water supply.

Since the fixed quantity water supply device 10 can be made to have no power source in this way, electric wiring work for connecting the power supply and the constant quantity water supply device 10 is performed as in the case of using a commercial power supply as the power supply. Therefore, the fixed quantity water supply device 10 can be installed easily and inexpensively. This also solves the problem that the fixed quantity water supply device 10 becomes inoperable during a power failure.

Further, in the constant quantity water supply device 10 of this example,
Since the water is quantitatively supplied electrically, the device can be made compact with a simple structure and can be highly reliable with few failures.

In the present example, the display unit 100 for displaying the set flow rate also has a function of displaying the remaining amount of water supply, and since the remaining amount of water supply is decreased as the amount of water supplied increases, it is possible to indicate that after the start of water supply. At present, there is an advantage that the user can immediately know how much water is already supplied and when the water supply will end. For example, when the fixed amount water supply device 10 is used for filling the bathtub with water or filling water, the user can immediately recognize how much the filling water will be finished. Here, in this example, the display unit 100 is an optical display unit, which allows more clear display.

Further, in this example, since the generator 24 also serves as a flow rate detecting means for detecting the integrated flow rate, it is not necessary to provide a flow rate detecting means separately from the generator 24, and the constant amount water supply device 10
It is possible to reduce the number of parts constituting the device, simplify the structure, and reduce the cost.

Further, in this embodiment, the solenoid valve 22 is a latch type valve which holds the opened state after the valve is opened and the closed state when there is no power supply.
After the valve is opened, it is not necessary to continuously supply power to the solenoid valve 22 for maintaining the valve open state, and power can be supplied only when the valve is closed to close the valve. Power consumption can be reduced.

In this example, since the stop switch 102 is provided in the constant quantity water supply device 10, the water supply can be stopped as needed during the water supply. Therefore, even when the set flow rate is too large, the stop is stopped. There is an advantage that it is possible to prevent excessive water supply by pressing the switch 102, and it is possible to use the constant quantity water supply device 10 in the same manner as a normal faucet.

In the constant quantity water supply apparatus 10 of this example, it is possible to newly set or change the set flow rate after starting the water supply and during the water supply. In this case, when the setting operation unit 50 is rotated, the display on the display unit 100 immediately changes according to the operation amount, so that the set flow rate can be appropriately changed based on the display. By doing so, when it is noticed that the set flow rate is too low or too high during the water supply, the set flow rate can be immediately adjusted to an appropriate set flow rate.

Although the embodiment of the present invention has been described in detail above, this is merely an example. For example, in the above example, the electric power generated by the generator 24 is directly supplied to the solenoid valve 22 or the like. However, the electric power generated by the generator 24 is temporarily stored by the storage means and then supplied to the solenoid valve 22 or the like. It is also possible to do so.

Further, in the above example, a power source such as a battery is not provided, but in some cases, a battery may be provided and used as an auxiliary power source, and the auxiliary power source keeps the controller 48 constantly operating. Is. In this case, according to the present invention, when starting and stopping the water supply, this can be performed without a power source, so that the power source of the battery or the like can be used only as an auxiliary power source, and therefore the power source of such a battery or the like can be used. Even when it is used, its power consumption can be remarkably reduced, the battery life can be extended, and the maintenance work for battery replacement and the like can be reduced.

Alternatively, in the above example, the solenoid valve 22 is operated to be opened by operating the setting operation section 50. However, in some cases, the solenoid valve 22 is operated to be opened by turning on an electric switch. It is also possible to say eggplant.

In the above example, the display unit 100 counts down the display of the remaining amount of water supply as the amount of water supply increases, that is, as the remaining amount of water supply decreases. It is also possible to count down, or it is also possible to arrange a display part for counting down and a display part for holding the set flow rate as it is regardless of the amount of water supplied and the time. In this case, when changing the setting of the set flow rate during water supply, it is possible to perform the operation using the display unit that holds the set flow rate as a guide, and there is an advantage that the setting change operation can be performed more easily and properly. can get.

Further, the constant quantity water supply device of the present invention can be used for various purposes, and the present invention can be constructed in variously modified forms without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external appearance of a constant quantity water supply device according to an embodiment of the present invention.

FIG. 2 is a front view and a side view of the same fixed amount water supply device.

FIG. 3 is a diagram showing an internal structure of the same fixed amount water supply device.

FIG. 4 is a perspective view showing the same fixed amount water supply device in a disassembled state into respective members.

FIG. 5 is a cross-sectional view showing the same fixed amount water supply device disassembled into respective members.

FIG. 6 is a block diagram showing a connection relationship between respective functional units in the same constant quantity water supply device.

FIG. 7 is an operation explanatory view of a solenoid valve and a setting operation unit in the same constant quantity water supply device.

[Explanation of symbols]

10 quantitative water supply device 20 waterways 22 Solenoid valve (electrically driven valve) 24 generator 26 Turbines 28 Main valve body 36 Plunger valve body 42 Latch magnet 48 controller 50 Setting operation section 56 magnet 100 display 102 Stop switch (stop operation part)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F16K 31/11 F16K 31/11 F term (reference) 2D060 CA04 CA07 CA13 3H055 CC03 DD07 DD17 DD40 EE03 EE04 FF18 3H106 DA07 DA23 DB02 DB12 DB23 DB32 DC02 DD03 EE25 EE34 FB42 HH10 KK09

Claims (12)

[Claims] 1. A quantitative water supply device for stopping water supply when an integrated flow rate of water supply reaches a set flow rate, comprising: (a) a water turbine disposed on a water channel, and a generator for generating electricity by the water flow of the water channel. And (b) an electrically driven valve for opening and closing the water channel, (c) a flow rate detecting means for detecting an integrated flow rate of water flowing through the water channel, and (d) the electrically driven valve when the integrated flow rate reaches the set flow rate. A controller for closing the valve by the electric power generated by the generator, (e) a setting operation section for setting and operating the set flow rate, and (f) a display section for displaying the set flow rate, A fixed amount of water supply device. 2. The constant quantity water supply device according to claim 1, wherein the electrically driven valve is an electromagnetic valve. 3. The constant quantity water supply device according to claim 1, wherein the set flow rate of the integrated flow rate is variable. 4. The constant quantity water supply device according to claim 1, wherein the generator also serves as a flow rate detecting means for detecting the integrated flow rate. 5. The electrically driven valve according to any one of claims 1 to 4, wherein the electrically driven valve is a valve that can be opened by a human operation without relying on a power source that stores electric power in advance. The constant amount water supply device, which is provided with a valve operation portion for opening operation of the. 6. The valve according to claim 5, wherein the electrically driven valve has a plunger valve body made of a magnetic material, and the valve operating section has a magnet for moving the plunger valve body in a valve opening direction by magnetic force. A constant volume water supply device characterized by being. 7. The latch type valve according to claim 1, wherein the electrically driven valve holds the opened state after the valve is opened and the closed state after the valve is closed without power supply. A constant amount water supply device characterized in that. 8. The constant quantity water supply device according to claim 7, wherein the latch-type electrically driven valve has a latch magnet that holds the valve body in a valve opening position by magnetic force. 9. The constant quantity water supply device according to claim 1, wherein the display unit is an optical display unit that electrically performs optical display. 10. The display unit according to any one of claims 1 to 9, wherein the display unit displays the remaining amount of water supply, and the remaining amount of water supply is reduced as the amount of supplied water increases. A quantitative water supply device characterized in that 11. The display unit according to any one of claims 1 to 9, wherein the display unit displays the remaining time of the water supply time, and the remaining time is reduced and displayed as the water supply time elapses. A quantitative water supply device characterized in that 12. The constant quantity water supply device according to claim 1, further comprising a stop operation portion for stopping water supply during water supply.