JPH08302774A - Automatic faucet device - Google Patents

Abstract

PURPOSE: To make it possible to automatically store water to a hot water apparatus when an automatic faucet device is installed by providing a reset mode controller to a controller, and detecting a power-on for supplying to the controller to control the opening and closing of a solenoid valve. CONSTITUTION: When a DC power source Vd is made to a controller 17, the controller 17 detects a power-on to generate solenoid valve driving signals Do for a specified time, and a solenoid valve 7 is in an open state. Water from a water supply source 2 flows to a primary side water supply way 6, solenoid valve 7 and secondary side water supply ways 8a, 8b and 8c from a cut-off valve 3a in an open state through a constant flow valve 4 and a chucking valve 5 to store a specific amount of water in a hot water apparatus 9. When a human body detector 15 is shielded with hands, the controller 17 outputs the solenoid valve driving signals Do corresponding with an opening and closing mode based on detection signals Sa. Water from the primary side water supply way 6 flows in the hot water apparatus 9 and a mixed valve 11 through the secondary water supply way 8. Hot water in the hot water apparatus 9 flows into the mixed valve 11 through a hot water supply way 10, and it is mixed with water from a secondary water supply way 8d, and it is discharged from a discharge port 14 through a mixed water channel 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic faucet device using a hot water storage type hot water source as a hot water supply source.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Publication No. 5-21568, a conventional automatic faucet device has a solenoid valve for opening and closing a water supply passage, a water heater, a discharge pipe for discharging mixed water, and a discharge pipe. A human body detector (photoelectric switch) provided, a reflector for shielding the human body detector, and a control box for controlling the opening and closing of the solenoid valve based on a detection signal from the human body detector are provided.

After the installation of the automatic faucet device, the first storage of water in the water heater is performed by hand, in front of the human body detector provided on the discharge pipe.
Alternatively, it is performed by continuously shielding with a reflector provided in the vicinity of the human body detector. The control box holds the electromagnetic valve in an open state and stores a predetermined amount of water in the water heater based on the continuous detection signal from the human body detector.

It is also known that, in the conventional automatic faucet device, the human body detector is momentarily shielded so that the electromagnetic valve is continuously opened to store the first water in the water heater. There is.

Further, in the conventional automatic faucet device, the human body detector is repeatedly shielded and the electromagnetic valve is opened for a predetermined time each time to supply water stepwise to store water in the water heater. Are known.

As described above, in the conventional automatic faucet device, the first storage of water in the water heater is performed by shielding the human body detector.

[0007]

In the conventional automatic faucet device, when a predetermined amount of water is stored in the water heater, the shielding by the hand or the reflector is stopped, or the human body detector is detected again. There is a problem that the work of setting the water storage is troublesome.

Further, in the conventional automatic faucet device, the human body detector has to be shielded by hand repeatedly until the amount of water stored in the water heater reaches a predetermined amount, which causes a troublesome task of setting the water storage.

Further, in the conventional automatic faucet device, since the solenoid valve is electrically driven, there is a problem that water cannot be stored in the water heater during a power failure.

The present invention has been made to solve the above problems, and an object thereof is to provide a highly convenient automatic faucet device capable of automatically storing water in a water heater when the device is installed. It is in.

Another object of the present invention is to provide an automatic faucet device which can store water manually even in the case of a power failure.

[0012]

In order to solve the above problems, the automatic faucet device according to the present invention is characterized in that the control means is provided with a reset mode control means.

Further, the automatic faucet device according to the present invention is provided with the power-on detection unit and the timer unit in the reset mode control means, and detects the power-on to open the solenoid valve for a predetermined time. It is characterized by

Furthermore, the automatic faucet device according to the present invention is
The reset mode control means is provided with a power-on detection unit and a full-water detection unit, and the electromagnetic valve is opened until the power-on is detected and the full-water detection unit detects full water in the water heater.

Also, the automatic faucet device according to the present invention is characterized in that the reset mode control means is provided with a control changing means.

Further, the automatic faucet device according to the present invention is
The control means is provided with a connector for transmitting a detection signal from the human body detector and supplying a power supply detection signal to the reset mode control means.

Further, the automatic faucet device according to the present invention comprises a bypass passage that bypasses the electromagnetic valve and connects the primary side water supply passage and the secondary side water supply passage, and the bypass valve is provided in the middle of the bypass passage. It is characterized in that a discharge passage is connected in the middle of the bypass passage on the side of the water supply source and a discharge valve is provided in the middle of the discharge passage.

Further, the automatic faucet device according to the present invention is
When the water shutoff valve installed near the discharge valve and the water supply source of the primary side water supply channel is closed when the water shutoff valve is open, and when the water shutoff valve is closed Is characterized by performing an interlocking operation of opening the discharge valve.

[0019]

In order to solve the above-mentioned problems, the automatic faucet device according to the present invention is provided with the reset mode control means in the control means, so that the opening / closing control of the solenoid valve can be performed by detecting the turning on of the power source.

Further, in the automatic faucet device according to the present invention, since the reset mode control means is provided with the power-on detection unit and the timer unit, the power-on is detected and the solenoid valve is opened for a predetermined time. Can be

Further, the automatic faucet device according to the present invention is
Since the reset mode control means is provided with the power-on detection unit and the full-water detection unit, the electromagnetic valve can be opened until the power-on is detected and the full-water detection unit detects full-water of the water heater.

Further, in the automatic faucet device according to the present invention, the reset mode control means is provided with the control change means, and the power-on signal from the power-on detection section is detected to open / close the open / close mode control means for a predetermined time. Since the mode is changed, the opening / closing control of the solenoid valve can be performed within a predetermined time based on the changed opening / closing mode.

Further, the automatic faucet device according to the present invention is
Since the control means is provided with a connector for transmitting the detection signal from the human body detector and supplying the power supply detection signal to the reset mode control means, after the connection of this connector, the water heater by the full water detection portion for a predetermined time The solenoid valve can be kept open until the full water level is detected.

Further, the automatic faucet device according to the present invention comprises a bypass passage that bypasses the solenoid valve and connects the primary water supply passage and the secondary water supply passage, and the bypass valve is provided in the middle of the bypass passage. Since the discharge passage is connected in the middle of the bypass passage on the side of the water supply source and the discharge valve is provided in the middle of the discharge passage, a part of the bypass passage can also be used as a part of the discharge passage.

Further, the automatic faucet device according to the present invention is
When the water shutoff valve installed near the discharge valve and the water supply source of the primary side water supply channel is closed when the water shutoff valve is open, and when the water shutoff valve is closed Since the interlocking operation of opening the discharge valve is performed, the opening / closing operation of the discharge valve can be performed only by opening / closing the water shutoff valve.

[0026]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall configuration diagram of an automatic faucet device according to the present invention. In FIG. 1, the automatic faucet device 1 is driven by a human body detector 15 provided on a discharge pipe 13, a connector 16 including 16a and 16b for transmitting a detection signal Sa from the human body detector 15, and a DC power supply Vd. The device 17 includes a solenoid valve 7 which is controlled to open and close by a solenoid valve drive signal Do from the control unit 17, a water heater 9 for boiling hot water by heating with an AC power source Va, and a mixing valve 11 for mixing water and hot water.

Further, the automatic faucet device 1 includes a water stop valve 3a, a constant flow valve 4, a check valve 5, a primary side water supply passage 6, a secondary side water supply passage 8, a bypass passage 18, a bypass valve 19, and a discharge passage 20. ,
The discharge valve 3b is provided.

The control means 17 has a memory such as a ROM, various arithmetic functions, and processing functions based on a microprocessor, and outputs an open / close mode signal Sm based on the detection signal Sa from the detector 15 and resets it. Mode control means 2
The opening / closing mode control means 25 for controlling the opening / closing of the solenoid valve 7 via 6, and the solenoid valve 7 by detecting the power supply detection signal Sc generated when the DC power supply Vd is turned on or the connector 16 is connected.
The reset mode control means 26 is provided for controlling the opening / closing of the switch and for providing the mode control signal Sh for controlling the mode of the opening / closing mode control means 25.

The control means 17 has a built-in connector 16b for receiving the detection signal Sa from the human body detector 15.

FIG. 2 is a block diagram of the essential parts of the control means of the automatic faucet device according to the present invention. In FIG. 2, the control means 17 includes an opening / closing mode control means 25, a reset mode control means 26, and a connector 16b.

The opening / closing mode control means 25 is a selection switch such as a slide switch or a jumper switch (not shown) for selecting the three types of opening / closing modes A, B and C, and RO.
Equipped with memory such as M, select the mode with the selection switch,
The reset mode control means 26 is provided with a binary open / close mode signal Sm corresponding to the three open / close modes A, B, and C stored in advance in the memory.

For example, the level of the open / close mode signal Sm is
In the opening / closing mode A, the H level is detected only when the human body detector 15 is being detected, in the non-detection mode is the L level, and in the opening / closing mode B, the H level is continuously detected by the human body detector 15 and the L level is detected again. In the case of the open / close mode C, the human body detector 15 instantaneously detects the level, and the level becomes H level for a predetermined time (usually, a short time required for cleaning).

The opening / closing mode control means 25 is controlled by the control change means 31 provided in the reset mode control means 26, which will be described later, based on the power supply detection signal Sc output when the DC power supply Vd is turned on or the connector 16 is connected. The mode control signal Sh is received.

The reset mode control means 26 comprises a power-on detection section 27, a timer section 28, a control change means 31, a logical sum operation section 29, and a drive section 30.

The power-on detector 27 is composed of, for example, a time constant circuit such as a capacitor and a resistor, a pulse circuit, etc., detects the application of the DC power Vd, and supplies it to the opening / closing mode control means 25 and the reset mode control means 26. DC power supply Vd
Is stabilized, the pulsed power-on signal Sr is provided to the timer unit 28 and the control changing unit 31.

In addition, the power-on detection unit 27 uses the DC power source V
After d is stably supplied, the connection of the connector 16 causes the same power supply detection signal Sc as the DC power supply Vd (for example,
It is driven by an H-level signal) and outputs a power-on signal Sr.

The timer unit 28 is provided with a time counting circuit and is activated by a power-on signal Sr from the power-on detection unit 27, and outputs, for example, an H-level timer output signal St to the logical sum operation unit 29 for a predetermined time.

The time width of the timer output signal St is set to a large value based on the tank capacity of the water heater 9, the water supply pressure, and the characteristics of the constant flow valve 4 shown in FIG. Long for small tank capacity or low water pressure, short for small tank capacity or high water pressure.

The control changing means 31 is provided with, for example, a timing circuit, is activated by the power-on signal Sr from the power-on detecting section 27, and outputs the mode control signal Sh to the open / close mode control means 25 for a predetermined time.

The opening / closing mode control means 25 receives the mode control signal Sh from the control changing means 31 output when the power source Vd is turned on, and automatically outputs the opening / closing mode signal Sm for a predetermined time (for example, 5 minutes). ), For example, open / close mode B
To control. It should be noted that the open / close mode C may be configured to be controlled forcibly.

When the open / close mode signal Sm from the open / close mode control means 25 or the timer output signal St from the timer unit 28 is at the H level, the OR operation unit 29 outputs the H level logical OR signal Sw to the drive unit 30. provide.

The drive unit 30 is, for example, a transistor or FE.
It is composed of a switching element such as T, and outputs the solenoid valve drive signal Do based on the logic signal Sw from the logical sum calculation unit 29 to drive the solenoid valve 7, and the timer output signal St is set to the L level until FIG. Water is supplied to the water heater 9 shown in FIG.

When the timer output signal St becomes L level, the solenoid valve 7 is closed and the water storage in the water heater 9 shown in FIG. 1 is completed. After the water is stored, the opening / closing mode control means 25, based on the detection signal Sa from the human body detector 15, corresponds to one of the opening / closing modes A, B, and C selected by the selection switch (not shown). The Sm is provided to the logical sum operation means 29.

The logical sum operation means 29 determines the opening / closing mode signal S
The logical sum signal Sw of m is output to the drive unit 30, and
The drive unit 30 controls opening / closing of the solenoid valve 7 by the solenoid valve drive signal Do.

As described above, in the automatic faucet device 1, when the device is installed, the control means 17 detects the turning on of the DC power supply Vd or the connection of the connector 16, and the electromagnetic valve drive signal D is detected for a predetermined time.
It is possible to output o and open the solenoid valve 7.

Next, the general operation of the automatic faucet device 1 will be described with reference to FIG. DC power supply Vd is control means 17
When it is turned on, the control means 17 detects the turning on of the power source and generates the solenoid valve drive signal Do for a predetermined time to open the solenoid valve 7.

Water from the water supply source 2 is supplied to the water shutoff valve 3 in an open state.
flow from a through the constant flow valve 4 and the check valve 5 to the primary side water supply passage 6, the solenoid valve 7, and the secondary side water supply passages 8a, 8b, 8c,
A predetermined amount of water is stored in the water heater 9. The water stored in the water heater 9 is electrically heated by the AC power supply Va to become hot water.

When the human body detector 15 is shielded by hand in the automatic faucet device 1, the control means 17 causes the solenoid valve drive signals corresponding to the opening / closing modes A, B and C based on the detection signal Sa of the human body detector 15. Output Do. The solenoid valve 7 is driven by the solenoid valve drive signal Do to be in the open state, and the water from the primary side water supply passage 6 passes through the secondary side water supply passage 8 and the water heater 9 and the mixing valve 1.
Flow into 1.

The hot water of the water heater 9 flows into the mixing valve 11 via the hot water supply passage 10, is mixed with the water from the secondary side water supply passage 8d, and is discharged from the discharge port 14 via the mixed water passage 12.

At the time of a power failure, the solenoid valve 7 is closed, so that the primary side water supply passage 6 and the secondary side water supply passage 8 are shut off. In the case of power failure, the bypass valve 19 is opened while the drain valve 3b is closed, and the water is stored in the bypass paths 18a, 1
8b, bypass valve 19, bypass passage 18c, secondary side water supply passage 8c, and water heater 9 are used for water supply.

Draining of the water heater 9 is performed by closing the water shutoff valve 3a and opening the bypass valve 19 and the discharge valve 3b. The water in the water heater 9 passes through the secondary side water supply passage 8c that also serves as the discharge passage, the bypass passage 18c, the bypass valve 19, the bypass passage 18b, the discharge passage 20, and the discharge valve 3b and is discharged.

The water shutoff valve 3a and the water discharge valve 3b are constructed as one water shutoff / drain valve 3 having a diaphragm type structure for controlling the opening and closing of the valve by the pressure of water, for example.

The diaphragm-type water stop / discharge valve 3 controls the discharge of the discharge valve 3b by the pressure of the water on the secondary side of the water stop valve 3a, and when the water stop valve 3a is in the open state, the discharge valve When the water shutoff valve 3a is closed, the interlocking operation is performed so that the discharge valve 3b is opened.

FIG. 3 shows a block diagram of the essential part of another embodiment of the control means of the automatic faucet device according to the present invention. Below, FIG.
Will be described with reference to FIG. In FIG. 3, the control unit 32 has a reset mode control unit 33 and a timer unit 28.
Is equipped with a full water detector 34 instead of the
Alternatively, after connecting the connector 16, the electromagnetic valve 7 is kept open until the full water detection of the water heater 9 by the full water detection unit 34 is performed.
It is different from the control means 17 shown in FIG.

The full-water detector 34 includes, for example, a flip-flop circuit, is activated by the power-on signal Sr from the power-on detector 27, and outputs the H-level full-water output signal Sf to the logical sum calculator 29. When a full water detection signal from a sensor (not shown) that detects full water in the water heater 9 is input, L
The level full water output signal Sf is output.

The logical sum operation unit 29 uses the open / close mode signal Sm from the open / close mode control means 25 or the full water detection unit 34.
When the full water output signal Sf from is at H level, the H level logical sum signal Sw is provided to the drive unit 30.

When the logical signal Sw from the logical sum calculation unit 29 is, for example, H level, the drive unit 30 outputs the solenoid valve drive signal Do to drive the solenoid valve 7, and the full water output signal S
Water is supplied to the water heater 9 until f becomes L level.

When the full water output signal Sf becomes L level, the solenoid valve 7 is closed and the water storage of the water heater 9 is completed.

FIG. 4 is a schematic view of the essential part of another embodiment of the automatic faucet device according to the present invention. In the figure (a), the difference from the automatic faucet device 1 shown in FIG. 1 is that the bypass valve 19 is provided in the middle of the bypass passage 18a, and the water in the water heater 9 is discharged without operating the bypass valve 19. can do.

In FIG. 1B, the difference from the automatic faucet device 1 shown in FIG. 1 is that instead of the bypass valve 19 and the discharge valve 3b, a unit valve 35 composed of, for example, a single lever unit, a one-stop unit or the like is used. Because of the provision, it is possible to open and close the bypass valve 19 and the discharge valve 3b once.

For example, when the lever 35a of the unit valve 35 is at the position indicated by the solid line, the water from the water supply source 2 bypasses the bypass passage 18a, the unit valve 35 and the bypass passage 18c to supply water. When the lever 35a is at the position indicated by the broken line, the water shutoff valve 3a is closed, and the water in the water heater 9 is discharged through the bypass passage 18c, the unit valve 35, and the discharge passage 20.

In the figure (c), the difference from the automatic faucet device 1 shown in FIG. 1 is that instead of the discharge valve 3b, a check valve 36 is provided.
That is the point. The check valve 36 is provided with the primary side water supply passage 6 and the bypass passage 18 when the water shutoff valve 3a is open.
a, Water pressure is applied through the discharge passage 20, so that the closed state is maintained.

When the water in the water heater 9 is discharged, the water shutoff valve 3a is closed to reduce the water pressure applied to the check valve 36. When the water pressure is weakened, the check valve 36 is opened, and the water in the water heater 9 passes through the bypass passage 18c, the bypass valve 19 in the opened state, the bypass passage 18b, the discharge passage 20,
Discharge through the check valve 36.

As described above, the automatic faucet device 1 can automatically store water in the water heater 9 when the device is installed, and can also manually store water in the event of a power failure.

[0065]

As described above, the automatic faucet device according to the present invention is provided with the reset mode control means in the control means and can detect the turning on of the power source to control the opening / closing of the solenoid valve. Water can be stored in the water heater automatically when the device is installed.

Further, the automatic faucet device according to the present invention is provided with the power-on detection unit and the timer unit in the reset mode control means, and detects the power-on to open the solenoid valve for a predetermined time. Therefore, the water in the water heater can be automatically stored when the device is installed.

Further, the automatic faucet device according to the present invention is
The reset mode control means is equipped with a power-on detection unit and a full water detection unit, and the solenoid valve can be opened until the full water detection unit detects that the water heater is full. At this time, the water in the water heater can be stored automatically.

Further, in the automatic faucet device according to the present invention, the reset mode control means is provided with the control changing means, and the power-on signal from the power-on detection section is detected to open / close the open / close mode control means for a predetermined time. Since the mode can be changed and the opening / closing control of the solenoid valve can be performed based on the changed opening / closing mode within a predetermined time, it is possible to easily store water in the water heater even when the apparatus is installed manually.

Further, the automatic faucet device according to the present invention is
The control means is provided with a connector for transmitting the detection signal from the human body detector and supplying the power supply detection signal to the reset mode control means, and after the connection of this connector, a predetermined time or full water of the water heater by the full water detector Since the solenoid valve can be opened until detection, water can be automatically stored in the water heater when the device is installed.

Further, the automatic faucet device according to the present invention comprises a bypass passage that bypasses the solenoid valve and connects the primary side water supply passage and the secondary side water supply passage, and the bypass valve is provided in the middle of the bypass passage. By connecting a discharge path in the middle of the bypass path on the side of the water supply source and providing a discharge valve in the middle of the discharge path, part of the bypass path can also be used as a part of the discharge path, so even in the event of a power failure, the water heater Water can be stored and the cost of piping can be reduced.

Furthermore, the automatic faucet device according to the present invention is
When the water shutoff valve installed near the discharge valve and the water supply source of the primary side water supply channel is closed when the water shutoff valve is open, and when the water shutoff valve is closed In addition, since the interlocking operation to open the drain valve is performed, the drain valve can be opened and closed by simply opening and closing the water stop valve. It can be reduced.

Therefore, it is possible to provide a highly convenient automatic faucet device capable of automatically storing water in the water heater when the device is installed.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an automatic faucet device according to the present invention.

FIG. 2 is a block diagram of a main part of control means of the automatic faucet device according to the present invention.

FIG. 3 is a block diagram of the essential part of another embodiment of the control means of the automatic faucet device according to the present invention.

FIG. 4 is a schematic view of the essential part of another embodiment of the automatic faucet device according to the present invention.

[Explanation of symbols]

1 ... Automatic faucet device, 2 ... Water supply source, 3 ... Water stop / drain valve, 4
... constant flow valve, 5, 36 ... check valve, 6 ... primary side water supply channel, 7 ... solenoid valve, 8 ... secondary side water supply channel, 9 ... water heater, 10
... hot water supply channel, 11 ... mixing valve, 12 ... mixing channel, 13 ... discharge pipe, 14 ... discharge port, 15 ... human body detector, 16 ... connector, 17, 32 ... control means, 18 ... bypass passage, 19 ...
By-pass valve, 20 ... Ejection path, 25 ... Opening / closing mode control means, 26, 33 ... Reset mode control means, 27 ... Power-on detection section, 28 ... Timer section, 29 ... OR operation section, 3
0 ... Drive unit, 31 ... Control change means, 34 ... Full water detection unit,
35 ... Unit valve, 3a ... Water stop valve, 3b ... Discharge valve, 8
a, 8b, 8c ... Primary side water supply channel, 16a, 16b ... Connector, 18a, 18b, 18c, 18d ... Secondary side water supply channel, 35a ... Lever, Va ... AC power supply, Vd ... DC power supply, Sa ... Detection signal, Do ... Solenoid valve drive signal, Sm ... Open / close mode signal, Sc ... Power detection signal, Sr ... Power on signal, St ... Timer output signal, Sf ... Full water output signal, Sh
... Mode control signal, Sw ... OR signal, Do ... Solenoid valve drive signal.

Claims (7)

[Claims] 1. A primary side water supply path connecting a water supply source and a solenoid valve, a secondary side water supply path connecting a hot water storage type water heater and the solenoid valve, and a discharge pipe connected to an outflow side of the water heater. An automatic faucet provided with a human body detector provided, control means provided with an opening / closing mode control means for performing opening / closing control of the solenoid valve based on a detection signal of the human body detector, and a power supply supplied to the control means. In the apparatus, an automatic water faucet device, wherein the control means is provided with a reset mode control means, and the opening / closing control of the electromagnetic valve is performed by detecting the turning on of the power source. 2. The reset mode control means includes a power-on detection section and a timer section, and detects the power-on to open the electromagnetic valve for a predetermined time. 1. The automatic faucet device according to 1. 3. The reset mode control means includes the power-on detector and a full-water detector, and detects the power-on to open the solenoid valve until the full-water detector detects full water in the water heater. The automatic faucet device according to claim 1, which is brought into a state. 4. The reset mode control means is provided with a control change means, and detects a power-on signal from the power-on detection section to change the open / close mode of the open / close mode control means for a predetermined time. The automatic faucet device according to claim 1. 5. The control means comprises a connector for transmitting the detection signal from the human body detector and supplying a power supply detection signal to the reset mode control means, and for a predetermined time after the connection of the connector, Alternatively, the electromagnetic faucet device according to claim 2 or 3, wherein the electromagnetic valve is kept open until the full water detector detects full water in the water heater. 6. A bypass passage that bypasses the solenoid valve and connects the primary water supply passage and the secondary water supply passage,
With a bypass valve in the middle of this bypass,
2. The automatic faucet device according to claim 1, wherein a discharge passage is connected to the bypass passage on the side of the water supply source, and a discharge valve is provided in the discharge passage. 7. A water shutoff valve provided in the vicinity of the water supply source of the discharge valve and the primary side water supply passage, when the water shutoff valve is in an open state, closes the discharge valve and 7. The automatic faucet device according to claim 6, wherein when the water shutoff valve is in a closed state, an interlocking operation for opening the discharge valve is performed.