JPS6323077A - Automatic water cock device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] According to the present invention, a hot wire type detector is used to detect the user's body.

In particular, the present invention relates to an automatic faucet device that detects heat rays emitted from the palm of the hand and automatically discharges water, so that it can be used even during power outages.

[Conventional technology]

Conventionally, an automatic faucet device that automatically discharges water from a water spout installed in a washbasin, etc. has been used to replace a solenoid valve installed in a part of the water supply piping with a photoelectric detector installed in a position facing the washbasin. It is driven by the detection signal through the control circuit, and as shown in the time chart in Figure 8, the photoelectric detector automatically detects the palm of the hand held out in front of the water spouting device for hand washing, and sends it to the electric control unit. A structure was used in which the solenoid valve was controlled to open and start water supply based on the signal received.

[Problem that the invention seeks to solve]

In this type of automatic faucet device, the electromagnetic valve consumes a large amount of power in the control circuit, while the detector and the electric control circuit consume only a small amount of power.

However, in this type of conventional automatic faucet device, water supply is started after a screening time Tl after the photoelectric detector starts sensing the user's body, and water supply is stopped after a delay time T2 after the detection disappears. Therefore, the time during which the solenoid valve is energized is T4, which is equivalent to the solenoid valve drive signal time. Therefore, the energization time T4 of the solenoid valve corresponds to the hand washing time, and since the cumulative energization time is long, a commercial power source is required.

Therefore, when installing the equipment, the plumbing work will be done by a plumbing contractor, and the automatic faucet system will be done by an electrical contractor.
Different contractors had to be in charge of the construction work, which resulted in problems such as poor work efficiency and a rise in construction costs.

Further, since this type of automatic faucet device uses commercial power, it has a practically fatal drawback that it becomes unusable during a power outage.

The present invention was devised in view of the above problems, and provides an automatic faucet device configured to operate with ultra-low power and capable of using dry batteries as a power source.
The purpose of this invention is to provide an automatic faucet device that does not require an electrician to install the equipment and is not affected by power outages.

[Means for solving problems]

The automatic faucet device according to the present invention aims to achieve the above object by shortening the energization time to the solenoid valve as much as possible. A solenoid valve is incorporated, and the operation of the self-memory solenoid valve is performed by intermittent control of the drive power source via an electric control unit based on a detection signal from a detector installed near the washbasin, such as a washbasin. This is the summary.

Therefore, as the self-memory solenoid valve, the electric vif
Uses an electromagnetic valve that has a self-memory function that stores and maintains the state of valve opening or closing operation caused by the electrical signal applied from part 11 even if the electrical signal disappears. This is what I did.

This type of solenoid valve is designed to minimize the energization time by adding a holding function to the electromagnet constituting the solenoid valve to mechanically or magnetically maintain the open or closed state of the valve part.
When the holding function is achieved, it is not necessary to energize the solenoid valve. A typical example having this holding function is mechanically an alternate type push button switch. The push button switch is reversed between open and closed states for each operation and maintains this state.

In addition, there is a magnetically launching type relay, which has separate open and close coils, and by applying instantaneous current to a designated coil, it is reversed to the open or closed state and maintains that state.

This self-memory type % magnetic valve is provided in the plunger and outside of the pipe line, which acts to move forward and backward with respect to the opening/closing valve body, and moves the valve body to the open or closed position. An electromagnetic coil that generates an electromagnetic force for a movable track, and a permanent magnet that is fixed to a part of the magnetic path formed by the electromagnetic coil and has a magnetic attraction force that maintains the attraction state at the attraction position of the plunger. It can be configured as follows.

Furthermore, it is essential that the detector has low power consumption, and is preferably a hot wire type detector such as a thermistor robometer or a thermopile type infrared sensor.

With the above configuration, the drive power source can be configured with a non-commercial power source such as a dry battery.

[Effect]

The above-mentioned automatic faucet device has the above-mentioned function added to the electromagnet of the self-memory solenoid valve, so when the valve is opened or closed by the detection output of the hot wire detector, the valve is sucked during the opening/closing operation. Alternatively, in order to obtain the electromagnetic force necessary for recovery, power is applied externally to the electromagnetic coil, and the same state is maintained by the magnetic force of a permanent magnet during attraction. Therefore, the driving power applied to the solenoid valve can be applied to the moment when the valve part opens or closes (pulse signal), and compared to a solenoid valve that operates by continuous energization, it is significantly more effective. power consumption can be reduced. As a result, power consumption becomes extremely small, so even small dry batteries can be put to practical use.

〔Example〕

An embodiment of an automatic faucet device according to the present invention will be described below with reference to the drawings. This embodiment is an automatic faucet device in which a water washer is used as a hand wash, and the hand wash can be changed to a washbasin or the like as appropriate, and hereinafter these will be referred to as a water washer 1.

The water washer 1 is attached to the wall of the building, and the rear upper surface has a water discharging device 3 connected to a self-memory solenoid valve 6, which will be described later.
is provided, and the water outlet part 31 at the upper end is connected to the water supply pipe part 4.
It communicates with the solenoid valve 6 via the solenoid valve 6. Further, the water spouting device 3 is provided with a hot wire type detector 5, which will be described later, at a position facing the water spouting portion on the front surface of the body.

The water supply pipe 4 is connected to the discharge flow path 32 of the water discharging device 3 and extends downward inside the body, and has a leg pipe 41 that protrudes from the back surface of the water washer l.
and a water supply connection pipe 42 connected to an outlet 65 opened in the main body 61 of the solenoid valve 6, and both are connected to connect the outlet 65 of the solenoid valve 6 and the discharge channel 32 of the water discharging device 3. Communicate.

The heat ray detector 5 is a well-known detector that detects heat rays emitted from the human body and clothing. Elements that detect heat rays include a thermistor bolometer, a thermopile type infrared sensor, etc. This figure uses a thermopile type infrared sensor, which is small in consideration of the structure of the parts, and the thermopile infrared sensor 51
The cord is made to be substantially horizontal toward the space below the water spout 31, and is fitted in a cartridge type manner into the recess 33 provided on the front of the body of the water spout 3, and the cord taken out from the back of the case 52 is inserted. Pull it out to the back side of the washer 1 and install the electric control section 2, which will be described later.
Connect with.

The solenoid valve 6 is a self-memory solenoid valve including a valve seat 63 between which an inlet 64 and an outlet 65 are formed. A conduit is formed by a bottomed cylindrical guide tube 66 that is airtightly fitted and fixed, and a valve portion 67alJ is connected to the valve seat 63.
<The valve portion is composed of a diaphragm 67 and a valve seat 63 so as to be able to move in and out of the valve. The diaphragm 67 has a cylindrical protrusion 67b protruding from the valve portion 67a, and is configured so that the valve portion 67a is normally separated from the valve seat 63 due to the elastic action of the diaphragm 67, and is also configured to The sealing surface 68a of the magnetic plunger 68, which is slidably installed inside and resiliently supported via a suitably elastic coil spring 78, normally comes into contact with the cylindrical protrusion 67b, and the flow path 69 is closed.
It consists of a structure that closes the Further, an orifice 70 is bored at the same position of the diaphragm 67 to communicate the inlet 64 side and the valve chamber 62, and the structure is such that water pressure on the inlet 64 side is introduced into the valve chamber 62 when the valve section is closed. . - On the other hand, a cylindrical frame 73 made of a magnetic material such as iron is fixed to a plunger receiver 72 made of a magnetic material fixed to the outer end 66a of the guide tube 66 and coaxially with the guide tube 66. Two permanent magnets 75, 75 are fixedly installed between the outer frame 73, and the plunger medium 68 resists the elasticity of the coil spring 78 to bring the attracting surface 68b into contact with the plunger receiver (the fourth
(see figure), the intermediate plate 74. 68 during plunge
．． A circular magnetic path is formed through the plunger receiver 72 and the cylindrical frame 73 to magnetically short-circuit both poles of the permanent magnets 75 and 75, and at the contact position, the attraction in the direction of the plunger receiver 72 is greater than the elasticity of the coil spring 78. It begins to generate power. Reference numerals 76 and 77 denote an attraction coil and a recovery coil, respectively, which are fixed in parallel with the permanent magnets 75 and 75 on the cylindrical frame 73.
normally generates a magnetic force that can attract and slide the plunger 68 toward the plunger receiver 72 against the elasticity of the coil spring 78, and the restoration coil 77 is oriented in the opposite direction in the magnetic path of the permanent magnets 75 and 75 when energized. A magnetic field is generated, and the elasticity of the coil spring 78 overcomes the attraction force, resulting in a structure in which the plunger 68 is moved toward the diaphragm 67 and restored.

The self-memory solenoid valve 6 is driven by a non-commercial power source such as a dry battery 8, is housed in a case 21 together with the electric control unit 2, and is disposed in a space below the water washer 1, with the inlet 64 facing the wall. A water stop valve 43 and a strainer 4 are attached to the underground water supply pipe.
4, and the outlet 65 is connected to the water discharging tool 3 via the supply pipe section 4.

Further, the electric control section 2 is attached to a chassis 22 that is fixed in the case 21 and housed in the case 21, and is electrically connected to the hot wire type detector 5 and the electromagnetic valve 6.

As shown in the time chart of FIG. 7, the electric control section 2 controls the energization of the electromagnetic valve 6' in response to the sensing signal from the hot wire type detector 5, and is equipped with the necessary circuits. After the detector 5 starts sensing and a predetermined selection time Tl (for example, about 50 msec to 15 ec), the solenoid valve is opened.
A drive signal T5 (pulse signal) is generated to open the solenoid valve 6, and the solenoid valve 6 maintains its open state by a self-memory function.

Next, after a predetermined delay time T2 (for example, 0.5 sec to 25 ec) after the hot wire type detector 5 no longer detects the human body, a solenoid valve "close" drive signal T5 (pulse signal) is generated, and the solenoid valve 6 is closed. At the same time, the solenoid valve 6 is configured to maintain the closed state by a self-memory function, and the electric control unit 2 is configured to control the energization time to the solenoid valve 6, that is, the water spout time, during normal hand washing or washing. Abnormal continuous water spouting prohibition time T3 set slightly longer than the required time (for example, 2 min)
~4 lll1n), and the water discharge is stopped when the continuous water discharge time reaches the prohibition time T3.

That is, as shown in the block diagram of FIG. 6, the electric control unit 2 uses a non-commercial power source such as a dry cell battery 8 as a driving power source in conjunction with the electromagnetic valve 6, and a sensing signal of the hot wire type detector 5 is generated. When this occurrence state continues for the sorting time T1, the solenoid valve "open" drive signal T5 is generated, and when the sensing signal disappears and this disappearing state continues for the delay time T2, the solenoid valve "close" drive signal T5 is generated. a timer circuit 25 that generates and resets a solenoid valve "close" drive signal T5 when the activation signal continues to be generated for a prohibition time T3; and a timer circuit 25 that generates an output based on the reset. It includes an output generation blocking circuit 26 that generates a blocking signal, and an output circuit 27 that generates an output that drives the electromagnetic valve 6 when a drive signal is generated.

In this automatic faucet device, when you hold out your palm in front of the water dispensing device 3 to wash your hands, the hot wire type detector 5 automatically detects this and sends a signal to the electric control unit 2 to turn on the electric water. Based on this signal, the control unit 2 opens the solenoid valve 6 to start water supply. This water supply starts after a sorting time Tl after the hot wire detector 5 starts sensing the user's body, and stops after a delay time T2 after the sensing disappears. If the water supply continues abnormally longer than the time required for normal hand-washing or washing, the water supply will automatically stop after the prohibited time T3.

The prohibition time T3 is provided in order to prevent the hot wire type detector 5 from continuing sensing for some reason and preventing the water from flowing out.

That is, in the automatic faucet device, when there is a sensing signal from the hot wire type detector, the solenoid valve drive signal is activated after the selection time Tl, and a pulse signal T5 is commanded to the solenoid valve 6, and this command causes the solenoid valve 6 to open. When the valve state is reached and the detector sensing signal disappears, a pulse signal T5 is generated after a delay time T2, and the solenoid valve 6 is closed. The valve drive signal is a pulse signal, so it is instantaneous (20 to 50 m 5ec) when opening and closing the valve.
It is only necessary to turn on electricity, which can significantly improve power consumption, and it can be sufficiently driven by a non-commercial power source such as a dry battery 8.

[Effects of the Invention] Since the automatic faucet device according to the present invention is configured as described above, the power consumption of the device is extremely low, so dry batteries can be used as a power source. Even when using a faucet device, there is no need for repair work to supply commercial power. Furthermore, since installation work for a commercial power source can be omitted, an electrician is not required during installation, which improves work efficiency and reduces construction costs. In addition, the automatic flushing device of the present invention has excellent features such as being unaffected by power outages and the like.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of an automatic faucet device according to the present invention.
A partially cutaway front view of the automatic faucet device, Fig. 2 is an enlarged cross-sectional view of the swinging part, Fig. 3 is a cross-sectional view of the water discharging device, and Fig. 4 is a front cross-section showing the open state of the self-memory solenoid valve. Figure 5 is a front sectional view showing the same valve closed state, Figure 6 is a block diagram showing the electrical control system, Figure 7 is a time chart of the automatic faucet device of the present invention, and Figure 8 is a diagram of the conventional device. This is a time chart.

Claims (5)

[Claims] (1) In a part of the water supply pipe of a washing machine such as a washbasin or a handwash basin,
A self-memory fluid solenoid valve is incorporated, and the operation of the self-memory solenoid valve is controlled by a detection signal from a detector installed near the wash basin, various hand wash basins, etc., and the driving power is switched on and off via the electric control unit. An automatic faucet device characterized by controlled operation. (2) The self-memory solenoid valve is a self-memory solenoid valve that stores and maintains the state of the valve opening or closing operation caused by the electric signal applied from the electric control unit even when the electric signal disappears. The automatic faucet device according to claim 1, characterized in that it is a solenoid valve having a memory function. (3) The self-memory solenoid valve is provided outside the conduit with a plunger that moves forward and backward with respect to the opening/closing valve body and moves the valve body to an open or closed position, and the plunger moves to the advancing or retreating device. an electromagnetic coil that generates an electromagnetic force for the orbit;
and a permanent magnet that is fixed to a part of the magnetic path formed by the electromagnetic coil and has a magnetic attraction force that maintains the attracted state in the attracted position of the plunger. The automatic faucet device according to items 1 and 2. (4) The automatic faucet device according to any one of claims 1 to 3, wherein the detector is a hot wire type detector such as a thermistor robometer or a thermopile type infrared sensor. (5) The automatic faucet device according to any one of claims 1 to 4, wherein the driving power source is a non-commercial power source such as a dry battery.