JPH05118063A - Automatic water tap - Google Patents

Abstract

PURPOSE:To prevent erroneous operation of a sensing means and to make a water delivery device operable by a single operation for water delivery at the starting by a method wherein a water delivery controller makes the water delivery device deliver the water, with a power source switch turned from off to on, regardless of execution of sensing the existence of a user. CONSTITUTION:With a power source switch 8 turned on, output from an output inversion holding circuit 94 is held unconditionally at high level, and thereby a transistor switch 95 is made conductive, making a controller start water delivery operation and water is delivered from a shower head. As a hand is stretched out near the shower head, infrared beam from an LED is received with a phototransistor, and pulse signals 921 are inputted into a pulse count circuit 93, and thereby high level signals are outputted from the pulse count circuit 93. Then, the high level signals are inputted into the output inversion holding circuit 94, and output therefrom is returned to and is held at low level, making the transistor switch 95 nonconductive, and thereby the controller operates for stopping of water and water is stopped therewith.

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 for discharging water or hot water.

[0002]

2. Description of the Related Art Conventionally, a water outlet that discharges water from a water outlet, a hand detection sensor disposed at the water outlet, and a hand detection sensor detects whether or not the user's hand has come out. There is known an automatic faucet device including a water discharge control means for performing water discharge and a power switch for supplying electric power for operation to the water discharge control means.
The power switch is provided to prevent malfunction of the hand detection sensor due to cats, cockroaches, flies, etc., which may occur when the automatic faucet device is not used.

[0003]

However, in the above-mentioned conventional automatic faucet device, when the automatic faucet device is used, it is necessary to turn on the power switch to cause the hand detection sensor to detect the hand. Has to do two actions, which is cumbersome. An object of the present invention is to provide an automatic faucet device which can cope with malfunction of the detecting means and at the time of starting use, the water spouting tool discharges water in one operation.

[0004]

[Means for Solving the Problems] In order to solve the above problems,
The present invention provides a water spouting tool for spouting water or hot water from a water spout, a detection means for detecting a user, and a water spouting control means for spouting / stopping the water spouting tool based on user detection by the detection means. And a power switch for selecting an "off" position for disabling the water outflow of the water outflow device by the water outflow control means and a "on" position for enabling the water outflow / stoppage of the water outflow device, When the switch is turned from the "OFF" position to the "ON" position, the water discharge control means adopts a configuration in which the water discharge tool water is discharged regardless of the presence or absence of user detection by the detection means.

[0005]

When the power switch is switched from the "off" position to the "on" position, the water discharge control means discharges water or hot water from the water discharge tool regardless of whether or not the detection means detects the user. Let the detection means detect the user or turn off the power switch
Set to the position and stop the water and hot water from the water outlet.

[0006]

[Effect of the Invention] At the start of use, water or hot water can be discharged from the water discharge tool by one operation of setting the power switch to the "ON" position. If you do not need water from the water outlet,
If the power switch is set to the "OFF" position, malfunction of the detection means can be prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. As shown in the figure, the gas instantaneous water heater A includes a hot water supply pipe 1 in which a water supply pipe 11, a heat exchanger 12, and a hot water discharge pipe 13 are connected in series, an electromagnetic water stop valve 2 provided in the water supply pipe 11, A water governor valve 111 that also functions as a water pressure responsive member, a water amount control valve 112, a gas burner 3 that heats the heat exchanger 12, a sparker 31, a frame rod 32, a thermocouple 33 that are arranged in appropriate places on the gas burner 3, and a gas burner. A gas pipeline 4 for supplying gas g to No. 3, an electromagnetic safety valve 41, a water pressure responsive valve 42, a gas governor valve 43, and a gas amount control valve 44, which are provided in the gas pipeline 4, and are arranged in the shower head 14. The LED 5 and the phototransistor 6, the battery 7, the power switch 8, and the controller 9 are provided.

The hot water discharge pipe 13 is made of a metal flexible pipe covered with a resin pipe, and a shower head 14 is fitted to the tip thereof. The shower head 14 is equipped with a water flow switch (not shown) so that a shower or a straight water flow can be selected.

The electromagnetic shutoff valve 2 and the electromagnetic safety valve 41 are electromagnetic valves that open when energized. The water governor valve 111 is a valve that keeps the amount of water constant, and closes the water flow switch 113 when the water flow is detected and displaced. The gas amount control valve 44 and the water amount control valve 112 are connected to the temperature control knob 40 that performs hot water switching and hot water temperature control, and is manually controlled. The water pressure responsive valve 42 is the water governor valve 111.
And the water governor valve 111 detects the water flow and is displaced when it is displaced. The gas governor valve 43 is a valve that keeps the gas pressure on the secondary side constant.

The sparker 31 is an element that discharges and ignites the gas burner 3. The frame rod 32 is an element that detects the combustion flame of the gas burner 3. The thermocouple 33 is an element that detects abnormal combustion such as oxygen deficiency and the disappearance of the gas burner 3.

The LED 5 is set at 62.5 mS so that the gas instantaneous water heater A does not malfunction due to continuous light such as lighting equipment or sunlight.
Infrared light 51 having a pulse width of 60 μS is emitted at a pulse cycle of. The phototransistor 6 can receive only the infrared light 51 synchronized with the light emission cycle of the LED 5,
When the hand 61 of the user is within a few centimeters of the shower head 14, the infrared light 51 emitted from the LED 5 and reflected by the hand 61 is received. Therefore, the infrared light 51 is not received by the phototransistor 6 even when the hand 61 is at the power switch 8, the temperature control knob 40, or the position for washing.

The battery 7 is formed by connecting two single batteries in series. The power switch 8 is disposed in the main body housing 10, and when pushed in to the on position, the electrical contacts are closed to supply the controller 7 with the power of the battery 7.

As shown in FIG. 3, the controller 9 includes a clock circuit 90, a light emitting circuit 91, a light receiving circuit 92, a pulse counting circuit 93, an output inversion holding circuit 94, a transistor switch 95, a water shutoff valve driving circuit 96, and Combustion control circuit 97
Have. The clock circuit 90 generates a clock pulse having a period of 62.5 mS and a pulse on time of 60 μS, and sends it to the light emitting circuit 91. The light emitting circuit 91 is composed of a drive transistor or the like, and energizes the LED 5 based on the clock pulse. The light receiving circuit 92 includes a resistor for energizing the phototransistor 6, an amplifier for amplifying the output of the phototransistor 6, a level matching resistor, and a capacitor, and a pulse signal 92 corresponding to the reception of the infrared light 51.
Send 1. The pulse count circuit 93 is 250 mS
During this period, when three pulse signals 921 are received, a high level signal is output. The output inversion holding circuit 94 unconditionally holds the output at the high level when the power is turned on, and returns the output to the low level and holds it when the high level signal is input in the high level state. When a high level signal is input in the low level state, the output is held at the high level.
The transistor switch 95 conducts when the input is at a high level (hot water discharging operation) and does not conduct when the input is at a low level (hot water discharging operation). The water shutoff valve drive circuit 96 includes a motor (not shown) for operating the opening / closing of the electromagnetic water shutoff valve 2 and a motor driving transistor. When the transistor switch 95 is turned on, the motor is energized to turn on the electromagnetic water shutoff valve 2. Open the valve. In the combustion control circuit 97, the temperature control knob 40 is in the "hot water" position, the contact of the hot and cold water switch 900 is closed, the input is at high level, the transistor switch 95 is in the conductive state, and the electromagnetic shutoff valve 2 When water flows by opening the valve and the contact of the water flow switch 113 is closed, the electromagnetic safety valve 41 is opened to supply the gas g to the gas burner 3 and the sparker 31 is energized to be discharged to ignite the gas burner 3. ..
During the combustion of the gas burner 3, the combustion control circuit 97 detects the presence of combustion flame and the presence or absence of abnormal combustion by the flame rod 32 and the thermocouple 33. When the gas burner 3 is extinguished or abnormal combustion is detected, the electromagnetic safety valve is detected. 41 is closed.

Next, the operation of the gas instantaneous water heater A (main part)
Will be described together with the flowchart shown in FIG. When the power switch 8 is turned to the on position (step 901), the output of the output inversion holding circuit 94 is unconditionally held at a high level (step 902), the transistor switch 95 is turned on (step 903), and the controller 9 is a hot water (water) operation (step 904), and the shower head 14
Hot water comes out of the room. After that, when the hand 61 is extended near the shower head 14, the infrared light 51 from the LED 5 is received by the phototransistor 6 and the pulse counting circuit 9
Three pulse signals 921 are input to 3 (between 250 mS)
Then, the pulse counting circuit 93 outputs a high level signal (step 905). Output inversion holding circuit 94
When the high level signal is input in the high level state, returns the output to the low level and holds it (step 90
6) The transistor switch 95 becomes non-conductive (step 907), the controller 9 performs a hot water (water) operation (step 908), and the hot water (water) is stopped. After that, when the hand 61 is extended again near the shower head 14, the LED
Infrared light 51 from 5 is received by the phototransistor 6,
When three pulse signals 921 are input to the pulse counting circuit 93 (for 250 mS), the pulse counting circuit 9
3 outputs a high level signal (step 909), and the output inversion holding circuit 94 receives the high level signal in the low level state and holds the output at the high level (step 902).

The advantages of the gas instantaneous water heater A of this embodiment will be described below. (A) When the power switch 8 is turned from the off position to the on position, the controller 9 performs hot water (water) operation regardless of whether the hand is detected or not, and the hand 6 is placed near the shower head 14.
To stop the water (water), put out 1 or turn the power switch 8 to the off position. Therefore, at the start of use, the hot water (water) can be discharged from the shower head 14 by one operation of changing the power switch 8 from the off position to the on position, which is convenient and convenient. (B) If the power switch 8 is turned off when going out, the cockroaches 52 and the like will not be displayed when the shower head 1 is out.
Even if you crawl around 4, no hot water will come out. (C) Since the power switch 8 is in the off position and no circuits are backed up, the battery 7 is not wasted.

The present invention includes the following embodiments in addition to the above embodiments. a. The user's detection is performed using other mechanical sensors such as an ultrasonic sensor that detects the reflection of ultrasonic waves, a high-frequency oscillation stop type proximity switch that detects impedance changes of the oscillation coil, and a switch that operates by sensing static electricity. Good (including contact). b. The mechanical quantity sensor may be arranged in a place other than the shower head 14, for example, in the main body housing 10 or the sink 15. c. The configuration of the present invention may be applied to an automatic faucet device of the type in which the water discharge control means causes the water discharge tool to discharge water while the detection means detects the user.

[Brief description of drawings]

FIG. 1 is a layout view of a gas instantaneous water heater according to an embodiment of the present invention.

FIG. 2 is a structural explanatory view of the gas instantaneous water heater.

FIG. 3 is a block diagram of a controller of the gas instantaneous water heater.

FIG. 4 is a flowchart explaining the operation of the controller.

[Explanation of symbols]

 A gas instantaneous water heater (automatic faucet device) 8 power switch 9 controller (detection means, water discharge control means) 13 hot water pipe (water discharge tool) 14 shower head (water outlet) 61 hand (user)

Claims (1)

[Claims] 1. A water spouting tool for spouting water or hot water from a water spout, a detection means for detecting a user, and a water spouting control for spouting / stopping the water spouting tool based on user detection by the detection means. Means, and a power switch for selecting an "off" position for disabling the water outlet of the water outlet by the water outlet control means and an "on" position for enabling the water outlet / water stop of the water outlet. When the power switch is turned from the "OFF" position to the "ON" position,
The water discharge control means is an automatic faucet device that discharges water from the water discharge tool regardless of whether or not a user is detected by the detection means.