KR950009262B1 - Hot water boiler - Google Patents

Abstract

a gas burner(3) heating the water flowing in a pipe line(2); a check valve(24) opening or closing the pipe line in response to turning on or off of an electric power switch; a first controller(6) controlling the gas burner(3); a second controller(7) controlling the check valve(24) in response to output of an infrared ray sensor(71); a power supply circuit(8) supplying the electric power to the first controller(6); a switching circuit(9) turning on or off the infrared ray sensor(71) in respose to its output to be connected in series between the power supply circuit(8) and the first controller(6). The electric power of the first controller is prevented from consumption under the stand by state of the hot water feeder.

Description

Hot water device

1 is a block diagram showing a control device of an instant hot water dispenser used in the first embodiment of the present invention.

2 is a schematic diagram showing the instantaneous hot water dispenser used in the first embodiment of the present invention.

3 is a block diagram showing the main part of the control device of the instantaneous hot water dispenser used in the first embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: instant hot water dispenser (hot water supply device) 2: hot water supply pipe

3: gas burner (heat source) 6: combustion control unit (first control means)

7: Index valve control unit (second control means) 8: Power supply circuit

9: switching circuit 10: switching switch

24: index valve 71: infrared sensor (detection means)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply device such as an instant hot water dispenser operated by a power source such as a battery.

Conventionally, for example, in a gas circulation hot water dispenser, for example, an infrared sensor is attached to any part of the main body or the tapping pipe, and when the back of the user's hand is detected by the infrared sensor, the electrons disposed in the tapping pipe line are detected. It is known to open a still-water valve and to detect water flowing in a hot water supply line with a water flow switch, and then to operate the heat source to heat the water flowing in the hot water supply line to discharge the hot water from the hot water supply line (prior art).

In addition, in such a gas instantaneous hot water dispenser, a power switch is generally disposed and a safety valve driving circuit for controlling a safety valve in a gas pipeline, an ignition circuit for controlling a sparker, and a combustion detection circuit are provided by closing the contact of the power switch. The power supply was always supplied to a combustion control unit consisting of a lamp, a sensor circuit including an infrared sensor, and an index valve control circuit for controlling an index valve, and the apparatus was in standby state until a user was detected by the infrared sensor.

By the way, in the prior art, the power is supplied to the combustion control unit even during the standby mode until the user is detected by the infrared sensor, and the power is consumed by the combustion detection circuit or the like. Thus, for example, a battery is used as the power source. In this case, there has been a problem that battery consumption becomes severe.

An object of the present invention is to provide a hot water supply device that prevents power consumption of the first control means in a standby state for use.

In order to achieve the above object, the present invention provides a hot water supply pipe passage through which water flows inside, a heat source for heating the water flowing in the hot water supply pipe passage, an open water supply pipe passage when the valve is opened, and a water shutoff valve that closes the hot water supply passage when the valve is closed; A first control means for controlling the heat source when the electric power is supplied, a detecting means for detecting the presence or absence of the object to be detected, second control means for controlling the still water valve in accordance with the output of the detecting means, and electric power to the first control means. A technical means having a power supply circuit for supplying a power supply circuit and a switching circuit for connecting and disconnecting the first control means and the power supply circuit in series between the first control means and the power supply circuit in accordance with the output of the detection means. Adopted.

In addition, the present invention employs technical means which connects a switching switch for switching between hot water and water in series with the switching circuit.

Therefore, in the present invention, when the detected object is not detected by the detecting means, the connection between the first control means for controlling the heat source and the power supply circuit is cut off by the switching circuit. For this reason, electric power is not supplied to a 1st control means.

When the switching switch is switched to the water mode side where the heat source is unnecessary, the connection between the first control means for controlling the heat source and the power supply circuit is interrupted. Therefore, according to the present invention, it is possible to prevent waste of power.

The hot water supply apparatus of this invention is demonstrated based on the Example shown to FIG. 1 thru | or FIG. 1 and 2 show a first embodiment of the present invention. 1 is a view showing the control device of the instantaneous hot water dispenser employing the present invention, Figure 2 is a view showing the instantaneous water dispenser of the present invention.

Instantaneous hot water dispenser (1) is a hot water supply device of the present invention, the hot water supply pipe passage for discharging the hot water or water, the gas pipeline (4) for supplying fuel gas to the sparker (3), and the gas combustion type water heater The control apparatus 5 of (1) is provided.

The hot water supply pipe passage 2 is composed of a water supply pipe 21, a heat absorbing pipe 22, and a hot water supply pipe 23. The water supply pipe 21 is provided with a still water valve 24, a water governor valve 25, and a water quantity regulating valve 26. The still water valve 24 is opened when energized (on) and closed when energized is stopped (off). The water governor valve 25 keeps the quantity constant. The quantity adjusting valve 26 controls the opening degree of the water supply pipe 21 by rotating the hot water adjusting button (not shown) to change the quantity.

The heat absorbing tube 22 is disposed above the gas burner 3, and heats the water by heat-exchanging combustion heat generated in the gas burner 3 with water flowing therein. The tapping pipe 23 is formed of a flexible pipe and discharges hot water or water from the discharge port. The shower head 27 is coupled to the outer circumference of the discharge port of the tapping tube 23. By switching the switching switch (not shown in FIG. 3), the shower head 27 switches the discharge flows discharged from the discharge port of the tapping tube 23 into the discharge flow in the shower state and the discharge flow in the straight state.

The gas pipeline 4 includes an electronic safety valve 41, a hydraulic pressure regulating valve 42, a gas governor valve 43, and a gas amount regulating valve 44. When the safety valve 41 is on, the valve is opened, and when the safety valve 41 is off, the valve is closed. The hydraulic pressure regulating valve 42 is formed integrally with the water governor valve 25 so that the valve opens in conjunction with the water flow. The gas governor valve 43 keeps the gas pressure at the secondary side constant. The gas amount adjusting valve 44 is connected to the temperature adjusting button, and the gas amount is changed by controlling the opening degree of the gas pipe 4 by the rotation of the temperature adjusting button.

The control apparatus 5 is equipped with the combustion control unit 6, the still water valve control unit 7, the power supply circuit 8, the switching circuit 9, the switching switch 10, and the water flow switch 11. As shown in FIG. The combustion control unit 6 incorporates a safety valve drive circuit 61, an ignition control circuit 62, and a combustion state detection circuit 63 as first control means of the present invention.

The safety drive circuit 61 controls on and off of the safety valve 41. The ignition control circuit 62 controls the on and off of the sparker 65. The sparker 65 ignites a mixed gas of fuel gas flowing out of the gas burner 3 and combustion air.

The combustion state detection circuit 63 has a frame rod 66 and a thermocouple 67, and controls the safety drive circuit 61 in accordance with the output of the frame rod 66 and the thermocouple 67. The frame rod 66 detects the presence or absence of a combustion flame of the gas burner 3. The thermocouple 67 detects whether or not a fire burns out, or abnormal combustion such as oxygen deficiency occurs.

The exponential control unit 7 is a second control means of the present invention, and is adapted to the output holding circuit 72 for holding the output of the infrared sensor 71 which is a reflective photoelectric switch and the output of the output holding circuit 72. An index valve driving circuit 73 for controlling the index valve 24 is incorporated.

The infrared sensor 71 is a detection means of the present invention, and includes a light emitting element 74 such as a photodiode that emits infrared rays, and a light receiving element 75 such as a photo transistor that detects infrared rays reflected from a target object such as a user's hand. It consists of).

When the light receiving element 75 detects infrared rays, the output holding circuit 72 outputs a high level (hereinafter referred to as H level). When the light receiving element 75 detects infrared rays again, the output is low level (hereinafter, L level).

The still water valve driving circuit 73 turns on the still water valve 24 to open the valve when the input is at the H level, and closes the valve by turning off the still water valve 24 when the input is at the L level.

The power supply circuit 8 is made of, for example, a battery, and supplies power to the combustion control unit 6, the still water valve control unit 7, and the infrared sensor 71.

The switching circuit 9 is composed of one transistor and is connected in series between the combustion control unit 6 and the power supply circuit 8. This switching circuit 9 is turned on when the input is at the H level and turned off when the input is at the L level.

The switching switch 10 is a switch for switching the hot water and the water mode, and is connected in series between the combustion control unit 6 and the switching circuit 9. The changeover switch 10 is turned on (contact closed) when the tap-mode is selected by the user, and turned off (contact opened) when the male mode is selected.

The water flow switch 11 is connected in series between the combustion control unit 6 and the switching switch 10. This water flow switch 11 is a switch in which the hydraulic pressure actuating valve 42 detects water flow and is interlocked when the valve is opened, and is turned off when the valve is closed.

The operation of the instantaneous scrubber 1 used in this embodiment will be described based on FIG. 1 and FIG. When the user's hand is close to the infrared sensor 71, the infrared light emitted from the light emitting element 74 of the infrared sensor 71 is reflected from the user's hand and is received by the light receiving element 75.

Therefore, the output of the output holding circuit 72 of the still water valve control unit 7 becomes H level, the switching circuit 9 is turned on, and the still water valve 24 is turned on by the still water valve driving circuit 73. The valve opens. When the still water valve 24 is opened, water flow is generated in the hot water supply line 2, the hydraulic pressure pressure valve 42 is opened, and the water flow switch 11 is closed. At this time, when the user switches the changeover switch 10 to the tangwood side, the changeover switch 10 is closed. Therefore, electric power is supplied from the power supply circuit 8 to the safety valve drive circuit and the ignition control circuit 62 of the combustion control unit 6. Therefore, the safety valve 41 is turned on by the safety valve driving circuit 61 to supply fuel gas to the gas burner 3, and the gas burner 3 is turned on by the ignition control circuit 62. By ignition, hot water is discharged from the shower head 27 of the tapping pipe 23.

In the hot water supply, the flame rod 66 and the thermocouple 67 of the combustion state detection circuit 63 detect the presence or absence of combustion flame and abnormal combustion, and when the combustion flame is not detected or abnormal combustion is detected. Is detected, the safety valve 41 is turned off to shut off the gas pipe 4.

As described above, when the user's hand is not detected by the infrared sensor 71 and the gas burner 3 is in standby mode, or when the male mode is selected, combustion control is performed. No power is supplied to the unit 6 from the power supply circuit 8. Therefore, unnecessary use of electric power can be prevented, and battery consumption can be reduced.

3 is a view showing the main part of the control device of the instant hot water dispenser as a second embodiment of the present invention. In this embodiment, the switching circuit 12, the smoothing capacitor 13, and the discharge circuit 14 are provided. The switching circuit 12 is composed of, for example, two transistors and four resistors. The smoothing capacitor 13 stably supplies power to the combustion control unit 6 when the switching circuit 12 is turned on. The discharge circuit 14 is composed of, for example, an output circuit for outputting a discharge signal, a transistor, and three resistors.

When the user's hand approaches the infrared sensor 71 in front of the hot water supply, the output of the output holding circuit becomes L level, so that the switching circuit 12 is turned off. At this time, charge charges remain in the smoothing capacitor (not shown), and there is a possibility of malfunction when re-ignition operation is performed. In order to prevent this, the discharge circuit 14 discharges the charge of the smoothing capacitor 13.

[Modification]

In the present embodiment, the gas burner 3 is used as the heat source, but a burner for burning liquid fuel may be used as the heat source, or an electric heater made of a PTC heater or a metal resistor may be used.

As the detection means, in addition to the present embodiment, a non-contact sensor such as a transmission photoelectric switch, a proximity switch or an ultrasonic sensor, a contact sensor such as a micro switch, a limit switch, a touch switch or a push button switch may be used. Moreover, you may use the optical fiber type photoelectric switch which combined the photoelectric switch and the optical fiber.

Claims (2)

(a) a hot water supply pipe passage through which water flows inside, (b) a heat source for heating the water flowing in the hot water supply pipe passage, (c) a hot water supply passage opening the valve when the valve is opened, and closing the hot water supply passage when the valve is closed; (d) a first control means for controlling the heat source when power is supplied, and (e) a second control means for controlling the still water valve according to the output of the detection means, the second control means for detecting the presence or absence of the object to be detected. Means; (f) a power supply circuit for supplying power to said first control means, and (g) said first control means connected in series between said first control means and a power supply circuit in accordance with an output of said detection means. And a switching circuit for connecting and disconnecting the power supply circuit. The hot water supply apparatus according to claim 1, wherein a switching switch for switching hot water and water is connected in series with the switching circuit.