KR950012160B1 - Gas boiler - Google Patents

Abstract

A battery(6) of electromotive force 3V is employed while a battery voltage necessary for driving a drive motor(21) for a water stop valve pivoting circuit(81), is set at 1.1V or more. Two sets of unity type 1.5V mangan dry cell are connected in series in the battery. A voltage level necessary for opening and closing a solenoid safety valve(41) by a solenoid safety valve circuit(83), operated by the combustion supervisory signal of a combustion detecting circuit(83), is set at 1.9V, higher than the minimum voltage level 1.1V of a water stop valve drive motor(21). The minimum necessary voltage of a sparker (821) is set at 1.3V. According to this constitution , the solenoid safety valve(41) is functioned normally at the voltage of 1.9V and becomes non-operative when the voltage is lower than 1.9V; however, the water stop valve(21) can be operated until the voltage of the water stop valve drive motor(21) becomes lower than 1.1V.

Description

Gas stove

1 is an external view of a gas cooker according to an embodiment of the present invention.

2 is a structural diagram of the gas cooker.

3 is an explanatory diagram for explaining respective voltage values.

4 is a block diagram of the gas cooker.

5 is an enlarged view of the main portion of the gas valve near the water stop valve.

* Explanation of symbols for main parts of the drawings

1: heat exchange water passage 2: water valve

3: gas burner 4: gas pipe

5: water flow switch 6: battery

7: operation switch 8: combustion controller

11: water pipe 12: heat exchanger

13: tapping hall 21: mo-ter

41: electronic safety valve (magnetic valve) A: gas bath

g: fuel gas

The present invention relates to a battery type gas dispenser employing a motor-driven water stop valve.

Conventionally, a water supply pipe, a heat exchanger, and a hot water supply pipe are spoken, and a heat exchange water passage in which a manual water discharge valve is provided in a water channel, a gas burner for heating the heat exchanger, and an solenoid valve in the pipeline are installed to supply fuel gas to the gas burner. BACKGROUND ART Gas heaters are known which have a gas pipeline for supplying water and a water flow switch for detecting water flowing in a heat exchange water passage.

In this gas water heater, water flows into the heat exchange water passage when the index valve is opened by manual operation, and when the water flow switch detects the flow of water, the solenoid valve changes, the igniter operates to ignite the gas. Hot water is discharged from the water pipe.

However, in the conventional gas stove, opening and closing of the still water valve, there is an unreasonable need to apply a lot of force to the operation knob connected to the still water valve (pressing, rotating, etc.), and to put pressure on the operation.

There, the inventors test-produced the gas-draining device which improved operability by changing a still water valve to a motor drive type, and using together the operation switch which a contact | connects conducts by light pressing operation.

However, if the electromotive force of the battery (end of life) decreases below the minimum operable voltage level of the motor (above the voltage level at which the solenoid valve can be changed and maintained) during the use of the gas cooker, It was found that there was an irrationality that the hot water was continuously discharged from the tapping tube because the rotor could not close the return valve.

It is an object of the present invention to adopt a motor-driven water stop valve that can reliably change the water stop valve and stop the discharge of hot water even when the electromotive force of the battery decreases while the gas dispenser is in use. An electronic gas cooker is provided.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention provides the heat exchange water path which made the water supply pipe, the heat exchanger, and the tapping water pipe, the water-exhaust valve installed in the heat exchange water path, and is opened and closed by a motor, and the gas which heats the heat exchanger. A burner, a gas pipeline for supplying fuel gas to the gas burner, a solenoid valve disposed in the gas pipeline and modified when energized, a battery for supplying operating power to the motor and the solenoid valve, An operation switch for instructing power supply to the motor, a water flow switch for detecting water flowing through the heat exchange water passage, and an electric power supplied from the battery to the solenoid valve when the water flow switch detects the water flow. In addition, in the gas water heater having a combustion controller for instructing combustion in the gas pipeline, the minimum voltage level of the battery operable the motor, The solenoid valve was made lower than the lowest voltage level of the said battery which can be maintained open.

(Operation when using; battery voltage normal)

When the operation switch is operated, the motor is energized, and the motor changes the index valve. Water flows in the heat exchange channel, and the water flow switch detects the water flowing in the heat exchange channel. The combustion controller instructs the gas burner to burn, along with energizing the solenoid valve when water flow is detected. The gas burner starts combustion to heat the heat exchanger. Water passing through the heat exchanger is exchanged with hot water and discharged from the tapping pipe.

(Operation during shutdown; battery voltage normal)

When operating the operation switch, the motor is energized, and the motor closes the water stop valve. The hot water is discharged from the tapping pipe, and the water flow switch does not detect the water flowing through the heat exchange water passage. The combustion controller stops the energization of the solenoid valve when no flow is detected, instructs the gas burner to stop the combustion, and the gas burner stops the combustion.

(When in use, the voltage of the battery is able to operate the motor, but the voltage drops to a voltage level at which the solenoid valve cannot be kept open)

The solenoid valve is unable to maintain its open state and closes. The gas burner stops combustion, and cold water is discharged from the tapping pipe. The user understands that the battery is near the end of life. When the operation switch is operated, the motor is energized, and the motor closes the still water valve to stop the discharge of cold water.

While using the gas cooker, even if the electromotive force of the battery is lowered, it is safe because the combustion of the gas burner and the discharge of cold water can be reliably stopped.

An embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 2, the gas water heater A is connected to the heat exchange water passage 1 and the motor 21 formed by extending the water supply pipe 11, the heat exchanger 12, and the hot water supply pipe 13 to each other. The water valve (2) opened and closed by the opening, the gas burner (3) for heating the heat exchanger (12), the gas pipe (4) for supplying the fuel gas (g) to the gas burner (3), and the heat exchange water passage ( 1) The water flow switch 5 in which the contact is closed when water flows in, the electronic safety valve 41 disposed in the gas pipeline 4, the battery 6, the operation switch 7 and the electronic safety valve 41 And a combustion controller 8 which is responsible for energizing the gas and burning the gas burner 3.

The water supply pipe 11 arranges the water discharge valve 2 at the most upstream, arranges the water burner valve 14 which also acts as a hydraulic pressure-reducing member downstream thereof, and provides a water supply control valve downstream of the water burner valve 14. 112) is excreted.

The tapping pipe | tube 13 is comprised by covering a resin pipe with the metal flexible pipe, and attaching the shower head 131 to the front-end | tip. The shower head 131 is provided with a water flow diverter 132 so that a shower or a straight stream of water 133 can be selected.

As shown in FIG. 5, the pilot valve 23 operates and opens when the spindle 22 is pressed as shown in FIG.

The motor 21 has cutout portions 241 and 242 formed therein, and has a thin portion 243 (cutout portion 242 side) and a thick portion 244 (cutout portion 241 side), The cam 24, which has a circular cross section, in which the thick portion 244 presses the spindle 22, is fixed to the drive shaft. In addition, reference numeral 25 denotes a position switch, and the electrical contact is opened when the spring-shaped movable piece 251 is tightly fitted to the cutouts 241 and 242 by the rotation of the motor 21. .

The gas pipeline 4 is provided with an electromagnetic safety valve 41, a hydraulic pressure actuating valve 42 connected to the water burner valve 14, a gas burner valve 43 and a gas amount regulating valve 44 from the upstream side. . In addition, the gas amount regulating valve 44 is connected to the hot water setting lever L together with the water quantity adjusting valve 112, and the gas amount and quantity corresponding to the slide amount of the hot water setting lever L are the gas burner 3 and the heat exchanger. It is supplied to the machine 12, respectively. When the hot water temperature setting lever L is at the left end, the cold / hot water switching switch S is opened, and the gas burner 3 is not ignited, and cold water is discharged from the shower head 131.

The water flow switch 5 is connected to the water burner valve 14 and the hydraulic pressure actuating valve 42. When the water burner valve 14 detects the flow of water in the heat exchange water passage 1, the electrical contact becomes conductive.

In the present embodiment, the battery 6 is a series of two single 1.5V manganese dry batteries connected in series, and normally generates 3V of electromotive force (see FIG. 3).

The operation switch 7 is an upper push button switch in which a contact is conducted by light pressing operation.

The combustion controller 8 includes an index valve driving circuit 81, an ignition control circuit 82, a combustion detection circuit 83, and an electronic safety valve driving circuit 84.

The still water valve driving circuit 81 receives electric signals transmitted from the resistance side terminals of the operation switch 7 and the position switch 25, and energizes the motor 21 based on these electric signals. In order to drive the motor 21, a battery voltage of 1.1 V or more is required.

Specifically, when a light pressing operation is performed to the operation switch 7 and the contact of the operation switch 7 is closed, a Hi signal is input to the input terminal 81a of the still water valve driving circuit 81, and the motor 21 drives. When the cam 24 rotates as the motor 21 is driven, and the cutout 241 of the cam 24 releases the pressing of the movable piece 251 of the position switch 25, the position switch 25 ), The Lo signal is input to the input terminal 81b of the still water valve driving circuit 81, and the motor 21 stops.

In this state, the spindle 22 is pressed by the cam 24, the water discharge valve 2 is opened, and the cold water is discharged from the shower head 131. When the water flow is detected by the water flow switch 5, the electromagnetic safety valve 41 is changed, the sparker 21 is operated for a predetermined time, combustion is started, and hot water is performed.

In addition, when a light pressing operation is performed to the operation switch 7 during hot water supply and the contact of the operation switch 7 is closed, the Hi signal is input to the input terminal 81a of the still-water valve driving circuit 81, and the motor 21 is driven again. When the cam 24 rotates according to the driving of the motor 21, and the notch 242 of the cam 24 releases the pressing of the movable piece 251 of the position switch 25, the position switch 25. Is opened, the Lo signal is inputted to the input terminal 81b of the still water valve driving circuit 81, and the motor 21 is stopped.

In this state, the spindle 22 is depressurized, the water shutoff valve 2 is closed, the water flow stops, the contact of the water flow switch 5 is opened, and the electromagnetic safety valve 41 is closed.

The ignition control circuit 82 operates when both the water flow switch 5 and the cold / hot water switch S are closed, and energizes the sparker 821 for a predetermined time (however, the sparker 821 is operated). Is a circuit for igniting the gas burner 3 with a minimum battery voltage of 1.3 V). In addition, when the electromotive force of the battery 6 is 2.1V during the predetermined time, the LED (not shown) is turned on to indicate that the electromotive force of the battery 6 is in the normal range.

The combustion detection circuit 83 monitors the combustion of the gas burner 3 by the thermocouple 831 and the flame rod 832, and sends a safety signal to the electronic safety valve driving circuit 84 while the normal combustion is maintained. It is a circuit to send out.

The electromagnetic safety valve driving circuit 84 is a circuit for opening and holding the electromagnetic safety valve 41 while the safety signal is held. However, the opening and closing operation are set in such a manner that a voltage level (for example, 1.9 V) higher than the lowest voltage level (1.1 V) capable of driving the motor 21 is required.

Next, operation in each case where the battery 6 is shortly before the life due to long term use will be described.

When the operation switch 7 is pressed, the LED is not turned on. However, until the electromotive force is 1.9V, the gas cooker A functions normally.

When the operation switch 7 is pressed in the stopped state, if the electromotive force is 1.3 V or more and less than 1.9 V, the electronic safety valve 41 is not changed even when the sparker 821 is operated, and the gas burner 3 is ignited. The cold water can be discharged and stopped without causing it to fail. If the electromotive force is 1.1V or more and less than 1.3V, the sparker 821 also does not operate. In addition, when it becomes less than 1.1V, exposure and stop of cold water are also impossible.

When the electromotive force becomes 1.1 V or more and less than 1.9 V in the operating state (during discharging of hot water), even if the safety signal is maintained, the opening and closing of the electromagnetic safety valve 41 cannot be maintained, and the gas burner 3 burns. It stops and the hot water discharged from the shower head 131 turns into cold water. In this state, if the operation switch 7 is pressed before the electromotive force becomes less than 1.1 V, the still water valve 2 is closed by the motor 21 to stop the discharge of cold water.

Hereinafter, the advantage of the gas stove A of this embodiment is demonstrated.

(1) When the electromotive force decreases in the operating state (during discharging of hot water) of the gas cooker A, the opening and closing of the solenoid safety valve 41 cannot be performed first, and the gas burner 3 burns. It is safe to stop. In this state, when the operation switch 7 is pushed (but before the electromotive force becomes less than 1.1 V), the discharge of the cold water can be stopped.

(2) Pressing the operation switch 7 lightly, the gas canister A can be used or stopped, and the operability is excellent.

(3) Since the LED lights only during the operation of the sparker 821, the LED is not burdened.

Claims (1)

A heat exchange water passage formed by extending the water supply pipe, the heat exchanger, and the hot water supply pipe, a water discharge valve disposed in the heat exchange water passage and opened and closed by a motor, a gas burner for heating the heat exchanger, and a gas burner A gas pipeline to be supplied, a solenoid valve disposed in the gas pipeline and being energized, a battery for supplying electric power to the motor and the solenoid valve, and an operation switch for instructing energization to the motor And a water flow switch for detecting water flowing through the heat exchange water passage, and receiving electric power from the battery, when the water flow switch detects the water flow, energizing the solenoid valve and instructing the gas burner to burn. In the gas water purifier provided with a combustion controller, The said solenoid valve can maintain and change the lowest voltage level of the said battery in which the said motor can operate. A gas cooker characterized in that lower than the lowest voltage level of the former.