JP2003065535A - Small-sized water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience by easily checking remaining time in a continuous combustion timer by a user, and setting arbitrary continuous combustion time. SOLUTION: There are provided a gas solenoid valve 4 for controlling the supply of gas, a water solenoid valve 5 for controlling the supply of water, an igniter 6 for igniting gas, a burner thermocouple 8 for monitoring a flame of a burner 7 for combusting gas, a heat exchange thermocouple 9 for monitoring the temperature of a heat exchanger 13 for changing water to hot water, an operation switch 2 for inputting operation conditions, a control device 1, and a dry cell 12 of a power supply. The control device 1 comprises thermocouple read means 10, 11 for the burner thermocouple 8, the heat exchange thermocouple 9 and timer display means 14 constructed with an LED.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for a small water heater.

[0002]

2. Description of the Related Art FIG. 4 is a conceptual diagram of control of a conventional small-sized water heater. In FIG. 4, when the microcomputer 3 of the control device 1 recognizes that the operation switch 2 is turned on, the gas solenoid valve 4
, The water solenoid valve 5 and the igniter 6 are operated to burn the burner 7, and while the burner 7 is burning, the values of the burner thermocouple 8 and the heat exchange thermocouple 9 are constantly passed through separate thermocouple reading means 10 and 11. The microcomputer 3 reads the thermocouple value and burns the burner for a predetermined continuous combustion timer stored in the microcomputer 3 of the control device 1 unless the read value of the thermocouple is abnormal.

[0003]

However, in the conventional structure as described above, the remaining time of the predetermined continuous combustion timer is not known, and in some cases, the predetermined continuous combustion timer is exceeded and the combustion is suddenly stopped. It is possible that you will be mistaken for a failure.

Further, when the remaining time of the continuous combustion timer is displayed on the display means composed of LEDs, it is considered that the life of the dry battery is shortened.

Further, if the continuous combustion timer is only a predetermined time, it is conceivable that resources such as gas and water will be wasted for a long time due to forgetting to turn it off.

If the arbitrary continuous combustion timer is only one time, it may be necessary to change the setting each time according to the purpose.

Therefore, the present invention is to solve such a conventional problem, and an object thereof is to allow the user to easily confirm the remaining time of the continuous combustion timer and to set an arbitrary continuous combustion timer by the user. .

[0008]

In order to achieve the above object, the present invention comprises a timer display means constituted by an LED for displaying the remaining time of a predetermined continuous combustion timer in a control device. is there.

According to the present invention, the timer display means can easily inform the user of the remaining time of the continuous combustion timer and prevent misunderstanding of the user.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention comprises a gas solenoid valve for controlling gas supply, a water solenoid valve for controlling water supply, and an igniter for igniting gas, A burner that burns gas, a heat exchanger that changes water into hot water,
A burner thermocouple that monitors the flame of the burner, a heat exchange thermocouple that monitors the temperature of the heat exchanger, an operation switch that inputs operating conditions, a hot water temperature control lever that adjusts the hot water temperature, a gas solenoid valve and water. It has a control device that controls the solenoid valve, burner thermocouple, heat exchange thermocouple, and operation switch, a gas solenoid valve, a water solenoid valve, a dry battery that serves as a power source for the control device, and a battery case that houses the dry battery. The apparatus is provided with a timer display means composed of an LED for displaying the remaining time of the predetermined continuous combustion timer, and has an effect that the user can easily confirm the remaining time of the continuous combustion timer.

According to a second aspect of the present invention, in the control device, an LCD is used instead of the timer display means composed of LEDs.
The timer display means having the above structure is provided, and the addition of the timer display means has an effect of reducing the reduction in the life of the dry battery.

According to a third aspect of the present invention, a gas solenoid valve for controlling gas supply, a water solenoid valve for controlling water supply,
An igniter that ignites gas, a burner that burns gas, a heat exchanger that changes water into hot water, a burner thermocouple that monitors the flame of the burner, and a heat exchange thermocouple that monitors the temperature of the heat exchanger. An operation switch for inputting operating conditions, a hot water temperature adjusting lever for adjusting the hot water temperature, a gas solenoid valve, a water solenoid valve, a burner thermocouple, a heat exchange thermocouple, and a control device for controlling the operation switch, and a gas A solenoid battery, a water solenoid valve, a dry battery serving as a power source for the control device, a battery case accommodating the dry battery, and a timer display means configured by an LED or the like for displaying the remaining time of a predetermined continuous combustion timer are provided on the control device. However, in the control device, apart from the predetermined continuous combustion timer, the control device is provided with an arbitrary timer setting means capable of setting an arbitrary continuous combustion timer within the predetermined continuous combustion timer, which improves usability for the user. , Erased By equal, an effect which can reduce waste of resources such as water and gas.

According to a fourth aspect of the invention, a gas solenoid valve for controlling the gas supply, a water solenoid valve for controlling the water supply,
An igniter that ignites gas, a burner that burns gas, a heat exchanger that changes water into hot water, a burner thermocouple that monitors the flame of the burner, and a heat exchange thermocouple that monitors the temperature of the heat exchanger. And an operation switch for inputting operating conditions, a hot water temperature adjusting lever for adjusting the hot water temperature, a gas solenoid valve, the water solenoid valve, a burner thermocouple, a heat exchange thermocouple, and a control device for controlling the operation switch. , A gas solenoid valve, a water solenoid valve, a dry battery serving as a power source for the control device, a battery case housing the dry battery, and a remaining time of a predetermined continuous combustion timer displayed on the control device, L
In addition to the predetermined continuous combustion timer in the control device, the control device has a plurality of arbitrary timer setting means capable of setting a plurality of arbitrary continuous combustion timers within the predetermined continuous combustion timer. With such a configuration, it is possible to save the trouble of changing the setting of the continuous combustion timer for each purpose and improve the usability for the user.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows claims 1 and 2.
It is a conceptual diagram of control of the small-sized water heater of Example 1 which concerns. In FIG. 1, a gas solenoid valve 4 that controls the supply of gas, a water solenoid valve 5 that controls the supply of water, an igniter 6 that ignites the gas, a burner 7 that burns the gas, and a flame of the burner 7. Burner thermocouple 8 for monitoring the temperature, heat exchange thermocouple 9 for monitoring the temperature of heat exchanger 13 for converting water into hot water, operation switch 2 for inputting operating conditions, gas solenoid valve 4 and water solenoid valve 5. And a burner thermocouple 8, a heat exchange thermocouple 9, and a control device 1 for controlling the operation switch 2, a gas solenoid valve 4, a water solenoid valve 5, a dry battery 12 as a power source of the control device 1, and a control device 1. , Burner thermocouple 8 and thermocouple thermocouple 9 thermocouple reading means 10, 11
And a timer display means 14 composed of an LED.

In this configuration, when the microcomputer 3 of the control device 1 recognizes that the operation switch 2 is turned on, for example, the gas solenoid valve 4, the water solenoid valve 5 and the igniter 6 are simultaneously operated to burn the burner 7. At the same time, the microcomputer 3 of the control device 1
The predetermined continuous combustion timer stored in 1 is operated, and the timer display means 14 displays the remaining time. By displaying the remaining time of the continuous combustion timer in this way, the user can easily be notified of the remaining time of the continuous combustion timer.

According to the second aspect of the present invention, the timer display means 13 formed of an LCD is provided in place of the timer display means 13 formed of an LED. By adding the timer display means 13, a dry battery is provided. It is possible to reduce the reduction of the life of the.

(Embodiment 2) FIG. 2 is a conceptual diagram of control of a small-sized water heater according to a second embodiment of the present invention. In FIG. 2, a gas solenoid valve 4 for controlling gas supply and water supply are provided. A water solenoid valve 5 for controlling, an igniter 6 for igniting gas, a burner 7 for burning gas, a burner thermocouple 8 for monitoring the flame of the burner 7, and a heat exchanger 13 for converting water into hot water. Control for controlling the heat exchange thermocouple 9 for monitoring the temperature, the operation switch 2 for inputting operating conditions, the gas solenoid valve 4, the water solenoid valve 5, the burner thermocouple 8, the heat exchange thermocouple 9, and the operation switch 2. Device 1
A gas solenoid valve 4, a water solenoid valve 5, a dry battery 12 as a power source for the control device 1, the control device 1, the burner thermocouple 8 and the thermocouple reading means 10 and 11 of the thermocouple thermocouple 9, and the LED. The timer display means 14 configured as above and the arbitrary timer setting means 15 capable of setting an arbitrary continuous combustion timer are provided.

In this configuration, for example, when the microcomputer 3 of the control device 1 recognizes that the operation switch 2 is turned on, the gas solenoid valve 4, the water solenoid valve 5 and the igniter 6 are operated, and the burner 7 is operated.
A predetermined continuous combustion timer stored in the microcomputer 3 of the control device 1 is operated in the same manner as when the fuel is burned, and the timer display means 14 displays the remaining time. In this state, when the microcomputer 3 of the control device 1 recognizes that the arbitrary continuous combustion timer is set by the arbitrary timer setting means 15, the remaining time of the arbitrary continuous combustion timer is displayed by the timer display means 14
The burner 7 is burned for the remaining time.

When the arbitrary continuous combustion timer exceeds the predetermined continuous combustion timer, the predetermined continuous combustion timer is prioritized for safety, and the combustion of the burner 7 is stopped after the predetermined continuous combustion timer has elapsed. Further, as the arbitrary continuous combustion timer, the initially set arbitrary continuous combustion timer is stored unless the setting is changed. By setting an arbitrary continuous combustion timer in this manner, the usability for the user is improved and the waste of resources such as water and gas due to forgetting to turn off the gas can be omitted.

(Embodiment 3) FIG. 3 is a conceptual diagram of control of a small-sized water heater according to Embodiment 3 of claim 4. In FIG. 3, a gas solenoid valve 4 for controlling gas supply and water supply are controlled. Water solenoid valve 5, an igniter 6 for igniting gas, a burner 7 for burning gas, a burner thermocouple 8 for monitoring the flame of the burner 7, and a temperature of a heat exchanger 13 for converting water into hot water. Exchange thermocouple 9 for monitoring the temperature and operation switch 2 for inputting operating conditions
A control device 1 for controlling the gas solenoid valve 4, the water solenoid valve 5, the burner thermocouple 8, the heat exchange thermocouple 9, and the operation switch 2.
A gas solenoid valve 4, a water solenoid valve 5, a dry battery 12 as a power source for the control device 1, the control device 1, the thermocouple reading means 10 and 11 of a burner thermocouple 8 and a heat exchange thermocouple 9, and an LED. The timer display means 14 is composed of the above, and a plurality of arbitrary timer setting means 15 capable of setting two arbitrary continuous combustion timers.

In this configuration, when the microcomputer 3 of the control device 1 recognizes that the operation switch 2 is turned on, the gas solenoid valve 4, the water solenoid valve 5 and the igniter 6 are operated, and the burner 7 is operated.
A predetermined continuous combustion timer stored in the microcomputer 3 of the control device 1 is operated in the same manner as when the fuel is burned, and the timer display means 14 displays the remaining time. In this state, when the microcomputer 3 of the control device 1 recognizes that the arbitrary continuous combustion timer is set by A of the plural arbitrary timer setting means 15, the remaining time of the arbitrary continuous combustion timer is displayed on the timer display means 14. Is displayed and burner 7 is burned for the remaining time.

Similarly, a plurality of arbitrary timer setting means 1
When the microcomputer 3 of the control device 1 recognizes that the arbitrary continuous combustion timer has been set by B of No. 5, the remaining time of the arbitrary continuous combustion timer is displayed on the timer display means 14, and only the remaining time is burner. Burn 7. Also, if any continuous combustion timer exceeds the predetermined continuous combustion timer, for safety, prioritize the predetermined continuous combustion timer,
The combustion of the burner 7 is stopped after the passage of a predetermined continuous combustion timer. Further, the two arbitrary continuous combustion timers store the two arbitrary continuous combustion timers initially set unless the setting is changed. Since two arbitrary continuous combustion timers can be set in this way, it is possible to save the trouble of changing the arbitrary continuous combustion timers according to the purpose, so that the usability for the user can be improved.

[0024]

As described above, according to the present invention, by displaying the remaining time of the continuous combustion timer, the user can easily be notified of the remaining time of continuous combustion, and the misunderstanding that the combustion suddenly stopped. Can be prevented.

Further, the LCD consumes less power than the LED, and the reduction of the battery life of the dry battery due to the addition of the timer display can be reduced.

Further, since it is possible to set an arbitrary continuous combustion timer, it is possible to improve the usability for the user, and it is possible to save the waste of resources such as water and gas due to forgetting to turn it off.

Further, since it is possible to set a plurality of arbitrary continuous combustion timers, it is possible to save the trouble of changing the arbitrary continuous combustion timers according to the purpose, so that the usability for the user can be improved.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of control of a small water heater showing a first embodiment of the present invention.

FIG. 2 is a conceptual diagram of control of a small water heater showing a second embodiment of the present invention.

FIG. 3 is a conceptual diagram of control of a small water heater showing a third embodiment of the present invention.

FIG. 4 is a conceptual diagram of control of a conventional small water heater.

[Explanation of symbols]

1 control device 2 operation switch 3 Microcomputer 4 gas solenoid valve 5 Water solenoid valve 6 igniter 7 burners 8 burner thermocouple 9 heat exchange thermocouple 10, 11 thermocouple reading means 13 heat exchanger 14 Timer display means 15 Arbitrary timer setting means

Claims (4)

[Claims] 1. A gas solenoid valve for controlling gas supply, a water solenoid valve for controlling water supply, an igniter for igniting gas, a burner for burning gas, and heat for changing water into hot water. An exchanger and a burner thermocouple for monitoring the burner flame,
A heat exchange thermocouple for monitoring the temperature of the heat exchanger, an operation switch for inputting operating conditions, a hot water temperature adjusting lever for adjusting the hot water temperature, the gas electromagnetic valve, the water electromagnetic valve, and the burner thermocouple. A control device for controlling the heat exchange thermocouple and the operation switch, a dry battery serving as a power source of the gas solenoid valve, the water solenoid valve, and the control device, a battery case housing the dry battery, and the control device. A small-sized water heater that displays a remaining time of a predetermined continuous combustion timer and includes a timer display unit configured of an LED. 2. The small water heater according to claim 1, further comprising a timer display unit formed of an LCD, instead of the timer display unit formed of an LED. 3. A gas solenoid valve for controlling gas supply, a water solenoid valve for controlling water supply, an igniter for igniting gas, a burner for burning gas, and heat for changing water into hot water. An exchanger and a burner thermocouple for monitoring the burner flame,
A heat exchange thermocouple for monitoring the temperature of the heat exchanger, an operation switch for inputting operating conditions, a hot water temperature adjusting lever for adjusting the hot water temperature, the gas solenoid valve, the water solenoid valve, and the burner thermocouple. A control device for controlling the heat exchange thermocouple and the operation switch, a dry battery serving as a power source for the gas solenoid valve, the water solenoid valve, and the control device, a battery case housing the dry battery, and the control device. A timer display means for displaying the remaining time of a predetermined continuous combustion timer, the timer display means comprising an LED or the like;
In addition to the predetermined continuous combustion timer in the control device,
A small water heater comprising an arbitrary timer setting means capable of setting an arbitrary continuous combustion timer within the predetermined continuous combustion timer. 4. A gas solenoid valve for controlling gas supply, a water solenoid valve for controlling water supply, an igniter for igniting gas, a burner for burning gas, and a heat for changing water into hot water. An exchanger and a burner thermocouple for monitoring the burner flame,
A heat exchange thermocouple for monitoring the temperature of the heat exchanger, an operation switch for inputting operating conditions, a hot water temperature adjusting lever for adjusting the hot water temperature, the gas electromagnetic valve, the water electromagnetic valve, and the burner thermocouple. A control device for controlling the heat exchange thermocouple and the operation switch, a dry battery serving as a power source for the gas solenoid valve, the water solenoid valve, and the control device, a battery case housing the dry battery, and the control device. A timer display means for displaying the remaining time of a predetermined continuous combustion timer, the timer display means comprising an LED or the like;
In addition to the predetermined continuous combustion timer in the control device,
A small water heater comprising a plurality of arbitrary timer setting means capable of setting a plurality of arbitrary continuous combustion timers within the predetermined continuous combustion timer.