JPH06288545A - Abrupt interruption treatment method for combustor - Google Patents

Abstract

PURPOSE:To prevent a combustor from being again abnormally operated upon voltage recovery even when any abrupt inteirruption occurs during safe operation by again displaying failure information stored in a remote controller upon the voltage recovery after the abrupt interruption and informing a reset body controller of the failure information. CONSTITUTION:Failure produced in a combustor 1 is detected by a sensor and is fed to a body controller 2. In step S11, safe operation where combustion operation is interrupted into a waiting state is instructed and the failure information is continuously fed to a remote controller 3 until the situation is stopped. The remote controller 3 displays the failure in step S12 and stores the state and kind in a memory of a microcomputer. When abrupt interruption is produced under the situation and the remote controller 3 is backed up with a power supply and further voltage recovery is performed during the operation of the microcomputer, the remote controller again displays the failure in step S14 and informs the body controller 2 of the failure information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustor, and more particularly, to a combustor instantaneous control of how to control the combustor when an instantaneous power failure / instantaneous voltage drop (hereinafter referred to as instantaneous power failure) occurs. Regarding suspension measures.

[0002]

2. Description of the Related Art Recently, in a combustor such as a water heater, due to the advancement of functions, a remote controller (hereinafter referred to as a remote controller) has come to set various data such as a bath water level, a clock, and a reserved time. , The setting is stored by the microcomputer installed in the remote controller. on the other hand,
Instantaneous blackouts are a phenomenon that can certainly occur in the market. When the power supply to the microcomputer is cut off due to a momentary power failure, the stored contents are lost and various settings must be made again. Therefore, settings have been memorized using a power backup or an EEPROM that can be retained without a power supply. This EEPROM method is reliable, but it is costly and has the disadvantage of requiring software processing. In addition, taking a long time to back up the power source has a space limitation and a cost limitation of the remote controller. From the above, power supply backup using a capacitor for about several seconds has become mainstream these days. However, since the main controller of the combustor consumes a lot of current and the backup cost is high,
Since it is possible to back up for only about 2 seconds, it is easy for only the microcomputer on the remote control side to be operating during an instantaneous power failure. For this reason, conventionally, even if the main body controller is reset due to an instantaneous power failure, if the microcomputer of the remote control is operating, the remote control side will again instruct the main body controller side to operate when the voltage returns. I had a system to

[0003]

However, when the system is configured as described above, there is no problem during normal operation, but the main body controller issues a safety operation command to stop the combustion operation of the combustor due to abnormality of the combustor. Under such a situation, there is a drawback that a problem occurs when an instantaneous blackout occurs. That is, referring to FIG. 4, when a certain abnormality occurs in the combustor during the operation of the combustor, the main controller of the combustor which has received the abnormality signal is in order to ensure safety. A safety operation for stopping combustion is commanded (S1).
Then, the main body controller continues to send the abnormal operation memory, which is a self-memorized safe operation, to the remote controller side. The remote controller receives this and displays an abnormality (S2).
When an instantaneous blackout occurs in such a situation, the microcomputer of the main body controller is reset due to the voltage drop. On the remote control side, the display is turned off due to the voltage drop (S3), but if the voltage is restored before reaching the reset, the abnormal signal is no longer sent from the main body controller, so this time the normal display is performed (S4). , The operation command is continuously sent to the main body controller side. Then, the main body controller in which the safe operation memory is reset starts the normal combustion operation in response to the operation operation command from the remote controller (S5). Therefore, a very problematic situation can occur in which combustion is performed even though the abnormality of the combustor is not eliminated.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, and in a combustor in which power is backed up to a microcomputer of a main body controller and a microcomputer of a remote controller, when a safe operation due to abnormality of the combustor is performed. The object of the present invention is to provide a combustor instantaneous power failure coping method that can prevent the combustor from starting abnormal operation again when the instantaneous power failure is restored even if the instantaneous power failure occurs. To do.

[0005]

In order to achieve the above object, the method of the present invention uses a power supply so that the microcomputer incorporated in the remote controller can operate for a longer time than the microcomputer incorporated in the main controller of the combustor during an instantaneous power failure. A method of coping with an instantaneous power failure in a combustor with a backup, wherein the main body controller notifies a remote controller of an abnormality of the combustor, and the remote controller
The abnormality information obtained from the main body controller is displayed and stored in the microcomputer, and when the voltage is restored after the momentary power failure, the abnormality information stored by itself is displayed again and the abnormality information is reset to the main body controller. The first feature is that the notification is made. Further, the method of the present invention is a method for coping with an instantaneous power failure in a combustor with a power supply backup so that the microcomputer incorporated in the remote controller can operate for a longer time than the microcomputer incorporated in the main body controller of the combustor during an instantaneous power failure. The main body controller informs the remote controller of the abnormality of the combustor, and the remote controller displays the abnormality information obtained from the main body controller and stores it in the microcomputer, and displays a normal state when the voltage is restored after the momentary power failure. At the same time, the second feature is that the operation is turned off based on the abnormality information stored by the driver.

[0006]

According to the first feature described above, when the combustor has a certain abnormality, the main body controller which has obtained the detection information of the abnormality instructs the combustor to perform a safe operation. Then, the main body controller transmits the abnormality to the remote controller as long as the abnormality information continues. The remote controller stores the received abnormality information and displays an abnormality. Under such a safe operation condition, if a momentary power failure occurs, and the voltage of the microcomputer of the main body controller resets due to a voltage drop and then returns to the voltage before the microcomputer of the remote controller resets, the remote controller retains the memory of the abnormality information. Therefore, the remote controller displays the abnormality based on the stored information and transmits the abnormality information to the main body controller. Upon receiving this abnormality information, the main body controller issues a safe operation command to the combustor again. As a result, the combustor is returned to the safe operating state, the restart of the operation is continuously prevented, and safety is ensured. According to the second feature described above,
When there is a certain abnormality in the combustor, the main body controller that has obtained the detection information thereof issues a safe operation command to the combustor.
Then, the main body controller transmits the abnormality to the remote controller as long as the abnormality information continues. The remote controller stores the received abnormality information and displays an abnormality. This point is similar to the operation according to the first feature. Under such a safe operation situation, if a momentary power failure occurs and the voltage of the main controller is reset by the voltage drop before the microcomputer of the remote controller is reset after the microcomputer is reset by a voltage drop, the remote controller displays a normal display by the voltage recovery, and The operation command is stopped and the operation is turned off based on the abnormality information stored in itself. As a result, the combustor is maintained in the stopped state of all operations, and safety is ensured.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. FIG. 1 is a schematic configuration diagram of a combustor as a water heater that implements the method of the present invention, FIG. 2 is a flow chart at the time of occurrence of an instantaneous power failure that explains the first implementation method of the present invention, and FIG. 3 is a second diagram of the present invention. It is a flow diagram at the time of the occurrence of an instantaneous power failure, which describes the implementation method of

In FIG. 1, reference numeral 1 is a water heater, which has a burner, a heat exchanger and the like. The water heater 1 has a main body controller 2 that directly controls each part of the water heater, and the main body controller 2
Has a built-in microcomputer. A remote controller 3 is provided for issuing operation commands and setting hot water supply temperature to the main body controller 2. A microcomputer is built in the remote controller 3. The main body controller 2 and the remote controller 3 are backed up by capacitors. The power supply backup time is set so that the microcomputer incorporated in the remote controller 3 can operate longer than the microcomputer incorporated in the main body controller 2.

A first embodiment of the method of the present invention will be described with reference to FIG. The abnormality that has occurred in the combustor 1 is detected by a sensor or the like and sent to the main body controller 2. When the main body controller 2 receives a certain abnormality information among the abnormalities of the combustor, the main body controller 2 instructs the combustor 1 to perform a safe operation to stop the combustion operation and put it in a standby state (S11), and the abnormality information is remote-controlled. As long as the situation continues to 3 continue to send. Upon receiving the abnormality information, the remote controller 3 displays the abnormality and stores the state and type of the abnormality in the memory of the microcomputer (S12). In such a situation, if an instantaneous blackout occurs, the power supply of the microcomputer of the main body controller 3 is exhausted and the microcomputer of the main body controller 3 is reset as time passes. The remote controller 3 stops the display in order to save power consumption (S13), but the power source is still backed up. When the voltage of the remote controller 3 is restored while the microcomputer of the remote controller 3 is operating, the remote controller 3 again displays an abnormality based on the abnormality information stored in the microcomputer (S14) and resets the abnormality information. Notify the controller 2 of the main body at. The main body controller 2 again issues a safe operation command to the combustor 1 based on the abnormality information received from the remote controller 3.

Next, a second embodiment of the method of the present invention will be described with reference to FIG. When the main body controller 2 receives a certain abnormality information of the abnormality of the combustor, the main body controller 2 instructs the combustor 1 to perform a safe operation of stopping the combustion operation and putting it in a standby state (S21), and the abnormality information is remote-controlled. As long as the situation continues to 3 continue to send. Upon receiving the abnormality information, the remote controller 3 displays the abnormality and stores the abnormal state in the memory of the microcomputer with a flag (S22). In such a situation, if an instantaneous blackout occurs, the power supply of the microcomputer of the main body controller 3 is exhausted and the microcomputer of the main body controller 3 is reset as time passes. As a result, all operating operations of the combustor 1 are stopped.
On the other hand, the remote controller 3 stops displaying in order to save power consumption (S23), but the power source is still backed up. The process up to this point is the same as in the first embodiment. When the voltage of the remote controller 3 is restored while the microcomputer of the remote controller 3 is operating, the remote controller displays normal regardless of the abnormal information stored in the remote controller (S24). The operation command is stopped and the operation is turned off (S25). As a result, the combustor can be maintained in the stopped state of all operations without being restarted.

[0011]

According to the present invention, which has the above-described structure,
According to the method for coping with a momentary power failure of the combustor described in (4), the main body controller notifies the remote controller of the abnormality of the combustor, and the remote controller displays the abnormal information obtained from the main body controller and stores it in the microcomputer. In addition, when the voltage is restored after a momentary power failure, the abnormal information stored by itself is displayed again and the abnormal information is notified to the controller of the main body in the reset state. Can prevent the risk of re-operation and ensure safety. Claim 2
According to the method for coping with a momentary power failure of the combustor described in (4), the main body controller notifies the remote controller of the abnormality of the combustor, and the remote controller displays the abnormal information obtained from the main body controller and stores it in the microcomputer. Also, when the voltage is restored after a momentary power failure, the normal display is performed and the operation is turned off based on the abnormal information stored by itself. Similarly, at the momentary power failure during safe operation, the combustor restarts. It is possible to prevent the risk of doing so and ensure safety.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a combustor as a water heater in which the method of the present invention is implemented.

FIG. 2 is a flowchart for explaining the first implementation method of the present invention when an instantaneous blackout occurs.

FIG. 3 is a flowchart illustrating a second implementation method of the present invention when an instantaneous blackout occurs.

FIG. 4 is a flowchart illustrating a conventional method when an instantaneous blackout occurs.

[Explanation of symbols]

 1 Combustor 2 Main unit controller 3 Remote controller

Front page continuation (72) Inventor Shinya Fujimoto No. 32, Akashi-cho, Chuo-ku, Kobe-shi, Hyogo

Claims (2)

[Claims] 1. A method for coping with an instantaneous power failure in a combustor in which a power supply is backed up so that the microcomputer incorporated in the remote controller can operate for a longer period of time than the microcomputer incorporated in the main body controller of the combustor during an instantaneous power failure. The controller informs the remote controller of the abnormality of the combustor, and the remote controller displays the abnormality information obtained from the main body controller and stores it in the microcomputer, and at the time of voltage recovery after momentary power failure, the remote controller stores it. A method for coping with a momentary power failure of a combustor, characterized in that the abnormality information is displayed again and the abnormality information is notified to a controller of the main body in a reset state. 2. A method for coping with an instantaneous power failure in a combustor in which a power supply is backed up so that the microcomputer incorporated in the remote controller can operate for a longer period of time than the microcomputer incorporated in the controller of the main body of the combustor during an instantaneous power failure. The controller informs the remote controller of the abnormality of the combustor, and the remote controller displays the abnormality information obtained from the main body controller and stores it in the microcomputer, and when the voltage is restored after the momentary power failure, it displays a normal state and The method for coping with a momentary blackout of a combustor is characterized in that the operation is turned off in accordance with the abnormality information stored in.