JP2000314505A - Combustion apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combustion apparatus which enables accurate setting of various information such as the type of gas, while achieving lower cost. SOLUTION: This combustion apparatus is provided with a control means H to control operation based on information for combustion control. In this case, a memory position switching means 22 is arranged to perform a switching to multiple memory positions. In each of the multiple memory positions, a plurality of setting switches 23 for setting binary information are installed. As each of the multiple memory positions, memory means 102 are provided to store the memory position by the memory position switching means 22 and the binary information with the plurality of setting switches 23 as set information in plurality, and the control means H obtains information for combustion control from the set information stored in the memory means 102 to control operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus provided with control means for controlling operation based on combustion control information.

[0002]

2. Description of the Related Art In a combustion apparatus as described above, a plurality of setting switches for setting binary information are provided, and various information such as a gas type is set by appropriately changing the setting state of the plurality of setting switches. There is known an apparatus that controls the operation by obtaining combustion control information from various information obtained by the plurality of setting switches. In addition, in such a combustion device, binary information such as ON / OFF is set by each of the plurality of setting switches, and the combustion control information is obtained in the setting state of the plurality of setting switches. The setting state of the plurality of setting switches is maintained as one storage state. That is, the setting states of the plurality of setting switches are directly used as various information such as the gas type. For example, when the gas type to be used is changed, the setting state of the plurality of setting switches is changed.

[0003]

However, in the conventional combustion apparatus, since the setting state of the plurality of setting switches is used as various information such as the gas type, only binary information is set by the plurality of setting switches. Therefore, a number of setting switches are required in accordance with the number of various kinds of information such as gas types, especially when there are a lot of various kinds of information such as gas types, and many setting switches are required. There was a disadvantage of increasing costs.

The present invention has been made in view of such a point, and an object of the present invention is to provide a combustion apparatus capable of accurately setting various kinds of information such as gas types while reducing costs. The point is to provide.

[0005]

According to the first aspect of the present invention, there is provided a combustion apparatus provided with control means for controlling an operation based on combustion control information. There are provided storage state switching means capable of switching between a plurality of storage states, a plurality of setting switches for setting binary information in each of the plurality of storage states, and a storage state for each of the plurality of storage states. Storage means for storing a plurality of sets of information as storage information by the switching means and binary information by a plurality of setting switches in the storage state as set information is provided.
The operation is controlled by obtaining combustion control information from the set information stored in the storage means.

In other words, when setting various information such as gas type, various information is set by a plurality of setting switches in a state where the storage state is set by the storage state switching means, and the storage state at that time is set. The storage state by the switching means and the binary information of the plurality of setting switches are stored as set information, and the storage state switching means is set to another storage state, whereby various information is set by the plurality of setting switches. Then, the storage state by the storage state switching means at that time and the binary information of the plurality of setting switches are stored as group information, and by repeating such an operation, all of various information such as the gas type is set. It is possible to do. Therefore, in each of a plurality of types of storage states, binary information can be set by a plurality of setting switches. If the storage state can be switched between two states, the binary information can be set by each of the plurality of setting switches. In the case where the value information can be set twice and the storage state can be switched to three states, the binary information can be set three times by each of a plurality of setting switches and can be switched. 2 with one setting switch according to the number of
The value information can be set to double, triple or more. In this manner, the binary information or more can be set by each of the plurality of setting switches, so that the number of setting switches for various kinds of information such as the gas type can be reduced, and the cost can be reduced. Various kinds of information such as gas types can be set while trying.

For one of the plurality of sets of information, the storage state of the storage state switching means and the binary information of the plurality of setting switches in the storage state are stored in the storage state without being stored in the storage means. Group information,
It is conceivable that the remaining set information is stored in the storage means, that is, the setting state by the storage state switching means and the plurality of setting switches is made one storage state. In this case, the storage means is stored in the storage means. When the set information is changed, the storage state of the storage state switching means and the binary information of the plurality of setting switches are changed once, and the storage state of the storage state switching means at that time and a plurality of values in the storage state are changed. After the binary information by the setting switch is stored in the storage means, it is necessary to reset the storage state of the storage state switching means and the binary information of the plurality of setting switches before the change, and the change operation is complicated. There is a possibility that it becomes complicated. However, by storing all of the plurality of sets of information in the storage means, even when changing the set information stored in the storage means, the storage state of the storage state switching means to be changed and the plurality of setting switches at that time are used. It is only necessary to store the binary information in the storage means, and the above disadvantage can be solved.

According to the second aspect of the present invention, the control means executes a set information discriminating process for discriminating whether or not each of the plurality of sets of information is normal, and executes the storage means in the set information discriminating process. When the set information stored in the storage device is abnormal, the subsequent operation is controlled. That is, when a plurality of sets of information are not stored properly, the set information becomes abnormal. Therefore, it is determined whether or not the plurality of sets of information are properly stored by executing the set information determining process. When a plurality of sets of information are abnormal in the set information determination processing, the abnormality can be determined, and the operation can be prevented from continuing with the set information being abnormal. .

According to the third aspect of the present invention, the storage means includes a nonvolatile storage element. Therefore, even when the power is stopped or the power is reset and the power is stopped, a plurality of sets of information can be retained, so that the storage contents of the storage unit are erased every time the power is stopped or the power is reset. In addition, there is no need to re-store the group information every time a power failure or power reset occurs, and the usability can be improved.

According to the fourth aspect of the present invention, the storage means stores a plurality of pieces of setting information using a plurality of sets of information as setting information, and the control means stores a plurality of pieces of setting information each having the same information. It is configured to execute a comparison process for comparing whether or not the operation is performed, and when at least one of the plurality of setting information is different information in the comparison process, the subsequent operation is restrained. In other words, when the stored information disappears over time, that is, when a so-called bit loss occurs, at least one of the plurality of sets of information becomes different information. Therefore, it is determined whether each of the plurality of setting information is the same information. Bit missing can be detected by an easy operation of comparing the two. Then, when at least one of the plurality of sets of information is different information, the subsequent operation can be suppressed, and the operation can be suppressed so as to prevent the operation from continuing with the bit missing. Therefore, bit missing can be detected by an easy operation of comparing whether each of a plurality of setting information is the same information, and operation can be prevented from continuing with the bit missing occurring. Therefore, it is possible to prevent occurrence of a new abnormality by operating based on incorrect setting information due to missing bits, and to improve safety.

According to the invention described in claim 5, the storage means stores a plurality of setting information using a plurality of sets of information as setting information, and the control means determines whether each of the plurality of setting information is normal or abnormal. When the setting information is abnormal in the setting information determining process, the correcting process is performed to correct the abnormal setting information based on the other setting information. It is configured to be. In other words, when the stored information disappears with the passage of time, that is, when a so-called bit loss occurs, the stored setting information becomes abnormal, so the setting information determination process is performed for each of the plurality of setting information, If the setting information is abnormal in the setting information determination process, a correction process can be executed to correct the abnormal setting information based on other normal setting information. Therefore, even if a bit loss occurs, the occurrence of the bit loss can be detected and a plurality of setting information can always be corrected normally, so that the operation can always be performed based on the normal setting information. And the safety can be further improved.

According to the invention described in claim 6, the control means executes inspection operations for a plurality of control functions in each of a plurality of inspection steps based on a command from the mode switching command means. The control mode for inspection and the normal control mode for executing a normal operation based on a plurality of control functions are configured to be freely switchable, and the mode switching command means is configured to also serve as the storage state switching means. . Therefore, the mode can be switched between the inspection control mode and the normal control mode, and the cost can be reduced as compared with the case where the mode switching unit and the storage state switching unit are separately provided.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which a combustion device according to the present invention is applied to a hot water supply device will be described with reference to the drawings. As shown in FIG. 1, the hot water supply apparatus includes a hot water supply unit K for heating supplied water and supplying hot water to the tap 7, a control unit H as control means for controlling operation of the hot water supply unit K, and a control unit H. A remote controller R for instructing the H to input operation information is provided.

The hot water supply unit K comprises a heat exchanger 2 for water heating provided in the combustion chamber 1, a gas combustion type burner 3 for heating the heat exchanger 2, and the like.
A fan 4 that allows the combustion air to flow from the upstream side and that can change and adjust the amount of ventilation is also provided, and a rotation speed sensor 4a that detects the rotation speed of the fan 4 is also provided.

The heat exchanger 2 is connected to a water inlet channel 5 to which water is supplied from, for example, a household tap, and a hot water outlet channel 6 for discharging heated hot water to a manual hot water tap 7. I have. The water inlet 5 is provided with a water flow sensor 8 for detecting the amount of water flowing to the heat exchanger 2 and an inlet water temperature thermistor 9 for detecting the temperature of water supplied through the water inlet 5. In addition, the tap water path 6 is provided with a tap water temperature thermistor 10 for detecting the temperature of tap water from the tap tap 7.

The fuel supply passage 11 for the burner 3 is provided with an electromagnetically operated on-off valve 12 for intermitting fuel supply, and an electromagnetically operated fuel adjusting means capable of changing and adjusting a fuel supply amount (burning amount of the burner 3). A gas amount control valve 13 is provided, and an igniter 14 for executing an ignition operation for the burner 3 and a frame rod 15 for detecting whether or not the burner 3 is ignited are provided near the burner 3. .

The remote controller R includes an operation switch 16 for instructing start / stop of the operation of the hot water supply unit K, a temperature setting switch 17 capable of changing and setting a target temperature for tapping, and a display for displaying a tapping temperature and a target temperature for tapping. It comprises a unit 18, an operation lamp 19 for indicating that the burner 3 is operating, a combustion lamp 20 for indicating that the burner 3 is burning.

As shown in FIG. 2, the control unit H includes a memory 102 having a non-volatile storage element and a comparison / discrimination processing for executing a comparison process and a discrimination process on information stored in the memory 102. It comprises means 101 and combustion control means 100 for obtaining operation control information from the stored information stored in the memory 102 and controlling the operation. A plurality of (for example, eight) binary information setting switches 21 capable of setting binary information are provided, and one of the binary information setting switches 21 is a storage state as storage state switching means capable of switching between two storage states. The remaining seven binary information setting switches 21 are configured as changeover switches 22, and are configured as setting switches 23 for setting binary information in each of the two storage states.

Further, the control unit H is configured to execute an inspection control mode for executing an inspection operation for a plurality of control functions in each of a plurality of inspection processes, based on a command from the mode switching command means, and a plurality of inspection control modes. It is configured to be freely switchable to a normal control mode for executing a normal operation based on the control function. The mode switching command means is configured to be shared by the storage state changeover switch 22 as the storage state switching means.

The memory 102 is provided with a nonvolatile storage element, and stores, for each of a plurality of types of storage states, a storage state by the storage state switch 22 and binary information by a plurality of setting switches 23 in the storage state. It is configured to store a plurality of the set information as the set information, and further configured to store a plurality of the set information using the plurality of the set information as the set information.

More specifically, when setting various kinds of information such as gas types, a plurality of setting switches 2 are set in a state where the storage state changeover switch 22 is set to a certain storage state.
3, various information is set, and the storage state at that time by the storage state changeover switch 22 and the plurality of setting switches 2
By storing the binary information of No. 3 as group information and setting the storage state to another storage state by the storage state changeover switch 22, various information is set by the plurality of setting switches 23 in the same manner as described above. The storage state at that time by the storage state changeover switch 22 and the binary information of the plurality of setting switches 23 are stored as group information, and the same information as the setting information is set using the plurality of group information as setting information. A plurality of setting information is stored as information.

That is, in this embodiment, since the storage state changeover switch 22 can be switched between two storage states,
The memory 102 has a storage state by the storage state changeover switch 22 and a plurality of setting switches 23 in the storage state.
Are stored as two sets of binary information, and backup setting information that is the same information as the execution setting information is stored as the two sets of information as execution setting information.

As described above, in each of the plurality of types of storage states, the binary information can be set by the plurality of setting switches 23, so that the quaternary information is set by each of the plurality of setting switches 23. This makes it possible to reduce the number of setting switches for various types of information such as gas types, and to set various types of information such as gas types while reducing costs.

The comparing / determining means 101 includes a group information determining process for determining whether each of the plurality of group information is normal or not.
In addition, while performing each process of the comparison process of comparing whether each of the plurality of setting information is the same information, when the pair information is abnormal in the pair information determination process, or in the comparison process When at least one of the plurality of setting information is different information, the remote controller R
Is configured to blink the combustion lamp 20 to perform the notification operation. That is, in the set information determination process, the two sets stored in the memory 102 as the execution setting information are executed in a state where the storage state changeover switch 22 as the mode change command means is set to the inspection control mode. It is determined whether or not each piece of information is properly stored. Further, the comparison process is executed in a state where the storage state changeover switch 22 as the mode changeover instruction means is set to the normal control mode, and whether the execution setting information and the backup setting information are the same information. Or to compare.

In the normal control mode, the combustion control means 100 obtains combustion control information from a plurality of sets of information stored in the memory 102 and, based on the combustion control information and the setting information of the remote controller R, sets a burner. 3 ignition
In the inspection control mode, various inspection processes are executed by controlling the combustion state including fire extinguishing. More specifically, information such as a gas type and the number of a hot water supply device is read from a plurality of sets of information stored in the memory 102 as setting information for execution, and combustion control information suitable for the information is obtained. Then, the operation is controlled based on the obtained combustion control information. That is, in the state where the storage state changeover switch 22 as the mode changeover command means is set to the normal control mode, after the operation of the operation switch 16 is set to the hot water operation state with the ON operation, the operation of opening the hot water tap 7 is started. When the flow rate detected by the flow rate sensor 8 exceeds the set flow rate, the ventilation operation by the fan 4 is started and the intermittent valve 12 is opened to open the gas flow control valve 1.
Adjust the valve opening so that 3 becomes the ignition gas amount,
The burner 3 is ignited by the igniter 14 and confirmed by the frame rod 15.

After that, the hot water supply temperature is set to the target temperature based on the detection information of each of the incoming water temperature thermistor 9, the hot water temperature thermistor 10, and the water flow rate sensor 8, and the information of the target temperature set by the temperature setting switch 17. The amount of combustion of the burner 3 required for the calculation is calculated. Then, while adjusting and controlling the gas amount adjusting valve 13 so as to have a gas amount corresponding to the obtained combustion amount, the fan 4 is controlled so that the ventilation amount of the fan 4 is in an appropriate combustion state with respect to the adjusted gas amount.
Then, feed-forward control for adjusting and controlling the ventilation amount is performed, and further, feedback control for finely adjusting the opening of the gas amount adjusting valve 13 so that the detected temperature of the tapping water temperature thermistor 10 becomes the target temperature is executed. In this way, hot water at the target temperature is supplied from the hot water tap 7.

Then, when the storage state changeover switch 22 as the mode changeover command means is set to the inspection control mode, the process inspection is executed for a plurality of control functions. In other words, if it is an inspection of the ignition / extinguishing operation of the burner 3, the intermittent valve 12 and the gas amount adjusting valve 13 are opened,
The burner 3 is ignited by the igniter 14 or the combustion of the burner 3 is stopped by closing the intermittent valve 12.
In addition, in the inspection of the incomplete combustion determination operation, the CO concentration that temporarily increases when the burner 3 is ignited is detected by a CO sensor or the like to determine whether the incomplete combustion determination operation is performed. To inspect.

In such an inspection, although the ignition of the burner 3 is performed, the ignition is not confirmed by the frame rod 15, the ignition of the burner 3 is not performed, or the inspection is abnormal, or the inspection is incomplete. When an inspection abnormality such as combustion is not determined occurs, a notification operation is performed and the display 18 displays the inspection item in which the abnormality has occurred and the details of the abnormality.

When the set information is abnormal in the set information discriminating process, or when the two set information are different from each other in the comparing process, the combustion control means 100 operates the hot water supply apparatus thereafter. It is configured to check. That is, when the set information is abnormal in the set information determination processing, or when the two setting information are different information in the comparison processing, the subsequent combustion control of the burner 3 cannot be executed.

The operation of the control section H will be described with reference to the flowchart of FIG. First, operation switch 1
If the storage state changeover switch 22 as the mode changeover instruction means is set to the normal control mode in a state where the switch 6 is ON, it is determined whether or not it is the comparison processing execution timing such as elapse of the set time. If it is time to execute the comparison process, a comparison process is performed to compare whether the two setting information stored in the memory 102 are the same information (Steps 1 to 4). If the two setting information are different from each other, the combustion lamp 2
0 is blinked to perform a notification operation, and an abnormal stop is performed so that the subsequent combustion control of the burner 3 cannot be executed (steps 5 to 5).
7).

In the case where the two setting information are the same information, if the water flow detected by the water flow sensor 8 in accordance with the opening operation of the hot water tap 7 exceeds the set water flow, the ventilation by the fan 4 is performed. The operation is started, the intermittent valve 12 is opened, and the gas amount adjusting valve 13 is opened and adjusted to the ignition gas amount. An ignition process is executed (steps 8 and 9). Even if the ignition process is performed, if the ignition of the burner 3 is not confirmed by the flame rod 15 and the ignition is not performed, an error is displayed on the display unit 18 and the intermittent valve 12 and the gas amount adjusting valve 13 are closed. Then, an abnormal stop for stopping the operation of the fan 4 is performed.

When the ignition process is executed and the burner 3 is ignited, the incoming water temperature thermistor 9 and the outgoing water temperature thermistor 1
0, the amount of combustion of the burner 3 required to bring the hot water supply temperature to the target temperature is calculated based on the respective detection information of the water flow rate sensor 8 and the information of the target temperature set by the temperature setting switch 17. Ask at. Then, the gas amount adjusting valve 13 is adjusted so that the gas amount corresponds to the obtained combustion amount.
And feed-forward control for adjusting and controlling the ventilation amount of the fan 4 so that the ventilation amount of the fan 4 is in an appropriate combustion state with respect to the adjusted gas amount. Then, feedback control for finely adjusting the opening of the gas amount control valve 13 is performed so that the target temperature becomes the target temperature (step 10).

As described above, the control of adjusting the gas amount and the air flow rate by the feedforward control and the feedback control is performed by the water flow rate sensor 8 when the hot water tap 7 is closed.
The flow is executed until the water flow detected at the step becomes smaller than the set water flow or the operation switch 16 is turned off (steps 11 and 12). That is, when the flow rate detected by the flow rate sensor 8 becomes less than the set flow rate or when the operation switch 16 is turned off, the intermittent valve 12 and the gas flow rate control valve 13 are closed, and after the set time has elapsed. A combustion stop process for stopping the operation of the fan 4 to stop the combustion of the burner 3 is executed (step 13).

As described above, in the normal control mode, the above-described operation is executed, and when the storage state changeover switch 22 as the mode change command means is set to the control mode for inspection, the setting information for execution is set. Then, a pair information discriminating process for discriminating whether or not each of the two pair information is normal is executed (step 14). If the set information is abnormal in the set information discrimination processing, the combustion lamp 20 of the remote control R is turned on and off to perform a notification operation.
(Steps 15 to 17).

If the set information is normal in the set information discrimination processing, various inspection steps are executed (step 1).
8). In other words, if it is an inspection of the ignition / extinguishing operation of the burner 3, the intermittent valve 12 and the gas amount adjusting valve 13 are opened,
The burner 3 is ignited by the igniter 14 or the combustion of the burner 3 is stopped by closing the intermittent valve 12.
In addition, in the test of the incomplete combustion determination operation, the CO concentration that temporarily increases when the burner 3 is ignited is detected by a CO sensor or the like to determine whether the incomplete combustion determination operation is performed. To inspect.

In such an inspection, although the ignition of the burner 3 is performed, the ignition is not confirmed by the flame rod 15 or the ignition of the burner 3 is not performed. When an inspection abnormality such as incomplete combustion is not determined, a notification operation is performed, and the inspection item in which the abnormality has occurred and the content of the abnormality are displayed on the display unit 18.

[Another Embodiment] (1) In the above embodiment, the control unit H executes a comparison process for comparing whether two pieces of setting information stored in the memory 102 are the same information. But
The following processing may be executed instead of the comparison processing. That is, a setting information determination process for determining whether each of the two setting information is normal or abnormal is executed, and when the setting information is abnormal in the setting information determining process, the setting of the abnormality is performed based on the other setting information. A correction process for correcting information may be executed. More specifically, in the setting information determining process, it is determined whether each of the execution setting information and the backup setting information stored in the memory 102 is abnormal or normal, and the setting information determining process is performed. When the execution setting information is abnormal, the execution setting information is corrected based on the backup setting information, and
When the setting information for backup is abnormal in the setting information determination processing, the setting information for backup is modified based on the setting information for execution.

The specific operation will be described with reference to the flowchart of FIG. Note that, in the flowchart of FIG. 3 in the above embodiment, the operations of steps 3 to 5 corresponding to the operation of the comparison process are changed to the operations shown in the flowchart of FIG. First, when the set time elapses and the set information discrimination processing execution timing is reached, the number of execution abnormalities Na in which the set information for execution is judged to be abnormal in the set information discrimination processing, and the backup in the set information discrimination processing The number of times Nb for backup determined that the setting information is abnormal is reset, the setting information determination process is executed, and it is determined whether the setting information for execution and the setting information for backup are abnormal or normal (steps 21 to 21). 2
3).

As described above, when the setting information for execution is abnormal and the setting information for backup is abnormal, the combustion lamp 20 of the remote controller R is turned on and off to perform a notification operation, and the subsequent combustion control of the burner 3 is performed. (Steps 24 to 27). When the setting information for execution is abnormal and the setting information for backup is normal, the execution error number Na is set to the maximum number N.
If it is less than max, a correction process for correcting the setting information for execution of the abnormality based on the setting information for backup is executed, the number of times of execution abnormality Na is incremented by 1, and the setting information determination process is executed again (steps 28 to 28). 30).

When the setting information for execution is normal and the setting information for backup is abnormal, if the number Nb of backup abnormalities is less than the maximum number Nmax,
A correction process for correcting the abnormal backup setting information based on the execution setting information is executed, the backup error frequency Nb is incremented by 1, and the setting information determination process is executed again (steps 31 to 34). If both the execution setting information and the backup setting information are normal, the process proceeds to step 8 in FIG. 3 in the above embodiment. Note that the other operations are the same as the operations based on the flowchart in FIG.

Further, instead of the above-described configuration, the comparison processing in the above-described embodiment may be executed, and the above-described setting information determination processing and correction processing may be executed.
That is, the operation in FIG. 4 is executed before the process proceeds from step 5 to step 8 in FIG. Therefore, if it is the comparison processing execution timing and the setting information determination processing execution timing, after performing the comparison processing in the above embodiment, the above-described setting information determination processing and correction processing are performed. If it is the comparison processing execution timing and not the setting information determination processing execution timing, only the comparison processing in the above embodiment is executed. Also, if it is not the comparison process execution timing and the setting information determination process execution timing,
The above-described setting information determination processing and correction processing are executed.

(2) In the above embodiment, the comparison process is executed in the normal control mode, and the set information discrimination process is executed in the inspection control mode. However, the comparison process may be executed only. Alternatively, only the set information determination process may be performed. That is, the various processes such as the comparison process and the set information discrimination process in the above embodiment and the setting information discrimination process and the correction process in another embodiment (1) can be executed alone or in an appropriate combination.
Each of the plurality of processes can be executed separately. Also,
The timing at which each of the plurality of processes is executed may be appropriately changed, for example, after setting various information such as the gas type by the binary information switch 21 and then executing at least one of the group information discrimination process and the comparison process. It is possible.

(3) In the above embodiment, one control unit H is configured to include the memory 102, the comparison / determination unit 101, and the combustion control unit 100. And the memory 102 and the comparing / determining means 101 may be configured as separate control units. That is, this is effective when an existing hot water supply device is applied, and a control unit including the memory 102 and the comparing / determining means 101 may be externally attached to the control unit of the hot water supply device.

(4) In the above embodiment, the storage state switching means is switchable between two storage states by the binary information switch 21 capable of setting binary information. Binary information switch 2 switchable to storage state
It may be constituted by a switch separate from 1. In this case, in each of the storage states, binary information can be set by a plurality of setting switches 23. For example, if the storage state switching means can switch between three storage states,
A plurality of setting switches 23 can set binary information up to three times.

(5) In the above embodiment, the mode switching command means is configured to also serve as the storage state switching switch 22 as the storage state switching means. They may be provided separately.

(6) In the above embodiment, the memory 102 is provided with a nonvolatile storage element. However, the memory 102 may be provided with a volatile storage element, and various storage elements are applicable.

(7) In the above embodiment, an example is shown in which the combustion device according to the present invention is applied to a hot water supply device, but it is also applicable to various other devices such as a heating device.

[Brief description of the drawings]

FIG. 1 is an overall schematic configuration diagram of a water heater.

FIG. 2 shows a control block.

FIG. 3 is a flowchart showing a control operation.

FIG. 4 is a flowchart illustrating a control operation according to another embodiment.

[Explanation of symbols]

 22 storage state switching means 22 mode switching command means 23 setting switch 102 storage means H control means

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshikatsu Ishikawa 1-152 Oka, Minami-ku, Minato-ku, Osaka-shi, Osaka F-term in Harman Co., Ltd. CC06 CC22 DD02

Claims (6)

[Claims] 1. A combustion apparatus provided with control means for controlling operation based on combustion control information, comprising: storage state switching means capable of switching between a plurality of storage states; In each of the storage states, a plurality of setting switches for setting binary information are provided. For each of the plurality of types of storage states, the storage state by the storage state switching means and the binary by the plurality of setting switches in the storage state Storage means for storing a plurality of sets of information as set information is provided, and the control means is configured to control the operation by obtaining combustion control information from the set information stored in the storage means. Burning device. 2. The method according to claim 1, wherein the control unit executes a group information determining process of determining whether each of the plurality of group information is normal, and stores the group information stored in the storage unit in the group information determining process. 2. The combustion device according to claim 1, wherein when the set information is abnormal, the subsequent operation is restrained. 3. The combustion apparatus according to claim 1, wherein the storage unit includes a nonvolatile storage element. 4. The storage means stores a plurality of setting information using a plurality of sets of information as setting information, and the control means compares whether each of the plurality of setting information is the same information. The comparison processing according to any one of claims 1 to 3, wherein the comparison processing is performed, and when at least one of the plurality of setting information is different information in the comparison processing, subsequent operation is checked. A combustion device as described. 5. The storage means stores a plurality of setting information using a plurality of sets of information as setting information, and the control means determines whether each of the plurality of setting information is normal or abnormal. Executing the processing, and when the setting information is abnormal in the setting information determination processing, executing a correction processing for executing a correction processing for correcting the abnormal setting information based on other setting information. The combustion device according to any one of claims 1 to 4, wherein: 6. An inspection control mode for executing an inspection operation for a plurality of control functions in each of a plurality of inspection steps, based on a command from a mode switching instruction means, based on an instruction from a mode switching instruction means, The mode switching command means is configured to be freely switchable to a normal control mode for executing a normal operation based on a control function, and the mode switching command means is configured to also serve as the storage state switching means. Any one
Item 13. The combustion device according to Item.