JP2708689B2 - Combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus in which data relating to adjustment values of a control circuit and the like are stored in a semiconductor nonvolatile memory.

[0002]

2. Description of the Related Art For example, in a hot air heater, a DIP switch and a semi-fixed VR are conventionally used for adjusting a misfire determination level, adjusting a fan speed, and adjusting a proportional valve current. However, since the DIP switch usually has only a capacity of about four to seven circuits, it is not possible to finely adjust the adjustment value. If many DIP switches are used side by side, a large space is required and the cost of parts is increased. The adjustment value of the semi-fixed VR changes when the sliding piece moves due to vibration or the like.

[0003]

Therefore, the present inventors have
A prototype of a hot air heater in which each adjustment value of a fan current, a proportional valve current, and a misfire determination level is stored in a semiconductor nonvolatile memory (E ² PROM) was manufactured. However, the above hot air heater is
Until the adjustment operator adjusts the adjustment values of the safety circuit and the control circuit, and stores the data of each adjustment value in the E ² PROM, the E ² P
The data storage area of the ROM is in a non-data state (or disorderly data is stored), and it has been confirmed that when the operation is started, an abnormal operation state is caused.

An object of the present invention is to provide a semiconductor nonvolatile memory with:
An object of the present invention is to eliminate an abnormal operation state of a combustion device of a type that stores data relating to an adjustment value of a control circuit or the like before an adjustment operation.

[0005]

In order to solve the above-mentioned problems,
The present invention relates to a semiconductor nonvolatile memory capable of electrically rewritably storing data relating to a safety circuit and a control circuit for controlling a combustion actuator, and reading and converting data stored in the semiconductor nonvolatile memory to convert the safety circuit. An initialization setting means for performing an initialization operation of writing a plurality of predetermined standard values as standard data to the semiconductor nonvolatile memory, and And a writing circuit for converting the plurality of adjustment values adjusted by the adjustment unit into data and storing the data in the semiconductor non-volatile memory, when initialization is instructed. The initialization setting means performs the initialization operation, and after completion of the initialization operation, the readout circuit reads a plurality of standard data from the semiconductor nonvolatile memory. And convert it to a standard value, actuate the safety circuit and the control circuit based on the standard value, and in this state, sequentially adjust a plurality of standard values by the adjusting means to adjust the adjusted value. Corresponding data is stored in the semiconductor nonvolatile memory by a write circuit.

[0006]

When no data is stored in the semiconductor non-volatile memory, an initialization operation is performed to instruct initialization and write a plurality of predetermined standard values as standard data into the semiconductor non-volatile memory. A reading circuit reads a plurality of standard data from the semiconductor nonvolatile memory and converts the data into a standard value, and operates a safety circuit and a control circuit based on the standard value. In this state, a plurality of standard values are sequentially adjusted by the adjusting means, and data corresponding to the adjusted adjustment values are stored in the semiconductor nonvolatile memory by the writing circuit. A reading circuit reads the data stored in the semiconductor nonvolatile memory, converts the data, and sets the converted values as adjustment values for the safety circuit and the control circuit. The safety circuit and the control circuit operate based on the adjustment value.

[0007]

According to the present invention, when the initialization is instructed at the time of the first operation in which no data is stored in the semiconductor nonvolatile memory, a plurality of predetermined standard values are written in the semiconductor nonvolatile memory as standard data, so that the combustion during the adjustment work is performed. The operation (operating state) of the device is stabilized, and the amount of work for adjusting the adjustment value by the adjusting means can be reduced.

[0008] One embodiment of the present invention will be described with reference to FIGS. 1-7. As shown in FIG. 1, the gas warm air heater R includes a gas combustor 1 that burns at a first to eighth speed combustion level, a thermocouple 2 that detects abnormal combustion, and a gas amount supplied to the gas combustor 1. , A convection fan 4 for supplying combustion air to the gas combustor 1, and a control unit 5 for controlling the proportional valve 3, the convection fan 4, and the like. Also,
6 is a heater housing, 61 is an air guideway for guiding the room air k to the gas combustor 1, 611 is a thermistor for detecting room temperature, and 7 is a gas pipe.

The gas combustor 1 includes a ceramic combustion plate 1.
1, a combustion cylinder 12 having a sparker sp and a thermocouple 2 disposed therein, a gas g ejected from a nozzle n disposed downstream of the air guide path 61, and indoor air k guided by the air guide path 61. And a mixing chamber 13.

The thermocouple 2 is disposed close to the upper surface of the combustion plate 11, is exposed to a combustion flame, and sends out an electric output according to the combustion state of the gas combustor 1.

[0011] The proportional valve 3 is provided with a gas g
This is a valve for adjusting the amount of gas, and the amount of passing gas increases in proportion to the amount of electricity.

The convection fan 4 includes an impeller 41 pivotally mounted in a duct 67 downstream of the gas combustor 1, and an impeller 41.
And a motor 42 for driving the motor.

The gas pipe 7 is provided with solenoid valves 71 and 72 and the proportional valve 3 in order from the upstream side, and is connected to the nozzle n.
The proportional valve 3 has a gas governor for keeping the secondary gas pressure constant, and the gas governor further has a gas amount adjusting screw for adjusting the gas supply amount at the first combustion level. .

The heater housing 6 is provided with suction ports 64 and 65 for room air k used for mixing and combustion at an upper portion on a back surface thereof.
An outlet 66 is provided at the lower part of the front surface. Above inlet 6
Filters 4 and 65 for removing dust in the room are detachably provided in the doors 4 and 65, and a louver 661 for changing a blowing direction of the hot air w is attached to the outlet 66. In addition, 6
Reference numeral 7 denotes a duct that connects the suction port 65 and the air outlet 66.

As shown in FIG. 2, a control unit 5 having a microcomputer (not shown) includes a combustion amount determination circuit 51, a proportional valve drive circuit 52, a fan control circuit 53, a misfire detection circuit 54, and an adjustment mode control circuit. 55, E ² PRO
M56, a write circuit 561, a read circuit 562, an operation control circuit 57, and a notification circuit 58 are provided.

In the normal operation mode, the combustion amount determining circuit 51 determines the difference between the set temperature set by the temperature setting switches (+) (-) 511 and 512 and the room temperature detected by the thermistor 611, the save switch 513 and the rapid Switch 51
The combustion level (first speed to eighth speed) is determined based on the pressing state of No. 4. When the mode is shifted to the proportional valve current adjustment mode, first, the combustion level is fixed to the first speed for adjusting the gas amount adjusting screw, and after pressing a preset switch (for example, a save switch 513), the combustion level is adjusted. To 7th speed.
Further, when shifting to the fan rotation speed adjustment mode, first, the combustion level is fixed to the first speed, and after the save switch 513 is pressed, the combustion level is fixed to the seventh speed.

The proportional valve drive circuit 52 determines each proportional valve current amount at the first to sixth and eighth speeds based on the proportional valve current value at the seventh speed read from the E ² PROM 56 by the read circuit 562. Then, in the normal operation mode, a proportional valve current having a magnitude corresponding to the combustion level determined by the combustion amount determination circuit 51 flows through the proportional valve 3.

The fan control circuit 53 determines each fan current amount in the second to sixth speeds based on the respective fan current values in the first speed and seventh speed read from the E ² PROM 56 by the read circuit 562. Then, in the normal operation mode, a fan current having a magnitude corresponding to the combustion level determined by the combustion amount determination circuit 51 is supplied to the motor 42.

The misfire detection circuit 54, which is a safety circuit, is provided when the intensity of the electric output transmitted by the thermocouple 2 does not reach the Lo-side / Hi-side misfire determination level set for each combustion level group, which will be described later. , It is determined that the gas combustor 1 is in an abnormal combustion state (oxygen-deficient combustion, misfire), and the operation control circuit 5
7, a misfire detection signal is transmitted.

The adjustment mode control circuit 55 simultaneously presses a test switch 550 and a write switch 555 (a normally open push switch that is closed only when any of them are pressed) disposed on the substrate of the control unit 5 (0. (3 seconds or more) to shift the gas hot air heater R to the adjustment and writing mode (first shift to the misfire determination level adjustment and storage mode),
Further, by pressing only a predetermined switch, for example, only the save switch 513, the proportional valve current adjustment and storage mode (first speed pressure adjustment, seventh speed pressure adjustment) → fan rotation speed adjustment and storage are sequentially performed from the misfire determination level adjustment and storage mode. Mode [Lo side, Hi
Side] → misfire determination level adjustment and storage mode → proportional valve current adjustment and storage mode. When the initialization of the E ² PROM 56 is set by the method described later, the adjustment mode control circuit 55 sets the standard misfire determination level (12 mV, 12 mV) on the Lo side / Hi side and the standard combustion level at the seventh-speed combustion level. Rated proportional valve current (200 mA), standard fan current at 1st speed and 7th speed (100 mA, 900 m
Each standard value output corresponding to A) is sent to the writing circuit 561, and the standard data is written to the E ² PROM 56 by the writing circuit 561.

In the judgment level adjustment mode, the temperature setting switches (+) (-) 511, 512 (disposed on the operation panel) and the adjustment mode control circuit 55 constitute misfire judgment level adjustment means. The Lo-side / Hi-side misfire determination level for each of the second-speed, third-speed to eighth-speed combustion level groups is adjusted. Further, in the proportional valve current adjusting and storing mode, the temperature setting switches (+) (-) 511 and 512 and the adjusting mode control circuit 55 constitute a pressure adjusting adjusting means, and perform the rated proportional valve current at the combustion level of the seventh speed. Is adjusted (in units of 1 mA). Further, in the fan rotation speed adjustment mode, the temperature setting switches (+) (-) 511, 512 and the adjustment mode control circuit 55 constitute a fan rotation speed adjustment means, and the fan current (1 mA unit) at the first speed and the seventh speed Adjust).

E ² PROM 56 having a capacity of several k bits
Discloses a technique in which a floating gate is formed in an insulator of SiO ₂ and data is stored by accumulating charges in the gate using a tunnel effect. The number of rewrites is 1
It has a performance of at least ⁵ times and a retention period of at least 10 years. This E
^{2 The} above data stored in the PROM 56 is Lo
It relates to the side / Hi side misfire determination level, relates to the proportional valve current at the seventh speed, and relates to the fan current at the first speed / seventh speed.

In each adjustment mode, the writing circuit 561 is operated by pressing the save switch 513 after setting each adjustment value (it also operates at the time of initialization), and the temperature setting switch (+) (-) It is adjusted by 511, 512 and the like. The Lo side / Hi side misfire determination level, the adjustment value of the proportional valve current at the 7th speed, or the adjustment value of the fan current of the convection fan 4 at the 1st speed and the 7th speed are converted into E ² P
This is a circuit stored in the ROM 56. Further, by switching the connection state of two predetermined ports of a microcomputer (not shown), the E ² PROM 56 can be initialized, and after the control unit 5 is manufactured, the operator can reset the E ² PROM as described above. ² When initialization of PROM 56 is set,
The standard data corresponding to the standard misfire determination level on the Lo side / Hi side, the standard proportional valve current amount at the seventh speed combustion level, and the standard fan current amount at the first speed / seventh speed are automatically E ^2.
The data is written to the PROM 56.

The readout circuit 562 reads out the data written in the E ² PROM 56 at any time, and determines the Lo / Hi side misfire determination level in each of the first to second speed and third to eighth speed combustion amounts, and the proportionality in the seventh speed. The adjustment value of the valve current and the fan adjustment current value at the 1st speed and the 7th speed are converted to these adjustment value signals, and the adjustment mode control circuit 55, the misfire detection circuit 54,
The output is sent to the proportional valve drive circuit 52 and the fan control circuit 53.

The operation control circuit 57 includes an operation switch 571
Is turned on to shift to the normal operation mode, the solenoid valves 71 and 72, the sparker sp, and the louver motor 572 are controlled in a predetermined sequence to bring the gas combustor 1 into a combustion state.
When a misfire detection signal is input from the misfire detection circuit 54, the combustion of the gas combustor 1 is stopped.

The notification circuit 58 is provided with a display 581 (four-digit seven-segment LED), a buzzer 582, and a combustion monitor lamp (weak, medium, strong, sudden) based on each control information signal input from each control circuit. 583 is controlled.

Next, in the gas hot air heater R, E ²
The operation of the control unit 5 relating to the initialization of the PROM 56 will be described with reference to the flowchart of FIG.

At step s1, the connection state of the two predetermined ports of the microcomputer is switched and E
⁽²⁾ Setting of initialization of PROM 56 is instructed (YES)
In this case, the process proceeds to step s2. In step s2, the write circuit 561 receives the standard value output, and corresponds to the standard misfire determination level on the Lo side / Hi side, the standard proportional valve current at the combustion level at the seventh speed, and the standard fan current at the first speed / seventh speed. Is written in the E ² PROM 56. Also, the connection state of the two ports is returned to the original state, and the E ² PR
When the cancellation of the initialization setting of the OM 56 is instructed, the writing of the standard data to the E ² PROM 56 is stopped. still,
The time required to write the standard data into the E ² PROM 56 is several hundred milliseconds. If the writing operation is repeatedly performed until the cancellation of the initialization setting is instructed,
The accuracy of writing can be improved.

Next, the operation of the control unit 5 relating to the control at the time of adjustment in the gas warm air heater R will be described with reference to the flowcharts of FIGS. In step s3, it is determined whether or not the operation switch 571 is in the on state. If it is determined that the operation switch 571 is in the on state (YES), the process proceeds to step s4. In step s4, the gas warm air heater R shifts to the normal operation mode, and proceeds to step s5. In step s5, the simultaneous pressing (0.3 seconds or more) of the test switch 550 and the writing switch 555 is detected. If the simultaneous pressing is detected (YES), the process proceeds to step s6. If the simultaneous pressing is not detected (NO), the process proceeds to step s4. Return. In step s6, the mode is shifted to the adjustment and writing mode, the buzzer 582 is sounded once, and the process proceeds to step s7.

At step s7, a temperature setting switch (+) 5
11 is detected, and the pressing is detected (YES).
And proceeds to step s8, and if no pressure is detected (N
O), proceed to step s9. In step s8, the display of the Lo side determination level is changed from 12 mV (X) to 14 mV (Y) →
16mV (Z) → 12mV (X)... Returning to the switching step s7. At step s9, the temperature setting switch (-)
The press detection of 512 is performed, and the press is detected (YE
S) and proceed to step s10, and if no pressure is detected (NO), proceed to step s11. In step s10,
The display of the Lo side judgment level is changed from 12 mV (X ₂ ) to 14 m
V (Y ₂ ) → 16 mV (Z ₂ ) → 12 mV (X ₂ )
And return to the switching step s7. In step s11, the press of the save switch 513 is detected, and if the press is detected (YES), the process proceeds to step s12. If the press is not detected (NO), the process proceeds to step s13. In step s12, the Hi- and Lo-side misfire determination level values being displayed on the display 581 are written to the E ² PROM 56, and the buzzer 582 is sounded twice, and the flow proceeds to step s14. In step s13, the press of the test switch 550 is detected, and when the press is detected (YES), the process returns to step s4, and when the press is not detected (NO), the step s is performed.
Return to 7.

In step s14, the mode shifts to the proportional valve current adjustment / confirmation mode [first speed, seventh speed], and the flow advances to step s15. In step s15, the display of the proportional valve current is started on the display 581, and the process proceeds to step s16. Step s16
Then, the combustion level is fixed to the first speed, and during the first speed fixing loop (step s16 → NO in step s17 → NO in step s23 → step s16), the first speed pressure adjustment is performed by turning the gas amount adjusting screw. . In step s17, the press of the save switch 513 is detected, and if the press is detected (YES), the process proceeds to step s18, and if not, the process proceeds to step s23. Step s18
Then, the combustion level is fixed at the seventh speed, and the process proceeds to step s19. In step s19, the press of the temperature setting switch (+) 511 is detected, and if the press is detected (YES), the process proceeds to step s20. If the press is not detected (NO),
Proceed to step s21. In step s20, the proportional valve current is increased by 1 mA, and the process returns to step s19. Step s21
Then, the press of the temperature setting switch (-) 512 is detected,
When the pressing is detected (YES), the process proceeds to step s22,
When the pressing is not detected (NO), the process proceeds to step s24. In step s22, the proportional valve current is reduced by 1 mA, and the process returns to step s19. In step s23, the press of the test switch 550 is detected, and the press is detected (YE
S) and return to step s4, and if no pressure is detected (NO), return to step s16. In step s24,
The press of the save switch 17 is detected, and when the press is detected (YES), the process proceeds to step s25A, and when the press is not detected (NO), the process proceeds to step s25B. In step s25A, the buzzer 582 is sounded twice, and the proportional valve current value displayed on the display 581 is set to E ² PRO.
M56 is stored, and the process proceeds to step s26. At step 25B, the press of the test switch 550 is detected, and when the press is detected (YES), the process returns to step s4. When the press is not detected (NO), step s19.
Return to

In step s26, the gas warm air heater R shifts to the fan speed adjustment mode, and proceeds to step s27. In step s27, the combustion level is fixed to the first speed, and the process proceeds to step s28. In step s28, display of the fan current is started, and the flow advances to step s29. Step s29
Then, the press of the temperature setting switch (+) 511 is detected,
When the pressing is detected (YES), the process proceeds to step s30,
When the pressing is not detected (NO), the process proceeds to step s31. In step s30, the fan current is increased by 1 mA, and the process returns to step s29. In step s31, the press of the temperature setting switch (-) 512 is detected, and if the press is detected (YES), the process proceeds to step s32. If the press is not detected (NO), the process proceeds to step s33. Step s3
In 2, the fan current is reduced by 1 mA, and the process returns to step s29. In step s33, the press of the save switch 513 is detected, and when the press is detected (YES), the step s33 is performed.
Proceeding to 35, if not detected (NO), step s3
Proceed to 4. At step s34, the press of the test switch 550 is detected. When the press is detected (YES), the process returns to step s4. When the press is not detected (NO), the process returns to step s29. In step s35, the buzzer 582 sounds twice and the Lo displayed on the display 581 is displayed.
The fan current value is stored in the E ² PROM 56, and step s
Proceed to 36. In step s36, the combustion level is fixed at the seventh speed, and the flow advances to step s37. In step s37, the press of the temperature setting switch (+) 511 is detected, and if the press is detected (YES), the process proceeds to step s38. If the press is not detected (NO), the process proceeds to step s39. In step s38, the fan current is increased by 1 mA, and in step s3
Return to 7. In step s39, the temperature setting switch (-) 5
12 are detected, and the pressing is detected (YES).
And proceeds to step s40, and if no pressure is detected (N
O), and proceed to step s41. In step s40, the fan current is reduced by 1 mA, and the process returns to step s37. In step s41, the press of the save switch 513 is detected,
When the pressing is detected (YES), the process proceeds to step s43,
If not detected (NO), the flow proceeds to step s42. In step s42, the press of the test switch 550 is detected, and if the press is detected (YES), the process returns to step s4. If the press is not detected (NO), step s37 is performed.
Return to It causes the buzzer 582 twice at step s43, and stores the Hi fan current values being displayed on the display unit 581 to E ² PROM56, the flow returns to step s7.

The gas warm air heater R has the following advantages. (A) The assembly of the control unit 5 is completed, the connection state of the two ports of the microcomputer is switched, and E
If you instruct the initialization of ² PROM56, E ² PROM
In 56, the standard misfire determination level on the Lo and Hi sides (12
The standard data corresponding to the standard proportional valve current value (200 mA) at the 7th speed combustion level and the standard fan current values (100 mA, 900 mA) at the 1st speed and 7th speed are automatically written. When the assembling of the gas warm air heater R is completed and the heating operation is started, the readout circuit 562 reads out each data written in the E ² PROM 56, and the misfire detection circuit 54, the proportional valve drive circuit 52, and the fan control The circuit 53 includes a standard misfire determination level (12 mV, 12 mV) and a standard fan current value (10 mV).
0 mA, 900 mA). For this reason, the misfire detection circuit 54, the proportional valve drive circuit 52, and the fan control circuit 53 operate based on the adjustment value close to the regular value. The machine R operates stably.

(I) When the test switch 550 and the write switch 555 are simultaneously pressed (YES in step s5), the mode is first shifted to the misfire determination level adjustment and storage mode, and the save switch 513 is pressed (steps s11, 1).
The YES) at 7,24,33,41, writes that type of an adjustment value to the E ² PRPM56, sequentially, proportional valve current adjustment and storage mode [one-speed pressure control, seven-speed pressure control] → fan speed Adjustment and storage mode [Lo side, Hi
Side]. When the test switch 550 is pressed during each adjustment and storage mode, the adjustment value is changed to E ² RPM.
Normal operation mode without writing to 56 (step s4)
You can go back to Therefore, the adjustment and writing operation can be easily performed, and writing of an incorrect adjustment value can be prevented.

(C) The gas hot air heater R performs the data for the Lo / Hi side misfire determination level for each combustion level group of 1st to 2nd speed, 3rd speed to 8th speed, and 7th speed at the time of each adjustment and writing. The data relating to the proportional valve current and the data relating to the fan current at the 1st speed and 7th speed are stored in the E ² PROM 56, and the readout circuit 562 reads out these data, and the misfire detection circuit 54, the proportional valve drive circuit 52, and the fan control circuit 53, a Lo / Hi side misfire determination level, a proportional valve current at the seventh speed, and a fan current at the first speed and the seventh speed. In the E ² PROM 56, even if a mechanical shock such as vibration is applied to the control unit 5, each data does not fluctuate structurally. Therefore, the reliability of the misfire determination by the misfire detection circuit 54, the control of the proportional valve current by the proportional valve drive circuit 52, and the control of the convection fan 4 by the fan control circuit 53 are excellent.

(E) Since the test switch 550 is provided on the substrate of the control unit 5 which is not touched by the user, the test switch 550 does not shift to the adjustment / write mode, and the user erroneously determines Lo. The Hi side misfire determination level, the proportional valve current at the seventh speed, and the fan current at the first speed and the seventh speed are not changed.

In each adjustment mode, a save switch 513, a temperature setting switch (+) (-) 511, and a temperature setting switch (+) provided on an operation panel located on the upper surface of the heater housing 6 are provided.
12 is used to adjust and store the Lo-side / Hi-side misfire determination level, the proportional valve current at the seventh speed, and the fan adjustment current at the first speed and the seventh speed. The number of switches that need to be arranged can be reduced (one switch is sufficient), and parts costs can be saved.

(F) Since the initialization of the E ² PROM 56 is performed using two ports of the microcomputer instead of the tact switch, there is no possibility that data is erased by mistake after the adjustment operation.

The present invention includes the following embodiments in addition to the above embodiment. a. A configuration may be adopted in which a reset switch is provided, and when the switch is pressed, a standard value is written in the E ² PROM 56. b. may be used E ² PROM56 such as MNOS shape or MAOS form. c. In the above embodiment, the integer value data is stored in the E ² PROM 56, but a decimal value may be stored. d. Automatic increment and decrement functions are added to the temperature setting switches (+) (-) 511 and 512 when the proportional valve current is adjusted and written in the seventh speed and the fan Lo and Hi speeds are written in the first and seventh speeds. Adjustment time can be reduced. For example, if the pressing state continues for more than 0.2 seconds, the fan current or the proportional valve current is increased or decreased by ± 1 mA at 0.1 second intervals.

[Brief description of the drawings]

FIG. 1 is a structural diagram of a gas hot air heater according to one embodiment of the present invention.

FIG. 2 is a block diagram of the gas warm air heater.

FIG. 3 is a flowchart illustrating the operation of the gas warm air heater.

FIG. 4 is a flowchart illustrating the operation of the gas warm air heater.

FIG. 5 is a flowchart illustrating the operation of the gas warm air heater.

FIG. 6 is a flowchart illustrating the operation of the gas warm air heater.

FIG. 7 is a flowchart illustrating the operation of the gas warm air heater.

[Explanation of symbols]

R Gas hot air heater (combustion device) 3 Proportional valve (combustion actuator) 4 Convection fan (combustion actuator) 52 Proportional valve drive circuit (control circuit) 53 Fan control circuit (control circuit) 54 Misfire detection circuit (safety circuit) ) 56 E ² ROM (semiconductor non-volatile memory) 511 Temperature setting switch (+) (adjusting means) 512 Temperature setting switch (-) (adjusting means) 561 Write circuit 562 Read circuit

Claims (1)

(57) [Claims] (1) A safety circuit and a combustion actuator are controlled.
Data related to control circuits to be controlled can be electrically rewritten
A semiconductor nonvolatile memory that can be stored in the semiconductor nonvolatile memory, and data stored in the semiconductor nonvolatile memory.
And convert it to an adjusted value of the safety circuit or the control circuit.
In a combustion apparatus provided with a read circuit that, the semiconductor plurality of standard values previously determined as the standard data
Initialization setting to perform initialization operation to write to nonvolatile memory
Means, adjusting means for adjusting the standard value to obtain the adjustment value, and converting the plurality of adjustment values adjusted by the adjusting means into data.
And a write circuit for storing the data in the semiconductor nonvolatile memory.
And when the initialization is instructed , the initialization setting means performs the initialization.
An operation is performed, and after the initialization operation is completed, the reading circuit
Read multiple standard data from memory and convert to standard value
And the safety circuit and the control based on the standard value.
Activate the control circuit, and in this state, adjust the plurality of standard values sequentially by the adjusting means.
The data corresponding to the adjusted value to the write circuit.
A combustion apparatus, wherein the combustion apparatus is stored in the semiconductor nonvolatile memory .