JP3139257B2 - Combustion control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil fan heater, FF
The present invention relates to a combustion control device such as a hot air heater.

[0002]

2. Description of the Related Art Generally, combustion devices such as oil fan heaters and FF hot air heaters are provided with various safety devices for stopping the operation of the devices when there is an abnormality in combustion or the like. However, if the equipment has been used for a long time, it is expected that the operation of the equipment cannot be stopped even if an abnormality occurs due to deterioration of the parts of the various safety devices as well as deterioration of the combustion part.

Therefore, in order to prepare for such a situation, when a device is used for a certain period of time, a warning is drawn in an instruction manual or the like so that parts of a safety device such as a frame rod are replaced. However, the user cannot accurately grasp the certain period, and may continue to use it without replacing parts.

Therefore, as shown in FIG. 3, when the operation switch 31 is turned on, the relay 32 is energized, and the chronological timer 33 is energized to accumulate the time. When the time exceeds the set value. Aging time contact 33-
In some cases, the subsequent operations cannot be performed after a is turned off.

[0005]

However, since the above conventional clock device measures only the time during which the operation switch 31 is turned on, an accurate operation cannot be expected.
That is, recent combustion equipment stops the combustion in accordance with the room temperature even if the operation switch is turned on, or even if the operation switch is not turned on to shorten the ignition time, the fuel vaporization heater of the combustion part is not turned on. The operation switch and the operation of the combustion unit do not always match, so even if only the time when the operation switch is turned on is measured, the deterioration of the combustion unit and It is not possible to accurately grasp the deterioration of parts of the safety device.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to enable timely inspection and maintenance suitable for the operating condition of a combustion section.

[0007]

According to the present invention, in order to achieve the above object , the temperature of a fuel vaporizer having a vaporizing heater is reduced.
Measures the time when the temperature has exceeded the predetermined value and stores the total
A heater measurement time storage section is provided for storing the heater measurement time.
When the storage time of the storage unit exceeds a predetermined value, the driving operation is forcibly performed.
The configuration is such that an operation stop unit for stopping is provided .

[0008]

According to the present invention, there is provided a vaporizing heater having the above structure.
The accumulated time during which the temperature of the fuel vaporizer
Since it is used as a criterion for component deterioration, the degree of deterioration of components degraded by combustion can be accurately grasped, and timely inspection and maintenance can be performed in accordance with the operation status of the combustion unit.

[0009]

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

In FIG. 1, reference numeral 1 denotes an operation command unit for instructing operation, and reference numeral 2 denotes an operation control unit for controlling operation in response to the operation command. Reference numeral 3 denotes a pump control unit that controls a pump in response to a command from the operation control unit 2, and 4 denotes a pump that supplies fuel to a combustion unit (not shown). Reference numeral 5 denotes a pump operation time storage unit that stores the pump operation time by counting the number of pulses of the pump 4, and 6 indicates whether the pump operation time has exceeded the predetermined time depending on whether the number of pulses has exceeded a predetermined value. Is an operation time determination unit that determines

Reference numeral 7 denotes a heater control unit for controlling a heater in response to a command from the operation control unit 2, reference numeral 8 denotes a vaporization heater for heating a fuel vaporizer in the combustion unit, and reference numeral 9 denotes a burner thermistor for detecting its temperature. . Reference numeral 10 denotes a heater measurement time storage unit that measures and stores the time when the temperature output from the burner thermistor 9 is equal to or longer than a predetermined temperature output, and 11 is a heater time determination unit that determines whether the heater measurement time is equal to or longer than a predetermined time. It is. Reference numeral 12 denotes an operation stop unit.

The number of pulses is stored in the pump operation time storage section 5 even when the outlet is disconnected, and the counter is started again when the next pulse 4 of the pump is input. In addition, the measured time is stored in the heater time storage unit 10 in the same manner as described above even when the outlet is disconnected, and when the temperature of the heater 8 becomes equal to or higher than the predetermined temperature, a new measured time is added to the measured time again. It is composed.

Next, the operation of the device configured as described above will be described with reference to the flow chart of FIG. The device is powered on,
When an operation command is input from the operation command unit 1 and the control unit is started,
The device control is started according to the procedure of the control program shown in the flowchart of FIG.

First, in step 21, it is confirmed whether or not the edge of the pump pulse has changed from off to on. If the pump pulse has changed from off to on, the process proceeds to step 22; Step 2
In step 2, the pulse counter in the pump pulse count storage unit is incremented. In step 23, the count number of the pulse counter becomes a predetermined value A (for example, 6000 hours = 0c).
dfe600HEX).
If it does not exceed the predetermined value A, the routine proceeds to step 24, and if it does, the routine proceeds to step 27 to stop the combustion.

In step 24, it is determined whether or not the temperature of the burner thermistor is equal to or higher than a predetermined temperature B. If the temperature is equal to or higher than the predetermined temperature B, the process proceeds to step 25; In step 25, the counter of the heater measurement time storage unit 10 is incremented. In step 26, the value of the counter is set to a value C corresponding to a predetermined time,
(E.g., 4000 hours = 68 cca3 deHEX) is determined, and a value C corresponding to the predetermined time is determined.
If it does not exceed the value C, the process returns to step 21, and if it exceeds the value C, the process proceeds to step 27 to stop the combustion.

The above steps 21 to 26 are repeatedly performed. Thus, according to this configuration, the pump operation time based on the number of pump pulses during combustion and the heater 8
By measuring the time above the predetermined temperature, it is possible to judge the actual operation state of the combustion section, and it is possible to perform a timely inspection and maintenance.

The above-described embodiment is shown as an example of the present invention, and any structure may be used as long as the objects and effects of the present invention are achieved. A configuration in which the operation is stopped or a configuration in which the operation is stopped for a time measured only for a time equal to or higher than the predetermined temperature of the heater may be used, and in combination with the heater energization time, the ON time of the heater is measured, and the number of ON / OFF times is counted. The warning may be issued while the combustion is stopped as it is, or the combustion may be stopped several hours after the warning sound or the warning display.

[0018]

As described above, the combustion control device of the present invention
By performing aging according to the net operation of the combustion section, deterioration of the combustion section can be accurately determined, and the combustion device is forcibly stopped to perform timely inspection and maintenance, thereby improving safety.

Further, in the apparatus in which combustion is stopped by measuring the time when the temperature of the heater is equal to or higher than a predetermined temperature, it is possible to accurately cope with component deterioration due to heating of the heater during non-combustion.・ Maintenance becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram of a combustion control device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the embodiment.

FIG. 3 is a circuit diagram of a combustion control device showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation command part 2 Operation control part 3 Pump control part 4 Fuel supply pump 5 Pump operation time storage part 7 Heater control part 10 Heater measurement time storage part 12 Operation stop part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-291414 (JP, A) JP-A-4-62318 (JP, A) JP-A-5-256446 (JP, A) JP-A-5-256446 272754 (JP, A) JP-A-6-294514 (JP, A) JP-A-2-187518 (JP, A) JP-A-1-111937 (JP, U) (58) Fields investigated (Int. ⁷ , DB name) F23N 5/24 101 F23N 5/26 101 F24H 3/02 301

Claims (1)

(57) [Claims] 1. A heater for controlling the operation command section, and a driving control unit for driving the operation command from the operation command unit, the energization of the fuel vaporization heater by a command of the operation control unit
A control unit and a temperature of a fuel vaporizer having the vaporization heater.
Measures the time when the temperature exceeds the specified temperature and stores the total
Heater measurement time storage unit for storing the heater measurement time
A combustion stop device for forcibly stopping a drive operation by the drive control unit when a storage time of the unit exceeds a predetermined value.