JPH11351568A - Safety device for burning appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stop combustion forcibly at the time of abnormal operation where igniting operation of a burning appliance with sensor is performed continuously. SOLUTION: If igniting operation is performed continuously at a combusting section 8 with no sensor during combustion at a combusting section 4 with sensor, or a predetermined time has elapsed, or igniting operation is performed within a predetermined time after stopping operation at the combusting section 8 with no sensor, it is regarded as continuous ignition and combustion at the combusting section 4 is stopped forcibly upon elapsing a predetermined time. Even when the combusting section 4 with sensor dies out and the die-out level can not be determined due to noise wave generated at the time of igniting the combusting section 8 with no sensor, combustion can be stopped surely. Consequently, safety of a burning appliance can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a combustion apparatus such as a gas table used for home use.

[0002]

2. Description of the Related Art A conventional safety device for a combustion apparatus will be described with reference to FIG. In FIG. 6, reference numeral 13 denotes a gas table generally used at home. For example, the combustion unit 14,
In a gas table having 16 and 17,
When the combustion unit 14 with the sensor is burned, the sensor 15
The temperature level detected by the microcomputer is read from the port of the microcomputer, and if the data read as a countermeasure against noise radio waves is continuously at the ignition level for a predetermined predetermined number of times, the ignition is determined, and the predetermined number of continuous times is determined. If the ignition level has not been reached, the ignition or the extinguishing is determined.

[0003]

However, in the above-described conventional combustion apparatus, if the abnormal operation of continuously igniting the other combustion units 16 and 17 is performed during the combustion of the sensor-equipped combustion unit 14, the ignition operation is performed at the time of ignition. The data read from the microcomputer port by the generated noise radio wave is shown in FIG.
As shown in Fig. 5, there is a problem that the ignition level becomes higher than the ignition level, and it becomes impossible to detect the non-ignition or the extinguishing of the combustion part 14 with the sensor.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a combustion unit with a sensor, in which the ignition operation of another combustion unit is continuously performed during a combustion period and a predetermined time or more elapses. If the ignition operation is performed within a predetermined period of time after the operation of the combustion unit is stopped, it is regarded as continuous ignition, and if the predetermined time period or more has elapsed, the combustion of the combustion unit with the sensor is stopped. It is configured to forcibly stop. According to the present invention, combustion can be reliably stopped even when extinguishment occurs in the sensor-equipped combustion unit and the extinguishing level cannot be determined by noise radio waves generated at the time of the ignition operation of the other combustion units.

[0005]

The invention according to claim 1 comprises a sensor-equipped combustion unit, a sensorless combustion unit, a first counter unit that operates from the start of ignition discharge of the sensorless combustion unit, and a sensor-less combustion unit. The second counter section, which operates from the start of ignition discharge and is initialized when the first counter section outputs an elapsed time of the first counter predetermined time and restarts operation, and the combustion section with the sensor is burning and the When the ignition discharge of the combustion section without the sensor elapses before the 1 counter section outputs the output of the first predetermined time, and the second counter outputs the output of the second counter predetermined time, the combustion of the combustion section with the sensor is performed. By forcibly stopping, safety at the time of abnormal operation can be ensured.

[0006]

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

(Embodiment 1) FIG. 1 is a block diagram showing a configuration of a microcomputer processing in a safety device for a combustion apparatus according to Embodiment 1 of the present invention. In the figure, when a switch unit 1 with a sensor is operated, an ignition unit 3 is operated by a control unit 2 and a combustion unit 4 with a sensor starts burning, and a non-ignition or extinguishment is detected by a sensor 5. At this time, when the sensorless switch unit 6 is operated, the ignition unit 7 is operated by the control unit 2 to start ignition of the sensorless combustion unit 8. At this time, the ignition unit 7 controls the first counter 9, and the first counter 9 controls the second counter 1.
0 is controlled. The second counter 10 controls the safety control unit 11, and the safety control unit 11 controls the combustion unit 4 with the sensor.

FIGS. 2 and 3 are flowcharts showing the continuous re-pressing process and the elapsed time counting process of the stove without sensor according to the present invention, and FIGS. 4 and 5 are time charts showing the operating state of the combustion section of the present invention. is there. S1 in FIG. 2 is a process for confirming the combustion of the stove with a sensor, and determines whether the ignition level in FIG. 4 has been reached. If the ignition level has not been reached as a result of the determination, the process proceeds to S7 and S8, and the stove without sensor is continuously pushed again. S7
Then, the igniter discharge time of the stove without sensor shown in FIG. 5 and the time limit of x time are set. In S8, the elapsed time from the stop of the ignition discharge of all the stoves without sensor shown in FIG. The counter for detecting whether the time has elapsed is cleared.

If the ignition level has been reached, the operation proceeds to S2. At S2, the state of ignition discharge of the stove without sensor is checked. When the operating state of the stove without sensor is ignition discharge, the process proceeds to S3. In S3, a fixed time is set in the elapsed time counter from the stop of the ignition discharge of all the stoves without sensors. This counter is a counter for detecting whether a predetermined time elapses in the time y in FIG. 4, and is a down counter here.

Next, the process proceeds to S4. In S4, it is determined whether the igniter discharge time and x time of the stove without sensor shown in FIG. 5 have passed for a certain time. Here, it is assumed that the setting of the counter for elapse of a predetermined time has been performed in the initial setting in addition to S7. If the predetermined time has not elapsed in S4, the process proceeds to S9, and the process goes out of the stoveless continuous pressing process without a sensor. If the predetermined time has elapsed in S4, the process proceeds to S5, in which the operation of the stove with sensor is stopped, and the process proceeds to S7, S8, where the stove without sensor is continuously pressed again. If the stove operation without sensor is not ignition discharge in S2, the process proceeds to S6. In S6, it is determined whether or not a fixed time has elapsed since the stop of the stove ignition discharge without all the sensors in FIG. 4. If not, the process proceeds to S4. If the y-time has passed for a certain period of time, the process proceeds to S7 and S8 to exit the stoveless continuous pressing process without a sensor.

At S10, it is determined whether the igniter discharge time and x time of the stove without sensor shown in FIG. 5 have reached the time limit. If the time has reached the limit, the process proceeds to S12, and if not, the process proceeds to S11. Proceed to. In S11, the sensorless stove igniter continuous discharge time counter is counted down, and the process proceeds to S12. In S12, it is determined whether or not a certain time has elapsed since the stop of the ignition discharge of all the stoves without sensors shown in FIG. 4, and if the time has elapsed, the process proceeds to S14 to exit the time lapse processing. To go.

If the fixed time has not elapsed, the elapsed time counter from the stop of the ignition discharge of all the stoves without sensors is counted down, and the process proceeds to S14 to exit the time elapse process.

[0013]

As is clear from the above description, the safety device for a combustion machine according to the present invention has the following effects.

If an abnormal operation for continuously igniting the other combustion units is performed during the combustion of the combustion unit with the sensor, the combustion is forcibly stopped, and the combustion is reliably stopped even when the level of misfiring and extinguishing cannot be determined. Since it can be stopped, a safe combustion device can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a safety device for a combustion apparatus according to a first embodiment of the present invention.

FIG. 2 is a flowchart of a continuous re-pressing process of a stove without a sensor of the safety device.

FIG. 3 is a flowchart of an elapsed time process of the apparatus.

FIG. 4 is a time chart showing an operation state of a combustion section of the apparatus at a constant interval.

FIG. 5 is a time chart showing a continuous operation state of a combustion section of the apparatus.

FIG. 6 is an external view of a conventional combustion device.

FIG. 7 is a time chart showing an operation state of a combustion unit of the device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switch part with a sensor 2 Control part 3 Ignition part 4 Combustion part with a sensor 5 Sensor 6 Switch part without a sensor 7 Ignition part 8 Combustion part without a sensor 9 1st counter 10 2nd counter 11 Safety control unit 12 Inside microcomputer 13 Gas table 14 Stove with sensor 15 Sensor 16 Stove without sensor 17 Grill 18 Stove ignition button without sensor 19 Stove ignition button with sensor 20 Grill ignition button

Claims (2)

[Claims] 1. A combustion section with a sensor, a combustion section without a sensor,
The first operation that starts from the start of ignition discharge of the combustion section without sensor
A counter section, a second counter section that operates from the start of ignition discharge of the combustion section without the sensor, is initialized when the first counter section outputs an elapse of a first counter predetermined time, and starts operating again; The ignition discharge of the sensorless combustion section is performed before the first counter section outputs the first predetermined time elapsed output while the combustion section is burning, and the second counter outputs the second counter predetermined time elapsed output. And a safety device for combustion equipment for forcibly stopping the combustion of the combustion unit with the sensor. 2. An apparatus according to claim 1, further comprising an alarm for notifying the stop of combustion.
A safety device for the described combustion equipment.