JP2002195556A - Method of controlling automatic fire extinguisher against earthquake, and controller, and burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control method for an automatic fire extinguisher against earthquake which never detects some large shock such as the time when a ball hits on it, etc., and stops a burner completely by mistake. SOLUTION: Combustion is stopped by the judgment of the rocking of an apparatus concerned from the operational situation of a seismoscope, and when it does not judge rocking again within the second monitoring time T2 besides being after the first monitoring time T1 set in advance from the judgment of rocking, the combustion stoppage is canceled and combustion is reopened, and when it judges rocking again, the earthquake detection is settled, and the combustion stoppage is kept. It follows that unless the rocking of the apparatus continues for the first monitoring time T1 or over continuously or intermittently, the earthquake detection is not settled, so the complete stoppage of the burner in the case where the shock of a ball or the like adds to the apparatus can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method and a control apparatus for an anti-seismic automatic fire extinguishing system, and a combustor.

[0002]

2. Description of the Related Art A conventional anti-seismic automatic fire extinguishing system for a combustor uses an automatic reset type seismic sensor as disclosed in Japanese Patent Application Laid-Open No. H10-54554. The automatic reset type seismic sensor is a type as disclosed in Japanese Patent Application Laid-Open No. 08-145777 in which a steel ball is moved by swinging and a contact is opened. When the contact is opened, power to the combustor is shut off. Then stop burning.

As shown in FIG. 6, this type of anti-seismic automatic fire extinguishing device is controlled by a control device 12 so as not to stop the combustion by a small vibration as if walking near the combustor 11. That is, the power storage means 14 (capacitor) is arranged in parallel with the relay coil 13a of the self-holding relay 13, and when the seismic sensor 15 operates and its contact 15a is opened, the power storage means is replaced by the power supply 16. 14 supplies electricity to the relay coil 13a, keeps the voltage of the relay coil 13a at or above the operating voltage for a set time T, and then drops below the operating voltage to turn off the self-holding relay 13. Therefore, if the open time t of the contact 15a is shorter than the set time T (about 20 mS), the self-holding relay 13 is not turned off, and the combustion of the combustor 11 is not stopped. 17
Is a power source of the combustor 11.

[0004] In some cases, the microcomputer monitors the open time t of the contact 15a, for example, the voltage between the contacts, and stops the combustion of the combustor 11 when the time exceeds the set time T.

[0005]

However, in the conventional anti-seismic automatic fire extinguisher, although it can be prevented from malfunctioning due to the influence of vibration or noise as small as walking near the combustor 11 as described above, it is particularly suitable for outdoor use. When installed in
When a certain large impact is applied, such as when a play equipment such as a ball hits, an animal such as a cat or a dog touches, or snow falls from the roof, the contact 15a of the seismic sensor 15 is applied for one to several seconds. Because it repeatedly opens and closes, it is erroneously detected as an earthquake,
There was a problem that the combustor 11 was stopped.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem, and a method for controlling an automatic anti-seismic fire extinguishing system which does not completely stop combustion by erroneously detecting a somewhat large impact such as when a ball hits an earthquake. It is an object to provide a control device and a combustor.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention determines the swing of the device from the operation state of the automatic reset type seismic sensor, stops the combustion, and sets a predetermined monitoring time. If the oscillation of the device is not determined again within the further monitoring time after the lapse, combustion is restarted, and if the oscillation of the device is determined again, the earthquake detection is determined and the combustion is not restarted, Since the earthquake detection is not determined unless the swing of the device continues for the first monitoring time or more, it is possible to prevent the combustor from completely stopping due to malfunction due to a malfunction when a large impact is applied to the device.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a control method for an anti-seismic fire extinguisher equipped with an automatic reset type seismic sensor and installed in a combustor, wherein the operating condition of the seismic sensor is described. The combustion is stopped by judging the swing of the device, and the combustion is stopped after the first monitoring time set in advance from the judgment of the swing and the swing is not judged again within the second monitoring time. The system is characterized in that the stop is released, the combustion is restarted, and when the oscillation is determined again, the earthquake detection is determined and the combustion stop is maintained, and the oscillation of the device is continuously or intermittently performed for the first monitoring time. Otherwise, the earthquake detection will not be determined, and it is possible to prevent the combustion from completely stopping due to a malfunction when a large impact is applied to the device. The determination of the swing is performed based on a predetermined operation time of the seismic device, the number of operations, or a combination of the operation time and the number of operations.

According to a second aspect of the present invention, in the control method of the automatic anti-seismic fire extinguisher according to the first aspect, when the seismic sensor has been continuously operated for a predetermined time within the first monitoring time, the earthquake detection is determined and the combustion is stopped. The combustion can be stopped quickly when the equipment falls down, and the user can be notified by a display device or the like.

According to a third aspect of the present invention, there is provided a control device for an anti-seismic automatic fire extinguishing apparatus configured to perform the method according to the first or second aspect. According to a fourth aspect of the present invention, there is provided a combustor including an anti-seismic automatic fire extinguishing device having an automatic reset type seismic sensor and a control device according to the third aspect.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a configuration diagram of a combustor provided with an anti-seismic automatic fire extinguisher in which a control method according to an embodiment of the present invention is implemented.

The automatic anti-seismic fire extinguisher 1 has an automatic reset type seismic sensor 2 as described above, and a resistor 3 connected in series to a contact 2a of the seismic sensor 2, and detects the voltage across the resistor 3. The microcomputer 4 is configured to input data to the microcomputer 4, and the microcomputer 4 is connected to the combustor 5. The combustor 5 is provided with a display device 6 for displaying the operation status of the device.

The microcomputer 4 has voltage detecting means and time measuring means (not shown). If the voltage between both ends of the resistor 3 is 0.5 V or more, the contact 2a of the seismic sensor 2
Is determined to be in the closed state, and the voltage across the resistor 3 is 0.5
If it is less than V, it is determined that the contact 2a of the seismic sensor 2 is in the open state, and if the open time of the contact 2a is equal to or longer than t1, it is determined that the device has rocked and the combustion of the combustor 1 is stopped. Also t1
Within the time T1 after the lapse and the time T2 after the lapse of the time T1,
Based on the opening times t1 and t4, it is determined whether to stop the combustion or restart the combustion. t1, t4
(T1 <t4 <T1), T1 and T2 are preset times.

FIG. 2 shows the first operation of the automatic anti-seismic fire extinguishing system.
6 is a timing chart of FIG. Contact A of seismic sensor 2 at point A
Although a was opened, the open time is less than t1, and it is not determined that the device has rocked, and the combustion of the combustor 5 is maintained.

At the point B, the contact 2a of the seismic sensor 2 is opened, and the open time is longer than t1, so that it is determined that the device swings and the combustor 5 is stopped. After that, the contact 2a is repeatedly opened, and since the opening time t1 or more is detected even within T2 after the passage of T1, it is determined that the device is oscillating due to the earthquake, the earthquake detection is determined, and the user is notified. “Earthquake detection” is displayed on the display device 6.

After confirming the detection of the earthquake, other operation switches are not accepted until the operation stop switch is pressed, and the combustor 5 is stopped.
Combustion does not resume. If the operation stop switch is pressed in this state, the display of the earthquake detection is stopped, the operation switch can be accepted, and then the operation is restarted when the operation start switch is pressed.

FIG. 3 is a second timing chart showing the operation of the anti-seismic automatic fire extinguisher. As in the operation shown in FIG. 2, when the opening time (<t1) of the contact 2a of the seismic sensor 2 is detected at the point A, the combustion of the combustor 5 is maintained, and at the point B, the contact 2
When the open time of “a” (≧ t1) is detected, the combustor 5 is stopped.

After the time t1, the opening time of the contact 2a (≧ t1) is detected again at the point C during the time T1, but the opening of the contact 2a is not detected during the time T2. Combustion of the combustor 5 is restarted.

In the operation shown in FIGS. 2 and 3, the combustion is once stopped by the swing of t1 or more, and after the lapse of T1, the time t2 is again returned during T2.
Since combustion restarts when one or more swings do not occur, it is possible to prevent the combustion from being completely stopped due to a malfunction when a relatively large impact is applied to the device. When the earthquake detection is confirmed, "earthquake detection" is displayed, so that the user surely presses the operation stop switch.

FIG. 4 is a third view showing the operation of the anti-seismic automatic fire extinguishing system.
6 is a timing chart of FIG. Similar to the operation shown in FIG. 2, when the opening time (<t1) of the contact 2a of the seismic sensor 2 is detected at the point A, the combustion of the combustor 5 is maintained, and at the point B, the contact 2a
When the open time (≧ t1) is detected, the combustor 5 is stopped.

The open state of the contact 2a continues after the elapse of t1, and when the open time reaches t4 (<T1), it is determined that the device is oscillating due to the earthquake, and the detection of the earthquake is determined. Indicates “earthquake detection”.

The open state of the contact 2a continues after the lapse of t1, and when the open time reaches t4 (<T1), it is determined that the device is oscillating due to the earthquake, and the detection of the earthquake is determined. Indicates “earthquake detection”.

FIG. 5 is a fourth diagram showing the operation of the automatic anti-seismic fire extinguishing system.
6 is a timing chart of FIG. Similar to the operation shown in FIG. 2, when the opening time (<t1) of the contact 2a of the seismic sensor 2 is detected at the point A, the combustion of the combustor 5 is maintained, and at the point B, the contact 2a
When the open time (≧ t1) is detected, the combustor 5 is stopped.

After the lapse of t1, the contact 2a is again opened (≧ t1) at the point D during the T1, and the open time is t4 (<T
At the point of reaching 1), it is determined that the device is rocking due to the earthquake, and the earthquake detection is determined, and "Earthquake detection" is displayed on the display device.

The operation shown in FIGS. 4 and 5 corresponds to the case where the contact 2a is kept open due to a fall of the device or the like, and promptly notifies the user. The complete stoppage of combustion due to a malfunction can be prevented as in the operation shown in FIGS.

In the above embodiment, t1 = 0.
Although 1 second, t4 = 3 seconds, T1 = 10 seconds, and T2 = 5 seconds, an optimal time may be set according to the characteristics of the seismic sensor 2 and the equipment.

The condition for judging that the device is oscillating is, in addition to the above, the time t3 (<T1, T2).
One or more open states occur N times or continuously t
2 (<T3) or more.
During the time period (<T1, T2), the open state for the time t1 or more and the closed state for the time t3 or more occur N times or more, or the open state for the continuous t2 (<T3) or more. You may change according to the characteristics of the seismic device 2 and apparatus.

The same effect can be obtained by using a combination of a power storage means and a self-holding relay or a combination of a timer instead of determining the times t1, t4, T1, and T2 by the microcomputer 4.

In the above description, the display of the earthquake detection is performed only when the earthquake detection is confirmed. However, when the combustion is restarted without the earthquake detection being determined, the display content is changed.
For example, it may be displayed by turning on the light when the earthquake detection is confirmed, and blinking when not confirmed.

[0030]

As described above, according to the present invention, the swing of the equipment is determined based on the operation state of the automatic reset type seismic sensor, and the combustion of the combustor is temporarily stopped. If the combustion is not continued for longer than the monitoring time, the combustion stop is released and the combustion restarts automatically, so it is possible to prevent a shock other than an earthquake from being erroneously detected as an earthquake and prevent the combustion from completely stopping. .

Further, when the seismic sensor has been continuously operated for a predetermined time, the earthquake detection is determined and the combustion is not restarted.
The fire can be extinguished quickly and reliably when the equipment falls down.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a combustor provided with an anti-seismic automatic fire extinguisher in which a control method according to an embodiment of the present invention is implemented.

FIG. 2 is a first timing chart showing the operation of the anti-seismic automatic fire extinguisher of FIG. 1;

FIG. 3 is a second timing chart showing the operation of the anti-seismic automatic fire extinguisher of FIG. 1;

FIG. 4 is a third timing chart showing the operation of the anti-seismic automatic fire extinguisher of FIG. 1;

FIG. 5 is a fourth timing chart showing the operation of the anti-seismic automatic fire extinguisher of FIG. 1;

FIG. 6 is a configuration diagram of a combustor provided with a conventional anti-seismic automatic fire extinguishing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anti-seismic automatic fire extinguishing device 2 Seismic sensor 2a Contact 3 Resistance 4 Microcomputer 5 Combustor T1 First monitoring time T2 Second monitoring time

Claims (4)

[Claims] 1. A method of controlling an anti-seismic automatic fire extinguisher having an automatic reset type seismic sensor and installed in a combustor, wherein a swing of the device is determined from an operation state of the seismic sensor. When the combustion is stopped and the oscillation is determined and the oscillation is not determined again after the preset first monitoring time has elapsed and the oscillation has not been determined again within the second monitoring time, the combustion stop is released and the combustion is restarted. A method for controlling an automatic anti-seismic fire extinguishing device, characterized in that, when swinging is determined again, earthquake detection is determined and combustion is stopped. 2. The control method for an automatic fire extinguishing system according to claim 1, wherein when the seismic device is continuously operated for a predetermined time within the first monitoring time, the detection of the earthquake is determined and the combustion is stopped. . 3. A control device for an anti-seismic automatic fire extinguishing device configured to carry out the method according to claim 1. 4. A combustor comprising an anti-seismic automatic fire extinguishing device having an automatic reset type seismic sensor and the control device according to claim 3.