JPH0519087Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an automatic electric starting circuit for a fire extinguishing system that automatically generates an electric starting force for activating the fire extinguishing system when necessary, and in particular, it relates to an automatic electric starting circuit for a fire extinguishing system that automatically generates an electric starting force to activate the fire extinguishing system when necessary. , relates to an automatic electric start circuit that allows easy confirmation of the service life of its battery power source and consumes less power.

[Prior art]

In order to automatically operate a fire extinguishing system, various starting means have conventionally been used, and an automatic electric starting circuit is used, for example, as an electric starting means for starting a valve opening device of a fire extinguishing system. Now, since fire extinguishing systems are used in emergencies such as when a fire breaks out, they are usually kept inactive for a long period of time. However, when a fire extinguishing action is required, the valve opening device in the main body of the device must be reliably activated to reliably carry out the fire extinguishing action.

[The problem that the idea aims to solve]

Therefore, in order to secure starting power by using battery power for the automatic electric starting circuit that is the operating source of the fire extinguishing system, it is necessary to use battery power even if it is not used for a long time and the battery power is naturally depleted. During this time, it is necessary to always be able to clearly indicate the current battery capacity and to be able to confirm whether there is enough power remaining to achieve the desired activation effect. Moreover, unlike a commercial AC power source, it is necessary to have an electrical circuit configuration that consumes less power. Especially when using a battery power source, it often self-discharges when left unused for a long time, making it impossible to start up when needed. There is an inconvenience that this is not possible.

On the other hand, when using a battery power source, external wiring is not required, so it can be constructed as a portable type that is easy to carry, and there are special constraints on the installation location of the fire extinguisher, such as the distribution end of the power line. It has the advantage that it does not require any conditions such as being present.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an automatic electrical start-up circuit for a fire extinguishing system, which makes it possible to enjoy the advantages of using a battery power source and at the same time eliminate the above-mentioned disadvantages.

[Means to solve the problem]

According to the present invention, in an automatic electric starting circuit for a fire extinguishing device, a current circuit starting from the positive and negative electrodes of a battery power source, and a fire detection circuit connected to the current circuit and closed when a fire is detected and connected to the battery power source. The vessel and
A battery capacity consisting of an integrated energization time meter that is connected in series to a current circuit starting from the battery power supply and that integrates the current energization time, and a shunt circuit that is connected in parallel to the integrated energization time meter for adjusting a set value of battery life time. Continuity between the display circuit, a charging capacitor for starting power connected so that starting current is always supplied through a relay contact that closes a charging side contact in a current circuit starting from the battery power source, and the fire detector. A two-contact relay circuit is connected to the current circuit and includes a reset switch that switches the relay contact to the discharging side contact when the fire is extinguished and returns the relay contact to the charging side when the fire is extinguished. an automatic electric starting circuit for a fire extinguishing system, comprising: a starting device for the fire extinguishing system that conducts with the charging capacitor via the relay contact switched from the charging contact side to the discharging contact side when a detection signal is generated; is provided.

In the above configuration, if a latching relay that consumes excitation power only when energized is used in the two-contact relay circuit, the starting current can be obtained from the power constantly charged in the starting power charging capacitor, and the starting circuit power can be reduced. An automatic electric starting circuit is obtained which has low consumption and can constantly monitor the capacity of the battery power supply by means of the battery capacity display circuit, and therefore can reliably carry out the starting action in the event of a fire outbreak. Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

〔Example〕

The figure is a circuit diagram showing an embodiment of an automatic electric starting circuit for a fire extinguishing system according to the present invention, in which the starting condition signal detector is formed by an open/close activated fire detector of an electric circuit, Further, the starting current shows a configuration used for starting a gas generator for opening a valve of a fire extinguishing system forming a starting device.

Now, in the same figure, the battery power source 1 is formed by a normal commercially available battery, but a long-life lithium battery is preferable. A battery capacity display circuit 3 for displaying the capacity of the battery power source 1 is connected in series with the battery power source 1. The detailed configuration of this battery capacity display circuit 3 will be described later. Further, a two-winding latching relay 4 having two windings 4a and 4b is connected as a relay circuit between both electrodes of the battery power source 1.
A capacitor 10 and a fire detector 2 are connected in series with one of the windings 4a. Further, a capacitor 11 and a manual reset switch 5 are connected in series with the other winding 4b of the two-winding latching relay 4.

Further, between the two electrodes of the battery power source 1, when the starting circuit is activated, a display circuit 6 is installed to indicate the activation by a buzzer or a light-emitting display. (held open) by a series connection. In addition, a battery power supply 1 is connected in parallel with the display circuit 6 and the contact 12.
A capacitor 13 for charging the starting current is connected between both electrodes of the
is coupled together with the other contact 14 (normally held closed) of the two-winding latching relay 4.

The above contact 14 is a two-contact switching type contact,
Normally, one side of the charging contact 14a is closed as described above to form a closed circuit with the battery power source 1 and the capacitor 13, so that the wiring is connected so that the capacitor 13 is charged by the battery power source 1. . The other discharge contact 14b of the contacts 14 is normally held open, and when this discharge contact 14b is closed, a starting current is generated from the starting current charging capacitor 13 to generate gas that forms the starting device of the fire extinguishing system. The gas generator 7 is electrically discharged to start the gas generator 7 electrically. In addition, the above-mentioned two-winding latching relay 4
Further, another contact 15 is disposed in the operating circuit of the alarm shifting device 16, and formed so that the notification signal is shifted from the alarm shifting device 16 to the outside when the main activation circuit is activated as described later. has been done.

Here, the battery capacity display circuit 3 includes a variable resistor 31
and an integrated energization timer 32 which is connected in parallel to this and totals the current consumption time of the battery power source 1, and is commercially available as the integrated energization timer 32 under the trade name "FC timer". A small and lightweight energizing hour meter can be used. In addition,
The variable resistor 31 is provided in order to adjust and set in advance so that the final value (limit value) displayed by the integrated energization time meter 32 tends to reach the lifespan limit of the battery power source 1.

The operation of the automatic electric starting circuit constructed as described above will be explained below.

As is clear from the above description of the configuration, in the automatic electric start circuit of the fire extinguisher of the present invention, the power is always supplied from the battery power supply 1 through the battery capacity display circuit 3.
Further, the capacitor 13 is charged via the closed charging contact 14a of the two-winding latching relay 4. The battery capacity display circuit 3 can constantly monitor whether the battery power source 1 has reached its limit capacity.

Now, as a starting condition, if a fire occurs, the fire detector 2
When the fire detector 2 is detected by
One winding 4a is excited, and the contacts 12, 14, 15 of the relay 4 are switched. That is, the contact 12 is closed, and the contact 14 is closed, and one contact 14a is closed.
is opened, the other contact 14b is closed, and the contact 15 is closed. Therefore, the charge stored in the capacitor 13 is transferred to the gas generator 7 via the contact 14b.
A current is discharged to start the gas generator 7.
At startup, the capacitors 10 and 11 are discharged in advance. At the same time, the display circuit 6 is activated by the closing of the contact 12, a buzzer sounds or a light-emitting display is performed, and the main activation circuit enters the activation state in response to the generation of the activation condition signal, that is, the fire detection signal. Show what happened. Further, the closing of the contact 15 activates the relay device 16, and the occurrence of a fire and the operation of the automatic electric start circuit are notified to the outside, for example, a remote security headquarters.

After the required starting operation has been completed, the manual reset switch 5 is pressed to restore the automatic electric starting circuit. When this manual reset switch 5 is pushed, the winding 4b of the two-winding latching relay 4 is energized, and as a result, the relay 4
Each of the contacts 12, 14, and 15 performs a recovery operation. That is, the contact 12 opens and closes, the contact 14a closes, the contact 14b opens and closes, and the contact 15 opens and closes.

[Effect of idea]

As is clear from the above explanation, an automatic electric start circuit with low power consumption is constructed that uses a latching relay that consumes power only when the power is turned on, and uses a capacitor to withhold the start power from the battery power supply at all times. Moreover, since the power capacity of the battery power supply is configured so that it can be constantly or periodically monitored by the battery capacity display circuit, the fire extinguishing device can be reliably operated in accordance with the fire detection signal. Furthermore,
Since it does not require an external power supply line, there are no special restrictions on installation conditions, and it is simple and does not require wiring work. In addition, the aesthetic appearance can also be maintained.

In addition, in the above explanation, an example was explained in which the gas generator is started by the starting current, but when the starting current is supplied to this gas generator, heat is radiated from the internal heater wire. This heat radiation causes the gas generating agent stored inside to chemically react, and once the reaction starts, it is a well-known pressure gas generator that releases pressurized gas to the outside using its own reaction heat. This pressurized gas can be used to activate a fire extinguishing system and release extinguishing agent into the fire area.

[Brief explanation of the drawing]

The figure is an electrical circuit diagram showing the structure of an embodiment of the automatic electric starting circuit for a fire extinguishing system according to the present invention. 1...Battery power source, 2...Fire detector, 3...Battery capacity display circuit, 4...2-winding latching relay, 5...Manual reset switch, 6...Display circuit, 7...Gas generator , 12, 14, 15... Contact, 13... Capacitor for charging starting current.

Claims (1)

[Claims for Utility Model Registration] In an automatic electrical start-up circuit for a fire extinguishing system, a current circuit starting from the positive and negative electrodes of a battery power source, and a current circuit connected to the current circuit and closed when a fire is detected and connected to the battery power source. A fire detector, an integrated energization time meter that is connected in series to the current circuit starting from the battery power supply and that integrates the current energization time, and a shunt for adjusting the set value of the battery life time that is connected in parallel to the integrated energization time meter. a battery capacity display circuit consisting of a circuit; a charging capacitor for starting power connected so as to be constantly supplied with starting current through a relay contact with a closed charging side contact in a current circuit starting from the battery power source; a two-contact relay circuit installed in the current circuit and incorporating a reset switch that switches the relay contact to the discharging side contact when the fire detector is conductive and returns the relay contact to the charging side when the fire extinguishment is completed; A fire extinguishing system comprising: a fire extinguishing system activation device that is electrically connected to the charging capacitor via the relay contact which is switched from the charging contact side to the discharging contact side when a fire detection signal from a fire detector is generated. Automatic electric start circuit.