JPH0449980A - Automatic fire extinguisher for electric fire or the like generated in opening and closing type control board having electric apparatus or operating parts, etc., built therein - Google Patents

Abstract

PURPOSE:To discover early an electric fire and prevent apparatus from damages with automatic quick ire fighting for ensuring a safety operation in plants or the like by providing a means for indicating a fire outbreak signal and a transfer informing signal caused by the detection of a normal or abnormal leaked state of a fire extinguishing agent or by providing other means for detecting visually. CONSTITUTION:An indicating lamp and an ultraviolet ray fire detector 1 opened at a wide angle are provided in an apparatus body 11 having a powerful magnet attached therein and a front panel of a case projectingly provided on the upper part of the body. On a mounting part below the detector are provided a smoke detector 2 and an alarming buzzer, and the respective operating bodies are connected through circuits to a battery power source and control section 4 built in the case. A fire extinguishing agent container 3 filled with halon liquefied gas is erected on an installation plate in the lower end bottom of an apparatus frame, and an ejecting actuator 25 on the upper part of the container is connected through a circuit to said control section. Further, a connection of the transfer informing signal 5 and a mechanism for detecting the ejection or leakage of the fire extinguishing agent are provided. A panel fixing magnet is attached to the back of a body frame, so that the reliability and security of a fire extinguisher are ensured by the indicating action of transfer information of the ejection or leakage of liquid agent in the fire extinguishing container.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is applicable to fires in buildings, including fires in electrical panels,
Of course, it can also be used for general fires such as oil fires.

In particular, it is widely used as a device for early detection and automatic extinguishing of electrical fires that occur in wiring and cables that are shielded from the outside, such as electrical panels, or in complexly incorporated equipment such as relays. .

(Conventional functions and objects of the present invention) Conventionally, fire prevention measures in general buildings of a certain size or larger, structures, industrial plant facilities, factories, etc. designated by the Fire Service Act, etc., include heat detectors and smoke detectors. Fire prevention and extinguishing equipment such as sprinklers and other chemical extinguishing agents are installed, and all of these are legally regulated. However, all of these regulations apply to alarm equipment or fire extinguishing equipment for relatively large indoor spaces of facilities and buildings.

However, when it comes to electrical fires that frequently occur in buildings and industrial facilities, the source of the fire is likely to be from the internal wiring of a large control panel containing electrical equipment installed in a mechanical room or power control room inside the building. In many cases, these devices are complexly built into an electrical panel that is shielded from the outside using a large number of wires and cables. Not only is it difficult to develop an appropriate and effective fire extinguishing system, but it is not subject to fire prevention equipment regulations by law.

The present invention primarily aims to develop a completely new fire extinguishing system that detects electrical fires at an early stage and quickly and automatically extinguishes them to prevent damage to equipment and maintain safe operation of plants and the like.

(Problems to be solved by the present invention) Problems to be solved by the present invention include:

(A) Since a fire occurs inside the open/close type casing, unlike a fire outside, the fire cannot be easily detected, and there is no way to confirm which panel is causing the fire. Moreover, since the initial combustion of electric wires can turn into a smoldering fire due to lack of oxygen, the fire extinguishing system should be equipped with either a flame ultraviolet detector or a smoke detector that works quickly, and a transfer display means for each individual panel. thing.

(B) Even if it is detected by the generation of flame and smoke as a means to prevent malfunction, 1. A fire extinguishing system that discharges extinguishing agent using the inoperable condition due to a preliminary alarm for a certain period of time or less and the activation condition due to a fire alarm for a certain period of time or more as means of determination.

(C) The fire extinguisher shall be equipped with its own power supply, i.e., a battery, and shall have a mounting mechanism using a strong magnet suitable for installation within the enclosure.

(D) Fire extinguishing agents shall be equipped with indicators and other means of detecting irregularities such as leaks in addition to release due to fire.

(E) The main power supply of this device is designed to be operated by a DC9V battery, and even if the voltage of this power supply drops to 5V, it will not interfere with the actuator essential for the function of the sensor and the release of extinguishing agent. In addition, it must have the ability to retain data for at least 6 months.

CF) When installing this device, it should not cause any damage to the equipment already in operation, and the structure should be such that it can be easily and conveniently installed and removed in any space without using complicated tools.

(Means for Solving the Problems) As a means for achieving the above-mentioned problems, the present invention provides an ultraviolet fire detector 1, a smoke detector 2, and a halon extinguishing agent container 3, as shown in the schematic diagram of the device in FIG. , and the automatic control unit 4 of each of the above-mentioned mechanisms, and the transfer signal 5 for the occurrence of a fire and the release of extinguishing agent, and the ultraviolet rays U or smoke S caused by a flame f of 925 mm x 25 mm or more continues for more than one second in the opening/closing type casing. , a preliminary alarm will be issued when a UV fire detector 1 or a smoke detector 2 is detected, and if the UV fire detector is activated for less than 20 seconds continuously, and the smoke detector is activated for less than 30 seconds, each of the above-mentioned actuators will automatically activate the alarm. If the detection due to the generation of ultraviolet rays U or smoke S continues and exceeds the above-mentioned time, a continuous fire alarm will be issued and halon extinguishing gas G will be automatically released into the housing, and the fire will be detected and extinguishing agent The gist of the device of the present invention is a configuration in which the transfer signal 5 of the release or leak is displayed. The main body 11 of the device, an indicator lamp on the front panel of the case protruding from the top, and an ultraviolet fire detector 1 opened at a wide angle.
A smoke detector 2 and an alarm buzzer are installed at the lower mounting part, and the respective actuating bodies are connected to the battery power supply and control unit 4 housed in the case, and installed at the bottom of the lower end of the device base frame. A fire extinguishing agent container 3 filled with liquefied halon gas is set up on a board, and a discharge actuator 25 on the top of the container is connected to the control section, and a transfer signal 5 is connected.
[1] In addition to providing a mechanism for detecting release of extinguishing agent or leakage, the main body frame is equipped with a magnet for fixing the panel on the back side.

(Function of the present invention) The automatic fire extinguishing system of the present invention is as shown in the schematic diagram of Figure 1, and the fire extinguishing system and timing chart automatically controlled by the system of this system are shown in Figures 2 to 2. This will be explained in detail in Figure 5.

In this case, consideration was given to setting the operating conditions and non-operating conditions of this device as a means to ensure the effectiveness of the automatic fire extinguishing function, and setting a means for indicating the release or leakage of liquid in the fire extinguishing container. In detail, the means of notifying an electrical fire that has occurred in the housing cabinet is through the buzzer alarm of the flame detector and smoke detector, and the inactivation condition of the fire extinguisher by the intermittent sounding of the buzzer for a certain period of time and the above-mentioned respective times. The reliability and certainty of the fire extinguishing system is ensured by controlling the operating conditions of the fire extinguisher in the event that the fire extinguisher exceeds the limit, and by indicating the release of liquid in the fire extinguishing container or by indicating the leakage.

In other words, when the fire extinguishing system of the present application is installed in a case measuring 1 m x 1 m x 3 m, a preliminary alarm will be issued when a flame of Φ25 mm x 25 mm or more enters the fire detector for 1 second or more, and then continues to enter the fire detector for 20 seconds or more. If smoke is detected, or if smoke enters the ionization type smoke detector for more than 30 seconds, a fire alarm will be issued and Halon 1301 extinguishing agent will be released in the entire area.

However, if the ultraviolet light detection of the ultraviolet fire detector does not reach 20 seconds or the smoke detection of the smoke detector does not reach 30 seconds, only a preliminary alarm will be sent as a non-operation condition, but no fire alarm will be sent. A control means was set up that automatically resets.

On the other hand, the buzzer signal caused by the fire alarm is transmitted and displayed to the fire prevention center or control room via the transmission circuit (* wire or wireless) shown in Figures 1 and 3. Regarding the fire signal, a series of signals are sent by the reset operation by the staff. or the buzzer circuit stops.

Also, whether the extinguishing agent is normally released due to a fire or abnormality detected due to a leak, etc. is displayed individually at the management center or central control room by a transfer signal.

(Example) Next, the mechanism of the automatic fire extinguishing system of the present invention will be explained with reference to FIGS. 6 and 7.

In the drawings, reference numeral 11 denotes a rectangular device body frame in which a fire extinguishing device is set, which is composed of a metal plate.A rectangular box-shaped case 12 is protruded from the top of the frame, and the front side of the case is designed to absorb ultraviolet rays contained in flames generated during a fire. An ultraviolet fire detector 1 is provided.

The fire detector consists of a light receiving panel that opens to a wide angle of 160° and a detection tube in the center, and is registered No. 152528 developed by the applicant.
Patent No. 4 (Special Publication No. 1-8879) and Registration No. 18
Utility model right No. 13821 (Jitsuhei No. 1-28432)
The control unit 4 built into the case relates to the flame detector device related to
The device of the present invention is controlled together with various mechanisms such as a smoke detector and a fire extinguisher mechanism.

13 is an alarm buzzer for an ultraviolet fire detector provided in the control unit. 14 is a check clamp for the power battery ■, 15
The reset button also serves as a test button. The smoke detector 2 and the alarm buzzer F are mounted on a mounting part 16 provided at the lower part of the case 12, and are attached to the mounting part 20 so as to be openable and closable with a dish-shaped cover 20 pivoted to the mounting part. A large number of air holes 21 formed in a net shape are provided on the lower surface of the cover, and an upper opening 22 of the attached cover is provided.
Allows smoke to freely flow in and out of the sensor 2 between the sensor 2 and the sensor 2.

At the bottom of the main body frame 11, a fire extinguishing agent container 3 is set on a mounting part 23 projecting from the lower end of the frame in the shape of a square, and fixed with a band 24 which can be easily attached and detached with one touch.

The extinguishing agent container 3 is filled with high-pressure liquefied gas Hachiron 1301, and when released, it is released in a gaseous state so that the extinguishing gas does not damage the object to be extinguished.

Reference numeral 25 denotes an actuator for releasing liquefied gas, which is connected to a sensor or the like built in a connecting part 26 between it and the control part 4 through a cord 27.

Reference numeral 28 denotes a magnet for attachment and fixing attached to the back surface of the main body frame 11. Reference numeral 29 is a height adjustment screw at the top and bottom of the main body frame, which is adjusted through a long hole.

30 is a wired or wireless connection terminal for transmitting the fire signal shown in FIGS. 1 and 3 and the signal 5 that reliably indicates the release or leakage of extinguishing agent to a central control room or management center, etc.;
The device of the invention can be incorporated as part of a fire protection management system.

The band 24 of the extinguishing agent container is provided with a detection mechanism for easily checking the amount of extinguishing agent used by a scale display 19 indicating the amount of extinguishing agent by an indicator 18 using a spring 31 provided at the bottom of the extinguisher.

32 is a bracket for mounting the main body of the device and the fire extinguishing gas cylinder. This bracket is intended to prevent the cylinder from tipping over or falling off, and is made loose so that it can move up and down if the overlap is reduced due to a leak in the cylinder.

The automatic fire extinguishing system of the present invention is a lightweight, automated, and compact type that uses the above-mentioned example mechanism as a suitable example! ! This is incorporated into the interior of a large casing housing an electric appliance by a simple mounting means of fixing the magnet 28 attached to the back surface of the main body frame 11 to the side wall or the like of the large casing containing the electrical equipment.

The Naoki embodiments may be implemented with appropriate design changes within the scope of the claims depending on the design.

(Effects of the Present Invention) As described above, the present invention is an effective automatic fire extinguishing system for dealing with electrical fires that occur in a cabinet housing electrical appliances, and which is effective in dealing with electrical fires that occur within a cabinet containing electrical equipment. Also, early damage is caused by either ultraviolet rays or smoke from flames.
Moreover, since it is equipped with a control function that detects the fire with a time difference, it has the effect of extinguishing the fire quickly, easily, and reliably using the halon gas released into the housing.

Therefore, A. It is equipped with an ultraviolet fire detector and a smoke detector according to the special characteristics of electrical fires inside the cabinet, and even in case of a smoke fire inside a sealed cabinet, the fire occurrence signal is activated by the own power supply. There is.

B. Concerning fire alarms, the former is set as an inactive condition and the latter is set as an activated condition to prevent unnecessary fire extinguishing due to malfunction of the fire extinguishing system, and to prevent unnecessary fire extinguishing from occurring due to malfunction of the fire extinguishing system. This has the effect of encouraging maintenance and inspection of equipment to prevent the risk of fire even in the event of an alarm.

In addition, the C1 fire extinguishing system is mechanically compact and easy to install with magnets, and D. It is effective for transmitting fire signals as well as detecting abnormalities such as leaks as well as the normal discharge amount of the Heron extinguishing agent filled in the fire extinguishing container. The present invention can also be provided as a new automatic fire extinguishing system that improves the effectiveness of the system, the certainty of maintenance, and the reliability of the system by using a combination of a signal-based transfer display and a detection means provided within the system.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the device of the present invention, Fig. 2 is an operational system diagram of the device of the present invention, Fig. 3 is also a timing chart diagram, and Fig. 4 is a diagram of the operation system of the device of the present invention.
These figures also show the control block, FIG. 5 shows a front view of the device mechanism, and FIG. 6 shows a side view of the same. In the drawing, l is an ultraviolet fire detector, 2 is a smoke detector, and 3 is a smoke detector.
1 is a fire extinguishing agent container, 4 is a control unit, 5 is a transfer signal, 11 is a device body frame, 12 is a case, 13 is a fire detector buzzer, 15 is a reset push button, 17 is a smoke detector buzzer 18
is an indicator, 19 is a display scale, 21 is an air hole, 22 is an opening, 24 is a band, 25 is a discharge actuator, 2
8 is a magnet, 29 is an adjustment screw, 30 is a connection terminal, 3
1 indicates a spring, 32 indicates a bracket, f indicates fire, U indicates ultraviolet light, S indicates smoke, and ■ indicates a battery.

Claims (2)

[Claims] (1) It consists of an ultraviolet fire detector, a smoke detector, a halon fire extinguishing agent container, an automatic control unit for each of the above mechanisms, and a transfer display means, and is installed in a retractable electric operation panel to prevent fires larger than Φ25 mm x 25 mm. A preliminary alarm will be issued when emitted ultraviolet rays or smoke enters an ultraviolet fire detector or smoke detector for more than one second, and if it is less than 20 seconds for an ultraviolet fire detector or less than 30 seconds for a smoke detector. Each of the actuating bodies is automatically reset controlled, and if ultraviolet light or smoke detection continues and exceeds the respective time periods, a continuous fire alarm is issued and halon extinguishing gas is automatically released into the housing to extinguish the fire, and An open/close type operation equipped with electrical equipment or operating parts, etc., characterized by the provision of a fire signal, a transfer signal display by detecting whether the extinguishing agent is normal or abnormal due to a leak, etc., or other visual detection means. Automatic fire extinguishing system for electrical fires, etc. that occur inside the panel (2) Consists of a device body installed in a retractable electric operation panel, an indicator lamp installed in the front of the upper part, an ultraviolet fire detector that opens at a wide angle, and a smoke detector and alarm buzzer installed at the bottom. In addition to connecting a circuit to the control unit containing each of the actuating bodies, a halon fire extinguishing agent container with a liquid agent filling amount detection mechanism is installed at the bottom of the device body, and a fire extinguishing agent discharge device is installed at the top of the container. An electrical fire that occurs inside a retractable type control panel containing electrical equipment or operating parts, etc., in which an actuator for the device is connected to the control circuit, and a magnet for mounting and fixing is attached to the back of the main body of the device. Automatic fire extinguishing system such as