JPS61135677A - Starting of fire extinguishing equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is applicable to indoor fires such as factories, offices, hazardous materials warehouses, archives, chemical test rooms, electrical rooms, computer rooms or paint booths, and underground parking lots. The purpose of this document is to quickly extinguish indoor fires and ensure the safety of workers, etc., regarding how to start fire extinguishing equipment.

(Prior Art) Conventionally known fire extinguishing equipment for indoor fires can be roughly divided into local release systems and area release systems.

The former works by spraying extinguishing agent directly onto the burning part, while the latter works by filling the entire space in the room to be extinguished with extinguishing agent. The method to be used depends on the size, structure, nature, condition, etc. of the room to be extinguished.

In factories, chemical test rooms, hazardous materials warehouses, archives, electrical rooms, computer rooms, or painting booths, the area-wide release method is generally used, and in this case, Halon 1301 is mainly used.
, carbon dioxide or powder extinguishing agent is used, and the fire is extinguished either manually or by activating an extinguishing agent radiation device linked to a fire detector and filling the entire room to be extinguished with the extinguishing agent. be.

However, when a fire occurs, there is a risk that workers or the like may remain in the room to be extinguished, and in this case, if the fire extinguishing agent emitting device described above is activated at the same time as the fire is detected, the following risks may occur.

In other words, when carbon dioxide is used as a fire extinguishing means, the entire space in the sealed room to be extinguished is filled with carbon dioxide to lower the oxygen concentration and cause the fire to be extinguished by suffocation. Or, you may become confused, or your vision may become blocked, making it difficult to evacuate, and you may gradually find it difficult to breathe.

In addition, when using Halon 1301, the danger of oxygen deficiency is not the same as in the case of carbon dioxide mentioned above, but gas heated to high temperatures by the heat of a fire decomposes and becomes harmful to the human body, so It is important to evacuate people.

Furthermore, when using general dry powder extinguishing agents,
Evacuation was not easy as visibility was completely blocked and the irritation from the powder made it difficult to open the eyes.

In order to protect the lives of workers and others from the above-mentioned dangers, the above-mentioned area-release fire extinguishing agent discharging device is equipped with a delay means that delays its activation for a certain period of time necessary for evacuation. .

In other words, this delay means presets a fixed period of at least 20 seconds or more for the fire detection means, and during this period, extinguishing agent is not emitted, and instead an alarm such as a human voice, bell, siren, etc. is emitted to prevent the fire from entering the room to be extinguished. Efforts are being made to encourage existing workers to evacuate as soon as possible.

(Problems to be solved by the present invention) However, although a certain period of time is set as a delay means for workers to evacuate after a fire occurs, the situation in the room to be extinguished varies and it is not always constant. However, there may be cases where it is not possible to evacuate within the set time. In this case, fire extinguishing agent will be released during the evacuation, and as mentioned above, this will have a serious impact on human life. - If you complete the evacuation earlier than the force setting time, the extinguishing agent will not be released until the delay time has elapsed, so you will have no choice but to watch the combustion accelerate; If there is no fire extinguishing agent present, fire damage will be extremely small if fire extinguishing agent is released early, but the loss of property due to the provision of start delay means can be said to be enormous.

This can be easily understood if we consider the burnout of expensive automatic robots installed in paint booths and the like, which are highly automated due to recent technological innovations.

(Means for Solving the Problems) The present invention was devised as a result of various studies to solve the above-mentioned problems in the conventional technology. If it is confirmed that there is no The sensing means is the same (a fire extinguishing agent injection means facing into the room to be extinguished; an activation means for causing the fire extinguishing agent to eject the extinguishing agent into the room to be extinguished upon detection of a fire by the fire sensing means; and a person in the room to be extinguished. The present invention is characterized in that the above-mentioned activation means is immediately activated only when the absence of a person is confirmed when a fire is detected.

(Example) The specific content of the present invention will be explained below based on an illustrated example. Reference numeral 17 indicates a rough plane of a room to be extinguished, and there is a fire detection sensor in the room to be extinguished. Means 1
A fire extinguishing agent injection means 2 is provided facing into the room to be extinguished.

The fire extinguishing agent injection means 2 is connected to the fire extinguishing agent storage tank 6 via a pipe 2a, and in the process further includes a discharge valve 3 and an actuator 4 of the discharge valve 3;
Activation means are provided consisting of an actuating solenoid 5.

Reference numerals 7 and 8 indicate means for confirming the presence or absence of a person, and in this embodiment, the confirmation means uses a human body sensor 7 and a microprocessor 8, which are provided facing the room to be extinguished. For example, a device for detecting the entry and exit of a person at the entrance/exit portion 17a of the room 17 to be extinguished, for example, a pair of sensors are arranged at positions closer to the inside and closer to the outside of the room to be extinguished, and the sensor on the outside detects a person first. Then, if the sensor inside detects it, it is judged as "entering the room",
In addition to counting the number of people, if the inner sensor detects a person first and then the outer sensor detects the person, it is determined that the person has left the room, and the number of people leaving the room is subtracted from the number of people entering the room memorized above. and becomes zero, only "
Either use a device that generates a signal to determine whether a person is present, or install a mat switch that is activated by the weight of a human body on the floor of the room to be extinguished, and use a device that determines whether a person is present by turning the switch on or off. You can also do this.

Reference numeral 18 indicates a relay, and when the fire detector 1 detects a fire and the human body sensor 7 indicates the presence of a person, the alarm 12 is activated without activating the activation means such as the solenoid 5. is activated to issue an alarm in the room to be extinguished, or when the human body sensor 7 indicates the absence of a person, the activation means is activated immediately.

In addition, in the figure, 9 is a manual activation device provided outside near the entrance/exit portion 17a! 0.11.13 is a contact operated by the operation of relay 18, 12 is an alarm, 14 is a switch,
Reference numeral 15 indicates a fuse, and reference numeral 16 indicates a storage battery with a charging function.

(Function) In the configuration of the embodiment described above, when a fire occurs in the room 17 to be extinguished and the fire detector 1 detects the fire, or when a person discovers the fire first and operates the manual starting device 9, the relay is activated. 18 is activated, the relay 18 is held by the contact 10, and at the same time, the contact 13 becomes a closed circuit and the alarm 12 is activated, and the contact 11 also becomes a closed circuit, and if there is no one in the room to be extinguished, the micropro sensor 8 is activated. Since the relay contact rp inside is a closed circuit, the solenoid 5 and the release valve actuator 4 are activated immediately, the release valve 3 is opened, and the extinguishing agent is injected from the extinguishing agent storage tank 6 through the pipe 2a into the room to be extinguished. Extinguishing agent is released.

In this case, if there is a person in the room to be extinguished, the human body sensor 7 detects the heat rays emitted from the human body, the relay contact rp in the microprocessor 8 becomes an open circuit, and the solenoid 5 does not operate, causing the extinguishing No drug is released, in which case the relay contact 13 is closed and the alarm 12 continues to issue an alarm.

When the workers remaining in the room complete their evacuation outside the room 17 to be extinguished, the relay contact rp in the microprocessor 8 becomes a closed circuit, and the solenoid 5 is immediately activated to start discharging the extinguishing agent.

In this case, a signal is given to the discharge valve actuator 4 from the relay in the microprocessor 8 mentioned above, or a signal is given to the discharge valve actuator 4 from the pipe 2a between the extinguishing agent injection means 2 and the discharge valve 3.
In the middle of the process, a new valve with both opening and closing functions is installed, which is activated by the signal from the relay in the microprocessor 8.
In addition, it is possible to immediately stop the emission if a person enters the room to be extinguished while extinguishing agent is being emitted, and the installation position of the above-mentioned release valve 3 is such that it can be installed directly into the extinguishing agent storage tank 6. It may also be attached to form a container valve type structure.

(Effects of the Invention) Since the present invention is constructed as described above, in the event of an indoor fire, if there are people remaining in the room to be extinguished, the fire extinguishing agent is not emitted until the person evacuates outside. Respect human life and reduce material damage by stopping the vehicle to ensure the safety of people, and if there is no one in the room, immediately start emitting fire extinguishing agents, thereby significantly reducing the spread of property damage. can achieve the ideal of

[Brief explanation of drawings]

1 and 2 are diagrams explaining the principle of the method of the present invention. 1... Fire detection means 2... Fire extinguishing agent injection means 3... Release valve 5...
Solenoid 6... Fire extinguishing agent storage tank 7...
・Human body sensor 8...Microprocessor 9...Manual activation device 12...Alarm device 16...
... Storage battery 17 ... Fire extinguishing target room 18 ...
...Relay inventor Takashi Yanagawa

Claims (4)

[Claims] (1) A fire detection means installed in a room to be extinguished such as a bookshelf, a hazardous materials warehouse, an underground parking lot, etc., a fire extinguishing agent injection means also placed facing into the room to be extinguished, and extinguishing agent is injected based on the fire detection by the fire detection means. It consists of an activation means for emitting extinguishing agent into the room to be extinguished, and a means for confirming the presence or absence of a person in the room to be extinguished. A method for starting a fire extinguishing equipment, characterized by starting the fire extinguishing equipment. (2) In the item set forth in claim 1, the means for confirming the presence or absence of people in the room to be extinguished is a fire extinguishing equipment that uses a mechanism for confirming the entry/exit of people and the number of people installed at the entrance/exit of the fire extinguishing room. starting method. (3) A method for starting a fire extinguishing equipment according to claim 1, wherein the means for confirming the presence or absence of a person in a room to be extinguished uses a human body sensor placed inside the room. (4) A method for starting a fire extinguishing equipment according to claim 1, wherein the means for confirming the presence or absence of a person in the room to be extinguished uses a mat switch installed on the floor of the room.