JP2018112985A - Fire warning and extinguishing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire warning and fire extinction method, capable of inhibiting fire extinction gas from being sucked by a person by guiding the person in a room at which a fire has occurred to a door of the room before fire extinction is carried out by discharging fire extinction gas.SOLUTION: The fire warning and fire extinction method includes: a warning step for making a person in a room 11 recognize occurrence of a fire by sound and/or light from fire alarms 21-23 provided in the room 11 when the fire alarms 21-23 detect a fire in the room 11; a gas jetting step with odor for jetting gas with stimulus odor doing little harm to a human body from a first to a third gas jetting units 25-27 with odor arranged in a direction from deep in the room 11 toward a door 12; and a fire extinction gas discharge step for discharging fire extinction gas extinguishing a fire subsequent to the gas jetting step.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fire warning and a fire extinguishing method.

In general, when a fire extinguishing gas is radiated to a fire occurrence area using a gas fire extinguishing device, the fire occurrence area is sealed to radiate the fire extinguishing gas. During fire extinguishing, of course, even after the fire is extinguished, the fire occurrence area is filled with fire extinguishing gas and dangerous gas from fire.
It is dangerous if people enter.
As a prior art that can solve such a problem, for example, there is Patent Literature 1.
Patent Document 1 discloses that, in relation to the emission of a fire extinguishing gas, the odorous substance is injected into the fire extinguishing gas radiating pipe to emit the odorous substance in the fire target area.
Further, Patent Document 1 discloses that an odorous substance diffusion device is provided separately from the fire extinguishing gas radiation device, and the odorous material is emitted from the odorous material emission device to the fire target area in relation to the emission of the firefighting gas. Has been.

Japanese Patent Laid-Open No. 06-165839

However, in the technique disclosed in Patent Document 1, since a fire extinguishing gas harmful to the human body has already been radiated at the stage where an odorous substance is diffused in the fire target area, a person who is in the fire target area is toxic gas. There was a risk of smoking.
In addition, if the gas containing the odorous substance is only emitted before the fire-extinguishing gas is emitted, the person in the fire target area cannot be guided to the doorway (door) of the room. There was a fear that people would occur.

  Therefore, the present invention can prevent the person from sucking the fire extinguishing gas by guiding the person in the room where the fire has occurred to the door of the room before extinguishing the fire due to the release of the fire extinguishing gas. The purpose is to provide fire warning and extinguishing methods.

  In order to solve the above-described problem, according to one aspect of the present invention, when a fire alarm provided in a room senses a fire in the room, the sound and / or light from the fire alarm A reporting process for recognizing the occurrence of a fire to a person in the room, and a plurality of odorous gas injection units that cause harm to the human body so that the person moves in the direction from the back of the room toward the door of the room. A fire having an odorous gas injection step of injecting an odorous gas having a little irritating odor, and a fire extinguishing gas release step of releasing a fire extinguishing gas to extinguish the fire after the odorous gas injection step Warning and fire fighting methods are provided.

According to one aspect of the present invention, by using sound and / or light from the sound of a fire alarm, for example, a visually impaired person and / or a hearing impaired person can also fire in a room where he / she is present. Can be recognized.
In addition, after the reporting process, a scented gas with a pungent odor that is less harmful to the human body is injected from a plurality of scented gas injection units so that a person moves from the back of the room toward the door of the room. By doing so, it is possible to guide (guide) the person in the room where the fire occurred from the back side of the room to the door side, so that the person is moved out of the room where the fire occurred from the door. Can do.

After the odorous gas injection process (after the person leaves the room), the fire in the room is extinguished using the fire extinguishing gas, so that the person in the room sucks out the fire extinguishing gas that has a negative effect on the human body. Can be suppressed.
That is, before the fire is extinguished by the discharge of the fire extinguishing gas, it is possible to prevent the person from sucking the fire extinguishing gas by guiding the person in the room where the fire has occurred to the door of the room.

  Further, in the odorous gas injection step, the plurality of odorous gas injection units may inject the odorous gas in order in a direction from the back of the room toward the door.

  In this way, multiple scented gas injection units inject the scented gas in order in the direction from the back of the room toward the door, so that people in the fired room can be It can be easily guided (guided) to the door side.

  Moreover, in the said odorous gas injection process, you may increase the injection amount of the said odorous gas with respect to the direction which goes to the back of the said room from the said door.

  In this way, by increasing the injection amount of the scented gas in the direction from the door toward the back of the room, the back side of the room becomes odorless than the door side. Accordingly, it is possible to guide (guide) a person in the direction from the back of the room toward the door, and to prevent the person from moving to the back side of the room by mistake.

  Moreover, in the said odorous gas injection process, you may increase the quantity of the odor component contained in the said odorous gas with respect to the direction which goes to the back of the said room from the said door.

  Thus, by increasing the amount of the odorous component contained in the odorous gas in the direction from the door toward the back of the room, the odor on the back side of the room becomes more odorous than the door side. Accordingly, it is possible to guide (guide) a person in the direction from the back of the room toward the door, and to prevent the person from moving to the back side of the room by mistake.

  Further, in the odorous gas injection step, the plurality of odorous gas injection units arranged so as to increase in number in the direction from the door toward the back of the room may be used.

In this way, for example, a plurality of odorous gas injections are performed by injecting a scented gas from a plurality of scented gas injection units arranged to increase in number in the direction from the door to the back of the room. When the scented gas of the same injection amount is injected from the part, the odorous gas injection amount is increased in the direction from the door to the back of the room, and the odor is smelled as it goes from the door to the back of the room. It becomes possible to do.
Accordingly, it is possible to guide (guide) a person in the direction from the back of the room toward the door, and to prevent the person from moving to the back side of the room by mistake.

  Moreover, in the said fire extinguishing gas discharge | release process, you may stop injection of the said odorous gas.

  Thus, by stopping the injection of the odorous gas along with the start of the fire extinguishing gas release step, it is possible to suppress the odorous gas from being continuously injected in the fire extinguishing gas release step. Thereby, it can suppress that the gas with smell is consumed wastefully.

  ADVANTAGE OF THE INVENTION According to this invention, before performing fire extinguishing by discharge | emission of fire-extinguishing gas, it can suppress that a person attracts | sucks fire-extinguishing gas by guiding the person in the room where the fire occurred to the room door.

It is a top view which shows typically the fire warning and fire extinguishing apparatus used for the fire warning and fire extinguishing method which concern on the 1st Embodiment of this invention. It is the figure which looked at the side of the some fire alarm provided in the room shown in FIG. 1, the 1st thru | or 3rd smell gas injection part, and the 1st thru | or 3rd fire extinguishing gas discharge | release part. It is a flowchart for demonstrating the fire warning and fire extinguishing method of 1st Embodiment at the time of using the fire warning and fire extinguishing apparatus shown in FIG. It is a figure which shows an example of the timing chart for demonstrating the fire warning and the fire extinguishing method of 1st Embodiment at the time of using the fire warning and fire extinguishing apparatus shown in FIG. It is a figure which shows the timing chart for demonstrating the fire warning and fire extinguishing method which concern on the modification of 1st Embodiment. It is a top view which shows typically the fire warning and fire extinguishing apparatus used for the fire warning and fire extinguishing method which concern on the 2nd Embodiment of this invention. It is the figure which looked at the side of the some fire alarm provided in the room shown in FIG. 6, the 1st thru | or 3rd smelly gas injection part, and the 1st thru | or 3rd fire extinguishing gas discharge | release part. It is a top view which shows typically the fire warning and fire extinguishing apparatus used for the fire warning and fire extinguishing method which concern on the 3rd Embodiment of this invention. It is a top view which shows typically the fire warning and fire extinguishing apparatus used for the fire warning and fire extinguishing method which concern on the 4th Embodiment of this invention.

  Embodiments to which the present invention is applied will be described below in detail with reference to the drawings. The drawings used in the following description are for explaining the configuration of the embodiment of the present invention, and the size, thickness, dimensions, etc. of each part shown in the drawings are the actual fire warning and the dimensional relationship of the fire extinguishing device. May be different.

(First embodiment)
FIG. 1 is a plan view schematically showing a fire warning and a fire extinguishing device used in the fire warning and fire extinguishing method according to the first embodiment of the present invention.
In FIG. 1, from the viewpoint of making it easy to see the arrangement positions of the fire alarms 21 to 23, the first to third odorous gas injection units 25 to 27, and the first to third extinguishing gas discharge units 37 to 39, Illustration of the ceiling of the room in which these are provided (ceiling 11-6 shown in FIG. 2) is omitted.
In FIG. 1, the X and X directions indicate the width direction of the room 11, and the Y and Y directions indicate the depth direction of the room 11 orthogonal to the X and X directions.
Moreover, the A direction shown in FIG. 1 has shown the direction (in other words, the direction which goes to the door 12 from the back of the room 11) which guides the person in the room 11 when a fire occurs.

FIG. 2 is a side view of a plurality of fire alarms, first to third odorous gas injection units, and first to third extinguishing gas discharge units provided in the room shown in FIG.
In FIG. 2, the same components as those of the structure shown in FIG. The Z and Z directions shown in FIG. 2 indicate the height direction of the room 11. In FIG. 2, a plurality of lines drawn below the first to third odorous gas injection units 25 to 27 indicate the odorous gas injected from the first to third odorous gas injection units 25 to 27. Is schematically shown.

First, before explaining the fire warning and fire extinguishing device 20 used in the fire warning and fire extinguishing method according to the first embodiment, referring to FIGS. 1 and 2, a part of the fire warning and fire extinguishing device 20 The structure of the room 11 provided with the door 12 and the door 12 will be sequentially described.
The room 11 includes first and second walls 11-1 and 11-2 arranged opposite to each other, third and fourth walls 11-3 and 11-4 arranged opposite to each other, a floor 11-5, And a ceiling 11-6.
The door 12 is provided on the first wall 11-1. The door 12 is configured to be openable and closable with respect to the first wall 11-1. The door 12 includes a door knob 14 disposed inside the room 11 when the door 12 is closed, and a door knob 15 disposed outside the room 11 when the door 12 is closed and interlocked with the door knob 14. Have.

Next, with reference to FIG.1 and FIG.2, the fire warning and the fire extinguishing apparatus 20 used for the fire warning and the fire extinguishing method which concern on 1st Embodiment are demonstrated.
The fire warning and fire extinguishing device 20 includes fire alarms 21 to 23, first to third smelly gas injection units 25 to 27, a smelly gas supply source 29, a smelly gas supply line 31, and a smell. Gas supply branch lines 32, 33, automatic open / close valves 35, 36-1 to 36-3, 46, first to third fire extinguishing gas discharge sections 37 to 39, a fire extinguishing gas supply source 41, and a fire extinguishing gas A supply line 42 and fire extinguishing gas supply branch lines 43 and 44 are provided.

The fire alarms 21 to 23 are provided on the ceiling surface 11-6a of the ceiling 11-6 that partitions the room 11. The fire alarms 21 to 23 are arranged in the order of the fire alarm 21, the fire alarm 22, and the fire alarm 23 with respect to the direction from the back side of the room 11 toward the door 12.
Therefore, the fire alarm 21 is provided on the farthest side of the room 11 among the three fire alarms (fire alarms 21 to 23).
The fire alarm 23 is provided closest to the door 12 among the three fire alarms (fire alarms 21 to 23). The fire alarm 22 is disposed between the fire alarm 21 and the fire alarm 23.

The fire alarms 21 to 23 are electrically connected to the control unit 48. When the fire alarms 21 to 23 sense that a fire has occurred inside the room 11, they transmit a fire occurrence signal to the control unit 48.
As the fire alarms 21 to 23, for example, a device that makes a person in the room 11 recognize the occurrence of a fire by sound and / or light may be used.
When a person in the room 11 recognizes the occurrence of a fire by sound, for example, an emergency bell, siren, electronic buzzer sound, or the like can be used. Moreover, when making the person in the room 11 recognize the occurrence of a fire with light, it is possible to use, for example, blinking light by a high-intensity LED as the light.
By using the fire alarms 21 to 23 having such a configuration, it is possible to easily recognize that a fire has occurred to a visually impaired person or a hearing impaired person.
As the fire alarms 21 to 23, for example, the same type of fire alarm may be used, or different types of fire alarms may be used.

The 1st thru | or 3rd smelly gas injection parts 25-27 are the 1st smelly gas injection part 25 with respect to the direction which goes to the door 12 from the back side of the room 11, and the 2nd smelly gas injection part 26. The third scented gas injection unit 27 is provided on the ceiling surface 11-6a of the ceiling 11-6 of the room in order.
The first odorous gas injection unit 25 is disposed in the vicinity of the fire alarm 21. The second odorous gas injection unit 26 is disposed in the vicinity of the fire alarm 22. The third odorous gas injection unit 27 is disposed in the vicinity of the fire alarm 23.

The first to third odorous gas injection units 25 to 27 are connected to the odorous gas supply source 29 via the odorous gas supply line 31.
The first to third scented gas injection units 25 to 27 inject scented gas radially in a direction from the ceiling 11-6 of the room 11 to the floor 11-5.
At this time, the first to third scented gas injection units 25 to 27 inject the scented gas with the same injection amount.
As the first to third odorous gas injection units 25 to 27, for example, an injection head can be used.

  The odorous gas supply source 29 is connected to one end of the odorous gas supply line 31. The odorous gas supply source 29 supplies the odorous gas to the first to third odorous gas injection units 25 to 27 via the odorous gas supply line 31.

As the odorous gas, for example, a gas having an irritating odor that is less harmful to the human body or a gas having a burning odor may be used.
In addition, as the odorous gas, for example, a gas having the same weight as air may be used. By using the scented gas having such a weight, it becomes possible to suppress the scented gas from accumulating on the ceiling 11-6 side or the floor 11-5 side, so that the person in the room 11 smells the scented gas. Can smell ingredients.
Examples of odorous components having the above-described characteristics include aromatic alcohols (including phenols), fragrances such as perfumes, fragrances, and fragrances, and unpleasant components such as mercaptan odor (methanethiol) and hydrogen sulfide odor. It can be illustrated.
By using such an odor component, the odor generated by the odorous gas and the odor of the city gas can be clearly differentiated. Thereby, at the time of a fire outbreak, the person in the room 11 can be promptly evacuated.

The other end of the odorous gas supply line 31 is connected to the second odorous gas injection unit 26. The odorous gas supply line 31 is a line for transporting the odorous gas supplied from the odorous gas supply source 29.
The odorous gas supply branch lines 32, 33 are branched from the odorous gas supply line 31 located on the downstream side of the automatic opening / closing valve 35 provided in the odorous gas supply line 31.
The odorous gas supply branch line 32 is connected to the first odorous gas injection unit 25. The odorous gas supply branch line 32 supplies a part of the odorous gas flowing in the odorous gas supply line 31 to the first odorous gas injection unit 25.
The odorous gas supply branch line 33 is connected to the third odorous gas injection unit 27. The odorous gas supply branch line 33 supplies a part of the odorous gas flowing in the odorous gas supply line 31 to the third odorous gas injection unit 27.

The automatic open / close valve 35 is provided in the odorous gas supply line 31 located closer to the odorous gas supply source 29 than the branch position of the odorous gas supply branch lines 32 and 33. The automatic opening / closing valve 35 is electrically connected to the control unit 48, and the opening / closing operation is controlled by the control unit 48.
When the automatic opening / closing valve 35 is opened, the scented gas is supplied to the first to third scented gas injection units 25 to 27. When the automatic opening / closing valve 35 is closed, the supply of the scented gas to the first to third scented gas injection units 25 to 27 is stopped.

The first to third fire extinguishing gas discharge portions 37 to 39 are arranged in the direction from the back side of the room 11 toward the door 12, the first fire extinguishing gas discharge portion 37, the second fire extinguishing gas discharge portion 38, and the third. Are provided on the ceiling surface 11-6a of the ceiling 11-6 in the order of the fire extinguishing gas discharge portions 39.
The first fire extinguishing gas discharge part 37 is arranged in the vicinity of the first odorous gas injection part 25. The second fire extinguishing gas discharge part 38 is arranged in the vicinity of the second odorous gas injection part 26. The third fire extinguishing gas discharge part 39 is arranged in the vicinity of the third odorous gas injection part 27.

  The 1st thru | or 3rd fire extinguishing gas discharge | release parts 37-39 discharge | release the fire extinguishing gas supplied via the fire extinguishing gas supply line 42 radially in the direction which goes to the floor 11-5 from the ceiling surface 11-6a of the room 11. By doing so, the fire in the room 11 is extinguished.

The fire extinguishing gas supply source 41 is connected to one end of the fire extinguishing gas supply line 42. The fire extinguishing gas supply source 41 supplies the fire extinguishing gas to the first to third fire extinguishing gas discharge units 37 to 39 via the fire extinguishing gas supply line 42.
As a fire extinguishing gas, it is possible to use inert gas with low reactivity, such as a carbon dioxide and nitrogen, for example. Examples of other fire extinguishing gases include halide fire extinguishing agents containing halogen elements such as fluorine, chlorine, and bromine. These fire extinguishing gases are harmful to the human body.

The other end of the fire extinguishing gas supply line 42 is connected to the second fire extinguishing gas discharge unit 38. The fire extinguishing gas supply line 42 is a line for transporting the fire extinguishing gas supplied from the fire extinguishing gas supply source 41.
The fire extinguishing gas supply branch lines 43 and 44 are branched from the fire extinguishing gas supply line 42 located downstream of the automatic opening / closing valve 46 provided in the fire extinguishing gas supply line 42.
The fire extinguishing gas supply branch line 43 is connected to the first fire extinguishing gas discharge unit 37. The fire extinguishing gas supply branch line 43 supplies a part of the fire extinguishing gas flowing in the fire extinguishing gas supply line 42 to the first fire extinguishing gas discharge unit 37.
The fire extinguishing gas supply branch line 44 is connected to the third fire extinguishing gas discharge portion 39. The extinguishing gas supply branch line 44 supplies a part of the extinguishing gas flowing in the extinguishing gas supply line 42 to the third extinguishing gas discharge unit 39.

The automatic opening / closing valve 46 is provided in the fire extinguishing gas supply line 42 located closer to the fire extinguishing gas supply source 41 than the branch position of the fire extinguishing gas supply branch lines 43 and 44. The automatic opening / closing valve 46 is electrically connected to the control unit 48, and the opening / closing operation is controlled by the control unit 48.
When the automatic opening / closing valve 46 is opened, the fire extinguishing gas is supplied to the first to third fire extinguishing gas discharge portions 37 to 39. When the automatic opening / closing valve 46 is closed, the supply of the fire extinguishing gas to the first to third fire extinguishing gas discharge portions 37 to 39 is stopped.

FIG. 3 is a flowchart for explaining the fire warning and fire extinguishing method of the first embodiment when the fire warning and fire extinguishing apparatus shown in FIG. 1 is used.
FIG. 4 is a timing relating to the start and end of injection of odorous gas and fire extinguishing gas for explaining the fire warning and fire extinguishing method according to the first embodiment when the fire warning and fire extinguishing apparatus shown in FIG. 1 is used. It is a figure which shows an example of a chart.
4, t ₁ is a time when at least one of the fire alarms 21 to 23 shown in FIG. 1 senses a fire (hereinafter referred to as “time t ₁ ”), and t ₂ is a first odorant gas injection unit. 25 is a time for starting the injection of odorous gas (hereinafter referred to as “time t ₂ ”), and t ₃ is a time for starting the injection of odorous gas by the second odorous gas injection unit 26 (hereinafter referred to as “time t ₂ ”). ₃ ”), t ₄ is a time for starting the injection of the odorous gas by the third odorous gas injection unit 27 (hereinafter referred to as“ time t ₄ ”), and t ₅ is the first to third odorous gas. Time to finish the injection of the odorous gas by the injection units 25 to 27 (hereinafter referred to as “time t ₅ ”), t ₆ starts the discharge of the fire extinguishing gas by the first to third fire extinguishing gas discharge units 37 to 39. time (hereinafter referred to as "time _{t 6")} t ₇ is time to end the release of the extinguishing Gas (hereinafter referred to as "time t _7") are shown, respectively.

Moreover, in FIG. 4, regarding the fire alarms 21 to 23, a state in which at least one of the fire alarms 21 to 23 senses a fire is indicated as ON (on), and all of the fire alarms 21 to 23 are fired. A state in which no signal is detected is shown as OFF.
Moreover, regarding the first to third odorous gas injection units 25 to 27, the state where the odorous gas is released is set to ON (on), and the state where the odorous gas is not released is set to OFF (off). Show.
Regarding the first to third fire extinguishing gas discharge portions 37 to 39, the state where the fire extinguishing gas is released is indicated as ON (on), and the state where the fire extinguishing gas is not released is indicated as OFF (off).

Next, an example of a fire warning and a fire extinguishing method according to the first embodiment will be described with reference to FIGS.
When the processing shown in FIG. 3 is started, in S1, it is determined whether or not at least one of the fire alarms 21 to 23 has detected the occurrence of a fire in the room 11.
In S <b> ₁ , when it is determined that a fire is detected (determined as Yes) at time t <b> ₁ illustrated in FIG. 4, the fire alarm that has detected the fire transmits a fire detection signal to the control unit 48. Then, the process proceeds to S2.
If it is determined in S1 that no fire is detected (determined No), the process returns to S1.

Next, in S2, when at least one of the fire alarms 21-23 senses a fire in the room 11, the sound and / or light from the fire alarms 21-23 causes the person in the room 11 to generate a fire. A notification process for recognition is performed.
Thus, by using the sound and / or light from the fire alarms 21 to 23 (notifying the occurrence of a fire), for example, the visually impaired and / or the hearing impaired It can be recognized that a fire has occurred in the room 11.
Thereafter, the process proceeds to S3.

  Next, in S3, the first to third odorous gas injection units 25 to 27 arranged in the direction from the back of the room 11 toward the door 12 of the room 11 have an odor with a stimulating odor that is less harmful to the human body. A scented gas injection process for injecting gas is performed. Thereafter, the process proceeds to S4.

Here, with reference to FIG. 4, the gas injection process with a smell is demonstrated concretely.
When the control unit 48 receives the above-described fire detection signal, the control unit 48 turns the automatic open / close valves 35 and 36-1 from the closed state to the open state at a time t ₂ slightly delayed from the time t ₁ . At this time, the automatic open / close valves 36-2, 36-3, and 46 are kept in the closed state.
As a result, the odorous gas is injected from only the first odorous gas injection unit 25 disposed on the back side of the room 11 among the first to third odorous gas injection units 25 to 27.
Therefore, the person in the back of the room 11 moves to the center side of the room 11 so as to avoid the smell of the odorous gas.

Next, at time t ₃ , the control unit 48 changes the automatic opening / closing valve 36-2 from the closed state to the open state. At this time, the open state of the automatic open / close valves 35 and 36-1 is maintained, and the closed state of the automatic open / close valves 36-3 and 46 is maintained.
Thereby, among the 1st thru | or 3rd smelly gas injection parts 25-27, the 1st smelling gas injection part 25 arrange | positioned in the back | inner side of the room 11, and the 2nd arrange | positioned in the center of the room 11 The scented gas is injected from the scented gas injection unit 26.

For this reason, the person who moved to the center of the room 11 moves to the door 12 side of the room 11 so as to avoid the smell of the odorous gas injected from the second odorous gas injection unit 26.
At this time, by continuing the injection of the scented gas from the first scented gas injection unit 25, it is possible to suppress the person who has moved to the center of the room 11 from moving again to the back side of the room 11.
The injection amount of the odorous gas injected from the first and second odorous gas injection units 25 and 26 can be set to the same injection amount, for example.

Then, at time _{t 4,} the control unit 48, the automatic opening and closing valve 36-3 from a closed state to an open state. Accordingly, the open state of the automatic open / close valves 35, 36-1, and 36-2 is maintained, and the closed state of the automatic open / close valve 46 is maintained. That is, the scented gas is ejected from the first to third scented gas injection units 25 to 27.

Thereby, the person who moved to the door 12 side of the room 11 is arranged in the door knob 14 (inside the room 11) of the door 12 so as to avoid the smell of the odorous gas injected from the third odorous gas injection unit 27. It is possible to go out of the room 11 by turning the door knob.
In this way, it becomes possible for a person to go out of the room 11 before releasing the fire-extinguishing gas into the room 11, thereby suppressing the person who was in the room 11 where the fire broke out from sucking the fire-extinguishing gas. it can.
That is, in the first to third odorous gas injection units 25 to 27, the direction from the first odorous gas injection unit 25 disposed on the back side of the room 11 toward the third odorous gas injection unit 27. On the other hand, by sequentially injecting odorous gas, a person in the back of the room 11 can be guided (guided) to the door of the room 11 when a fire occurs.

In addition, by injecting the odorous gas from the third odorous gas injection unit 27 arranged inside the door 12, a person outside the door 12 at the time of the fire turns the door knob 15 to You can suppress entering.
The injection amount of the scented gas from the first to third scented gas injection units 25 to 27 can be set to the same injection amount, for example.
In the case of FIG. 4, the first to third odorous gas injection units with respect to the direction (direction A) from the back of the room 11 toward the door 12 of the room 11 during the period from time t ₂ to time t _5. This corresponds to an odorous gas injection step of injecting an odorous gas having an irritating odor that is less harmful to the human body from 25 to 27.

Then, at time _{t 5,} the control unit 48 closes the automatic on-off valve 35,36-1～36-3. Thus, in the period of time t _{5 ~} time t _6, the injection of smell with gas from the first to third smell with gas injection unit 25 to 27 is stopped. The period from time t ₅ to time t _{6 is} a period in which both the odorized gas and the fire extinguishing gas are not supplied into the room 11.
As described above, by providing a period in which both the odorous gas and the fire extinguishing gas are not supplied into the room 11 before releasing the fire extinguishing gas in the room 11, a person in the room 11 will soon be in the room 11. It can be recognized that fire extinguishing gas is released inside.
It should be noted that the period of time t _{5 ~} time t ₆ may be provided according to need, not a period of compulsory. That is, at time t _5, the automatic opening and closing valve 46 may be from a closed state to an open state.

In FIG. 4, the length of time t ₂ to time t ₃ , the length of time t ₃ to time t ₄ , and the length of time t ₅ to time t ₆ can be 10 seconds, for example.

Next, in S4, a fire extinguishing gas releasing process for releasing a fire extinguishing gas for extinguishing the fire from the first fire extinguishing gas discharge portions 37 to 39 is performed.
Here, with reference to FIG. 4, the fire extinguishing gas discharge process will be described.

At time t ₆ shown in FIG. 4, the control unit 48 opens the automatic opening / closing valve 46, thereby releasing a fire extinguishing gas that extinguishes the fire into the room 11. Next, at time t ₇ , the control unit 48 closes the automatic opening / closing valve 46 to stop the discharge of the fire extinguishing gas into the room 11.
In this way, in the fire extinguishing gas discharge step, useless consumption of the odorous gas can be suppressed by stopping the injection of the odorous gas.

In FIG. 4, the length of time t ₆ to time t ₇ can be set to 60 seconds, for example.
When the above-described fire extinguishing gas release step is finished, the process of the flowchart shown in FIG. 3 is finished.

According to the fire warning and the fire extinguishing method of the first embodiment, by using sound and / or light from the fire alarm sound, it is possible for the visually impaired person and / or the hearing impaired person to It becomes possible to recognize that a fire has occurred in the room where there is.
In addition, after the reporting step, the first to third odorous gas injection units 25 to 27 arranged in the direction (A direction) from the back of the room 11 toward the door 12 cause an irritating odor that is less harmful to the human body. By injecting a certain odorous gas, it becomes possible to guide (guide) a person in the room 11 where the fire has occurred from the back side of the room 11 to the door 12 side, so that a fire occurs from the door 12 A person can be moved out of the room 11.

Then, after the odorous gas injection process (after the person leaves the room), the fire in the room is extinguished by using the fire extinguishing gas, so that the person in the room 11 has the fire extinguishing gas that adversely affects the human body. Suction can be suppressed.
In other words, it is possible to prevent the person from inhaling the fire extinguishing gas by guiding the person in the room 11 where the fire has occurred to the door 12 of the room 11 before extinguishing the fire due to the release of the fire extinguishing gas.

FIG. 5 is a timing chart for explaining a fire warning and a fire extinguishing method according to a modification of the first embodiment.
Here, with reference to FIG. 5, the fire warning and the fire extinguishing method which concern on the modification of 1st Embodiment are demonstrated.
In the timing chart shown in FIG. 4 described in the fire warning and the fire extinguishing method according to the modification of the first embodiment, the scented gas injected from the first scented gas injection unit 25 and the second scented There was a period in which the odorous gas injected from the gas injection unit 26 or the odorous gas injected from the second and third odorous gas injection units 26 and 27 were simultaneously injected.

On the other hand, in the fire warning and extinguishing method according to the modification of the first embodiment (see FIG. 5), the period (time t ₂ to time t) in which the odorous gas is injected only from the first odorous gas injection unit 25. ₃ periods), the period for injecting the odor with gas from only the second odor with gas injection unit 26 (the period of time t _{3 ~} time t _4), with odor from only the third smell with gas injection section 27 The point in which there is a period for injecting gas (period from time t ₄ to time t ₅ ) is different from the fire warning and extinguishing method of the first embodiment.

  The fire warning and extinguishing method according to the modified example of the first embodiment described above can obtain the same effects as the fire warning and extinguishing method of the first embodiment, and can reduce the consumption of odorous gas. Can be reduced.

(Second Embodiment)
FIG. 6 is a plan view schematically showing a fire warning and a fire extinguishing device used in the fire warning and fire extinguishing method according to the second embodiment of the present invention.
In FIG. 6, from the viewpoint of making it easy to see the arrangement positions of the fire alarms 21 to 23, the first to third odorous gas injection units 25 to 27, and the first to third extinguishing gas discharge units 37 to 39, Illustration of the ceiling of the room where these are provided is omitted.
In FIG. 6, the same components as those of the fire warning and fire extinguishing apparatus 20 shown in FIG.

FIG. 7 is a side view of a plurality of fire alarms, first to third scented gas injection units, and first to third extinguishing gas discharge units provided in the room shown in FIG. 6.
In FIG. 7, the same components as those shown in FIGS. 2 and 6 are denoted by the same reference numerals. In FIG. 7, the room 11 and the door 12 are illustrated in cross section. Moreover, in FIG. 7, the several line shown below the 1st thru | or 3rd smelly gas injection parts 25-27 has shown typically the injection amount of the smelly gas.

First, with reference to FIG.6 and FIG.7, the fire warning and the fire extinguishing apparatus 50 used for the fire warning and the fire extinguishing method which concern on 2nd Embodiment are demonstrated.
The fire warning and fire extinguishing device 50 is replaced with the odorous gas supply branch lines 32 and 33 and the automatic opening / closing valves 36-1 to 36-3 constituting the fire warning and fire extinguishing device 20 described in the first embodiment. The odorous gas supply sources 51 and 55, the odorous gas supply lines 52 and 56, and the automatic opening / closing valves 53 and 57 are configured in the same manner as the fire warning and extinguishing apparatus 20.

The odorous gas supply source 51 is connected to one end of the odorous gas supply line 52. The odorous gas supply source 51 is connected to the first odorous gas injection unit 25 via the odorous gas supply line 52.
The other end of the odorous gas supply line 52 is connected to the first odorous gas injection unit 25. The odorous gas supply line 52 supplies the odorous gas derived from the odorous gas supply source 51 to the first odorous gas injection unit 25.
The automatic opening / closing valve 53 is provided in the gas supply line 52 with odor. The automatic opening / closing valve 53 is electrically connected to the control unit 48 and controlled by the control unit 48.

The odorous gas supply source 55 is connected to one end of the odorous gas supply line 56. The odorous gas supply source 55 is connected to the third odorous gas injection unit 27 via the odorous gas supply line 56.
The other end of the odorous gas supply line 56 is connected to the third odorous gas injection unit 27. The odorous gas supply line 56 supplies the odorous gas derived from the odorous gas supply source 55 to the third odorous gas injection unit 27.
An automatic open / close valve 57 and an odorous gas supply line 56 are provided. The automatic opening / closing valve 57 is electrically connected to the control unit 48 and controlled by the control unit 48.

As described above, in the fire warning and fire extinguishing apparatus 50, the odorous gas supply sources (specifically, the odorous gas supply sources) are independent of the first to third odorous gas injection units 25 to 27, respectively. 29, 51, 55).
For this reason, the kind of odorous gas supplied from the odorous gas supply sources 29, 51 and 55, the amount of odorous components contained in the odorous gas, the injection amount of the odorous gas, and the like can be varied.
For example, as shown in FIG. 7, by increasing the injection amount of the odorous gas in the direction from the door 12 toward the back of the room 11, the back side of the room 11 smells more than the door 12 side. It smells. Thereby, a person can be guided (guided) in the direction from the back of the room 11 toward the door 12, and the person can be prevented from moving to the back side of the room 11 by mistake.

Moreover, when making the odorous component contained in the odorous gas supplied from the odorous gas supply sources 29, 51, and 55 different, for example, the odorous gas in the direction from the door 12 toward the interior of the room 11 is changed. It is better to increase the amount of odorous components.
Even in this case, the back side of the room 11 has a odor that is more odorous than the door 12 side, so that a person can be guided (guided) from the back of the room 11 toward the door 12, and a person is placed on the back side of the room 11. Can be prevented from moving by mistake.
As the odorous gas, for example, the odorous gas similar to that described in the first embodiment can be used.

Next, a fire warning and a fire extinguishing method according to the second embodiment will be described with reference to FIGS. 4, 6, and 7.
In the fire warning and extinguishing method of the second embodiment, for example, the timing of gas supply and supply stop shown in FIG. 4 described in the first embodiment is adopted, and in the odorous gas injection process, the door The injection amount of the odorous gas is increased in the direction from 12 to the back of the room 11.
That is, the injection amount of the odorous gas injected from the first odorant gas injection unit 25 disposed in the back of the room 11 is maximized, and the odorous gas injection amount gradually decreases toward the door 12. Thus, the injection amount of the odorous gas injected from the first to third odorous gas injection units 25 to 27 is controlled.

  According to the fire warning and extinguishing method of the second embodiment, when a fire occurs by changing the injection amount of the odorous gas injected from the first to third odorous gas injection units 25 to 27 The person in the room 11 can be guided from the back side of the room 11 to the door 12 side while preventing the person in the room 11 from moving to the back side of the room 11, and the room 11 The person who is in can recognize the direction of the door 12.

  As a modification of the fire warning and extinguishing method of the second embodiment, the fire warning and fire extinguishing device 50 may be controlled as shown in the timing chart of FIG. In this case, the same effect as the fire warning and extinguishing method of the second embodiment can be obtained.

4 and 5, the odorous gas injection process is performed by increasing the amount of odorous components contained in the odorous gas in the direction from the door 12 toward the back of the room 11. May be performed.
In this case as well, it is possible to guide the person from the back side of the room 11 to the door 12 side while preventing the person in the room 11 from moving to the back side of the room 11, and the odorous components contained in the odorous gas Due to the concentration gradient, the person in the room 11 can recognize the direction in which the door 12 is located.

  Furthermore, you may change the kind of odorous gas supplied from the odorous gas supply source 29,51,55. In this case, the same effect as the fire warning and extinguishing method of the second embodiment can be obtained.

Further, the use of the fire warning and extinguishing device 50 shown in FIG. 6 and three types of odors that reduce the odorous components contained in the odorous gas in the direction from the back side of the room 11 toward the door 12 side. When using gas, or when reducing the injection amount of odorous gas in the direction from the back side of the room 11 toward the door 12 side, when the fire alarms 21 to 23 detect a fire, Smelled gas may be simultaneously ejected from the first to third scented gas injection units 25 to 27.
In this case, the same effect as the fire warning and fire extinguishing method of the second embodiment described above can be obtained.

(Third embodiment)
FIG. 8 is a plan view schematically showing a fire warning and a fire extinguishing device used in the fire warning and fire extinguishing method according to the third embodiment of the present invention.
In FIG. 8, the fire alarms 21 to 23, the first odorous gas injection units 25-1 to 25-3, the second odorous gas injection units 26-1 and 26-2, and the third odorous gas injection. From the viewpoint of making it easy to see the arrangement positions of the part 27 and the first to third fire extinguishing gas discharge parts 37 to 39, the illustration of the ceiling of the room 11 in which these are provided is omitted.
In FIG. 8, the same components as those of the fire warning and fire extinguishing apparatus 20 shown in FIG.

First, with reference to FIG. 8, the fire warning and fire extinguishing apparatus 60 used for the fire warning and the fire extinguishing method according to the third embodiment will be described.
The fire warning and extinguishing device 60 is replaced with the first and second odorous gas injection units 25 and 26 constituting the fire warning and extinguishing device 20 described in the first embodiment. While providing the scented gas injection units 25-1 to 25-3, 26-1, and 26-2, and further including branch lines 61, 62, and 64 and an automatic opening / closing valve 66, a fire warning and It is comprised similarly to the fire extinguishing apparatus 20.

The first odorous gas injection units 25-1 to 25-3 are provided on a ceiling (not shown) located on the back side of the room 11. The first odorous gas injection units 25-1 to 25-3 are arranged at predetermined intervals in the X direction. The first odorous gas injection unit 25-1 is connected to the odorous gas supply branch line 32.
As the first odorous gas injection units 25-1 to 25-3, for example, those similar to the first odorous gas injection unit 25 described in the first embodiment can be used.

The odorous gas supply branch line 32 is connected to the first odorous gas injection unit 25-1.
The branch line 61 is branched from the odorous gas supply branch line 32 located at a later stage than the position where the automatic opening / closing valve 36-1 is disposed. The branch line 61 is connected to the first odorous gas injection unit 25-2.
The branch line 62 is branched from the odorous gas supply branch line 32 located at the subsequent stage of the branch position of the branch line 61. The branch line 62 is connected to the first odorous gas injection unit 25-3.
In the fire warning and fire extinguishing device 60, when the automatic opening / closing valves 35 and 36-1 are opened, the odorous gas is supplied to the first odorous gas injection units 25-1 to 25-3.

The odorous gas supply line 31 is connected to the second odorous gas injection unit 26-1. When the automatic opening / closing valves 35 and 36-2 are opened, the odorous gas is supplied to the second odorous gas injection unit 26-1.
The branch line 64 branches off from the odorous gas supply branch line 32 that is located upstream of the position where the automatic opening / closing valve 36-1 is disposed. The branch line 64 is connected to the second odorous gas injection unit 26-2.
The automatic opening / closing valve 66 is provided in the branch line 64. When the automatic opening / closing valve 66 is opened, the scented gas is supplied to the second scented gas injection unit 26-2.

  In the fire warning and fire extinguishing apparatus 60 having the above-described configuration, the number of odorous gas injection units is increased in the direction from the door 12 toward the back of the room 11. For this reason, it is possible to easily increase the injection amount of the odorous gas in the direction from the door 12 toward the back of the room 11.

First, the fire warning and fire extinguishing method of the third embodiment using the fire warning and fire extinguishing device 60 shown in FIG. 8 and the timing chart shown in FIG. 4 will be described.
In the fire warning and extinguishing method of the third embodiment, in the period from time t ₂ to time t ₅ , the first odorous injection units 25-1 to 25-3 (three first odorous injection units) injecting odor with gas from the period of time _{t 3} ~ time _{t 5,} the injection odor with gas from the second odor with injection unit 26-1 and 26-2 (with two second odor ejector) Except for this, the same method as the fire warning and fire extinguishing method described in the first embodiment is used.

  That is, in the fire warning and extinguishing method of the third embodiment, in the odorous gas injection process, a plurality of odors are arranged so that the number increases in the direction from the door 12 toward the back of the room 11. Using the gas injection unit (the first to third gas injection units 25-1 to 25-3, 26-1, 26-2, 27 with odor), the direction from the back of the room 11 toward the door 12 is used. Sequentially, odorous gas is injected.

According to the fire warning and the fire extinguishing method of the third embodiment, the first to third scented gas injection units 25-1 to 25-3, 26-1, and 26-2 are provided before releasing the fire extinguishing gas. , 27 injecting the odorous gas from the door 12 toward the back of the room 11, the amount of odorous gas injection increases (because a concentration gradient of odorous components is formed in the room 11), When a fire occurs, it is possible to guide (guide) a person in the room 11 to the side of the door 12 with less gas odor.
In this manner, before the fire is extinguished due to the release of the fire extinguishing gas, it is possible to prevent the person from sucking the fire extinguishing gas by guiding the person in the room 11 where the fire has occurred to the door 12 of the room 11. .

  Further, by increasing the concentration of the odor component from the door 12 toward the back of the room 11, even if the visibility in the room 11 is poor due to smoke or the like, a person in the room 11 erroneously moves to the back of the room 11. This can be suppressed.

Note that the fire warning and extinguishing device 60 shown in FIG. 8 and the timing chart shown in FIG. 5 may be used as the fire warning and extinguishing method of the modification of the third embodiment.
In this case as well, the same effect as the fire warning and extinguishing method of the third embodiment can be obtained.

(Fourth embodiment)
FIG. 9: is a top view which shows typically the room where the fire warning and the fire extinguishing apparatus used for the fire warning and the fire extinguishing method concerning the 4th Embodiment of this invention were provided.
In FIG. 9, the fire alarms 21 to 23, the first odorous gas injection units 25-1 to 25-3, the second odorous gas injection units 26-1 and 26-2, and the third odorous gas injection. From the viewpoint of making it easy to see the arrangement positions of the part 27 and the first to third fire extinguishing gas discharge parts 37 to 39, the illustration of the ceiling of the room 11 in which these are provided is omitted.
9, the same components as those of the fire warning and fire extinguishing devices 50 and 60 shown in FIGS. 6 and 8 are denoted by the same reference numerals.

First, a fire warning and fire extinguishing device 70 used in the fire warning and fire extinguishing method according to the fourth embodiment will be described with reference to FIG.
The fire warning and extinguishing device 70 is replaced with the first and second odorous gas injection units 25 and 26 constituting the fire warning and extinguishing device 50 described in the second embodiment. It is configured in the same manner as the fire warning and fire extinguishing apparatus 50 except that the gas injection units 25-1 to 25-3, 26-1, 26-2 with odors are provided and the branch lines 71, 72, 74 are further provided. ing.

The odorous gas supply line 31 is connected to the second odorous gas injection unit 26-1.
The odorous gas supply line 52 is connected to the first odorous gas injection unit 25-1.
The branch lines 71 and 72 are branched from the odorous gas supply line 52 located at a later stage than the position where the automatic opening / closing valve 53 is provided. The branch line 71 is connected to the first odorous gas injection unit 25-2. The branch line 72 is connected to the first odorous gas injection unit 25-3.
The branch line 74 is branched from the odorous gas supply line 31 located at a later stage than the position where the automatic opening / closing valve 35 is provided. The branch line 74 is connected to the second odorous gas injection unit 26-2.

Next, the fire warning and fire extinguishing method of the fourth embodiment using the fire warning and fire extinguishing apparatus 70 shown in FIG. 9 will be described.
In the fire warning and extinguishing method of the fourth embodiment, the first to third odorous gas injection units 25-arranged so as to increase in number in the direction from the door 12 toward the back of the room 11. 1 to 25-3, 26-1, 26-2, 27, except that the odorous gas injection step is performed by the same method as the fire warning and extinguishing method of the second embodiment. it can.
According to the fire warning and fire extinguishing method of the fourth embodiment, the same effects as the fire warning and fire extinguishing method according to the second and third embodiments can be obtained.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and within the scope of the present invention described in the claims, Various modifications and changes are possible.

For example, the concentration of the odor component may be adjusted using two different concentrations of odorous gas. Alternatively, a method may be used in which the odorous gas is first released while being diluted, and the degree of dilution is gradually reduced.
Furthermore, a scented gas containing two different types of odor components (for example, fragrance component and unpleasant component) is prepared, and at the initial stage of the fire, the odorous gas containing the fragrance component is injected, and then the unpleasant component A scented gas containing may be injected. As a result, the person in the room can recognize that the degree of danger is increasing.

  DESCRIPTION OF SYMBOLS 11 ... Room, 11-1 ... 1st wall, 11-2 ... 2nd wall, 11-3 ... 3rd wall, 11-4 ... 4th wall, 11-5 ... Floor, 11-6 ... Ceiling, 11-6a ... ceiling surface, 12 ... door, 14, 15 ... door knob, 20, 50, 60, 70 ... fire warning and fire extinguishing device, 21-23 ... fire alarm, 25, 25-1 to 25-3 ... 1st smell gas injection part, 26, 26-1, 26-2 ... 2nd smell gas injection part, 27 ... 3rd smell gas injection part, 29, 51, 55 ... Gas supply with smell Source, 31, 52, 56 ... Smell gas supply line, 32, 33 ... Smell gas supply branch line, 35, 36-1 to 36-3, 46, 53, 57, 66 ... Automatic on-off valve, 37 ... 1st fire extinguishing gas discharge part, 38 ... 2nd fire extinguishing gas discharge part, 39 ... 3rd fire extinguishing gas discharge part, 41 ... fire extinguishing gas supply Source, 42 ... extinguishing gas supply line, 43 and 44 ... extinguishing gas supply branch line, 48 ... control unit, 61,62,64,71,72,74 ... branch lines, A ... direction

Claims (6)

When a fire alarm provided in a room senses a fire in the room, a notification step for causing a person in the room to recognize the occurrence of a fire by sound and / or light from the fire alarm;
Smelled gas injection for injecting odorous gas with irritating odor that is less harmful to the human body from a plurality of odorous gas injection units so that the person moves from the back of the room toward the door of the room Process,
A fire extinguishing gas releasing step for releasing a fire extinguishing gas for extinguishing the fire after the odorous gas injection step;
A fire warning and fire extinguishing method characterized by comprising:   2. The odorous gas injection step, wherein the plurality of odorous gas injection units inject the odorous gas in order in a direction from the back of the room toward the door. Fire warning and extinguishing methods.   3. The fire warning and extinguishing method according to claim 1, wherein, in the odorous gas injection step, an injection amount of the odorous gas is increased in a direction from the door toward the back of the room.   The odorous gas injection step increases the amount of odorous components contained in the odorous gas in a direction from the door toward the interior of the room. The fire warning and extinguishing method according to claim 1.   The odorous gas injection step uses the plurality of odorous gas injection units arranged so that the number increases in the direction from the door toward the back of the room. 4. The fire warning and extinguishing method according to any one of 4 above.   The fire warning and extinguishing method according to any one of claims 1 to 5, wherein in the extinguishing gas discharge step, the injection of the odorous gas is stopped.

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