JPH06292739A - Automatic fire extinguishing appliance and control method therefor - Google Patents

Abstract

PURPOSE:To provide an automatic fire extinguishing appliance having no erroneous operation on fire judgment, capable of immediately discharging a fire extinguisher toward a fire position, and capable of extinguishing a fire even when a flame is not fully increased at the corner of a room. CONSTITUTION:The flame, smoke, and abnormal temperature at a fire position are detected by a mobile flame sensor 42, four fixed flame sensors S1, S2, S3, S4, a temperature sensor 49, and a smoke sensor 50. A controller C receives the signals of the mobile flame sensor 42, four fixed flame sensors S1, S3, the temperature sensor 49, and the smoke sensor 50, controls a turn motor 17 and an angle motor 37, turns a head section 70 and rocks a nozzle section 40 to direct the nozzle section 40 toward the fire position, and discharges a fire extinguisher to extinguish a fire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple automatic fire extinguisher installed in a home kitchen or the like and a control method therefor.

[0002]

2. Description of the Related Art As a conventional automatic fire extinguisher of this type, there is one disclosed in Japanese Utility Model Laid-Open No. 1-72263. This disclosed technique is based on the case 8 as shown in FIGS.
A container 83 accommodating the fire-extinguishing water 81 and the pressurized gas 82 is provided in 0, an electromagnetic valve 84 is provided at the outlet side of the container 83, and a sprinkler head is provided at the end of a pipe 85 connected to the electromagnetic valve 84. 86 and a fire detector 87 are provided. When the fire detector 87 detects temperature (heat) or smoke, and the detected value exceeds a certain level, the solenoid valve 84 is opened to open the sprinkler head 8. I was trying to spray water from it.

[0003]

However, the fire detection in the above-described conventional automatic fire extinguishing apparatus is performed by temperature (heat) or smoke, and the fire detector 87 detects the temperature and the smoke is detected by the smoke detection. However, there is a problem in that the fire detection is slow and the fire detection level varies depending on the place, and the automatic fire extinguisher does not operate unless the flame is sufficiently large in the corner of the room.

The present invention has been made by paying attention to the above problems, and the first object thereof is that there is no malfunction in the fire judgment, and immediately after the judgment, the location of the fire is immediately detected. An object of the present invention is to provide an automatic fire extinguisher that enables extinguishment of a fire extinguishing agent and can extinguish a fire even when the flame is not sufficiently large in a corner of a room.

A second object of the present invention is to provide a control method for an automatic fire extinguishing system, which has no malfunction in fire judgment, has a high detection speed, and can set a fire judgment level with little variation. To provide.

[0006]

In order to achieve the above first object, an automatic fire extinguisher according to the present invention comprises a tank portion filled with a fire extinguishing agent, a base portion fixed to a fixed portion of a room, and A head portion that is rotatably held on the base portion,
A nozzle part is provided on this head part so as to be vertically swingable,
A nozzle drive part is provided in the base part to control the swiveling operation of the head part, and a swing drive part is also provided in the head part to control the swinging of the nozzle part. Extinguishing the fire by discharging the extinguishing agent supplied from the tank section by directing the swivel drive section and the swing drive section by inputting the signals of these detection sections And a control unit for performing the operation.

Further, in order to achieve the above-mentioned second object, the control method of the automatic fire extinguishing apparatus of the present invention is to detect the temperature abnormality in a fire, the state of smoke when smoke is generated, and the flame detecting means. It is characterized in that the fire is judged by comprehensively judging the absolute value or the change amount of the output of each detecting means.

[0008]

According to the automatic fire-extinguishing apparatus of the present invention, in the control section, each detection means detects flame, smoke, and temperature abnormality at the fire spot, and signals of these detection means are input to the swing drive section and the swinging section. The dynamic drive unit is controlled, the head unit is swung, the nozzle unit is swung to move the nozzle unit toward the fire location, and the fire extinguishing agent is discharged to extinguish the fire.

Further, in the control method for the automatic fire extinguishing apparatus of the present invention, when the temperature abnormality in the fire, the smoke state and the flame when smoke is generated are detected by the respective detecting means, the absolute output of each detecting means is detected. A fire is judged by comprehensively judging the value and the amount of change.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 is an explanatory view of the overall configuration of an automatic fire extinguisher according to the present invention, FIG. 2 is a perspective view of a tank portion of the automatic fire extinguisher, FIG. 3 is a perspective view of a nozzle mechanism portion of the automatic fire extinguisher, and FIG. 4 is the same. 5 is a vertical sectional view of the nozzle mechanism portion, FIG. 5 is a sectional view taken along line 4V-V in FIG. 6, FIG. 6 is a sectional view taken along line 4W-W, and FIG.
4 is a sectional view taken along line -X, FIG. 8 is a sectional view taken along line Y-Y of FIG. 4, and FIG. 9 is a block diagram of a control circuit of the automatic fire extinguisher according to the present invention.

The automatic fire extinguisher according to the present invention comprises a tank section A, a nozzle mechanism section B, a control section C, and a pipe section D connecting the tank section A and the nozzle mechanism section B. Then, the tank portion A has a housing 1, and this housing 1 has a right-angled portion 1a at its rear part so that it can be installed in a corner portion of a room as shown in FIG. It is open. Doors 1c and 1d that open to the left and right sides are provided in the opening 1b on the left and right. Inside the housing 1, a pressure tank 2 filled with pressurized air for pressurizing the extinguishant and an extinguishant tank 3 filled with the extinguishant at the bottom are respectively housed.
The pressure tank 2 and the fire extinguishing agent tank 3 are communicated with each other through a communication pipe 4 which is a communication portion, and the communication pipe 4 is provided with a pressure tank opening valve 5. A hose connecting pipe 6 is attached to one outlet (not shown) of the extinguishant tank 3, and the hose connecting pipe 6 penetrates the upper surface of the housing 1. A manual hose 9 is connected to the other outlet 3a of the fire extinguishing agent tank 3.
A nozzle 10 having an on-off valve portion (not shown) is attached to the tip of the, and the manual hose 9 is housed in the housing 1 in a wound state.

The nozzle mechanism B is provided on the ceiling E of the room. As shown in FIGS. 3 to 8, the nozzle mechanism portion B includes a base portion 12 and a head portion 70 which is held by the base portion 12 and swivels.
Is provided with a mounting frame 13 on its upper part, and the mounting plate 1 is mounted on the mounting frame 13 via a plurality of connecting members 14.
5 is stuck. The mounting plate 15 is formed with a circular arc-shaped hole 15a having its center as the center. The periphery of the base portion 12 is covered with the cover 43,
On the lower peripheral portion of the cover 43, the inclined portion 4 that inclines inward
3a is formed.

The mounting plate 15 includes a gear box 1
6 is fixedly attached to the gear box 16. A revolving motor 17 capable of reversing the revolving drive unit is fixedly attached together with a speed reducer 18 attached to the revolving motor, and an output shaft 19 of the speed reducer 18 has a gear. 20 is stuck. A gear 22 is fixed to the output shaft 21 of the gear box 16.
Meshes with the gear 20. A mounting flange portion 23 is provided at the lower end of the output shaft 21.

The head portion 70 is provided on the mounting flange portion 23. The head portion 70 is provided with a disc body 24 fixed to the mounting flange portion 23 at the center thereof, and the rotation center P of the output shaft 19 is sandwiched between the lower face portion of the disc body 24. Support portions 25 and 26 are provided on the left and right, and a recess 27 is formed between the support portions 25 and 26 along the radial direction of the disc body 24.

A swivel joint 28 is attached to the attachment frame 13 of the base portion 12 on the rotation center P of the output shaft 19 with its rotation axis a aligned with each other. Is connected to one end of a connecting pipe 30. One end of the upper intermediate connecting pipe 32 is connected to the outlet side of the movable portion 31 of the swivel joint 28, and the intermediate connecting pipe 32 is horizontal. One connecting side of the lower intermediate connecting tube 33 is connected to the other connecting side of the intermediate connecting tube 32. The intermediate connecting pipe 33 is vertical.

The support portion 25 on the left side of the lower surface portion of the disc body 24
Is provided with a swivel joint 34 horizontally, and the fixed portion 35 of the swivel joint 34 is fixed to the support portion 25.
Inside, the movable part 36 crosses the recess 27,
The end of the movable portion 36 is rotatably inserted in the right support portion 26. An angle motor 37 of a swing drive unit is housed and fixed in the support unit 26, and an output shaft 39 of a speed reducer 38 attached to the angle motor 37 is provided at an insertion end of a movable unit 36 of a swivel joint 34. It is connected to the department. In addition, the fixed portion 35 of the swivel joint 34
The other connection side of the intermediate connection pipe 33 is connected to the connection side of the.

The movable portion 36 of the swivel joint 34
A nozzle portion 40 is connected to. In addition, this movable part 3
A nozzle cover 41 is attached to the nozzle cover 6, and the movable flame sensor 42 directs its direction to the nozzle portion 4
It is attached in the same direction as 0.

The control section C controls the movable flame sensor 42,
Four fixed flame sensors S1, S2, S3, S4, a temperature sensor 49, a smoke sensor 50, a swivel encoder 45 and an angle encoder 48 are provided, and the four fixed flame sensors S
1, S2, S3, and S4 are inclined portions 43a of the cover 43.
They are fixed by shifting the phase by 90 degrees. The movable flame sensor 42 and the fixed flame sensors S1, S2, S3, S4
Is a voltage or pulse output directly with respect to the size of the flame (radiation intensity of the light beam). The temperature sensor 49 and the smoke sensor 50 are provided on the ceiling E. The temperature sensor 49 outputs a voltage directly to the temperature, and the smoke sensor 50 outputs a voltage directly to the amount of smoke.

A rotary encoder 45 for detecting the direction of the nozzle portion 40 is provided on the mounting plate 15. The turning encoder 45 includes a main scale 46 provided on the peripheral portion of the disc body 24, and a large number of slits (not shown) are formed at regular intervals in the main scale 46. is there. The mounting plate 15 is provided with a light emitting portion and a light receiving portion (both not shown). Also,
An angle encoder 48 for detecting the angle of the nozzle portion 40 is provided on the support portion 26.

The pipe portion D has a pipe 47, and an extinguishant tank opening valve 60 is provided in the pipe 47.
One end of 7 is connected to the hose connecting pipe 6 of the tank portion A via a hose 61, and the other end of the pipe 47 is connected to the connecting pipe 30 of the nozzle mechanism portion B.

FIG. 9 shows a block diagram of the control circuit of the control section C. This control circuit includes a microcomputer 54, and the microcomputer 54 has a storage unit 5.
7a, a calculation unit 57, a control unit 59, and A / D converters 51a, 52a, 53a connected to the calculation unit 57, and the temperature sensor 49, smoke sensor 50, and movable flame sensor 42 are , A / D converter 51a of the microcomputer 54 via the respective amplifiers 51, 52, 53,
It is connected to the input side of 52a and 53a. The fixed flame sensors S1, S2, S3, S4 are connected to the input side of the comparator 58 via the multiplexer 57, and the output side of the comparator 58 is connected to the input side of the control unit 59 of the microcomputer 54. There is. Further, the turning encoder 45 and the angle encoder 48 are connected to the input side of the control unit 59. Further, on the input side of the control unit 59, the information captured by the movable flame sensor 42, that is, the size of the flame,
A controller 61 for connecting the width, height and the like to the control unit 59 is connected.

Control unit 59 of the microcomputer 54
Are the sensors 42, 49, 50, S1, S2, S
3, based on the input signal from S4, the control output signal to the swing motor 18, the control output signal to the angle motor 37, the control output signal to the pressurized tank release valve 5, the control output to the fire extinguishant tank release valve 60. It outputs a signal and a control output signal to a buzzer (not shown), and exchanges communication control input / output with a communication partner.

Next, the operation of the automatic fire extinguisher constructed as above will be described. In this operation, each operation of a fire determination, a fire position determination, a fire size determination, a control of the nozzle unit 40, and a fire extinguishing is performed.

As shown in the flow chart of FIG. 10, the turning motor 18 and the angle motor 37 are in a state of returning to the origin, the head portion 70 is located at the origin, and
The nozzle unit 40 is also located at the origin (step S10).
1). In this state, empty data transmission (normal data transmission) is performed, and when the temperature sensor 49, smoke sensor 50, and movable flame sensor 42 do not detect an abnormality, empty data transmission is performed again (step S102).

When a fire occurs at a certain position in the room (kitchen), the temperature abnormality in the fire is detected by the temperature sensor 49, the smoke state is detected by the smoke sensor 50, and the flame is detected by the movable flame sensor 42. Each is input (step S103).
Then, the temperature sensor 49, the smoke sensor 50, the movable flame sensor 42, and the emergency switch 71 each detect an abnormality, or when any of them detects an abnormality (step S104), (step S105), (step S105). S106), (step S107), each sensor 4
The outputs of 9, 50, and 42 are input to the microcomputer 54 and A / D converters 51a, 52a, and 53a output A
The data is D-converted, and the storage unit 57a reads and stores data in a certain period. Then, the calculation unit 57 subtracts the n-1th data and the nth data of the stored data as shown in FIG. 12, and the differences, that is, the temperature increase amount ΔT, the smoke increase amount ΔV, and the flame increase amount ΔH are It is determined. When the A-D converted data exceeds the reference value, the temperature increase amount ΔT, the smoke increase amount ΔV, and the flame increase amount Δ
When H exceeds the reference value, or as will be described later, comprehensive estimation / judgment of the fire is performed using fuzzy reasoning or the like from each information.

When a fire is detected in this way, fire detection data is transmitted from the control unit 59 of the microcomputer 54 (step S108), and a buzzer is issued (step S109). The subsequent operation will be described in detail with reference to the flow shown in FIG. 11, but generally, as shown in the flow in FIG. 10, the four fixed flame sensors S1, S2, S3,
S4 scans, detects the flame (step S110),
The location of the fire is arbitrated (step S111), and the nozzle portion 40 is turned to the arbitrated fire (step S11).
2), the moving flame sensor 42 scans (step S11
3), the center of the fire is detected (step S114). When it is detected that the fire is extinguished, the process returns to step S101. When it is detected that the fire has not been extinguished, water is discharged for 2 minutes (step S115), and the moving flame sensor 42 again searches for whether the fire has been extinguished (step S1).
16), if it is detected that the fire is extinguished, step S1
Return to 01. When it is detected that the fire has not been extinguished (step S117), water is discharged for 1 minute, and the fire is extinguished again (step S118).

Steps S110 to S114
The details of the operation will be described with reference to the flow of FIG. The outputs of the four fixed flame sensors S1, S2, S3, S4 enter the comparator 58 via the multiplexer 57, and the area ~ is estimated.

That is, as shown in FIG. 13 (1), the fixed flame sensors S1, S2, S3 and S4 are located in each of the four divided areas of the room. The area is the shaded portion in FIG. 13 (1), the area is the shaded portion in FIG. 13 (2), the area is the shaded portion in FIG. 13 (3), and the area is FIG.
This is the portion indicated by diagonal lines in (4). Area is Figure 13
The area shown in FIG. 13 is shaded in (5).
The area is shown by the diagonal lines in (6), and the area is shown in FIG.
(7) is a hatched portion, and the area is shown in FIG.
This is the portion shown by hatching in (8).

Then, the area is estimated as shown in (Table 1). Among the four fixed flame sensors S1, S2, S3 and S4, the output of the fixed flame sensor S1 is "large" and the other fixed flame sensor S2. , S3, S4 are determined to be "small". The area is estimated by four fixed flame sensors S1 and S.
Of the 2, S3, S4, the output of the fixed flame sensor S2 is "large"
It is when the outputs of the other fixed flame sensors S1, S3, S4 are determined to be "small". The area is estimated by the fixed flame sensor S among the four fixed flame sensors S1, S2, S3, and S4.
The output of 3 is "large" and other fixed flame sensors S1, S2, S4
Is determined to be “small”. In the area estimation, it is determined that the output of the fixed flame sensor S4 of the four fixed flame sensors S1, S2, S3, S4 is “large” and the output of the other fixed flame sensors S1, S2, S3 is “small”. It's time to go.

Further, the area estimation is performed by using the fixed flame sensor S1, S4, S3, S4, and the fixed flame sensor S1,
This is when it is determined that the output of S2 is "medium" and the outputs of the other fixed flame sensors S3 and S4 are "small". In the area estimation, it is determined that the outputs of the fixed flame sensors S2, S3 of the four fixed flame sensors S1, S2, S3, S4 are "medium" and the outputs of the other fixed flame sensors S1, S4 are "small". It's time to go. The area is estimated by four fixed flame sensors S1 and S.
This is when it is determined that the outputs of the fixed flame sensors S3 and S4 out of 2, S3 and S4 are "medium" and the outputs of the other fixed flame sensors S1 and S2 are "small". The area is estimated by the fixed flame sensor S among the four fixed flame sensors S1, S2, S3, and S4.
Outputs of 1 and S4 are "medium", and other fixed flame sensors S2 and S3
Is determined to be “small”. Further, the area estimation is based on four fixed flame sensors S1, S2, S3,
This is when it is determined that all the outputs of S4 are "large".

[0031]

[Table 1]

As described above, when it is determined that the place where the fire has occurred is one of the areas 1 to 3 (step S201), this data is taken in by the control unit 59 and the fire origin position and the situation of the fire. (Size) is estimated. That is, the control unit 59 outputs a control signal to the turning motor 17 and the angle motor 37 based on the data.
For this reason, the turning motor 17 is driven (step S202), the output shaft 21 rotates via the gear 20 and the gear 22 of the speed reducer 18, and the head portion 70 turns. The turning of the head portion 70 is performed on the rotation center P of the output shaft 21, that is, about the axis line, and the axis line a of the movable section 31 of the swivel joint 28 is aligned with this axis line. The intermediate connecting pipes 32, 33 swivel. Further, the turning of the head portion 70 is performed every 45 degrees, and the turning of the head portion 70 causes the main scale 46 of the turning encoder 45 to rotate.

Further, the angle motor 37 is driven (step S203), the movable portion 36 of the swivel joint 34 is rotated, and the nozzle portion 40 is vertically rotated at intervals of 30 degrees. Therefore, the movement of the nozzle portion 40 is rotated upward by 15 degrees from the vertical state and rotated by 45 degrees in the horizontal direction, and then rotated by 30 degrees in the upward direction and then by (-) 4 in the horizontal direction.
Turn 5 degrees (return), then turn 30 degrees upward and turn 45 degrees horizontally. A main scale (not shown) of the angle encoder 48 is rotated by the rotation of the movable portion 36.

The movable flame sensor 40 detects the flame R by the above movement (turning of the head portion 70) (step S20).
4), the detection unit (light emitting unit and light receiving unit) of the turning encoder 45 starts counting the slits of the main scale 46 (step S205). That is, as shown in FIG. 14, pulse counting starts from the time a when the turning encoder 45 detects the flame R, and the time b when the flame R cannot be detected.
Then, the counting ends (step S206). Then, the microcomputer 54 stores this count number.

In addition, the above movement (swivel joint 3
When the movable flame sensor 40 detects the flame R (step S204), the movable flame sensor 40 is rotated by the movable portion 36 of FIG. Start counting the slits of the scale (step S205). That is, as shown in FIG. 15, pulse counting is started at the time d when the angle encoder 48 detects the flame R, the pulse counting is continued (step S206), and the counting is finished at the time e when the flame R cannot be detected ( Step S207). And
The count number is stored in the storage unit 5 of the microcomputer 54.
7a stores. In step S204, the movable flame sensor 40
Does not detect the flame R, the process returns to step S202.
If the flame R is still detected in step S207, the process returns to step S206.

The microcomputer 54 controls the turning motor 17 and the angle motor 37 based on the count number.
To control. By the control of the turning motor 17, the head portion 70 is turned to a position corresponding to half of the count number, and the nozzle portion 40 is positioned on the vertical line Q passing through the central portion O of the flame R as shown in FIG. . Further, by controlling the angle motor 37, the nozzle portion 40 is rotated to a position corresponding to half of the count number, and the nozzle portion 40 is moved to the position shown in FIG.
As shown in FIG. 6, the central portion O of the flame R is directed (step S
208).

Next, the microcomputer 54 outputs a pressure tank release valve control signal, and the pressure tank release valve 5 is output.
Is released (step S209). For this purpose, pressurized air is introduced into the extinguishant tank 3. The microcomputer 54 outputs an extinguishant tank release valve control signal,
The extinguishant tank release valve 60 is opened (step S21).
0). For this purpose, water (extinguishing agent) is used in the hose 61 and the pipe 4.
7, the connecting pipe 30, the swivel joint 28, the intermediate connecting pipes 32 and 33, and the swivel joint 34 are pressure-fed to the nozzle portion 40, and water is ejected to the central portion O of the flame R to extinguish the fire. When the extinguishing of the fire is completed, the nozzle 40 returns to the origin (step S211).

Further, pulse counting is started from time a when the rotary encoder 45 detects the flame R, ends counting at time b when the flame R cannot be detected, and starts pulse counting from time d when the angle encoder 48 detects flame R. The counting is started, and the counting is finished at the time e when the flame R cannot be detected. However, when the pulse count between a and b and d to e is long, that is, when the flame R is large, the nozzle unit 40 discharges water. Rock while starting. The movement of the nozzle portion 40 is as shown in FIG. 17 (1) when the figure 8 is drawn with respect to the flame R, when it surrounds the center O of the flame R as shown in FIG. As shown in 17 (3), there may be a case where the flame R spirally extends outward from the center O of the flame R.

Comprehensive estimation of fire using fuzzy reasoning, etc.
When making a judgment, as shown in the fire inference judgment flow of FIG. 18, when a fire occurs at a certain position in the room (kitchen),
The temperature sensor 49 detects the temperature abnormality due to the fire, the smoke sensor 50 detects the state of the smoke when smoke occurs, and the movable flame sensor 42 detects the flame to measure the smoke (step S30).
2) The microcomputer 54 A / D converts the analog output from the sensors 42, 49, 50 and stores the data in the storage unit 57a (step S303).
Then, in the calculation unit 57, the temperature sensor n-th data DT (n), the smoke sensor n-th data DV (n), and the flame sensor n-th data DH (n) are used to determine the temperature sensor n-th data DT (n-1). , Smoke sensor n-1st data DV
(N-1), flame sensor n-1st data DH (n-1)
And an increase (decrease) is observed, it is determined to be abnormal (step S304), (step S305), (step S306), fuzzy inference is performed, and the inference result is output (step S307). Then, the stored data is erased (step S308), and the process returns to step S302. (Step S304), (Step S305),
If it is determined that there is no abnormality in (step S306), the process returns to step S302.

As the membership function for the above fuzzy reasoning, the temperature increase amount ΔT, the flame increase amount ΔH, and the smoke increase amount ΔV shown in FIGS. 19 (1), (2), and (3) are adopted,
The inference rules (1) to (8) are applied as the consequent part membership function.

Then, the inference rules (1) to (8) are inferred as follows. Inference rule (1) If temperature increase is large and flame increase is medium and smoke increase is small then fire inference rule (2) If temperature increase is large and flame increase is small and smoke increase is medium then fire inference rule (3) If Temperature increase is medium and flame increase is large and smoke increase is small then fire Reasoning rule (4) If temperature increase is medium and flame increase is medium and smoke increase is medium then fire reasoning rule (5) If temperature increase is medium and flame Increase is small and smoke increase is large then fire Reasoning rule (6) If temperature increase is small and flame increase is large and smoke increase is small then fire reasoning rule (7) If temperature increase is small and flame increase is medium and smoke increase Is the middle fire Inference rule (8) If temperature increase is small and flame increase is small and smoke increase is large and it is inferred that it is a fire. To determine.

When the nozzle mechanism portion B is attached to the ceiling portion E, an illumination device 62 may be arranged around the nozzle mechanism portion B as shown in FIG. 20 and integrated with the illumination device 62. In this case, the outer appearance of the peripheral portion of the nozzle mechanism portion B is hidden by the lighting device 62, so that the appearance is improved.

FIG. 22 shows another embodiment of the tank portion A. The tank portion A has a housing 71, and the housing 71
Has a quadrangular shape in plan view, and its front and upper surfaces are open. A lid 79 that opens rearward is provided in the opening 71a on the upper surface, and a door 7 that opens rightward is provided in the opening 71b on the front surface.
2 are provided respectively. A nozzle fitting portion 69 is formed on the opening 71b of the casing 71.

In the case 71, a pressurizing tank 73 filled with pressurized air for pressurizing the extinguishant and an extinguishant tank 74 filled with the extinguishant at the bottom are respectively housed in the housing 71. The pressure tank 73 and the fire extinguishing agent tank 74 communicate with each other through a communication pipe (not shown), and a pressure tank opening valve (not shown) is provided in this communication pipe. A hose connecting pipe (not shown) is attached to one outlet (not shown) of the extinguishant tank 74, and a manual hose 75 is attached to the other outlet (not shown) of the extinguishant tank 74. Is connected, and a nozzle portion 77 having a hand opening / closing valve portion 76 is attached to the tip end portion of the manual hose 75, and the manual hose 75 is stored in a housing 71 in a state of being wound on a reel 78. I am doing it. The nozzle portion 77 is detachably attached to the nozzle fitting portion 69.

The tank portion A constructed as described above is shown in FIG.
As shown in FIG. 1, the hose connecting pipe is installed at one corner of the room and is connected to the nozzle mechanism portion B of the ceiling portion E through the pipe portion D.

In the configuration of the tank portion A described above, the upper lid 7
By opening 9, the pressurized gas can be easily enclosed in the pressurized tank 73, and by opening the front door 72, the extinguishant can be easily enclosed in the extinguishant tank 74. Further, since the manual hose 75 is stored in the housing 1 in a state of being wound on the reel 78, and the nozzle portion 77 is detachably attached to the nozzle fitting portion 69,
When a fire occurs, the nozzle portion 77 can be quickly removed from the nozzle fitting portion 69 and the water can be discharged into the fire.

In the above embodiment, in the control section C, each detecting means, that is, the movable flame sensor 42, the four fixed flame sensors S1, S2, S3, S4, and the temperature sensor 4 are used.
9. The smoke sensor 50 detects flames, smoke, and temperature abnormalities at a fire spot, and inputs signals from these detection means to a swing drive unit (swing motor 17 or the like), a swing drive unit (angle motor 37 or the like), The pressure tank opening valve 5 and the extinguishant tank opening valve 60 are controlled, the head portion 70 is swung, the nozzle portion 40 is swung to move the nozzle portion 40 toward the fire location, and extinguishing the extinguishant is performed to extinguish the fire. Close. For this reason, there is no malfunction in the fire judgment, and it is possible to immediately release the extinguishing agent to the fire spot after the judgment, even if the flame does not grow sufficiently in the corner of the room, it is possible to extinguish the fire. .

Further, in the above control method of the automatic fire extinguishing apparatus, the temperature abnormality in the fire, the state of the smoke and the flame when smoke occurs are detected by the respective detecting means, that is, the movable flame sensors 42, 4 Fixed flame sensors S1, S2, S3, S
4, the temperature sensor 49 and the smoke sensor 50 detect, and the fire is judged by comprehensively judging the absolute value or the amount of change in the output of each detecting means. For this reason, there is an effect that there is no malfunction in the fire judgment, the detection speed becomes faster, and the fire judgment level with less variation can be set.

Although water is used as the extinguishing agent in the above embodiment, the extinguishing agent described below may be used.

Conventional oil fire extinguishing agents include powder fire extinguishing agents, strong alkaline strengthening solutions, neutral strengthening solutions, chemical foam extinguishing solutions and the like. However, in such a conventional fire extinguisher liquid, the powdered fire extinguisher has a small effect on the oil that is burning, and the injection device is complicated. The strong alkaline strengthening liquid has a high pH of 13 or more, and therefore has a high fire extinguishing ability, but is harmful to humans and animals, and adversely affects corrosion of storage tanks and pipes. Although the neutral strengthening liquid has low toxicity, it has a low fire extinguishing ability and requires a large amount of chemical liquid to extinguish the fire. Also, in an oil fire, the deflagration phenomenon in the initial stage of the fire extinguishing is severe and there is a possibility of burning. The chemical foam extinguishing agent has a moderate extinguishing ability, but the storage tank has a complicated structure because it is necessary to mix and inject acidic and alkaline chemicals immediately before use, and the gel produced as a result of mixing. There is a problem that the particulate matter (aluminum hydroxide) clogs the nozzle and adversely affects the injection.

As a fire extinguishing agent solution which can solve such problems, a mixture of at least two kinds of water, detergent and sodium hydrogen carbonate is preferable. For example, it is a fire extinguisher liquid in which 10 to 100 g of a neutral detergent and 10 to 100 g of sodium hydrogen carbonate are mixed with 1 liter of water.

This extinguishing agent solution has the following advantages. It is safe and almost harmless to humans and animals. Compared to conventional neutral fire extinguishing liquids, it has a high fire extinguishing ability against oil fires. Since the solution ph is approximately 7.8, which is almost neutral, it is less likely to have adverse effects such as corrosion and swelling on the tank piping of the fire extinguishing equipment. Since the drug is commercially available, it can be obtained by the general public without any problems, and even if it is necessary to refill the drug solution, the drug can be safely and easily operated. Since the chemicals to be mixed are completely dissolved in water, nozzle clogging does not occur.

Various fire extinguishing agents having the composition ratios shown in the examples (Table 2) were prepared, and each composition was filled into the fire extinguishing apparatus 91 shown in FIG. 23 by 2 liters and pressurized by the compressor 92 to obtain the tempura oil fire model 93. A fire extinguishing test was performed by injecting it into.

[0054]

[Table 2]

Fire Extinguishing Experiment 700CM ³ of tempura oil (soybean oil, ignition point 350 to 370 ° C.) was heated and ignited on a stove in a wok with a diameter of 23 cm and a depth of 8 cm, and after the fire power was sufficiently expanded, various digestive liquids were used. Was extinguished from the fire extinguisher 91, and the extinguishing ability and the spread of the fire were observed. The results are shown in (Table 3).

[0056]

[Table 3]

From the above results, the extinguishing agent solution obtained by mixing sodium bicarbonate and a neutral detergent as compared with the conventional extinguishing agent solution is
It can be seen that it has both excellent fire extinguishing ability against oil fire and safety.

[0058]

As described above, in the automatic fire-extinguishing system according to the present invention, in the control section, each detecting means detects flame, smoke and temperature anomaly at the fire spot, and signals of these detecting means are detected. Is input to control the swivel drive unit and the swing drive unit to swivel the head unit, swing the nozzle unit, move the nozzle unit toward the fire location, and extinguish the fire by releasing the extinguishing agent. For this reason, there is no malfunction in the fire judgment, and it is possible to immediately release the extinguishing agent to the fire spot after the judgment, even if the flame does not grow sufficiently in the corner of the room, it is possible to extinguish the fire. .

Further, in the control method of the automatic fire extinguishing apparatus of the present invention, when abnormal temperature in a fire, smoke state and smoke state and flame are detected by the respective detecting means, the detecting means of each detecting means. A fire is judged by making a comprehensive judgment of the absolute value of output or the amount of change. For this reason, there is an effect that there is no malfunction in the fire judgment, the detection speed becomes faster, and the fire judgment level with less variation can be set.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the overall configuration of an automatic fire extinguisher according to the present invention.

FIG. 2 is a perspective view of a tank portion of the automatic fire extinguisher.

FIG. 3 is a perspective view of a nozzle mechanism portion of the automatic fire extinguisher.

FIG. 4 is a vertical sectional view of the nozzle mechanism portion.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is a sectional view taken along the line WW of FIG.

FIG. 7 is a sectional view taken along line XX of FIG.

FIG. 8 is a sectional view taken along the line Y-Y of FIG.

FIG. 9 is a block diagram of a control circuit of the automatic fire extinguisher according to the present invention.

FIG. 10 is a flow chart of a control circuit of the automatic fire extinguisher according to the present invention.

FIG. 11 is a detailed flowchart of a part of the control circuit of the automatic fire extinguisher according to the present invention.

FIG. 12 is a graph showing the amount of increase in sensor output.

13 (1) to (8) are explanatory views of areas formed by dividing a room.

FIG. 14 is an explanatory diagram of a flame size and an output of a rotation encoder.

FIG. 15 is an explanatory diagram of a flame size and an output of an angle encoder.

FIG. 16 is an explanatory diagram of the size of a flame.

17 (1) to (3) are explanatory views showing the locus of movement of the nozzle portion with respect to the flame.

FIG. 18 is a flowchart of fire inference determination.

FIG. 19 (1) is a diagram showing a fuzzy inference membership function (amount of temperature increase). (2) is a diagram showing a membership function (flame increase amount) of fuzzy reasoning. (3) is a diagram showing a membership function (smoke increase amount) of fuzzy inference.

FIG. 20 is a perspective view showing a state where the nozzle mechanism unit is incorporated in a lighting fixture.

FIG. 21 is a perspective view of another embodiment of the present invention.

FIG. 22 is a perspective view of a tank portion of the automatic fire extinguisher.

FIG. 23 is a diagram showing the structure of an experimental device for a fire extinguishing agent.

FIG. 24 is a front view of a conventional automatic fire extinguisher.

FIG. 25 is a side view, partly in section, of the automatic fire extinguisher.

[Explanation of symbols]

 17 Swing Motor (Swing Drive Unit) 37 Angle Motor (Swing Drive Unit) 40 Nozzle Unit 42 Movable Flame Sensor (Detection Means) 49 Temperature Sensor (Detection Means) 50 Smoke Sensor (Detection Means) 70 Heads S1, S2, S3 , S4 fixed flame sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazunori Morimura, Omron Co., Ltd. 10 Hanazono Dodo-cho, Ukyo-ku, Kyoto (72) Inventor Koji Nakamura 1005 Ganjo, Kurayoshi, Tottori Omron Kurayoshi Co., Ltd. ( 72) Inventor Satoshi Nozoe Omron Co., Ltd. 10 Hanazono Dodo-cho, Ukyo-ku, Kyoto City, Kyoto Prefecture

Claims (5)

[Claims] 1. A tank section filled with a fire extinguishing agent, a base section fixed to a fixed section of a room, and a head section pivotably held by the base section, and a nozzle section perpendicular to the head section. And a swing drive unit for controlling the swing operation of the head unit are provided on the base unit,
It has a nozzle mechanism part that has a swing drive part that controls the swing of the nozzle part in the head part, and detection means for flame, smoke, and temperature abnormality at the fire spot, and swivel drive with signals from these detection means as input. And a swinging drive part to control the nozzle part toward the fire location and to extinguish the fire by discharging the extinguishing agent supplied from the tank part. 2. When a temperature abnormality or smoke occurs in a fire, the state of the smoke and the flame are detected by the respective detecting means, and the absolute value or the change amount of the output of each detecting means is comprehensively judged to detect the fire. A method for controlling an automatic fire extinguisher, which is characterized by making a judgment. 3. The output of each detection means is input to a microcomputer to subtract the n-1th data and the nth data of this data to determine the temperature increase amount ΔT, the smoke increase amount ΔV, and the flame increase amount ΔH. , The temperature increase amount ΔT, the smoke increase amount ΔV,
The control method for an automatic fire extinguisher according to claim 2, wherein when the flame increase amount ΔH exceeds a reference value, comprehensive estimation and judgment of a fire are performed. 4. The control method for an automatic fire extinguisher according to claim 2, wherein the outputs of the respective detection means are input to a microcomputer to make a comprehensive estimation / judgment of a fire when this data exceeds a reference value. 5. The method for controlling an automatic fire extinguisher according to claim 2, wherein the fire is comprehensively estimated and judged by using fuzzy inference based on the output data of each detecting means.