JPH09218190A - Suction type smoke detecting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily specify the presence or absence of smoke and the generating position of smoke by arranging a plurality of pipings in a plurality of monitoring sections, and selectively regulating the; superposing manner and boring position of opening of each piping in each monitoring section. SOLUTION: Two air sampling pipes 1 are arranged in three monitoring sections 7, 8, 9; the first air sampling pipe 1A is arranged extending over the sections 7, 8, and the second air sampling pipe 1B extending over the sections 8, 9. Openings 2 are provided facing the sections 7, 8, respectively, in the pipe 1A, and facing the sections 8, 9, respectively, in the pipe 1B. Two suction smoke detecting devices 3 are provided in conformation to the pipes 1. A smoke generating position specifying device 4 reads the result detected by the device 3 and specifies the generating position of smoke by the combination of the presence or absence of fume in each pipe 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction type smoke detection system for sucking gas such as air and detecting whether smoke or the like due to fire is mixed in the gas.

[0002]

2. Description of the Related Art In general, a suction type smoke detection system is known which sucks sampling air in a monitored area and detects whether or not smoke is generated in the area. In this suction type smoke detection system, a plurality of monitoring areas are usually monitored simultaneously.

A pipe for taking in sampling air is provided for each of the monitoring areas, so that it is possible to know whether smoke is generated and in which monitoring area the smoke is generated, depending on which pipe detects the smoke. Has become.

[0004]

However, in the suction type smoke detection system having the above-mentioned structure, since the pipes must be provided for each monitoring area, the number of pipes increases, the apparatus becomes bulky, and each monitoring area has a large volume. The installation work also becomes complicated. As a result, the cost increases.

The present invention has been made in consideration of the above points, and provides a suction type smoke detection system capable of simplifying the apparatus by reducing the number of pipes and easily specifying the smoke generation position. That is the purpose.

[0006]

In order to solve the above problems, a suction type smoke detection system according to the present invention has a plurality of pipes arranged so as to face a plurality of monitoring areas with openings for sucking ambient gas. And a smoke detecting means connected to each pipe for detecting smoke mixed in the gas, a stacking position of the plurality of pipes, and a position of opening the opening are selectively adjusted to generate a smoke generation position by a combination of these. And a smoke generation position specifying means for specifying

In this invention, two or more pipes are provided. Each pipe is arranged in a part or all of a plurality of monitoring areas in a superposed state. The openings may be provided in all the pipes or in some of the pipes where the pipes overlap. As a result, when smoke is generated in a specific monitoring area, the smoke detection means detects smoke in one or more of the pipes. The smoke generation position specifying means specifies the smoke generation position by a combination of smoke detection and smoke detection in each pipe.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] Hereinafter, a suction type smoke detection system according to the present embodiment will be described in detail with reference to the drawings.

The overall construction of the suction type smoke detection system is shown in FIG.
As shown in, the air sampling pipe 1 as a pipe mainly arranged on the ceiling surface or wall surface of the monitoring areas 7, 8 and 9 (see FIG. 1) for taking in air in the monitoring areas 7, 8 and 9. This air sampling tube 1 is provided with an opening 2 facing the monitored areas 7, 8 and 9 for sucking air, and whether the air taken in by being connected to the air sampling tube 1 contains smoke. Suction smoke detection device 3 as a smoke detection device for detecting, and as smoke generation position specifying device for specifying the presence or absence of smoke generation and its generation position based on the detection result of this suction smoke detection device 3 and displaying it. The smoke generation position specifying device 4 is provided.

The suction smoke detection device 3 detects a fan 5 for sucking the air in the monitoring areas 7, 8 and 9 through the air sampling pipe 1 and whether or not smoke is mixed in the air sucked by the fan 5. And a smoke detector 6 for detecting.
The smoke generation position identification device 4 is connected to each suction smoke detection device 3 by the common bus 10, and based on the detection result of each suction smoke detection device 3, the presence or absence of smoke generation and its generation position are identified and displayed. It is like this.

In this embodiment, as shown in FIG. 1, three monitoring areas 7, 8 and 9 are set.

Two air sampling tubes 1 are provided in each of the three monitoring areas 7, 8 and 9. The first air sampling tube 1A is arranged across the first monitoring area 7 and the second monitoring area 8. The second air sampling tube 1B is arranged across the second monitoring area 8 and the third monitoring area 9. That is, in the first monitoring area 7, only the first air sampling tube 1A is arranged. First in the second monitoring area 8
The air sampling tube 1A and the second air sampling tube 1B are arranged so as to overlap each other. In the third monitoring area 9, only the second air sampling tube 1B is provided. The opening 2 is the first in the first air sampling tube 1A.
And the second monitoring areas 7 and 8 respectively,
In the second air sampling tube 1B, the second and third
They are provided facing the monitoring areas 8 and 9, respectively.

As shown in FIG. 2, the suction smoke detection device 3 has
Two are provided corresponding to each air sampling tube 1. The smoke generation position specifying device 4 takes in the result detected by each suction smoke detection device 3 and specifies the smoke generation position by the combination of the presence or absence of smoke in each air sampling tube 1. A memory 11 is incorporated in the smoke generation position identifying device 4, and the memory 11 stores a combination of presence / absence of smoke detection in each air sampling tube 1 and a monitoring area 7, 8, 9 corresponding thereto. Has been done. Specifically, the combination is as follows. The modes of smoke detection include (1) first and second air sampling tubes 1A, 1B
If no smoke is detected in any of the above, (2) If smoke is detected only in the first air sampling tube 1A, (3)
When smoke is detected in any of the first and second air sampling tubes 1B and 1A, (4) Smoke may be detected only in the second air sampling tube 1B. In the case of (1), no smoke is generated, and in the case of (2), the first
Smoke generation in surveillance area 7, second surveillance area 8 in case of (3)
Smoke generation is stored in the memory 11, and in the case of (4), a combination of smoke generation in the third monitoring area 9 is stored in the memory 11.

[Operation] In the suction type smoke detection system configured as described above, the air sucked through the opening 2 of the air sampling pipe 1 arranged in each of the monitoring areas 7, 8 and 9 is sucked smoke. It is taken into the detection device 3 and it is detected whether or not smoke is mixed in the air. When this smoke detection device 3 detects smoke, the smoke generation position specifying device 4 specifies the smoke generation position, and the smoke generation and the generation position are displayed.

The smoke generation position specifying process in the smoke generation position specifying device 4 is performed by comparing the signal of the presence or absence of smoke detection from each suction smoke detecting device 3 with the data stored in the memory 11. Specifically, the first and second air sampling tubes 1
If no smoke is detected in either A or 1B, it is determined that no smoke is generated. 1st air sampling tube 1A
When the smoke is detected only by itself, it is determined that the smoke is generated in the first monitoring area 7. First and second air sampling tubes 1
When smoke is detected in both B and 1A, it is determined that smoke is generated in the second monitoring area 8. When smoke is detected only in the second air sampling tube 1B, it is determined that smoke is generated in the third monitoring area 9.

According to this judgment, smoke is monitored in any of the monitoring areas 7, 8,
9 is specified, and the occurrence position of smoke is displayed on the smoke occurrence position identifying device 4 together with the occurrence of smoke.

[Effect] As described above, by selectively adjusting the stacking manner of the air sampling tube 1 and the drilling position of the opening 2, the smoke generation position can be easily specified.

[Second Embodiment] The overall structure of the suction type smoke detection system according to the present embodiment is almost the same as that of the suction type smoke detection system of the first embodiment, and therefore the description thereof is omitted here.

In this embodiment, as shown in FIG. 3, three air sampling tubes 12 are provided. The three air sampling tubes 12 are provided in parallel,
It is arranged over the monitoring areas 13, 14, 15, 16, 17, 18, and 19 at one place. This monitoring area 13,14,1
Reference numerals 5, 16, 17, 18, and 19 are computers, communication devices, and the like. Each air sampling tube 12 is connected to each monitored area 1
It is arranged along the upper side surface of 3, 14, 15, 16, 17, 18, and 19. A suction smoke detection device 21 similar to the suction smoke detection device 3 of the first embodiment is provided at the base end of each air sampling tube 12.

The combination of the openings 22 provided in each air sampling tube 12 is as follows. Since there are three air sampling tubes 12, there are eight combinations as to whether or not the openings 22 are provided in each, and three of them have no openings 22 and are excluded. If there are no openings 22 on all three, the monitoring area 13, 14, 15, 16,
This is because air cannot be taken in from among 17, 18, and 19.

Each air sampling tube 12 is provided with an opening 22 in the following combination.

The first air sampling tube 12A has a first monitoring area 13, a fourth monitoring area 16, and a sixth monitoring area 18.
An opening 22 is provided in the seventh monitoring area 19. In the second air sampling tube 12B, the second monitoring area 1
An opening 22 is provided in the fourth, fourth monitoring area 16, the fifth monitoring area 17, and the seventh monitoring area 19. The third air sampling pipe 12C is provided with openings 22 in the third monitoring area 15, the fifth monitoring area 17, the sixth monitoring area 18, and the seventh monitoring area 19.

As a result, each air sampling tube 12
The relationship between the smoke detection in and the smoke generation position is as follows. When smoke is detected only by the first air sampling tube 12A, it is detected in the first monitoring area 13, and when smoke is detected only by the second air sampling tube 12B, it is detected in the second monitoring area 14 and only by the third air sampling tube 12C. When the smoke is detected in the third monitoring area 15 and when the first air sampling tube 12A and the second air sampling tube 12B detect smoke, in the fourth monitoring area 16, the second air sampling tube 12B and the third air sampling tube 1 are detected.
When smoke is detected at 2C, the first
When smoke is detected by the air sampling pipe 12A and the third air sampling pipe 12C, the sixth monitoring area 18
Then, when smoke is detected by the first air sampling tube 12A, the second air sampling tube 12B, and the third air sampling tube 12C, it is determined that the smoke is generated in the seventh monitoring area 19. These combinations are stored in the memory (not shown).

Also in the suction type smoke detection system having the above-mentioned configuration, depending on which of the three air sampling pipes 12 has detected smoke, the above-mentioned combination allows the monitoring areas 13, 14, 15, 16 at seven locations. It is possible to easily specify the smoke generation position from the numbers 17, 17, 18 and 19.

[Third Embodiment] In this embodiment, as shown in FIG. 4, air sampling pipes 31 are arranged vertically and horizontally at regular intervals. The air sampling pipes 31 arranged vertically and horizontally are arranged under the floor of the clean room. At the base end of each air sampling tube 31,
Suction smoke detectors 32 are provided respectively.

The openings (not shown) are provided at the intersecting positions of the vertical air sampling pipe 31 and the horizontal air sampling pipe 31, respectively. This allows
The position where the vertical air sampling pipe 31 that detects smoke and the horizontal air sampling pipe 31 intersect is the smoke generation position.

In a clean room, air is circulated from the ceiling to the floor, and the air is taken in by an air sampling pipe 31 to detect the presence or absence of smoke.

When smoke is detected in the air sampling pipe 31, the vertical air sampling pipe 3 is always used.
1 and the lateral air sampling pipe 31 are detected as one set, the intersecting position is determined to be the smoke generation position, and the smoke generation and the generation position are displayed on the suction smoke detection device (not shown). To do.

Thus, in a room having a large floor area such as a clean room, smoke generated locally is
It becomes possible to detect efficiently.

[Modification] (1) In addition, in the smoke detected by the suction smoke detectors 3, 21, 32 in each of the above-described embodiments, not only white and black smoke generated by a fire but also a fire Includes odors and gases that are emitted just before the outbreak. Further, it also includes foreign matter such as smoke and gas generated due to an abnormality other than a fire, which is not mixed in normal air.

(2) In the third embodiment, the case where the air sampling pipe 31 is arranged under the floor has been described, but the same operation and effect can be obtained even when the air sampling pipe 31 is arranged vertically along the wall surface. be able to.

(3) In the third embodiment, the case where the air sampling pipes 31 are arranged two-dimensionally under the floor has been described. However, a plurality of the air sampling pipes 31 arranged two-dimensionally are vertically laminated. Alternatively, they may be arranged three-dimensionally. As a result, the smoke generation position can be specified three-dimensionally.

[0033]

As described above, according to the present invention, the following effects can be obtained.

Whether or not smoke is generated by arranging a plurality of pipes in a plurality of monitoring areas and selectively adjusting the stacking method and the opening position of the openings in each of the monitoring areas. At the same time, it becomes possible to easily specify the occurrence position.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a characteristic part of a suction type smoke detection system according to a first embodiment.

FIG. 2 is a schematic configuration diagram showing a suction type smoke detection system.

FIG. 3 is a configuration diagram showing a characteristic part of a suction type smoke detection system according to a second embodiment.

FIG. 4 is a configuration diagram showing a characteristic part of a suction type smoke detection system according to a third embodiment.

[Explanation of symbols]

1: Air sampling pipe, 2: Opening, 3: Smoke detection device, 4: Smoke generation position identification device.

Claims (1)

[Claims] 1. A plurality of pipes arranged to face a plurality of monitoring areas with openings for sucking ambient gas, and smoke detection means connected to each pipe for detecting smoke mixed in the gas. Suction, characterized by comprising smoke generation position specifying means for selectively adjusting a stacking direction of the plurality of pipes and a drilling position of the opening and specifying a smoke generation position by a combination thereof. Type smoke detection system.