JP2002248179A - Fire compartment formation system - Google Patents

Abstract

(57) [Summary] [Problem] To form a fire protection compartment by a water spray pattern for a large space in a building such as a single floor. A fire protection compartment forming system includes a plurality of head rows (3) in which a plurality of heads (4) are arranged in a row direction along a ceiling surface.
a, 3b, fire sections 2a to 2c formed by partitions of head rows, fire detectors 10, 11 installed for each of the fire sections 2a to 2c, and a fire section for forming a fire section when a fire is detected. A control unit (monitoring control panel 12) is provided for supplying pressurized water to the heads 4 of the head rows 3a and 3b and spraying the same to form a spraying pattern for partitioning the fire prevention compartment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire section forming system for forming a fire section in a building by spraying pressurized water from heads arranged on a ceiling surface.

[0002]

2. Description of the Related Art Conventionally, as a device for forming water in the form of a film from a ceiling in a space in a building, there is a smoke prevention compartment device disclosed in Japanese Patent Application Laid-Open No. 4-319368.

[0003] In this smoke prevention compartment device, a nozzle for dropping water in the form of a film is arranged on the ceiling of a space in a building, and in the event of a fire, a pump is operated to send water in a water storage tank to the nozzle. From water to form a film, thereby isolating the space and preventing the diffusion of smoke to other spaces.

[0004] The formation of such a water film not only provides a sufficient smoke-proofing effect, but also allows free movement of people and does not hinder evacuation or rescue. In addition, there is an obstacle in the middle of the water film. Also has a large isolation effect, and the smoke prevention effect does not decline.

[0005]

However, such a conventional apparatus for forming a water film has the following problems.

In the conventional water film formation, the width of the water film that can be formed is determined by the width of the nozzle because of the nozzle structure in which water is dropped in the form of a film. It can be installed in a relatively narrow space such as a corridor that becomes an evacuation passage, but the formation of a large-scale water curtain that divides the floor on the first floor into multiple sections is possible. It was difficult.

Further, since the water film is almost transparent, radiant heat from a flame caused by a fire is transmitted with little attenuation. Even if smoke can be blocked, radiant heat cannot be blocked sufficiently. It was not enough.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire-prevention section forming system for forming a fire-prevention section in a large space in a building such as a single floor by using a water spray pattern.

[0009]

To achieve this object, the present invention is configured as follows.

The fire prevention compartment forming system of the present invention is formed between one or more head rows in which a plurality of heads are arranged in a row direction along a ceiling surface, and between head rows or between a head row and a partition. Fire protection compartments, fire detectors installed for each fire protection compartment, and when an alarm signal from the fire detector is obtained, pressurized water is supplied to the head of a head row for forming a corresponding fire protection compartment. And a controller for forming a spraying pattern for partitioning the fire protection compartment by spraying.

As described above, according to the present invention, a head row including a plurality of heads is provided on the ceiling of a space in a building, and when a fire occurs, pressurized water is supplied from each head of the head row to form a corresponding fire protection section. Are sprayed to form a spray pattern arranged in the direction of the head row. This spray pattern is a water spray pattern obtained by radiating pressurized water from the head, and is formed in a row in the row direction, so that the flame and the hot air flow generated by the fire are reliably shut off, and at the same time, the flame is sprayed. The radiant heat from is also attenuated sufficiently.

Here, the fire detector used in the present invention is a dedicated fire detector that operates at a temperature of 80 ° C. or more and 150 ° C. or less and outputs an alarm signal. Normally, the fire detector for self-fire alarm used in the automatic fire alarm system has an operating temperature of about 60 ° C. to 70 ° C. Use a fire detector to prevent malfunctions.

Further, a plurality of fire detectors for self-fire alarm of the automatic fire alarm system are installed in the fire prevention compartment, and in this case, the control unit comprises:
When an alarm signal (AND condition) of two or more self-fire alarms installed in the same fire compartment is obtained, pressurized water is sprayed from the heads of the head row for forming the corresponding fire compartment. Let it. This prevents a malfunction of the system due to a false alarm from the fire detector.

Further, a fire detector for self-fire alarm of the automatic fire alarm system and a dedicated fire sensor of the fire protection zone formation system are installed in the fire prevention zone. In this case, the control unit controls the self-fire installed in the same fire zone. When an alarm signal is obtained from both the alarm fire sensor and the dedicated fire sensor, spray pressurized water from the heads of the head row to form a corresponding fire protection section,
Further, malfunction of the system is reliably prevented. The dedicated fire detector outputs an alarm signal at a temperature higher than the operating temperature of the sprinkler head.

As another form, a fire detector for self-fire alarm of an automatic fire alarm system is installed in a fire protection zone and a sprinkler head is installed. In this case, the control unit is installed in the same fire protection zone. When both the alarm signal from the fire alarm fire detector and the alarm signal from the sprinkler head are obtained, the pressurized water may be sprayed from the heads of the head row for forming the corresponding fire protection compartment. Good.

The control unit according to the present invention activates a timer to broadcast a warning broadcast for a set time when it is determined from the alarm signal that the watering condition is satisfied. Is sprayed, and if there is no spraying stop operation, pressurized water is sprayed from the heads of the head rows located on both sides of the fire protection compartment when the set time of the timer has elapsed.

As described above, prior to the formation of a fire prevention section by spraying from the head, a caution broadcast is used to alert the user, time for preparations such as evacuation is secured, and spraying can be reliably stopped in a non-fire situation. To do.

Further, the control unit determines the manual spraying operation to start spraying the pressurized water, and also determines the manual stop operation during spraying from the heads of the head row to stop spraying the pressurized water. ing.

Further, a waterproof floor structure for collecting and draining water sprayed from the head is provided on the floor of the floor where the fire protection compartment is formed. For example, by lowering the floor surface of a part of the floor where a plurality of fire protection compartments are formed and making it a waterproof floor structure, it is not necessary to make the entire floor a waterproof floor structure.

As the head used in the present invention, a spray head for spraying water having an average particle diameter of 500 microns or less and 50 microns or more is used. This average particle size satisfies the two conditions that the flame and the hot air flow can be effectively shut off and that the hot air flow is not flown. The amount of water from the head is
2 to 8 liters per minute per meter of head row
0 liter.

A plurality of heads may be arranged in one or a plurality of rows. In this case, for example, by staggering the heads of adjacent head rows,
It is possible to minimize the generation of the gaps in the spray pattern between the heads.

As the head used in the fire protection compartment forming system of the present invention, a spray head that forms a spray pattern having a substantially conical distribution is used. Further, the head is characterized in that a deflector for radiating water is provided in a gap portion near the ceiling surface of the spray pattern of the heads adjacent in the row direction.

Further, a hanging wall having a height corresponding to a gap portion near the ceiling surface of the spray pattern of the heads arranged in the row direction may be provided.

Also, the ceiling portion where the head rows are arranged may be raised so that there is no gap near the ceiling surface of the spray pattern of the heads arranged in the row direction. Further, the heads have a distribution pattern of a substantially fan-shaped distribution. In this case, the head rows are arranged such that the distribution pattern of the fan-shaped distribution is overlapped with an offset angle with respect to the head row direction.

In the radiation direction of the head, there is provided a cover which falls by the force of the radiated water. The cover protects the head and provides a design effect without impairing the aesthetic appearance. This cover is mounted on the head embedded in the ceiling surface.

The head has a descent mechanism for lowering the water spout below the ceiling surface during water sprinkling.

[0027]

FIG. 1 is an explanatory diagram showing an embodiment of a system configuration of a fire protection compartment forming system according to the present invention.

FIG. 1 shows a case in which a fire protection compartment forming system according to the present invention is constructed by taking one floor 1 of a building as an object compartment as an example in this embodiment.
For floor 1 of the building, 2 in this embodiment
One head row 3a, 3b is arranged along the ceiling surface, and three fire protection sections 2a, 2b, 2c are virtually formed by the partition walls on both sides and the head rows 3a, 3b.

In the head rows 3a and 3b, the pitch interval at which the heads 4 are arranged along the ceiling surface may be selected from a predetermined value in the range of 0.5 m to 2.0 m. The plurality of heads 4 provided in the head rows 3a and 3b are connected to branch pipes 7a and 7b on the secondary side of the selective radiation valves 8a and 8b by falling pipes. As the selective radiation valves 8a and 8b, an electric valve or a simultaneous release valve can be used.

The supply of pressurized water to the head 4 is performed from a fire pump 5. A water supply main pipe 6 is set up from the fire pump 5 in the height direction of the building, and a branch pipe 7 is provided for each floor.
Are drawn out, and the branch pipe 7 drawn out to the floor 1 shown in the figure is branched to the head rows 3a and 3b to be branched out.
a and 7b are connected.

The branch pipes 7a and 7b are provided with a selective radiation valve 8
a, 8b are provided, and gate valves 9a, 9b
Is provided. Each of the three fire protection compartments 2a, 2b, 2c partitioned by the arrangement of the head rows 3a, 3b has a dedicated connection connected to a sensor line drawn from the monitoring control panel 12 of the fire protection compartment formation system of the present invention. A fire detector 10 and a fire detector 11 for self-fire alarm connected to a detector line drawn from a fire receiving panel 13 of a separately provided automatic fire alarm system are provided.

Here, the fire detector 11 for self-fire alarm is 60 to 7
It has an operating temperature of about 0 ° C., whereas the dedicated fire detector 10 used in the fire protection compartment forming system of the present invention has
Has an operating temperature set in the higher range of 80 ° C. or more and 150 ° C. or less. For this reason, in a normal fire, first, the fire detector 11 for self-fire alarm is activated, and then the dedicated fire detector 10 is activated.

When the monitoring control panel 12 receives a fire signal from the dedicated fire detector 10 while receiving a fire transfer signal from the fire receiving panel 13 due to the operation of the fire detector 11 for self-fire alarm, the monitoring control panel 12 When the fire alarm for fire alarm 11 is activated and the fire protection compartment in which the dedicated fire detector 10 is activated is the same, the selective radiation valve 8a or 8b provided corresponding to this fire protection compartment is controlled to open, and at the same time, the pump is operated. 5 is operated to supply pressurized water to the head rows 3a and / or 3b arranged on one side or both sides of the fire prevention section in which the fire has occurred, and to spray from the head 4.

More specifically, when a fire is detected in the fire protection section 2a, the monitoring control panel 12 controls the selection radiation valve 8a to open, sprays pressurized water from the head 4 of the head row 3a, and sets the fire protection section 2a. Is formed by the partition wall on the side opposite to the water spray from the head.

When a fire is detected in the fire protection section 2b, the monitoring and control panel 12 controls both the selective radiation valves 8a and 8b to open and sprays pressurized water from the heads 4 of the head rows 3a and 3b to prevent fire. The section 2b is partitioned by a spray pattern. Further, regarding the fire prevention section 2c, the selective radiation valve 8b is controlled to be opened by the monitoring control panel 12, and pressurized water is sprayed from the heads 4 of the head row 3b to form the fire prevention section 2c.

Each of the fire protection compartments 2a, 2b, 2c is provided with on-site operation panels 14a, 14b, 14c. The on-site operation panels 14a to 14c start spraying of pressurized water from the head by manual operation. Spraying can be stopped and spraying can be stopped during the warning broadcast.

As will be described later, the monitoring control panel 12 does not control the opening of the selective radiation valves 8a and / or 8b immediately when the sprinkling condition is satisfied. At the same time, the emergency fire prevention equipment (not shown) is used to activate the fire protection zone forming system, and broadcast a warning that water is sprayed from the head, and open the selective emission valves 8a and / or 8b after the elapse of the time set by the timer. By controlling, spraying of pressurized water from the head 4 is performed.

The operation of the pump 5 is as follows. The pump 5 is filled with pressurized water in advance from the pump 5 to the selective radiation valves 8a and 8b, and the pressure drop of the pressurized water due to the opening control of the selective radiation valves 8a and 8b is controlled by a pressure switch. A method of detecting and starting the pump 5 based on this detection signal may be used.

FIG. 2 is an explanatory view of the head 4 used for each of the head rows 3a and 3b in FIG. 1, and FIG.
Is a half section of the head 4, and FIG. 2B is a bottom view as viewed from the nozzle hole side.

The head 4 has an inflow port 4b opened in the upper part of the nozzle body 4a, and incorporates an X-type whirler 4c following the inflow port 4b. The X-type whirler 4c is a member for turning the pressurized water flowing from the inflow port 4b. The pressurized water that has been swirled by the X-type whirler 4c is ejected to the outside from the nozzle hole 4d at the tip of the nozzle body 4a, and creates a spray pattern having a substantially conical distribution in the form of a mist.

For this reason, the head 4 is called a full-cone nozzle or a cone spray nozzle. The thread 4e is used to connect to a falling pipe from the branch pipe.

FIG. 3 is an explanatory diagram of a spray pattern by the nozzles 4 arranged at regular intervals as in the head rows 3a and 3b in FIG. FIG. 3A is a plan view of the spray pattern, and FIG. 3B is a side view.

The spray pattern 15 from the nozzle 4 is
The spray patterns 15 have a substantially conical distribution, and the pitch intervals of the heads 4 are set in the range of 0.5 to 2.0 m, so that the adjacent spray patterns 15 are continuously formed in the head row direction without gaps. Is done.

FIG. 4 is an explanatory diagram of the operation of forming a fire protection section by the spray pattern 15 from the head 4 in FIG. In FIG. 4, the spray pattern 15
When the pressurized water is sprayed, the hot air flow 20 from the flame 18 caused by the fire spreads along the ceiling surface 16 and the hot air flow 2
0 is drawn into the descending airflow of the spray pattern 15 from the head 4, and the hot airflow does not flow outward beyond the spray pattern 15. Further, the radiant heat 19 from the flame 18 is sufficiently attenuated by the spray droplets of water from the head 4 when passing through the spray pattern 15.

The inventors of the present invention conducted a verification experiment on the fire protection compartment forming system as shown in FIG. 1, and found that the average particle diameter of water sprayed from the head 4 should be 500 microns or less and 50 microns or more. . This average particle diameter can be said to be an average particle diameter that can effectively block a hot air flow from a flame due to a fire when water is sprayed from the head 4 and that is not swept away by the hot air flow.

It has been confirmed that a water spray amount per meter of head row required for the spray pattern from the head 4 is effective if it is in a range of 2 liters to 80 liters per minute. Under such conditions, in addition to the blocking action by drawing in the hot airflow 20 in FIG.
The radiant heat 19 could be blocked from 70% to 90%.

FIG. 5 is a flowchart of a control process in the fire protection compartment forming system of the present invention by the monitoring control panel 12 of FIG.

In FIG. 5, first, in step S1, the presence or absence of an alarm signal from the self-fire alarm 11 is checked.
When it is determined that the alarm signal 1 is present, the alarm signal of the dedicated fire detector 10 is checked in step S2.

When it is determined that the fire alarm of the dedicated fire detector 10 is present, it is determined that the spraying condition is satisfied, and the process proceeds to step S3, where the fire alarm section of the dedicated fire detector and the fire detector of the self-fire alarm are fired. A fire occurrence section is detected from the report section, and in step S4, a head row for performing water spraying to form a fire prevention section is determined. Subsequently, the pump 5 is started in step S5, and the spray timer is started in step S6.

If the spraying timer has been started, step S
In step 7, a scatter broadcast for calling attention is activated. For example, 30 seconds is set as the setting time of the scatter timer. During the scatter broadcast during the operation of the scatter timer, the restoration signal output by the restoration operation on the monitoring control panel in step S8, and the scatter output by the dispense stop operation on the monitoring control panel 12 and the on-site operation panel 14 in step S9. The cancel signal and the end of the timer in step S10 are checked. In step S8, if there is a restoration signal due to the restoration operation, the process returns to step S1. Also, if there is a spray stop signal by the spray stop operation in step S9, the processing of steps S8 to S9 is repeated,
If there is a recovery signal in step S8, the process returns to step S1.

If there is no recovery signal by the end of the timer in step S10, and if there is no spraying stop signal, the flow advances to step S11 to open the electric valve of the selected radiation valve to start spraying. During spraying, the presence or absence of a spray stop signal is checked in step S12. The check of the spraying stop signal includes a spraying operation at the monitoring control panel 12 and a spraying stop operation at the local operation panels 14a to 14c.

When the spraying stop signal is determined in step S12, the electric valve used for the selective radiation valve 8a is controlled to close in step S13 to stop spraying. Step S13
After the spraying is stopped at step S14, the spraying stop signal is checked at step S14, and the restoration signal by the restoration operation is checked at step S15.

If there is no recovery signal, step S13
Steps S14 and S15 are repeated, and if the fire stops again after the spraying is stopped and the spraying stop signal is released, the process proceeds from step S14 to step S11.
The opening of the selective radiation valve is controlled so that spraying can be started again. If there is a restoration signal from the restoration operation in step S15, the process returns to step S1.

In the control by the monitoring control panel 12 of FIG. 5, as shown in the embodiment of FIG.
Spraying is performed when both the fire signal 11 for the self-fire alarm and the fire alarm signal for the dedicated fire sensor 10 provided in 2c are obtained, that is, when the AND condition is satisfied.
Other methods of spray control include, for example, the following. (1) Two or more fire detectors 11 for self-fire alarm are provided in a fire prevention section, and spraying is performed when the AND conditions of the alarm signals of the fire detectors 11 for self-fire alarm are satisfied. (2) Spraying is performed by an alarm signal generated by the operation of only one of the dedicated fire detectors 10 whose operating temperature is 80 ° C. or higher and 150 ° C. or lower. (3) When the sprinkler head of the sprinkler fire extinguishing equipment is installed in the target section, spraying is performed under an AND condition between the signal from the fire detector 11 for self-fire alarm and the operation (report) signal of the sprinkler head. Do.

The operating temperature of the sprinkler head is
Since the temperature is 72 ° C., the condition is more severe than the condition (1).

FIG. 6 is a system configuration diagram showing another embodiment of the fire protection compartment forming system according to the present invention. In this embodiment, the arrangement of the heads in one head row is constituted by two rows of nozzle arrangements. It is characterized by having done.

In FIG. 6, the floor 1 is virtually formed in three fire protection sections 2a to 2c, similarly to the embodiment of FIG. 1, and a head row between the fire protection sections 2a and 2b, in this embodiment, In addition, head rows 3a and 3c are provided. It should be noted that one head row 3b is provided between the fire protection sections 2b and 2c as in the embodiment of FIG.

In the two head rows 3a and 3c, the branch pipe 7a on the secondary side of the selective radiation valve 8a is further branched into branch pipes 21a and 21b.
A plurality of heads 4 are mounted on a and 21b. The connection of the heads 4 to the branch pipes 21a and 21b is a so-called staggered arrangement in which the heads 4 of the head row 3c are shifted by a half pitch from the heads 4 on the head row 3a side. The other configuration is the same as that of the embodiment of FIG.

FIG. 7 shows two head rows 3a and 3 shown in FIG.
It is explanatory drawing of the spraying pattern at the time of spraying from the head of c. FIG. 7A is a plan view at the time of spraying, and FIG. 7B is a side view.

As is clear from FIG. 7A, since the head rows 3a and 3c are arranged in two rows and the heads 4 are arranged in a staggered manner with a half pitch shift in the row direction.
The central portion of the scatter pattern 15b of the head row 3c is located at the overlapping portion of the scatter pattern 15a of the head row 3a, and the thickness of the scatter pattern when viewed from the direction crossing the head rows 3a and 3c is doubled. As is clear from B), the arrangement of the spray patterns 15a and 15b becomes dense due to the staggered arrangement, so that the strength as a fire protection section formed by the spray patterns can be greatly increased.

FIGS. 6 and 7 show an example in which two rows are arranged as the head rows forming one side of one fire protection section. However, three rows, four rows, etc. If necessary, the number of head rows can be appropriately set.

Here, the floor 1 on which the fire protection compartment forming system of the present invention shown in FIG. 1 and FIG.
As a floor structure, one corner of the floor is lowered to the wall side with a gentle slope with respect to the normal floor, and a pool of water sprayed from the head 4 is created here.
A drain is provided in the water pool, and the water collected in the drain is returned to the water storage tank and can be circulated from the pump 5.

As described above, by providing a scattered water pool at one corner of the floor 1 with a gentle slope, a waterproof floor structure may be provided only at the floor at the water pool, and other floors may be provided. Since it is not necessary to adopt a waterproof structure, the waterproofing work can be greatly simplified and the construction cost can be reduced as compared with the case where a waterproof structure is applied to the entire floor.

FIG. 8 is an explanatory view showing another embodiment of the head used in the present invention. This embodiment is characterized in that a deflector is mounted on the head. 8A is a front view, FIG. 8B is a bottom view as viewed from the nozzle hole side, and FIG. 8C is a side view.

The head 4 has, for example, substantially the same structure as that of FIG. 2, and a deflector 22 is newly attached to the head 4 in this embodiment. The deflector 22 has a substantially U-shape that is open at the bottom, and a contact plate 23 projects from an outer portion of the head 4 where the spray pattern 15 comes into contact with the nozzle hole 4c as shown in FIG. A triangular bottom notch 24 is formed at the base of the plate 23. The bottom notch 24 continues to the side notch 25 as shown in the side view of FIG.

As described above, the deflector 22 is
The spray pattern 15 discharged from the nozzle hole 4c of the head 4 rebounds by hitting the backing plate 23 of the deflector 22, and is sprayed laterally from the side cutout 25 provided on the side surface. At the same time, since the side notch 25 continues to the bottom notch 24, the spray pattern that has been flipped up in the lateral direction goes downward from the bottom notch 24, and closes the gap with the original spray pattern 15.

FIG. 9 shows another embodiment of the head of the present invention provided with a deflector. FIG. 9A is a front view, and FIG.
9B is a bottom view, and FIG. 9C is a side view. In this embodiment, a cantilevered deflector 26 is attached to the head 4. That is, the deflector 26 is
As seen from the side view of (C), the backing plate 27 projects from the lower part by a cantilever structure from the upper part.

As shown in FIG. 9B, the backing plate 27 is located on one side of the nozzle hole 4c of the head 4, and a part of the spray pattern 15 discharged from the nozzle hole 4c hits the backing plate 27. In the front view of FIG.
To spread the spray pattern to the side.

FIG. 10 shows a spray pattern in the head 4 with the deflector shown in FIGS. That is, FIG. 10A is a plan view of the scatter pattern, and FIG. 10B is a front view of the scatter pattern. In the head 4 with the deflector, in addition to the original spray pattern 15, the spray pattern 30 which is expanded in the lateral direction by providing the deflector is provided.
have.

FIG. 11 shows a spray pattern when the heads 4 with the deflector having the spray pattern of FIG. 10 are arranged as a head row.

FIG. 11 (A) is a plan view and FIG. 11 (B) is a front view. In addition to the original spray pattern 15 of the deflector-equipped head 4, a spray pattern 30 spreading laterally by the deflector is obtained. The gap between the original spray pattern 15 and the adjacent spray pattern 15 on the side closer to the ceiling surface 16 is formed by the deflector water discharge pattern 30.
Can be filled with

Therefore, in the head 4 having the deflector, the transmission of the radiant heat from the gap portion on the ceiling surface side of the adjacent spray pattern can be further prevented as compared with the case of the head without the deflector, and the radiant heat can be prevented. The blocking effect is further enhanced. Also, the hot airflow flowing along the ceiling can be reliably shut off.

FIG. 12 shows another embodiment of the head 4 used in the present invention. This embodiment is characterized in that a main nozzle and an auxiliary nozzle are provided.

FIG. 12A is a plan view, and FIG. 12B is a bottom view. The head 4 is provided with a main nozzle 31 at the lower part of the nozzle body, while an auxiliary nozzle 32 is provided on the side of the nozzle body.
Is provided. Therefore, the pressurized water flowing from the upper part of the head is sprayed downward substantially in a conical shape by the main nozzle 31 and at the same time is sprayed laterally from the auxiliary nozzle 32.

FIG. 13 is a scatter pattern of the head 4 with the auxiliary nozzle. FIG. 13 (A) is a plan view and FIG. 13 (B).
Is a front view. In this spray pattern, the original spray pattern 15 is obtained from the main nozzle of the head 4,
In addition to this, a spray pattern 33 is obtained, for example, on the right side from the auxiliary nozzle 32 that is open on the side surface of the head 4.

FIG. 14 is an explanatory diagram of a scatter pattern when a head row is constituted by the heads 4 having the auxiliary nozzles in FIG.

FIG. 14 (A) is a plan view, and FIG. 14 (B) is a front view.
In addition to the above, a spray pattern 33 is obtained on the right side from the auxiliary nozzle on the side surface of the head 4,
The gap between 5 and the ceiling surface 16 can be filled.

FIG. 15 is an explanatory view of another embodiment for eliminating a gap portion on the ceiling surface side of the spray pattern from the head. In this embodiment, a hanging wall 34 is provided from the ceiling surface to the side of the head 4 arranged along the head row, whereby the ceiling surface 1 of the scatter pattern 15 from the head 4 is provided.
The gap on the 6 side is closed. The arrangement interval of the hanging wall 34 with respect to the head row in which the heads 4 are arranged is as follows.
The hanging wall 34 may be arranged within 5 m.

FIG. 16 is an explanatory view of another embodiment for eliminating a gap on the ceiling side of the spray pattern from the head 4. In this embodiment, the head storage groove 3 which is higher than the ceiling surface 16 is provided on the portion of the ceiling surface 16 where the head rows are arranged.
5 are formed, and the heads 4 are arranged in the head storage grooves 35 to form a head row. A depth of the head storage groove 35 with respect to the ceiling surface 16 of about 30 to 50 cm is sufficient.

FIG. 17 is an explanatory diagram of a spray pattern when the head 4 is disposed in the head storage groove 35 higher than the ceiling surface 16 in FIG. FIG. 17A is a plan view and FIG.
Is a front view.

As described above, the ceiling surface 16 is 30 to 50 c
By providing the head storage groove 35 having a height of m and arranging the heads 4 therein to form a head row, the blowing portion of the spray pattern 15 from the head 4 is located inside the head storage portion 35 higher than the ceiling surface 16. Since the gap portion of the spray pattern 15 is located in this portion, no gap portion is formed in the spray pattern 15 in a portion below the ceiling surface 16. In addition, the configuration in which the heads 4 are arranged in the head storage grooves does not require a hanging wall unlike the above-described embodiment, so that the appearance is good.

FIG. 18 shows another embodiment of the head used in the present invention. In this embodiment, the nozzle having the spray pattern of the substantially conical distribution of the previous embodiments is like a fan. A fan-shaped spray head having a narrow spray pattern is used.

FIG. 18 (A) is a plan view, and FIG. 18 (B) is a front view. As shown in FIG. 18 (A), the fan-shaped spraying head 40 has a narrow width in plan view and A long fan spray pattern can be obtained. With respect to such a fan-shaped spraying head 40, a reference line 42 in the longitudinal direction of the fan-shaped spraying head 40 is offset by an offset angle θ from a column-wise reference line 41 in which the heads 40 are arranged between adjacent fan-shaped spraying heads 40. The heads are staggered so that the fan-shaped spray patterns are overlapped without any gap.

FIG. 19 is an explanatory view showing an installation state of a head used in the present invention with respect to a ceiling surface, wherein a head is provided with a cover for protection and design.

FIG. 19A is a sectional view, and FIG. 19B is a bottom view. The head 4 is fixed to the opening 45a of the ceiling board 45 with a screw at the tip of the downcomer pipe 44 from the branch pipe. In this embodiment, the head 4 uses the one shown in FIG. I have.

A cover 46 made of plastic or the like is attached to a head portion composed of the head 4 and the deflector 22. The cover 46 has a leaf spring 4 inside.
7 can be attached by fitting the leaf spring 47 to the deflector 22.

As described above, by attaching the cover 46 to the head from below, the cover 4 does not damage the head 4 and the deflector 22 even when an object is hit during construction. Further, since the head 4 and the deflector 22 are not exposed on the ceiling surface by attaching the cover 46, the appearance is not impaired and the design is good.

On the other hand, at the time of formation of a fire prevention section due to a fire, when pressurized water is radiated downward from the nozzle 4, the cover 46 falls under this force and can be sprayed.

FIG. 20 shows another embodiment in which the head is provided with a cover. FIG. 20 (A) is a sectional view and FIG. 20 (B) is a bottom view. In this embodiment, the ceiling board 4
The head 4 provided with the deflector 22 is screwed and fixed to the falling pipe 44 in such a manner as to be embedded in the opening 45a of the fifth tube 5.

For this reason, the ceiling board 4 of the deflector 22
The amount of protrusion from 5 is very small. A cover 48 is attached to the deflector 22. Cover 4
Reference numeral 8 denotes a thinner size corresponding to the amount of the deflector 22 protruding from the ceiling board 45, and a leaf spring 49 is mounted inside and fixed to the deflector 22.

Also in this case, by attaching the cover 48 to the head portion, it is possible to prevent the deflector 22 from being damaged by hitting an object during construction and the like, and the cover 48 allows the opening of the head portion and the ceiling board 45 to be opened. By covering 45a, the appearance of design can be improved without impairing the aesthetic appearance. When the radiation from the head 4 is further performed, the cover 48 falls under the force of the pressurized water due to the radiation.

FIG. 21 shows another embodiment in which a cover is provided on the head portion. This embodiment is characterized in that the head portion is completely accommodated in the ceiling in normal times. .

FIG. 21A is a side sectional view, and FIG.
Is a bottom view, and in this embodiment, the deflector 2
2 is connected to a falling pipe 57 in the ceiling via a lowering mechanism 52.

The lowering mechanism 52 accommodates a slidable inner cylinder 54 in an outer cylinder 53 fixed to a falling pipe 57 by screws. A spring 55 is provided between the inner cylinder 54 and the outer cylinder 53. Are stored, and a seal 56 is attached to the outer peripheral surface of the storage portion of the inner cylinder 54. When the pressurized water is not supplied to the falling pipe 57, the inner cylinder 54 is pulled up by the force of the spring 55 as shown in the figure.

In this state, the deflector 22 of the head portion is located on the ceiling surface side of the opening 45a of the ceiling board 45.
It is completely embedded. For this reason, a plate type cover 50 that is in close contact with the ceiling surface side of the ceiling board 45 is attached to the deflector 22 by a leaf spring 51 with respect to the head portion. Since the cover 50 can be formed as a flat plate, there is no protrusion of the head portion from the ceiling board 54, no object hits, the appearance is not impaired, and the appearance is further improved for design. good.

When the pressurized water is radiated from the head portion due to a fire, pressurized water is supplied from the pump side to the falling pipe 57, the inner cylinder 54 is pushed down against the spring 55, and the deflector 22 and the head 4 The ceiling board 45 descends to a position corresponding to the opening 45a equivalent to that in FIG. Further, the cover 56 attached to the deflector 22 is dropped by the leaf spring 51 by the radiation of the pressurized water from the nozzle 4.

In the above embodiment, the cover is attached to the head, for example, the deflector. However, the cover may be attached to the ceiling board or the opening of the ceiling board.

In the above-described embodiment, a fire prevention section is formed by arranging head rows in a relatively large space such as a building floor. However, the formation of a fire section by a normal wall is taken as an example. The formation of a fire prevention compartment by spraying pressurized water from the head of the present invention may be appropriately combined. Further, in the above embodiment, the conical shape and the fan shape are used as examples of the spray pattern from the head, but other spray patterns, for example, a circular shape, an elliptical shape, a quadrangular pyramid shape, etc. good. The present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

[0099]

As described above, according to the present invention, a fire protection section can be formed in a large space in a building such as a single floor by a spray pattern of water spray from a head. Therefore, there is no need to partition the inside of the building with physical walls in order to form a fire compartment, and the large space inside the building can be used as a single space during normal times, and the head is used when a fire occurs. By forming a spray pattern by spraying the pressurized water, a specific fire prevention section is formed, and the spread and spread of fire can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of a system configuration of the present invention.

FIG. 2 is an explanatory view of a head used in the present invention.

FIG. 3 is an explanatory diagram of a spray pattern of the head row in FIG. 1;

FIG. 4 is an explanatory diagram of a partitioning action by a head spray pattern according to the present invention.

FIG. 5 is a flowchart of control of formation of a fire prevention section by the control plate of FIG. 1;

FIG. 6 is an explanatory diagram of a system configuration of the present invention in which heads are arranged in a staggered manner in two rows.

FIG. 7 is an explanatory view of the spray pattern of FIG. 6;

FIG. 8 is an explanatory view of an embodiment of a head with a deflector used in the present invention.

FIG. 9 is an explanatory view of another embodiment of a head with a deflector used in the present invention.

FIG. 10 is an explanatory view of a spray pattern by the head with a deflector of FIGS. 8 and 9;

FIG. 11 is an explanatory diagram of a spray pattern of a head row by a head with a deflector.

FIG. 12 is an explanatory view of a head having a main nozzle and an auxiliary nozzle.

FIG. 13 is an explanatory diagram of a scatter pattern by the head of FIG. 12;

FIG. 14 is an explanatory diagram of a spray pattern of a head row by the head of FIG. 12;

FIG. 15 is an explanatory diagram of a spray pattern of a head row provided with hanging walls.

FIG. 16 is a structural explanatory view of a head row provided with a storage groove on a ceiling surface.

FIG. 17 is an explanatory diagram of the spray pattern of FIG. 16;

FIG. 18 is an explanatory view of a head row using a fan-shaped spray pattern head.

FIG. 19 is an explanatory view of a head with an exposed ceiling cover.

FIG. 20 is an explanatory view of a head equipped with a ceiling embedded type cover.

FIG. 21 is an explanatory diagram of a head having a ceiling embedded type cover attached to a head having a descending mechanism.

[Explanation of symbols]

 1: Floor 2a-2c: Fire prevention section 3a-3c: Head row 4: Head 5: Pump 6: Water supply main pipe: 8a, 8b: Selective radiation valve (electric valve) 9a-9c: Gate valve 10: Exclusive fire detector 11: Fire detector for self-fire alarm 12: Monitoring and control panel 13: Fire receiving panel 14a to 14c: On-site operation panel 15: Scattering pattern 16: Ceiling surface 17: Floor surface 18: Flame 19: Radiant heat 20: Hot air flow 21a , 21b: branch pipes 22, 26: deflectors 23, 27: backing plate 24: bottom notch 25: side notch 28: notch 31: main nozzle 32: auxiliary nozzle 33: auxiliary pattern 34: hanging wall 35: head storage groove 40 : Fan-shaped spraying heads 44, 57: Falling pipe 45: Ceiling board 45a: Opening 46, 48, 50: Cover 47, 49, 51: Leaf spring 52: Lowering mechanism 53: Outer cylinder 54: Inner cylinder 5 : Spring 56: seal

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G08B 17/00 G08B 17/00 J (72) Inventor Hitoshi Kurioka 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Shinji Kasai 1-2-7 Moto Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Izumi Doihara 1-2-2 Moto-Akasaka, Minato-ku, Tokyo 7 Kashima Construction Co., Ltd. (72) Inventor Toshihide Tsuji 2-10-4 Kamiosaki, Shinagawa-ku, Tokyo Hochiki Co., Ltd. (72) Inventor Hiroji Okada 2-10 Kamiosaki, Shinagawa-ku, Tokyo No. 43 Inside Ho Chiki Co., Ltd. (72) Tatsuya Hayashi Inventor F-term (reference) 2E189 CA07 CA09 CC01 CE07 CG01 CG07 KB05 KB07 MB07 5G405 AA01 AB01 CA29

Claims (21)

[Claims] Claims: 1. A head row in which a plurality of heads are arranged in a row direction along a ceiling surface, a fire prevention section formed between the head rows or between a head row and a partition wall, A fire detector installed for each section, and when an alarm signal from the fire detector is obtained, pressurized water is supplied to the heads of a head row for forming a corresponding fire prevention section and sprayed to spread the fire. And a control unit for forming a spray pattern for partitioning the compartments. 2. The fire protection compartment forming system according to claim 1, wherein the fire detector is a dedicated fire detector that operates at a temperature of 80 ° C. or more and 150 ° C. or less and outputs an alarm signal. Fire compartment formation system. 3. The fire-prevention compartment forming system according to claim 1, wherein a plurality of self-fire-detection fire sensors of an automatic fire alarm system are installed in the fire prevention compartment, and the control unit is installed in the same fire prevention compartment. A fire section formation system, wherein pressurized water is sprayed from a head of a head row for forming a corresponding fire section when two or more fire signals for self-fire reports are obtained. 4. The fire protection zone forming system according to claim 1, wherein a self-fire alarm fire sensor of the automatic fire alarm system and a dedicated fire sensor of the fire zone formation system are installed in the fire zone. When an alert signal is obtained from both the self-fire alarm and the dedicated fire sensor installed in the same fire compartment, the head of the head row for forming the corresponding fire compartment is obtained. A fire protection compartment forming system, which sprays pressurized water. 5. The fire protection compartment forming system according to claim 4, wherein the dedicated fire detector outputs an alarm signal at a temperature higher than the operating temperature of the sprinkler head. 6. The fire protection compartment forming system according to claim 1, further comprising: installing a fire detector for self-fire alarm of the automatic fire alarm system in the fire protection compartment, and installing a sprinkler head.
The controller is configured to form a corresponding fire protection section when an alarm signal from the self-fire alarm fire detector and an alarm signal from the sprinkler head installed in the same fire section are obtained. A pressurized water is sprayed from the heads of the head row. 7. The fire-prevention compartment forming system according to claim 1, wherein the control unit activates a timer when it determines that the spraying condition is satisfied based on the alarm signal, and sets the timer to a predetermined time. During the caution broadcast, if there is a spray stop operation during the warning broadcast, the spray of pressurized water is stopped, and if there is no spray stop operation, the pressurized water is sprayed from the head of the head row at the time when the timer set time has elapsed. A fire compartment formation system characterized by the following. 8. The fire protection compartment forming system according to claim 1, wherein the control unit determines a manual spraying operation and starts spraying of pressurized water, and performs a manual stop operation during spraying from the heads of the head row. A fire prevention compartment forming system, characterized in that spraying of pressurized water is stopped by determining. 9. The fire protection compartment forming system according to claim 1, wherein a waterproof floor structure for collecting and draining water sprayed from the head is provided on a floor surface of the floor where the fire protection compartment is formed. Characterized fire protection compartment forming system. 10. The fire protection compartment forming system according to claim 1, wherein the head is a spray head for spraying water having an average particle diameter of 500 microns or more and 50 microns or more. 11. The fire protection compartment forming system according to claim 1, wherein the amount of water sprayed from the head is one of the head rows.
A fire compartment formation system characterized by a rate of 2 to 80 liters per minute per meter. 12. The fire protection compartment forming system according to claim 1, wherein a plurality of heads are arranged in one or more rows in the head row. 13. A fire-prevention compartment forming system according to claim 12, wherein when a plurality of heads are arranged in a plurality of rows as heads in the head row, the heads in adjacent head rows are arranged in a staggered manner. Characterized fire protection compartment formation system. 14. A fire protection compartment forming system according to claim 1, wherein said head is a spray head for forming a spray pattern having a substantially conical distribution. 15. The fire protection compartment forming system according to claim 1, wherein the head is provided with a deflector for radiating water to a gap portion near a ceiling surface of a spray pattern of the heads adjacent in the row direction. Fire compartment formation system. 16. A fire protection compartment forming system according to claim 1, further comprising a hanging wall having a height corresponding to a gap portion near a ceiling surface of the spray pattern of the heads arranged in the row direction. Compartment formation system. 17. The fire protection compartment forming system according to claim 1, wherein a ceiling portion on which the head row is arranged is raised,
A fire compartment forming system, wherein a gap portion near a ceiling surface of a spray pattern of heads arranged in a row direction is eliminated. 18. The fire protection compartment forming system according to claim 1, wherein the head has a substantially fan-shaped distribution pattern, and the head row has an offset angle with respect to the head row direction in the fan-shaped distribution pattern. A fire compartment forming system, wherein each head is arranged so as to overlap each other. 19. The fire protection compartment forming system according to claim 1, further comprising a cover that falls in the radial direction of the head by the force of the emitted water. 20. The fire protection compartment forming system according to claim 19, wherein the cover is mounted on the head embedded in a ceiling surface. 21. The fire protection compartment forming system according to claim 20, wherein the head is provided with a descent mechanism for lowering a water spout below a ceiling surface when water is sprinkled.