JPH0423566Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a nozzle device for an automatic fire extinguishing system that automatically changes the opening degree of the nozzle nozzle in response to commands from the control unit and controls the emission state of the extinguishing agent or extinguishing liquid. Regarding.

In recent years, fire detectors have become capable of detecting the occurrence of a fire as well as the location of the fire source, and automatically extinguish the fire by directing the radiation nozzle to the detected location of the fire source and spraying extinguishing agent or extinguishing fluid. Research and development of automatic fire extinguishing systems is being promoted.

In the conventional radiation nozzle of such automatic fire extinguishing system, the nozzle that emits the extinguishing agent is shaped to spray the extinguishing agent with a predetermined spread, and if the spread angle of the nozzle is set narrow, the extinguishant Although the radiation distance can be increased, the extinguishing agent will be emitted vigorously against fire sources that are close to the fire source.
If the fire source is oil-based, spread the fire source,
There was a risk of the fire spreading. Furthermore, if the spread angle of the nozzle is set wide, the extinguishing agent will be sprayed over a wide range of fire sources that are far away, which is unreasonable as it will cause more extinguishing agent to be sprayed than necessary.

For this reason, a nozzle device equipped with a mechanism for changing and controlling the opening degree of the injection port of the radiation nozzle has been proposed, but it is only operated by a person.
Conventionally, there has been no technology for automatically, rather than manually, controlling the change in the opening of the injection port of a nozzle device in an automatic fire extinguishing system. Therefore, in the conventional nozzle device, there has been a problem that it interferes with initial fire extinguishing and actual fire extinguishing activities.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a nozzle device for an automatic fire extinguishing system that efficiently emits a fire extinguishing agent to a fire source to extinguish the fire.

In order to achieve this purpose, the present invention calculates the position of the fire source in the control unit based on the detection information from the detector that detects the fire source, and uses the control signal from the control unit that is output according to the calculation result. In the nozzle device of an automatic fire extinguishing system that sprays extinguishing agent by changing the radiation angle in the horizontal and vertical directions based on the control signal of the control unit, It was designed to be adjusted.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a partially sectional view showing an enlarged main part of the present invention in FIG. 1.

First, to explain the configuration, in FIG. 1, 1 is an automatic fire extinguishing system, and a pair of fire source detection devices 3 are arranged on a pedestal 2 at a predetermined interval. It is equipped with a device 3a and a driving means 3b, and detects the position of the fire source by scanning in the horizontal and vertical directions. Reference numeral 4 denotes a nozzle device, which includes a radial direction control means 4b that directs the nozzle 4a to the fire source position detected by the fire source detection device 3, and a radial direction control means 4b that adjusts the opening degree of the injection port of the nozzle 4a according to the distance to the fire source. A radiation state control means 4c is provided to control the radiation state. That is, as shown in FIG. 2, a gear 7 that meshes with a gear 6 fixed to the outer periphery of a cylindrical body 5 is disposed at the lower part of the nozzle device 4, and by driving the gear 7 with a motor 8, the nozzle 4a is leveled. Performs direction control.

9 is a flexible tube, 10 is a pedestal, and pedestal 1
The rotational force of the motor 11 fixed at zero is transferred to the belt 12.
is transmitted to the pulley 13 via. The pulley 13 and the nozzle body 14 are connected by a rotating shaft, and the rotation of the pulley 13 controls the nozzle 4a in the vertical direction via the rotating shaft. Therefore, by applying control signals to the motors 8 and 11 to control the nozzle 4a in the horizontal and vertical directions, it is possible to direct the nozzle 4a toward the fire source and control the radial direction.

A cone body 15 is disposed at the tip of the nozzle body 14 at intervals of 16.
A slidable guide 17 is attached to the outer periphery of the nozzle body 14. A gear 19 that screws into a gear 18 provided on the outer periphery of the guide 17
is fixed to a motor 21 via a connecting rod 20, and the rotation of the motor 21 moves the guide 17 in the axial direction to adjust the opening degree of the injection port 22 and change the nozzle jet angle of the extinguishing agent.

Referring again to FIG. 1, 24 is a door that is closed during normal times to prevent the fire source detection device 3 and the nozzle device 4 from being closed.
protect 25 is a buzzer, 26 is a lamp, 27
is a fire detector for overall monitoring, and when a fire is detected, it sends detection information to the circuit section 28, and the circuit section 2
8, the buzzer 25 and lamp 26 are driven to display an alarm, and the detector 3a and nozzle 4a are directed to the approximate position of the fire source, and the door 24 is opened to activate the fire source detection device 3. to start detecting the accurate fire source location. In addition, the circuit section 2
8 has a built-in control section in which programs such as calculation programs and control programs are set using a microcopy computer, inputs the detection information from the detector 3a, calculates the position of the fire source, and uses the calculation results as input. Based on this, a control signal is sent to the control means 4b and the radiation state control means 4c, which determine the direction of the nozzle device 4. 2
9 is a tank for storing extinguishing agent, 30 is piping, 31
is a fire pump, 32 is a motor;
is activated by a command from the control unit, and the extinguishing agent is delivered to the pipe 30.
The liquid is sent to the nozzle 4a via.

FIG. 3 is a block diagram showing the circuit configuration in FIG. 1. Fire detector 27 and fire source detector 3
The detection information from a is input to the control unit 36 via the input interface 34. The control unit 36 incorporates a microcopy computer, and programs such as an arithmetic program and a control program are set therein, and the interface calculates the position of the fire source based on the input detection information and outputs a control signal according to the calculation result. 35 to the drive means 3b, radial direction control means 4b, radial state control means 4c, and motor 32 to command control operations. The driving means 3b controls the fire source detector 3a in the horizontal and vertical directions. The radial direction control means 4b controls the injection port of the nozzle 4a horizontally and vertically to direct it toward the fire source. The radiation state control means 4c controls the radiation state by adjusting the opening degree of the injection port of the nozzle 4a. The motor 32 drives the fire extinguishing pump 31 to deliver extinguishing agent to the nozzle 4a. The alarm unit 37 sounds the buzzer 25 and lights the lamp 26 based on the command from the control unit 36 to warn of the occurrence of a fire.

FIG. 4 is a flowchart of the control unit 36,
Hereinafter, the operation of the present invention will be explained with reference to the flowchart of FIG.

In block a, the initial state in normal times is set. For example, the door 24 is set to the closed position, the detector 3a and the nozzle 4a are positioned in the front direction, and the fire detector 27 is made to monitor the occurrence of a fire. When the fire detector 27 detects a fire, the process proceeds from block b to block c, where the door 24 is opened and the general direction of the fire source is calculated based on the detected information. In block d, the driving means 3b is operated based on the calculation result to direct the pair of detectors 3a in the direction of the fire source, thereby detecting the exact position of the fire source. In block e, the position of the fire source and the effective distance to the fire source are calculated based on the detection states from the pair of detectors 3a. Block f judges whether the detection information from the detector 3a continues for a predetermined period of time, and if the detection information continues for a predetermined period or more, block g
, and sound the buzzer 25 and turn on the lamp 2.
6 is lit to display an alarm. Further, the process advances to block h, and the radial direction control means 4b is operated to control the nozzle 4.
A is controlled in the horizontal and vertical directions to direct the injection port 22 toward the fire source. In block i, the radiation state control means 4c is operated to control the nozzle 4.
The opening degree of the injection port 22 of a is adjusted depending on the distance to the fire source (for example, if it is close, the opening degree is large, and if it is far away, the opening degree is small) to control the radiation state (the nozzle jetting angle of the fire extinguishing agent). In block j, the fire pump 31 is operated by starting the motor 32, and the fire extinguishing agent is delivered to the nozzle 4.
Start fire extinguishing activities by emitting light from a. The fire source detector 3a monitors the state of extinguishing the fire, and if the fire is not completely extinguished, the process proceeds from block k to block e and readjusts the radiation direction and radiation state of the nozzle 4a based on the detected information. Continue firefighting efforts. When it is confirmed in block k that the fire has been extinguished, the process proceeds to block k, where the motor 32 and fire pump 31 are turned off to stop fire extinguishing activities, and in block m, the buzzer 25 and lamp 26 are turned off to stop the alarm.

FIG. 5 is a partial sectional view showing a second embodiment of the present invention, in which a gear 18 provided on the outer periphery of the guide 17 is shown.
The motor 21 is characterized in that a screw thread 40 is provided on the outer periphery of the nozzle body 14, and a screw thread 41 that is threadedly engaged with the thread thread 40 is provided inside the guide 17.
The rotation is transmitted to the guide 17 via the gear 19, and the guide 17 is rotated around the outer periphery of the nozzle body 14 and moved in the axial direction to adjust the opening degree of the injection port 22. Nozzle body 14 and guide 17
By screwing them together, the injection port 22 can be accurately controlled.

FIG. 6 is a partial sectional view showing a third embodiment of the present invention, in which a worm gear 42 is used as a gear for rotating the guide 17, and the rotation axis of the guide 17 is orthogonal to a motor (not shown). The guide 17 is provided with a thread 44 on the outer periphery of the guide 17 to be threaded with the thread 43 of the worm gear 42.
The guide 17 is rotated by rotation of the worm gear to adjust the opening degree of the injection port 22.

FIG. 7 is a partial sectional view showing a fourth embodiment of the present invention, which is characterized in that the guide 17 is fixed and the conical plate 15 provided inside the guide 17 is movable. is fixed to a shaft 46 via a convergence plate 45, and the other end of the shaft 46 is fixed to a gear 47. The shaft 46 has a thread provided on its outer periphery that is screwed into a thread on the inside of the nozzle body 14, and rotates the shaft 46 by transmitting the rotation of the motor 21 to the gear 47 via the gear 19.
A protrusion 48 is provided at a position corresponding to the conical plate 15, and a gap 49 between the protrusion 48 and the conical plate 15 is adjusted by rotating the shaft 46. Also, convergence plate 4
5 has a groove in the center direction to converge the extinguishing agent.
By the action of this convergence plate 45 and the gap 49 that is adjusted appropriately, the extinguishing agent is spread at a predetermined angle at the injection port 2.
It can be injected from 2.

Next, the effects of the present invention will be explained. An automatic fire extinguishing system that calculates the location of a fire source in a control unit based on detection information from a detector that detects the fire source, and sprays extinguishing agent toward the location of the fire source in accordance with a control signal from the control unit. In the nozzle device, the opening of the nozzle that emits fire extinguishing agent is automatically adjusted based on the control signal from the control unit depending on the distance to the fire source, which extinguishes the fire according to the distance to the fire source. By changing the nozzle jet angle of the agent, it is possible to adjust the radiation state accurately, making it possible to extinguish fires efficiently.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a partial sectional view showing the main parts of the present invention in FIG. 1 in an enlarged manner, FIG. 3 is a block diagram showing the circuit configuration in FIG. 1, and FIG. Flowchart showing the operation, FIG. 5 is a partial sectional view showing the second embodiment of the invention, FIG. 6 is a partial sectional view showing the third embodiment of the invention, and FIG. 7 is a partial sectional view showing the third embodiment of the invention. FIG. 4 is a partial cross-sectional view showing a fourth embodiment. 1... Automatic fire extinguishing system, 2... Frame, 3... Fire source detection device, 3a... Detector, 3b... Drive means,
4... Nozzle device, 4a... Nozzle, 4b... Radiation direction control means, 4c... Radiation state control means, 5
... Cylindrical body, 40, 41, 43, 44 ... Screw thread, 6, 7, 18, 19, 47 ... Gear, 8, 1
1, 21, 32... Motor, 9... Flexible pipe, 10... Pedestal, 12... Belt, 13... Pulley, 14... Nozzle body, 15... Cone, 1
6, 49... Interval, 17... Guide, 20... Connecting rod, 22... Jet nozzle, 24... Door, 25... Buzzer, 26... Lamp, 27... Fire detector, 3
0... Piping, 31... Fire pump, 34... Input interface, 35... Output interface,
36... Control unit, 37... Alarm unit, 42... Worm gear, 45... Convergence plate, 46... Shaft,
48...Protrusion.

Claims (1)

[Claims for Utility Model Registration] The position of the fire source is calculated by the control unit based on information from the detector that detects the fire source, and the position of the fire source is calculated in the horizontal direction and based on the control signal from the control unit according to the calculation result. In a nozzle device of an automatic fire extinguishing system that changes the radiation angle in the vertical direction and emits extinguishing agent from the nozzle while directing it toward the fire source position, the opening degree of the nozzle nozzle is controlled based on a control signal from the control unit. A nozzle device for an automatic fire extinguishing system, characterized in that it is equipped with a radiation state control means for changing and controlling the.