JPH1085356A - Fire detection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to perform sure and highly reliable fire extinguishing activities without causing the fire extinguishing activities due to a malfunction of the sensor, by generating an alarm upon continuing an output from a fire detection sensor arranged on the top of a room for a specified period, and by generating a fire extinguishing start signal upon repeatition of this alarm specified times. SOLUTION: An output from a fire detection sensor, for instance, a flame detection sensor 2 to sense an infrared ray, arranged on the top in a room 1, controls the control panel 3 to explode the cock 5 of the fire extinguishing agent cylinder 4 to spray the fire extinguishing agent around in the room 1. In this case, if the flame detection sensor 2, for instance, detects a flame to generate an output, this output generates an alarm per continuation for 10sec., for instance. If this alarm were generated 3-time, for instance, the fire extinguishing activity starts. Further, the flame detection sensor 2 consists of a plrural number of flame detection sensor elements in proximity with with each other arranged so that each detection range is different, for instance. The fire extinguishing activity starts only when these flame detection sensor elements generate an output altogether.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire detection device, and more particularly to a fire detection device that operates reliably and reliably.

[0002]

2. Description of the Related Art As a conventional fire detecting device, there is known a fire detecting device provided with a smoke sensor and a temperature sensor in an upper part of a room.

[0003]

However, these sensors are liable to malfunction and have low reliability.

The present invention has been made to eliminate the above problems and disadvantages.

[0005]

According to the present invention, there is provided a fire detecting apparatus comprising: a fire detecting sensor disposed in an upper part of a room; a means for generating an alarm when an output of the fire detecting sensor continues for a predetermined period; Means for generating a fire extinguishing start signal when the alarm is repeated a predetermined number of times.

[0006] The fire detecting device of the present invention comprises a fire detecting sensor and a fire extinguishing agent spraying means disposed at an upper part of the room.
It comprises means for generating an alarm when the output of the fire detection sensor continues for a predetermined period, and control means for energizing the fire extinguishing agent spraying means when the alarm is repeated a predetermined number of times.

[0007] The fire detection sensor comprises a plurality of sensor elements having different detection ranges.

Further, the fire detecting device of the present invention recognizes a fire when all of the above sensor elements generate an output.

Further, the fire detection device of the present invention issues an alarm when any one of the sensor elements generates an output.

[0010] The fire detecting sensor or the sensor element may be a flame detecting sensor.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIG. 1, a fire sensor, for example, a flame detecting sensor 2 for detecting infrared rays is disposed above the room 1, and a control panel 3 is controlled by an output of the flame detecting sensor 2. The plug 5 of the fire extinguishing agent cylinder 4 is blown up, and the extinguishing agent is
To be sprayed.

Further, in the present invention, when the flame detecting sensor 2 detects, for example, a flame and generates an output, an alarm is issued every time the output continues for, for example, 10 seconds, and the alarm is issued a plurality of times, for example, three times. When fired, ensure that the firefighting activities are started.

Further, in the present invention, as shown in FIG.
a and 8b are constituted by a plurality of, for example, two adjacent flame sensing sensor elements 2a and 2b arranged differently, and only when the two flame sensing sensor elements 2a and 2b both generate an output. , So that fire fighting can be started.

Since the fire detecting device of the present invention has the above-described configuration, if the room 1 becomes a fire, the sensor 2 detects the fire and immediately extinguishes the fire. Since the fire extinguishing activity is started from the start, the fire extinguishing activity is started by the malfunction of the sensor 2 and the room 1 is not unduly contaminated.

[0016]

As described above, according to the fire detecting device of the present invention, there is a great advantage that the fire extinguishing can be performed more reliably and more reliably than the conventional one.

[Brief description of the drawings]

FIG. 1 is a front view of a fire detection device according to the present invention.

FIG. 2 is a front view of a flame detection sensor part in the fire detection device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Room 2 Flame detection sensor 2a Flame detection sensor element 2b Flame detection sensor element 3 Control panel 4 Fire extinguishing agent cylinder 5 Plug 6 Pipe 7 Nozzle 8a Sensing range 8b Sensing range

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Futa Hanyu 8-7 Sanbancho, Chiyoda-ku, Tokyo Inside Toyoko Riken Co., Ltd.

Claims (7)

[Claims] 1. A fire detection sensor arranged in an upper part of a room, means for generating an alarm when the output of the fire detection sensor continues for a predetermined period, and a fire extinguishing start signal when the alarm is repeated a predetermined number of times. And a means for generating the fire. 2. A fire detecting sensor and a fire extinguishing agent spraying means disposed in an upper part of a room, a means for generating an alarm when an output of the fire detecting sensor continues for a predetermined period, and the alarm is repeated a predetermined number of times. And a control means for energizing the fire extinguishing agent spraying means. 3. The fire detecting device according to claim 1, wherein said fire detecting sensor comprises a plurality of sensor elements each having a different sensing range. 4. The fire detecting apparatus according to claim 3, wherein a fire is recognized when an output is generated in all of the sensor elements. 5. The fire detection device according to claim 3, wherein an alarm is issued when an output is generated at any one of the sensor elements. 6. The fire detecting device according to claim 1, wherein the fire detecting sensor is a flame detecting sensor. 7. The fire detection device according to claim 3, wherein the sensor element is a flame detection sensor.