JPH11276610A - Fire-fighting alarm device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire-fighting alarm device with which a fire-fighting agent can be manually or automatically sprinkled as well. SOLUTION: This device is provided with a temperature sensor 5 provided near a heat generation source 1, fire-fighting means 9 for sprinkling the fire- fighting agent toward the heat generation source, fire-fighting switch 3 for manually operating the fire-fighting means 9 and alarm means 12 for informing of the danger of a fire when the temperature sensor 5 detects a prescribed dangerous temperature just before an outbreak of fire. When the temperature sensor 5 detects the outbreak of fire, a fire-fighting control means 6 operates the fire-fighting means 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing alarm system, and more particularly to a fire extinguishing alarm system for preventing a fire from a stove in a home kitchen and effectively extinguishing the fire when a fire starts. About.

[0002]

2. Description of the Related Art In recent years, even in general households, a fire extinguisher filled with a fire extinguishing agent has been provided in a kitchen for handling fire.

[0003] In high-rise apartment buildings such as condominiums, sprinklers associated with fire detectors have been installed.

[0004]

However, in the case of the above-mentioned conventional fire extinguisher, the fire extinguisher is not used unless the family member notices the fire, and the fire extinguisher is upset even if he notices the fire. Could not be used normally, and firefighting often failed.

[0005] In the case of a sprinkler linked with a fire detector, even if a fire is extinguished, the room will be flooded and the damage will be enormous, and the downstairs room will be flooded.
The disadvantage was that the damage was further increased.

Accordingly, the present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to be able to notify when a fire is about to occur, and to provide a notification when a fire has started. An object of the present invention is to provide a fire extinguishing alarm device that can automatically and reliably spray a fire extinguishing agent.

[0007]

In order to achieve the above object, a fire extinguishing alarm device according to the present invention includes a temperature sensor provided near a heat generating source, and a fire extinguishing agent sprayed toward the heat generating source. Fire extinguishing means, a fire extinguisher switch for manually activating the fire extinguishing means, a notifying means for notifying a fire danger when the temperature sensor detects a predetermined dangerous temperature just before the fire is fired, and the temperature sensor being fired. And a fire extinguishing control means for activating the fire extinguishing means when detecting is detected.

Further, a reset switch for stopping the notification when the notification means starts the notification is provided. A fire protection cover release mechanism is provided for releasing the fire protection cover surrounding the heat generation source when the fire extinguishing means is operated. Furthermore, the present invention is characterized in that a cutoff control means for cutting off the heat source of the heat generation source when the fire extinguishing means is operated is provided. Further, a stop means is provided for stopping driving of a ventilation fan provided near the heat generating source when the fire extinguishing means is operated.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a general household kitchen to which a fire extinguishing alarm device according to an embodiment is applied.

The stove 1 corresponds to the heat source of the present invention,
It is configured such that a gas such as propane gas or city gas is supplied from a gas supply source (not shown). Although not shown, the gas supply source is provided with a valve capable of shutting off gas supply when a gas supply shutoff signal is output from a controller described later.

Above the cooking stove 1, a range hood 2 is provided, in which a ventilation fan 3 is provided, and a nozzle 4 for spraying a fire extinguisher toward the cooking stove 1 is provided.
Is provided.

At the four corners of the lower end opening of the range hood 2, temperature sensors 5, 5,...
It is configured so that the temperature in the vicinity can be detected and input to the controller 6.

In FIG. 1, reference numeral 7 denotes a fire protection cover which is normally housed in the lower end opening 2 'of the range hood 2 (in a state where no fire occurs) as shown in FIG. That is, the fire protection cover 7 is made of non-combustible cloth,
It is folded in a bellows shape and is held by an L-shaped stopper 8. The stopper 8 is configured to rotate when a solenoid (not shown) driven and controlled by the controller 6 is actuated, to release the holding of the fire prevention cover 7 and to cover the periphery of the stove 1. (See FIG. 1).

The fire prevention cover 7 is not provided on the range hood 2 and, as shown in FIG.
The fire prevention cover 7 folded in a bellows may be discharged above the stove 1 when the stopper 8 is opened.

In FIG. 1, reference numeral 9 denotes a fire extinguisher filled with a known extinguishing agent, which is housed in a cabinet 10 above the kitchen. The fire extinguisher 9 is opened when a valve 11 operated by a driving signal from the controller 6 or a driving signal from a manual fire extinguishing switch 13 described later is opened.
The fire extinguishing agent that has been charged is configured to be supplied to the nozzle 4.

In FIG. 1, reference numeral 12 denotes a buzzer serving as a notification means of the present invention for notifying the dwelling person of the danger of the stove 1, and reference numeral 13 denotes a fire extinguishing switch for manually operating the valve 11. A reset switch 14 stops the buzzer 12 from sounding.

FIG. 4 is a block diagram showing a schematic configuration of the controller 6. The controller 6 is mainly composed of a microcomputer (CPU).

The controller 6 receives a detection signal detected by the temperature sensor 5 and inputs a reset signal to the reset switch 1.
4 switch signals are input. The controller 6 outputs a drive signal for opening the valve 11 of the fire extinguisher 9, a switch signal for turning off the ventilation fan 3, a drive signal for the buzzer 12, a solenoid drive signal for the stopper 8, and a control signal. The filter 1 is configured to output a cutoff signal for cutting off the gas supply to the filter 1.
In addition, the fire extinguishing switch 13 is provided with a drive signal for opening the valve 11 and the ventilation fan 3 being turned off without the intervention of the controller 6.
A switch signal for setting the FF, a solenoid drive signal for the stopper 8, and a shutoff signal for shutting off the gas supply to the stove 1 can be output.

In FIG. 4, reference numeral 17 denotes a setting machine for inputting a set temperature at which the buzzer 12 starts sounding and a set temperature at which the valve 11 of the fire extinguisher 9 is operated independently of the fire switch 13.

The set temperature (dangerous temperature) at which the buzzer 12 starts sounding is a temperature at which a fire may occur if the stove 1 is used as it is, for example, 200 ° C. at the installation position of the temperature sensor 5. The set temperature (fire temperature) for operating the valve 11 of the fire extinguisher 9 is, for example, 250 ° C. at the position where the temperature sensor 5 is installed.

Next, the control operation will be described with reference to the flowchart of FIG. Now, it is assumed that the above-mentioned two set temperatures are input and set via the setter 17, and the controller 6 is operating (Step 100; hereinafter, the steps are referred to as "S").

The operation of the controller 6 causes the temperature sensors 5 and 5 to operate.
Are input to the controller 6 (S10).
4). When at least one of the plurality of temperature sensors 5 reaches a dangerous temperature (200 ° C.), the controller 6
Is started (Yes at S104).

The buzzer 12 sounds so that the household can detect the danger of the stove 1, so that the gas in the stove 1 can be stopped. In this case, the reset switch 14 is pressed to stop the buzzer 12 from sounding. (Yes at S108, S
110).

When the buzzer 12 sounds or when the family member determines that the stove 1 has reached a dangerous state,
Although not shown in the flowchart of FIG. 5, the fire extinguishing switch 13 is pressed, and a fire extinguishing process described later is performed (see S114 described later).

By the way, when the housekeeper is far from the stove 1 and cannot stop the gas in the stove 1 (S
108, the detection temperatures of the temperature sensors 5, 5,... Gradually increase to reach the fire temperature (250 ° C.) (Yes at S112). In response to the detection signal, the controller 6 opens the stopper 8 and covers the stove 1 with the fire protection cover 7, and operates the valve 11 of the fire extinguisher 9 to cause the fire extinguishing agent from the nozzle 4 toward the stove 1. Is sprayed. Further, the switch of the ventilation fan 3 is turned off, and the gas in the stove 1 is shut off, so that the fire extinguishing process is automatically performed (S114). Therefore, the fire extinguisher is sprayed on the stove 1 in the fire protection cover 7 so that the fire can be effectively extinguished. Further, since the ventilation fan 3 is also stopped, the fire extinguishing agent can be prevented from scattering and the fire extinguishing effect can be enhanced. . Further, since the fire state is covered with the fire protection cover 7 and is not visible to the occupants, the occupants can calmly perform the fire extinguishing activities without fear of strong fear.

FIG. 6 shows another embodiment of the present invention, in which the contents of a controller are simplified.

That is, the controller 6 'makes the buzzer 12 sound by the temperature sensor 5a for detecting the dangerous temperature, and activates the valve 11 of the fire extinguisher 9 by the temperature sensor 5b for detecting the fire temperature and the fire extinguishing switch 13. Like that.

In the above-described example, the extinguishing agent is filled in the fire extinguisher 9; however, the extinguishing agent may be water. Therefore, in the present invention, the term "fire extinguisher" includes water.

In the above-described example, the kitchen stove 1 is shown as a heat generating source. However, it is needless to say that a work place using a fire may be used.

[0030]

The fire extinguishing alarm device according to the present invention comprises a temperature sensor provided near a heat generating source, a fire extinguishing means for spraying a fire extinguishing agent toward the heat generating source, and manually operating the fire extinguishing means. A fire extinguishing switch, a notifying unit for notifying a danger of fire when the temperature sensor detects a predetermined dangerous temperature just before the fire, and a fire extinguishing unit for activating the fire extinguishing means when the temperature sensor detects a fire. With the control means, it is possible to extinguish the fire by spraying the fire extinguishing agent to the heat generation source by the fire temperature or manually.

When a notification switch is provided and a reset switch for stopping the notification is provided, the notification state can be stopped. Furthermore, when the fire extinguishing means operates, a fire extinguishing agent can be effectively sprayed when a fire protection cover release mechanism for releasing the fire protection cover surrounding the heat generation source is provided. Then, when the fire extinguishing means is activated, when a cutoff control means for cutting off the heat source of the heat generation source is provided, the fire generation source can be cut off. In addition, when the fire extinguishing means is activated, when the stopping means for stopping the driving of the ventilation fan provided near the heat generating source is provided, the fire extinguishing agent can be prevented from scattering and the fire extinguishing effect can be enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view when a fire extinguisher alarm device according to one embodiment of the present invention is applied to a kitchen at home.

FIG. 2 is an explanatory diagram showing a stored state of a fire prevention cover.

FIG. 3 is an explanatory view showing another example of installation of a fire protection cover.

FIG. 4 is a block diagram illustrating a schematic configuration of a controller.

FIG. 5 is a flowchart showing a control operation.

FIG. 6 is a block diagram illustrating a schematic configuration of a controller according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stove (heat generation source) 2 Range hood 3 Ventilation fan 4 Nozzle 5, 5a, 5b Temperature sensor 6, 6 'Controller 7 Fire protection cover 8 Clasp 9 Fire extinguisher 10 Cabinet 11 Valve 12 Buzzer 13 Fire extinguishing switch 14 Reset switch

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masaaki Sakurai 3-3-1 Marunouchi, Chiyoda-ku, Tokyo Nippon Signal Co., Ltd. (72) Mitsuo Nishimura 3-3-1 Marunouchi, Chiyoda-ku, Tokyo Date Inside the Signal Company (72) Inventor Daisuke Otohata 3-3-1 Marunouchi, Chiyoda-ku, Tokyo Nihon Signal Co., Ltd. (72) Inventor Shin Shinba 3-3-1 Marunouchi, Chiyoda-ku, Tokyo Nihon Signal Inside the corporation

Claims (5)

[Claims] A temperature sensor provided in the vicinity of a heat generating source; a fire extinguishing means for spraying a fire extinguishing agent toward the heat generating source; a fire extinguishing switch for manually operating the fire extinguishing means; When detecting a predetermined dangerous temperature just before the fire, a notifying means for notifying of a fire danger, and when the temperature sensor detects a fire, fire extinguishing control means for activating the fire extinguishing means, Fire extinguishing alarm device. 2. When the notification means starts notification,
The fire extinguishing alarm device according to claim 1, further comprising a reset switch for stopping the notification. 3. The fire extinguishing alarm device according to claim 1, further comprising a fire protection cover releasing mechanism for releasing a fire protection cover surrounding the heat generation source when the fire extinguishing means operates. 4. The fire extinguishing alarm device according to claim 1, further comprising a shutoff control unit that shuts off a heat source of the heat generation source when the fire extinguishing unit operates. 5. A stopping means for stopping driving of a ventilation fan provided near said heat generating source when said fire extinguishing means is operated. A fire extinguishing alarm device according to item 1.