JPH11236174A - Fire extinguishing appliance for pit of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set the direction of the exhaust nozzle for fire extinguisher in the direction suitable for extinguishment by fitting a fire extiguishing appliance having an exhaust nozzle jetting the fire extinguisher to the lower part of an elevator car. SOLUTION: A pit 3 is positioned below a fire extinguishing appliance main body 4. The fire extiguishing appliance main body 4 is fitted beneath an elevator car 2. The cinder 5 of tobacco falls down through a gap between the elevator car 2 and a landing 6. Mainly cotton dust, wastepaper, and the like 7 are accumulated on the floor of the pit 3. Smoke 8 rises from the cinder of tobacco. When the heat sensing part 9 of the fire extinguishing appliance 4 senses heat by fire of the pit 3, melting solder is melted by heating, and simultaneously with being melted, fire extinguisher 11 is jetted from the holes of an exhaust nozzle 10 at the angle of 170 degrees. Hereby, pit fire can be automatically prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fire extinguishing system for an elevator pit.

[0002]

2. Description of the Related Art Conventionally, this type of device has been disclosed in
As described in Japanese Patent Publication No. -31783, there has been proposed an apparatus in which a smoke detector and an injection port of a fire extinguisher are provided in the vicinity of an elevator pit, and the fire extinguisher is operated when the smoke detector operates. I have.

[0003]

However, since the elevator pit has a waterproof structure, it is actually difficult to open the injection port of the fire extinguisher on the inner wall surface of the pit, and the car and the counterweight are not provided in the middle of the pit. The injection port must be provided at a position avoiding these, and it has been difficult to provide the injection port at a position suitable for fire extinguishing.

It is an object of the present invention to provide a fire extinguisher for a pit of an elevator in which the direction of a fire extinguishing agent jet can be set to a direction suitable for fire extinguishing.

Another object of the present invention is to provide a fire extinguishing system for an elevator pit, which can be easily mounted.

[0006]

An object of the present invention is to provide a container containing a fire extinguishing agent, a fire detector attached to the container and operated by temperature, and an interlocking operation with the fire detector attached to the container. A fire extinguisher equipped with a jet nozzle for jetting the fire extinguishing agent is mounted on a lower part of an elevator car.

As described above, since the fire extinguisher is mounted at the lower part of the car, the fire extinguisher can be mounted on the elevator without any processing on the pit.

Further, since the fire extinguisher is all integrated, it can be easily mounted on the lower part of the car and the mounting position can be arbitrarily selected.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a pit side sectional view showing an embodiment of the present invention, and FIG. 2 is an enlarged view of a fire extinguisher.

In FIG. 1, 1 is a hoistway, 2 is a car,
3 is a pit located at the lower part of the hoistway 1, 4 is a fire extinguisher installed under the car, 5 is a cigarette of cigarettes dropped from the gap between the car 2 and the landing 6, and accumulated on the floor of the 7 pit 3. Numeral 8 is smoke rising from the tobacco burner 5, mainly cotton litter, paper waste, and the like. In FIG. 2, 9 is a heat sensing unit of the fire extinguisher main body, and 10 is an injection nozzle and a nozzle cap.

Next, the operation will be described. The fire in the pit 3 causes the heat sensing unit 9 of the fire extinguisher 4 to detect heat, and the molten solder is melted by heating. Fire extinguisher 11 is ejected at an angle of 170 degrees.

[0013]

According to the present invention, a fire extinguisher is attached to the lower part of a car of an elevator, and when a heat sensing unit of the fire extinguisher detects heat, an extinguishing agent is injected from an injection nozzle to prevent pit fire. Can be done automatically.

[Brief description of the drawings]

FIG. 1 is a pit side sectional view showing an embodiment of an elevator pit fire extinguishing apparatus of the present invention.

FIG. 2 is an enlarged view of the fire extinguisher main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Riding car 3 Pit 4 Fire extinguisher main body 9 Heat sensing unit 10 Injection port 11 Fire extinguisher

Claims (2)

[Claims] 1. A container containing a fire extinguishing agent, a fire detector attached to the container and operating according to temperature, and a jet nozzle attached to the container and ejecting the fire extinguishing agent that operates in conjunction with the fire detector. A fire extinguisher for a pit of an elevator, characterized in that a fire extinguisher equipped with the following is attached to a lower part of an elevator car. 2. The container according to claim 1, wherein said container is attached to a lower part of a removable car and is located closer to a car door than a center of the car.
The fire extinguishing device for an elevator pit according to the above.