JP2012218849A - Elevator landing hall fire protection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator landing hall fire protection device capable of continuously extinguishing fire near a landing hall and being introduced at low cost.SOLUTION: The elevator landing hall fire protection device includes a landing hall jamb provided for each landing hall of an elevator, a landing hall door, a tank, a fire extinguishing device, an absorption and reuse device, a fire detection sensor and a controller. The landing hall door is surrounded by the landing hall jamb and freely openably and closably covers a landing hall doorway. The tank is provided on the right and left respectively on the back side of the landing hall jamb, and stores fire extinguishing liquid. The fire extinguishing device is connected to the tank and jets the liquid inside the tank onto a landing hall floor in front of the landing hall door to extinguish fire. The absorption and reuse device sucks up the liquid jetted onto the landing hall floor and supplies it to the tank. The controller is connected to the fire extinguishing device and the absorption and reuse device, and performs control of making the fire extinguishing device jet the liquid inside the tank upon fire and making the absorption and reuse device re-supply the liquid to the tank.

Description

  Embodiments described herein relate generally to an elevator hall fire prevention device.

  In the past, when a fire broke out in a building, call registration was prohibited after the elevator was run to the evacuation floor, and residents were evacuated by other methods such as stairs. In recent years, however, the number of buildings has risen, and in the case of residents who are difficult to evacuate using the stairs, such as elderly people, families with children, and disabled people, it takes time to complete the evacuation of the entire building. There was a problem that. In order to cope with such a problem, it is considered that residents are evacuated quickly to an evacuation floor by actively using an elevator when a disaster such as a fire occurs.

  However, if the fire spreads to the vicinity of the landing, it is difficult to evacuate from the landing using an elevator. Also, if a fire reaches the hoistway from near the landing, the safety of people in the car is also threatened. For this reason, it is required to extinguish the fire near the landing. In order to cope with such a problem, a technique is known in which a tank for storing a fire-extinguishing liquid is provided in a landing, and a fire extinguisher connected to the tank injects liquid to perform initial fire extinguishing. .

JP 2003-318225 A

  However, in the above prior art, the amount of liquid in the tank is limited, and if the liquid in the tank is exhausted, it is impossible to continue the fire fighting operation. On the other hand, methods for connecting a fire extinguishing device to a water pipe in order to continue fire extinguishing work are also conceivable. However, these methods have a problem that a great deal of cost is required to introduce them into each landing.

  In view of the above-described problems of the prior art, an object of the present invention is to provide an elevator hall fire prevention device that can continuously perform fire extinguishing work in the vicinity of the hall and can be introduced at low cost.

  An elevator hall fire prevention device according to an embodiment of the present invention includes a landing three-way frame, a landing door, a tank, a fire extinguishing device, an absorption reuse device, a fire detection sensor, and a control device provided for each elevator hall.

  The landing door is surrounded by a three-way frame for the landing and covers the landing doorway so as to be freely opened and closed. Tanks are provided on the left and right sides of the three-sided frame of the hall, respectively, and store fire-fighting liquid. The fire extinguisher is connected to the tank and extinguishes fire by injecting the liquid in the tank onto the landing floor in front of the landing door.

  The absorption reuse device sucks up the liquid sprayed on the landing floor and supplies it to the tank. The control device is connected to the fire extinguishing device and the absorption reuse device, and controls the fire extinguishing device to inject the liquid in the tank and to cause the absorption reuse device to resupply the liquid in the event of a fire.

1 is a front perspective view showing a schematic configuration of an elevator hall fire prevention apparatus according to Embodiment 1 of the present invention. FIG. Side surface perspective drawing of the elevator hall fire prevention apparatus shown in FIG. The flowchart which shows the specific example of the fire extinguishing process of the elevator hall fire prevention apparatus shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<Embodiment 1>
FIG. 1 is a front perspective view showing a schematic configuration of an elevator hall fire prevention apparatus 1 according to Embodiment 1 of the present invention, and FIG. 2 is a side perspective view of the elevator hall fire prevention apparatus shown in FIG.

  As shown in FIG. 1, the elevator hall fire prevention device 1 includes a landing three-way frame 11, a landing door 12, a tank 13, a fire extinguishing device 14, a storage device 15, an absorption reuse device 16, a fire provided for each elevator landing. It comprises a detection sensor 17 and a control device 18.

  The landing door 12 is a door that is surrounded by the landing three-way frame 11 and covers the landing doorway in an openable and closable manner. The tanks 13 are respectively provided on the left and right sides of the landing three-way frame 11 and store fire-fighting liquid. Specific examples of the liquid to be stored include various liquid fire extinguishing agents (aqueous solutions of alkali metal salts, hydrocarbon surfactants, etc.) in addition to water.

  The fire extinguishing device 14 is connected to the tank 13 through a pipe 21 and extinguishes fire by injecting the liquid in the tank 13 onto the landing floor 19 in front of the landing door. The storage device 15 is a device that is provided at a lower portion of the landing floor 19 in front of the landing door 12, specifically, a lower portion of a carpet laid on the floor, and stores the liquid sprayed on the landing floor 19. The upper surface portion of the storage device 15 may be fitted so as not to be stepped from the landing floor 19. Moreover, in order to prevent the fire extinguishing apparatus 14 from being clogged with the foreign material, the storage device 15 preferably has a function of filtering the liquid sprayed on the landing floor 19 to remove the foreign material and storing it.

  The absorption reuse device 16 is connected to the storage device 15 via a pipe 23, sucks up the liquid stored in the storage device 15, supplies it to the tank 13, and circulates the liquid. The fire detection sensor 17 is connected to the control device 18, detects the occurrence of a fire in the building, and outputs a fire detection signal to the control device 18. Here, the fire detection sensor 17 is provided for each landing, but if it is configured to be linked to the fire detection sensors on other floors via a network, it is effective in preventing the spread of fire on the installation floor.

  The control device 18 is connected to the fire extinguishing device 14 and the absorption reuse device 16 in addition to the fire detection sensor 17, and causes the fire extinguishing device 14 to inject the liquid in the tank 13 based on the fire detection signal, and the absorption reuse device 16. The liquid is resupplied to the tank 13.

  Hereinafter, the operation of the elevator hall fire prevention apparatus 1 configured as described above in the event of a fire will be described with reference to FIG. FIG. 3 is a flowchart showing a specific example of the fire extinguishing process of the elevator hall fire prevention apparatus 1 shown in FIG.

First, the fire detection sensor 17 determines whether or not a fire has occurred near the landing or in the building (S301). If it is determined that a fire has occurred, a fire detection signal is output to the control device 18 via the signal path 31 (S302). On the other hand, when it is determined that no fire has occurred, the standby state is maintained.
Next, the control device 18 controls the fire extinguishing device 14 via the signal path 32, and causes the fire extinguishing device 14 to inject the fire extinguishing liquid stored in the tank 13 toward the landing floor 19 (S303).

Next, the storage device 15 collects the liquid sprayed on the landing floor 19 and stores it in the internal water storage area (S304). At this time, the jetted liquid is collected while being filtered, and foreign matters such as dust are removed to some extent, which is suitable as a circulation system for the digestive liquid.
Next, the control device 18 controls the absorption reuse device 16 via the signal path 33 and sucks up the liquid stored in the storage device 15 by driving a suction pump (not shown) of the absorption reuse device 16. Then, it is supplied to the tank 13 (S305).

Next, the fire detection sensor 17 determines whether or not the fire extinguishing is completed (S306). Here, when it is determined that fire extinguishing has been completed, the fire detection sensor 17 stops outputting the fire detection signal to the control device 18 (S307). On the other hand, when it is determined that the fire extinguishing is not completed, the process returns to S303 and the same process is repeated until the fire extinguishing is completed.
And the control apparatus 18 stops the drive of the fire extinguishing apparatus 14 and an absorption reuse apparatus based on the stop of the input of the fire detection signal from the fire detection sensor 17 (S308), and complete | finishes a process.

  Thus, according to the elevator hall fire prevention apparatus 1 according to the present embodiment, liquid such as water sprayed for fire extinguishing on the landing floor 19 is circulated and re-supplied into the tank 13, so that it is near the landing area. Fire extinguishing work can be continued for a long time. Moreover, since the construction which connects the fire extinguishing apparatus 14 to a water pipe etc. is not required, there exists an advantage which can be introduce | transduced arbitrarily with respect to many halls at comparatively low cost. Further, since the liquid can be circulated and used, the size of the tank 13 can be reduced. Further, because the liquid used for fire extinguishing is temporarily stored in a storage device 15 provided at the lower part of the landing floor 19 in front of the landing door 12, the absorption reuse device 16 is jetted onto the landing floor 19. The liquid can be stably sucked into the tank 13.

<Application example>
In the above-described embodiment, two sets of the tank 13, the fire extinguishing device 14, and the water absorption reuse device 16 are provided. However, it is possible to change to one set. Moreover, although the water absorption reuse apparatus 16 shall suck up the liquid stored in the storage apparatus 15, it can also be changed into the structure which sucks directly, without storing. Further, the storage device 15 may not be provided with a filtration function, but may be provided with a filtration function on the absorption reuse device 16 side.

  As mentioned above, although several embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Elevator hall fire prevention device 11 ... Three-way frame 12 ... Landing door 13 ... Tank 14 ... Fire extinguishing device 15 ... Storage device 16 ... Absorption reuse device 17 ... Fire detection sensor 18 ... Control device 19 ... Landing floor

Claims (6)

A three-way frame for each elevator platform,
A landing door that is surrounded by the three-way frame of the landing and covers the landing doorway in an openable and closable manner,
A tank for storing fire extinguishing liquid provided on the left and right sides on the back side of the landing three-way frame;
A fire extinguisher that is connected to the tank and that extinguishes fire by injecting the liquid in the tank onto the floor in front of the landing door;
An absorption recycling apparatus that sucks up the liquid sprayed onto the floor and supplies the liquid to the tank;
Control that is connected to the fire extinguishing device and the absorption reuse device and controls the fire extinguishing device to inject the liquid in the tank and to cause the absorption reuse device to resupply the liquid to the tank when a fire occurs Equipment,
An elevator hall fire prevention device characterized by comprising: A fire detection sensor connected to the control device for detecting the occurrence of a fire in the building and outputting a fire detection signal;
The elevator control fire prevention device according to claim 1, wherein the control device performs the control based on the fire detection signal. A storage device that is provided in a lower part of the floor in front of the landing door and stores the liquid sprayed on the floor;
The elevator landing fire prevention device according to claim 2, wherein the absorption reuse device sucks up the liquid from the storage device and supplies the liquid to the tank.   The elevator storage fire prevention device according to claim 3, wherein the storage device has a function of filtering and storing the liquid sprayed on the floor.   5. The elevator hall fire prevention apparatus according to claim 1, wherein the tank uses water as the fire-extinguishing liquid. 6.   5. The elevator hall fire prevention apparatus according to claim 1, wherein a liquid fire extinguishing agent is used as the fire extinguishing liquid in the tank.

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