JP3990348B2 - Hoistway fire alarm - Google Patents

Description

  The present invention is a hoistway fire alarm device suitable for preventing smoke that has flowed into a car hoistway in a building fire from diffusing to upper floors.

The conventional hoistway fire alarm device is described as an elevator device that moves up and stops the top floor in the event of a fire. (For example, see Patent Document 1).
A hoistway fire alarm device is disclosed in which when a fire occurs, a water discharge control device operates to operate a solenoid valve and discharge water from a water discharge nozzle. (For example, see Patent Document 2).
The point that the water sprinkling lamp is turned on and off as appropriate is described. (For example, see Patent Document 3).
(In particular, the eighth paragraph and FIG. 2).
It is conventionally known to provide a device for notifying a fire. (If necessary, see the microfilm of Japanese Utility Model No. 63-144381 (Japanese Utility Model Application No. 2-67494) and the microfilm of Japanese Patent Application No. 50-81059 (Japanese Patent Application No. 51-160350)).
In the event of a fire, the point that the control device operates, drives the electromagnet, and overturns the device that closes the hoistway is listed. (For example, see Patent Document 4).
The point that the water discharge control device is stopped by the fire extinguishing is described.
(For example, see Patent Document 5).
It is well known in the art that the disaster prevention equipment should be operated when a set time has elapsed since the occurrence of a fire. (If necessary, JP-A-61-148597 and JP-A-6-94780).
In addition, control for filling the water pipes with the water from the fire hydrant is usually performed, and the water filling time is a matter that can be appropriately set by those skilled in the art.
And it is usual to stop the apparatus which notifies a fire suitably.
Providing the above-mentioned known fire alarm device has been easily conceived by those skilled in the art. Also, when starting disaster prevention equipment, adopt the above-mentioned conventional well-known technology, set the startup time, and display according to the work status with indicator lights also during fire extinguishing, It is only a design change that can be made by those skilled in the art.
JP-A-5-319721 Japanese Patent Laid-Open No. 2002-274768 JP-A-2002-224239 JP 58-207263 A JP 2001-276270 A

  In the event of a fire, what is the problem of the means of appropriately selecting the fire doors to cool the appropriate floors with water spills so that they do not spread to the car hoistway and close the fire doors in order from near the fire floor? It is a hoistway fire alarm device to solve.

When a fire occurs on the first floor, the switch on the top floor comes into contact with the cam of the car, the contact is closed, and the solenoid valve is activated, so that the water discharge dial and the firewall dial on the hoistway fire alarm panel The fire door dial and fire extinguishing dial are activated, and the water discharge dial on the hoistway fire alarm panel is set to 5 minutes from the 1st floor to the 5th floor. After 5 minutes, the water discharge control device from the 1st floor to the 5th floor is installed. Operate and quickly cool the inside of the hoistway to prevent the spread of fire and spread of smoke to the upper floor, and the fire wall dials 1, 2, 3 of the hoistway fire alarm panel close to the fire floor are 2, 5 10 minutes total, fire door dial 1, 2, 3 floors set to 4, 7, 12 minutes, fire wall dial 2 minutes later, the first floor fire wall control device will operate, The safety circuit switch is closed by closing the firewall on the left side and the front firewall. 1 minute after the switch is closed, the second fire wall control device is operated, the right fire wall on the first floor is closed, and the safety circuit switch is closed to allow the fire door 1 to be closed, and the solenoid valve is activated. Then, after 4 minutes, the fire door dial has the option to operate the fire door control device on the first floor, close the first floor of the hoistway with the fire door, and close the fire door on the first floor close to the immediate fire floor. It is possible to prevent the spread of fire and make it possible to confirm the safety with a safety circuit. In order, the second floor close to the fire floor is operated in 5 minutes, and then the third floor is operated in 10 minutes. The second and third floors are operated in sequence with the second firewall control device that operates when the safety circuit switch is closed by overturning the left and front firewalls, and the safety circuit is closed by closing the right firewall When the switch is closed, the fire door dial is on the second floor 7 minutes after the solenoid valve is activated. Twelve minutes later, the fire door control device is operated in sequence on the third floor, and the second and third floors of the hoistway are closed with fire doors to prevent the diffusion of smoke above the hoistway. Since the fire wall on the right side was closed 1 minute later and the fire door was closed with a time difference between each floor, the hoistway fire was effective. Means to set the water discharge dial on the alarm panel to 5 minutes from the 1st floor to the 5th floor, and 5 minutes after the solenoid valve operates, the water discharge control device operates to make the 5th floor from the 1st floor to the 5th floor If the water discharge control device on the 1st floor or 5th floor of the hoistway is operated , the time selection of the appropriate water discharge dial can be set appropriately according to the floor where the fire broke out. There is means to operate any one of the water discharge control devices up to the appropriate, fire extinguishing dial is the first floor to the fifth floor In set 30 minutes meter, a hoistway fire alarm device comprising operating the fifth floor of a fire extinguishing controller from the first floor to the 30 minutes after the solenoid valve is operated.

In the present invention, when a fire occurs on the first floor, the car is moved up and retracted to the uppermost floor to stop the operation and operate the solenoid valve. Set the floor to 5 minutes and operate the water discharge control device 5 minutes later to discharge water, and the fire floors from the 1st floor to the 5th floor are located near the floor where the fire broke out corresponding to the spread of fire. Immediately cool to prevent the spread of fire and the spread of smoke, fire barrier dials 1, 2, 3 2, 5, 5 to close the fire doors on the 2nd and 3rd floors in order from the first floor of the fire floor Set to 10 minutes and operate the fire wall control device on each floor to close the fire wall on the left side of the hoistway and the front fire wall. Set the twelve minutes, operate the fire door control device on each floor, close the hoistway with the fire door 1 The fire extinguishing dial is set to 30 minutes from the first floor to the fifth floor, the fire extinguishing control device from the first floor to the fifth floor is operated 30 minutes later, the infrared detector is operated, 5 minutes after the infrared detector stops detecting infrared rays, the water discharge control device is stopped to stop water discharge, and the fire wall on the left side of the hoistway on each floor closed by the operation of the fire wall control device One minute after the safety circuit switch is closed by the front fire wall and the safety circuit switch is closed, the second fire wall control device is operated to close the right fire wall, and the solenoid valve is operated. Two minutes later, the first floor fire wall control device operates to close the left and front fire walls on the first floor hoistway, and the second fire wall control device closes the safety circuit switch 1 Operate after a minute and to the right of the first floor hoistway The fire door control device is operated 4 minutes after the solenoid valve is operated, and the first floor of the hoistway is hermetically closed with the fire door 1, and the fire door on the first floor near the fire floor is immediately effective. To prevent the spread of fire and the spread of smoke to the upper floor, and 5 minutes after the operation of the solenoid valve, the second floor fire wall control device is operated and the second floor hoistway And the second firewall control device operates one minute after the safety circuit switch is closed to close the right firewall on the second floor hoistway, The fire door control device is operated 7 minutes after the solenoid valve is operated, the second floor of the hoistway is hermetically closed with the fire door 1, and the fire wall control on the third floor is performed 10 minutes after the solenoid valve is operated. The device operates to close the left and front firewalls of the 3rd floor hoistway, and the second firewall controller is the safety circuit 1 minute after the switch is closed, the fire wall on the right side of the 3rd floor hoistway is closed, 12 minutes after the operation of the solenoid valve, the fire door controller is operated, and the 3rd floor of the hoistway is opened. Since the fire door 1 is hermetically closed, smoke in the hoistway is prevented from diffusing to the upper floors, and safety can be confirmed by the operation of the fire wall control device and fire door control device. Five minutes later, the water discharge control device from the first floor to the fifth floor is operated to discharge water, and after 30 minutes from the operation of the solenoid valve, the fire extinguishing control device from the first floor to the fifth floor is operated, The detector is activated, and after 5 minutes after the infrared detector stops detecting infrared rays, the water discharge is stopped. Therefore, even if a fire occurs on any floor from the first floor to the fifth floor in the hoistway, As a hoistway fire warning device that can cope with

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  When a fire breaks out, the car 22 is retreated to the top floor of the hoistway, and when the car 22 stops on the top floor, it rides on the switch 18 provided on the top floor. It is known that the car cam 43 abuts and the contact 18a is closed to stop the car 22 from operating.

  The embodiment will be described with reference to FIGS. 1 and 2. In the event of a fire, the car 22 is located on the top floor and the counterweight 13 is located on the bottom floor, and the counterweight 14 is separated from the car hoistway 21 in FIG. The fire doors 1 are provided on the first, second, and third floors of the car hoistway 21.

As shown in FIG. 8 and FIG. 13, the electromagnetic valve 15 is installed between the hoistway fire alarm panel 40 and the fire hydrant 30, and piped by the water pipe 39 to each floor from the first floor to the fifth floor through the water pipe. An electromagnetic valve 42 and a water discharge nozzle 25 are provided, and similarly, an infrared detector 31 is provided on each floor from the first floor to the fifth floor by electric wiring from the hoistway fire alarm panel 40 to the infrared detector 31, and a water discharge facility. Are drilled in each floor hoistway wall. When the switch 18 on the uppermost floor contacts the cam 43 of the car 22 to close the contact 18a and the solenoid valve 15 operates, the water discharge dial 48, the fire wall dial 46 and the fire door dial of the hoistway fire alarm panel 40 are operated. 47 and the fire extinguishing dial 49 operate.

Referring to FIGS. 5 and 7, the fire wall 34 and the fire walls 8 and 9, which are pivotally attached to the fire wall frame 44 by hinges 28 and 28 around the rails 14 and 14 on both sides, fall around the rail 14. The safety circuit switch 3b, 4b, 8b, 9b is closed by the fire wall that is closed and overturned, and the rails 14, 14 come into contact with each other so that the closing can be confirmed. Each of the fire walls 2, 5, 6, 7, 10, 11, and 12 has both ends at the rotating shafts 34, 3
4 is pivotally mounted on the fire wall 44 in a standing state, and if the fire wall is overturned closed, the safety circuits switches 2b, 5b, 6b, 7b, 10b, 11b, 1b,
If 2b is closed, the safety of the fire wall control device 23 and the second fire wall control device 23 can be confirmed, and the car hoistway 21 is always standing up and opened, and the fire wall is fired from the fire wall 2 as shown in FIG. Wall 12
As shown in FIG. 6, the fire door receiving frame 27 pivotally attached to the front end of the fire wall,
27 also falls, and the fire door 1 is pivotally mounted on the fire door frame 45 having the rail gauge width by the rotary shafts 43 and 43 in an upright state, and the fire door control device 24 operates to close the fire door 1 by overturning. Fire door 1
Is closed over the fire door receiving frames 27, 27 .
As shown in FIGS. 3 and 4, the fire walls 2, 3, 4, 5 and the front fire wall 6 are arranged on the left side of the fire wall frame 44 in the hoistway which is pivotally attached to the fire wall frame 28 by hinges 28, 28. The fire wall control device 23 is installed, and the safety circuit switches 2b, 3b, 4b, 5b, 6b are operated by the fire wall that falls over the hoistway.
1 minute after the switch is closed and the switches 2b, 3b, 4b, 5b, 6b of the safety circuit are closed.
The fire wall control device 23 is operated, and the right fire wall 7, 8, 9, 10, 11, 1 of the hoistway is operated.
2 is closed, and the switches 7b, 8b, 9b, 10b, 11b,
2b is closed, and the fire door 1 is rotated around both ends of the rail gauges 14 and 14 with the rail gauge interval as shown in FIG. The fire door 1 is pivotally mounted on the fire door frame 45 in an upright state in which both ends of the fire door 1 can be closed over by rotating shafts 34, 34. If it operates, the fire door 1 is closed, and falls over the fire door receiving frames 27 and 27 so as to be hermetically closed.

As shown in FIG. 8, rotating shafts 34, 34 are provided on both ends of the fire door 1 and are supported by bearings provided on the fire door frame 45, and the fire door 1 is in an upright state on the fire door frame 45. The fire door control device 24 on the first floor operates 4 minutes later, and the fire door 1 that has stood up falls on the fire door receiving frames 27 and 27 at the front end of the fire wall, and the width of the rail gauge Because the fire door 1 is overturned and closed on the fire door receiving frames 27 and 27 around the rails 14 and 14 intervals, the fire door 1 is closed in order from the first floor to the second floor and then to the third floor. In addition, since each floor of the car hoistway 21 is hermetically closed by the fire door 1 one by one, the noise caused by the impact at the time of closing is reduced.

As can be seen from FIG. 4, if it is understood that the fire door 1 is closed when the switch 1 b is closed by the cam 43 provided on the fire door 1 that is overturned closed, the safety of the fire door control device 24 can be confirmed. A key portion 33 that is a part of the locking device protrudes from the portion, and when the fire door 1 is closed by the key portion 33, the front portion of the fire door receiving frame 27 at the front end of the fire wall is disposed at the center. A key receiving part is provided, and the fire door 1 is fitted with the key receiving part 41 when closed.

  Fire door 1 width is set to the rail gauge width, fire door 1 is received on fire door receiving frames 27 and 27, hermetically closed, and the fire door 21 from the first floor to the third floor of the elevator hoistway 21 one by one 1, the floor of the car hoistway 21 is hermetically closed.

As is known in the art, in the event of a fire, smoke flows into the car hoistway 21 and the smoke detector 16 provided at the upper end of the landing doorway is activated, the contact 16a is closed, the relay 17 is energized and the contact is made. When 17a is closed, the fire detection control device 29 operates, and the car 22 is moved up toward the top floor to stop operation as shown in FIG. 12, and the red light 50 of the hoistway fire alarm device 40 is stopped. The fire alarm buzzer 51 is to be notified, and since it is connected to the switch button 52 (b contact lock type), the lighting of the red light 50 to notify the fire and the fire alarm buzzer 51 have been notified. It has been conventionally known that the switch button 52 is unlocked to immediately turn off and mute.

When a fire breaks out on the first floor, the solenoid valve 15 operates, so the water discharge dial 48 of the hoistway fire alarm panel 40 is set to a total of 5 minutes from the 1st floor to the 5th floor. The water discharge control device 26 up to the fifth floor is operated, the electromagnetic valve 42 is operated, and water is discharged from the water discharge nozzle 25 piped from the fire hydrant 30 by the water distribution pipe 39. After the solenoid valve 15 is operated, the fire is extinguished. Since the dial 49 is set to 30 minutes from the first floor to the fifth floor, after 30 minutes, the fire extinguishing control device 32 from the first floor to the fifth floor is operated, the infrared detector 31 is operated, and the above infrared detection Five minutes after the vessel 31 no longer detects infrared rays, the water discharge controller 26 is stopped to stop water discharge.

FIG. 10 is a detailed explanatory view of the corner control device for the first floor of the fire wall control device 23, the second fire wall control device 23, the fire door control device 24, and the water discharge control device 26. It is known that it is evacuated to the top floor, the contact 16a is closed by the smoke detector 16, the relay 17 is energized, the contact 17a is closed, the fire detection control device 29 is controlled, and the car 22 is as shown in FIG. It has been conventionally known that the switch 18 comes into contact with the cam 43 and the contact 18a is closed in order to stop the operation toward the uppermost 5th floor.
When a fire occurs on the first floor, when the switch 18 on the top floor contacts the cam 43 of the car 22 and the contact 18a is closed and the solenoid valve 15 is activated, the water discharge dial 48 of the hoistway fire alarm panel 40 and The fire wall dial 46 and fire door dial 47 and the fire extinguishing dial 49 operate, and the fire wall dial 46 sets the 1, 2, and 3rd floors as 2, 5, and 10 minutes, and in order 2, 5, and 10 minutes later Is to operate the fire wall control device 23 on the first, second, and third floors. First, the fire wall control device 23 on the first floor is operated two minutes after the first floor of the fire floor, and the left side of the hoistway The fire wall 2-5 and the front fire wall 6 are closed, and the switch 2b-6b of the safety circuit is closed by the fire wall. One minute after the switch 2b-6b of the safety circuit is closed, the second fire wall control is performed. Operate the device 23, fire wall 7- on the right side of the first floor 2 is closed, the switch 7b-12b of the safety circuit by the firewall closes, because fire door dial 47 has been set to 1, 2, 3 floor 4,7,12 minutes meter, solenoid valve 15 operation 4 minutes after that, the fire door control device 24 on the first floor operates, and the fire door 1 falls on the fire door receiving frames 27 and 27 at the tip of the fire wall that has already fallen to the first floor of the hoistway, and 1 of the hoistway. The floor is hermetically closed with the fire door 1, and the second floor and the third floor fire wall control device are operated in the same order from the first floor, and the left side of the fire wall, the front fire wall, the second floor and the third floor When the right fire wall is closed by the fire wall control device 23 and the safety circuit switch 7b-12b is closed by the fire wall, the second floor and the third floor of the fire door dial 47 are sequentially set to 7 minutes and 12 minutes, respectively. Set the minute meter, and after the solenoid valve 15 operates, the second floor is 7 minutes later, the third floor is 12 minutes later, and the fire door control device 24 is turned on. It is created, in which the second and third floors of the hoistway and to be sealed closed by fire door 1 in turn.

Referring to FIG. 11 in detail , when a fire occurs on the first floor, the conventional elevator operation method is to retract the car 22 to the top floor and bring the cam 43 of the car 22 into contact with the switch 18 on the top floor. When the contact point 18a is closed and the solenoid valve 15 is operated, the water discharge dial 48 of the hoistway fire alarm panel 40 is operated, and the first floor to the fifth floor are set to a total of 5 minutes. The floor water discharge control device 26 is operated to cool the inside of the hoistway with water discharged from above to prevent immediate fire spread, and the fire floor is focused on the water discharge dial 48 from the first floor to the fifth floor. Five minutes after setting the minute meter, the water discharge control device 26 is operated so that the time can be selected on any floor from the first floor to the fifth floor to prevent the immediate fire from spreading and prevent the inflow of smoke upward. To do.
In addition, when the contact 18a of the switch 18 provided on the top floor is closed and the solenoid valve 15 is operated, the fire extinguishing dial 49 of the hoistway fire alarm panel 40 sets the first floor to the fifth floor to 30 minutes, After 30 minutes, the fire extinguishing control device 32 from the 1st floor to the 5th floor is operated to operate the infrared detector 31. After 5 minutes after the infrared detector 31 no longer detects infrared light, It is assumed that the water discharge is stopped by stopping the device 26.

Since the fire wall dial of the hoistway fire alarm panel 40 is set to 1, 2, 3 floors as 2, 5, 10 minutes, the fire wall control device on the first floor 2 minutes after the solenoid valve 15 operates. 23, the firewall on the left side and the front of the hoistway are closed, the safety circuit switch is closed by the closed firewall, and the second firewall control device 23 is 1 minute after the safety circuit switch is closed. The fire barrier on the right side of the hoistway is closed, the safety circuit switch is closed with the closed fire wall, and the fire door dial 47 is set to 4, 7, 12 minutes on the 1st, 2nd and 3rd floors. 4 minutes after the solenoid valve 15 is operated, the fire door control device 24 is operated, and the fire door 1 is overturned and closed on the fire door receiving frame 27 at the tip of the fire wall that has already been overturned. The floor is hermetically closed with fire door 1, and the second and third floors of the hoistway are hermetically closed with fire door 1 in sequence. Prevents smoke hoistway from diffusing into the upper floors, when the switch 1b of the safety circuit in fire door 1 of a fall closed closed closed, the safety can be confirmed by the operation of the fire door control device 24.

One minute after the safety circuit switch 2b-6b is closed by closing the left side of the first floor and the front firewall in the operation of the firewall control device 23, and the switch 2b-6b of the safety circuit is closed, the second firewall If the control device 23 is operated and the safety circuit switch 7b-12b is closed by closing the right fire wall of the hoistway, the fire door dial on the first floor is set to a quarter meter, so the potential valve 15 operates. 4 minutes after that, the fire door control device 24 operates, the hoistway on the first floor is hermetically closed with the fire door 1, and the fire door 1 to be overturned is the tip of the fire wall that has already been overturned as shown in FIG. 6. The fire door control device 24 on the third floor is operated after 7 minutes and the fire door control device 24 on the third floor after 12 minutes. To the 3rd floor is closed with the fire door 1 and the fire wall controller 23 and the second floor The fire wall control device 23 and the fire door control device 24 can be operated and confirmed to be safe, and since there is a time difference between the above-mentioned fire wall and the fire door falling over, the effect of reducing the noise of the impact sound is of course smoke. The effect of preventing diffusion to

Since the water discharge dial 48 is set 5 minutes after the electromagnetic valve 15 is operated, the water discharge control device 26 from the first floor to the fifth floor is operated after 5 minutes to operate the electromagnetic valve 42 and water discharge. Water is discharged from the nozzle 25, and the fire extinguishing control device 32 from the first floor to the fifth floor is operated 30 minutes after the solenoid valve 15 is operated, the infrared detector 31 is operated, and the infrared detector 31 is A hoistway fire in which the water discharge control device 26 from the first floor to the fifth floor is operated, the electromagnetic valve 42 is stopped, and the water discharge from the water discharge nozzle 25 is stopped 5 minutes after the infrared ray is not detected. It is an alarm device.

It is a hoistway front view of the present invention. It is a side view of the hoistway of the present invention. It is a fall closed state explanatory view of a fire wall fire door receiving frame in a hoistway of the present invention. It is a cross-sectional detailed explanatory drawing in the hoistway of the fire door closed state of this invention. It is a detailed explanatory view of the hoistway in a closed state of the counterweight-side fire wall of the present invention. It is a hoistway top view which shows the closed state of a fire door by the rail space | interval of this invention. It is a plane detailed drawing in the hoistway which shows the closed state of the fire wall of this invention. It is a detailed explanatory drawing related to an infrared detector and water discharge showing the open state of the fire wall and fire door on the first floor of the present invention. It is a related figure of the counterweight hoistway of this invention, and the hoistway fire alarm board provided in the building exterior. It is an electrical circuit diagram for the first floor of the fire wall control device and fire door control device of the present invention. It is an electric circuit diagram which shows the whole floor of the fire wall control apparatus of this invention, a fire door control apparatus, a water discharge control apparatus, and a fire extinguishing control apparatus. It is an electric circuit diagram of the electric indicator lamp of the present invention. It is a hoistway attachment related figure of the fire extinguishing control apparatus of this invention, and an infrared detector.

Explanation of symbols

1 Fire door 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
1b, 2b, 3b, 4b, 5b, 6b switch
7b, 8b, 9b, 10b, 11b, 12b switch 13 counterweight 14 rail 15 solenoid valve 16 smoke detector 16, 17, 18 contact 17 relay 18 switch 19 counterweight hoistway 20 governor hoistway 21 passenger car hoistway 22 Car 23 Fire barrier control device 24 Fire door control device 25 Water discharge nozzle 26 Water discharge control device 27 Fire door support frame
28 Hinges 29 Fire detection control device
30 Fire hydrant 31 Infrared detector
32 Fire extinguishing control device 33 Key part
34 Rotating shaft 39 Water distribution pipe 40 Hoistway fire alarm panel 41 Key receiving part
42 Solenoid valve 43 Cam
44 Fire wall frame 45 Fire door frame
46 Fire wall dial 47 Fire door dial
48 Water discharge dial 49 Fire extinguishing dial
50 Red light 51 Fire alarm buzzer
52 Switch button (B contact locking type)

Claims (1)

When a fire occurs on the first floor, the car 22 is retracted to the top floor and moved up to stop the car 22 on the top floor. When the car 22 stops, the top floor switch 18 comes into contact with the car cam 43 and contacts 18a.
When the car is closed, the operation of the car 22 is stopped and the solenoid valve 15 is operated. When the solenoid valve 15 is operated, the water discharge dial 48, the fire wall dial 46, the fire door dial 47, and the fire extinguishing of the hoistway fire alarm panel 40 are operated. By operating the dial 49, the water discharge dial 48 is set to 5 minutes from the first floor to the fifth floor, the water discharge control device 26 is operated to discharge water, and the fire wall dial 46 is 1, 2, Set the 3rd floor to 2, 5 and 10 minutes and operate the fire wall control device 23 on each floor to close the fire wall 2-5 on the left side of the hoistway and the fire wall 6 in front.
The fire door dial 47 sealed closed so the fire extinguished by fire door 1 a hoistway to operate the fire door control device 24 in each floor by setting 1,2,3 floor 4,7,12 minutes meter dial 49 Sets the 30th minute from the 1st floor to the 5th floor, operates the fire extinguishing control device 32 from the 1st floor to the 5th floor after 30 minutes, operates the infrared detector 31, and the infrared detector 31 is 5 minutes after the infrared ray is not detected, the water discharge controller 26 is stopped to stop the water discharge.
The safety circuit switch 2b-6b is closed by the fire wall 2-5 on the left side of the hoistway of each floor closed by the operation of the fire wall control device 23 and the front fire wall 6, and the switch 2b of the safety circuit is closed.
1 minute after -6b is closed, the second firewall control device 23 is operated and the right firewall 7-1 is operated.
2 shall be closed,
Two minutes after the operation of the solenoid valve 15, the first-floor fire wall control device 23 is operated to close the left-hand fire wall 2-5 and the front fire-wall 6 of the first-floor hoistway. The firewall control device 23 operates 1 minute after the safety circuit switch 2b-6b is closed, and the firewall 7-1 on the right side of the first floor hoistway.
2 and 4 minutes after the solenoid valve 15 is operated, the fire door control device 24 is operated, and the first floor of the hoistway is hermetically closed with the fire door 1.
Five minutes after the operation of the solenoid valve 15, the second-floor fire wall control device 23 is operated to close the left-hand fire wall 2-5 and the front fire-wall 6 of the second-floor hoistway. The fire wall controller 23 operates 1 minute after the safety circuit switch 2b-6b is closed, and the fire wall 7-1 on the right side of the hoistway on the second floor.
2 is closed, and the fire door control device 24 is operated 7 minutes after the electromagnetic valve 15 is operated. Later, the firewall control device 23 on the third floor operates to close the firewall 2-5 on the left side of the hoistway on the third floor and the firewall 6 in front, and the second firewall control device 23 is the switch 2b- of the safety circuit. Fire wall 7-1 on the right side of hoistway on the 3rd floor operates 6 minutes after 6b is closed
2 is closed, and the fire door control device 24 is operated 12 minutes after the electromagnetic valve 15 is operated,
The third floor of the hoistway is hermetically closed with the fire door 1 and five minutes after the electromagnetic valve 15 is operated, the water discharge control device 26 from the first floor to the fifth floor is operated to discharge water, and the electromagnetic valve 15 30 minutes after the operation, the fire extinguishing control device 32 from the first floor to the fifth floor is operated to operate the infrared detector 31, and the water discharge is stopped 5 minutes after the infrared detector 31 stops detecting infrared rays. A hoistway fire alarm device.

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