JP2004115148A - Smoke shielding device for elevator hall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoke shielding device for an elevator hall capable of partitioning an elevator landing doorway without shutting passengers in a car 6. <P>SOLUTION: When a fire detector 15 is operated, the elevator is put into fire control operation. When the car 6 rests at an evacuation floor 2-1, the elevator landing doorway is partitioned by a smoke shielding body 5. When the fire detector returns, partitioning of the elevator landing doorway is released and the fire control operation is canceled accordingly for returning to normal operation. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a smoke barrier device for an elevator hall that blocks the entrance and exit of the elevator hall with a smoke shield when a fire occurs to prevent the entrance of smoke into the hoistway.
[0002]
[Prior art]
When the fire detector attached to the building is activated, the elevator moves the car to the evacuation floor, opens the door, closes the door after passengers descend, and enters a rest state. Elevator landing doors have fire protection performance, and the hoistway is fire-blocked by closing the landing doors.
However, the landing door is a sliding door, and a gap inevitably exists between the landing door and the three-sided frame that borders the entrance. When a fire occurs, smoke flows into the hoistway from the gap and rises, so that the fire is strengthened by the so-called chimney effect.
Therefore, conventionally, in order to prevent the smoke from entering the hoistway from the gap, the landing door is pressed against the three-sided frame at the time of a fire to prevent the smoke from flowing into the hoistway by making the hall door closed. (For example, see Patent Document 1).
Further, a movable hanging wall is lowered from the ceiling by a fire occurrence signal of a smoke detector, and the upper end of a fire door is abutted against this hanging wall to partition an elevator hall (for example, see Patent Document 2). ).
[0003]
[Patent Document 1]
JP-A-09-267985 (paragraphs 38 to 41, FIG. 1)
[Patent Document 2]
JP-A-02-74268 (page 4, lower right block, line 4 to page 5, upper left block, line 7, FIG. 2)
[0004]
[Problems to be solved by the invention]
The conventional smoke shielding device for the landing of the elevator has blocked the entrance and exit of the landing or partitioned the elevator hall as described above to prevent the smoke from flowing into the hoistway.
However, there is a problem in that simply closing the hall entrance or dividing the elevator hall may trap passengers in the car or in the elevator hall.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and provides a smoke shielding device for a landing of an elevator which can block a landing entrance and exit without admitting passengers in a car and prevent inflow of smoke. Things.
In addition, in the event that a passenger is trapped in a car, a compartment is temporarily released and a smoke shielding device for an elevator hall that can rescue the passenger is obtained.
Further, it is an object of the present invention to obtain a smoke shielding device for an elevator landing in which the electric power required for partitioning the landing entrance is leveled to reduce the capacity of the emergency generator.
In this case, it is possible to obtain an elevator landing smoke-supplying device capable of achieving effective smoke-blocking by partitioning the landing entrances in order according to the priority.
Still another object of the present invention is to provide a smoke shielding device for a landing of an elevator, which can save the trouble of releasing the section of the landing entrance.
[0006]
[Means for Solving the Problems]
The smoke stop device of the elevator hall according to the present invention is configured such that when the fire detector operates, the elevator is set to the fire control operation, and the hall entrance is partitioned by the smoke shield, and when the fire detector returns, the partition of the hall entrance is released. The fire control operation was canceled.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
1 to 4 show a first embodiment of the present invention. In the following description, the suffix of the code is an identification mark indicating the name of the car or the floor name. In each drawing, the same or corresponding portions are denoted by the same reference characters, and redundant description will be omitted as appropriate.
FIG. 1 is a block diagram showing the overall configuration of a smoke shielding device for an elevator landing, which is composed of N elevators from Unit 1 to Unit N, and shows a vertical section of a hoistway for each unit side by side.
The elevators of the first to Nth units installed on the hoistway 1 are designed to go up and down to the top floor 2-T with the first floor 2-1 as an evacuation floor. The landing doorways on each floor of Unit 1 are bordered by three-way frames 3-11 to 3-1T and are always closed by landing doors 4-11 to 4-1T. The same applies to other cars, and the landing entrances on each floor of the car N are framed by three-way frames 3-N1 to 3-NT and are always closed by the landing doors 4-N1 to 4-NT.
[0008]
Further, at the entrances and exits of each floor of each unit, outside the landing doors 4-11 to 4-1T and 4-N1 to 4-NT, smoke shields 5-11 to 5-1T and 5-N1 comprising shutters are provided. ５−5-NT are provided. The shutters 5-11 to 5-1T and 5-N1 to 5-NT are always wound up and stored in the upper part of the landing doorway, and hang down when a fire occurs and the landing doors 4-11 to 4-1T and The landing entrance is closed so as to overlap with 4-N1 to 4-NT, and the hoistway 1 is smoke-blocked.
[0009]
Cars 6-1 to 6-N of the first to Nth cars are installed in the hoistway 1, and the car operation panels 7-1 to 7-N are respectively mounted on the cars 6-1 to 6-N. Is installed, and car doors 8-1 to 8-N are provided at the doorway, and further, door control devices 9-1 to 9-N for controlling the car doors 8-1 to 8-N are installed. I have.
Each of the cars 6-1 to 6-N is suspended by a main rope to which the counterweights 11-1 to 11-N are attached, respectively, and is driven up and down by the hoisting machines 10-1 to 10-N.
[0010]
Fire detectors 15-1 to 15-N are provided on each floor 2-1 to 2-T, and their signals are sent to a disaster prevention center 16 provided in the building for centralized monitoring. The operation signals of the fire detectors 15-1 to 15-N are also transmitted from the disaster prevention center 16 to the elevator group management device 17, and the fire floor is detected by the fire floor detection circuit 17b. By specifying the fire floor, the closing order of the shutter 5 is determined by the shutter opening / closing order determination circuit 17a.
[0011]
Each of the car controllers 18-1 to 18-N controls the elevation of the cars 6-1 to 6-N by the normal operation circuit 18c in normal times. When a fire occurrence signal is received from the group management device 17, it is switched to the fire control operation circuit 18d. This fire control operation circuit 18d returns the cars 6-1 to 6-N to the evacuation floor 2-1, closes the rear doors 4 and 8 after the passengers get off, and makes them rest.
The shutter opening / closing command circuit 18a commands opening / closing of the shutters 5-11 to 5-1T and 5-N1 to 5-NT in accordance with an instruction from the shutter opening / closing order determination circuit 17a. Based on this command, the shutter driving device 5b shown in FIG. 2 operates to close the shutters 5-11 to 5-1T and 5-N1 to 5-NT.
[0012]
FIG. 2 is a vertical sectional view of a hoistway showing details of the smoke shield formed of the shutter 5. The shutter 5 is connected to a blade plate 5a having a longitudinal direction oriented in the horizontal direction. The shutter 5 is suspended from an opening formed in the upper frame of the three-sided frame 3 and has guide grooves 3a formed at both ends in a vertical frame of the three-sided frame 3. To move up and down. In normal times, it is wound up by the shutter driving device 5b and stored above the landing entrance. At this time, the opening detection means 5o is activated, and a signal to that effect is sent to the individual controller 18.
[0013]
When the fire detector 15 is operated, the elevator is switched to the fire control operation circuit 18d, and a closing command is issued from the shutter opening / closing command means 18a. The shutter driving device 5b extends the blade plate 5a. The blade plate 5a is guided by the guide groove 3a and descends to close the landing entrance outside the landing door 4. When the landing doorway is closed, the closing detection means 5c operates, and a signal to that effect is sent to each vehicle control device 18.
When the fire detector 15 returns, the elevator is switched to the normal operation circuit 18c, and an opening command is issued from the shutter opening / closing command means 18a. Based on this opening command, the shutter driving device 5b winds up the blade plate 5a to open the landing entrance. When the door is opened, the opening detection means 5o operates, and a signal to that effect is sent to each unit controller 18.
FIG. 3 is a front view of the landing, showing the landing button 12 and the hall lantern 13, and showing the shutter 5 in the middle of opening and closing.
[0014]
The operation of the smoke shielding device when a fire occurs will be described with reference to FIG.
1. When a fire of closing the shutter 5 on the floor 2 except the evacuation floor 2-1 occurs, the fire detector 15 is activated in step S11. This operation signal is sent to each car controller 18 via the disaster prevention center 16, and the elevator is operated for fire control in step S12. In step S13, the shutter opening / closing order determination circuit 17a of the group management device 17 determines the closing order of the shutter 5 based on the operation signal of the fire detector 15 from the disaster prevention center 16. Here, the shutter 5 on the fire floor 2 is preferentially closed. Subsequently, it is assumed that the shutter 5 is closed for each floor 2 from the floor 2 close to the fire occurrence floor 2 upwards, and the shutter driving device 5b closes the shutter 5 of the corresponding floor based on the above-mentioned command by the shutter opening / closing command circuit 18a.
Next, in step S14, the shutters 5 on the floor 2 below the fire floor and excluding the evacuation floor 2-1 are sequentially closed from the floor 2 close to the fire floor 2.
[0015]
2. Steps S15 to S18 for closing the shutter 5 of the evacuation floor 2-1 indicate closing of the shutters 5-11 to 5-N1 of the respective units on the evacuation floor 2-1. That is, it is determined whether or not the car 6 has returned to the evacuation floor 2-1 and stopped in step S15. If not stopped, the fire control operation is continued in step S16. If the shutter is stopped, a command to close the shutter 5 on the evacuation floor 2-1 is issued from the shutter opening / closing command circuit 18a of the stopped machine in step S17. To close. In step S18, it is checked whether the shutter 5 of the evacuation floor 2-1 has been closed for all the units. If there is a shutter 5 that has not been closed, the process returns to step S15, and the processes of steps S15 to S18 are performed for the next car. When the shutters 5 on the evacuation floor 2-1 of all the units are closed, the process proceeds from step S18 to step S19, and the fact is notified to the disaster prevention center 16.
[0016]
3. Steps S20 to S25 for opening the shutter 5 indicate opening of the shutter 5 that has been closed. When the fire detector 15 is activated, the shutters 5 on all floors 2 are in the closed state in steps S20 and S21, and the car 6 continues resting.
When the fire detector 15 returns, the procedure moves from step S20 to step S22, and the shutters 5 of all the units on the evacuation floor 2-1 are opened. Subsequently, in step S23, the shutters 5 of all the units except for the fire occurrence floor 2 are sequentially opened for each floor. Next, in step S24, the shutters 5 of the fire occurrence floor 2 are finally opened for all the units, and in step S25, the fire control operation is canceled and the operation returns to the normal operation.
[0017]
According to the first embodiment, when the fire detector 15 operates, the elevator is set to the fire control operation, and the shutter 5 of the fire floor 2 is closed with priority over other fires. Since the shutter 5 on the upper floor 2 is closed and then the shutter 5 on the lower floor 2 below the fire occurrence floor 2 is closed, it is possible to effectively prevent the inflow of smoke into the hoistway 1. It is possible to achieve effective smoke shielding.
In addition, since the shutter 5 is closed every floor 2, the peak power accompanying the closing of the shutter 5 is leveled, and the power supply capacity can be reduced.
Furthermore, since the shutter 5 of the evacuation floor 2-1 is closed after the car 6 returns and is in a rest state, the passenger is not trapped in the car 6.
Furthermore, since the shutter 5 is opened for each floor 2, the peak power accompanying the opening is leveled as in the case of closing, and the power supply capacity can be reduced.
Furthermore, since the shutter 5 is opened by returning the fire detector 15, the labor required for opening can be simplified.
[0018]
Embodiment 2 FIG.
In the second embodiment, the passengers trapped in the car 6 suspended on the evacuation floor 2-1 are rescued from the landing side.
As described in the procedure S15 of FIG. 4 and FIG. 17, when the fire control operation is performed, the elevator arrives at the evacuation floor 2-1 and stops after opening the door. After that, since the shutter 5 of the evacuation floor 2-1 is closed, it is usually unlikely that passengers are trapped in the car 6. Therefore, the second embodiment is a treatment for an emergency.
5 and 6 show a second embodiment of the present invention. In step S31, it is assumed that the shutter 5 of the evacuation floor 2-1 is closed and the passenger is locked in the car 6. It is assumed that the landing button 12 of the evacuation floor 2-1 has been continuously pressed for a predetermined time To or more. As shown in FIGS. 6A and 6B, the shutter 5 on the evacuation floor 2-1 is set to the openable mode at the time t2 when the time To has elapsed from the time t1 (steps S32 and S34). If the button is not continuously pressed for the predetermined time To or more, the process proceeds to step S33, and the car 6 continues the sleep state on the evacuation floor 2-1.
[0019]
As shown in FIG. 6C, when the hall button 12 is intermittently operated within the openable mode time T1, the process proceeds from step S35 to step S37, and the number of operations Pn is counted. If the hall button 12 is not operated, the openable mode is canceled after the elapse of the time T1 in step S36. If the number of operations Pn is equal to or smaller than the maximum number of machines N in step S38, the process proceeds to step S40, and the shutter 5-n1 of the nth machine corresponding to the number of operations Pn is opened. Subsequently, in step S41, the car door 8-n and the landing door 4-n1 of the car n corresponding to the number of operations Pn are opened to rescue the passenger. In FIG. 6D, after the shutter 5-31 of the third car is opened at time t3, as shown in FIG. 6E, the car door 8-3 and the landing door 4-31 of the third car are opened at time t4. Is done. If the number of operations Pn exceeds the maximum number of cars N in step S38, the process proceeds to step S39, the number of operations Pn of the hall button 12 is reset, and the process returns to step S32.
As shown in FIG. 6E, the doors 4-31 and 8-3 are opened for a predetermined time Tdo, and then start closing at time t4 (procedures S42, S43, and S44). When the doors 4-31 and 8-3 are closed, the shutter 5-n1 is subsequently closed at time t6 (procedures S45, S46 and S47).
The hall button 12 functions as a section release unit that opens the shutter 5-n1.
[0020]
According to the second embodiment, the shutter 5-n1, the car door 8-n, and the hall door 4-n1 can be temporarily opened by operating the hall button 12, so that the passenger is trapped in the car 6 by any chance. Even if they do, they can be rescued.
[0021]
Embodiment 3 FIG.
In the third embodiment, similarly to the second embodiment, when a passenger is trapped in the car 6 suspended on the evacuation floor 2-1, the passenger can escape by himself / herself by operating the car operation panel 7. Things.
FIG. 7 shows a third embodiment of the present invention. When the door open button 7a of the car operation panel 7 is operated in step S51, the shutter 5 of the corresponding car is opened in step S53. Subsequently, in step S54, the car door 8 and the landing door 4 of the corresponding car are opened. The car door 8 and the landing door 4 are opened for a predetermined time Tdo and then started to close (procedures S55, S56, S57). When the car door 8 and the landing door 4 are closed, the shutter 5-n1 is subsequently closed (steps S58, S59, S60).
The door opening button 7a functions as a section release unit that opens the shutter 5-n1.
[0022]
According to the third embodiment, the shutter 5-n1, the car door 8-n, and the landing door 4-n1 can be temporarily opened by operating the car operation panel 7, so that the passenger is trapped in the car 6 by any chance. If so, the passenger can escape from the car 6 on his own.
[0023]
【The invention's effect】
As described above, when the fire detector is activated, the elevator is set to the fire control operation, and the entrance / exit is divided by the smoke barrier. When the fire detector returns, the division of the entrance / exit is released and the fire control operation is performed. This is to cancel.
For this reason, it is possible to prevent the inflow of smoke into the hoistway, and since the elevator stops after arriving at the evacuation floor by fire control operation, it is possible to prevent passengers from being trapped in the car, This has the effect.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an entire configuration of a smoke shielding device for an elevator landing according to Embodiment 1 of the present invention.
FIG. 2 is a longitudinal sectional view showing details of the smoke shielding device according to Embodiment 1 of the present invention.
FIG. 3 is a front view of a landing according to the first embodiment of the present invention.
FIG. 4 is a flowchart showing the operation of the smoke shielding device according to Embodiment 1 of the present invention.
FIG. 5 is a flowchart showing the operation of the smoke shielding device according to Embodiment 2 of the present invention.
FIG. 6 is an explanatory diagram of an operation of the smoke shielding device according to Embodiment 2 of the present invention.
FIG. 7 is a flowchart showing the operation of the smoke shield device according to Embodiment 3 of the present invention.
[Explanation of symbols]
1 hoistway, 2nd floor, 3 three-sided frame, 4 landing door, 5 shutter, 5a slat, 5b shutter drive, 5c closing detection means, 5o opening detection means, 6 car, 7 car operation panel, 8 car door, 9 door control device, 12 landing button, 15 fire detector, 16 disaster prevention center, 17 group management device, 18 each unit control device.

Claims (7)

When the fire detector attached to each floor is activated, the fire control is switched to the fire control operation, and the car is driven to the evacuation floor to stop the operation. And a control panel for the elevator, wherein the entrance and exit are partitioned by a smoke shield, and the fire detector is returned to open the entrance and exit and release the control operation. 2. The smoke shielding device for an elevator hall according to claim 1, wherein the smoke shield body divides the hall entrance in order for each floor, and breaks the division of the hall entrance. The smoke shielding device for a landing of an elevator according to claim 2, wherein the smoke shielding body partitions the landing entrance on the floor where the fire detector is activated, prior to the landing entrance on another floor. Claim 2 wherein the smoke shield body partitions the landing entrance on the evacuation floor later than the landing entrance on the other floor, and partitions the landing entrance on the evacuation floor after the return of the car. A smoke shield device for the elevator hall according to the above. 2. The smoke shielding device for an elevator hall according to claim 1, further comprising a section releasing means for separating a hall entrance / exit section on an evacuation floor apart from a landing / doorway partition by releasing the control operation. 6. The smoke shielding device for an elevator hall according to claim 5, wherein the section release means is an elevator hall button provided on the evacuation floor. 6. The smoke shielding device for an elevator hall according to claim 5, wherein the section release means is an operation button attached to the car operation panel.

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