JPH04358680A - Operation device during occurrence of fire for elevator - Google Patents

Abstract

PURPOSE:To ensure safety of passengers in an elevator cage when, during the occurrence of a fire, call back to a specified floor is rendered impracticable after the cage is stopped once. CONSTITUTION:During running of an elevator cage 11, temperature 33 in the vicinity of a scheduled position in which the cage is stopped once is detected. When the detecting temperature 33 exceeds a set temperature, an elevator cage 12 is not stopped once but continues running.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator fire operation system.

0002

[Prior Art] In the conventional fire operation, when a fire detection device is activated while the car 11 is running slightly beyond the second floor as shown in Fig. 4, the car stops at the third floor, which is the nearest floor. If possible, the car 12 will temporarily stop on the third floor. Then, basket 1
3 was called back to a specific floor, the first floor.

0003

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, the car once stops at the nearest floor, but the area near the landing where the car stopped becomes hot due to a fire, and after the car has stopped, it is called back to a specific floor due to a malfunction or the like. No consideration was given to safety in that if the car became inoperable, the inside of the car would become hot, putting passengers in a dangerous situation.

[0004] An object of the present invention is to provide an elevator fire operation device that can ensure the safety of passengers in the car when the car is once stopped and cannot be called back to the specific floor in the event of a fire. It is about providing.

[0005]

[Means for Solving the Problems] In order to achieve the above object, there is provided a fire detection device that outputs a fire detection signal when detecting a fire, and a fire detection device that outputs a fire detection signal when detecting a fire, and a fire detection device that outputs a fire detection signal when the detection device is activated. A fire operation device that calls a car back to a specific floor detects the temperature near the position where the car is scheduled to temporarily stop while it is running, and when the detected temperature is higher than a preset temperature, stops the car from running. A means has been provided to continue the process.

[0006]

[Operation] When the fire detection device is activated while the car is running, it selects the temperature detection device closest to the temporary stop position among the multiple temperature detection devices installed in the hoistway or near the platform to detect the temperature. . The detected temperature is input as a signal to a comparator and compared with a preset temperature value. If the detected temperature is found to be higher as a result of the comparison, the command to decelerate the car speed is blocked, and the car continues to run without temporarily stopping. Thereafter, the same detection and comparison as above is repeated, and if the detected temperature is found to be lower than the set temperature, the car is decelerated to a stop in response to a car speed deceleration command, and then called back to a preset specific floor. Thereby, even if the car cannot be called back to the specific floor after it has stopped, the temperature inside the car will not rise above the set temperature, so the safety of the passengers in the car can be ensured.

[0007]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

[0008] In this embodiment, there are 5 floors from the 1st floor to the 5th floor.
Let the elevator operate between floors.

FIGS. 1 to 3 are diagrams showing a fire operation system according to an embodiment of the present invention. FIG. 1 is a schematic diagram of a hoistway and a car showing the movement of a car during fire operation, and FIGS. Figure 3 shows a circuit diagram of the fire operation device.

[0010] The fire operation of the present invention is as shown in FIG.
If the fire detection is activated while the car 11 is running slightly beyond the floor, the temperature detection device 23 on the third floor, which is scheduled to stop, detects the temperature 33 on the third floor, and the preset temperature value is
If the temperature of the floor is higher, the car 11 passes through the third floor. Thereafter, the temperature 34 on the fourth floor is detected by the temperature detection device 24 on the fourth floor. When the temperature 34 of the fourth floor is lower than the set temperature, the car 12 temporarily stops at the fourth floor, and then the car 1
3 is called back to the first floor of a preset specific floor.

As described above, in the present invention, the car 12 does not stop at a landing floor where the temperature is higher than a preset temperature, so even if it becomes impossible to call back to the specific floor after it has stopped, the car 12 The temperature inside the car will never rise above the set temperature, ensuring the safety of the passengers inside the car.

Next, FIG. 2 shows a circuit of an embodiment of the present invention.
This will be explained with reference to FIG.

First, as shown in FIG. 2, temperature signals 31 to 35 detected by various temperature setting devices 21 to 25 are input to the temperature detection floor selection device, and the car can be stopped at the third floor. Since the vehicle is traveling at a certain position, the position signal 43 is input, and as a result, the selection device selects the temperature signal 33 and outputs it to the comparison device. The comparison device compares and calculates the temperature signal 33 with a preset temperature value 5, and calculates the temperature signal 33.
3 is larger than the set temperature value 5, a deceleration stop prevention signal 6 is output.

Next, as shown in FIG.
Since the deceleration and stop command signal 80 is not outputted by ANDing the AND signal and the deceleration and stop permission signal 81 outputted by fire detection, the car 1 passes through the third floor. After passing the third floor, the car travels to a position where it can stop at the fourth floor, and a position signal 44 is input to the selection device as shown in FIG. As a result, the selection device selects the temperature signal 34 and outputs it to the comparison device. The comparison device compares and calculates the temperature signal 34 and the set temperature value 5, and since the temperature signal 34 is smaller than the set temperature value 5, it does not output the deceleration stop prevention signal 6.

Next, as shown in FIG.
and NAND of fire detection signal 7 output by fire detection
Deceleration stop permission signal 81 output by signal and fire detection
A deceleration and stop command 80 is output by AND, and the car 12 stops at the fourth floor.

[0016]

According to the present invention, even if the fire detection device operates while the car is running, it will only stop if the temperature near the scheduled stop position is lower than the preset temperature. Even if it becomes impossible to call back passengers to a specific floor, the temperature inside the car will not rise above the set temperature, and the safety of the passengers is ensured.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a hoistway and a car showing the movement of the car during fire operation.

FIG. 2 is a circuit diagram of a fire operation device.

FIG. 3 is a circuit diagram of the fire operation device.

FIG. 4 is a schematic diagram of a hoistway and a car showing the movement of the car during fire operation in the prior art.

[Explanation of symbols]

11 Running basket 12 Car at the time of stopping at the nearest floor 13 Cart when calling back to a specific floor 21-25 Temperature detection device

Claims (1)

[Claims] Claims: 1. A fire detection device that outputs a fire detection signal upon fire detection, and a fire operation in which when the detection device is activated, the car is called back to a preset specific floor after it is temporarily stopped while traveling. An elevator characterized in that the device is provided with a means for detecting a temperature near a position where the car is scheduled to temporarily stop while it is running, and causing the car to continue running when the detected temperature is higher than a preset temperature. Fire operation device.