JPH04266377A - Elevator control device - Google Patents

Abstract

PURPOSE:To provide an elevator control device capable of detecting a fire in the machine compartment of an elevator safely without confining passengers in a cage and protecting various devices. CONSTITUTION:There are provided a power supply 1 for feeding power to the drive circuit 4 of an elevator, a breaker device 2 interposed between the power supply and the drive circuit for shutting the power supply off, an operation control device 3 for controlling the drive circuit, a smoke detector 5 for detecting the emission of smoke from the breaker or the operation control device, and a fire occurrence detecting circuit 6. If the smoke detector is actuated, the elevator is stopped at a floor where it can be stopped if the elevator is in operation, or the power supply is shut off by the breaker device, if the elevator is not in operation.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control system that prevents damage to passengers and equipment such as a control system in the event of a fire or the like.

0002

[Prior Art] When a fire occurs in a building, an elevator is operated to a certain floor and stopped, or an emergency elevator is operated for firefighting purposes, and when a fire occurs outside the elevator system, it is operated as a controlled operation. We are conducting specific operations and taking countermeasures for some buildings. However, elevators and control equipment,
In the event of a fire in the elevator machine room, etc. or a smoke emitted from the control equipment, a detection device installed in the building will operate as described above based on information from the building.
Currently, indirect measures are being taken.

0003

[Problem to be Solved by the Invention] However, no countermeasures have been taken in the event that an elevator equipment, particularly a control device, ignites, or a device within the control device ignites due to a surge from the outside, such as a power source. There is a possibility that the elevator may continue to operate even if the fire occurs.

[0004] Then, a part of the equipment becomes malfunctioning, making it impossible to operate as an elevator, and even when the elevator is in operation, it may stop and fail. In other words, passengers using the elevator are trapped inside the elevator. Furthermore, in the case of home elevators, which have recently become popular, it is absolutely impossible for elevator equipment to catch fire, not only due to smoke and ignition from the equipment itself, but also from external factors. Must not be. Furthermore, there is a high possibility that the users will be children or the elderly, and it is necessary to avoid accidents in which people become trapped due to malfunctions.

[0005] From the above points, there is a need for an elevator control system that takes appropriate measures in the event of smoke and fire, prevents passengers from being trapped, and minimizes damage to the control system itself and the impact on the building. ing.

The present invention eliminates the above-mentioned problems and provides elevator control that can appropriately protect the elevator and control device depending on the situation and minimize damage even if smoke and fire ignite in the elevator control device. The purpose is to provide equipment. [Structure of the invention]

[0007]

[Means and effects for solving the problem] A power supply that supplies power to a drive circuit of an elevator, a switching device that is provided between this power supply and the drive circuit and cuts off the power supply, and a control device that controls the drive circuit. An operation control device and a smoke detector that detects smoke from the opening/closing device or the operation control device are provided, and when this smoke detector is activated, if the elevator is in operation, the elevator stops at a floor where it can be stopped, and if the elevator is stopped, If so, the power source is cut off by the switching device.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of the present invention. In the figure, 1 is an elevator power source, 2 is a power switch, 3 is an elevator operation control circuit, 4 is a drive circuit, 5 is a smoke detection device in the elevator control device, and 6 is a fire detection circuit. Next, the operation of the present invention will be explained. When energized, the elevator is operated using the power supplied by the power supply 1, and the power is input to the elevator control circuit 3 via the opening/closing device 2. The elevator control circuit 3 uses this power source to generate power for the elevator system and supplies it to each part. It also performs the main arithmetic processing for operation control and mainly performs operation control.

The drive circuit 4 actually applies the force necessary for operating the elevator according to the commands from the operation circuit, and drives drive circuits such as a rope drive circuit using an electric motor and a cylinder drive circuit using hydraulic pressure to operate the elevator at a specified level. Drive to the floor. If a fire or heat generation occurs in the control device, either during normal times or due to external lightning surges, etc., if smoke is detected by the smoke detector 5 installed inside the panel, the signal will be emitted. The signal is input to the occurrence detection circuit 6. The fire occurrence detection circuit 6 takes the optimal response for the elevator system depending on the operation status of the elevator and the occurrence status of the fire. In other words, if it is in operation, it will be operated to the nearest floor, and from then on, the power cutoff signal 7 will be activated to prevent the spread of the fire.
is output, the power switchgear 2 is cut off, fire energy is cut off from the power supply, preventing the spread of the fire, minimizing damage inside the control panel, and preventing spread of fire outside the panel. Additionally, if a control circuit such as a motor control circuit is damaged by a fire and the elevator is inoperable, the power will be immediately cut off to prevent the fire from spreading. In addition, even if the smoke detection device is activated, the elevator will not be able to operate normally.
If there are no particular problems, it is possible that a fire has broken out in a place that houses control equipment other than the control equipment, and it is necessary to contact the building administrator.

[0010] In other words, in an elevator system, even if a fire occurs, if the initial operation is not affected, the elevator is operated to the nearest floor, the passengers are removed from the elevator, and the elevator is stopped. Prevent fire by cutting off the power. In addition to stopping operation, it is also necessary to cut off the power supply.

[0011]

[Effects of the Invention] By applying the present invention to an elevator control device, even if a fire occurs in the control device due to some circumstances, passengers can be rescued safely, fire can be prevented from breaking out from within the control device, and a fire can be prevented from entering the building. This is especially effective when there is something easily flammable, such as a wooden house, to prevent it from spreading and becoming a source of fire.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

[Explanation of symbols]

1...Power supply, 2...Power switchgear, 3...Operation control device, 4...
Control circuit, 5... Smoke detector, 6... Fire occurrence detection circuit, 7...
Power cutoff signal.

Claims (1)

[Claims] 1. A power supply for supplying power to a drive circuit of an elevator, a switching device provided between the power supply and the drive circuit to cut off the power supply, an operation control device for controlling the drive circuit, A smoke detector is installed to detect smoke emitted by the switchgear or operation control device, and when this smoke detector is activated, if the elevator is in operation, the elevator will stop at a floor where it can be stopped, and if the elevator is stopped, the elevator will be stopped by the switchgear. An elevator control device characterized in that the power source is cut off.