JP2002326771A - Elevator device power-supplied by fuel cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply electric power to an elevator device without using a traveling cable of an elevator especially for normally operating the elevator device even in the power failure concerning an electric power supply device of overall energy required for driving an elevator car and the elevator device. SOLUTION: A fuel cell is used as the electric power supply device of a traction machine to drive the car of the elevator device to maintain constantly stable operation of the elevator device regardless of a state of an external electric power source. Additionally, the fuel cell is used for at least one of the electric power sources for a lighting system of the elevator device, a door driving device, a car operation panel, a car inner display device, a landing display device, an air conditioner and a landing button.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply apparatus for driving an elevator car and general energy required for the elevator apparatus, and more particularly, to enable normal operation of the elevator even during a power outage, and to supply power to the elevator apparatus. To a power supply device.

[0002]

2. Description of the Related Art In a conventional elevator apparatus, a system using commercial power supplied from outside is generally used as electric power required for driving an elevator such as a motor drive, a control system, and a display device. A configuration example of this conventional elevator apparatus will be described with reference to FIG. In FIG. 4, a car 10 and a counterweight 11 are connected by a wire rope via a sheave 9, and a motor 8 as a drive source for rotating the sheave 9 is supplied with electric power by the following configuration.
An AC power source 1 as external power passes through a circuit breaker 2, an EMI filter 3, and a filter 4 for reducing harmonics, a converter 5 for converting AC to DC, a capacitor 6, and DC for variable voltage and variable frequency AC. Inverter 7
Supplies power to the motor 8 to control the motor drive.

In a conventional elevator apparatus, a lighting device 12, a door driving device 13, a car operation panel 14, a display device 15, and an air conditioner 16 are provided in or on the car from an external power supply using a traveling cable 17 using a traveling cable 17. And so on.

[0004]

However, the conventional elevator system has the following problems. Since electric power is supplied from the outside, normal operation stops at the time of a power outage, and there is a risk that passengers will be trapped in the car. Therefore, in order to rescue passengers trapped in this car, a storage battery and a charging device are further required, and these power supply devices must be additionally installed.
It was disadvantageous in terms of cost. In addition, converter 5
However, depending on the conversion method, harmonics were generated, which sometimes disturbed the power system.

The traveling cable 17 requires a longer cable as the ascending / descending process is higher. In addition to an increase in the driving weight, the balance is deteriorated, the installation time is lengthened, the maintenance is complicated, and the space of the hoistway is reduced. There were problems such as difficulty in reduction.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to maintain a stable operation of an elevator system regardless of the state of an external power supply. A fuel cell is used as a power supply for a traction machine that drives a car of the apparatus. In the invention of claim 2,
A fuel cell is used for at least one of the lighting device, the door driving device, the car operation panel, the car display device, the hall display device, the air conditioner, and the hall button of the elevator device.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. In FIG. 1, DC power generated by a fuel cell 18 is converted into AC by an inverter 7 and supplied to a motor 8 of a traction machine. The motor 8 serves as power, and the car 10 and the counterweight 11 are moved up and down through the sheave 9. At the same time, power is supplied for the brake operation of the traction machine, speed detection, and speed control.

FIG. 2 shows a second embodiment of the present invention. FIG.
Reference numeral 19 denotes a hoistway, and a car 1 moves inside the hoistway.
0 goes up and down. Reference numerals 20 and 21 denote a hall button and a hall display device provided at the hall, respectively.

FIG. 3 shows a power supply configuration diagram of this embodiment. In FIG. 3, DC power generated by the fuel cell 18 is converted into 100 V AC by an inverter 22 and supplied to the lighting device 12 and the air conditioner 16. Similarly, the electric power generated by the fuel cell 18 is converted into a low-voltage DC voltage by the chopper 23 and supplied to the door driving device 13. The electric power generated by the fuel cell 18 is converted into an appropriate DC voltage by the D / D converter 24 and supplied to the car display device 15 and the car operation panel 14.

The DC power generated by the fuel cell 25 is D
The DC voltage is converted into an appropriate DC voltage by the / D converter 24 and supplied to the hall button 20 and the hall display device 21.

[0011]

The present invention is embodied in the form described above, and has the following effects. By using a fuel cell as the power supply for the elevator drive device, there is no need to supply power from the outside, and the elevator can be operated normally even if there is a power failure.

Also, since the elevator apparatus according to the present invention is independent of the commercial power system, no harmonics flow into this power system. Furthermore, the use of a fuel cell eliminates the need for a lighting device, a door drive device, a car operation panel, a display device in the car, and a traveling cable for supplying power to an air conditioner. The benefits include improvements, shorter installation times, simplified maintenance, and increased shaft space.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment of the present invention.

FIG. 3 is a power supply configuration diagram according to a second embodiment.

FIG. 4 is a diagram showing a configuration example of a conventional elevator.

[Explanation of symbols]

 1 AC power supply 2 Circuit breaker 3 EMI filter 4 Filter 5 Converter 6 Capacitor 7 Inverter 8 Inverter 8 … Motor 9… Sheave 10 …… Car 11 …… Counter weight 12 …… Lighting device 13 …… Door driving device 14 …… Car cab operation panel 15 …… Display device 16… … Air conditioner 17… traveling cable 18… fuel cell 19… hoistway 20… landing button 21… landing display 22… inverter 23 …… chopper 24… D / D converter 25 ……… Fuel cell

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naoki Kasahara 2-4-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Shinjuku NS Building Nippon Otis Elevator Co., Ltd. (72) Inventor Yasuhiko Ajiguchi Nishi-Shinjuku, Shinjuku-ku, Tokyo 2-4-1 Shinjuku NS Building Nippon Otis Elevator Co., Ltd. (72) Inventor Koichi Sakiya 2-4-1 Nishi Shinjuku, Shinjuku-ku, Tokyo Shinjuku NS Building Nippon Otis Elevator Co., Ltd. (72) Invention Person Masao Iwasa 2-4-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Shinjuku NS Building Japan Otis Elevator Co., Ltd. F-term (reference) 3F002 GA03 GB02

Claims (2)

[Claims] 1. An elevator apparatus characterized in that a fuel cell is used as a power supply device for a traction machine for driving a car up and down. 2. A fuel cell is used as at least one of a lighting device, a door driving device, a car operation panel, a display device, an air conditioner, a hall display device, and a hall button in the car. An elevator apparatus characterized by the above-mentioned.