JP2014172710A - Elevator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator system capable of effectively utilizing a spare power of an elevator.SOLUTION: An elevator system comprises: an electric power accumulation part 15 for storing either an electric power from an AC power source 1 to drive an elevator or a regenerative electric power at an elevator driving time so that it becomes an elevator driving backup power source; a power supply part 40 for becoming an interface to supply the electric power stored in the electric power accumulation part 15, to another electric power facility; a power supply change-over switch 17 for switching whether or not the electric power stored in the power supply part 15 is fed to the power supply part 40; and a changeover determination control unit 19 for executing the changeover control of the power supply change-over switch 17; and a changeover determination control part 19 for executing the changeover control of the power supply change-over switch 17. In the case where either a button disposed at an entrance or a button disposed in a cage is subjected to a predetermined operation, the power supply change-over switch 17 is switched to the side of the power supply part 40 thereby to bring the power supply part 40 into a usable state.

Description

  Embodiments described herein relate generally to an elevator system.

  2. Description of the Related Art Conventionally, there is an elevator system in which a standby power source (secondary battery or the like) is provided for driving an elevator and the elevator is driven by the standby power source when a commercial power source fails. There is also known an elevator system in which electric power is stored in a power storage device during a time zone such as nighttime and is discharged during a daytime time to drive an elevator (for example, Patent Document 1).

JP 2000-255918 A

  However, conventionally, the power of these standby power supplies and power storage devices has been used only for driving elevators, even when there is a margin, and cannot be used for building facilities other than elevators or for personal use. There wasn't.

  In view of the above circumstances, an object of the present invention is to provide an elevator system that can effectively use elevator standby power.

  In order to achieve the above object, an embodiment of the present invention accumulates electric power from an AC power source for driving an elevator or regenerative electric power at the time of driving an elevator, and in an emergency, a power storage unit serving as a backup power source for driving the elevator, A power supply unit serving as an interface for supplying the power stored in the power storage unit to another power facility, a changeover switch for switching whether to supply the power stored in the power storage unit to the power supply unit, A switching determination control unit that executes switching control of the switch. The switch determination control unit switches the changeover switch to the power supply unit side to make the power supply unit usable when a button installed in the hall or a button installed in the car is operated for a predetermined time.

The block diagram which shows the structure of the elevator system by embodiment. The flowchart which shows operation | movement of the elevator system by embodiment. Explanatory drawing which shows the attachment position of an electric power supply part and a light emission part. Explanatory drawing which shows the other attachment position of an electric power supply part and a light emission part. Explanatory drawing which shows the other attachment position of an electric power supply part and a light emission part. Explanatory drawing which shows the structure of an electric power supply part and a light emission part. The schematic block diagram of the elevator hall to which the elevator system by other embodiment was applied.

<< First Embodiment >>
FIG. 1 is a block diagram illustrating an embodiment of an elevator system.

  The illustrated elevator system 100 controls the movement of the car 4 and the counterweight 5 in a slidable manner by driving an electric motor 2 by a three-phase AC power source 1 and operating a hoisting machine 3. It is controlled by the device 10. The rotation state of the hoisting machine 3 is detected by the encoder 6, and the rotation detection signal is output to the elevator control device 10. Further, the car 4 is provided with a load sensor 7, and the load detection signal is output to the elevator control device 10.

  The elevator control device 10 includes a converter circuit 11, an inverter circuit 12, an inverter control unit 13, and a current detection unit 14 in terms of its functions. Further, the elevator control device 10 includes a power storage unit 15, a charge / discharge circuit 16, a power supply changeover switch 17, an elevator drive changeover switch 18, a switching determination control unit 19, a drive control unit 20, A group management control unit 21 and a DC / AC conversion unit 22 are provided.

  The converter circuit 11 once converts the three-phase alternating current supplied from the three-phase alternating current power supply 1 into direct current. The inverter circuit 12 converts the direct current output from the converter circuit 9 into a three-phase alternating current having a desired frequency and a desired voltage, and supplies the same to the electric motor 2. The inverter control unit 13 receives the current detection signal from the current detection unit 14, the rotation detection signal from the encoder 6, and the drive control signal from the drive control unit 20 to optimally control the inverter circuit 12. The current detection unit 14 monitors the output signal of the inverter circuit 12 and supplies the current detection signal to the inverter control unit 13.

The power storage unit 15 can be configured by a large-capacity storage battery with high storage efficiency such as an electric double-layer capacitor (EDLC). While the charging / discharging circuit 16 inputs the output voltage at the time of the regenerative operation of the converter circuit 11 and charges the power storage unit 15,
The charging / discharging circuit 16 has a function of charging the power storage unit 15 with power from the three-phase AC power source 1 that drives the elevator or regenerative power during elevator driving, and as a backup power source for driving the elevator in an emergency, and a power supply unit It has the function to discharge so that another electric power equipment can be utilized via 40.

  The power supply changeover switch 17 is a switch for switching to the power supply unit 40 side so that the power stored in the power storage unit 15 can be used by an external power facility in the event of a power failure or the like.

  The elevator drive changeover switch 18 is a switch that selectively switches whether the electric power of the three-phase AC power supply 1 is supplied to the elevator drive side or supplied to the power storage unit 15 side to be stored.

  The switching determination control unit 19 is a switching command from the hall control device 30, a load signal from the load sensor 7 of the car 4, an elevator drive command from the drive control unit 20, and an operating state of the other car from the group management control unit. Based on the signal, it is determined whether or not the power supply selector switch 17 is switched to the power supply unit 40 side.

  The drive control unit 20 outputs an elevator drive command to the inverter control unit 13 and the switching determination control unit 19.

  The group management control unit 21 inputs the driving state of other cars and executes group management of the elevator.

  The DC / AC converter 22 converts the DC power stored in the power storage unit 15 into AC power and supplies the AC power to the power supply unit 40. When a DC load is connected to the power supply unit 40, DC power is directly supplied to the power supply unit 40 without going through the DC / AC conversion unit 22.

  The DC / AC conversion unit 22 converts the DC power stored in the power storage unit 15 into AC power by switching the power supply changeover switch 17 to the power supply unit 40 side and supplies the AC power to the outlet serving as the power supply unit 40. To do.

The hall control device 30 registers a hall call when the hall push button is operated, and outputs a switching command to the elevator control device 10 when the hall push button is subjected to a predetermined operation for power switching. As shown in FIGS. 3 to 6, the switching power supply unit 40 can be configured by an elevator hall 51 or an outlet provided in the car. Moreover, as shown in FIG. 7, it can be comprised with the illuminating device 71, the ventilation fan 72, etc. which were provided in the ceiling etc. of the hall 51. As shown in FIG.

  As shown in FIGS. 3 to 6, the light emitting unit 41 is provided in the vicinity of the power supply unit 40, and lights up to notify that it is in a usable state when the outlet is in a usable state. Further, as shown in FIG. 6, for example, characters such as “power supply” are written on the surface, and the position of “power supply” can be notified.

  Next, the operation of one embodiment of the elevator system will be described with reference to the flowchart of FIG.

  When power is supplied from the three-phase AC power source 1 (YES in step S1), the switching determination control unit 19 monitors whether or not a predetermined operation for power switching is performed from the landing push button 43 at the landing (step S2). ). The predetermined switching operation is a special operation that only the administrator knows, such as operating a plurality of predetermined push buttons at the same time or inputting a number corresponding to the encryption from the push buttons. A dedicated button may be provided on the key box or the like. When the predetermined switching operation is not performed at the landing, the switching command for the power supply switching switch 17 is not output, and the normal elevator operation is executed (step S3). When the switching operation is performed, a switching command is output to the power supply selector switch 17 so that power is supplied from the power storage unit 15. As a result, the power supply selector switch 17 is switched to the power supply unit 40 side, and power can be supplied to other power facilities (steps S4 and S5). In this case, when the power supply unit 40 is an AC outlet, the DC power of the power storage unit 15 is converted into AC power and supplied via the DC / AC converter 22.

  On the other hand, when power is not supplied from the three-phase AC power source 1 due to a power failure or the like (step S1 NO), is the switching determination control unit 19 based on the load signal from the load sensor 7 to leave a person in the car? It is determined whether or not (step S6). If it remains, the elevator is driven using the stored power in the power storage unit 15 to move to the nearest floor to stop the car and open the door (step S7). While the door opening button is pressed, the door opening is continued (steps S8 and S9). If no person is left in the car, the process proceeds to step S4, the power supply changeover switch 17 is switched to the power supply unit 40 side, and power supply to other power facilities becomes possible (step S5). ).

<Specific Installation Position of Power Supply Unit 40>
3 shows an example in which the power supply unit 40 is provided on the hall operation panel 42 of the elevator hall 51, FIG. 4 shows an example in which the power supply unit 40 is provided on the hall operation panel 42 in the three-way frame 53 of the elevator hall 51, and FIG. The example which provided the supply part 40 in the elevator car operating panel 62 is shown. Normally, the power supply unit 40 cannot be used, but an authorized person such as an elevator administrator performs a special button operation from the landing push button 43 (or the car push button 63) to thereby provide the power supply unit. 40 can be enabled. When the power supply unit 40 becomes usable, the light-emitting unit 41 is lit to notify that the power can be supplied and the position of the power supply unit (outlet). In this case, as shown in FIG. 6, since the word “power” is displayed on the surface of the light emitting unit 41 provided in the vicinity of the power supply unit 40, the installation location of the power source can be changed even during a power failure. It can be easily understood.

  As described above, according to the embodiment, when a predetermined switching operation is executed from the landing at a normal time when power is supplied from the three-phase AC power source 1 to the motor 2, the power from the power storage unit 15 is Since it is supplied to the supply unit 40, it can be used as a standby power source by connecting a load to an outlet serving as the power supply unit 40. For this reason, the power storage unit 15 that has been conventionally used only as a backup power source for driving the elevator can be used as backup power to another power facility via an outlet, and the reserve power can be effectively used. Become.

<Another example of the power supply unit 40>
As shown in FIG. 7, as another example of the power supply unit 40, the power supply unit 40 is used as a backup for the lighting device 71 and the ventilation fan 72. In an emergency such as a power failure or an earthquake, the power supply to the building may be interrupted. Even in such an emergency, the landing control device 30 outputs a switching command to the switching determination control unit 19 by performing a predetermined operation on the landing push button 43 of the landing operating panel 42. In response to this, the switching determination control unit 19 switches the power supply changeover switch 17 to the power supply unit 40 side, thereby driving the lighting device 61 and the ventilation fan.

  Thus, the power storage unit 15 that has been conventionally used only as a backup power source for driving the elevator during an emergency such as a power failure or an earthquake can be used as backup power to the building equipment.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Three-phase alternating current power supply 2 ... Electric motor 3 ... Hoisting machine 4 ... Car 5 ... Counterweight 6 ... Encoder 7 ... Load sensor 10 ... Elevator control device 11 ... Converter circuit 12 ... Inverter circuit 13 ... Inverter control part 14 ... Current detection unit 15 ... Power storage unit 16 ... Charge / discharge circuit 17 ... Power supply changeover switch 18 ... Elevator drive changeover switch 19 ... Switch determination control unit 20 ... Drive control unit 21 ... Group management control unit 30 ... Place control device 40 DESCRIPTION OF SYMBOLS ... Electric power supply part 41 ... Light emission part 42 ... Platform operation panel 43 ... Platform push button 62 ... Car operation panel 63 ... Car push button 71 ... Illumination device 72 ... Ventilation fan 100 ... Elevator system

In order to achieve the above object, an embodiment of the present invention accumulates electric power from an AC power source for driving an elevator or regenerative electric power at the time of driving an elevator, and in an emergency, a power storage unit serving as a backup power source for driving the elevator, A power supply unit serving as an interface for supplying the power stored in the power storage unit to another power facility, a changeover switch for switching whether to supply the power stored in the power storage unit to the power supply unit, A switching determination control unit that executes switching control of the switch. The power supply unit is an outlet provided in the elevator hall or the car and electrically connected to other power facilities. The switch determination control unit switches the changeover switch to the power supply unit side to make the power supply unit usable when a button installed in the hall or a button installed in the car is operated for a predetermined time.

Claims (3)

A power storage unit that stores power from an AC power source that drives the elevator or regenerative power during elevator driving, and serves as a backup power source for driving the elevator in an emergency,
A power supply unit serving as an interface for supplying the power stored in the power storage unit to another power facility;
A changeover switch for switching whether to supply the power stored in the power storage unit to the power supply unit;
A switching determination control unit that executes switching control of the changeover switch;
With
The switch determination control unit switches the switch to the power supply unit side when the button installed in the hall or the button installed in the car is operated for a predetermined state, and the power supply unit can be used. An elevator system characterized by A light emitting unit is provided in the vicinity of the power supply unit,
The elevator system according to claim 1, wherein the light emitting unit is turned on when the power supply unit is ready for use.   The elevator system according to claim 1, wherein the power supply unit is an outlet provided in an elevator hall or a car and electrically connected to the other power equipment.

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