JP5944637B2 - elevator - Google Patents

Description

  Embodiments described herein relate generally to an elevator including a battery for assisting power supply.

  The elevator is equipped with a hoisting machine that raises and lowers the car in the hoistway by the power of the electric motor supplied with electric power, and an electric device to which electric power is supplied such as a lighting device and an air conditioner in the car It also has. For this reason, this elevator is provided with a power supply device for supplying power. For example, as the power supply device, a power source for power that supplies power to the motor of the hoisting machine is prepared. In some of these conventional elevators, electric power from a power source is supplied to an electric motor of a hoisting machine via an inverter. For example, in the elevator described in Patent Document 1, when power cannot be supplied to the motor of the hoist due to a power failure of the power supply, the battery power is supplied only to the lighting device in the car. . Patent Document 2 discloses a technique for lighting a lighting device in a hoistway without using battery power during a power failure of a power source.

JP 2005-324903 A JP 2005-145702 A

  By the way, some elevators are equipped with a wide variety of electric devices that are supplied with power from a single-phase power source. Therefore, the single-phase power supply needs to have a capacity that matches all the required power amounts in order to cover the power of various electric devices. However, since the single-phase power supply causes an increase in size and cost due to an increase in capacity, the capacity limit is naturally determined according to the installable space and cost. On the other hand, not all electric devices are always in use. For this reason, the actual total power requirement is less than the sum of the power requirements of all electrical devices. Therefore, in an elevator, it is possible to supply power to various electric devices without matching the capacity of the single-phase power supply to the sum of the required power amounts of all the electric devices. However, if the power consumption of electrical equipment increases rapidly, such as when the number of electrical equipment used at the same time increases, the amount of power supplied from the single-phase power supply must be increased. The burden may increase.

  On the other hand, a conventional elevator has a battery as a backup power source for power in the event of an emergency such as a power outage, and there are still many scenes where the electrical energy stored in the battery can be used. There is room to think.

  The problem to be solved by the present invention is to provide an elevator that reduces the amount of power supplied from a single-phase power supply and reduces the burden on the single-phase power supply by making good use of the electric energy of the battery.

The elevator of the embodiment includes a hoisting machine, a power source for power, a battery, a single-phase power source, an electrical device, and a converter. The hoisting machine raises and lowers the car in the hoistway with the power of the electric motor. The power source for power supplies electric power to the electric motor via an inverter. The battery stores electric energy via an inverter during the regenerative operation of the hoisting machine. The single-phase power source is different from the power source for power. Electrical equipment is powered by a single-phase power source. The converter supplies electric power received from the single-phase power source and the battery to an electric device. And the electric power of a battery is supplied to an electric equipment together with a single phase power supply. The power supply ratio between the single-phase power source and the battery is changed according to the remaining amount of electricity stored in the battery, and is changed according to the remaining amount of electricity when the power consumption of the air conditioner exceeds a predetermined amount. Regardless, increase the power supply ratio .

FIG. 1 is a diagram illustrating a power supply configuration of the elevator according to the first embodiment. FIG. 2 is a diagram illustrating a power supply configuration of the elevator according to the second embodiment. FIG. 3 is a diagram illustrating a power supply configuration of the elevator according to the third embodiment. FIG. 4 is a diagram illustrating a power supply configuration of the elevator according to the fourth embodiment. FIG. 5 is a diagram illustrating a power supply configuration of the elevator according to the fifth embodiment.

  Below, an embodiment of an elevator is described in detail based on a drawing.

[Embodiment 1]
Embodiment 1 of an elevator will be described with reference to FIG. This elevator is equipped with a hoisting machine that raises and lowers a car in the hoistway. And as this elevator, the one where the hoisting machine is installed in the machine room above the hoistway and the one without the machine room where the hoisting machine is installed in the hoistway are known. FIG. 1 shows a power supply configuration of an electric device such as a hoisting machine that needs to be supplied with electric power. The code | symbol 1 of FIG. 1 has shown the power supply structure of the elevator of this embodiment. Reference numeral 100 denotes a hoisting machine including an electric motor 101 that is one of the electric devices of the elevator according to the present embodiment, and reference numeral 110 denotes other than the electric motor 101 of the hoisting machine 100 in the elevator according to the present embodiment. Shows the electrical equipment. Hereinafter, when it is simply referred to as an electric device, it refers to a device other than the electric motor 101 of the hoisting machine 100.

  The hoisting machine 100 lifts and lowers a car connected via a pulley, a main rope, and the like with the power of the electric motor 101. Therefore, in order to operate the hoisting machine 100, it is necessary to supply electric power to the electric motor 101 to generate power. In the elevator according to the present embodiment, a power source 10 for power is prepared as a power source dedicated to power for the elevator. The power source 10 for power is connected to an electric motor 101 via an inverter 11. The hoisting machine 100 operates when electric power is supplied from the power source 10 to the electric motor 101 via the inverter 11 to raise and lower the car.

  The electric device 110 is a device used in addition to the power of the elevator, and is, for example, a lighting device in a car, a lighting device in a hoistway, an air conditioner that adjusts air in the car, or the like. In the elevator according to the present embodiment, a single-phase power source 20 for supplying electric power to these various electric devices 110 is provided. This single-phase power supply 20 is connected to various electric devices 110 via a converter 21.

  In the power supply configuration 1, the inverter 11 and the converter 21 constitute a power supply drive system. The inverter 11 and converter 21 are controlled by the control device 30 of the power supply drive system. The control device 30 controls power feeding from the power source 10 via the inverter 11 to the electric motor 101, and also controls power feeding from the single-phase power source 20 via the converter 21 to various electrical devices 110.

  Here, the hoisting machine 100 can perform the regenerative operation separately from the driving operation for raising and lowering the car. The hoisting machine 100 generates electric power by driving the electric motor 101 as a generator during the regenerative operation. The elevator 41 is provided with a battery 41, and the control device 30 causes the battery 41 to store electric energy obtained by power generation during the regenerative operation via the inverter 11.

  The battery 41 is also connected to the converter 21, and can supply power to various electric devices 110 via the converter 21. Power supply from the battery 41 to the various electrical devices 110 is realized by the control of the converter 21 by the control device 30.

  In the elevator according to the present embodiment, the control device 30 controls the converter 21 when the power supply from the single-phase power source 20 to the various electrical devices 110 is normal, and the single-phase power source 20 and the battery 41 are used in combination. Power is supplied to the electric device 110. In other words, this elevator is configured so that power is supplied from the battery 41 to the electric device 110 even in the event of an emergency such as a power failure. Therefore, in the power supply configuration 1 of the present embodiment, a power supply path from the single-phase power supply 20 to the electric device 110 and a power supply path from the battery 41 to the electric device 110 are provided.

  In this elevator, when the single-phase power supply 20 and the battery 41 are used together in this normal state, the battery 41 can cover a part of the required electric energy of the electric device 110. The amount of power supply can be reduced, and the burden on the single-phase power supply 20 can be reduced. Therefore, this elevator is also useful for energy saving.

  Here, the control device 30 may change the power supply ratio between the single-phase power supply 20 and the battery 41 in accordance with the remaining power storage amount of the battery 41. For example, it is preferable that the control device 30 decrease the power supply ratio of the battery 41 and increase the power supply ratio of the single-phase power supply 20 as the remaining power storage amount of the battery 41 decreases. As a result, the elevator can prevent a shortage of the amount of electricity stored in the battery 41. Therefore, even if power cannot be supplied from the single-phase power source 20 due to, for example, a power failure, power is supplied from the battery 41 to the electric device 110. can do. On the other hand, this elevator can also avoid a situation in which the battery 41 is fully charged and the regenerative power generated by the regenerative operation of the hoist 100 cannot charge the battery 41 or becomes overcharged. Note that the power supply ratio of the battery 41 may be reduced to zero. When the power supply ratio is configured to be 0, a power supply switching device 51 according to a second embodiment described later is provided.

  By the way, the battery 41 can be used as a backup power source of the power source 10 in an emergency where power cannot be supplied from the power source 10 due to a power failure or the like. In this case, it is not preferable that the remaining power storage amount of the battery 41 is equal to or less than a predetermined amount (for example, a power storage amount that cannot be used as a backup power source). Therefore, it is preferable to adjust the power consumption amount of the battery 41 at the normal time so that the remaining power storage amount larger than the predetermined amount is maintained in preparation for an emergency. For example, in this case, the control device 30 stops using the single-phase power source 20 and the battery 41 together (that is, the power of the battery 41 described above) when the remaining power storage amount of the battery 41 becomes a predetermined amount or less during normal operation. The supply ratio may be set to 0) to switch to power supply from the single-phase power supply 20. As a result, a situation in which the amount of power supplied from the battery 41 is insufficient in an emergency can be avoided, so that the battery 41 can be reliably used as a backup power source for the power supply 10 in an emergency. In addition, in order to obtain the same effect as this, the control device 30 includes a condition that the battery 41 is in a fully charged state or a sufficient remaining charged amount equivalent to full charge. The phase power supply 20 and the battery 41 may be used in combination. The sufficient amount of remaining power corresponding to the full charge is a value that can be set depending on, for example, how much power is required as a backup power source in an emergency.

[Embodiment 2]
A second embodiment of the elevator will be described with reference to FIG. This elevator is obtained by adding the following configuration to the elevator according to the first embodiment described above.

  In the first embodiment, electric power is supplied to various electrical devices 110 using the single-phase power supply 20 and the battery 41 in combination at the normal time. In the power supply configuration 2 of the present embodiment, in an emergency where power supply from the single-phase power supply 20 becomes impossible due to a power failure or the like, the power supply from the single-phase power supply 20 to the electric device 110 is interrupted, and the battery 41 Switch to power supply to the electric equipment 110. Therefore, the elevator according to the present embodiment includes a power supply switching device that switches the power supply path so that either the single-phase power supply 20 or the battery 41 supplies power to the electric device 110 in the elevator according to the first embodiment. 51 is provided. Furthermore, the elevator according to the present embodiment is also provided with a power supply abnormality detection device 52 that detects a state where the single-phase power supply 20 cannot supply power.

  The power supply switching device 51 switches between a power supply path from the single-phase power supply 20 to the electric device 110 and a power supply path from the battery 41 to the electric device 110. The power supply switching device 51 realizes switching of the power supply path by controlling the converter 21. In this example, the control device 30 and the power supply switching device 51 are provided separately, but the power supply switching device 51 may be prepared as one function of the control device 30.

  The power supply abnormality detection device 52 detects a power supply state from the single-phase power supply 20, and may be determined from, for example, an energization state of a power cable connecting the single-phase power supply 20 and the converter 21. The power supply abnormality detection device 52 transmits the detection signal to the power supply switching device 51. When the power switching device 51 is provided as a function of the control device 30, the detection signal is transmitted to the control device 30.

  When the power supply switching device 51 receives the detection signal, the single-phase power supply 20 and the converter 21 are in an energized state, and power can be supplied from the single-phase power supply 20 to the electrical device 110. For this reason, the power supply switching device 51 at this time passes the processing to the control device 30 without switching the power supply path. At that time, the control device 30 supplies power to the various electrical devices 110 using the single-phase power source 20 and the battery 41 in the same manner as in the first embodiment. When the power supply abnormality detection device 52 is connected to the control device 30, the control device 30 receives the detection signal from the power supply abnormality detection device 52 and determines that it is in the energized state. Power is supplied to the various electric devices 110 by using together with 41.

  On the other hand, the power supply switching device 51 is single-phased when it cannot receive the detection signal for the energized state from the power supply abnormality detecting device 52 or when it receives the detection signal for not being in the energized state from the power supply abnormality detecting device 52. Since the power supply from the power source 20 is an emergency, the power supply from the single-phase power source 20 to the electric device 110 is cut off, and the power supply from the battery 41 to the electric device 110 is switched.

  As described above, the elevator according to the present embodiment uses the single-phase power source 20 and the battery 41 together as in the first embodiment as long as power can be supplied from the single-phase power source 20 when power is supplied to the electric device 110. If the power supply from the single-phase power supply 20 is impossible, the battery 41 is supplied only. Therefore, this elevator not only obtains the same effects as in the first embodiment, but also uses the battery 41 as a backup power source for the single-phase power source 20 in an emergency when power supply from the single-phase power source 20 becomes impossible. The electric device 110 can be operated. In this emergency, a part selected from the various electric devices 110 may be an object to be supplied with power from the battery 41.

  By the way, in this example, it is assumed that the power supply cable connecting the single-phase power supply 20 and the converter 21 is energized to detect the power supply impossible state of the single-phase power supply 20, but for example, the current value of the power supply cable is The power supply switching device 51 may be configured to detect that the power supply abnormality detection device 52 detects that power supply is not possible when the current value is lower than normal.

  Moreover, although the power supply impossible state of the single-phase power supply 20 may occur due to, for example, secular change of the single-phase power supply 20, it is more likely to occur due to a power failure. For this reason, this power failure detection device 52 may be replaced with a power failure detection device capable of detecting that a power failure has occurred in the elevator of this embodiment. The power failure detection device may determine a power failure based on the power supply state of the power cable similar to the power failure detection device 52, or may determine a power failure based on the state of the earth leakage breaker. . Furthermore, the power failure affects not only the power supply from the single-phase power supply 20 but also the power supply from the power supply 10 for power. Therefore, the power failure detection device may detect a power supply state from the power source 10 for power.

[Embodiment 3]
A third embodiment of the elevator will be described with reference to FIG. This elevator is obtained by adding the following configuration to the elevator according to the first embodiment described above.

  When the elevator is not used, if the single-phase power supply 20 and the battery 41 are used together to supply power to the electrical device 110, not only the power consumption of the single-phase power supply 20 increases, but also the hoisting machine 100 is regenerated. Since the operation cannot be performed, the remaining power storage amount of the battery 41 is decreasing. For example, when the battery 41 is fully charged, power is also supplied from the single-phase power supply 20 even though the reduction of the remaining power storage amount of the battery 41 can be allowed. The amount will increase. On the other hand, when the remaining power storage amount of the battery 41 is small, the power of the battery 41 is consumed even though the battery 41 cannot be charged.

  Therefore, in the power supply configuration 3 of the present embodiment, when the elevator is not used for a predetermined time, power is supplied to the electrical device 110 from either the single-phase power supply 20 or the battery 41. The predetermined time may be set to, for example, a time until lighting in the car is turned off after the car is stopped.

  The elevator according to the present embodiment is provided with the same power supply switching device 51 as in the second embodiment in the elevator according to the first embodiment.

  Here, whether the elevator is not used can be determined based on whether the call is not registered after the car stops. Therefore, in the elevator according to the present embodiment, when the call is not registered for a predetermined time after the stop of the car, the electric device 110 is supplied with power from either the single-phase power supply 20 or the battery 41. Do.

  The elevator performs call registration by depressing a call registration button in the hall or the car, and moves the car up and down. For this reason, the elevator is provided with a call registration detection device 53 that detects pressing of the call registration button. The control device 30 receives the detection signal of the call registration detection device 53, performs call registration, and drives the hoisting machine 100. When the call registration detection device 53 is connected, the power supply switching device 51 determines that the call registration is not performed for the predetermined time unless the detection signal of the call registration detection device 53 is received for the predetermined time. Further, the power supply switching device 51 determines that the call registration has not been performed for a predetermined time if the control device 30 grasps that the detection signal of the call registration detection device 53 has not been received for a predetermined time. Therefore, when the detection signal of the call registration detection device 53 is not received for a predetermined time after the car stops, the power supply switching device 51 determines that the call is not registered for a predetermined time after the car stops. I do.

  When power is supplied from only the single-phase power supply 20 to the electric device 110, the power of the battery 41 is not consumed, so the burden is reduced. Therefore, the power supply switching device 51, when the call is not registered for a predetermined time after the stop of the car, for example, if the remaining power storage amount of the battery 41 is less than the predetermined amount, the power supply path from the battery 41 to the electrical device 110 Is switched to power supply from the single-phase power supply 20 to the electric device 110. The predetermined amount may be set, for example, to the amount of power stored according to the amount of power supplied from the battery 41 required in an emergency. Thereafter, in this elevator, when the call is registered, the single-phase power supply 20 and the battery 41 are used in combination to supply power to the electrical device 110. Therefore, in this elevator, not only the same effect as that of the first embodiment is obtained, but also when normal, the electric power is supplied from the battery 41 to the electric device 110 only when responding to call registration. The burden is reduced.

  On the other hand, when power is supplied from only the battery 41 to the electric device 110, the power of the battery 41 is consumed, but the power from the single-phase power supply 20 is not consumed. Therefore, the power supply switching device 51 can be used when, for example, the remaining charge amount of the battery 41 is equal to or greater than the above predetermined amount or the battery 41 is fully charged or equivalent when the call is not registered for a predetermined time after the car is stopped. If the amount of electricity is stored, the power supply from the single-phase power supply 20 to the electrical device 110 is cut off, and the power supply from the battery 41 to the electrical device 110 is switched. Therefore, in this elevator, not only the same effects as in the first embodiment can be obtained, but also the power consumption from the single-phase power supply 20 can be suppressed. Even in this elevator, when the call is registered after that, the single-phase power source 20 and the battery 41 are used in combination to supply power to the electric device 110.

  The configuration of the present embodiment may be applied to the above-described second embodiment, whereby the same effects as those of the second embodiment can be obtained.

[Embodiment 4]
Embodiment 4 of an elevator will be described with reference to FIG. This elevator is obtained by adding the following configuration to the elevator according to the first embodiment described above.

  In the elevator, the control device 30 performs a control operation when a power failure or an earthquake occurs. Further, the elevator may be controlled by a remote control from a control device of a so-called control center or an operator. In the elevator according to the present embodiment, during such a control operation, the power supply from the single-phase power supply 20 to the electric device 110 is cut off, and the electric power supply from the battery 41 to the electric device 110 is switched. Therefore, the elevator according to the present embodiment is provided with the same power source switching device 51 as in the second and third embodiments in the elevator according to the first embodiment, and a control operation detection device 54 that detects whether or not the control operation is being performed. Provide.

  The control operation detection device 54 can detect, for example, the start and stop of the control operation. The control operation detection device 54 may be provided as a function of the control device 30 that performs control operation control, and receives information from the control device 30 to determine the control operation control state. Also good.

  Control operation is performed when an earthquake or power outage occurs as described above. For this reason, at the time of control operation, there is a possibility that power supply from the single-phase power supply 20 may be disabled due to, for example, disconnection of wiring in a building accompanying a earthquake or a power failure. However, in the power supply configuration 4 of the present embodiment, the power supply switching device 51 that has detected that the control operation is in progress cuts off the power supply from the single-phase power supply 20 to the electric device 110 and changes from the battery 41 to the electric device 110. Supply power. Therefore, in the elevator according to the present embodiment, not only the same effects as those of the first embodiment can be obtained, but also the interruption of power supply to the electric device 110 during the control operation can be prevented.

  The configuration of the present embodiment may be applied to the above-described second and third embodiments, whereby the same effects as those of the second and third embodiments can be obtained.

[Embodiment 5]
An elevator embodiment 5 will be described with reference to FIG. This elevator is obtained by adding the following configuration to the elevator according to the first embodiment described above.

  The elevator according to the first embodiment supplies power to the electric device 110 using the single-phase power source 20 and the battery 41 in combination at the normal time. For this reason, in this elevator, there is a possibility that the single-phase power supply 20 has a smaller capacity than an elevator that does not use the single-phase power supply 20 and the battery 41 in normal operation.

  In addition, as described above, as the electric device 110, there is a device that consumes less power, such as a lighting device in a car, and the power consumption is larger than a lighting device such as an air conditioner in a car. There are also many things. And the power consumption of an air conditioner may increase rapidly, for example with a raise of external temperature.

  Here, as described in the first embodiment, when the remaining power storage amount of the battery 41 is decreasing, the power consumption of the battery 41 can be suppressed or eliminated by increasing the power supply amount from the single-phase power supply 20. However, when the power consumption of the air conditioner increases rapidly under this situation, the capacity of the single-phase power supply 20 that has been reduced in size is exceeded, and it is treated as an emergency when power supply from the single-phase power supply 20 becomes impossible. There is a fear.

  Therefore, the power supply configuration 5 of the present embodiment performs power supply control in combination with the battery 41 according to the operating state of the air conditioner in the elevator of the first embodiment.

  When the power consumption of the air conditioner has not increased rapidly (for example, when the power consumption is equal to or less than a predetermined amount), power is supplied to the electrical device 110 by using the single-phase power source 20 and the battery 41 in the first embodiment. Do. At that time, the power supply ratio between the single-phase power source 20 and the battery 41 described in the first embodiment is changed as appropriate. The predetermined amount may be determined based on the capacity of the single-phase power supply 20, and may be set to, for example, the power consumption of the air conditioner in which the single-phase power supply 20 does not exceed the capacity due to power supply alone.

  On the other hand, when the power consumption of the air conditioner increases rapidly (when the power consumption exceeds a predetermined amount), even if the power supply ratio of the battery 41 is set to 0, the single-phase power supply 20 and the battery 41 is used together to supply power to the electric device 110. Further, in the power supply configuration 5, when the power consumption of the air conditioner increases rapidly in the elevator according to the first embodiment, even if the power supply ratio of the battery 41 is set to be low, the power supply ratio is simply increased. Electric power is supplied to the electric device 110 by using the phase power supply 20 and the battery 41 in combination.

  Therefore, in the elevator of this embodiment, the power consumption is grasped in order to know the operating state of the air conditioner. The power consumption of the air conditioner can be determined from the set temperature of the air conditioner, the air flow rate, and the like, and can be grasped by the control device (hereinafter referred to as “air conditioning control device”) 55 of the air conditioner. The air conditioning control device 55 is provided as long as it has an air conditioner regardless of the elevator of the present embodiment. From this, in the elevator of this embodiment, the control device 30 performs the combined control of the single-phase power source 20 and the battery 41 by using the power consumption of the air conditioner grasped by the air conditioning control device 55. .

  In the elevator according to the present embodiment, not only the same effect as in the first embodiment is obtained, but also the capacity of the single-phase power supply 20 is prevented when the power consumption of the air conditioner increases rapidly. In this case, the amount of power supplied from the single-phase power supply 20 can be reduced and the burden on the single-phase power supply 20 can be reduced.

  As mentioned above, although several embodiment regarding this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. This embodiment is included in the scope and gist of the invention, and is also included in the invention described in the scope of claims and its equivalent scope.

1, 2, 3, 4, 5 Power source configuration 10 Power source 11 Inverter 20 Single-phase power source 21 Converter 30 Control device 41 Battery 51 Power source switching device 52 Power source abnormality detection device 53 Call registration detection device 54 Control operation detection device 55 Air conditioning control Equipment 100 Hoisting machine 101 Electric motor 110 Electric equipment

Claims (5)

A hoisting machine that raises and lowers a car in the hoistway with the power of the electric motor, a power source for supplying electric power to the electric motor via an inverter, and electric energy via the inverter during the regenerative operation of the hoisting machine , A single-phase power supply different from the power supply for power, an electric device supplied with electric power from the single-phase power supply, and an electric device supplied with electric power received from the single-phase power supply and the battery comprising a converter that, the, before Symbol electrical equipment, in combination with the single-phase power supplies power of the battery, power supply ratio between the front Kitansho supply and said battery, said battery An elevator that is changed according to the remaining amount of electricity stored, and that increases the power supply ratio regardless of the change according to the remaining amount of electricity when the power consumption of the air conditioner exceeds a predetermined amount . A power supply abnormality detection device that detects an inability to supply power to the single-phase power supply; and a power supply switching device that switches a power supply path so that one of the single-phase power supply and the battery supplies power to the electrical device; the provided, when the power supply impossible state of the single-phase power supply is detected by the pre-Symbol power failure detector, cut off the power supply to the electrical device from the single-phase power supply, electric power to the electrical device from said battery The elevator according to claim 1, wherein the elevator is supplied. If the either of the single-phase power source and the battery is provided with a power switching device for switching a power supply path to supply power to the electric device, after the pre-stop Symbol cab, not a predetermined time call registration, The power supply from the single-phase power source to the electric device is cut off to supply power from the battery to the electric device, or the electric power supply path from the battery to the electric device is cut off from the single-phase power source. The elevator according to claim 1, wherein electric power is supplied to the electric device. Wherein one of the single-phase power source and the battery is provided with a power switching device for switching a power supply path to supply power to the electric device, when the tube system operation, from the single-phase power to the electrical device The elevator according to claim 1, wherein power supply is cut off and power is supplied from the battery to the electric device.   2. The elevator according to claim 1, wherein power supply control is performed in combination with the battery in accordance with an operating state of an air conditioner as the electric device that performs air conditioning in the car.

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