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Method for moving an elevator car to landing floor in case of event related to main electrical power supply of the elevator

A technology for elevator car and main power supply, applied in the field of elevators, can solve problems such as passenger discomfort

Active Publication Date: 2018-06-01
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A drawback of the prior art solutions is that in the event of a failure or blackout of the main power supply to the elevator, the elevator brakes are activated due to a power outage, which causes an uncomfortable deceleration for the passengers and also usually leaves the elevator car in the elevator's between floors
Sudden application of the elevator brakes may also cause slippage in the elevator sheaves

Method used

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  • Method for moving an elevator car to landing floor in case of event related to main electrical power supply of the elevator
  • Method for moving an elevator car to landing floor in case of event related to main electrical power supply of the elevator
  • Method for moving an elevator car to landing floor in case of event related to main electrical power supply of the elevator

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Embodiment Construction

[0040] figure 1An elevator 1000 according to an embodiment of the invention is shown schematically. The elevator 1000 may include an electric motor 155 for moving the elevator car 130 included in the elevator 1000 . Elevator car 130 may be mechanically coupled to motor 155, for example by hoist ropes 140, hydraulic means, or in the case of a linear motor in a more direct manner. The operation of the electric motor 155 may be controlled by an electric drive 105 such as a frequency converter or inverter.

[0041] Lifting rope 140 may comprise, for example, steel or carbon fiber. The term "hoisting rope" does not in any way limit the form of the element. For example, hoisting ropes 140 may be implemented as ropes 140, belts, or tracks in a ropeless or ropeless elevator.

[0042] The elevator 1000 may include an elevator control unit 1100 for controlling the operation of the elevator 1000 . The elevator control unit 1100 may be a separate device, or may be included in other c...

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Abstract

The present invention provides a method and an elevator for moving an elevator car (130) to a landing floor (160) in case of a predefined event related to a main electrical power supply (125) of an elevator (1000). The method comprises charging (320) energy from the main electrical power supply (125) into an external electrical energy storage (114) prior to detecting (330) the predefined event related to the main electrical power supply (125), controlling (340) an operation of an electric motor (155) for moving the elevator car (130) with an electrical drive (105) to decelerate the elevator car (130) and to produce regenerative electrical energy, selectively utilizing (350) said energy charged from the main electrical power supply (125) into the external electrical energy storage (114) andsaid produced regenerative electrical energy to maintain an elevator brake (116) in deactivated state.

Description

technical field [0001] The present invention generally relates to the technical field of elevators. The invention relates in particular to a method for moving an elevator car to a landing floor in case of a certain predefined event. Background technique [0002] A typical elevator utilizes electromechanical brakes that are operated such that electrical power is supplied to energize an electromagnet, which then deactivates the brake by applying a magnetic field force. The deactivation of the brake consumes electrical energy. This usually occurs when the elevator car of the elevator is moving or is about to be moved. When the electromechanical brake is activated, little or no energy is consumed, which occurs so that eg a spring element pushes the brake into the activated state, thus creating significant friction to slow down, stop or hold the elevator car in its position. [0003] The electrical energy required to operate an elevator is usually taken from the grid to which ...

Claims

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Application Information

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IPC IPC(8): B66B5/00B66B5/02H02J7/34
CPCB66B5/0006B66B5/027H02J7/345Y02B50/00B66B9/00B66B1/32B66B5/0031
Inventor A·卡泰南P·拉斯希那J·尼坎德A-P·拉赫蒂南P·林尼萨亚里P·阿霍宁
Owner KONE CORP
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