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Method and device for saving energy of elevator

An elevator and power transmission technology, applied in the field of elevator energy saving, can solve problems such as wasting electric energy, and achieve the effect of saving electric energy and saving electric energy

Active Publication Date: 2010-11-17
SANYO ELEVATOR ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

figure 1 It is a structural schematic diagram of an elevator energy-saving system in the prior art, such as figure 1 As shown, when the microcomputer controller detects that the elevator is in an idle state and reaches a certain period of time, the public power grid stops supplying power to the lighting device in the car by controlling the lighting contactor in the car, so that the lighting in the car is automatically turned off, but At this time, all electrical components in the control cabinet are working normally, especially the frequency converter is always in working condition, thus wasting a lot of electric energy

Method used

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  • Method and device for saving energy of elevator

Examples

Experimental program
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Embodiment 1

[0027] figure 2 It is a schematic flowchart of an elevator energy-saving method according to Embodiment 1 of the present invention. Such as figure 2 As shown, the method includes:

[0028] S21. Obtain the running state information or idle state information of the elevator;

[0029] S22. Generate a first control signal according to the running state information or generate a second control signal according to the idle state information;

[0030] S23. Turn on the front-end contactor of the frequency converter of the elevator according to the first control signal, or disconnect the front-end contactor of the frequency converter according to the second control signal, wherein the front-end contactor of the frequency converter is used for turning on or Disconnect the power transmission from the public grid to the elevator frequency converter.

[0031] In this embodiment, the acquisition of the running state information or idle state information of the elevator includes: detec...

Embodiment 2

[0034] image 3 It is a structural schematic diagram of an elevator energy-saving device according to Embodiment 2 of the present invention. Such as image 3 As shown, the device includes:

[0035] Information obtaining module 31, is used for obtaining the running state information or idle state information of elevator;

[0036] The control module 32 is connected with the information acquisition module, and is used to connect the front-end contactor of the frequency converter according to the operation state information acquired by the information acquisition module 31, or to connect the idle time according to the information acquisition module 31. The status information disconnects the frequency converter front contactor, wherein the frequency converter front contactor is used to switch on or off the power transmission from the utility grid to the elevator frequency converter.

[0037] In this embodiment, the device may further include a state detection module for detectin...

Embodiment 3

[0040] Figure 4 It is a schematic flowchart of an elevator energy-saving method according to Embodiment 3 of the present invention. Such as Figure 4 As shown, the method includes:

[0041] S41. The microcomputer controller obtains the running state information or idle state information of the elevator, and generates a first control signal according to the running state information or generates a second control signal according to the idle state information;

[0042] S42. Turn on the lighting contactor in the car of the elevator according to the first control signal, or turn off the lighting contactor in the car according to the second control signal;

[0043] S43. Turn on the front-end contactor of the frequency converter of the elevator when the lighting contactor in the car is on, or turn off the front-end contactor of the frequency converter when the lighting contactor in the car is off. The inverter front-end contactor is used to connect or disconnect the power transm...

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Abstract

The invention discloses a method for saving energy of an elevator, which comprises the following steps of: acquiring operating condition information or idle condition information of an elevator; generating a first control signal according to the operating condition information, or generating a second control signal according to the idle condition information; and switching on a front contactor of a frequency converter of the elevator according to the first control signal, or switching off the front contactor of the frequency converter according to the second control signal, wherein the front contactor of the frequency converter is used for switching on or switching off power transmission from a public supply network to the frequency converter of the elevator. The invention also discloses another method for saving energy of the elevator and a device corresponding to the two methods. The methods and the device have the advantages of: automatically switching off power supply circuits of the frequency converter of the elevator when the elevator is in the idle condition, and automatically recovering power supply to the frequency converter when the elevator needs operating so as to greatly reduce energy consumption of the elevator and save a great amount of electric energy.

Description

technical field [0001] The invention relates to the technical field of elevator energy saving, in particular to an elevator energy saving method and device. Background technique [0002] In today's increasingly tense electric energy, how to effectively save electric energy has always been a problem that people pay more attention to. Taking residential elevators as an example, the actual running time of residential elevators does not exceed 10% every day, and more than 90% of the time is in a waiting state. figure 1 It is a structural schematic diagram of an elevator energy-saving system in the prior art, such as figure 1 As shown, when the microcomputer controller detects that the elevator is in an idle state and reaches a certain period of time, the public power grid stops supplying power to the lighting device in the car by controlling the lighting contactor in the car, so that the lighting in the car is automatically turned off, but At this time, all electrical componen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/00
Inventor 林绍雄刘宁芬
Owner SANYO ELEVATOR ZHUHAI
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