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Compressor shutdown control method and device

A technology of control device and compressor, which is applied in the field of compressor control, can solve the problems of communication delay and failure to stop, achieve the effect of solving communication delay and improving real-time performance and safety

Active Publication Date: 2019-10-18
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a compressor stop control method and device, to at least solve the technical problem that the stop cannot be stopped due to communication delay caused by only transmitting the stop command through the serial communication line

Method used

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  • Compressor shutdown control method and device
  • Compressor shutdown control method and device
  • Compressor shutdown control method and device

Examples

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Embodiment 1

[0025] According to an embodiment of the present invention, an embodiment of a stop control device for a compressor is provided, figure 1 is a compressor stop control device according to an embodiment of the present invention, such as figure 1 As shown, the stop control device of the compressor includes:

[0026] The bearing controller micro-control unit 10 is used to generate a fault level signal when the compressor is abnormal and needs to be shut down; the bearing relay 12 is connected to the bearing controller micro-control unit 10 and is used to generate a shutdown signal according to the fault level signal; The signal conversion circuit 14 is used to connect with the bearing relay 12, and is used to convert the shutdown signal generated by the bearing relay 12, and output the converted shutdown signal to the inverter controller through the optical fiber 2, so that the inverter controller 3 Execute the shutdown operation.

[0027] Among them, the frequency converter con...

Embodiment 2

[0043] According to an embodiment of the present invention, a method embodiment of a compressor shutdown control method is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions , and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0044] figure 2 is a compressor shutdown control method according to an embodiment of the present invention, such as figure 2 As shown, the method includes the following steps:

[0045] Step S202, receiving the bearing status signal sent by the micro control unit of the bearing controller.

[0046] Wherein, the bearing state signal includes a hardware signal transmitted through a hardware channel. The compressor in this embodiment may be a magnetic levitation compressor.

[0047] Optionally, ...

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PUM

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Abstract

The invention discloses a shutdown control method and a shutdown control device of a compressor. The shutdown control device of the compressor comprises a bearing controller micro-control unit, a bearing relay and a signal conversion circuit. The bearing controller micro-control unit is used for generating a fault level signal when the compressor is abnormal and needs to be shut down. The bearingrelay is connected with the bearing controller micro-control unit and is used for generating a shut-off signal according to the fault level signal. The signal conversion circuit is connected with thebearing relay and is used for converting the shut-off signal generated by the bearing relay, and outputting the converted shut-off signal to a frequency converter controller through an optical fiber,so that the frequency converter controller executes the shutdown operation. The technical problem that the shutdown cannot be conducted during the communication delay caused by the transmission of a shutdown command only through a serial communication line is solved.

Description

technical field [0001] The present invention relates to the field of compressor control, in particular to a compressor stop control method and device. Background technique [0002] Compared with traditional compressors, the operation of magnetic levitation compressors has significant characteristics: before the motor runs, the shaft must first be suspended; during operation, the shaft has no physical contact with the mechanical bearing and can rotate at high speed; when stopping, the motor needs to be controlled first Stop before dropping the shaft onto the mechanical bearings. When the compressor is abnormal, the motor needs to be stopped in time, otherwise it will cause serious accidents such as shaft collision. The traditional abnormal shutdown method is: when the compressor is abnormal, the bearing controller sends a shutdown command to the frequency converter through the serial communication line. After the frequency converter receives the shutdown command, it controls...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
Inventor 张统世李燕张良浩
Owner GREE ELECTRIC APPLIANCES INC
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