Frequency converter special for air compressor and air compressor variable-frequency drive control system

A variable frequency drive and control system technology, applied in the control system, machine/engine, AC motor control, etc., can solve the problem of incompatibility of the frequency converter, and achieve the effect of reducing wiring, reducing product volume, and saving air compressor controllers.

Inactive Publication Date: 2014-11-12
SHENZHEN INVT ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the embodiment of the present application provides a dedicated frequency converter for air compressors and a variable frequency drive control system for air compressors, so as to avoid complicated parameter configuration process and incompatible frequency converters, and reduce the frequency conversion of air compressors. Control the wiring of the system, improve the system integration, and facilitate the debugging, installation and maintenance of the system. The technical scheme is as follows:

Method used

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  • Frequency converter special for air compressor and air compressor variable-frequency drive control system
  • Frequency converter special for air compressor and air compressor variable-frequency drive control system
  • Frequency converter special for air compressor and air compressor variable-frequency drive control system

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Embodiment 1

[0053] See figure 2, which shows a schematic structural diagram of the special frequency converter for air compressors provided by the present application. The special frequency converters for air compressors include: temperature detection circuit 21, pressure detection circuit 22, external fault detection interface 23, control circuit 24, input terminal 25 and output terminal 26. in:

[0054] The temperature detection circuit 21 is used to detect the temperature of the head of the air compressor.

[0055] In this embodiment, the temperature detection circuit 21 is connected to the temperature sensor PT100 installed on the head of the air compressor, and the PT100 converts the temperature signal into a current signal through a temperature transmitter, and then inputs it through the analog quantity of the air compressor dedicated frequency converter The terminal is sent to the temperature detection circuit 21, and the temperature detection circuit 21 detects and obtains a te...

Embodiment 2

[0088] In this embodiment, an air compressor variable frequency drive control system is shown, please refer to Figure 4 , which shows a schematic structural diagram of an air compressor variable frequency drive control system provided in the present application. The air compressor variable frequency drive control system at least includes: an air compressor dedicated frequency converter 41 and a fan driver 42 .

[0089] The frequency converter 41 dedicated to the air compressor is used to drive and control the host of the air compressor.

[0090] For the specific structure and related functions of the frequency converter 41 dedicated to air compressors, please refer to the frequency converter dedicated to air compressors shown in Embodiment 1, and details will not be repeated here.

[0091] The fan driver 42 is used to drive the fan of the air compressor.

[0092] See Figure 5 , which shows another schematic structural diagram of the air compressor variable frequency drive ...

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Abstract

The invention provides a frequency converter special for an air compressor and an air compressor variable-frequency drive control system. The frequency converter special for the air compressor comprises a temperature detection circuit, a pressure detection circuit, an external fault detection interface and a control circuit. The frequency converter special for the air compressor is provided with the temperature detection circuit, the pressure detection circuit and the external fault detection interface, and hardware support is provided for the frequency converter special for the air compressor to integrate functions of an air compressor controller. As the frequency converter special for the air compressor integrates the functions of the air compressor controller, a special air compressor controller is not required to communicate with the frequency converter, the complicated parameter configuration process and the condition that the frequency converter is incompatible are avoided, the special frequency converter controller is omitted, the wiring of the air compressor variable-frequency drive control system is reduced, the system integration degree is improved, and the system is convenient to debug, mount and maintain.

Description

technical field [0001] The present application relates to the technical field of frequency conversion air compressor control, in particular to a special frequency converter for an air compressor and a frequency conversion drive control system for an air compressor. Background technique [0002] As an important form of energy generation, air compressors are widely used in life and production, especially screw air compressors. The existing electric control drive schemes for screw air compressors mainly include the following types: [0003] (1) Use industrial frequency power to drive the air compressor host and oil cooling fan. However, when the main engine of the air compressor is driven by a power frequency power supply, the starting current is large, which has a large impact on the power grid, and when the gas consumption is small or no-load operation, the power consumption is large, resulting in waste of electric energy, and the gas pressure of the pipeline is always betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06H02P27/04
Inventor 张东花
Owner SHENZHEN INVT ELECTRIC
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