Energy-saving control system of refrigeration compressor unit

Abstract

The invention discloses an energy-saving control system of a refrigeration compressor unit. The energy-saving control system comprises a refrigerating unit, a PLC (Programmable Logic Controller), a human-computer interface, a frequency changer and a suction pressure sensor, wherein the refrigerating unit comprises an invariable frequency compressor and a variable frequency compressor, and the frequency changer is used for controlling the rotating speed of the variable frequency compressor, so that suction pressure of the variable frequency compressor is controlled at a numerical value corresponding to the controlled environment temperature; the suction pressure sensor is used for obtaining the suction pressure of a suction opening of the variable frequency compressor in real time and conveying suction pressure data to the PLC, and the PLC is used for adjusting the frequency changer in real time; and the human-computer interface is used for displaying the numerical value and setting a suction pressure starting value.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment control, in particular to an energy-saving control system of a refrigeration compressor unit. Background technique [0002] With the development of the economy and society, the use of refrigeration equipment has become more and more extensive, and the huge demand for cooling capacity means huge energy consumption; while conventional energy has begun to show a state of exhaustion, energy conservation and emission reduction have become a major issue in production and life. A problem that needs to be paid attention to in various fields. As a high-energy-consuming equipment, refrigeration equipment will continue to rise with the extension of use time, the cost of power consumption, equipment damage and renewal, etc., resulting in an increase in the cost of use year by year. Energy waste. [0003] In order to achieve the purpose of energy saving and emission reduction in the refrig...

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Problems solved by technology

[0002] With the development of the economy and society, the use of refrigeration equipment has become more and more extensive, and the huge demand for cooling capacity means huge energy consumption; while conventional energy has begun to show a state of exhaustion, energy conservation and emission reduction have become a major issue in production and life. A problem that needs to be paid attention to in various fields. As a high-energy-consuming equipment, refrigeration equipment will continue to rise with the extension of use time, the cost of power consumption, equipment damage and renewal, etc., resulting in an increase in the cost of use year by year. Energy waste

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