Adjusting method of cool-water screw precisioning air conditioner system

Abstract

A controlling method for the screw rod cooling precision air-conditioning system, which comprises the compressor which connect with the condensator, the drying filter, the evaporator, the output pipe and the return pipe for cold water of the condensator, and the PLC controller, the temperature transducer is set on the return pipe for check the temperature of the return-water, the output end of the temperature transducer connect with the input end of the PLC controller, the solenoid valve is in the compressor and the PLC controller and the PID program can achieve auto-regulation of the screw rod cooling precision air-conditioning system and control the temperature of the return water accurately of the central air-conditional system.

Description

technical field [0001] The invention relates to a chilled water supply system in the field of heating, ventilating and air-conditioning, in particular to a method for controlling a screw chilled water precision air-conditioning system using a PLC controller. Background technique [0002] At present, in the field of existing commercial air conditioners, most of the screw-cooled precision air conditioners are controlled by single-chip microcomputers. Since the single-chip microcomputer control system must be used in conjunction with peripheral electronic circuits, it is difficult to control the programmed single-chip microcomputer without changing the hardware. The program in the single-chip microcomputer is modified again, which makes the controller lose flexibility for the widely used screw-cooled precision air-conditioning system. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art, and provid...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of existing commercial air conditioners, most of the screw-cooled precision air conditioners are controlled by single-chip microcomputers. Since the single-chip microcomputer control system must be used in conjunction with peripheral electronic circuits, it is difficult to control the programmed single-chip microcomputer without changing the hardware. The program in the single-chip microcomputer is modified again. For the widely used screw-cooled precision air-conditioning system, the controller loses its flexibility.

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