A screw type air-cooled chiller and operation method thereof

By designing screw-type air-cooled chiller units and intelligent operation methods, and using intelligent control systems to monitor and adjust the operating status of the equipment in real time, the problems of improving operation efficiency, reducing energy consumption and extending service life are solved, and the long-term stable operation and energy efficiency improvement of the equipment are achieved.

CN119737695APending Publication Date: 2025-04-01STATE GRID SIJI FEITIAN (LANZHOU) CLOUD TECH CO LTD
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Patent Information

Application Number
CN202411793582.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

How to improve the operating efficiency of screw air-cooled chiller units, reduce energy consumption, extend service life, and ensure long-term and stable operation of equipment.

Method used

A screw-type air-cooled chiller unit and operating method are designed, including the use of screw compressors, fin condensers, evaporators, throttling devices, environmentally friendly refrigerants, PLC controllers, sensors and inverters. Through an intelligent control system, the operating frequency and speed of the compressor and fan are monitored and adjusted in real time, the opening of the throttling device is optimized, the operating status of the equipment is dynamically adjusted, the evaporator and condenser are regularly cleaned, the fault status is timely monitored and automatic protection measures are implemented.

Benefits of technology

It realizes dynamic adjustment of equipment operating status according to actual load needs, improve energy efficiency, extend the service life of the equipment, ensure long-term and stable operation of the equipment, and reduces energy consumption and failure risks.

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Abstract

The present invention relates to the field of chillers, and discloses a screw air-cooled chiller and an operation method, including setting a target cold water temperature and environmental adaptation parameters, starting a compressor and a fan, and gradually increasing the operating power; adjusting the operating frequency of the compressor and the fan speed according to the actual load demand, monitoring the evaporation temperature and the condensation temperature in real time, and optimizing the throttling device opening; starting and stopping the compressor according to the load demand in a multi-compressor system, and reducing the fan speed and the compressor power at low ambient temperature; periodically defrosting or adjusting the fan speed when running at low load or at low ambient temperature, regularly cleaning the evaporator and condenser, and removing the accumulated scale; monitoring the fault state in real time through a sensor and an electronic control system, and executing automatic shutdown, load reduction or sending an alarm according to the fault level. The present invention has the advantage of ensuring the long-term stable operation of the equipment.
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