Liquid-impact-proof control method and fluorine pump refrigeration system

By acquiring the saturation temperature and evaporation temperature of the evaporator in real time, calculating the evaporation superheat, and adjusting the condenser fan speed, the liquid slugging problem during the switch from liquid pump refrigeration cycle to compressor refrigeration cycle is solved, protecting the compressor and improving system stability and energy efficiency.

CN116086070BActive Publication Date: 2026-03-03GUANGDONG HIWAVE TECH
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Patent Information

Application Number
CN202310075317.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-02-01
Publication Date
2026-03-03
Estimated Expiration
2043-02-01

AI Technical Summary

Technical Problem

Liquid slugging can easily occur when switching from a liquid pump refrigeration cycle to a compressor refrigeration cycle, leading to compressor damage.

Method used

By acquiring the saturation temperature and evaporation temperature of the evaporator in real time, the evaporation superheat is calculated. The residence ratio and preset value are used to determine whether to adjust the speed of the condenser fan and take abnormal adjustment measures to prevent liquid slugging.

Benefits of technology

It effectively prevents liquid slugging when switching from the liquid pump refrigeration cycle to the compressor refrigeration cycle, protects the compressor, and improves system stability and energy efficiency.

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Abstract

The application relates to the air conditioning and refrigeration technical field, and particularly discloses a control method for preventing liquid impact and a fluorine pump refrigeration system. The method comprises the following steps: when in a liquid pump refrigeration cycle, the saturation temperature Tsaturation of an evaporator and the evaporation temperature Tevaporation are acquired in real time; and whether the rotating speed of a condensing fan is adjusted is judged according to the saturation temperature Tsaturation and the evaporation temperature Tevaporation. The application provides the control method for preventing liquid impact and the fluorine pump refrigeration system, and can effectively solve the problem that liquid impact is prone to occurring when the liquid pump refrigeration cycle is switched to a compressor refrigeration cycle.
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Citation Information

Patent Citations

  • Refrigeration air-cooling unit and control method thereof

    CN106225126A

  • Compressor and fluorine pump composite air conditioning system and control method thereof

    CN114923239A