一种双温区冷库制冷系统及其控制方法

By using a dual-temperature zone cold storage refrigeration system with refrigerant flow distribution and automatic compressor switching, the problems of limited functionality and high defrosting energy consumption in small and medium-sized cold storage facilities have been solved. This has resulted in efficient and stable refrigeration, expanded the functionality of cold storage facilities, and reduced energy consumption.

CN122408359APending Publication Date: 2026-07-17GUANGDONG MODERN AGRI EQUIP RES INST

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG MODERN AGRI EQUIP RES INST
Filing Date
2026-06-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Small and medium-sized cold storage refrigeration systems have limited functionality, high defrosting energy consumption, and the risk of material damage due to single-unit failures, especially in agricultural production areas where there is a lack of pre-cooling and refrigeration functions and efficient waste heat utilization technology.

Method used

The cold storage adopts a dual-temperature zone refrigeration system. The refrigerant flow is adjusted through the refrigerant flow distribution module to achieve on-demand distribution of cooling capacity. When one compressor fails, the other compressor will automatically switch to service. The gaseous refrigerant at the outlet of the high-temperature zone heat exchanger is used for defrosting.

Benefits of technology

It improves the refrigeration capacity of cold storage, expands the functions of cold storage, reduces defrosting energy consumption, and ensures the stability and efficient operation of the refrigeration system.

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Abstract

本发明涉及制冷系统技术领域,具体公开一种双温区冷库制冷系统及其控制方法,根据现有逆卡诺循环的制冷原理,结合两个压缩制冷循环,形成一套可以实现同时冷藏和冷冻或者预冷和冷藏的双温区冷库制冷系统;通过冷媒流量分配模块分配制冷剂流量,将制冷量按需分配至冷库的不同温区中,扩大了冷库制冷能力的调节范围;若高温与低温同时运行时,将高温区换热器出口具有过热度的气态制冷剂送至低温区结霜换热器中进行融霜,降低了低温区换热器的融霜能耗。
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