Refrigeration and heating cycle system

By combining multi-stage compression and multi-stage expansion with an intermediate heat exchange mechanism, the problems of heat exchange mismatch and system instability in traditional refrigeration and heating cycle systems are solved, achieving efficient energy utilization and adaptive output to meet multiple temperature requirements.

CN122237209APending Publication Date: 2026-06-19HANGZHOU ISAW TECH
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Patent Information

Application Number
CN202610632868.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional refrigeration and heating cycle systems suffer from problems such as heat exchange mismatch, large irreversible losses, low compression efficiency, system instability, and high equipment investment, making them difficult to adapt to complex and ever-changing application environments and various temperature requirements.

Method used

It adopts a multi-stage compression and multi-stage expansion combined intermediate heat exchange mechanism, and through flexible network topology design, it realizes the matching of refrigerant temperature change curve with external medium temperature. It uses heat release/heat absorption switchable module and four-way valve group to switch modes, optimizing energy exchange and output.

Benefits of technology

It significantly improves the energy efficiency ratio and operational adaptability of the refrigeration and heating cycle system, reduces irreversible temperature difference loss, and enables customized output of cooling and heating at various temperature levels to meet complex industrial and commercial needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a refrigeration and heating cycle system, comprising an external medium, first and second heat exchange mechanisms, and multiple compression mechanisms, multiple expansion mechanisms, several intermediate heat exchange mechanisms, and refrigerant pipelines between the first and second heat exchange mechanisms; the mechanisms are connected to form at least one circulation loop through the refrigerant pipelines. In the same circulation loop, the intermediate heat exchange mechanisms facilitate heat exchange between the refrigerant and the external medium; in two adjacent circulation loops, the refrigerants in both loops exchange heat through the intermediate heat exchange mechanisms and simultaneously exchange heat with the external medium. Advantages: Improves the energy efficiency ratio and operational adaptability of the refrigeration and heating cycle system, breaking the bottleneck of mismatch between constant evaporation / condensation temperature and variable temperature external medium in traditional single-stage cycles; enables seamless switching between refrigeration, heating, and combined cooling / heating modes under a single hardware architecture, achieving customized output of cooling and heating at various temperature levels to meet industrial and commercial needs.
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