一种可回收膨胀功的制冷系统

By coupling the expansion piston of the regenerative refrigeration unit and the compression piston of the compression refrigeration unit in the JT throttling refrigerator, the recovery of expansion work and power supply are realized, solving the problems of low system integration and low energy utilization efficiency, and meeting the requirements of ultra-low temperature refrigeration.

CN122015318BActive Publication Date: 2026-07-17PIEDMONT MEDSYST ZHUHAI CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PIEDMONT MEDSYST ZHUHAI CO LTD
Filing Date
2026-04-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing JT throttling refrigeration system has problems such as low system integration and low energy utilization efficiency, and fails to effectively recover the expansion work of the regenerative refrigeration unit to drive the JT compressor.

Method used

The expansion piston of the regenerative refrigeration unit is coupled with the compression piston of the compression refrigeration unit. The expansion work of the regenerative refrigeration unit is converted into the power of the compression refrigeration unit through a phase-coordinated control system. Combined with the heat absorber, the refrigerant in the heat exchanger of the precooling section is precooled, thus realizing the integrated coupling of precooling and power supply.

Benefits of technology

It improves the energy utilization efficiency and integration of the refrigeration system, reduces the input of external energy, meets the requirements of ultra-low temperature refrigeration, and can operate stably for a long time in low temperature environments.

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Abstract

本发明公开了一种可回收膨胀功的制冷系统,包括压缩式制冷单元和回热式制冷单元:压缩式制冷单元包括压缩机、高压气体管路、预冷段换热器、膨胀装置、冷端换热器和低压气体管路,压缩机包括压缩腔A和在压缩腔A内滑动的压缩活塞;回热式制冷单元包括压力波发生器、放热器、回热器、吸热器和压力波传输管,吸热器作为冷头对预冷段换热器内的制冷剂进行预冷,压力波传输管内设有可滑动的膨胀活塞;压缩式制冷单元的压缩活塞和回热式制冷单元的膨胀活塞耦合为一体在压缩腔A内滑动以压缩压缩腔A内的制冷剂,将回热式制冷单元的膨胀功转化为压缩式制冷单元的压缩动力,减少制冷系统的外部能源输入,提高能量利用效率。
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