COMPRESSOR CONTROL SYSTEM AND CONTROL METHOD THEREOF

WIPO Patent Application WO/2024/041391

A1

The present application discloses a compressor control system in a refrigeration system and a control method. The refrigeration system comprises a compressor and an economizer, wherein the compressor comprises a sliding valve, and the economizer is provided with an inlet pipeline, a gas outlet pipeline and a liquid outlet pipeline. The compressor control system comprises: inlet pipeline sensors; gas outlet pipeline sensors; liquid outlet pipeline sensors; and a control device configured to: receive pressure parameters and temperature parameters of the inlet pipeline, the gas outlet pipeline and the liquid outlet pipeline; and control movement of the sliding valve on the basis of the pressure parameters and the temperature parameters, so as to adjust the position of the sliding valve. In the present application, the change in the actual internal volume ratio of the compressor is reflected by means of the change in the mass and density of a refrigerant discharged from an exhaust port of the compressor. The influence of economizer pipeline design and pressure drop is avoided, so that the calibration result of the internal volume ratio of the compressor is more accurate and reliable.

ZHU YU (CN)
JI SHICAI (CN)
MA FANZI (CN)
ZHANG FENGZHI (CN)

PCT/CN2023/112173

February 29, 2024

August 10, 2023

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YORK WUXI AIR CONDITIONING AND REFRIGERATION CO LTD (CN)
JOHNSON CONTROLS TYCO IP HOLDINGS LLP (US)

F04C28/12

CN115628216A	2023-01-20
CN112815560A	2021-05-18
CN113761690A	2021-12-07
CN104912800A	2015-09-16
CN113465105A	2021-10-01
CN216868860U	2022-07-01
US5927088A	1999-07-27

TUO YING LAW OFFICES (SHANGHAI) (CN)

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