Inventor
QIU YIFAN
US6 patents
Patents
6 patentsUS12055143B2Aug 6, 2024
Screw compressor with adjustable passage
CARRIER CORP7 citations77
US11898561B2Feb 13, 2024
Direct drive refrigerant screw compressor with refrigerant lubricated rotors
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US10288070B2May 14, 2019
Screw compressor with oil shutoff and method
CARRIER CORP3 citations71
US11959484B2Apr 16, 2024
Direct drive refrigerant screw compressor with refrigerant lubricated bearings
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US12385491B2Aug 12, 2025
Direct drive refrigerant screw compressor with refrigerant lubricated rotors
CARRIER CORP0 citations61
US11959673B2Apr 16, 2024
Enhanced method of lubrication for refrigeration compressors
CARRIER CORP0 citations48