公开(公告)号：US20230314048A1

公开(公告)日：2023-10-05

申请号：US18182764

申请日：2023-03-13

Applicant: Danfoss Commercial Compressors

Inventor： Thierry Legay ,  Patrice BONNEFOI

IPC: F25B7/00 ,  F04C2/02 ,  F04C11/00

CPC classification number: F25B7/00 ,  F04C2/025 ,  F04C11/001

Abstract: The multi-compressor system (7) has a plurality of parallelly coupled compressors (8); inlet connection lines (15) each connected to a refrigerant suction fitting of a respective compressor (8); outlet connection lines (17) each connected to a refrigerant discharge fitting of a respective compressor (8); a common oil balancing line (18) and balancing connection lines (19) each connecting the common oil balancing line (18) to an oil balancing connection (21) of a respective compressor (8); and spring-loaded normally-open valves (25) each being arranged within a respective balancing connection line (19) or within an oil balancing connection (21) of a respective compressor (8) and each being configured to close when a pressure difference between a pressure prevailing in the low pressure volume of the respective compressor (8) and a pressure prevailing in the common oil balancing line (18) reaches a predetermined value.

公开(公告)号：US12241670B2

公开(公告)日：2025-03-04

申请号：US18182764

申请日：2023-03-13

Applicant: Danfoss Commercial Compressors

Inventor： Thierry Legay ,  Patrice Bonnefoi

IPC: F25B7/00 ,  F04B41/06 ,  F04C2/02 ,  F04C11/00 ,  F25B31/00 ,  F25B41/20

Abstract: The multi-compressor system has a plurality of parallelly coupled compressors; inlet connection lines each connected to a refrigerant suction fitting of a respective compressor; outlet connection lines each connected to a refrigerant discharge fitting of a respective compressor; a common oil balancing line and balancing connection lines each connecting the common oil balancing line to an oil balancing connection of a respective compressor; and spring-loaded normally-open valves each being arranged within a respective balancing connection line or within an oil balancing connection of a respective compressor and each being configured to close when a pressure difference between a pressure prevailing in the low pressure volume of the respective compressor and a pressure prevailing in the common oil balancing line reaches a predetermined value.