公开(公告)号：US20220412359A1

公开(公告)日：2022-12-29

申请号：US17840944

申请日：2022-06-15

Applicant: Danfoss Commercial Compressors

Inventor： Patrice BONNEFOI ,  Gabriel STREDA ,  Yves ROSSON ,  Jean-Jacques LAISSUS ,  Alexis DELORME

IPC: F04C29/02 ,  F04C18/02

Abstract: The refrigerant compressor includes a compressor casing (2); an oil sump (13) arranged in the compressor casing (2); and an oil level sensor arrangement (14) configured to detect an oil level in the oil sump (13), the oil level sensor arrangement (14) including a tubular element (16) secured to the compressor casing (2) and a floating element (17) surrounding the tubular element (16) and being movably mounted with respect to the tubular element (16). The compressor casing (2) includes a passage opening (24) and dimensions of the tubular element (16), the floating element (17) and the passage opening (24) are defined to allow an insertion and a removal of the tubular element (16) and the floating element (17) into and out of the compressor casing (2) through the passage opening (24).

公开(公告)号：US20250052242A1

公开(公告)日：2025-02-13

申请号：US18720744

申请日：2022-12-08

Applicant: DANFOSS COMMERCIAL COMPRESSORS

Inventor： Patrice BONNEFOI ,  Florent BERGEON ,  Gabriel STREDA ,  Brian ANGEL ,  Gang YAO ,  Qian HU

IPC: F04C23/00 ,  F04C29/02

Abstract: A scroll compressor including a hermetic casing provided with a suction inlet; a compression unit; a drive shaft configured to drive an orbiting scroll of the compression unit in an orbital movement; an electric motor coupled to the drive shaft; an oil sump; a refrigerant guiding device configured to force a main part of a refrigerant, entering the scroll compressor through the suction inlet, to flow downwardly through the electric motor, before reaching the compression unit; and an oil sump fairing arranged between a lower end of the electric motor and a free surface of oil stored in the oil sump, the oil sump fairing being configured to prevent a refrigerant flow, emerging from the lower end of the electric motor, to directly impact the free surface of the oil stored in the oil sump.

公开(公告)号：US20250003661A1

公开(公告)日：2025-01-02

申请号：US18753330

申请日：2024-06-25

Applicant: Danfoss Commercial Compressors

Inventor： Patrice BONNEFOI ,  Yves ROSSON ,  Gabriel STREDA ,  Alexis DELORME ,  Jean-Jacques LAISSUS

IPC: F25B49/02 ,  F25B31/00 ,  F25B41/20

Abstract: A method for managing oil in a running multi-compressor refrigeration system including a controller and a multi-compressor device, includes monitoring an oil level in the oil sump of each compressor through the respective oil level detection device; detecting that a lack of oil situation occurs in a running compressor, if the oil level in said running compressor reaches a predetermined threshold condition; performing an oil managing action if a lack of oil situation is detected for a running compressor, the oil managing action being based on a changing of ON/OFF configurations of the compressors in the multi-compressor device and including performing an oil balancing action, if more than a half of the total number of compressors are running, or performing an oil returning action, if a half or less of the total number of compressors are running.