公开(公告)号：US09377013B2

公开(公告)日：2016-06-28

申请号：US13715429

申请日：2012-12-14

Applicant: DANFOSS COMMERCIAL COMPRESSORS

Inventor： Patrice Bonnefoi ,  Dong Wang ,  Pierre Ginies ,  Ingrid Claudin

IPC: F04B35/04 ,  F04C23/00 ,  F04C29/02 ,  F04C18/02 ,  F04C28/08

CPC classification number: F04B35/04 ,  F04C18/0215 ,  F04C23/008 ,  F04C28/08 ,  F04C29/021 ,  F04C29/025 ,  F04C29/026

Abstract: The oil injection device according to the invention includes an oil pump designed to be rotationally coupled to the electric motor of a compressor and including inlet and outlet ports, an oil injection duct connected to the first outlet port and designed to supply a compression stage of the compressor with oil, and an oil return duct connected to the first outlet port and designed to return the oil into an oil sump of the compressor. The pressure losses in the oil injection duct are primarily singular pressure losses proportional to the square of the oil flow rate passing through the oil injection duct. The pressure losses in the oil return duct are primarily pressure losses due to friction proportional to the oil flow rate passing through the oil return duct.

Abstract translation: 根据本发明的注油装置包括设计成可旋转地联接到压缩机的电动机并且包括入口和出口的油泵，连接到第一出口端口的油注入管道，并被设计成提供压缩级的压缩级 具有油的压缩机，以及连接到第一出口端口并被设计成将油返回到压缩机的油底壳中的回油管道。 注油管道中的压力损失主要是与通过注油管道的油流量平方成正比的奇异压力损失。 回油管中的压力损失主要是由于与通过回油管道的油流速成比例的摩擦而产生的压力损失。