Back pressure space of a scroll compressor

摘要

A scroll compressor includes a casing, a compressor mechanism, a housing, a partition member and a flow mechanism. The compressor mechanism is accommodated in the casing. The compressor mechanism includes a fixed scroll and a movable scroll arranged to form a compression chamber. The housing is disposed on a back side of the movable scroll to form a back pressure space between the housing and the movable scroll. The partition member is disposed in an interior of the casing to form an auxiliary space communicating with the back pressure space. The a flow mechanism is arranged to enable a fluid to flow between the back pressure space and the auxiliary space, and the compression chamber in a process of compression.

主权项

1. A scroll compressor comprising:
a casing; a compressor mechanism accommodated in the casing, the compressor mechanism including a fixed scroll and a movable scroll arranged to form a compression chamber therebetween; a motor accommodated in the casing and connected to the compressor mechanism via a drive shaft; a housing disposed on a back side of the movable scroll to form a back pressure space between the housing and the movable scroll, the housing partitioning the casing into an accommodating space for the compressor mechanism and an accommodating space for the motor; the accommodating space for the compressor mechanism always communicating with the back pressure space and forming an auxiliary space; a flow mechanism arranged to enable a fluid to flow between the back pressure space and the auxiliary space, and the compression chamber in a process of compression; the back pressure space and the auxiliary space are in an intermediate pressure state between a pressure of the fluid sucked in the compression chamber and a pressure of the fluid discharged from the compression chamber; a space between the movable scroll and the housing being partitioned into a central space through which the drive shaft passes, and the back pressure space, which is formed on an outer side of the central space, and the central space being in an atmosphere of a discharge pressure of the fluid.