Displacement compressor

摘要

In a displacement compressor (1) aiming at a high annual performance factor (APF) and a high integrated part load value (IPLV), since a driving current at a time of a high load becomes larger than a conventional one so as to cause an increase of an electric current flowing in a bearing portion, there is a problem of lowering a bearing reliability due to an electric wear of bearing. The invention lightens a bearing damage due to the electric wear of bearing so as to enhance the bearing reliability of the displacement compressor by reducing an electric current itself flowing in a bearing portion, and provides a displacement compressor having a high energy efficiency which can mount a high performance inverter capable of switching at a high speed. Neutral points (22-N1, 22-N2, 22-N3) in respective three phases are connected as shown in Figs. 2 and 3, and a general neutral point (23-N) connecting the neutral points (22-N1, 22-N2, 22-N3) in the respective three phases is arranged.