| 摘要 |
<p>A heat source unit having sealed compressors and forming an air conditioner using carbon dioxide as the refrigerant. The heat source unit (2) forms a refrigerant circuit (10) using the carbon dioxide as the refrigerant, and utilization units (4, 5) are connected to the heat source unit (2). The heat source unit (2) has the sealed compressors (21, 22) each having, installed in a casing (61), a compression element (62) and a compressor motor (63) for driving the compression element (62), polyalkylene glycol as a refrigeration machine oil, and an electric current cancellation device (95) for canceling a leakage current from the compressor motor (63).</p> |
