To provide a scroll compressor capable of being efficiently operated even if a high-pressure refrigerant such as carbon dioxide is used by reducing the leaked amount of the gas refrigerant in a compression chamber according to the operating conditions of the compressor ranging from a heavy load operation to a light load operation.
This scroll compressor comprises a fixed spiral vane member 11, a revolving spiral vane member 11, a main bearing member 7 installed on the opposite side of the revolving vane surface of the revolving spiral vane member 11, a high-pressure space positioned at the center inside of the main bearing member 7 and accumulating a lubricating oil under a discharge pressure, an intermediate-pressure space positioned on the outer peripheral inside of the main bearing member 7, and an annular seal member 7a partitioning the high-pressure space from the intermediate-pressure space. The revolving spiral vane member 11 is pressed against the fixed spiral vane member 10, and a spiral tip seal member 11c is fitted to the tip of the winding start part of a revolving vane 11b so that highly efficient operation under a wide range of operating conditions can be performed.
SHINTAKU HIDENOBU
YONEKAWA TETSUSHI
NISHIOKA TOSHIHIRO
SHIMADA KENJI
Tomoyasu Sakaguchi
Hiroki Naito