Rotary type compressor having an intermediate pressure on a surface side of its compression member

A compressor comprising:

• a driving element stored in a sealed container;
• and a compression element driven by a rotary shaft of the driving element,
• the compression element comprising:
• a cylinder in which a compression space is constituted;
• a suction port and a discharge port which communicate with the compression space in the cylinder;
• a compression member having one surface side crossing an axial direction of the rotary shaft which is inclined continuously between a top dead center and a bottom dead center and which is rotatably disposed in the cylinder and which compresses a fluid sucked from the suction port to discharge the fluid from the discharge port into the compression space;
• and
• a vane which is disposed between the suction port and the discharge port to abut on the one surface side of the compression member and which partitions the compression space in the cylinder into a low pressure chamber and a high pressure chamber,
• wherein a pressure on an other surface side of the compression member, which is opposite the one surface side of the compression member, is set to a value which is lower than that of a pressure in the sealed container.