Rotary compressor with low pressure space surrounding outer peripheral face of compression mechanism and discharge passage passing through housing

A rotary compressor comprising:

• a compression mechanism including a cylinder having a cylinder chamber, a piston disposed in the cylinder chamber to be eccentric with respect to the cylinder, and a blade arranged in the cylinder chamber and dividing the cylinder chamber into a high pressure chamber and a low pressure chamber, the cylinder and the piston eccentrically moving relative to each other;
• a motor configured to drive the compression mechanism;
• and
• a casing configured to house the compression mechanism and the motor,
• the casing forming a low pressure space communicating with a suction port of the compression mechanism and a high pressure space communicating with a discharge side of the compression mechanism, an outer peripheral face of the compression mechanism being surrounded by the low pressure space, the suction port having an inner end open to the cylinder chamber and an outer end open to the low pressure space,
• the casing having a suction pipe fluidly connected to the low pressure space of the casing and a discharge pipe connected to a high pressure space side thereof, the suction pipe having an open end spaced from the outer end of the suction port and disposed in the low pressure space such that the open free end of the suction pipe opens into the low pressure space to directly supply fluid into the low pressure space and indirectly supply fluid to the outer end of the suction port via the low pressure space, and
• the compression mechanism being provided with a discharge space formed between a housing of the compression mechanism and a cover plate, a discharge port passing through the housing to communicate the high pressure chamber with the discharge space, and a discharge passage configured to allow the discharge space to communicate with the high pressure space,
• the entire discharge passage passing through the housing.