Scroll Compressor

A scroll compressor configuring a suction room and a compression room between a fixed scroll and an orbiting scroll by bringing the fixed scroll and the orbiting scroll configured by erecting laps in a spiral shape on base plates in mesh with each other, reducing to press a volume of the compression room by moving to orbit the orbiting scroll, and having a back pressure room a pressure of which is higher than a pressure of the suction room on a back face of the base plate of the orbiting scroll,

• wherein shapes of the laps of the fixed scroll and the orbiting scroll are configured by an asymmetric tooth shape in which orbiting angles of an external line side compression room configured on an external line side of the orbiting scroll lap and an internal line side compression room configured on an internal line side of the orbiting scroll lap in finishing suction differ from each other,
• wherein a fluid outflow path for the external line side compression room communicating with the external line side compression room of the orbiting scroll lap, and a fluid outflow path for the internal line side compression room communicating with the internal line side compression room of the orbiting scroll lap are configured on the base plate of the orbiting scroll,
• wherein openings on outlet sides of the respective fluid outflow paths are configured to open to a lap tooth bottom of the orbiting scroll configuring the compression room,
• wherein openings on inlet sides of the respective fluid outflow paths are configured to open to a face of the base plate of the orbiting scroll sliding in contact with a sliding face of the base plate of the fixed scroll,
• wherein a face of the base plate of the fixed scroll in contact with the base plate of the orbiting scroll is configured with a communicating section control groove for intermittently communicating the respective inlet side openings of the fluid outflow path for the external line side compression room and the fluid outflow path for the internal line side compression room and the back pressure room in accordance with a movement of orbiting the orbiting scroll, and
• wherein the communicating section control groove is configured to control the communicating sections communicating the respective inlet side openings of the respective fluid outflow paths and the back pressure room such that a ratio of a time period of communicating the external line side compression room and the back pressure room to a time period of communicating the internal line side compression room and the back pressure room becomes the same as a ratio of an external line length to an internal line length of the lap of the orbiting scroll configuring the respective compression rooms or falls within a previously determined allowable value.