Patent ID: 7909592

Claim:
A scroll compressor comprising: a closed container having a lubricating oil storage chamber formed in a lower portion of the closed container; a motor disposed in a motor room in an upper portion of the closed container; a compression section provided in the closed container and separating the motor room from the lubricating oil storage chamber, the compression section including: an orbiting scroll having volute teeth formed substantially symmetrically on both surfaces of an orbiting base plate; and a pair of fixed scrolls, each of the fixed scrolls having a volute tooth corresponding to each of the volute teeth of the orbiting scroll to respectively form compression chambers; an oil feed pump for sucking up lubricating oil from the lubricating oil storage chamber; a main shaft penetrating through a center portion of the orbiting scroll and the fixed scrolls and driven by the motor, the main shaft having an oil feed path therein communicating with the oil feed pump for sucking up lubricating oil from the lubricating oil storage chamber, the oil feed path extending from the oil feed pump through inside of the main shaft to a feed opening at an upper fixed scroll main shaft bearing for discharging the lubricating oil through the feed opening, then passing through a main shaft bearing of the orbiting scroll and through a main shaft bearing of a lower fixed scroll, and delivering the lubricating oil down to the lubricating oil storage chamber; a suction pipe for introducing CO 2 suction gas into the motor room provided in the upper portion of the closed container and for causing the suction gas to be sucked into the compression section after cooling the motor; and a discharge pipe provided to the closed container for discharging the suction gas compressed by the compression section.