Patent ID: 6935852

Claim:
A scroll compressor comprising: a fixed-scroll having a fixed-scroll wrap and a fixed plate; an orbiting-scroll having an orbiting-scroll wrap and an orbiting plate; a plurality of compression chambers formed by engaging the fixed-scroll wrap and the orbiting-scroll wrap; a back pressure chamber formed at an opposite side of the orbiting-scroll wrap of the orbiting-scroll; a high pressure chamber and a middle pressure chamber, which are formed by dividing the back pressure chamber using a seal; a first path for supplying lube oil from the high pressure chamber to the middle pressure chamber; and a second path for supplying the lube oil from the middle pressure chamber to a suction chamber of the compression chambers, wherein a fluid in the compression chambers is compressed by reducing a volume of the compression chambers toward a center of a scroll of the orbiting-scroll using orbit of the orbiting-scroll, and the first path is intermittently opened by the revolution of the orbiting-scroll, wherein a pressure-controlling device is formed at the second path.