| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a scroll compressor preventing excessive feed of oil, even when a motor performs a high-speed rotation operation. <P>SOLUTION: The scroll compressor includes: a fixed scroll 23 fixed to the inside of a casing 3; a movable scroll 25 meshed with the fixed scroll 23; a support fixing member 21 fixed to the inside of the casing 3 and supporting the movable scroll in a freely revolvable manner; and a drive shaft 15 rotated by the drive force of the motor 13 to revolve the movable scroll 25. The movable scroll 25 includes a communication passage 52 for discharging oil from a high-pressure part inside the casing 3 to a clearance between the fixed scroll 23 and the movable scroll 25, and wherein a space formed between the movable scroll 25 and the fixed scroll 23 is compressed, the drive shaft 15 is provided with a return flow hole 15D at a top part of the drive shaft 15 along an axial direction inside the drive shaft to a downward intermediate part, and a spiral return flow groove 15E is circumferentially provided at the outer circumferential surface in a region for installing a rotor 13B in a manner in communication with the return flow hole 15D. <P>COPYRIGHT: (C)2013,JPO&INPIT |
