Patent ID: 9657738
Date: 2017-05-23
CPC Classifications: F04C

Claim:
1. A scroll compressor comprising: a first fixed scroll comprising a first fixed spiral wrap, an orbiting scroll arrangement including at least a first orbiting spiral wrap, the first fixed spiral wrap and the first orbiting spiral wrap forming a plurality of first compression chambers, a drive shaft extending across the orbiting scroll arrangement, the drive shaft including a first portion and a second portion located on either side of the orbiting scroll arrangement, and a driving portion located between the first and second portions and adapted for driving the orbiting scroll arrangement in an orbital movement, a driving unit coupled to the drive shaft and arranged for driving in rotation the drive shaft about a rotation axis, and guide elements for guiding in rotation the drive shaft, the guide elements comprising at least a first guide bearing and a second guide bearing located on either side of the orbiting scroll arrangement and arranged to respectively guide the first and second portions of the drive shaft, wherein the drive shaft comprises a first end portion and a second end portion opposite to the first end portion, the first end portion including a central recess and having an external diameter larger than an external diameter of the second end portion.