Scroll-type compressor and CO₂vehicle air conditioning system having a scroll-type compressor

摘要

A scroll-type compressor for a CO2 vehicle air conditioning system, having a movable displacement spiral which is rotatably connected to an eccentric bearing and which engages into a counterpart spiral such that, between the windings of the displacement spiral and of the counterpart spiral, there are formed chambers which travel radially inward in order to compress the refrigerant and discharge the refrigerant into a pressure chamber, wherein the displacement spiral is arranged on the suction side and the counterpart spiral is arranged on the high-pressure side. The scroll-type compressor is wherein the eccentric bearing is arranged in the displacement chamber between the displacement spiral and the counterpart spiral and has a bearing bushing which is formed integrally with the displacement spiral and the base of which is in alignment with the face side of the windings of the displacement spiral.

主权项

1. A scroll compressor for a CO2 air conditioning system of a vehicle, the scroll compressor comprising:
a housing; a stationary spiral disposed within the housing and including first windings; a movable displacement spiral disposed within the housing and defining a central recess, the movable displacement spiral including second windings and engaging with the stationary spiral to form a displacement chamber defined between the stationary spiral and the movable displacement spiral, wherein the first and second windings are interleaved to define a plurality of sub-chambers within the displacement chamber that compress refrigerant and discharge refrigerant into a pressure chamber when the movable spiral orbits relative to the stationary spiral; a bearing bushing formed with the movable displacement spiral and extending into the displacement chamber such that a face of the bushing is coplanar with a face side of the second windings; an eccentric bearing including a journal disposed within the bearing bushing and configured to orbit the movable displacement spiral, and a counterweight at least partially accommodated within the central recess and connected to the eccentric bearing.