Abstract: A scroll-type volume displacement apparatus with an orbiting thrust bearing. A scroll element of the first end plate in a fixed scroll engages with a scroll element of the second end plate in an orbiting scroll, the fixed scroll and the orbiting scroll are set in the main housing respectively. The purpose of the apparatus is to set the thrust ball bearing between the orbiting scroll and the base shell, which can orbit along the orbiting scroll, so as to balance the potential shake generated in the orbiting movement along the orbiting scroll through the multi-group thrust ball bearings. And, by the sealed contact between the orbiting scroll and the thrust ball bearing, the axial deviating force of the orbiting scroll can seal the pressure chamber to keep the slight contact of the front and behind face of the two scrolls which engages with each other.

Abstract: An axial air cooling system for scroll-type positive fluid displacement apparatus provides needed cooling. The system includes an axial fan and centrifugal pump and internal cooling air channels inside parts integrating main housing, base housing and motor housing with their corresponding shell parts by cooling fins. The cooling air channel also includes passages inside the orbiting scroll, shaft central hole and gaps inside stator slots and winding. Heat pipes are installed inside the fixed and orbiting scrolls to conduct heat from inside of the apparatus to the peripheral condenser portion of the heat pipes to be cooled by the cooling air.