Scroll compressor for mobile hvac/r application

TL;DR: In this paper, a compact/low weight and highly efficient hermetic variable speed scroll compressor has been developed using comprehensive simulation models, which can operate at 45 degrees tilt and can match load requirements, thus minimizing power consumption.

Abstract: Comfort or food preservation and performance are always the primary emphasis for the mobile industry, but today protection of the environment is becoming increasingly important. This has driven interest in electric hybrid system with low refrigerant leakage and more efficient A/C and refrigeration components. To serve this market need, a compact/low weight and highly efficient hermetic variable speed scroll compressor has been developed using comprehensive simulation models. The new compressor embodies several design features like a high efficiency brushless permanent magnet motor with a 1600-5800 rpm speed range controlled by an inverter-drive, asymmetric scroll with vapor injection, and oil pump for low speed oil management. The developed scroll compressor is highly efficient across a wide speed and pressure ratio range, and proven reliable under off design operating conditions and can operate at 45 deg tilt. In addition to the above advantages, the compressor operation is independent of engine speed and can match load requirements, thus minimizing power consumption. Included below is a review of the compressor design features in terms of efficiency, durability and controls as well as system performance.