Patent ID: 8312737
Filing Date: 2012-11-20
Classification: F25B,F28D,Y10T

Abstract:
1. A refrigeration system comprising: a compressor; a heat rejection heat exchanger downstream of the compressor along a refrigerant primary flowpath; an expansion device downstream of the heat rejection heat exchanger along the refrigerant primary flowpath; and a heat absorption heat exchanger downstream of the expansion device along the refrigerant primary flowpath; and a single economizer heat exchanger unit between the heat rejection heat exchanger and the expansion device along the refrigerant primary flowpath and comprising: wherein: the compressor has a first cylinder, a second cylinder, and a third cylinder; the first economizer flowpath branches from the primary flowpath between the economizer heat exchanger and the expansion device and returns to the primary flowpath between the first and second cylinders and extends through: the second economizer flowpath branches from the primary flowpath between the economizer heat exchanger and the expansion device and returns to the primary flowpath between the second cylinder and the heat rejection heat exchanger and extends through: