Capacity modulation for plural compressors

Details Capacity modulation for plural compressors Capacity modulation for plural compressors

2004-03-22

2010-11-23

Rodriguez, William H (Department: 3741)

Pumps

Motor driven

Electric or magnetic motor

C417S426000, C418S055100

Reissue Patent

active

RE041955

ABSTRACT:
A compressor system includes a pair of compressors located in a common shell. A common drive shaft drives both compressors and the drive shaft is powered by a single motor. One or both of the compressors can be equipped with a pulse width modulated capacity control system and a vapor injection system. When one compressor is equipped with these systems, the capacity can be varied between 50% and 110%. When both compressors are equipped with these systems, the capacity can be varied between 0% and 120%.

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