公开(公告)号：US11460224B2

公开(公告)日：2022-10-04

申请号：US16668603

申请日：2019-10-30

Applicant: Emerson Climate Technologies, Inc.

Inventor： Michael A. Saunders ,  Kory M. Place ,  James Scott Fraser ,  Natarajan Rajendran ,  Jason A. Born ,  Daniel J. Rice

IPC: F25B31/00 ,  F25B49/02 ,  F25B5/02 ,  F25B41/20 ,  F25B41/24

Abstract: Systems and methods for purging lubricant from a first compressor to a second compressor are provided. A control module receives a lubricant purge command, shuts the second compressor to an OFF-mode while the first compressor remains in the ON-mode, restricts working fluid from an outlet of the second compressor from flowing into the first compressor and allows compressed working fluid discharged from an outlet of the first compressor to flow into the inlet of the second compressor such that lubricant in the second compressor flows into the first compressor.