公开(公告)号：US20190120528A1

公开(公告)日：2019-04-25

申请号：US16221954

申请日：2018-12-17

Applicant: Brooks Automation, Inc.

Inventor： Allen J. Bartlett ,  William Johnson ,  Mark Collins ,  Sergei Syssoev ,  James A. O'Neil ,  Michael J. Eacobacci

IPC: F25B7/00 ,  F25B9/02 ,  F25B9/14 ,  F25B9/00

Abstract: A heat exchanger within an insulated enclosure receives primary refrigerant at a high pressure and cools the primary refrigerant using a secondary refrigerant from a secondary refrigeration system. An expansion unit within the insulated enclosure receives the primary refrigerant at the high pressure from the heat exchanger and discharges the primary refrigerant at a low pressure. A supply line delivers the primary refrigerant at the low pressure to the load and a return line returns the primary refrigerant from the load to the primary refrigeration system. A system control unit controls operation of at least one of the primary refrigeration system and the secondary refrigeration system to provide a variable refrigeration capacity to the load based on at least one of: a pressure of the primary refrigerant delivered to the load, and at least one temperature of the load.