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1. (WO2018204218) SYSTEM AND METHOD FOR DEVICE UNDER TEST COOLING USING DIGITAL SCROLL COMPRESSOR

Pub. No.:    WO/2018/204218    International Application No.:    PCT/US2018/030091
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue May 01 01:59:59 CEST 2018
IPC: F04C 18/02
F04C 23/00
F04C 28/26
F25B 49/02
F25B 9/00
Applicants: TEMPTRONIC CORPORATION
Inventors: WENG, Chuan
ELSDOERFER, Norbert
Title: SYSTEM AND METHOD FOR DEVICE UNDER TEST COOLING USING DIGITAL SCROLL COMPRESSOR
Abstract:
A device under test cooling system has a refrigerant line and a fluid line extending through a plurality of successively arranged heat exchangers. A digital scroll compressor has an intake for providing the refrigerant mixture to the compressor and a discharge connecting the compressor to the refrigerant line to provide the refrigerant mixture to the heat exchangers. The compressor includes a plurality of scroll elements between the intake and the discharge for compressing the refrigerant mixture. The compressor includes a valve configured to separate the scroll elements when in an open position to allow refrigerant to flow freely between the intake and the discharge. When the valve is in a closed position, the scroll elements compress the refrigerant. A controller is configured to switch the valve between an open and closed position based on a set duty cycle.