US 11,859,884 B2
Refrigerant bypass solution
Hongwei Yang, Shanghai (CN)
Assigned to SCHNEIDER ELECTRIC IT CORPORATION, Foxboro, MA (US)
Filed by SCHNEIDER ELECTRIC IT CORPORATION, Foxboro, MA (US)
Filed on Sep. 21, 2021, as Appl. No. 17/480,580.
Claims priority of application No. 202010895790.X (CN), filed on Aug. 31, 2020.
Prior Publication US 2022/0170465 A1, Jun. 2, 2022
Int. Cl. F25B 49/02 (2006.01); F25B 41/20 (2021.01); F25B 31/00 (2006.01); F25B 43/02 (2006.01)
CPC F25B 49/02 (2013.01) [F25B 31/004 (2013.01); F25B 41/20 (2021.01); F25B 43/02 (2013.01); F04C 2270/052 (2013.01); F04C 2270/09 (2013.01); F04C 2270/20 (2013.01); F25B 2400/04 (2013.01); F25B 2400/0401 (2013.01); F25B 2500/19 (2013.01); F25B 2600/2501 (2013.01); F25B 2700/1931 (2013.01); F25B 2700/1933 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system improving efficiency of a filter-type oil separator, the system comprising:
a compressor configured to compress and pressurize a mixture of refrigerant and lubricant;
the filter-type oil separator configured to receive a first portion of the compressed mixture of refrigerant and lubricant from the compressor;
a bypass line configured to bypass a second portion of the compressed mixture of refrigerant and lubricant around the filter-type oil separator;
a bypass valve configured to receive the second portion of the mixture of refrigerant and lubricant and provide a bypass path around the filter-type oil separator for the second portion of the mixture; and
a controller configured to process one or more input signals, determine a speed value of the compressor based on the one or more input signals, and adjust the bypass valve based on the speed value, the controller further being configured to
adjust the bypass valve to a first predetermined percentage of openness in response to determining the speed value exceeding a threshold,
adjust the bypass valve to a second predetermined percentage of openness, the second predetermined percentage being more than the first predetermined percentage, in response to determining the speed value increased, and
adjust the bypass valve to a third predetermined percentage of openness, the third predetermined percentage being less than the first predetermined percentage, in response to determining the speed value decreased.