US 12,228,313 B2
Refrigeration system with parallel compressors
Evan Aschow, Fair Oaks, CA (US)
Assigned to Effecterra, Inc., Reno, NV (US)
Filed by Effecterra, Inc., Reno, NV (US)
Filed on Mar. 4, 2022, as Appl. No. 17/687,277.
Prior Publication US 2023/0280072 A1, Sep. 7, 2023
Int. Cl. F25B 1/10 (2006.01); F25B 9/00 (2006.01)
CPC F25B 1/10 (2013.01) [F25B 9/008 (2013.01); F25B 2309/061 (2013.01); F25B 2400/075 (2013.01); F25B 2400/13 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A refrigeration system for cooling a space, the refrigeration system comprising:
a first compressor fluidly coupled with a low temperature heat exchanger, the first compressor configured to receive a refrigerant from the low temperature heat exchanger and pressurize the refrigerant;
a second compressor and a third compressor arranged in a parallel configuration; and
a three-way valve fluidly coupled with an outlet of the first compressor and fluidly coupled with an inlet of each of the second compressor and the third compressor, the three-way valve selectively operable between a first position in which the outlet of the first compressor is fluidly coupled with the inlet of the second compressor through the three-way valve, and a second position in which the outlet of the first compressor is fluidly coupled with the inlet of the third compressor through the three-way valve;
wherein the three-way valve is configured to selectively transition between the first position and the second position in response to a temperature of the refrigerant; and
wherein refrigerant from the low temperature heat exchanger is returned to a suction side of the first compressor;
wherein refrigerant from a medium temperature heat exchanger is returned through an accumulator to a position upstream of a suction side of the second compressor, downstream of an inlet of the three-way valve, and downstream of a discharge side of the first compressor.