US 12,111,085 B2
Refrigerant circuit with reduced environmental impact
William Craig Larson, Lino Lakes, MN (US); Narasimha Sapta Sailesh Krovvidi, Woodbury, MN (US); Nicholas Scott Huppert, Ellsworth, WI (US); and Brian McCain, New Richmond, WI (US)
Assigned to REFRIGERATED SOLUTIONS GROUP LLC, Hudon, WI (US)
Filed by Refrigerated Solutions Group LLC, Hudson, WI (US)
Filed on Dec. 26, 2023, as Appl. No. 18/396,660.
Application 18/396,660 is a continuation of application No. 17/746,886, filed on May 17, 2022, granted, now 11,859,885.
Claims priority of provisional application 63/225,208, filed on Jul. 23, 2021.
Prior Publication US 2024/0125530 A1, Apr. 18, 2024
Int. Cl. F25B 49/02 (2006.01); F25B 5/02 (2006.01)
CPC F25B 49/02 (2013.01) [F25B 5/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A walk-in refrigeration unit comprising:
one or more refrigeration systems, each of the one or more refrigeration systems operatively coupled to a walk-in refrigeration unit, each of the one or more refrigeration systems configured to receive a refrigerant and a single source of power, wherein each refrigeration system comprises:
a condenser;
a plurality of compressors, wherein each of the plurality of compressors comprises a compressor input and a compressor output and wherein each compressor output is communicably coupled to the condenser;
an evaporator; and
propane refrigerant with a maximum charge of 5.3 ounces per each of the plurality of compressors.