US 11,754,324 B2
Refrigerant isolation using a reversing valve
Andrew M. Welch, Sidney, OH (US); Winfield S. Morter, Sidney, OH (US); Stuart K. Morgan, West Chester, OH (US); and Brian R. Butler, Centerville, OH (US)
Assigned to Copeland LP, Sidney, OH (US)
Filed by Emerson Climate Technologies, Inc., Sidney, OH (US)
Filed on Sep. 14, 2020, as Appl. No. 17/19,946.
Prior Publication US 2022/0082304 A1, Mar. 17, 2022
Int. Cl. F25B 13/00 (2006.01); F25B 49/02 (2006.01); F25B 39/00 (2006.01); F25B 41/26 (2021.01)
CPC F25B 13/00 (2013.01) [F25B 39/00 (2013.01); F25B 41/26 (2021.01); F25B 49/02 (2013.01); F25B 2313/0292 (2013.01); F25B 2313/02741 (2013.01); F25B 2500/222 (2013.01); F25B 2600/2515 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A refrigerant control system, comprising:
a reversing valve including:
a first inlet configured to receive refrigerant output from a condenser;
a first outlet configured to output refrigerant to an inlet of an evaporator located inside of a building;
a second inlet configured to receive refrigerant output from the evaporator; and
a second outlet configured to output refrigerant to an inlet of a compressor that pumps refrigerant to the condenser;
a reversing module configured to:
selectively actuate the reversing valve to a first position such that:
refrigerant flows directly from the second inlet to the second outlet; and
refrigerant flows directly from the first inlet to the first outlet; and
selectively actuate the reversing valve to a second position such that:
refrigerant flows directly from the second inlet to the first outlet; and
refrigerant flows directly from the first inlet to the second outlet.