US 11,656,012 B2
Cooling system with vertical alignment
Shitong Zha, Snellville, GA (US)
Assigned to Heatcraft Refrigeration Products LLC, Stone Mountain, GA (US)
Filed by Heatcraft Refrigeration Products LLC, Stone Mountain, GA (US)
Filed on Sep. 10, 2021, as Appl. No. 17/471,517.
Application 17/471,517 is a continuation of application No. 16/782,618, filed on Feb. 5, 2020, granted, now 11,149,997.
Prior Publication US 2021/0404717 A1, Dec. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F25B 41/40 (2021.01); F25B 41/20 (2021.01); F25B 1/00 (2006.01); F25B 49/02 (2006.01)
CPC F25B 41/40 (2021.01) [F25B 1/00 (2013.01); F25B 41/20 (2021.01); F25B 49/02 (2013.01); F25B 2600/2515 (2013.01); F25B 2700/1931 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a high side heat exchanger configured to remove heat from a refrigerant;
a first low side heat exchanger configured to use the refrigerant to cool a first space;
a second low side heat exchanger configured to use the refrigerant to cool a second space;
a first compressor configured to compress refrigerant from the first low side heat exchanger;
a second compressor configured to compress refrigerant from the second low side heat exchanger and the first compressor, the high side heat exchanger positioned vertically above the second compressor;
first piping configured to direct refrigerant from the second compressor to the high side heat exchanger, the first piping comprising:
a first p-trap positioned vertically above the second compressor and vertically below the high side heat exchanger; and
a second p-trap positioned vertically above the first p-trap and vertically below the high side heat exchanger;
second piping configured to direct refrigerant from the second compressor to the high side heat exchanger, the second piping is larger than the first piping, the second piping comprising:
a third p-trap positioned vertically above the second compressor and vertically below the high side heat exchanger; and
a fourth p-trap positioned vertically above the first p-trap and vertically below the high side heat exchanger.
 
8. A method comprising:
removing, by a high side heat exchanger, heat from a refrigerant;
using, by a first low side heat exchanger, the refrigerant to cool a first space;
using, by a second low side heat exchanger, the refrigerant to cool a second space;
compressing, by a first compressor, refrigerant from the first low side heat exchanger;
compressing, by a second compressor, refrigerant from the second low side heat exchanger and the first compressor, the high side heat exchanger positioned vertically above the second compressor;
directing, by first piping, refrigerant from the second compressor to the high side heat exchanger, the first piping comprising:
a first p-trap positioned vertically above the second compressor and vertically below the high side heat exchanger; and
a second p-trap positioned vertically above the first p-trap and vertically below the high side heat exchanger;
directing, by second piping, refrigerant from the second compressor to the high side heat exchanger, the second piping is larger than the first piping, the second piping comprising:
a third p-trap positioned vertically above the second compressor and vertically below the high side heat exchanger; and
a fourth p-trap positioned vertically above the first p-trap and vertically below the high side heat exchanger.
 
15. A system comprising:
a high side heat exchanger configured to remove heat from a refrigerant;
a first low side heat exchanger configured to use the refrigerant to cool a first space;
a second low side heat exchanger configured to use the refrigerant to cool a second space;
a first compressor configured to compress refrigerant from the first low side heat exchanger;
a second compressor configured to compress refrigerant from the second low side heat exchanger and the first compressor, the high side heat exchanger positioned vertically above the second compressor;
first piping configured to direct refrigerant from the second compressor to the high side heat exchanger, the first piping comprising:
a first p-trap positioned vertically above the second compressor and vertically below the high side heat exchanger; and
a second p-trap positioned vertically above the first p-trap and vertically below the high side heat exchanger;
second piping configured to direct refrigerant from the second compressor to the high side heat exchanger, the second piping is the same size as the first piping, the second piping comprising:
a third p-trap positioned vertically above the second compressor and vertically below the high side heat exchanger; and
a fourth p-trap positioned vertically above the first p-trap and vertically below the high side heat exchanger.