US 12,434,533 B2
Recreational vehicle air conditioning system with load sharing
Eric Scalf, Louisville, KY (US); and David Leezer, LaGrange, KY (US)
Assigned to MIDEA GROUP CO., LTD., Guangdong (CN)
Filed by Midea Group Co., Ltd., Foshan (CN)
Filed on May 4, 2023, as Appl. No. 18/312,020.
Application 18/312,020 is a division of application No. 17/490,899, filed on Sep. 30, 2021, granted, now 11,642,936.
Prior Publication US 2023/0271475 A1, Aug. 31, 2023
Int. Cl. B60H 1/00 (2006.01); F25B 49/02 (2006.01)
CPC B60H 1/00364 (2013.01) [B60H 1/0073 (2019.05); B60H 1/00885 (2013.01); F25B 49/025 (2013.01); B60H 1/00742 (2013.01); B60H 1/00785 (2013.01); B60H 1/00792 (2013.01); B60H 2001/00942 (2013.01); F25B 2600/021 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air conditioning system for a recreational vehicle, the system comprising:
a first recreational vehicle air conditioning unit for cooling a first zone in a living space of the recreational vehicle, the first recreational vehicle air conditioning unit including:
a first air conditioning circuit including a compressor, a first evaporator, and a first valve configured to regulate refrigerant flow through the first evaporator;
a first refrigerant port coupled in parallel with the first evaporator, the first refrigerant port including a first outlet coupled upstream of the first evaporator and a first inlet coupled downstream of the first evaporator; and
a second valve configured to regulate refrigerant flow through the first refrigerant port;
a second recreational vehicle air conditioning unit for cooling a second zone in the living space of the recreational vehicle, the second recreational vehicle air conditioning unit including:
a second air conditioning circuit including a second evaporator; and
a second refrigerant port including a second inlet coupled upstream of the second evaporator and a second outlet coupled downstream of the second evaporator;
a refrigerant line set coupling the first outlet to the second inlet and coupling the second outlet to the first inlet to place the second evaporator in fluid communication with the compressor; and
a controller coupled to the compressor and the first and second valves and configured to control the first and second valves while running the compressor to regulate refrigerant flow through each of the first and second evaporators and thereby control cooling of the first and second zones in the living space of the recreational vehicle.