US 12,420,616 B2
Multi-compressor oil migration mitigation climate system
Yevgeniy Beygel, Long Grove, IL (US); Brett Herrmann, Rochelle, IL (US); Alexander Victor Puzin, Cherry Valley, IL (US); and Ian Boyes, Wimborne (GB)
Assigned to BERGSTROM, INC., Rockford, IL (US)
Filed by Bergstrom, Inc., Rockford, IL (US)
Filed on Oct. 25, 2022, as Appl. No. 17/972,932.
Application 17/972,932 is a continuation in part of application No. 16/922,855, filed on Jul. 7, 2020, granted, now 11,479,086.
Application 16/922,855 is a continuation of application No. 16/133,599, filed on Sep. 17, 2018, granted, now 10,703,173, issued on Jul. 7, 2020.
Application 16/133,599 is a continuation of application No. 15/280,876, filed on Sep. 29, 2016, granted, now 10,081,226, issued on Sep. 25, 2018.
Claims priority of provisional application 63/347,544, filed on May 31, 2022.
Claims priority of provisional application 62/378,135, filed on Aug. 22, 2016.
Prior Publication US 2023/0124191 A1, Apr. 20, 2023
Int. Cl. B60H 1/32 (2006.01); B60H 1/00 (2006.01); F25B 31/00 (2006.01); F25B 49/02 (2006.01)
CPC B60H 1/3214 (2013.01) [B60H 1/00849 (2013.01); B60H 1/00864 (2013.01); B60H 1/3223 (2013.01); B60H 1/323 (2013.01); F25B 31/004 (2013.01); F25B 49/022 (2013.01); F25B 49/027 (2013.01); B60H 2001/3238 (2013.01); B60H 2001/3255 (2013.01); B60H 2001/3272 (2013.01); F25B 2400/075 (2013.01); F25B 2600/01 (2013.01); F25B 2600/0251 (2013.01); F25B 2600/0253 (2013.01); F25B 2600/111 (2013.01); F25B 2700/2104 (2013.01); F25B 2700/2106 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A climate system for conditioning air within a compartment of a vehicle, comprising:
a refrigerant circuit;
a first compressor fluidly coupled to the refrigerant circuit, where the first compressor includes a first compressor inlet and a first compressor outlet;
a second compressor fluidly coupled to the refrigerant circuit, the second compressor including a second compressor inlet and a second compressor outlet;
a first refrigerant-to-air heat exchanger fluidly coupled to the first compressor outlet and the second compressor outlet via a first set of one or more refrigerant lines, wherein the first refrigerant-to-air heat exchanger is thermally coupled to an exterior of the vehicle and forms part of the refrigerant circuit;
a second refrigerant-to-air heat exchanger (i) fluidly coupled to the first refrigerant-to-air heat exchanger via a second set of one or more refrigerant lines and (ii) fluidly coupled to the first compressor inlet and the second compressor inlet via a third set of one or more refrigerant lines, wherein:
the second refrigerant-to-air heat exchanger is thermally coupled to the compartment of the vehicle and forms part of the refrigerant circuit, and
a first refrigerant line of the third set of one or more refrigerant lines includes a first section configured to cause any compressor oil mixed in the refrigerant to flow from a first lower elevation to a first higher elevation before flowing to the first compressor to restrict a flow of compressor oil to the first compressor when the first compressor is inactive; and
a second refrigerant line of the third set of one or more refrigerant lines includes a second section configured to cause any compressor oil mixed in the refrigerant to flow from a second lower elevation to a second higher elevation before flowing to the second compressor to restrict a flow of compressor oil to the second compressor when the second compressor is inactive; and
a controller communicatively coupled to the first and second compressors and including instructions that are configured to selectively activating and deactivating the first and second compressors.