US 11,754,320 B2
Refrigeration system with multiple heat absorbing heat exchangers
Sascha Hellmann, Hochheim am Main (DE); and Nicolas Pondicq Cassou, Aubagne (FR)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Dec. 18, 2020, as Appl. No. 17/126,860.
Claims priority of application No. 20156395 (EP), filed on Feb. 10, 2020.
Prior Publication US 2021/0247108 A1, Aug. 12, 2021
Int. Cl. F25B 1/10 (2006.01); F25B 9/00 (2006.01); F25B 5/02 (2006.01)
CPC F25B 1/10 (2013.01) [F25B 9/008 (2013.01); F25B 5/02 (2013.01); F25B 2341/0011 (2013.01); F25B 2341/0012 (2013.01); F25B 2341/0013 (2013.01); F25B 2400/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A refrigeration system comprising:
a single compression device having an inlet for receiving refrigerant fluid at a suction pressure and an outlet for providing compressed refrigerant fluid at a discharge pressure;
a heat rejecting heat exchanger arranged to receive compressed refrigerant fluid from the outlet of the compression device;
an ejector having a high pressure inlet, a low pressure inlet, and an outlet, the ejector being arranged to receive refrigerant fluid from the heat rejecting heat exchanger at the high pressure inlet of the ejector;
fluid pathways extending from the outlet of the ejector and branching into a branched flow path in order to provide refrigerant from the outlet of the ejector to a first expansion device and a second expansion device;
a first heat absorbing heat exchanger configured to receive refrigerant fluid from the first expansion device;
a second heat absorbing heat exchanger configured to receive refrigerant fluid from the second expansion device;
a receiver with an inlet configured to receive refrigerant fluid from the outlet of the ejector and a liquid outlet configured to provide refrigerant fluid to the branched flow; and
a first internal heat exchanger provided for transfer of heat from a first flow path after the receiver to a second flow path after the second heat absorbing heat exchanger;
wherein the first heat absorbing heat exchanger is for providing cooling via refrigerant fluid at a first temperature and refrigerant fluid from the outlet of the first heat absorbing heat exchanger is directed to the low pressure inlet of the ejector;
wherein the second heat absorbing heat exchanger is for providing cooling via refrigerant fluid at a second temperature and refrigerant fluid from the outlet of the second heat absorbing heat exchanger is directed to the inlet of the compression device; and
wherein the second temperature is lower than the first temperature.