US 12,320,569 B2
Climate control systems having ejector cooling for use with moderate to high glide working fluids and methods for operation thereof
Andrew M. Welch, Franklin, OH (US); and Daniel J. Rice, Sidney, OH (US)
Assigned to Copeland LP, Sidney, OH (US)
Filed by Copeland LP, Sidney, OH (US)
Filed on Nov. 17, 2022, as Appl. No. 17/989,271.
Prior Publication US 2024/0167732 A1, May 23, 2024
Int. Cl. F25B 9/00 (2006.01); F25B 13/00 (2006.01); F25B 40/00 (2006.01); F25B 41/26 (2021.01)
CPC F25B 9/006 (2013.01) [F25B 13/00 (2013.01); F25B 40/00 (2013.01); F25B 41/26 (2021.01); F25B 2313/02742 (2013.01); F25B 2341/001 (2013.01); F25B 2400/23 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A climate control system that circulates a working fluid comprising a refrigerant blend, the climate control system comprising:
the working fluid comprising a first refrigerant and a second refrigerant, wherein a difference in boiling points between the first refrigerant and the second refrigerant is greater than or equal to about 10° F. at atmospheric pressure;
a gas-liquid separation vessel that receives the working fluid and generates a vapor stream and a liquid stream;
a compressor that receives the vapor stream from the gas-liquid separation vessel and generates a pressurized vapor stream;
a first heat exchanger disposed downstream of the compressor that receives the pressurized vapor stream to generate a first multiphase or liquid working fluid stream;
an expansion device that receives the liquid stream from the gas-liquid separation vessel and generates a reduced pressure stream;
a second heat exchanger that receives the reduced pressure stream from the expansion device and at least partially vaporizes the reduced pressure stream to generate a second multiphase or vapor working fluid stream;
an ejector component disposed downstream of the first heat exchanger and the second heat exchanger that receives the first multiphase or liquid working fluid stream and the second multiphase or vapor working fluid stream to generate a third multiphase fluid stream that is directed to the gas-liquid separation vessel;
a third heat exchanger disposed downstream of the first heat exchanger and the second heat exchanger that is configured to receive the working fluid from the first heat exchanger in a first flow direction on a first side and direct it to the ejector component and configured to receive the working fluid from the second heat exchanger on a second side in a second flow direction that is opposite to the first flow direction and direct it to the ejector component; and
a fluid conduit for circulating the working fluid and establishing fluid communication between the gas-liquid separation vessel, the compressor, the first heat exchanger, the expansion device, the second heat exchanger, and the ejector component through which the working fluid circulates.