US 12,222,139 B2
Heat pump with ejector
Ahmad M. Mahmoud, Windsor, CT (US); Parmesh Verma, Manlius, NY (US); Zuojun Shi, Marcellus, NY (US); and Frederick J. Cogswell, Glastonbury, CT (US)
Assigned to Carrier Corporation, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Jan. 23, 2023, as Appl. No. 18/100,370.
Application 18/100,370 is a continuation in part of application No. 16/989,603, filed on Aug. 10, 2020, granted, now 11,561,028.
Application 16/989,603 is a continuation of application No. 15/776,561, granted, now 10,739,052, issued on Aug. 11, 2020, previously published as PCT/US2016/062759, filed on Nov. 18, 2016.
Claims priority of provisional application 63/396,768, filed on Aug. 10, 2022.
Claims priority of provisional application 62/258,345, filed on Nov. 20, 2015.
Prior Publication US 2023/0160610 A1, May 25, 2023
Int. Cl. F25B 13/00 (2006.01); F25B 30/02 (2006.01); F25B 41/00 (2021.01); F25B 41/20 (2021.01); F25B 43/00 (2006.01); F25B 49/02 (2006.01)
CPC F25B 13/00 (2013.01) [F25B 30/02 (2013.01); F25B 41/00 (2013.01); F25B 41/20 (2021.01); F25B 43/003 (2013.01); F25B 43/006 (2013.01); F25B 49/02 (2013.01); F25B 2313/02741 (2013.01); F25B 2341/0011 (2013.01); F25B 2341/0013 (2013.01); F25B 2400/23 (2013.01); F25B 2700/2106 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system (300; 600) comprising:
a compressor (22) having a suction port (40) and a discharge port (42);
an ejector (32) having a motive flow inlet (50), a suction flow inlet (52), and an outlet (54), the ejector being a controllable ejector having a needle (60) shiftable between a closed position and a plurality of open positions;
a separator (34) having an inlet (72), a vapor outlet (74), and a liquid outlet (76);
a first heat exchanger (24; 602);
an expansion device (28);
a second heat exchanger (302) having a first section (336) and a second section (338); and
a plurality of conduits (80, 110, 140, 144, 148, 152, 154, 156) and a plurality of valves (100, 130, 310, 320, 380; 100, 130, 310, 320, 380, 680, 682, 684) positioned to provide alternative operation in:
a cooling mode wherein the needle is in the closed position to block flow from the motive flow inlet; and
a heating mode wherein a flowpath segment passes from the second heat exchanger through the motive flow inlet, the separator inlet and liquid outlet, and the expansion device and to the first heat exchanger,
wherein the plurality of valves are positioned so that:
in the heating mode refrigerant passes sequentially from the first section (336) to the second section (338); and
in the cooling mode refrigerant passes in parallel through the first section (336) and the second section (338).