US 12,228,300 B2
Air conditioner
Ilyoong Shin, Seoul (KR); Chiwoo Song, Seoul (KR); Ahrae Jo, Seoul (KR); and Eunjun Cho, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Feb. 22, 2023, as Appl. No. 18/112,612.
Claims priority of application No. 10-2022-0108387 (KR), filed on Aug. 29, 2022.
Prior Publication US 2024/0068686 A1, Feb. 29, 2024
Int. Cl. F24F 11/43 (2018.01); F24F 1/0068 (2019.01); F24F 5/00 (2006.01); F24F 11/64 (2018.01); F24F 11/84 (2018.01); F24F 13/30 (2006.01); F24F 1/005 (2019.01); F24F 1/0063 (2019.01); F24F 110/10 (2018.01); F24F 140/20 (2018.01)
CPC F24F 11/43 (2018.01) [F24F 1/0068 (2019.02); F24F 5/0035 (2013.01); F24F 11/64 (2018.01); F24F 11/84 (2018.01); F24F 13/30 (2013.01); F24F 1/005 (2019.02); F24F 1/0063 (2019.02); F24F 2110/10 (2018.01); F24F 2140/20 (2018.01)] 20 Claims
OG exemplary drawing
 
1. An air conditioner, comprising:
a case in which an air flow path through which outdoor air flows into an indoor space is formed;
a first heat exchanger disposed in the air flow path and that exchanges heat between the air and a refrigerant;
a second heat exchanger disposed downstream of the first heat exchanger in the air flow path, through which the refrigerant selectively flows, and that exchanges heat between the air and the refrigerant;
a liquid pipe connected to each of the first heat exchanger and the second heat exchanger, through which liquid refrigerant flows;
a high-pressure gas pipe connected to each of the first heat exchanger and the second heat exchanger, through which gaseous refrigerant flows;
a low-pressure gas pipe through which the gaseous refrigerant discharged from the first heat exchanger and the second heat exchanger flows;
a high-pressure gas pipe valve installed in the high-pressure gas pipe;
a low-pressure gas pipe valve installed in the low-pressure gas pipe;
an expansion valve installed in the liquid pipe; and
a controller configured to control an opening degree of the low-pressure gas pipe valve based on a temperature of the refrigerant flowing through the first heat exchanger.