US 12,188,696 B2
Air conditioner
Byungsoon Kim, Seoul (KR); Sanghun Lee, Seoul (KR); Ingon Kim, Seoul (KR); Jongchul Choi, Seoul (KR); Hongsuk Jin, Seoul (KR); Taeseung Yoon, Seoul (KR); and Yongjin Seo, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jan. 29, 2021, as Appl. No. 17/162,190.
Claims priority of application No. 10-2020-0011695 (KR), filed on Jan. 31, 2020.
Prior Publication US 2021/0239377 A1, Aug. 5, 2021
Int. Cl. F25B 41/20 (2021.01); F25B 13/00 (2006.01)
CPC F25B 41/20 (2021.01) [F25B 13/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air conditioner, comprising:
an outdoor unit including a compressor configured to compress a refrigerant and an outdoor heat exchanger configured to exchange heat between the refrigerant and outside air; and
a ventilation device connected to the outdoor unit through a liquid refrigerant pipe, a high-pressure refrigerant pipe, and a low-pressure refrigerant pipe, and configured to supply the outside air into an indoor space, and discharge indoor air to an outside,
wherein the ventilation device comprises:
a case defining a supply flow path through which the outside air is supplied to the indoor space, and a discharge flow path through which the indoor air is discharged to the outside;
a main heat exchanger disposed in the supply flow path, and configured to exchange heat between air flowing in the supply flow path and the refrigerant;
a re-heat heat exchanger disposed in the supply flow path, the re-heat heat exchanger being connected to a refrigerant distributor, and configured to heat the air that passed through the main heat exchanger;
a first blowing fan located downstream from the re-heat heat exchanger in the supply flow path;
a recovery heat exchanger disposed in the discharge flow path, and configured to exchange heat between air flowing in the discharge flow path and the refrigerant;
a second blowing fan located downstream from the recovery heat exchanger in the discharge flow path; and
the refrigerant distributor configured to supply the refrigerant from the outdoor unit to each of the main heat exchanger and the recovery heat exchanger, discharge the refrigerant from each of the main heat exchanger and the recovery heat exchanger to the outdoor unit, and direct the refrigerant between the main heat exchanger and the recovery heat exchanger,
wherein the refrigerant distributor is disposed in the case and is connected to the outdoor unit through the liquid refrigerant pipe, the high-pressure refrigerant pipe, and the low-pressure refrigerant pipe,
wherein at least one of the high-pressure refrigerant pipe and the liquid refrigerant pipe is directly connected to the refrigerant distributor,
wherein the supply flow path connects an outside air intake port through which the outside air flows in, and an outside air supply port through which the outside air is discharged to the indoor space,
wherein the main heat exchanger, the re-heat heat exchanger, and the first blowing fan are sequentially arranged in the supply flow path, and
wherein a width of the supply flow path increases from the outside air intake port to the main heat exchanger, and the width of the supply flow path decreases from the main heat exchanger to the re-heat heat exchanger.