US 11,988,403 B2
Air conditioner and control method thereof
Hongsuk Jin, Seoul (KR); and Sanghun Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jan. 29, 2021, as Appl. No. 17/162,305.
Claims priority of application No. 10-2020-0011698 (KR), filed on Jan. 31, 2020.
Prior Publication US 2021/0239350 A1, Aug. 5, 2021
Int. Cl. F24F 11/74 (2018.01); F24F 1/10 (2011.01); F24F 1/16 (2011.01); F24F 1/32 (2011.01); F24F 1/48 (2011.01); F24F 11/00 (2018.01); F24F 13/10 (2006.01); F24F 13/30 (2006.01); F24F 110/12 (2018.01); F24F 140/12 (2018.01)
CPC F24F 11/74 (2018.01) [F24F 1/10 (2013.01); F24F 1/16 (2013.01); F24F 1/32 (2013.01); F24F 1/48 (2013.01); F24F 11/0001 (2013.01); F24F 13/10 (2013.01); F24F 13/30 (2013.01); F24F 2110/12 (2018.01); F24F 2140/12 (2018.01)] 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 ventilator connected to the outdoor unit by a plurality of refrigerant pipes, and configured to supply the outside air to an indoor space and discharge the indoor air to an outside,
wherein the ventilator comprises:
a case defining a supply passage through which the outside air is supplied to the indoor space, and a discharge passage through which the indoor air is discharged to the outside;
a partition wall disposed in the case and separating the supply passage and the discharge passage;
a main heat exchanger disposed in the supply passage and configured to exchange heat between air flowing through the supply passage and the refrigerant;
an outside air inlet damper configured to open and close an outside air inlet formed in the case and configured to allow the supply passage to communicate with the outside;
an indoor air outlet damper configured to open and close an indoor air outlet formed in the case and configured to allow the discharge passage to communicate with the outside;
a circulation hole damper configured to open and close a circulation hole formed in the partition wall and configured to allow the supply passage to communicate with the discharge passage;
an outdoor temperature sensor configured to sense a temperature of the outside;
a controller configured to control operations of the outside air inlet damper, the indoor air outlet damper, and the circulation hole damper based on the temperature sensed by the outdoor temperature sensor, and
a pressure sensor configured to sense pressure of the refrigerant flowing into the outdoor unit,
wherein the controller is configured to control the operations of the outside air inlet damper, the indoor air outlet damper, and the circulation hole damper based on the pressure of the refrigerant sensed by the pressure sensor.