US 12,253,276 B2
Ventilation apparatus with total heat exchanger
Janghee Park, Seoul (KR); Jinwoo Lee, Seoul (KR); and Yongki Jeong, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jan. 20, 2023, as Appl. No. 18/099,734.
Claims priority of application No. 10-2022-0104150 (KR), filed on Aug. 19, 2022.
Prior Publication US 2024/0060677 A1, Feb. 22, 2024
Int. Cl. F24F 11/00 (2018.01); F24F 3/00 (2006.01); F24F 11/74 (2018.01); F24F 11/77 (2018.01); F24F 12/00 (2006.01); F24F 13/10 (2006.01); F24F 13/20 (2006.01); F24F 13/30 (2006.01); F24F 11/65 (2018.01)
CPC F24F 12/006 (2013.01) [F24F 3/001 (2013.01); F24F 11/74 (2018.01); F24F 11/77 (2018.01); F24F 13/20 (2013.01); F24F 13/30 (2013.01); F24F 11/65 (2018.01); F24F 2012/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A ventilation apparatus comprising:
a housing defining an inner space, the housing including:
a front surface having an indoor air inlet and an air discharge opening; and
a rear surface having an outdoor air inlet and an indoor air outlet;
a separation wall configured to divide the inner space of the housing into a ventilation portion and an air conditioning portion, the separation wall having an indoor air communication hole and an outdoor air communication hole;
a total heat exchanger located in the ventilation portion, the total heat exchanger having a hexahedral shape such that a front surface of the total heat exchanger contacts the front surface of the housing and a rear surface of the total heat exchanger contacts the rear surface of the housing;
an inner space of the ventilation portion being partitioned into a space for the total heat exchanger, an outdoor air inlet space, an outdoor air discharge space, an indoor air inlet space, and an indoor air discharge space;
a suction fan disposed in the outdoor air discharge space, the suction fan having an outlet connected to the outdoor air communication hole;
an exhaust fan disposed in the indoor air discharge space, the exhaust fan having an outlet connected to the indoor air outlet;
a bypass duct having a bypass passage configured to bypass the total heat exchanger, the bypass passage having an inlet communicating with the indoor air inlet space and an outlet communicating with the indoor air discharge space;
a supply-side mullion provided in the air conditioning portion and located adjacent the outdoor air communication hole, the supply-side mullion defining an outdoor air supply passage communicating with the outdoor air communication hole;
a discharge-side mullion provided in the air conditioning portion and located adjacent to the indoor air communication hole, the discharge-side mullion defining an indoor air discharge passage communicating with the indoor air communication hole;
an air conditioning passage defined between the supply-side mullion and the discharge-side mullion;
an evaporator disposed in the air conditioning passage;
an evaporation fan disposed in the air conditioning passage;
a supply damper provided on the supply-side mullion, the supply damper being configured to direct outdoor air passing through the outdoor air communication hole to flow to the outdoor air supply passage or to the air conditioning passage;
an exhaust damper provided on the discharge-side mullion, the exhaust damper being configured to direct indoor air flowing along the indoor air discharge passage to flow to the indoor air communication hole, to the air conditioning passage, or to both the indoor air communication hole and the air conditioning passage; and
a bypass damper mounted at the inlet of the bypass passage to direct indoor air passing through the indoor air communication hole to flow to one of the indoor air inlet space and the bypass passage,
wherein the air discharge opening communicates with both the outdoor air supply passage and the air conditioning passage, and
wherein indoor air passing through the indoor air communication hole passes through at least one of the total heat exchanger and the bypass passage according to an operation mode of the ventilation apparatus.