US 11,725,855 B2
Air conditioning apparatus
Chiwoo Song, Seoul (KR); Yongcheol Sa, Seoul (KR); Kakjoong Kim, Seoul (KR); and Ilyoong Shin, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Nov. 4, 2020, as Appl. No. 17/88,773.
Claims priority of application No. 10-2019-0178470 (KR), filed on Dec. 30, 2019.
Prior Publication US 2021/0199350 A1, Jul. 1, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F25B 13/00 (2006.01); F24F 3/06 (2006.01); F25B 25/00 (2006.01)
CPC F25B 13/00 (2013.01) [F24F 3/065 (2013.01); F25B 25/005 (2013.01); F25B 2313/0231 (2013.01); F25B 2600/2501 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An air conditioning apparatus, comprising:
an outdoor unit which comprises a compressor and an outdoor heat exchanger and through which a refrigerant is circulated;
an indoor unit through which water is circulated;
a heat exchanger in which the refrigerant and the water are heat-exchanged with each other;
a high-pressure guide tube extending from a high-pressure gas tube of the outdoor unit so as to be connected to one side of the heat exchanger;
a low-pressure guide tube extending from a low-pressure gas tube of the outdoor unit so as to be combined with the high-pressure guide tube;
a liquid guide tube extending from a liquid tube of the outdoor unit so as to be connected to the other side of the heat exchanger;
a bypass tube configured to connect a bypass branch point of the high-pressure gas tube to a bypass combination point of the liquid guide tube to bypass a high-pressure refrigerant existing in the high-pressure tube to the liquid guide tube; and
a bypass valve installed in the bypass tube, wherein the heat exchanger is provided in plurality, and when some of the plurality of heat exchangers function as condensers configured to condense the refrigerant, and remaining heat exchangers function as evaporators configured to evaporate the refrigerant, the bypass valve is opened to bypass the high-pressure refrigerant of the high-pressure gas tube to the heat exchangers that function as the evaporators.