| CPC F24F 11/77 (2018.01) [F24F 1/0033 (2013.01); F24F 1/005 (2019.02); F24F 2110/10 (2018.01)] | 8 Claims |

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1. An air conditioner comprising:
a housing internally comprising a first channel and a second channel which are different in inlets and outlets and isolated from each other;
a heat exchanger provided in the first channel and configured to exchange heat with air;
a first fan provided in the first channel and configured to emit air, of which heat is exchanged with the heat exchanger, to an outside of the housing in an indoor space;
a second fan provided in the second channel and configured to emit air, which moves along the second channel, to the outside of the housing;
a driver configured to drive each of the first fan and the second fan; and
a controller configured to control the driver to operate the first fan based on an indoor temperature and an outdoor temperature, and selectively operate the second fan based on a time section in which at least one of the indoor temperature or the outdoor temperature satisfies a preset temperature condition,
wherein the preset temperature condition comprises a condition about whether the indoor temperature is higher than a first threshold or the outdoor temperature is higher than a second threshold,
wherein the controller identifies whether the time section satisfying the preset temperature condition is a cooling section where the heat exchanger and the first fan operate for cooling, and
operates the second fan based on the time section identified as the cooling section,
wherein the controller identifies whether the time section dissatisfying the preset temperature condition is an initial cooling section, in which the heat exchanger initially operates, among the cooling sections,
wherein the controller prevents the second fan from operating based on the time section identified as the initial cooling section but operates the second fan based on the time section identified as not the initial cooling section, and
wherein the controller prevents the second fan from operating based on the time section dissatisfying the preset temperature condition and identified as not the cooling section.
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