CPC F24F 7/065 (2013.01) [F24F 1/0035 (2019.02); F24F 13/02 (2013.01); F24F 13/12 (2013.01); F24F 13/28 (2013.01); F24F 13/30 (2013.01)] | 20 Claims |
1. An air duct device, comprising:
a housing;
a first air duct that is arranged in the housing and having an air input end and an air output end; and
a second air duct that is arranged in the housing and having an air input end and an air output end, and the air input end of the second air duct passing by the air output end of the first air duct,
wherein the air input end of the second air duct includes an outdoor air input channel that passes through the first air duct and by the air output end of the first air duct,
an air direction of the outdoor air input channel is perpendicular to an air direction of the outlet of the first air duct,
wherein the first air duct is isolated from the second air duct,
wherein the air output end of the first air duct, the air output end of the second air duct, and the air input end of the first air duct communicate air with an indoor environment.
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