Small fresh air fan
A technology for fresh air fans and fresh air fans, applied in the field of air purification, can solve the problems of unreasonable use of space, unreasonable location settings, low heat recovery efficiency, etc., to avoid rework design, improve fresh air quality, and high heat recovery efficiency. Effect
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[0047]The detailed structure of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0048] Such as figure 1 Shown: a small fresh fan, including a casing 1, an old air exhaust system and a fresh air system arranged in the casing 1, and a heat exchanger 5 arranged between the old air exhaust system and the fresh air system; The wind exhaust system includes an independently set old air intake area 2 and an old air discharge area 3; the fresh air system includes an independently set fresh air intake area 4 and a fresh air discharge area 6; the heat exchanger 5 is provided with a corresponding fresh air heat exchange outlet 53 and the fresh air heat exchange inlet 54 to form a fresh air channel; the heat exchanger 5 is also provided with a corresponding exhaust air heat exchange inlet 52 and an exhaust air heat exchange outlet 51 to form an exhaust air channel; the cross-sectional average wind speed of the ...
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