FIELD: fan devices.
SUBSTANCE: according to the aspect of the invention, fan device (10) for a channel is proposed, containing case (12) having inlet (24) and outlet (27) made with the possibility of ensuring the interaction of air with the channel, and impeller (22) driven around an axis and supported inside case (12) between inlet (24) and outlet (27). Impeller (22) contains hub (21) carrying set of blades (23) that extend in a radial direction outward from hub (21), wherein the set of blades has a shape that allows air to move between inlet (24) and outlet (27). Set of blades (23) can have an end continuity coefficient in the range from about 0.8 to 1.2, and each of set of blades (23) can have a twist angle between root (52) and end (54) of the blade in the range from about 15 to 30 degrees and an essentially constant thickness. In addition, impeller (22), blade (23), ventilation system and appropriate methods are proposed.
EFFECT: technical result is an improvement of the fan design.
40 cl, 12 dwg
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