Range hood centrifugal fan with double air inlet structure
A technology of range hoods and centrifugal fans, which is applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems of inconsistent air velocity distribution, limited noise reduction effect, and unsuitable centrifugal fans, etc., to offset noise , good noise reduction effect, ensure the effect of shape
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[0021] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.
[0022] See Figure 1-Figure 3 , A range hood centrifugal fan with double air intake structure, comprising a volute 1, an impeller 2 in the volute 1, a motor 3 for driving the impeller 2, and an air inlet ring 4 at the air inlet of the volute 1 .
[0023] Among them, the volute 1 includes a front cover 11, a rear cover 12, an annular intermediate casing 13 connected between the front cover 11 and the rear cover 12, and a volute tongue 14. The impeller 2 includes a front end ring 21 and a rear end ring 22. A plurality of blades 23 are fixed between the front end ring 21 and the rear end ring 22, and the blades 23 are fixed to the front end ring 21 and the rear end ring 22 by the existing conventional riveting method. Together. A middle plate 24 is also provided between the front end ring 21 and the rear end ring 22, thereby forming a bidirectional air intak...
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