Draught fan impeller and blade skeleton line fitting method thereof as well as draught fan
A technology for fan impellers and blades, applied in machines/engines, mechanical equipment, liquid fuel engines, etc., can solve problems such as the influence of fan aerodynamic performance and noise level, large pressure gradient at the blade outlet, and outlet airflow separation, etc. Efficiency, reducing pressure gradient, suppressing the effect of gas flow separation
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0049] Please refer to the attached Figure 1-6 , The fan impeller provided by the embodiment of the present invention includes: a rear disk 2 , and blades 1 arranged on the rear disk 2 . Wherein, the blade 1 includes a connected blade inlet section 11 and a blade outlet section 12, the blade inlet section 11 and the blade outlet section 12 are distributed sequentially along the length direction of the blade 1, the blade inlet section 11 is close to the centra...
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