Big and small impeller vane impeller with non-full height small blade and compressor machine
A blade impeller and small blade technology, which is applied in the field of blade impeller mechanical devices, can solve the problems of complex blade structure and low efficiency, and achieve the effect of suppressing secondary flow
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[0019] The large and small blade impeller with non-full-height small blades of the present invention, its preferred specific implementation is as follows Figure 4 As shown, it includes a plurality of large blades 5, and small blades 6 are arranged between two adjacent large blades 5. The radial height of the small blades 6 can be less than or equal to 20% of the height of the large blades 5, which can be 3 %, 10%, 15%, 20%, etc.
[0020] The axial chord length of the small blade 6 can be 30%-85% of the axial chord length of the large blade 5, and can be 30%, 45%, 55%, 70%, 85% and so on. That is to say, the small blade is not full size in the axial direction, but starts from a certain position in the axial direction. The trailing edge of the small blade 6 can be flush with the trailing edge of the large blade 5, or it can be slightly ahead of or behind the rear of the large blade 5. edge.
[0021] The starting arc of the small blade 6 can be the same as the central arc of t...
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