Combined impeller

Abstract

The invention discloses a combined impeller. At least one impeller is arranged in an annular seat body, wherein the annular seat body is provided with a guide surface and is also provided with at least one annular body hole group, the annular body hole group comprises a plurality of concave clamping grooves and a concave annular body hole, and each clamping groove is communicated with the annularbody hole and the guide surface; and the impeller is provided with an annular body which is embedded into the annular body hole of the annular seat body, a plurality of blades encircle the periphery of the annular body, reinforcing sheets for connecting the annular body and the blades are arranged between the inner edges of the blades and the periphery of the annular body, the reinforcing sheets are correspondingly embedded into the clamping grooves, the inner edges of the blades and the guide surface have the same shape and are matched, and air passages are formed between the two adjacent blades and in a section formed by the annular seat body. Through the design, the weak sections formed between the annular body and the blades can be eliminated, so the impeller is not easy to deform, and accurate positioning and combination between the impeller and the annular seat body are favorable.

Description

Technical field [0001] The invention relates to a combined impeller, in particular to a combined impeller that uses a combination method to overcome the interference of mold demolding, increase the strength of the impeller component, prevent deformation, and accurately position and improve product quality. Background technique [0002] For existing cooling fans, please refer to the Chinese patent number ZL01268180.6 "Combined cooling fan" (please refer to Picture 11 ), the combined cooling fan 4 includes a lower fan body 41 and an upper fan body 42, the lower fan body 41 has a main body 411 with a top surface protruding into a cone shape, and a sleeve shaft 412 is protruding from the center of the top surface of the main body 411, A plurality of lower blades 413 protrude from the outer periphery of the main body 411. The top surface of the main body 411 extends outward from the periphery of the sleeve shaft 412 with a number of latching grooves 414 corresponding to the lower blade...

AI Technical Summary

Problems solved by technology

[0005] However, although the design of this cooling fan has a centrifugal effect to increase the wind pressure, the inner edge of the upper blade 622 is designed to correspond to the guide surface, so that the inner edge structure of the upper blade 622 is gradually lower from the middle to the outer periphery. , resulting in a fragile area W between the inner edge of the upper blade 622 and the ring body 621, and the upper blade 622 and the ring body 621 are only connected to each other in a small area, so that the strength is insufficient, and it is easy to deform, and it is difficult to make accurate and firm positioning

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