Combined centrifugal impeller
A centrifugal impeller, combined technology, applied in non-variable pumps, components of pumping devices for elastic fluids, machines/engines, etc., can solve the problem that the uneven distribution of the axial velocity gradient of the impeller cannot be improved, and cannot be changed Problems such as the flow velocity at the outlet of the fan and the narrow applicable surface of the impeller achieve the effects of improving work efficiency, improving the uneven distribution of axial velocity gradients, and reducing aerodynamic noise
Pending Publication Date: 2021-10-22
GUANGDONG SUNWILL PRECISING PLASITC CO LTD
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Problems solved by technology
[0002] The existing household plastic centrifugal impeller is limited by production and processing. Under the one-time molding injection molding process, the diameter and height of the impeller are fixed values, which makes it impossible to change the flow velocity at the fan outlet and improve the uneven distribution of the axial velocity gradient of the impeller, resulting in A spiral converging vortex is formed, which generates aerodynamic noise; and the traditional plastic impeller has a narrow application area, which cannot meet the needs of customers in the market for the highly universal adaptation of impellers with similar diameters to different platforms.
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[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0024] In the description of the present invention, multiple means more than two, greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. It should be understood that, when referring to orientation descriptions, for example, orientations or positional relationships indicated by up, down, etc. are based on the orientations or positional relationships shown in the drawings. It is only for the convenience of describing the p...
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The invention discloses a combined centrifugal impeller. The combined centrifugal impeller comprises a hub, a plurality of first blades, a first frame and a plurality of second blades; one ends of the plurality of first blades are spaced from one another and are annularly distributed at one end of the hub; the first frame is mounted at the other ends of the first blades; and one ends of the plurality of second blades are spaced from one another and are annularly distributed at the other end of the hub. According to the combined centrifugal impeller, the second blades are additionally arranged under the condition that the flow is not changed, so that the overall height of the combined centrifugal impeller is increased, the flowing speed of a fan outlet is reduced, uneven axial speed gradient distribution of the impeller is improved, spiral confluence vortexes formed at the fan outlet due to uneven speed distribution are reduced, the working efficiency of the impeller is improved, and the pneumatic noise of the fan in use is reduced.
Description
technical field [0001] The invention relates to the technical field of ventilation, in particular to a combined centrifugal impeller. Background technique [0002] The existing household plastic centrifugal impeller is limited by production and processing. Under the one-time molding injection molding process, the diameter and height of the impeller are fixed values, which makes it impossible to change the flow velocity at the fan outlet and improve the uneven distribution of the axial velocity gradient of the impeller, resulting in A spiral converging vortex is formed, which generates aerodynamic noise; moreover, the traditional plastic impeller has a narrow application area, which cannot meet the needs of customers in the market for highly universal adaptation of impellers with similar diameters to different platforms. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the pr...
Claims
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Login to View More IPC IPC(8): F04D29/28F04D29/30F04D29/66
CPCF04D29/281F04D29/30F04D29/666F04D29/667
Inventor 刘阳明覃万翔刘爱瑜叶涛
Owner GUANGDONG SUNWILL PRECISING PLASITC CO LTD