Impeller mechanical wing profile with trailing edge ejection

Abstract

The invention relates to a wing for an axial-flow fan with tail-edge jetting in the technical field of impeller, which comprises an inputting pipe for the controlling gas, tail-edge jetting holes, a main gas passageway, branch gas passageways, diversion components, and the wing body. The inner of the wing body is a cavity, the main gas passageway and the branch gas passageways are in the cavity; the inputting pipe for the controlling gas is located outside the wing body; one end of the inputting pipe for the controlling gas is communicated with the main gas passageway, another end is communicated with the branch gas passageways; between the branch gas passageways, diversion components are provided. The tail-edge jetting holes are located at the tail edge of the wing body in equi-spaced way, the diameters of the tail-edge jetting holes are arranged in arithmetic progression along the tail edge of the wing body from the end with an inputting pipe for the controlling gas of the wing body to another end of the wing body. The invention fills the speed loss of the tail edge of the wing body, reduces the speed pulse at the tail area, reduces the interference from the downstream blades, and drops the interference noise.

Description

technical field [0001] The invention relates to an airfoil in the technical field of turbomachinery, in particular to a turbomachinery airfoil with trailing edge jet. Background technique [0002] Impeller machinery is not only widely used in various production sectors of the national economy such as energy and power, chemical petroleum, mining metallurgy, transportation, building air conditioning, food and medicine, water conservancy engineering, etc., and is closely related to people's daily life; There are also important uses. Such a wide range of applications makes turbomachinery occupy an important position in the national economy and national defense construction, and thus attracts people's attention to the performance of turbomachinery. At the same time, the operation of turbomachinery, especially the high-decibel noise produced by aeroengines affects people's normal life, and the noise problem of turbomachinery is also increasingly concerned by people. Therefore, im...

AI Technical Summary

Problems solved by technology

However, it has disadvantages: the small holes are equal in diameter, so that the gas ejected from the small holes is unevenly distributed along the height of the blade. In addition, the distance between the small holes is too large, and it is easy to form radially uneven fluctuating airflow.

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