Impeller mechanical wing profile with trailing edge ejection

A technology of impeller machinery and trailing edge, which is applied in the direction of mechanical equipment, engine components, machines/engines, etc., can solve the problems of uneven distribution of gas blade height, large hole interval, etc., and achieve simple structure, reduce unsteady force, and reduce The effect of interference noise

Inactive Publication Date: 2008-01-23
SHANGHAI JIAO TONG UNIV
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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.

Method used

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  • Impeller mechanical wing profile with trailing edge ejection

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Embodiment Construction

[0019] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0020] As shown in Figure 1 and Figure 2, this embodiment includes: control gas input pipe 1, gas main flow channel 2, gas branch flow channel 3, flow guide member 4, trailing edge jet hole 5, airfoil body 6, the connection relationship is : The inside of the airfoil body 6 is a cavity, the gas main channel 2 and the gas branch channel 3 are placed in the cavity, the control gas input pipe 1 is placed outside the airfoil body 6, and one end of the control gas input tube 1 is connected to the gas main channel 2 are connected at one end, and the other end of the gas mai...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44F01D9/02
Inventor 竺晓程吴亚东杜朝辉欧阳华
Owner SHANGHAI JIAO TONG UNIV
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