Cross bionic blade combining carangidae fish body and pinion and preparation method of cross bionic blade

A fish body and blade technology, which is applied to the components of the pumping device for elastic fluid, mechanical equipment, liquid fuel engines, etc., can solve the problems of insignificant increase in air volume and air pressure, reducing the working efficiency of the fan, and increasing the motor load, etc. Achieve the effect of reducing mass, reducing cross-sectional area, and eliminating eddy currents

Active Publication Date: 2018-08-10
XI AN JIAOTONG UNIV
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  • Application Information

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Problems solved by technology

In practical application, the above products have a certain noise effect, but the air volume and wind pressure increase are not obvious; in addition, the

Method used

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  • Cross bionic blade combining carangidae fish body and pinion and preparation method of cross bionic blade
  • Cross bionic blade combining carangidae fish body and pinion and preparation method of cross bionic blade
  • Cross bionic blade combining carangidae fish body and pinion and preparation method of cross bionic blade

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Embodiment Construction

[0030] The present invention is described in further detail below in conjunction with accompanying drawing:

[0031] Studies have shown that fish have evolved various shapes and complete physiological structures during the long-term evolution process, and these shapes and structures correspondingly enable them to have excellent swimming performances such as high efficiency and fast speed. In addition to the unique swing propulsion method, the high-efficiency swimming performance of fish also benefits from its effective drag reduction mechanism. In addition to the non-smooth structure of the fish skin, this drag reduction mechanism is also directly related to the streamlined shape of the fish. In addition, birds have evolved wings and feathers with diverse structures and excellent performance during the long-term evolution process. Studies have shown that goshawks have almost no sound when flying, thanks to their non-smooth structure at the leading edge and sawtooth structure a...

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Abstract

The invention discloses a cross bionic blade combining a carangidae fish body and a pinion and a preparation method of the cross bionic blade, and the cross bionic blade is used for a multi-blade centrifugal fan. The cross bionic blade comprises a blade body. The cross section of the blade body has a carangidae-fish-cross-section-contour-imitation appearance, the mean camber line of the blade bodycross section is in a single arc shape, and the circle center position, the circular arc radius and the circular arc central angle of the mean camber line of the blade body cross section are determined according to a forward-bent blade profile design method of the multi-blade centrifugal fan. The end face, facing the impeller sucking-in side, of the blade body is of a wave-shaped structure, and the end face, facing the impelling blowing-out side, of the blade body is of a saw-tooth-shaped structure. The blade can improve the flowing of airflow in the impeller on the premise of increasing theair volume, the pressure fluctuation on the surface of the blade is lowered, and the aerodynamic noise is lowered.

Description

technical field [0001] The invention relates to a bionic blade and a preparation method thereof, in particular to a cross bionic blade combined with a trevally fish body and a bird wing and a preparation method thereof. Background technique [0002] The forward-facing multi-blade centrifugal fan is widely used in household appliances such as range hoods and ventilation devices. It has the characteristics of compact structure, high pressure coefficient, and large flow coefficient. Its structure includes motor, volute and impeller. Among them, the impeller is the core component of the multi-blade centrifugal fan. It has the characteristics of large number of blades, large blade curvature, large inner and outer diameter of the impeller, and short blade passage. Its performance directly affects the range hood, ventilation, etc. devices and other household appliances. When the range hood is working, the motor is directly connected to drive the impeller to rotate, and the oil fu...

Claims

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Application Information

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IPC IPC(8): F04D29/30F04D29/66G06F17/50
CPCF04D29/281F04D29/30F04D29/666F04D29/667G06F30/17
Inventor 刘小民熊仲营
Owner XI AN JIAOTONG UNIV
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