Elastic blade arranged on top of fan blade, blade provided with elastic blade, and fan

A blade and elastic technology, applied in the field of fan blades, can solve the problems of reduced operating efficiency, reduced air volume and pressure, large blade tip clearance, etc., to achieve the effect of prolonging life, enhancing air volume and wind pressure, and improving operating efficiency

Inactive Publication Date: 2017-01-04
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is carried out to solve the problem of reduced operating efficiency and significantly reduced air volume and pressure caused by the large blade tip clearance in the above-mentioned axial flow fan, as well as the bla

Method used

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  • Elastic blade arranged on top of fan blade, blade provided with elastic blade, and fan
  • Elastic blade arranged on top of fan blade, blade provided with elastic blade, and fan
  • Elastic blade arranged on top of fan blade, blade provided with elastic blade, and fan

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Example Embodiment

[0022] In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the following embodiments are combined with the accompanying drawings to specifically describe the elastic small blades provided on the top of the axial fan blades involved in the present invention.

[0023] figure 1 Is a three-dimensional schematic diagram of the elastic small blades in an embodiment of the present invention;

[0024] Such as figure 1 As shown, the elastic small blade 100 is plate-shaped, and has a connecting section 10, a curved section 20, and a free section 30.

[0025] figure 2 It is a schematic diagram of a longitudinal section of an elastic small blade in an embodiment of the present invention;

[0026] image 3 It is a schematic diagram of the installation of the elastic small blades and the fan blades in the embodiment of the present invention.

[0027] Such as figure 2 , image 3 As shown, the longitudinal section of...

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Abstract

The invention relates to an elastic blade arranged on the top of a fan blade, a blade provided with the elastic blade, and a fan. The small elastic blade arranged on the top of the axial flow fan blade is used for reducing the installation interval between the axial flow fan blade and a machine case. The small blade is in the shape of a plate, the longitudinal section of the small blade is L-shaped, the small blade comprises a free section, a connecting section and a bent section, and the bent section faces the suction surface of the axial flow fan blade. By additionally arranging the small blade with certain elasticity on the top of the fan blade, the operation efficiency of the fan, blast capacity and wind pressure are improved due to the fact that the installation interval between the axial flow fan blade and the machine case is reduced. Furthermore, blade damage is avoided even when the small blade with certain elasticity or flexibility collides with or rubs against the machine case. Therefore, the small elastic blade arranged on the top of the axial flow fan blade has the advantage that the operation efficiency of the fan, blast capacity and wind pressure can be improved.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a fan blade. Background technique [0002] Axial flow fans are generally used for ventilation in factories, warehouses, offices, residences, etc., and can also be used in air coolers (air coolers) and cooling towers. Axial flow fans are mainly composed of impellers, casings, motors and other components. Composition, in large-size axial flow fans such as cooling towers, the tip clearance between the blades of the impeller and the casing is usually relatively large, sometimes up to 30mm, which affects the operating efficiency of the axial flow fan and the air volume and pressure. adverse effects. For axial flow fans, the reduction in operating efficiency due to the large tip clearance may reach more than 5%, and the air volume and pressure will also be significantly reduced. Reducing the blade tip clearance can improve the performance of the fan, but if the clearance is too s...

Claims

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Application Information

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IPC IPC(8): F04D29/38F03D1/06
CPCF03D1/0675F04D29/382F04D29/388Y02E10/72
Inventor 黄典贵
Owner UNIV OF SHANGHAI FOR SCI & TECH
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