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Axial fan

A technology of axial fans and fan blades, which is applied to components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve problems such as the inability to improve the performance of axial fans as a whole, Achieve the effects of reducing vortex and turbulence, reducing weight and increasing cooling capacity

Active Publication Date: 2012-07-18
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are also designs for axial flow fans in the prior art, which can suppress fan noise and reduce the manufacturing cost of fans, they have not comprehensively considered the above factors and carried out comprehensive improvement and optimization design, so that the performance of axial flow fans cannot be improved as a whole. performance

Method used

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Embodiment Construction

[0019] Such as figure 1 as shown, figure 1 It is a schematic diagram of the front structure of the preferred embodiment of the axial flow fan of the present invention.

[0020] An axial flow fan proposed in this embodiment includes a hub 101 and three blades 102 mounted on the hub 101. The three blades 102 are centered on the central axis of rotation of the blades 102, and have an equal angle of 120°±5°. The distance is distributed, and the shape of the fan blade 102 is a sickle shape with a wide outside and a narrow inside, and is distorted in three-dimensional space.

[0021] Wherein, the edge located at the tail of the sickle is the trailing edge 106 of the fan blade 102 , and the concave arc edge opposite to the trailing edge 106 of the fan blade 102 and located at the tip side of the sickle is the front edge 107 of the fan blade 102 .

[0022] In this embodiment, three trapezoidal grooves 103 , 104 , 105 are sequentially arranged on the trailing edge 106 of the fan blad...

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Abstract

The invention relates to an axial fan, which comprises a hub and three blades mounted on the hub. The three blades are distributed at equal intervals by taking a blade rotation central axis as a center, each blade is provided with a tail edge and a front edge opposite to the tail edge, three trapezoidal grooves which are gradually decreased in depth are sequentially arranged at the tail edge of each blade from the outside to the hub, and short sides of trapezoidal bottom sides of the three trapezoidal grooves are close to the front edge of the corresponding blade. The axial fan has the advantages that separation of boundary layers is integrally decreased, radial flow is effectively reduced, air volume is provided by reducing wakes of a rotor, vortexes and turbulent flow are avoided, air volume of the axial fan can be effectively increased, efficiency of the axial fan can be effectively improved, and the axial fan can be lightened, so that comprehensive cost is reduced. The axial fan with the advantages can be better applicable to an outdoor unit of an air conditioner, the refrigerating capacity and the heating capacity of the air conditioner can be enhanced, and the energy efficiency ratio of the air conditioner can be increased.

Description

technical field [0001] The invention relates to the technical field of axial flow fans, in particular to an axial flow fan suitable for an outdoor unit of an air conditioner. Background technique [0002] At present, the outdoor unit of the indoor air conditioner basically adopts an axial flow fan, and the blades of the axial flow fan usually consist of 2-6 blades. Although the axial flow fan has the advantages of large air volume and low noise. However, the design of the axial flow fan has a direct impact on performance parameters such as cooling capacity, heating capacity and energy efficiency ratio of the air conditioner. Therefore, the optimal design of the axial flow fan is crucial to the performance of the air conditioner. [0003] For conventional axial flow fans, the air volume is proportional to the number of blades. The more blades, the easier it is to obtain a larger air volume. However, the more blades, the higher the cost and the more complicated the processin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/32F04D29/38
Inventor 招伟
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD
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