Blades of Axial Fans for Air Conditioners, Axial Fans for Air Conditioners
An axial-flow fan and blade technology, which is applied to the blades of air-conditioning axial-flow fans and air-conditioning axial-flow fans, can solve the problems of insufficient air volume and high noise of airfoil fans, and achieve the effect of optimal air volume and noise reduction.
Active Publication Date: 2016-06-22
QINGDAO HAIER MOLDS
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Problems solved by technology
[0003] In view of the problems existing in the related art, the object of the present invention is to provide a blade of an axial flow fan for air conditioning and an axial flow fan for air conditioning with the blade, so as to solve the problems caused by the unreasonable design of the blade in the prior art. Insufficient air volume and high noise
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[0037] Such as Figure 1-7 Shown, describe the blade of the air-conditioning axial flow fan of the present invention, it is the special-shaped body that is formed by superposition of a plurality of characteristic cross-sections, the profile line of characteristic cross-section (for example Figure 5 shown) is a closed curve enclosed by the pressure surface curve and the suction surface curve. The characteristic section of the blade is defined by the parameters shown in Attached Table 1, which shows 11 characteristic sections and their corresponding parameters.
[0038] Attached Table 1: The characteristic section of the blade and the relevant parameters for determining the characteristic section
[0039]
[0040] combine Figure 1-5 The relevant parameters in Schedule 1 are defined as follows:
[0041] H%—the ratio of r to R;
[0042] r—the radius of the inscribed cylindrical surface of the fan hub, such as figure 1 shown; despite figure 1 The shape of the fan hub is ...
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The blade of the axial flow fan for air conditioning, when the blade is cut with a cylindrical surface coaxial with the axis of the fan determined by H%=0.7, r=38.18, has a characteristic cross-section that satisfies the following conditions: α 1 = 0°, α 2 =178°, β=33.2°, b=84.7, P 1x =48.919,P 1y =15.919,P 1z =-10.865,P 2x =26.459,P 2y =-44.119,P 2z =20.478; when the blades are respectively cut on the cylindrical surfaces determined by H%=0.3, r=38.18, H%=0.19, r=38.18, the values of the above parameters change accordingly, and the unmarked units are mm. An axial flow fan for air conditioning is also provided, and all blades are blades of the present invention. Through optimal parameter matching, the axial flow fan for air conditioner with blades of the present invention can achieve the purpose of optimal air volume and noise reduction within the range of rated working conditions.
Description
technical field [0001] The present invention relates to a blade of an axial flow fan for air conditioning and an axial flow fan for air conditioning with the blade. Background technique [0002] In the design process of axial flow fans for air conditioners, the design of the blade installation angle directly affects the aerodynamic performance of the blades, so it has an important impact on the fan air volume. The radial bending angle and forward-sweeping bending angle of the blade not only affect the air volume, but also have an important impact on the aerodynamic noise. At present, it is often difficult to achieve the best parameter matching in the fan design process, resulting in the problems of insufficient air volume and high noise in the old airfoil fan. With the development of computer technology and computational fluid dynamics (Computational Fluid Dynamics, referred to as CFD), and its advantages of short cycle, low cost, effective analysis of various influencing f...
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IPC IPC(8): F04D29/38
Inventor 许勤刘广源王维斌赵磊刘永辉马泽民
Owner QINGDAO HAIER MOLDS