Fan blade wheel

A wind impeller and fan technology, applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of not effectively improving the aerodynamic performance and acoustic indicators of the fan, increasing the manufacturing cost of the ribs, and increasing the centrifugal force of the blades, etc. , to achieve the effects of increasing the effective work area, promoting stability, and a reasonable center of gravity position
CN103486083AInactive Publication Date: 2014-01-01浙江科贸智能机电股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
浙江科贸智能机电股份有限公司
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

A fan blade wheel comprises blades (1) and a hub (2), wherein the blades (1) are distributed on the hub (2), each of the blades (1) is provided with a wide outer chord (13) and a narrow inner chord (14), the blade (1) positioned at the position of the outer chord (13) is provided with a fairshaped flap (15) which begins to extend to the rear end of the outer chord (13) from the position where the blade tip extends into 3%-30% of the length of the outer chord (13), and the rear edge (12) of each of the blades (1) is in a sawtooth shape. The fan blade wheel is characterized in that the inner chord (14) comprises a first inner chord (141) and a second inner chord (142), wherein a concave portion (16) is arranged on the surface of the blade (1) close to the second inner chord (142), the back surface at the bottom of the concave portion protrudes outwards from the other surface of the blade, and a connection mechanism connected with the hub (2) is arranged on the concave portion (16). The fan blade wheel has the advantages of being reasonable in structural design, high in operation stability, long in service life and good in application effect. By means of the fan blade wheel, the strength of the blades is high, energy is saved, and noise is low.
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Description

technical field

[0001] The invention relates to the technical field of an axial flow fan, in particular to a wind impeller of a fan with high structural strength and firmly fixed blades. Background technique

[0002] With the rapid development of the country's economic construction, the air-conditioning system is becoming more and more popular. The evaporative condenser in the air-conditioning system is a very important unit in the entire air-conditioning system. The performance of the cooling fan directly affects the operation effect of the air conditioning system. The ultra-low-noise axial-flow fans for air-conditioning condensers are required to be compact in size, light in weight, and have good aerodynamic performance and noise indicators. Since the operation of air-conditioning fans is mainly in winter and summer, the operating conditions are different, so new requirements are put forward for the average operating efficiency of the fans in multiple working conditions. ...

Claims

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