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Rotating rear guide vane of axial flow fan

A technology of axial flow fan and rear guide vane, which is applied in the direction of mechanical equipment, machine/engine, liquid fuel engine, etc., can solve the problem that the airflow flowing out of the axial flow fan tends to the axial direction, etc., and achieves improved noise, convenient use, and significant The effect of economic and social benefits

Inactive Publication Date: 2007-12-26
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Neither of the above two patents has the function of making the air flow out of the axial flow fan tend to be axial

Method used

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  • Rotating rear guide vane of axial flow fan

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Embodiment Construction

[0011] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] As shown in FIG. 1 and FIG. 2 , the rotating rear guide vane of the axial flow fan includes a rear guide vane blade 1 , a cylinder 2 and a rotating shaft 3 . The rear guide vane blade 1 is welded or riveted on the outer circumferential surface of the cylinder 2, and one end of the rotating shaft 3 is welded or riveted on the center of the circular surface at the end of the cylinder 2. The rear guide vane blade 1, the cylinder 2 and the rotating shaft 3 can also be made into one piece by casting method. There are three rotation modes for the guide vane after rotation: free rotation, driven by a motor or rotate together with the axial flow fan impeller 4 in front. When the rotating guide vane works in a free rotation mode, the other end of the rotating shaft 3 is connected to the bearing; when the rotating rear guide vane is driven ...

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Abstract

This invention relates to one wind rotation back shaft in flue mechanic technique field, which comprises Back shaft, cylinder and rotation shaft, wherein, The back shaft is fixed around the outside of the cylinder; The one end of shaft is fixed in center of the cylinder end and the shaft has three rotation types as free, electrical or shaft wind shaft rotation; For the later type, the entrance angle of shaft and leaf have different bending type; Due to the same direction of shaft rotation and slope wind flow, the three types release the flow intensity on the shaft to lower shaft flow.

Description

Technical field: [0001] The invention relates to a rear guide vane of an axial flow fan, in particular to a rotating rear guide vane of an axial flow fan suitable for axial flow and oblique (mixed) flow fans, and belongs to the technical field of fluid machinery. Background technique: [0002] For most axial flow fans with slightly higher pressure, a stationary rear guide vane is generally installed behind the impeller. This kind of rear guide vane is also often used in oblique (mixed) flow fans. Because the airflow usually flows out of the axial flow and oblique (mixed) flow fans, the direction is not axial, that is, there is a velocity component in the circumferential direction. In order to recover this part of energy, a stationary rear guide vane is often installed behind the impeller, so that the direction of air flow out of the axial flow and oblique (mixed) flow fans is basically axial. But because the blade of rear guide vane is fixed on the outer surface of axial f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/54
Inventor 顾建明顾茜姣陆明琦
Owner SHANGHAI JIAOTONG UNIV
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