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Double-layer current collector and mixed flow fan provided with double-layer current collector

A mixed-flow fan and current collector technology, which is applied to parts of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., can solve the problems of weakening the working ability of impellers, etc., and achieve small product size and reasonable scheme , easy to achieve effect

Active Publication Date: 2019-10-25
XI AN JIAOTONG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

For high-pressure mixed-flow fans with a large change in the diameter of the impeller inlet and outlet, the outlet of the arc-shaped casing line and the hub line is axial, and the angle between the inlet side of the casing line and the rotating shaft is relatively large, and the airflow flows into the impeller. A low-speed vortex zone is formed, which weakens the working ability of the impeller

Method used

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  • Double-layer current collector and mixed flow fan provided with double-layer current collector
  • Double-layer current collector and mixed flow fan provided with double-layer current collector
  • Double-layer current collector and mixed flow fan provided with double-layer current collector

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Embodiment Construction

[0032] The present invention is further described below in conjunction with accompanying drawing:

[0033] see Figure 1 to Figure 4 , a double-layer current collector, comprising an outer layer current collector 7, an inner layer current collector 8 and a pillar 9; the inner layer current collector 8 is coaxially arranged in the outer layer current collector 7, and the outer layer current collector 7 It is connected with the inner layer current collector 8 through several radial pillars 9 .

[0034] The outer layer current collector 7 is a circular current collector, and the profile line of the section is a 1 / 4 arc.

[0035] The section of the inner collector 8 is an airfoil shape, and the chord length of the airfoil is half of the arc radius of the outer collector 7 .

[0036] The number of pillars 9 is three, and the three pillars 9 are arranged between the outer current collector 7 and the inner layer current collector 8 with equal arcs.

[0037] A mixed-flow fan based ...

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Abstract

The invention relates to a double-layer current collector and a mixed flow fan provided with the double-layer current collector. The double-layer current collector comprises an outer layer current collector, an inner layer current collector and struts; and the inner layer current collector is coaxially arranged in the outer layer current collector, and the outer layer current collector and the inner layer current collector are connected through the multiple struts in the radial direction. The mixed flow fan based on the double-layer current collector comprises the double-layer current collector, an impeller, a wheel cover, guide vanes, a casing and a motor. The scheme is reasonable, the structure is simple, implementation is easy, and by means of the current collector, the advantages of the mixed flow fan can be sufficiently achieved.

Description

technical field [0001] The invention belongs to the technical field of mixed-flow fans, in particular to a double-layer current collector and a mixed-flow fan equipped with double-layer current collectors. Background technique [0002] Mixed flow fans are widely used in mining, textile, metallurgy, power station, aviation, construction and other industries. The mixed flow fan has the advantages of both the axial flow fan and the centrifugal fan, and has a high pressure coefficient and flow coefficient. The air in the mixed flow fan has both centrifugal and axial movement. Due to its unique structural characteristics, the flow structure of the secondary flow inside the mixed flow fan is complicated. [0003] The mixed-flow fan with rear guide vanes is an axial inlet, and the flow direction in the impeller changes to an oblique upward flow. After flowing out of the impeller, it needs to be changed to axially enter the rear guide vane. The flow loss is greater when the airflo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/40F04D29/66
CPCF04D29/403F04D29/667
Inventor 刘小民刘刚
Owner XI AN JIAOTONG UNIV
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