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Double-layer reverse axial fan

An axial-flow fan and reversing shaft technology, which is applied in the field of double-layer reversing axial-flow fans, can solve the problems of low fan efficiency and low heat dissipation.

Inactive Publication Date: 2011-05-11
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a double-layer reverse axial flow fan in order to overcome the disadvantages of low efficiency and low heat dissipation of traditional fans

Method used

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Embodiment Construction

[0011] Such as figure 1 As shown, the double-layer counter-rotating axial flow fan includes a plurality of first blades 1, a first axial flow fan 2, a motor fixing frame 3, a first motor 4, a second motor 5, a casing 6, and a plurality of second blades 7 , the second axial flow fan 8, the first hub 9 and the second hub 10; on the casing 6, a motor fixing frame 3 is fixed, on the motor fixing bracket 3, the first motor 4 and the second motor 5 are fixed, and on the first motor 4 is fixed with a first axial fan 2 on the rotating shaft, the first axial fan 2 includes a first hub 9 and a first blade 1, the first hub 9 is fixed with a first blade 1, and the rotation of the second motor 5 A second axial fan 8 is fixed on the shaft. The second axial fan 8 includes a second hub 10 and a second blade 7. The second hub 10 is fixed with a second blade 7. The first axial fan 2 and The rotation speed of the second axial flow fan 8 is the same, but the rotation direction is opposite, and t...

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Abstract

The invention discloses a double-layer reverse axial fan, which is characterized in that a motor holder is fixed on a machine case, and a first motor and a second motor are fixed on the motor holder; a first axial fan is fixed on a rotary shaft of the first motor, and comprises a first hub and a first leaf, the first leaf is fixed on the first hub; a second axial fan is fixed on a rotary shaft of the second motor, and comprises a second hub and a second leaf, the second leaf is fixed on the second hub; the rotate speeds of the first axial fan and the second axial fan are same, and the rotation directions of the first axial fan and the second axial fan are reverse; and the installation directions of the first leaf and the second leaf are reverse. The double-layer reverse axial fan has the advantages that under the mutual action of two rotors with the same leaf shape and reverse rotation directions, an original speed deviating from the axial direction is corrected, and the pressure energy of fluid is increased; and the fan is a double-layer fan, and the air quantity and wind pressure are improved by using a back installation method, thereby achieving the purpose of improving the heat dissipation efficiency.

Description

technical field [0001] The invention relates to a cooling fan, in particular to a double-layer reverse axial flow fan. Background technique [0002] At present, electronic components such as computers and electronic instruments usually use small axial flow fans as heat dissipation components. As the power of electrical equipment continues to increase, the demand for cooling fans with high ventilation and low noise is increasing. Currently known cooling fans are all single-rotor, and the method of increasing the speed to obtain more ventilation to improve the performance of the fan has the problems of reduced efficiency and increased noise. Double counter-rotating fans can achieve high pressure ratio, high efficiency and good ventilation in a small space. Contents of the invention [0003] The object of the present invention is to provide a double-layer counter-rotating axial flow fan in order to overcome the disadvantages of low efficiency and low heat dissipation of the...

Claims

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Application Information

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IPC IPC(8): F04D25/16F04D29/32H05K7/20
Inventor 金英子钱红玉张立柳品赵屹王龙辉
Owner ZHEJIANG SCI-TECH UNIV
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