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Helical blade compressed-gas type centrifugal draught fan

A technology of centrifugal fan and helical blade, which is applied in the field of centrifugal fan and helical blade compressed air centrifugal fan, and can solve the problems of large pressure loss and low efficiency

Inactive Publication Date: 2018-11-23
大连碧蓝节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of large pressure loss and low efficiency of ordinary cross-flow fans, as well as the limitation of the axial length of ordinary centrifugal fans, and provide a fan with unrestricted axial length and relatively high output airflow pressure. , high-efficiency helical blade compressed air centrifugal fan

Method used

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  • Helical blade compressed-gas type centrifugal draught fan
  • Helical blade compressed-gas type centrifugal draught fan
  • Helical blade compressed-gas type centrifugal draught fan

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Embodiment Construction

[0037] The present invention is further described below in conjunction with accompanying drawing.

[0038] refer to figure 1 , figure 2 , Figure 12 , Figure 15 , The centrifugal fan includes a base part, a diffuser 2, and an impeller part. The diffuser 2 is installed in the inner cavity of the base part, the impeller part is installed in the inner cavity of the diffuser 2, and the motor is installed in one axial end of the base part. When the centrifugal fan is running, the motor drives the impeller 3 of the impeller part to rotate. Under the action of centrifugal force, the airflow is accelerated during the process of flowing along the helical impeller channel 40 of the impeller 3, and then the airflow passes through the gap of the diffuser 2 The deceleration and pressurization in the channel 36 converts the kinetic energy transferred to the airflow by the impeller 3 into potential energy.

[0039] refer to Figure 1 to Figure 14 , the diffuser 2 is distributed with ...

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Abstract

The invention provides a helical blade compressed-gas type centrifugal draught fan, and relates to a centrifugal draught fan. The helical blade compressed-gas type centrifugal draught fan comprises anengine base component, a pressure expander and an impeller component. When the centrifugal draught fan runs, an electromotor drives an impeller to rotate, under the action of the centrifugal force, airflow is accelerated along a spiral impeller passage during flowing, then the airflow is decelerated and pressurized for the first time in a gap passage of the pressure expander, the kinetic energy transferred by the impeller to the airflow is converted into potential energy, the airflow enters a volute inner cavity of the engine base component, and the airflow is decelerated and pressurized in the volute inner cavity again to generate high-pressure airflow. The spiral impeller passage makes an air inlet of the centrifugal draught fan arranged in the radial direction of the centrifugal draught fan so that the negative pressure generated locally in the impeller passage can be fully utilized to increase the airflow flux, and the continuous and stable delivery of the airflow is ensured. Thecentrifugal draught fan has the advantages that the axial direction is not restricted, the output airflow pressure is larger, and the efficiency is higher.

Description

technical field [0001] The invention relates to a helical vane compressed air centrifugal fan, which relates to a centrifugal fan, in particular to a centrifugal fan with helical blades, unlimited axial length and a diffuser. Background technique [0002] The types of fans commonly used in home appliances include axial fans, cross-flow fans, and centrifugal fans. Its typical application product examples are vertical fans using axial fans, range hoods using centrifugal fans, and indoor units of air conditioners using cross-flow fans. Axial flow fans are characterized by large flow, low pressure, and high noise. The structure of the axial flow fan is simple. [0003] The cross-flow fan is characterized by moderate flow, moderate pressure and low noise. The axial length of the cross-flow fan is not limited, and the airflow at the air outlet is evenly distributed along the axial direction of the cross-flow fan. Compared with the axial flow fan, the airflow of the cross-flow ...

Claims

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Application Information

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IPC IPC(8): F04D17/06F04D29/42F04D29/44F04D29/28F04D29/30
Inventor 赵晓东
Owner 大连碧蓝节能环保科技有限公司
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