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Axial fan

A technology of axial fans and fan blades, which is applied to axial flow pumps, components of pumping devices for elastic fluids, non-variable pumps, etc., can solve problems such as idling of axial fans, and achieve the effect of reducing noise

Active Publication Date: 2021-04-16
ACER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an axial flow fan, which can solve the problem that the existing axial flow fan is easy to generate separated flow and cause the axial flow fan to run idle.

Method used

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Embodiment Construction

[0083] Figure 1A It is a three-dimensional schematic diagram of an axial flow fan according to an embodiment of the present invention. Figure 1B yes Figure 1A A schematic side view of an axial fan. Figure 1C yes Figure 1A A schematic top view of an axial fan. Please refer to Figure 1A , Figure 1B and Figure 1C , the axial flow fan 100 of this embodiment includes a hub 110 and a plurality of blade sets 120 . The hub 110 is used to rotate around the central axis AX, and has a negative pressure side 111 and a positive pressure side 112 opposite to the negative pressure side 111 . A plurality of blade sets 120 are disposed around the hub 110 , and each blade set 120 is connected to the hub 110 . For brevity, only one set of blade sets 120 will be described below.

[0084] Specifically, the blade set 120 includes a first blade 121 , a second blade 122 and a third blade 123 , and these blades are all connected to the hub 110 . A central plane CP is defined at the middl...

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Abstract

The invention provides an axial fan. The axial fan comprises a hub and a plurality of fan blade sets. The hub is used for rotating around a central axis and is provided with a positive pressure side and a negative pressure side which are opposite. The fan blade sets are arranged on the periphery of the hub. Each fan blade set comprises at least two blades. In each fan blade set, each blade is provided with an air intake end, an air discharging end opposite to the air intake end, a negative pressure face and a positive pressure face opposite to the negative pressure face. The air discharging end of one of the two adjacent blades corresponds to the air feeding end of the other one of the two adjacent blades. The negative pressure face of one of the two adjacent blades corresponds to the positive pressure face of the other one of the two adjacent blades. A gap is formed between the negative pressure face of one of the two adjacent blades and the positive pressure face of the other one of the two adjacent blades.

Description

technical field [0001] The invention relates to a fan, in particular to an axial flow fan. Background technique [0002] In existing axial flow fans, the airfoil design of the blade section is related to the generation of separated flow. When the axial flow fan generates separation flow, the separation flow will cause the axial flow fan to stall, and then cause the axial flow fan to run idly and fail to drive air, thus reducing the heat dissipation efficiency. In addition, it can cause turbulence in the airflow and create disturbing noises. Therefore, it is very important for axial fans to reduce the generation of separated flow. Contents of the invention [0003] The invention provides an axial flow fan, which can solve the problem that the existing axial flow fan is easy to generate separated flow and cause the axial flow fan to run idly. [0004] An axial flow fan of the present invention includes a hub and multiple blade sets. The hub is used to rotate around the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D19/00F04D25/08F04D29/32F04D29/38F04D29/02F04D29/66
CPCF04D29/384
Inventor 林光华陈宗廷谢铮玟廖文能
Owner ACER INC