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Impeller and centrifugal fan

A technology of impeller and hub, which is applied in the field of centrifugal fans, can solve the problems of reducing the efficiency of centrifugal fans, achieve the effects of suppressing secondary flow, avoiding angular vortex, and improving efficiency

Inactive Publication Date: 2015-11-18
HEILONGJIANG KAIPURUI MACHINERY EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, see figure 1 , figure 1 It is a structural schematic diagram of an impeller in the prior art. The impeller is composed of a hub 1 and a plurality of blades 2 evenly distributed on one side of the hub 1 along the circumferential direction. The side surface of the hub 1 encloses the air flow channel. Since the smooth wall has little interference with the air flow, people often pursue the smoothness of the wall during processing. The smooth wall has little interference with the mainstream of the air flow. 1. The secondary flow in the surface boundary layer which is different from the main flow direction of the airflow also has no interference, and the secondary flow is the main cause of the angular vortex. The existence of the secondary flow will reduce the efficiency of the centrifugal fan

Method used

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Embodiment Construction

[0020] The invention provides an impeller and a centrifugal fan to achieve the purpose of suppressing the secondary flow in the flow channel, avoiding the generation of angular vortices and improving the efficiency of the centrifugal fan.

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] see Figure 2-Figure 4 , figure 2 Schematic diagram of the structure of the impeller provided by the embodiment of the present invention; image 3 The front view of the impeller provided for the embodiment of the ...

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Abstract

The invention discloses an impeller. The impeller comprises a wheel hub and a plurality of vanes which are uniformly distributed on the surface of one side of the wheel hub in the circumferential direction; a flow channel is formed between every two adjacent vanes; a plurality of flow guide bars which are arranged along the flow channels side by side are disposed on the parts, between the adjacent vanes, of the side surface of the wheel hub; during operation, the flow guide bars in the flow channels can stop a secondary flow; besides, the flow guide bars are arranged along the flow channels and the direction of the secondary flow can be changed under the action of the flow guide bars so as to be consistent with the direction of a main flow, and accordingly the purposes of inhibiting the secondary flow in the flow channels, avoiding corner vortex and increasing the efficiency of a centrifugal fan are achieved. The invention further discloses the centrifugal fan.

Description

technical field [0001] The invention relates to the technical field of centrifugal fans, in particular to an impeller and a centrifugal fan. Background technique [0002] The impeller is the main part of the centrifugal fan. The blades do work on the airflow to increase the pressure and flow rate of the airflow. [0003] In the prior art, see figure 1 , figure 1 It is a structural schematic diagram of an impeller in the prior art. The impeller is composed of a hub 1 and a plurality of blades 2 evenly distributed on one side of the hub 1 along the circumferential direction. The side surface of the hub 1 encloses the air flow channel. Since the smooth wall has little interference with the air flow, people often pursue the smoothness of the wall during processing. The smooth wall has little interference with the mainstream of the air flow. 1. The secondary flow in the surface boundary layer which is different from the main flow direction of the airflow also has no interferen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28F04D29/66
Inventor 冀春俊柯可张晨阳李静红仵忠浩
Owner HEILONGJIANG KAIPURUI MACHINERY EQUIP CO LTD