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Rotor structure of a centrifugal fan

A rotor structure, centrifugal fan technology, used in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as pressure fluctuations and high inlet and outlet noise, reduce turbulence, reduce impeller inlet noise, and reduce pressure fluctuations Effect

Active Publication Date: 2019-11-26
青岛永胜昌风机科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing impellers include multiple first blades, multiple second blades, and multiple third blades, but there are problems of pressure fluctuations and large noise at the inlet and outlet in the different spacing spaces between the blades

Method used

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  • Rotor structure of a centrifugal fan
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  • Rotor structure of a centrifugal fan

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Experimental program
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Effect test

Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] See attached Figure 1-4 : The rotor structure of the centrifugal fan includes a first impeller 1, a second impeller 2, and a rotating shaft 3. The first impeller 1 and the second impeller 2 rotate together with the rotating shaft 3, and the rotating shaft 3 rotates under the drive of the motor. The second impeller 2 Set at the inlet hole of the first impeller 1 (at the inner diameter of the front disc 13).

[0021] The first impeller 1 includes a plurality of blades 11, a rear disc 12, a front disc 13, a hub 14, and a cylindrical section 15. The rotating shaft 3 includes a threaded segment 31 and a platform stage 32. The threaded section 31 and the platform stage 32 cooperate; the hub 14 and the cylindrical section 15 are integrally formed, and the outer circumference of the cylindrical section 15 is provided with the second impeller 2, and the cylin...

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PUM

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Abstract

The invention relates to a rotor structure of a centrifugal fan, comprising a first impeller (1), a second impeller (2) and a rotating shaft (3), characterized in that the blades of the first impeller include a plurality of first blades (16), A plurality of second blades (17), a plurality of third blades (18), the first blades, second blades, and third blades are alternately arranged along the circumference, and the second blades are located between the first blades and the third blades, and the first The leading edge radii of the first blade, the second blade, and the third blade are different and increase sequentially. It can reduce the possibility of pressure fluctuation and pressure shock in different spacing spaces, reduce the noise at the outlet of the impeller, reduce the turbulent flow at the inlet of the impeller, and reduce the noise at the inlet of the impeller.

Description

technical field [0001] The invention relates to the technical field of centrifugal fans, in particular to a rotor structure of a centrifugal fan. Background technique [0002] Centrifugal fans are widely used in various industries, production, and living environments. The structure of the impeller has a great influence on the pressure and noise control of centrifugal fans. The existing impeller includes a plurality of first blades, a plurality of second blades, and a plurality of third blades, but there are problems of pressure fluctuation and large noise at the inlet and outlet in the spaces between the blades at different intervals. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a rotor structure of a centrifugal fan, which can reduce the possibility of pressure fluctuations and pressure shocks in different space spaces, reduce the noise at the outlet of the impeller, and reduce the tur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F04D29/30F04D29/02F04D25/08
CPCF04D25/08F04D29/023F04D29/282F04D29/30F04D29/663F04D29/666F04D29/667
Inventor 赵浩浩
Owner 青岛永胜昌风机科技有限公司