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A centrifugal fan with a guide structure

A centrifugal fan and fan blade technology, which is applied to the components of the pumping device for elastic fluids, non-variable-capacity pumps, pump components, etc., can solve the problem of high noise of centrifugal fans, and achieve airflow noise containment and noise reduction. Effect

Active Publication Date: 2015-09-02
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the noise generated by the eddy current causes the centrifugal fan to be noisy during operation, the object of the present invention is to provide a centrifugal fan with a flow guide structure, which can reduce the air volume of the fan without reducing the air volume of the fan. Effectively reduce the noise of centrifugal fans from the source

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  • A centrifugal fan with a guide structure
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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below through specific embodiments.

[0025] Since the centrifugal fan used in the current embedded air conditioner is running, the back of the fan blade will generate eddy currents. This eddy current will not only reduce the efficiency of the fan, but also generate noise, which has a great impact on the operating noise of the centrifugal fan. big impact.

[0026] The main causes of centrifugal fan airflow noise mainly include two aspects: one is the pressure pulsation on the blade surface caused by the turbulent flow surface generated when the airflow passes through the blade surface of the fan blade 1; the other is that when the airflow flows through the blade surface, The development of the boundary layer on the surface of the blade to a certain extent leads to vortex shedding at the trailing edge of the blade, which increases the noise at the airflow outlet. Therefore, as long as the paramet...

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Abstract

The invention discloses a centrifugal fan provided with a flow guide structure. The centrifugal fan provided with the flow guide structure comprises fan vanes, the flow guide structure is arranged on the back surface of one or more fan vanes, and the flow guide structure is used for changing parameters of a boundary layer of each fan vane, putting off the separation of the boundary layer, preventing air flow from generating eddy and falling off at the tail edge position of each fan vane, and lowering the noise of the centrifugal fan.

Description

technical field [0001] The present invention relates to the field of air conditioners, and more specifically relates to a centrifugal fan that applies a flow guiding structure to an internal unit of an embedded air conditioner, so as to effectively reduce the noise generated by the centrifugal fan during operation. Background technique [0002] With the continuous popularization of air conditioners, the noise of air conditioners has been paid more and more attention by users, especially because users' subjective perception of air conditioner noise is more obvious than other performances, so users have higher noise requirements for air conditioners than other performances. In addition, the size of the noise directly affects the overall performance of the air conditioner, and then affects the market competitiveness of the product. Therefore, solving the noise problem of the air conditioner has always been the focus and difficulty of the technical research of major air condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28F04D29/30
Inventor 朱训智王元
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD