Efficient and low-noise multi-layer flow collector and centrifugal fan

A collector, low-noise technology, used in machines/engines, mechanical equipment, liquid fuel engines, etc., can solve problems such as inability to control small unit gases

Active Publication Date: 2021-04-09
FANS TECH ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent does not address the problem of controlling gas flow in a small cell located in the area between the first cone and the header

Method used

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  • Efficient and low-noise multi-layer flow collector and centrifugal fan
  • Efficient and low-noise multi-layer flow collector and centrifugal fan
  • Efficient and low-noise multi-layer flow collector and centrifugal fan

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0067] Such as image 3 and 4 As shown, this embodiment only describes the difference from the above embodiment, and the rest of the technical features are the same as the above embodiment. The current collector also includes a guide cone 4, which is arranged in the inner ring of the collector tube 3 adjacent to the center of the collector body 1, and the guide cone 4 is connected to the cascade. 2 connections. The header 3 is axially inserted into the impeller and the guide cone 4 is designed to better guide the gas into the impeller. The purpose of this design is to optimize the flow field at the impeller inlet, improve the efficiency of the fan, and reduce the noise of the fan. The material of the collector body 1 , collector barrel 3 , cascade 2 and diversion cone 4 is plastic or metal.

[0068] Preferably, along the flow direction of the gas, the side 41 adjacent to the apex of the guide cone 4 is connected to one end of the cascade 2 , and the bottom surface 42 of the...

Embodiment 3

[0070] This embodiment only describes the difference from the above embodiment, and other technical features are the same as the above embodiment. In this embodiment, the inner diameter of the outlet section 12 increases gradually from the gas inlet to the outlet.

Embodiment 4

[0072] This embodiment only describes the difference from the above embodiment, and other technical features are the same as the above embodiment. In this embodiment, the outlet section 12 is multi-arc, and its axial cross-section along the direction from the gas inlet to the outlet includes a plurality of arc segments.

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Abstract

The invention discloses an efficient and low-noise multi-layer flow collector and a centrifugal fan. Flow collecting barrels, blade grids and a flow guide cone are arranged on a flow collector body, so that the blade grids can achieve the effects of a front guide blade and supporting the flow collecting barrels and the flow guide cone. Meanwhile, the flow collecting barrels play a role in layering gas entering the flow collector, so that the gas enters an impeller more smoothly, and the flow guide cone plays a role in guiding the gas. Meanwhile, after the flow collector combining the multiple layers of flow collecting barrels and the flow guide cone is used for being axially inserted into the impeller, gas enters the impeller more smoothly through mutual cooperation of the blade grids, the flow collecting barrels and the flow guide cone, and then the inflow situation of each small unit gas on the inlet section of the flow collector is controlled, and the impeller inlet eddy current loss and the blade inlet impact loss are reduced, so that the purposes of efficiency improvement and noise reduction are achieved.

Description

technical field [0001] The invention relates to the field of fans, in particular to a high-efficiency and low-noise multi-layer current collector and a centrifugal fan. Background technique [0002] In the ventilation industry, most of the existing collectors adopt a single-layer form to guide the gas to flow into the impeller, but they cannot specifically control the inflow of each small unit of gas in the inlet section of the collector. The above problems are particularly prominent in centrifugal fans. , so it is necessary to design a collector with a multi-layer collector for the axial insertion of the impeller and the combination of the guide cone, which is used to restrict the inflow state of the impeller inlet gas, control the flow state of each small unit of gas, and improve the performance of the impeller. efficiency and reduce fan noise. [0003] The patent with publication number CN101846087A relates to a centrifugal fan and a hermetic motor provided with the cent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44F04D29/66
CPCF04D29/441F04D29/444F04D29/663F04D29/667
Inventor 李帅领陈宗华
Owner FANS TECH ELECTRIC CO LTD
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