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Diffusion device, fan and dust collector

A technology of diffuser and casing, applied in vacuum cleaners, pump devices, machines/engines, etc., can solve problems such as large energy loss and large noise

Active Publication Date: 2021-07-06
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present application is to provide a diffuser device to solve the problems in the related art that the airflow generated by the fan impeller tends to generate relatively large noise and large energy loss in the diffuser

Method used

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  • Diffusion device, fan and dust collector
  • Diffusion device, fan and dust collector
  • Diffusion device, fan and dust collector

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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0029] It should be noted that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined. "Several" means one or more than one, unless otherwise clearly and s...

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Abstract

The invention provides a diffusion device, a fan and a dust collector. The diffusion device comprises a base and a plurality of stationary blades, wherein the multiple stationary blades are sequentially arranged in multiple rows in the axial direction of the base, multiple stationary blades are arranged in each row, the multiple stationary blades in each row are arranged in the circumferential direction of the base, the cross section of the base is circular, and the thickness of each stationary blade in at least one row of stationary blades in the multiple rows of stationary blades is not constant from the head part to the tail part of the stationary blade. According to the diffusion device, by arranging the multiple rows of stationary blades in the circumferential direction of the base, airflow is gradually guided through the multiple rows of stationary blades, the absolute speed of the airflow is reduced, and then the pressurization effect is improved; and the thickness of each stationary blade in at least one row of stationary blades in the multiple rows of stationary blades is not constant from the head part to the tail part of the stationary blade, so that the flow separation can be relieved, the flow separation loss can be reduced, the diffusion effect can be improved, and the pneumatic noise can be lowered.

Description

technical field [0001] The present application belongs to the technical field of fans, and more specifically relates to a diffuser device, a fan using the diffuser device and a vacuum cleaner using the fan. Background technique [0002] At present, the fans used in hand-held vacuum cleaners and other equipment have the characteristics of small size and high speed (generally between 60,000 and 150,000 rpm). The motors of these fans drive the impellers to rotate. The airflow is sucked in from the inlet of the windshield. After obtaining a large kinetic energy through the impellers, it flows into the axial diffuser from the edge of the impellers along the radial direction of the impellers, and then flows out through the casing. The inlet of the wind hood forms a relatively large vacuum. When the airflow passes through the diffuser from the impeller, the interference area at the front end of the diffuser and the interior of the diffuser generate relatively large noise and large...

Claims

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Application Information

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IPC IPC(8): F04D29/44F04D29/66F04D25/08F04D29/42A47L5/22
CPCF04D29/444F04D29/667F04D29/663F04D25/08F04D29/4226A47L5/22F05D2240/12
Inventor 蒋婷婷张伟周亚运李虎
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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