Impeller, centrifugal fan and range hood

A centrifugal fan and impeller technology, applied in the direction of oil fume removal, machines/engines, mechanical equipment, etc., can solve the problems of detached blades, etc., and achieve the effects of improving aerodynamic performance, reducing noise, and improving resistance

Pending Publication Date: 2022-02-18
HANGZHOU ROBAM APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an impeller, a centrifugal fan and a range hood, so as to alleviate the technology that the airflow boundary layer close to the blade exists in the impeller of the strong forward curved multi-blade centrifugal fan in the prior art, and it is easy to separate from the blade during the flow process. question

Method used

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  • Impeller, centrifugal fan and range hood
  • Impeller, centrifugal fan and range hood
  • Impeller, centrifugal fan and range hood

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Embodiment Construction

[0039] The technical solutions of the present invention will be described below in conjunction with the drawings, which is apparent from the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are in the range of the present invention without making creative labor premise.

[0040] In the description of the present invention, it is to be desirable, the orientation or positional relationship indicated by the term "within", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is intended to describe the present invention and simplified description. Instead of indicating or implying that the device or component must have a specific orientation, constructing and operating in a particular direction, and thus is not to be construed as limiting the invention. Moreover, the term "first", "second" is for description purposes only, and cannot be understood as...

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Abstract

The invention relates to the field of fan equipment, in particular to an impeller, a centrifugal fan and a range hood. The impeller comprises blades, turbulent flow structures are fixed to the blades, and the turbulent flow structures protrude out of the convex face sides of the blades. The centrifugal fan comprises the impeller. The range hood comprises the centrifugal fan. According to the impeller, the centrifugal fan and the range hood, airflow boundary layers close to the blades are not prone to being separated from the blades, noise generated by vortexes is low, the aerodynamic performance is good, and the oil smoke suction effect is good.

Description

Technical field [0001] The present invention relates to the field of fan devices, and in particular, there is an impeller, a centrifugal fan, and an oil hood. Background technique [0002] The suction hood generally utilizes strong front curved polygonal wind turbine, and the cigarette is inhaled by the middle air inlet of the centrifuge fan, and the passage between the blade of the centrifugal fan is discharged to the peripheral side of the impeller; the airflow is between the blade of the impeller During the channel flow, the airflow boundary layer is formed in the region near the surface of the blade, and in the airflow boundary layer, the fluid has a large viscosity. [0003] However, the flow path of the impeller of the strong bending polygonal fan is very short, and the degree of bending of the blade is large, resulting in the airflow boundary layer close to the blade, which is easy to disengage the blade during the flow process, and the mainstream of the exhaust gas stream...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28F04D29/30F04D29/44F04D29/66F04D29/68F24C15/20
CPCF04D29/281F04D29/30F04D29/441F04D29/663F04D29/667F04D29/681F24C15/20
Inventor 任富佳温俊生李智宝于巍巍张银锋周海昕
Owner HANGZHOU ROBAM APPLIANCES CO LTD
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