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Air guide ring, centrifugal fan and range hood

A technology of centrifugal fan and air guiding ring, which is applied in the direction of removing oil fumes, machines/engines, mechanical equipment, etc. It can solve the problems of not being able to adapt to the air supply environment, etc., and achieves weakened backflow phenomenon, good resistance to back pressure, and increased maximum standards The effect of static pressure

Pending Publication Date: 2022-02-22
FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, after further research, it has been found that the air guide ring usually adopts a uniform longitudinal section design, and its insertion depth into the air inlet of the centrifugal fan is uniform, which cannot adapt to different air supply environments

Method used

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  • Air guide ring, centrifugal fan and range hood
  • Air guide ring, centrifugal fan and range hood
  • Air guide ring, centrifugal fan and range hood

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0063] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. Implying their relative importance or implying the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

[0064] In addition, the meaning of "and / or" appearing in the ...

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Abstract

The invention discloses an air guide ring, a centrifugal fan and a range hood. The air guide ring is used for the centrifugal fan, the air guide ring is used for being mounted at an air inlet of the centrifugal fan, the air guide ring comprises an annular air guide part and a mounting part, and at least part of the annular air guide part is arranged in a necking mode in the air inlet direction; the inner edge of the annular air guide part is used for stretching into a volute of the centrifugal fan, the inner edge of the annular air guide part comprises a shallowest stretching point and a deepest stretching point, and the deepest stretching point protrudes out of the shallowest stretching point in the air inlet direction; and the mounting part is arranged on the outer edge of the annular air guide part. Therefore, the adaptability of the centrifugal fan to an air supply environment with unstable air pressure can be improved.

Description

technical field [0001] The invention relates to the technical field of centrifugal fans, in particular to an air guide ring, a centrifugal fan and a range hood. Background technique [0002] In some application scenarios, the centrifugal fan needs to send the wind into a specific environment with unstable wind pressure. For example, when the centrifugal fan is applied to the range hood field, the centrifugal fan needs to send the suctioned airflow In the public flue, but when the wind pressure in a specific environment is too high, that is, when the centrifugal fan is used in high back pressure conditions, return air / backflow will be generated. [0003] In view of the above problems, in the related art, a wind guide ring is provided at the air inlet of the volute of the centrifugal fan, on the one hand, it can reduce the negative impact of backflow on the suction airflow effect of the centrifugal fan (such as reducing the impact of backflow on the smoke effect of the range h...

Claims

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Application Information

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IPC IPC(8): F04D29/44F04D29/62F04D17/16F04D29/66F24C15/20
CPCF04D29/441F04D29/626F04D17/16F04D29/661F24C15/20F04D29/62F04D29/44F04D29/66
Inventor 何福添崔福浩汪耀东边乐超李忠华张野李伟刘华春陈茂伟
Owner FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG
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