Volute, centrifugal fan volute and range hood

A volute and volute tongue technology is applied to a volute. It can solve the problem of small air volume of the volute, and achieve the effect of reducing the flow loss.

Inactive Publication Date: 2014-08-27
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of small air volume of the volute, the object of the present invention is to provide a volute, a centrifugal fan volute containing the volute, and a range hood containing the centrifugal fan volute

Method used

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  • Volute, centrifugal fan volute and range hood
  • Volute, centrifugal fan volute and range hood
  • Volute, centrifugal fan volute and range hood

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Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the volute, the centrifugal fan volute and the range hood of the present invention more clear, the present invention will be further described in detail below in conjunction with specific drawings and specific embodiments.

[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0021] see figure 1 and figure 2 , the present invention provides a volute, including a front plate 100, a side wall plate 200, a bottom plate 300 and a volute tongue 400, an air inlet 110 is arranged on the front plate 100, and the front plate 100 and the bottom plate 300 are respectively connected to the side wall plate 200 , the front plate 100 is provided with a guide ring, the edge of the side wall plate 200 is a logarithmic helix, and the side wall plate 200 encloses a hollow cavity, and the edge line of ...

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Abstract

The invention provides a volute, a centrifugal fan volute and a range hood. The volute comprises a front plate, a side wall plate, a bottom plate and a volute tongue, an air inlet is formed in the front plate, the front plate and the bottom plate are respectively connected with the side wall plate, the edges of the side wall plate are logarithmic spiral lines, a hollow cavity is formed by the side wall plate, the edge line of the volute tongue comprises an arc segment and a straight line segment, the arc segment and the straight line segment are in smooth transition, the arc segment is connected with the side wall plate, and extending lines of the logarithmic spiral lines of the side wall plate are tangent to the arc segment. The volute tongue is different from the traditional design, the arc segment of the volute tongue is tangent to the extending lines of the logarithmic spiral lines of the side wall plate, and therefore air flows more smoothly in the flowing process, flowing losses are reduced, the air volume of the volute is high at the same rotating speed, and the high air volume requirement is met.

Description

technical field [0001] The invention relates to the field of centrifugal fans, in particular to a volute. Background technique [0002] The role of the range hood centrifugal fan volute is to concentrate and guide the gas coming out of the impeller, and convert part of the kinetic energy of the gas into static energy, so that the gas can be transmitted out. When the impeller rotates, the airflow brought by the impeller collides with the volute tongue periodically, and the airflow periodically passes through the gap of the volute tongue, resulting in loss of air volume and a periodic noise. The traditional centrifugal fan volute is mostly straight volute tongue, and the radius of the volute tongue is constant. The structure of the traditional centrifugal fan volute is as follows: the impeller is set in the volute, the volute includes a front plate, a side wall plate, a bottom plate and a volute tongue, the front plate is provided with an air inlet, the bottom plate is connec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F24C15/20
Inventor 柳洲杨勇陈运波张建平黄巍
Owner GREE ELECTRIC APPLIANCES INC
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