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Exhaust fan

An exhaust fan and box technology, which is applied to the components of the pumping device for elastic fluid, non-variable-capacity pumps, pump devices, etc., can solve the problems of low efficiency and high noise of the exhaust fan, and reduce the The effect of noise, low noise and high efficiency

Pending Publication Date: 2018-03-13
ZHONGSHAN BROAD OCEAN
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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 exhaust fan, which can solve the problems of low efficiency and high noise of existing exhaust fans

Method used

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Examples

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Embodiment 1

[0032] Such as Figure 3 to Figure 8 As shown, what this embodiment provides is an exhaust fan, including a box body 1 and a volute fan. The box body 1 includes a cover plate 11, a side plate 12 and a bottom plate 13. Bottom plate 13 encloses accommodating cavity, and described volute fan includes volute 2, wind wheel 3 and motor 4, and described volute 2 is fixed in the accommodating cavity of box body 1, and described volute 2 comprises front end Plate 21, rear end plate 22 and side plate 23 connected between front end plate 21 and rear end plate 22, front end plate 21, rear end plate 22 and side plate 23 enclose cavity 24, wind wheel 3 is arranged in the cavity 24, the cover plate 11 is provided with a slit 110, the side plate 12 is provided with an opening 120, the front end plate 21 is provided with a first air inlet 25, and the side panel 23 is provided with an air outlet 26, so The slit 110, the first air inlet 25, the cavity 24, the air outlet 26 and the opening 120 c...

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PUM

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Abstract

The invention discloses an exhaust fan. The exhaust fan comprises a box and a volute fan. The box comprises a cover plate, a side plate and a bottom plate. A containing cavity is defined by the coverplate, the side plate and the bottom plate. The volute fan comprises a volute, a wind wheel and a motor, and the volute is fixed in the containing cavity of the box and comprises a front end plate, arear end plate and a side panel, wherein a cavity is defined by the front end plate, the rear end plate and the side panel, and the wind wheel is arranged in the cavity. The cover plate is provided with a gap, and an opening is formed in the side plate. The front end plate is provided with a first air inlet. The side panel is provided with an air outlet. The gap, the first air inlet, the cavity, the air outlet and the opening are in communication so that a first ventilation channel can be formed. The rear end plate is provided with a second air inlet. An air flue is formed between the side plate and the side panel. A runner is formed between the rear end plate and the bottom plate. The gap, the air flue, the runner, the second air inlet, the cavity, the air outlet and the opening are in communication so that a second ventilation channel can be formed, one ventilation channel is additionally arranged, the air inlet area is increased, efficiency is improved, and noise is improved.

Description

Technical field: [0001] The invention relates to an exhaust fan. Background technique: [0002] Such as figure 1 and 2 As shown, the existing exhaust fan includes a box body 1a and a volute fan. The box body 1a includes a cover plate, a side plate 11a and a bottom plate 12a. The volute fan includes a volute 2a, a wind wheel 3a and a motor 4a, the volute 2a is fixed in the housing chamber of the box 1a, the volute 2a includes a front end plate 21a, a rear end plate 22a and The side plate 23a that is connected between the front end plate 21a and the rear end plate 22a, the front end plate 21a, the rear end plate 22a and the side plate 23a surround a cavity 24a, the wind wheel 3a is arranged on the inside of the cavity 24a, and the cover plate is provided with The slit, the side plate 11a is provided with an opening, the front end plate 21a is provided with an air inlet 25a, and the side panel 23a is provided with an air outlet, the slit, the air inlet 25a, the cavity 24a, t...

Claims

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Application Information

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IPC IPC(8): F04D25/12F04D29/00F04D29/28F04D29/42F04D29/66
CPCF04D25/12F04D29/002F04D29/281F04D29/4226F04D29/424F04D29/661
Inventor 林炎虎黎健辉王凤琪
Owner ZHONGSHAN BROAD OCEAN
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