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
CN107795508APending Publication Date: 2018-03-13ZHONGSHAN BROAD OCEAN
0 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
ZHONGSHAN BROAD OCEAN
Publication Date
2018-03-13

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More