A fixed blade type low wind resistance windpipe rain cover

A technology for fixing blades and blades, applied in the directions of heating and ventilation hoods/covers, etc., can solve the problems of complex rain hood structure, increased wind resistance of air duct outlet, and high use cost, and achieves simple overall structure, large outlet area, The effect of enhancing stability

Active Publication Date: 2017-10-31
BEIJING QIJIAYIJU TECHNOLOLGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing air duct rain cover directly uses an umbrella-type conical structure to cover the ventilation duct. This rain cover reduces the area of ​​the air outlet, increases the wind resistance of the air outlet of the air duct, and limits the air outlet of the air duct. The speed and ventilation efficiency are greatly affected; or the rotation of the blades is controlled by an external motor, the blades are opened when ventilation is needed, and the blades are closed when ventilation is not needed or when there is rain. This kind of rain cover structure is relatively complicated and the cost of use is relatively high. High, and can not be ventilated in real time

Method used

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  • A fixed blade type low wind resistance windpipe rain cover
  • A fixed blade type low wind resistance windpipe rain cover
  • A fixed blade type low wind resistance windpipe rain cover

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Embodiment Construction

[0011] Such as figure 1 As shown, a fixed blade type low wind resistance air duct rain cover of the present invention includes a bracket 1, and the bracket 1 is installed in the middle part of the inner side of the air duct 4, such as figure 1 with figure 2 As shown, a circular top cover 5 is installed above the bracket 1, and several same fan-shaped blades 2 are evenly installed on the top cover 5. Such as figure 1 As shown, the blade 2 is arranged obliquely downward from its root to the outer edge, and at the same time, as figure 2 As shown, the fan surface of the blade 2 rotates along its axis of symmetry and tilts at a certain angle, and the angle of inclination is less than 45°, and as figure 2 with image 3 As shown, the edge of the blade 2 on the lower side is turned up to form a drainage groove 6 . The projections of adjacent blades 2 in the vertical direction partially overlap to ensure that the higher side of the blade 2 can cover the lower side of its adjace...

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PUM

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Abstract

The invention relates to a fixed blade type low wind resistance windpipe rain cover, which relates to a rainproof device for shielding rain, snow and other foreign objects for an exhaust pipe or an air inlet. The purpose of the utility model is to provide a fixed-blade low-wind-resistance windpipe rain cover with simple structure, low wind resistance, high ventilation efficiency and good rain-shielding effect. A fixed-blade type low-drag air duct rain cover of the present invention includes a bracket, the bracket is installed in the middle of the inside of the air duct, and a top cover is installed above the bracket, and several identical blades are evenly installed on the top cover. The blades are inclined downward from the root to the outer edge, and the blades are rotated and inclined at a certain angle along their symmetry axis, and the edge of the blade on the lower side is folded upwards to form a drainage groove. The projection of adjacent blades in the vertical direction has A part overlaps, and the ring-shaped rain shield is arranged on the outside of the blades, and is respectively connected with the outer edge of each blade.

Description

technical field [0001] The invention relates to a rainproof device, in particular to a fixed-blade low-resistance windpipe rain cover for shielding an exhaust pipe or an air inlet from rain, snow and other foreign objects. Background technique [0002] In addition to relying on doors and windows for natural ventilation, current buildings sometimes need to be ventilated without power by adding ventilation ducts on the top of the building. To reduce the resistance of ventilation, the ventilation ducts are usually set up vertically. In order to prevent dust, rain and other impurities from entering the room through the ventilation ducts, it is necessary to install a rain cover above the ventilation ducts to prevent dust and rainwater from entering the room. effect. The existing air duct rain cover directly uses an umbrella-type conical structure to cover the ventilation duct. This rain cover reduces the area of ​​the air outlet, increases the wind resistance of the air outlet o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F13/20
Inventor 查激星
Owner BEIJING QIJIAYIJU TECHNOLOLGY CO LTD
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