No power hood

Abstract

An automatic rain-proof ventilator, comprising structural supports (1); external protective plates (3) are disposed symmetrically on the two sides of the structural supports (1), and end plates (4) are disposed on the two ends; an air inlet (8) and an air vent (6) are respectively formed at the bottom part and upper end of the structural supports (1); a V-shaped rain baffle (5) is disposed between the structural supports (1) with the two ends respectively leading out by way of the end plates (4); a wind board (7) is hinged at the air vent (6) on the structural supports (1), and can swing with the wind and automatically adjust the opening of the air vent (6). The ventilator has a function of automatically preventing rain back-flow, and has good ventilation effect.

Description

technical field [0001] The invention relates to a natural ventilation device, in particular to a non-powered wind cap. Background technique [0002] As a small single-unit ventilation product, rotating non-powered hoods are mostly used in architectural applications. With the popularity of this product, the product has highlighted various application technical problems. Mainly include: 1. The rotation of the hood gives people the illusion of power ventilation. In fact, the product is still a natural ventilation device that does not shelter from the wind. The ventilation is greatly affected by natural factors. The effective ventilation area of ​​the rotating non-powered hood is small and the ventilation resistance coefficient is large. The ventilation capacity of the product is low; 2. Long-term continuous rotation will inevitably cause motion damage, and the service life is short; 3. The combination of the product and the roof installation often causes leakage; 4. The produc...

AI Technical Summary

Problems solved by technology

Mainly include: 1. The rotation of the hood gives people the illusion of power ventilation. In fact, the product is still a natural ventilation device that does not shelter from the wind. The ventilation is greatly affected by natural factors. The effective ventilation area of ​​the rotating non-powered hood is small and the ventilation resistance coefficient is large. The ventilation capacity of the product is low; 2. Long-term continuous rotation will inevitably cause motion damage, and the service life is short; 3. The combination of the product and the roof installation often causes leakage; 4. The product cannot be closed for heat preservation

[0003] The technical problems of the above-mentioned products lead to insufficient ventilation of many application buildings, and the internal environment of the building cannot meet the ventilation requirements. The movement damage and frequent leakage make the users have to carry out roof renovation, which causes great economic losses to the enterprise.

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