Ventilation and smoke discharge device for underground solid garage

Abstract

The invention relates to a ventilation and smoke discharge device for an underground solid garage, which is characterized in that an annular exhaust duct is arranged around each underground parking layer; the annular exhaust duct is provided with parking exhaust outlets corresponding to underground parking stalls; the annular exhaust ducts of all underground parking layers are communicated with one another through underground garage vertical exhaust ducts, and communicated with ground garage exhaust ducts of the ground garages; the top parts of the ground garages are provided with top exhaust ducts connected with the ground garage exhaust ducts; and top exhaust fans are arranged on the top exhaust ducts. In case of a usual working condition, the problem that air quality in the underground solid garage cannot meet the sanitary requirement can be solved by pumping action of exhaust outlets; and operation efficiency of electric equipment in a garage can be improved by ventilation and heat extraction. In case of an accident condition, the ventilation and smoke discharge device can be used for smoke discharge in fire or after fire, smoke can be quickly removed, loss is reduced, and social and economic benefits are obvious. The ventilation and smoke discharge device dislcosed by the invention is convenient to construct, short in period and applicable to large-scale popularization.

Description

technical field [0001] The invention relates to ventilation and smoke exhausting for underground garages, in particular to a ventilation and smoke exhausting device for underground three-dimensional parking garages, and is especially suitable for large-volume, deep-buried underground three-dimensional parking garages. Background technique [0002] With the development of society and economy, cars are gradually popularized in cities. According to statistics, there are 31 cities across the country with more than 1 million cars, including more than 5 million cars in Beijing. Compared with the scarce land resources in cities, parking spaces have become a hot favorite among car owners. Because of this, the underground three-dimensional parking garage that can make full use of the underground space came into being. [0003] The traditional underground three-dimensional parking garage only realizes the ventilation of the underground three-dimensional parking garage through the op...

AI Technical Summary

Problems solved by technology

[0003] The traditional underground three-dimensional parking garage only realizes the ventilation of the underground three-dimensional parking garage through the opening and closing of the car-carrying turntable when parking and picking up the car. Due to the oily smell released by the vehicle and the harmful gas accumulated at the bottom of the underground garage, the traditional The ventilation method cannot meet the hygienic requirements

When inspection and maintenance personnel enter the parking garage, they can only carry the oxygen supply equipment on their backs, which not only increases the baggage, but also makes it inconvenient for inspection and maintenance

In addition, poor ventilation will lead to heat accumulation in the underground three-dimensional parking garage, which will reduce the efficiency of electrical equipment such as transformers and control cabinets. In the long run, it will affect the service life of equipment

[0004] A fire broke out in the underground parking garage. According to the traditional method, the closed gas fire extinguishing method is adopted. However, this fire extinguishing method cannot effectively prevent the rapid diffusion of high-temperature smoke, and the risk of an overall explosion in the underground parking garage increases.

In addition, post-disaster smoke exhaust has become another problem under accident conditions. Traditional natural smoke exhaust methods cannot ensure the rapid restoration of underground parking garages.

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