Underground garage ventilation control system and method based on induced jet technology

Abstract

The invention provides an underground garage ventilation control system and ventilation control method based on the induced jet technology. The system comprises a plurality of air blowers, exhaust blowers and induced blowers. The blowers are arranged at the top of an underground garage on the basis of a preset rule according to the area and building shape of the underground garage, and a pluralityof carbon monoxide concentration sensors are further arranged in the underground garage and transmit detected carbon monoxide concentration changes to all levels of controllers in real time. The workmode of the induced blowers is adjusted in real time according to the carbon monoxide concentration changes so that air in a carbon monoxide enrichment area can be effectively disturbed in time and exhausted to the outside. According to the underground garage ventilation control system and ventilation control method, the direction of airflow jet out of the induced blowers can be adjusted automatically according to monitored carbon monoxide concentration, the state parameters of all the blowers can be intelligently regulated and controlled, and operation cost is reduced under the condition ofensuring good ventilation.

Description

technical field [0001] The invention relates to a ventilation control system for underground garages, in particular to a ventilation control system for underground garages based on induced jet technology. Background technique [0002] The number of cars in our country is increasing year by year, followed by problems between urban parking and land resource occupation. The underground garage solves the tension of parking space with its advantages of large area, saving construction land, and centralized management. However, due to the poor natural ventilation of the underground garage, the cars inside it will generate additional traffic during the process of starting, braking, etc. Harmful gas, the concentration of dangerous substances such as gasoline vapor and carbon monoxide in the air in underground garages is relatively high, and timely ventilation should be adopted to eliminate them to avoid danger. The duct ventilation and exhaust system continuously inject a large amou...

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Problems solved by technology

[0003] Although the above scheme is widely used, its disadvantages and deficiencies are obvious. First, the ventilation system requires a large number of pipes and takes up a lot of space, which reduces the actual use space of the underground garage. In addition, the ventilation system requires Driving work all the year round consumes a lot of energy every moment, which not only causes a large waste of resources, but also increases the maintenance cost of the underground garage;

[0004] For this reason, people of insight have proposed a more space-saving ventilation system based on induced jet technology. The system is equipped with a blower fan, an exhaust fan and an induced fan. The air in the underground garage allows the dirty air to be discharged through the exhaust fan. Since the system does not need to set up ventilation ducts, it occupies a small space and can save the effective space of the underground garage. It has become the primary alternative for new underground garages. However, The existing ventilation system based on induced jet technology also has certain defects and deficiencies, and some problems have not been reasonably solved. There are multiple induction fans arranged on the top of the fan, but how to set up these devices can make it have the best working effect, how to control the direction of the upper jet airflow of the induction fan to take away the dirty air to the greatest extent, how to avoid air short circuit, etc.;

[0005] In addition, regardless of whether it is for a ducted ventilation system or a ductless induced jet ventilation system, under the condition of satisfying the basic ventilation, it is necessary to consider how to reduce energy consumption, avoid resource waste, and change from a rough type to an economical type; Although the induced jet ventilation system of the duct will be calculated and designed before installation, so that the induced fan can take into account almost all spaces, so that every place in the underground garage can be updated in time, but the specific conditions in actual operation There must be some deviation between the situation and the theoretical calculation. Under the condition of human interference, the deviation will be further expanded, so the system also needs to have self-regulation capabilities; for the different levels of harmful gas accumulation in the underground garage. , the current ventilation system does not have a good solution

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