Displacement recirculation ventilation method

Abstract

The invention relates to the technical field of dust removal equipment, in particular to a displacement recirculation ventilation method. The main technical scheme is as follows: the polluted gas is discharged from the air supply port after being filtered by the filter cartridge and the heat exchange of the surface cold air from the air inlet on the upper part of the replacement filter ventilation unit, and the clean gas discharged from the air supply port lifts the polluted gas in the factory building upwards Move into the air intake. The polluted gas self-replacing filter and ventilation unit includes a housing in which a filter cartridge and a fan are fixed, the air inlet is arranged at the upper part of the housing, and the air supply outlet is arranged at the lower part of the housing. The invention proposes a displacement recirculation ventilation method, realizes the airflow organization function of displacement air purification ventilation that can only be achieved by a large centralized system, and has low one-time investment and low operating cost.

Description

technical field [0001] The invention relates to a displacement recirculation ventilation method and belongs to the technical field of dust removal equipment. Background technique [0002] With the development of new technologies and processes, dust pollutants have transformed from a large amount of dust in the past to exhaled dust that is more and more difficult to control. Many industrial enterprises produce dense and large amounts of small particle size pollution dust of 0.1μm-2.0μm And aerosols have also brought environmental pollution problems at the boundary of many industrial enterprises and environmental pollution problems in industrial buildings, such as smoke pollution, chemical pollution and other toxic and harmful gas pollution in the factory environment. These pollutions seriously affect and endanger the health of employees, and can lead to various hidden diseases and even life-threatening. The consequences of severe pollution have caused medical burdens and sho...

AI Technical Summary

Problems solved by technology

[0004] Disadvantage: When the emission of pollutants is high, the air change rate cannot be met

[0006] Disadvantages: The accumulation height of exhaled dust aerosol is usually below 6.5m, and the roof ventilation of buildings above 8m cannot solve the lifting and ventilation of exhaled dust pollutants in the work area. For the northern heating area in winter, it also causes a lot of waste of heating energy, and the heating effect cannot be guaranteed , so it cannot be used in winter

[0008] Disadvantages: The huge exhaust system collects and filters the polluted air in each work area, and then sends it to the work area evenly through the huge air supply system. 75% of the fan energy is used to transport the air flow back and forth, resulting in a large amount of energy Consumption, and because the layout of the air duct system is restricted by the structure, there are many blind areas of exhaust and air supply, that is, uncontrollable pollution areas

In addition, centralized control in a large area is more costly for small-scale production or overtime ventilation.

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