Fresh air purification system for classroom

Abstract

The invention discloses a fresh air purification system for a classroom. The fresh air purification system comprises a fresh air device and an air return pipe, wherein the fresh air device is arranged above a rear door of the classroom and communicated with the outside and filters outdoor air through a first filtering unit arranged on the fresh air device to form fresh air, and the fresh air is injected into a room through air outlets; one end of the air return pipe is connected to the fresh air device, the other end of the air return pipe extends to the wall corner on one side of a blackboard along the inner wall of the classroom and downwards extends to the lower portion of the wall where the blackboard is located to form an air return opening, and indoor returned air enters an air return pipe through the air return opening and discharged out of the room through exhaust openings in the tail end of the air return pipe. According to the fresh air purification system for the classroom, the air outlets and the air return opening are formed in different positions of the classroom according to the use situation of the classroom, therefore air inlet is separated from air outlet, and indoor air can be purified more thoroughly.

Description

technical field [0001] The invention relates to an air purification system. More specifically, the present invention relates to a fresh air purification system for classrooms. Background technique [0002] my country's air pollution has evolved from soot-type pollution in the last century to regional and complex air pollution, and has become the region with the most serious aerosol pollution in the world. Finally, the average annual concentration of PM2.5 has exceeded 70μg / m 3 , more than 2 times higher than the national standard and more than 7 times higher than the WHO guidance value. [0003] The smog and dust in the air, coupled with the environmental pollution caused by interior decoration, has become a social problem. These polluting gases have been scientifically proven to have a great impact on the human body, and can easily lead to respiratory diseases, cancer, Leukemia and neurological diseases are especially harmful to pregnant women, children and the elderly. ...

AI Technical Summary

Problems solved by technology

[0004] Existing indoor purification mostly uses special purifiers. This type of purifier often radiates around the center of the location. The purification range is limited and the purification is uneven. The main performance is that the air purification effect is good near the purifier, and the distance away from the purifier is poor. Poor purification effect

As the air pollution becomes more and more serious, there are many people in the public building area with a large space. It is difficult to meet the internal air purification needs only by opening windows for ventilation or purifiers, and the purification system has become a research hotspot.

[0005] The classroom is a public area used for teaching, which often accommodates more students, and when teaching activities are carried out in the classroom, dust pollution is also a prominent feature. The existing air outlet and first air inlet of the purification system are usually set in the For one thing, the fresh air blown into the room may flow out from the air outlet without indoor circulation, the purification efficiency is low, and the air far away from the air outlet is difficult to be purified, so it is not suitable for public areas such as classrooms

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