Method and system for purifying indoor fresh air

Abstract

The invention discloses a method and system for purifying indoor fresh air. According to the method, an air inlet fan sucks air filtered by an air filter into a room, an exhaust fan sucks the indoor air out of the room, at least one of the air inlet fan and the exhaust fan is a speed-adjustable fan, the content of indoor pollution gas is detected through a detection component in real time, and when the content of the indoor pollution gas is lower than a preset value, a control component controls the speed-adjustable fan to adjust the room to be in a positive-pressure state; when the content of the indoor pollution gas is higher than the preset value, the control component controls the speed-adjustable fan to adjust the room to be in a negative-pressure state. The system comprises the air filter, the air inlet fan, the exhaust fan, the control component and the detection component, at least one of the air inlet fan and the exhaust fan is the speed-adjustable fan, the control component sends control instructions to the speed-adjustable fan to control the air inlet volume or / and the air exhaust volume according to the detection signals of the detection component, and the difference of indoor pressure and outdoor pressure is adjusted. The method and system are simple in structure, low in cost, easy to achieve and good in purification effect.

Description

technical field [0001] The invention relates to indoor fresh air purification technology, in particular to a purification method and system for indoor fresh air purification. Background technique [0002] At present, many families, factories, workshops, etc. have used the indoor fresh air purification system to provide a clean air environment indoors. The indoor fresh air purification system generally includes an air filter and a fresh air unit. The fresh air unit is equipped with an intake fan and an exhaust fan. The intake fan is used to filter the air filtered by the air filter (PM2.5 concentration is much lower than the air quality The standard value required by the standard, such as: the filtration efficiency of PM2.5 is 98%) is drawn into the room, and the exhaust fan is used to draw the indoor air to the outside to form an air circulation to achieve the purpose of reducing the indoor PM2.5 concentration . [0003] However, judging from the current use effect, after ...

AI Technical Summary

Problems solved by technology

[0003] However, judging from the current use effect, after using this indoor fresh air purification system, although the people in the room feel very comfortable, if you use a special instrument to detect, you will find that there is only PM2 in the room near the fan unit. 5≈10ug / m 3 , while the PM2.5 in other places in the room far exceeds 10ug / m 3 , reached 30 ug / m 3 , so the comprehensive effect of fresh air purification is not ideal

Images