Intelligent fresh and return air volume adjusting type air purifier

Abstract

The invention relates to an intelligent fresh and return air volume adjusting type air purifier. The intelligent fresh and return air volume adjusting type air purifier comprises a box, a fresh and return air heat exchanger, an exhaust fan, an air feeder, a controller, a primary filter and an efficient filter. The box is provided with an outdoor exhaust port, an outdoor fresh air port, an indoor air feeding port and an indoor exhaust port. The outdoor fresh air port communicates with the indoor air feeding port through an air inlet channel. The indoor exhaust port communicates with the outdoor exhaust port through an exhaust pipeline. The air inlet channel and an exhaust channel are arranged in a crossed isolation manner, and the fresh and return air heat exchanger is arranged at the intersection position of the air inlet channel and the exhaust channel. According to the signals of indoor and outdoor PM2.5 concentration, indoor CO2 concentration, the air feeding temperature, the fresh air temperature, the indoor and outdoor pressure difference and the like, a controller is used for intelligent comparison and selection, and optimized running of five work conditions of all fresh air, all return air, the minimum fresh air ratio, the minimum return air ratio and fresh and return air mixed adjustment is achieved. The indoor air exchange requirement and the air quality are guaranteed, meanwhile, the dust filtering and containing amount of all levels of filters is reduced, air treatment energy consumption is reduced, and the air feeding comfort degree is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a new air purifier with intelligent adjustment of return air volume. Background technique [0002] Particulate matter is the main pollutant that affects indoor air quality. Since 2013, the impact of the "smog" phenomenon caused by PM2.5 has intensified. In order to reduce the harm of indoor air pollution to the human body, many people choose air purifiers to ensure air quality, but ordinary air purifiers can only achieve indoor circulating air filtration, and no fresh air supply will reduce the indoor oxygen content and affect their health; If the windows are opened for ventilation, the outdoor air with a higher dust content will enter, destroying the cleanliness of the indoor air. However, if you choose a conventional fresh air system, it can ensure sufficient oxygen supply and indoor ventilation requirements, and at the same time maintain a positi...

AI Technical Summary

Problems solved by technology

The defects of this air purifier are: 1. There is no real-time monitoring and control of the outdoor PM2.5 concentration

In recent years, the frequency of outdoor fresh air PM2.5 concentration is not up to standard is getting higher and higher, only through indoor CO 2 It is unreasonable to realize the opening and closing of the fresh air channel by using high concentration, which may sometimes cause the deterioration of indoor air quality and increase the burden on the filter screen; 2. It does not have the heat exchange function of fresh air and return air, and does not consider the fresh air when the outdoor temperature is too high or too low The impact on comfort may lead to poor human comfort and high energy consumption; 3. The function of intelligent adjustment of fresh air and return air volume mixed air volume cannot be realized

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