Air conditioner for controlling indoor PM2.5 pollution and control method thereof

Abstract

The invention relates to an air conditioner for controlling indoor PM2.5 pollution. The air conditioner comprises a first fresh air pipe, a second fresh air pipe, a third fresh air pipe, an air returnpipe, an air supply pipe, an exhaust pipe and a heat recycling device. A PM2.5 concentration inductor is arranged in the first fresh air pipe, and a first primary filter, a first medium-effect filterand a first electric air valve are sequentially arranged in the second fresh air pipe. A second medium-effect filter and a second electric air valve are sequentially arranged in the third fresh air pipe, and the PM2.5 concentration inductor, the first electric air valve and the second electric air valve are in interlocking control. A second primary filter, an air return fan, an air return valve and an exhaust valve are sequentially arranged in the air return pipe. A heat exchanger and a double-speed blower are sequentially arranged in the air supply pipe. According to the air conditioner, thesizes of the needed fan and filters and the equipment size can be configured according to different building types, and operation control is convenient.

Description

Technical field [0001] The invention relates to the technical field of ventilation and air conditioning, and more specifically, to an air conditioner for controlling indoor PM2.5 pollution and a control method thereof. Background technique [0002] Indoor particulate pollution has attracted increasing attention. Among them, PM2.5 (aerodynamic diameter≤2.5μm) is an important pollutant that affects human health. Because of its small particle size, it can enter deeper into the body; it has a large specific surface area and carries more toxic and harmful substances, which is more harmful to human health. Sex. However, most people spend 70% to 90% of their time indoors. With the increase of outdoor air pollution, the problem of indoor PM2.5 pollution in my country is more serious. [0003] In order to control the indoor temperature during the air-conditioning season, large-scale public buildings are usually equipped with a centralized air-conditioning system, which generally controls ...

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Problems solved by technology

[0004] Chinese patent (publication number is CN103322628B) discloses an air-conditioning box and its operation method for controlling indoor air pollution in smoggy days. The problem of controlling concentration fluctuations; in winter smog days, the device plays a control role in large public buildings such as shopping malls and supermarkets, but in the transition season, indoor pollutants cannot be controlled by using natural ventilation; at the same time, the centralized air-conditioning system cannot use in residential buildings

[0005] Since the outdoor PM2.5 concentration changes in real time during the day, especially in different seasons and different cities, the fluctuation is more obvious; the current centralized air-conditioning system generally controls the PM2.5 concentration by installing air filters, due to the fluctuation of the outdoor PM2.5 concentration , the operation of the air-conditioning system at a fixed working condition fails to solve the indoor PM2.5 pollution control with the change of outdoor concentration; especially for residential buildings, since the split air conditioner cannot be equipped with filters, the indoor pollution is serious, and it is necessary to install additional fresh fans or air purification Due to the increase in equipment and the increase in initial investment and operating costs, this combination control is also unable to control the indoor PM2.5 concentration in real time

In the transitional season, reduce the indoor PM2.5 concentration by opening windows for ventilation. When the outdoor particle concentration is high, the indoor PM2.5 concentration cannot be guaranteed

It can be seen that the current air-conditioning system cannot solve the real-time fluctuations of PM2.5 in different seasons to control the concentration of indoor particulate matter

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