A clean fresh air system and a clean air method

Abstract

The invention discloses a clean fresh air system which comprises a fresh air channel (1), an air feeding channel (2), an air returning channel (3), an air exhaust channel (4) and a bypass system. The fresh air channel (1) and the air exhaust channel (4) are respectively communicated with the outside of a room. The air returning channel (3) and the air feeding channel (2) are respectively communicated with the inside of the room, an exhaust fan (5) is arranged in the air exhaust channel (4), an air feeder (6) is arranged in the air feeding channel (2), and the collecting area of internal ports of the fresh air channel (1), the air feeding channel (2), the air returning channel (3) and the air exhaust channel (4) is provided with the bypass system. Due to the design of the bypass system and an air valve, heat exchange between fresh air and exhausted air and the backflow function of return air are achieved, high use flexibility and adaptability to environment are achieved, the energy-saving effect is good, and the capacity of filtering impurities is strong.

Description

technical field [0001] The invention belongs to the field of ventilation equipment, and in particular relates to a clean fresh air system and a clean air method. Background technique [0002] At present, a large number of civil buildings in China rely on natural ventilation to achieve indoor ventilation. Some buildings use fresh air systems, but they are limited to the function of ventilation. However, in recent years, due to factors such as motor vehicle exhaust emissions, industrial exhaust emissions, and engineering construction, the air quality outside urban buildings has caused high concentrations of pollution. The role of natural ventilation is no longer to dilute indoor air pollution, but to deteriorate indoor air quality. The existing fresh air system cannot achieve the control and filtering functions of air exchange, and its shortcomings are as follows: [0003] 1) There is no automatic control of air volume and temperature, there is no heat exchange between fresh ...

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Problems solved by technology

[0002] At present, a large number of civil buildings in China rely on natural ventilation to achieve indoor ventilation. Some buildings use fresh air systems, but they are limited to the function of ventilation.

However, in recent years, due to factors such as motor vehicle exhaust emissions, industrial exhaust emissions, and engineering construction, the air quality outside urban buildings has caused high concentrations of pollution. The role of natural ventilation is no longer to dilute indoor air pollution, but to deteriorate indoor air quality.

The existing fresh air system cannot achieve the control and filtering functions of air exchange, and its shortcomings are as follows:

[0003] 1) There is no automatic control of air volume and temperature, there is no heat exchange between fresh air and exhaust air, and the exhaust air cannot flow back into the fresh air. The fresh air and exhaust air lack temperature detection. When the temperature difference between indoor and outdoor is large, continuous air exchange will Breaking the suitable temperature in the room affects the comfort of the room. Other settings are needed to balance the temperature in the room, which increases energy consumption;

[0004] 2) The existing fresh air system does not have a good filtering function, and it is easy for outdoor particulate matter to enter the room during ventilation, which deteriorates the indoor air quality;

[0005] 3) The existing fresh air system does not have the function of sterilization, and it is easy to bring external bacteria into the room

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