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The principle and function of building negative pressure systems
Release time:
2021-05-14
Building system negative pressure, also known as a unidirectional fresh air system, works by using a high-power motor to forcefully exhaust stale indoor air through an exhaust outlet. This creates a negative pressure environment inside the building. To balance atmospheric pressure, outdoor air is forcefully drawn into the building through window and door gaps or dedicated inlets, creating a complete indoor ventilation system.
So-calledBuilding system negative pressureIt is one of the so-called unidirectional fresh air systems. When working, the polluted air in the room is forcibly discharged through the outlet by a high-power motor, which causes the air pressure in the room to drop, forming a negative pressure environment. In order to balance the atmospheric pressure, the outdoor air will be forced into the room under the action of atmospheric pressure through window gaps or special outlets, thus forming a complete indoor ventilation environment.
Building system negative pressure uses the principle of atmospheric balance to achieve ventilation effects. It is a forced mechanical exhaust device. The polluted air in the room is continuously discharged to the outside by a strong fan, thus forming a negative pressure environment in the room. The host of the negative pressure fresh air system is generally installed in the bathroom or kitchen, because the air quality in these two places is generally poor. The building system negative pressure host first discharges the polluted air from the kitchen and bathroom to the outdoors, and can also discharge the waste gas from each room to the outdoors through pipes. At this time, the outdoor air pressure is greater than the indoor air pressure, so the outdoor air will Enter the room through window gaps. Some users will install wall-mounted air intake valves or window-mounted air intake valves to introduce air into the room after preliminary filtration.
The role of building system negative pressure:
1、Building system negative pressure can continuously discharge the polluted air in the room to the outdoors, introduce fresh outdoor air into the room, and meet the human body's needs for ventilation;
2、Building system negative pressure can complete ventilation without opening windows, avoiding dust and noise pollution caused by opening windows;
3、Continuous ventilation of the building system negative pressure can keep the indoor environment dry, inhibit bacterial growth, and prevent mildew of clothes;
4、Building system negative pressure removes odors from the kitchen and bathroom;
5、Building system negative pressureHarmful gases are emitted after indoor decoration.
Key words:
Building system negative pressure, ventilation equipment
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