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Why is the negative pressure phenomenon becoming increasingly severe?
Release time:
2021-03-29
Changchun Weicheng Machinery Equipment Co., Ltd. Why is the negative pressure phenomenon becoming increasingly serious? This needs to be discussed from two aspects. Firstly, the current living environment and building construction technology level are gradually improving, especially the window and door technology is becoming increasingly soundproof, airtight, and heat-insulating, which is quite different from the past. Others, such as the wall insulation performance, are also gradually improving, strengthening the airtightness invisibly. Secondly, the popularity of range hoods has become a standard configuration for almost every household, and the same is true for bathroom ventilation. When the windows and doors are closed in spring, autumn, and winter, and the range hood and exhaust fan are turned on, negative pressure will be instantly generated indoors, especially for the several major brands of range hoods such as Boss, Fotile, and Midea, which have under-range hoods, resulting in more negative pressure over 1000pa. So the problem is, the law of conservation of mass tells us that the air sucked out needs to be replenished (atmospheric pressure), so from where does it come in? All gaps leading to the outside are channels, so the doors are difficult to open, sewer odor may back up, the main supplementary airflow will enter the room, causing unpleasant odors inside and potentially spreading viruses, because the sewers are the concentrated sewage, mixing the sewage of a building. Many people are troubled by this and have bought many anti-odor floor drains to solve the problem of sewer odor backflow, but their effect is minimal, which is merely a temporary fix that does not address the root cause. Qianjia Appliances
Changchun Weicheng Machinery Equipment Co., Ltd.
Why is the negative pressure phenomenon becoming increasingly serious?
This needs to be discussed from two aspects. Firstly, the current living environment and building technology level are gradually improving, especially the window and door technology is becoming increasingly soundproof, airtight, and heat-insulating, which is incomparable to the past. Others, such as the wall insulation performance, have also been gradually improved, invisibly strengthening the sealing. Secondly, the popularization of range hoods, which are basically standard equipment for every family, and the bathroom ventilation system are the same. When the windows and doors are closed in spring, autumn, and winter, and the range hood and exhaust fan are turned on, negative pressure will be instantly generated indoors, especially with several major range hood Brands, such as Boss, Fotile, and Midea, whose downdraft range hoods are even worse, reaching more than 1000pa. So, the problem is, the law of conservation of mass tells us that the air sucked out needs to be replenished (atmospheric pressure), from where does it come? All the gaps leading to the outdoors are passages, so doors are difficult to open, sewers will back up foul smells, and the main air replenishment will flow into the room, causing unpleasant odors and the spread of viruses because sewers are concentrated sewage, mixing the wastewater from a building. Many people, unable to bear the trouble, have bought many anti-odor floor drains to solve the problem of sewer backflow, but its effect is negligible, treating the symptom but not the cause.
Qianjia Electric Appliances
Key words:
Changchun Weicheng Machinery Equipment Co., Ltd., Qianjia Electric Appliances
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