Stainless steel fan manufacturer, classroom installation of fresh air system necessity analysis The classroom is the primary occasion for educational activities on campus. After students arrive on campus, 90% of the time is spent in the classroom. Students have been in the classroom environment for a long time. If the classroom air is polluted, they will be exposed to the pollution for a long time, acting as the "human flesh purifier"! Even if the doors and windows are locked in a haze day, the indoor PM5 concentration is still very close to the outdoor haze. In a climate where the outdoor haze is not serious, the indoor PM5 concentration is even several times the outdoor PM5 concentration. Because children bring forth new ideas faster, their breathing rate is higher than that of adults, but their ability to resist diseases is worse than that of adults. Therefore, long-term follow-up studies at home and abroad have found that exposure to high PM5 in a short-term environment will result in children’s lung function. Changes and the incidence of asthma increase; and long-term exposure will induce chronic respiratory diseases in children, which is related to the late childhood death rate caused by respiratory diseases.
Aluminum alloy is a kind of non-ferrous metal structure material widely used in industry, and it has been widely used in automobile machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy in recent years, the demand for aluminum alloy welded structural parts is increasing, and the weldability of aluminum alloy is also in-depth research. The wide application of aluminum alloy has promoted the development of aluminum alloy welding technology, and the development of welding technology has also expanded the application field of aluminum alloy. Therefore, the welding technology of aluminum alloy is becoming a research hotspot.
dust-proof. Avoid opening the window to bring a lot of dust, and effectively filter the outdoor air, and the air entering the room is clean. Reduce noise pollution. No need to endure the turmoil caused by opening windows, making the room quieter and more comfortable. Anti-mildew and odor removal. Exhaust indoor humid and dirty air, eradicate odors, prevent mold and bacteria from growing, and help extend the service life of buildings and furniture. It also has a good energy-saving effect, is green and environmentally friendly, and can replace air at any time within a certain space. This is indeed very good in terms of its role in renewing the air. The technical strengths and characteristics that can be exerted will indeed have different advantages. . In the process of promoting marketing, the choices brought to customers are becoming more and more diversified.
The high-temperature fire-fighting smoke exhaust fan is mainly suitable for high-rise buildings, underground buildings and tunnel drying rooms, etc., for ventilation or high-temperature smoke exhaust. It can operate continuously at 280℃ for more than 30 minutes, and the medium temperature is 100℃. These are the most important conditions for the environment, we must use it reasonably according to the instructions, and then make its functions fully displayed.
The roof fan is installed on the roof for ventilation. Due to the particularity of the installation and use environment, the material and structure of the fan are special. The roof fan is equipped with a device to prevent air backflow after shutdown. Because the fan rotates at a high speed under the action of heat pressure, the wind speed in the air duct increases a lot. The fan reversal is very unfavorable to the motor starting, and may be damaged due to excessive starting current.
As an important fire-fighting component, the smoke exhaust fire damper determines to a certain extent whether the fire can be blocked in the later stage in order to reduce the loss, and the qualified fire damper should be a product with good airtightness, low current consumption, and should be operated flexible. Products that can be used in key applications, so consumers can refer to this standard when buying. With the gradual improvement of people’s safety awareness, the requirements for smoke exhaust and fire dampers are getting higher and higher, and large office buildings, shopping malls and some subways and other buildings are equipped with smoke detectors and automatic alarm systems, which are automatic Favorable conditions provided by the extensive use of smoke exhaust fire dampers.