離心風機是根據動能轉換為勢能的原理,濟南排煙罩利用高速旋轉的葉輪將氣體加速,然后減速、改變流向,使動能轉換成勢能(壓力)。

　　The centrifugal fan is based on the principle that kinetic energy is converted to potential energy. The exhaust hood of Ji'nan uses a high-speed rotating impeller to accelerate the gas, and then slows down and changes the flow direction so that the kinetic energy is converted into potential energy (pressure).

　　運送涼風常見的是空調的管道，這種管道需求加保溫材料。螺旋風管可內貼保溫材料，且表面看來漂亮。

　　The most common way to carry cool air is the central air conditioner, which needs thermal insulation. The spiral pipe can be embedded with heat insulation material, and the surface looks beautiful.

　　在單級離心風機中,氣體從軸向進入葉輪,氣體流經葉輪時改變成徑向,然后進入擴壓器。在擴壓器中,氣體改變了流動方向造成減速,這種減速作用將動能轉換成壓力能。壓力增高主要發生在葉輪中,其次發生在擴壓過程。在多級離心風機中,用回流器使氣流進入下一葉輪,產生更高壓力。

　　In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, the gas flows through the impeller, changes into radial, and then enters the diffuser. In a diffuser, the gas changes the direction of the flow, causing a deceleration that converts kinetic energy into pressure energy. Pressure increases mainly in the impeller, followed by the expansion process. In a multistage centrifugal fan, the flow of air into the lower impeller with a reflux device produces higher pressure.

　　排油煙飯店、酒樓、賓館的廚房均有許多油煙發生，需求排出，運用圓形的風管即是油煙囪。而螺旋風管在這里即是充當油煙管。

　　Hotel, restaurant, hotel lampblack kitchen has many smoke, demand for discharge, with circular duct is the chimney smoke. And the spiral cyclone tube is used as the smoke pipe here.

　　負壓風機則整機采用CAD/CAM設計,具有投資成本低,風量大,噪音低,耗能小,運行平穩,壽命長,效率高等特點,百葉窗自動起閉達到防塵,防水,美觀大方;既可吹風,也可抽風,是現代化車間降溫通風的佳選擇。、的負壓風機將成通風降溫設備市場主流。

　　The negative pressure fan is the use of CAD/CAM design, with low cost, large volume, low noise, low energy consumption, stable operation, long service life, high efficiency, automatic shutter shut dustproof, waterproof, elegant appearance; can hair, but also ventilation, is the best choice for modern workshop ventilation cooling. Environmental protection and energy-saving negative pressure fan will be the mainstream of ventilation and cooling equipment market.

　　由于鐵皮容易在各種環境下發生化學反應，造成腐蝕、生銹。而鋅在干燥的空氣中幾乎不發生變化。

　　Because the iron sheet is easy to react in various environments, it causes corrosion and rust. Zinc hardly changes in dry air.

　　在潮濕的空氣中，鋅表面會生成致密的堿式碳酸鋅膜。螺旋風管主要是在風管鐵皮上鍍上一層鋅，對鐵皮起到保護的作用。

　　In the humid air, basic zinc carbonate, zinc surface will generate dense membrane. The spiral air pipe is mainly coated with a layer of zinc on the iron sheet of the wind pipe, and plays a protective role to the iron sheet.

　　采用變頻離心風機時，應以系統計算的總壓力損失為額定風壓，但風機電機功率應在計算值上附加15%~20%。

　　When the centrifugal fan is used, the total pressure loss calculated by the system should be the rated air pressure, but the power of the fan motor should be added 15%~20% on the calculated value.

　　本文的精彩內容來自濟南排煙罩詳細內容請點擊我們的網站:http://m.pvcbox.cn/謝謝您的到來!

　　The exciting content of this article comes from the smoke hood of Ji'nan. Please click on our official website: http://m.pvcbox.cn/, thank you for coming!

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