I. kitchen ventilation
1) for the indoor cooking fume hood (that is, the exhaust air on the indoor wall), the SF axial fan or FA exhaust fan can be selected according to the soot size。
2) for smoke, and smoke through long pipes, and the pipe is bent with the kitchen, strongly recommend the use of centrifugal fan (4-72 centrifugal fan is the most common, 11-62 low noise environmental protection type centrifugal fan is also very practical), this is because of the centrifugal fan pressure is relatively large axial flow fan don't smoke, and through the motor, easier for motor maintenance and change.
Two。 Ventilation in high-grade places。 For the hotel, tea house, coffee bar, chess room, Cara OK hall and other high places is not suitable for conventional ventilation fan。
1) for cabin ventilation, ventilation pipe connecting central ventilation pipe to the room, in both appearance and noise based on the selection of small axial flow fan, small volume, plastic or aluminum appearance, both low noise and high volume.
2) wind and noise requirements more stringent point of view, the wind box is the best choice. The inside of the box is provided with noise proof cotton, and the remarkable effect of noise reduction can be achieved after the central ventilation pipe is externally connected.
3) for indoor air blowing in gymnasium, it is important to choose an industrial fan with large air volume instead of SF type axial fan. This is in terms of appearance and safety.
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