Traditional Culture Encyclopedia - Traditional culture - Is there an exhaust fan that doesn't use electricity?
Is there an exhaust fan that doesn't use electricity?
Market commodity name: unpowered wind ball
The roof * * * uses the exhaust pipe to drive the exhaust balloon, and there is no power. It has a louver-shaped fan blade sphere. Its spherical top has a spherical top in the shape of an inverted pot bottom. The blades of the spherical louver fan are stainless steel blades.
? Balloon rotates naturally under the action of updraft in indoor air duct and external wind. Smoke can be discharged from the inclined gap of louver blades.
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