6 Inch 150mm Bathroom Window Ventilation Fan

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Packaging Detail:	Bathroom window ventilation fan CTN/QTY:12 pcs MEAS:64.3X22.2X43.7 cm
Delivery Detail:	20-25 days after receive buyer's deposit

Bathroom window ventialtion fan
1)Long life shaed pole motor
2)Material:high quality PP
3)Low noise,energy efficient

Q:The electric fan is moving all the time. Why is there a lot of ash on the leaves? Ash won't fall when you blow it?: When the fan does not rotate, it falls gray.

Q:What is the principle of an automatic fan head swing back and forth?: There is a round at the rear of the fan. At the outer edge of the wheel, the shaft is connected to the frame by means of a connecting piece. The eccentric force produced by the rotation of the wheel acts on the frame and causes the fan to swing the head

Q:When did the electric fan start to appear?: In 1882, a commercial electric fan appeared in the United States for the first time. Household appliances that only two fan blades, is New York's Kaka zurs engine factory Kroll chief technician Hughes Katz Hoy pull invention

Q:What are your misunderstanding blowing ？: Many people like to blow fans for a long time. They feel like they've just cooled off, and they're going to feel like they're still hot. It's not as good as blowing comfortably for a long time. However, a long time to the fan blowing, the body temperature will decrease with the evaporation of large amounts of sweat, easily lead to colds, colds, abdominal pain, diarrhea and other diseases. Generally, it takes half an hour to 1 hours for a hair dryer.

Q:How to do if the electric fan is noisy?: Fan leaves may be dirty or deformed, and the center of gravity of the fan leaves is not in the center, which makes it easy to shake and make noise.

Q:What are the types of electric fans?: According to the structure of the motor can be divided into: a single-phase capacitor type single-phase, three-phase, shaded pole induction, DC and AC / DC series excitation commutator type electric fan.

Q:What is the principle of a vaneless fan?: The base will be a large amount of air from the suction hole at the bottom of the 5.28 gallons per second flow inhalation, then the air is pressurized into the annular inner wall, an impeller inside the edge of the ring in the air circular trajectory jet, change the air flow will cause the air pressure, and ultimately the formation of a cold air flow shares uninterrupted

Q:Why does the fan seem to spin backwards when it spins?: This is the reason that the wheel looks stationary, when the frequency of the fan's rotation is related to the maximum frequency that the human eye can tell

Q:What is the difference between air conditioner speed regulation and electric fan speed regulation?: The difference between them is reflected in the range of speed regulation with a fixed torque load. Two, the motor efficiency is reflected at different speeds. Three, the torque is expressed at different speeds.

Q:Why do most fans only have 3 blades?: The more the fan, the more energy it needs to turn, but the fan is too small and the air output doesn't meet the demand.

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