Although now there is an air conditioner, there is an air conditioning fan, but the fan is still an indispensable appliance for every family, and now we are shopping for electrical appliances are wanting to be quiet, so the question comes, what brand of electric fan quiet? I believe that there are many people want to understand, here we come to say for you what brand of electric fan quiet and quiet fan shopping tips.
First, what brand of electric fan mute
1, Pioneer Pioneer (China, the top ten brands of electric fans, Zhejiang, Pioneer Electronics (China) Investment Co. Ltd)
3, Lianchuang LIAN (China, a line of brands / brands, the top ten brands of electric fans, Shenzhen Lianchuang Science and Technology Group Co.)
4, Haier Haier (Asia's top 500 brands, China, China's Famous Trademarks, the top ten brands of electric fans, the Haier Group of companies)
5, Fuji Bao (a line of brands / brands. Guangdong products, the top ten brands of electric fans, Foshan City, Fuji Bao Electrical Appliance Technology Co.
Second, silent fan buying skills
1, determine the quality of the plastic parts
The appearance of the silent fan color, choose the white color, it must be injection molded out of the white, not oil sprayed white, when purchasing Can be judged by observing the product inside and outside the color is consistent. Because white products must be produced with raw materials, and spray color products can be used second-hand material (scrap) to produce, and then sprayed with color to cover the poor quality of plastic products. The market more than 100 silent fan is mostly sprayed color, this point we can go to test. This method can also be used to buy other pigmented products. Plastic raw materials than the second-hand material is about twice as expensive. 2, to determine whether the brushless motor or brushed motor
Check the wind out of the gap edge of the black powder, pay attention to be sure to see whether it is black, if the edge of the black powder, indicating that the manufacturer used a carbon brush motor to produce silent fan, and carbon brush silent fan in the process of running the carbon brushes will continue to wear out the carbon brushes, but also the black powder blowing out.
This brush motor life is generally less than 2000, that is to say, if you use 10 every day, half a year or so the motor is scrapped. A truly silent fan should use a brushless motor, which requires a digital control chip to drive, and has no life expectancy. If you can disassemble the machine to check, there is no driver board (not the control board for switching, adjusting wind speed, remote head, etc.), the product must be using a brushed motor.
A true silent fan has a larger driver board, a control board for switches and other functions. Brushless motors are about twice as expensive as brushed motors. And a sine wave driver board for a brushless motor costs about $50, which means that just the motor and driver board, brushless is about $70 more expensive than brushed.
3, check whether there is a flour flavor
Adjust the mute fan to the wind speed, with the nose to smell the wind blowing out, whether there is a stench (carbon powder flavor), if there is a smell must be brushed motor, we can not be fooled.
4, check whether there is high-frequency noise
Adjust the wind speed of the silent fan, close to the ear of the air inlet, listen carefully to the sound, if there is a clear motor sound (high-frequency sound), the fan is not a sinusoidal drive board, but a square wave, the quality is not up to standard, and the longer the use of the time, the louder the sound will be.
The above is today to give you an introduction to what brand of electric fan quiet and silent fan purchase skills of the whole knowledge, the above to give you a few brands are very good, you can refer to reference, at the same time, when you buy, be sure to learn more about it, can not have a little sloppy.