Incredible, a fan costs more than 3,000 pieces! A few days ago to go to a friend's house, the wind blown by his electric fan is very comfortable, as if in nature, the breeze is gentle, the breeze is blowing. Looking at the appearance of the workmanship is also very exquisite, I thought how to get 200 pieces. Ask a friend for verification, the price is more than 3,000 pieces, shocked off the chin, before the fans are to buy electrical appliances to send, not easy to use, but at least the wind is quite big, very good. How could an ordinary person think that the price of an electric fan is more expensive than an air conditioner? Is it gold plated? Times are progressing so fast? After coming back, I checked the information about the electric fan, opened a new world, the original fan is also divided into three, six and nine, etc., maybe we have been using the wrong fan. Next, it is a serious science popularization, without emotion.
More than 3000 fans
Now most people use the electric fan has a big problem, do not blow to people, no sense of wind, naturally can not cool down, blowing on people, easy to blow people away, summer often see news reports by the electric fan blowing oblique mouth, commonly known as stroke, now think of it, the mind is still their oh mouth angry look. This kind of electric fan that can blow people away is called the first generation of electric fans, and now we have a list of fans and how they perform.
The first generation of electric fans, AC motor fans.
AC motor fan
Many brothers see this electric fan and conclude that their fan is not an AC motor fan, and they are happy in their hearts, my family is a beautiful kind, just change the shell, or a familiar formula. This kind of electric fan has several obvious shortcomings, one by one, the energy-saving attack rate reaches about 60 watts, the wind speed gear is relatively small, the wind is large and hard, the sleeping dares to blow are heroes, the noise disturber also has a shaking, right? However, there are also advantages, cheap, high school bought a clinker rabbit modeling fan only 20 yuan, now dozens of dollars can still buy a good. Other shortcomings we can endure, not energy saving is absolutely impossible, so the DC motor fan appeared.
The second generation of electric fans, DC motor fans.
DC motor fan
At present, 90% of the fans on the e-commerce platform belong to the DC motor fans, why? Because of incense. Analyze why incense from several aspects. 1. The appearance is good-looking, the DC motor is relatively small, the shape design has no limitations, and it is easy to win the Red Dot Award, each of which is a net red electric fan. 2. Very quiet, the best low-range wind speed is only a few points of shells, equivalent to the sound of falling leaves, the fast gear is not more than about 50 decibels. What more bikes do you want? 3. Stepless speed change, how to blow how to blow, but many brands for convenience also set the gear, can not achieve stepless speed change. 4. Long service life, from black hair blowing to white hair should not be a big problem. 5. The wind is comfortable, the motor motor wins by speed, and the wind sent out has no sense of slapping, which is very soft. 6. Environmental protection and energy saving, low-grade wind speed power is only a few watts, equivalent to energy-saving bulbs, fast gear is only about 20 watts, mother will no longer shout novels You go out and do not turn off the fan. You tell your mother that the minimum day is only a few cents, and the electricity bill is only a few dollars a year. It's easy to achieve freedom of the wind, as free as the wind. So let's do the closed-eye party blindly choose the DC motor fan on the line? Non also.
DC motor fans are divided into brushed DC motor fans, brushless DC motor fans, and inverter brushless DC motor fans. Many people are dizzy again, how can there be so many classifications? How to choose?
Brushed DC motors have basically been eliminated, and the biggest disadvantage is that brush motors are easy to break, with carbon brushes, and unstable performance. There are also merchants in the market that use it because it is cheap.
Brushed motor works
Brushless DC motor is an upgraded version, faster speed, stable performance, more energy saving, inside the need for a circuit board to control the current trend, so the cost is also higher. The wings of the DJI drone are equipped with brushless motors, as are Dyson hair dryers.
Brushless motor
From the structure, it can be seen that the brushed rotor is with a line, the rotor is relatively large, the brushless rotor does not have a line, and the rotor is relatively small. Brushless performance in all aspects is of course better.
At present, many brands are under the slogan of variable frequency motors, is it IQ tax? In a word, the electricity saved by the inverter motor is not enough for its premium, there is no need to choose, if the premium is not high or there is no premium, it can be considered.
By the way, the Chinese motor is good, but the Japanese motor performance is better, and there are two brands of fans with Japanese motors, one is a Japanese local brand, and the premium is high. The other is a small brand of domestic small factories, which is difficult to say in a word, and the premium is also quite high. Domestic first-line brands generally do not use it, unfortunately.
After rolling the motor, roll the blades again.
Do you think it's okay to choose a brushless DC motor fan? You also have to consider the number of blades. Some merchants look at other brands to do 15 pieces, he does 25 pieces, another brand directly engages in 35 pieces, is the more blades the better? Definitely not, the blades are less windy and hard, more wind and too small, must be just right.
At present, it is divided into green wind blades, bionic blades, ordinary blades, propeller blades and so on
Green wind leaves
Ordinary leaves are generally more than 5 pieces, more than 100 yuan, relatively cheap, and the air volume is relatively large. Bionic leaves, imitating the wings of birds, very silent, originated from Japanese fans, there are many brands in China to do this kind of leaves, the number of leaves is about 8. Propeller blades, the number of blades is small, less than 5, the wind is large, the noise is also large, mainly used for large space air circulation. There is also a double-layer blade, commonly known as the green wind, the more than 3,000 fans mentioned at the beginning of the article are made of green wind blades, the fan name is Green fan, which translates to green wind. Bamuda started, the price hit the bottom of the heart, our brand salute, the price is much cheaper. The wind in both directions is scattered in front of the wind leaves, and the wind feels very comfortable, and the breeze is blowing. The number of blades is about 15 pieces, more wind is small, less wind sense is hard, about 15 pieces is just right, there are some brands in order to bo eyeballs, engage in more than 20 pieces, not only will reduce the speed, the wind is also small, more than worth the loss. The fan of this blade is more expensive than ordinary blades, is it a tribute to Bamuda? If you want to be cheap and comfortable, there are also ways to buy a green wind blade, install it on the fan, twenty or thirty dollars to get it done, fool installation.
Green wind works
After rolling the blades, rewind the function.
Brands are always profit-seeking, they can always come up with some features to make you hesitate, and finally let you pay for the price, such as negative ion fans, plasma sterilization fans, in addition to formaldehyde fans. Is it necessary?
Negative ions have been confirmed to be good things, inhaling a certain concentration of negative ions can cancel out the positive ions in the body, natural spirit, sleep is stable, a day after tomorrow, but also in addition to formaldehyde to remove smog, the principle is almost the same, are positive and negative attraction. Around the waterfalls, there are still a lot of negative ions in the forest after the rain. But the concentration of negative ions released by the electric fan, completely can not meet the requirements, as if you want to rely on a rice to eat a full stomach is impossible, IQ tax is undoubted, if you really want negative ions full house, buy a negative ion generator, about 5000 pieces, anyway you are not bad money.
Plasma sterilization is even more unnecessary, not to mention whether it is useful or not, thousands of bacteria in the air have coexisted peacefully with humans for thousands of years, but today they want to kill them all? Cruel!
In addition to formaldehyde fan a small part of the useful, for example, the picture of this Emmett fan, is equivalent to the purifier added a fan, why not buy a purifier and a fan? Full of question marks. Most of the others like fans but claim that the removal of formaldehyde is a IQ tax, can not achieve the effect of purification, even harmful, not alarmist, with the formaldehyde fan, peace of mind to sleep in the new house, the consequences are unimaginable, the best way to remove formaldehyde is ventilation, other effects are not ideal.
In addition to formaldehyde fans
See here should know what fan to choose, right?
To sum up, the living room or large space place to buy a loop fan, there are old people and children or sleep to buy a green wind fan, want to be extremely silent, choose a first-line big brand or a Japanese brand, the motor can choose brushless DC, other additional functions as far as possible do not choose, local tycoons ignore.
See here should know the choice, right? But you'll still step on the pit. The next article introduces the fan brand, you know a lot, still will step on the pit, the brand is always smarter than the guests.