"Fantasy" is a kind of unreal phenomenon, but a group of people turned their fantasy into the most creative digital product manufacturer in China. The product with the first fantasy is a creative sound. Later, the Chinese zodiac sound made me more thoroughly understand the fantasy of creating classic and fashion. I'm lucky to be here this time Love to play computer games The trial of the small fan on the trial platform has changed my understanding of the traditional mini fan once again. For the small fans that cost 20 or 30 yuan on the market, the Fantasy Fan is undoubtedly one of their luxuries. It not only has a simple and fashionable appearance, but also uses an ultra quiet brushless motor with adjustable air volume and built-in 1200mAh super capacity battery. It can bring you a sense of coolness at any time and anywhere in this hot summer day. Let's take a closer look at the Fantasy Fan! Thank you again for the trial use of iGo and the product trial provided by the manufacturer.

Unpacking

Like other products, Fantasy Wind small fan is packaged in an environmentally friendly paper box. The product outline drawing and function icon are printed on the front and back of the package. Information such as product introduction and operation instructions are printed on both sides of the package. The seal of the package is a sticker with Fantasy LOGO. The color matching of the whole package is elegant, reflecting the simple style.

Remove the seal and take out the small fan. There is a paper skeleton inside to protect the package from being damaged during transportation. In the package, in addition to the fan, there is also a USB charging line, fancy product pictures, warranty cards and certificates.

appearance

The fan is made of high-quality ABS material, with a casual design style, fashionable appearance and smaller size. There are two buttons on the front. The "+" button is the air volume increase button. Press and hold for 2 seconds to start the machine; The "-" key is the air volume reduction key. Press and hold for 2 seconds to turn off the machine. On the back of the fan is a Micro USB charging connector and charging indicator. The unique creativity of the small fan is that it adopts the design of hand strap, which is convenient to carry, and can also be used more flexibly.

The small fan has a flat bottom because of its integrated design. There is an adjustment bracket hidden at the back of the fuselage, which can realize the adjustment of a certain angle of the fuselage and avoid the impact of direct wind on the body.

use

The small fan is equipped with a 1200mAh lithium battery, which can be used continuously for nearly two hours after being fully charged (the actual measurement has a certain relationship with the air volume), basically meeting the temporary use when going out. When charging the small fan, the indicator is in a slow flashing state, and when the battery is fully charged, the indicator is always on. When the battery is used normally, if the indicator flashes quickly, it means that the battery is low and the fan needs to be charged. At this time, the time to fully charge the battery is about 1.5 hours (measured with a 5V/1A charging head).

The three grade air volume of the small fan can be adjusted according to different requirements in daily use. In the office, it is generally OK to use low-grade (small office has air conditioning). To test the performance of the small fan, turn off the air conditioner, and the predicted temperature is 33 °. Put the fan about 0.5m away from you for use, and the wind is gentle at low gear; The middle air volume is more comfortable; When it is adjusted to the high level, it will be cool and refreshing in an instant with the whistling wind. This distance is not suitable for long-term direct blowing of high-grade air volume. If you want to cool down instantly, high-grade air volume is necessary.

During the use test of small wind fan, it is best to use it at a distance of about 0.5-0.7m from the body (low gear). The wind is gentle and the area of the body blown is also large. When using high grade, the whistling sound of the blades is obvious, and the noise has a certain increase. It is recommended to use a 7-blade ultra silent fan, which can ensure the mute effect of the motor when the air volume is high.

Disassembly

Like other products, Fantasy small fan is mostly connected by snap joint. The shell has only two fixing screws, which are located at the back and both sides of the fan base. The screw hole adopts a plug made of the same material as the shell, and the screw can be removed only after the plug is removed.

Remove the two screws with a screwdriver, and then remove the anti-skid rubber pad under the fan base. When Sun Xiaosheng was disassembled earlier, a screw was hidden here, which made it difficult for me to find it at that time. The fan has no screw here.

After removing the rubber pad, use a crowbar to pry off the housing. If there is no crowbar, you can also use a knife or a thin hard object. If your finger corner is hard enough, you can also insert it from the gap at the bottom and slide it along the housing to pry the fan housing.

After the front and rear housing of the small fan is separated, there is a wire connection in the middle. There is a small circuit board inside the rear housing because of the charging interface and indicator light on the rear cover. Look at the other part. A round lithium battery is located on the base. The small fan adopts a 5-blade fan. For the traditional small fan, three blades are mainly used. Generally, the more blades, the softer the wind from the fan, and the wider the range. At the same time, the cost is much higher than that of the 3-blade fan.

Remove the flat cable plug connected to the rear cover, and the front and rear shells can be completely separated. There are four flat cables on the circuit board of the rear cover. Two cables should be power cables and the other two cables should be indicator cables. There are also two screws on the top of the circuit board that are the fixing screws of the bracket behind the fan, so we don't need to disassemble them here.

Remove the circuit board on the back cover, and you can see that there is only one LED lamp bead and Micro USB charging interface on the front. V3.0 printed on the circuit board is the developed version number.

Here you can see the connection method between the hand strap used by the small fan and the housing by using the hinge shaft made of the same ABS material as the housing. The bracelet is made of leather, with intaglio printing on the outside with a fantasy logo and meaning. This fan is designed by Fantasy Company in English. The handle of the hand strap is particularly soft and comfortable. It should be made of genuine leather.

Continue to disassemble the small fan. This 1200MAh lithium battery, without any words on its appearance, should be specially customized for fantasy. Below the battery is the main control circuit board of the small fan.

Remove the fixing screws of the circuit board to pick up the circuit board. Three quick plugs can be seen on the front of the circuit board, which are the connecting wires of the motor, the battery and the rear case circuit board. The connection of the motor is two wires, and the motor should be 2-wire type. The speed regulation of 2-wire motor generally adopts the voltage regulation and external PWM circuit speed regulation. From the component of small fan, the latter should be adopted, that is, PWM speed regulation. The adjustment of wind speed only needs to change the different frequency of PWM. However, compared with the 4-wire system, the 2-wire system can not obtain the speed feedback of the motor. For the small micro fan, the speed is not required to be precise, so the 2-wire system can save some costs.

The circuit board can be taken out after the above three connectors are unplugged. As for the components of this main control board, the functions of the two film keys have been described previously. The inductance coil marked 100 and the capacitor beside it form an LC filter. The diode SS14 is a Schottky diode, which, together with the three MOS transistors on the right, is an external component for motor speed control. The surface model of the only IC chip on the circuit board has been erased. According to the components, this should be a MCU, that is, a microcontroller, whose main function is to control the motor switch and provide PWM speed control frequency.

Finally, we need to complain that there are obvious burn marks on the upper left corner of the main control line board and the nearby quick plug connector. This is not caused by the high temperature or short circuit of the components, because the fan can be used normally, and no temperature is felt when touching here. It may be caused by external high temperature, such as high temperature of hot air gun. Although this is a trial product, there is no problem with the fan itself, but I hope the manufacturer can control the quality more strictly.

summary

After the in-depth evaluation of the appearance and internal of Fantasy Fan, we have a deeper understanding of Fantasy Fan. In particular, the advantages of small fan in appearance design have been favored by the public, but some problems have also been found in its interior. The summary is as follows:

advantage:

1. The handheld design increases the fashionable flavor of the product, and it is more convenient to carry and use in different occasions;

2. Three speed regulation can meet different requirements;

3. Built in battery design allows you to enjoy cool anywhere at any time;

4. The design of hidden bracket not only ensures the beautiful appearance, but also can realize the adjustment of different angles of the fan.

Disadvantages:

1. It is found that the circuit board has obvious defects, which should be caused by the negligence of quality inspection during production. We hope to strengthen the process management and strictly control the quality;

2. When the fan is in the highest gear, the noise of the blades is obvious;

Suggestion:

To be the best product, the function must be complete. It is suggested that the small fan can be added with rollover protection function. During the actual use, if the small fan overturns and the air duct of the fan is blocked, it will make a lot of noise and increase the load on the motor. Will it affect the motor or control circuit for a long time?

The small fan is a creative fan full of fashion. The current quotation is 79 yuan. For people who like to pursue beauty and enjoyment, the price is completely acceptable. However, in terms of some internal details, it is hoped that the manufacturer will strictly control to prevent defective products from entering the market. Finally, I would like to thank again Aigo for its trial use and manufacturers, and look forward to the birth of a new generation of creative products.