When purchasing electric fans in the store, you should pay more attention to the motor heating problem. The hotter the motor, the greater the internal loss or the poor heat dissipation ability. You also need to pay attention to whether the minimum wind speed is small enough and whether the noise can be accepted. Whether it has a remote control function, the remote control can easily control the electric fan. It is best to choose a model with a remote control for home use.
How to choose a powerful and easy-to-use electric fan? Classification of
electric fan:
1. The rotary blade fan has a smaller motor and almost does not protrude after being connected to the fan blade. The overall fan is only slightly larger than the fan blade. The wind direction is adjusted by rotating the mesh cover in front of the fan blade, which is easy to move, but because the motor is smaller, the air volume is also smaller.
2. Floor-standing fan
Floor-standing fan is the most common electric fan. The bottom is fixed by the base, the support rod is lifted, and then connected to the motor and the fan blade. This fan has sufficient wind power, is suitable for larger rooms, has a large steering angle, and takes care of as much space as possible. The disadvantage is that the gap between the mesh cover is large, which can easily hurt children.
3. Tower fan
Tower fan rotates through the internal wind wheel, and releases the wind through the optical flow fan to form an airflow. It is similar to the principle of an air conditioner internal unit. Its advantage is that it occupies a small area and has a fashionable appearance, but its air volume is average, making it suitable for use in small apartments. The noise is a little loud and it is difficult to clean up the dust. Since most tower fans are not very high and cannot adjust the up and down angles, the wind direction is relatively low and legs are often blown.
4. Air conditioning fan
Air conditioning fan, also known as a cooling fan, has nothing to do with air conditioning and does not have a compressor for cooling. The air conditioner fan sucks air through the motor and releases after cooling. It is usually cooled with water or ice crystals. The air discharged is slightly lower than that of an ordinary fan, but it has basically no effect on the temperature in the house. Therefore, only when the air conditioner fan is blown directly on the body can you feel cooler than the ordinary fan. However, due to the use of water for cooling, the cool air blown is humid, and it is very easy to get rheumatism after long-term blowing. If it is a humid climate in the south, it will become more and more humid. So there are two sentences to describe an air conditioner fan, &ldquo: If you hate him, give him an air conditioner fan ” &ldquo: You can buy an air conditioner, and an electric fan, but you can't buy an air conditioner and an electric fan together. What's more harsh is that someone once wanted to use an air conditioner fan as a cheap humidifier.
5. Bladeless fan
Bladeless fan was originally invented by DYSON and was named because it has no fan blades on the outside. In fact, below is a turbofan sucking air into the hollow ring, and the air is supplied through the gaps set in the ring. The circular cross-section of the air multiplier adopts a shape similar to the aircraft wing, using the Coanda Effect and the same effect as the lift of the wing to increase air volume. Due to patent issues, except for Dyson, only domestic counterfeit factories are doing it. Most of the counterfeit factories are of poor quality and loud noise. If the air volume school wants to experience a better bladeless fan, it is recommended to choose the genuine Dyson version, but the price is more expensive than low-end air conditioners, which is around 2,000 yuan. Key points for purchasing fans:
1. Number of fan blades
Considering the characteristics of rotational balance, the number of fan blades of electric fans is generally odd, and even blades are prone to resonance when rotating, causing damage. Originally, the electric fans were basically three-blades, but in recent years, there have been many five-blade fans. This is because the more fan blades, the more even the wind is cut and softer. However, the more fan blades, the greater the motor load, so the number of fan blades should not be too large.
2. Fan motor type
Nowadays, most motors use aluminum shells, and copper wires are used for the internal coils. The aluminum shells mainly have high heat dissipation efficiency. Some old fans also use iron shells, but iron is heavier than aluminum, which is not as good as aluminum heat dissipation efficiency.
Nowadays, many electric fan brands are promoting their own motors and giving them some names, such as:
Pioneer Aluminum Nuclear Motor. According to the characteristics of aluminum, it is impossible to become a coil material inside the motor. Moreover, Pioneer’s own promotional materials are often mixed with aluminum core aluminum shells, which is a propaganda slogan that confuses the concept and is no different from ordinary motors.
Mide's MD-SQD motors, in fact, SQD represents Safe, Quiet, and Durable. They are not technical names and are not much different from traditional motors.
Gree 4S high-efficiency motor, similar to SQD motor, represents: Smoothrunning, Soundless, Safe, and Saveenergy, which are also not technical names.
Although there are no obvious technical differences between motors of each brand, large brand motors must be more guaranteed. As long as the materials and workmanship are reliable, no advanced technology is needed to last for 10 years.
3. Pumawick lubricating oil
Pumawick lubricating oil is a fiber solid lubricating oil developed by PERMAWICK, the United States. Its advantages are: high oil content, good oil retention, and can control the oil release rate of the lubricating oil, with a wide temperature resistance range, thereby extending the service life of the motor. Currently, major brands such as Midea, Gree, Emmett, Pioneer, Watson all use Pumawick lubricant fans, and the lubricant only plays an auxiliary role after all, and you don’t need to pay too much attention.
4. Details that need to be paid attention to during purchase and use
When purchasing electric fans in the store, you should pay more attention to the motor heating problem. The hotter the motor, the greater the internal loss or the poor heat dissipation ability. You also need to pay attention to whether the minimum wind speed is small enough and whether the noise can be accepted. Whether it has a remote control function, the remote control can easily control the electric fan. It is best to choose a model with a remote control for home use.
In use, be careful not to block the back of the fan. The fan needs to inhale air to generate air flow.. The warranty of the fan is one year, and there are often problems when you take it out for use in the second year, so it is best to try out whether all functions are normal before the warranty period ends.