In today's society, all kinds of things are changing. A small electric fan has been updated many times, but its usage in life is increasing, and its improvement has brought people's lives. For the convenience, especially the DC variable frequency electric fan, how much do you know about it? The following editor will introduce to you what is a DC frequency fan? What is the relevant knowledge of DC frequency fans?
Every summer, electric fans become a necessity for every household. Most of the people who pay most attention when purchasing fans are wind power and mute effect. These two points can basically be distinguished by personal experience. But now there are more and more fans featuring "DC variable frequency" on the market, which are several times more expensive than "AC variable frequency fans", which undoubtedly makes our purchase more difficult. Many people do not understand DC variable frequency. What does it mean, and what advantages does it have over AC inverter fans?
Definition 1. The so-called frequency conversion is to change the power supply frequency. The fixed grid frequency of 50Hz is changed to the variable frequency of 30-130 Hz through the frequency converter, and the adaptable range of the power supply voltage reaches 142-270V, so as to solve the problem of unstable grid voltage. Problems affecting the operation of electrical appliances.
2. At present, the "DC inverter" and "AC inverter" promoted by merchants in the air conditioner and fan market are actually just a gimmick. The work flow of frequency conversion technology is to convert 50Hz alternating current (AC) into direct current (DC) and then into 30-130 Hz frequency-adjustable alternating current (AC). There is no simple DC frequency conversion and AC frequency conversion.
3. The "DC frequency conversion" and "AC frequency conversion" claimed by the merchants are actually different frequency converters. There are two types of frequency converters for home appliance motors: DC brushless motors and AC asynchronous motors. "DC frequency conversion" corresponds to For brushless DC motors, "AC frequency conversion" corresponds to AC asynchronous motors. The advantages of "DC frequency conversion" The advantages of "DC frequency conversion" (that is, brushless DC motors) are mainly divided into the following aspects: never wear, low failure rate, and brushed DC motors are changed by carbon brushes, slip rings and commutators. In the current direction, sparks and carbon powder generated by carbon brushes, slip rings and commutators when the motor rotates will cause bearing wear.
The brushless DC motor changes the direction of the current through electronic commutation, which never wears and has a low failure rate. Long service life The service life is several times higher than that of DC brushed motors. The continuous working life of a brushed fan is several hundred to more than one thousand hours, and the continuous working life of a brushless fan is generally measured in ten thousand hours. Energy-saving DC brushless DC motor frequency conversion saves 10%-15% energy than AC asynchronous motor frequency conversion.
Small size, light weight, high output DC brush motor is used in the fan, the large output efficiency can provide large wind power, and the stepless speed regulation does not have the frustration of shifting gears, the transmission efficiency is high, the acceleration is fast, and the speed regulation range wide. Low noise and less vibration. Generally speaking, "DC variable frequency" (DC brushless motor) fans have larger wind power, quieter, more energy-saving and longer service life than "AC variable frequency" (AC asynchronous motor) fans~
What is a DC frequency fan through Xiaobian? A comprehensive analysis of the knowledge of the DC frequency fan, we have a general understanding of the DC frequency fan, in fact, it is a design of the electric fan, which makes our life more convenient, so if you buy it, first of all Let's have a proper understanding of the basic knowledge of , I hope the introduction of the editor can help everyone.
