What does frequency conversion mean?

Question 1: What is the meaning of inverter air conditioner? To put it simply, the air conditioner automatically adjusts the operating rate according to the temperature difference between the room temperature and the temperature you set. The larger the temperature difference, the higher the operating frequency, cooling or heating. When the room temperature is close to the set temperature, keep running at the lowest frequency (the lower the running frequency, the smaller the power, and the lower the power consumption) to avoid frequent starts of the outdoor compressor and increase the Power consumption. Therefore, the outdoor unit of an inverter air conditioner will not shut down under normal circumstances.

Question 2: What does inverter in home appliances mean? Are you in the city or in the countryside? Is the voltage stable?

If the voltage is stable. Frequency conversion is of no use at all.

If the voltage there is low. Then variable frequency electrical appliances are of some use. Can start.

If you want to buy a frequency converter. There is also an issue of future maintenance to consider. The maintenance fee is much more expensive than ordinary ones.

Question 3: What does DC inverter air conditioner mean? Is it different from ordinary air conditioner? "Inverter air conditioner" uses relatively advanced technology. The voltage is small when starting, and it can operate under low voltage and low temperature conditions. This has a certain improvement effect on the situation in some areas where the air conditioner is difficult to start due to unstable voltage or low indoor temperature in winter. Due to the stepless speed change of the compressor, it can also adapt to the cooling and heating needs of a larger area.

The so-called "variable frequency air conditioner" is a concept derived from comparison with the traditional "fixed frequency air conditioner". As we all know, my country's power grid voltage is 220 volts and 50 Hz. Air conditioners working under these conditions are called "fixed frequency air conditioners". Since the power supply frequency cannot be changed, the compressor speed of the traditional fixed-frequency air conditioner basically remains unchanged. It relies on the constant "starting and stopping" of the compressor to adjust the indoor temperature. When it is turned on and off, it is easy to cause the room temperature to become hot and cold. And consume more power. In contrast, the "variable frequency air conditioner" inverter changes the compressor power supply frequency and adjusts the compressor speed. The purpose of controlling the room temperature is achieved by relying on the speed of the compressor speed. The room temperature fluctuation is small, the power consumption is small, and the comfort is greatly improved. The inverter air conditioner that uses variable frequency control technology can automatically select heating, cooling and dehumidification operation modes according to the ambient temperature, so that the room can quickly reach the required temperature in a short time and operate at low speed and low energy consumption with a small temperature difference. Fluctuation, achieving fast, energy-saving and comfortable temperature control effects.

When the power supply frequency is high and the compressor rotates quickly, the air conditioner has a large cooling (heat) capacity; when the power supply frequency is low, the air conditioner has a small cooling (heat) capacity. This is the so-called "fixed frequency" principle. The core of the inverter air conditioner is its frequency converter. The frequency converter is a high-tech technology that came out in the 1980s. It realizes automatic adjustment of the motor's operating frequency by converting current, changing the fixed grid frequency of 50Hz to 30 to 130Hz. The frequency of changes has completed a new revolution in air conditioning. At the same time, it also makes the power supply voltage range reach 142V to 270V, completely solving the problem of the air conditioner not working properly due to the instability of the power grid voltage. Every time the inverter air conditioner is started to be used, it usually allows the air conditioner to perform heating or cooling at the maximum power and maximum air volume, quickly approaching the set temperature. Since the inverter air conditioner increases the heating capacity at low temperatures by increasing the operating frequency of the compressor, the maximum heating capacity can reach 1.5 times that of air conditioners of the same brand and level, and it can still maintain good heating at low temperatures. Effect. In addition, the general split air conditioner only has four wind speeds for adjustment. When the indoor fan of the inverter air conditioner runs automatically, the speed will change within the 12 wind speed range according to the working frequency of the compressor. Since the speed of the fan is different from the speed of the air conditioner, The capacity coordination is more reasonable, achieving quiet operation with low noise. When the air conditioner operates at high power and quickly approaches the set temperature, the compressor operates at low speed and low energy consumption, maintaining the set temperature with only the required power. This not only stabilizes the temperature, but also avoids the attenuation of life caused by frequent starting and stopping of the compressor, and greatly reduces power consumption, achieving high efficiency and energy saving.

"Inverter air conditioner" adopts relatively advanced technology, with a small voltage when starting, and can be started under low voltage and low temperature conditions. This is not suitable for some areas due to unstable voltage or low indoor temperature in winter. The situation where the air conditioner is difficult to start can be improved to a certain extent. Due to the stepless speed change of the compressor, it can also adapt to the cooling and heating needs of a larger area.

However, the price of "variable frequency air conditioners" is usually about a thousand yuan higher than that of "fixed frequency air conditioners". Therefore, you should also pay attention to the following points when purchasing "variable frequency air conditioners":

1. DC variable frequency energy saving 48% are partial generalizations

Experts from the Chinese Refrigeration Society pointed out that the polarity of the two electrodes of direct current is fixed, the current only flows in one direction, does not alternating, and has no frequency at all. By the way, what about frequency conversion? The so-called "DC variable frequency air conditioners" currently promoted on the market are actually DC speed-adjustable air conditioners, and the DC speed-adjusting technology they use is far superior to frequency modulation technology. But in order to make full use of people's thinking patterns, marketers put the original frequency conversion hat on it without thinking, which made a joke.

According to reports, DC speed regulation only undergoes one voltage conversion, so the energy loss is smaller than that of frequency modulation speed regulation.

In addition, because the rotor of this DC motor is permanent magnet, it saves the rotor current consumption of the three-phase AC asynchronous motor. Therefore, its electrical efficiency from the grid power supply to the motor is higher than that of the frequency modulation motor. The speed regulation mode is high, which saves a certain amount of energy. However, some manufacturers exaggerate the energy saving of the internal adjustment system as the energy saving of the entire machine, so there is a saying that the energy saving is 48%. Experts say that energy saving mainly depends on the design and design of the refrigeration system... >>

Question 4: What does DC frequency conversion mean? The current air-conditioning market is divided into DC frequency conversion and AC frequency conversion, and even There is 1Hz frequency conversion. These are all promotion methods of home appliance manufacturers.

From a technical point of view, the working process of any frequency converter is AC 50Hz-->>DC-->>AC with adjustable frequency. There are both DC and AC in the whole process. Therefore, using DC and AC as the attributive of frequency conversion often makes people confused.

Usually frequency converter refers to industrial frequency converter. It drives an AC asynchronous motor. Also called squirrel cage motor, it has the advantages of simple structure and low cost. It was also the most commonly used motor in early air conditioners and refrigerators.

The concept of frequency conversion in home appliances is not directly equivalent to the frequency converter in industry. Because there are two types of home appliance motors: AC asynchronous motors and DC brushless motors. Therefore, the frequency converters on home appliances are divided into DC and AC. Therefore, manufacturers call them DC frequency conversion and AC frequency conversion.

Brushless DC motor is a new type of motor that has emerged in the past ten years and belongs to the category of synchronous motors. It has the characteristics of small size and high efficiency. Although the brushless DC motor is called DC, the current in the armature is indeed AC. Because the speed regulator and the motor are considered as a whole in the industry, the motor does not have brushes for commutation, and the input at the front end of the speed regulator is DC. So it is called brushless DC motor. This type of motor is also used in electric bicycles and electric cars.

The device that drives brushless DC motors in home appliances is not called a frequency converter, but is called a speed regulator or controller. But whether it is an AC frequency converter or a DC brushless controller, the core principle is frequency conversion technology.

So whether it is DC variable frequency or AC variable frequency depends on the type of motor it drives.

I hope it can help you, please adopt it if you are satisfied. Thanks!

Question 5: What does inverter air conditioner mean? The variable frequency air conditioner is based on the ordinary air conditioner and uses a special variable frequency compressor and adds a variable frequency control system. Its basic structure and refrigeration principle are exactly the same as ordinary air conditioners. The main unit of the inverter air conditioner automatically and continuously changes speed. It can automatically provide the required amount of cooling (heat) according to the room conditions. When the indoor temperature reaches the desired value, the main unit of the air conditioner operates at a constant speed that can accurately maintain this temperature. , to achieve "non-stop operation" to ensure the stability of the ambient temperature.

Question 6: What does HP mean in the frequency converter? 1HP is approximately equal to 0.75KW

Question 7: What does the frequency converter eocd mean? A type of frequency converter

Question 8: What is a variable frequency washing machine? Variable frequency washing machine products have the characteristics of energy saving, ultra-low noise, variable water flow, high dehydration speed, etc. The biggest feature is low noise. Since the speed of the inverter washing machine can be appropriately adjusted according to the weight of the clothes, it can effectively slow down the sound and vibration, and it is also very efficient in terms of water and energy saving