Compared with winter, summer is the peak season for air conditioner purchases. But the more anxious you are to buy an air conditioner, the more panicked you are. There is a difference between fixed speed and variable frequency air conditioners. Non-professionals can only listen to the salesman to roughly introduce the difference between fixed speed and variable frequency air conditioners, but they cannot fully understand them. To understand the difference, you should first know the characteristics of fixed-speed air conditioners and inverter air conditioners, and then choose them according to your own needs. As home appliances, air conditioners should be chosen carefully. The following will introduce the difference between fixed speed air conditioners and inverter air conditioners and their advantages and disadvantages.
1 Introduction to Fixed Speed Air Conditioning
Fixed speed air conditioner means that the speed of its internal compressor motor is constant and compressed by switching on and off. machine to adjust the temperature. Inverter air conditioners are variable speed air conditioners, which adjust the temperature by adjusting the speed of the compressor motor to change the amount of refrigerant circulating in the pipeline, thereby changing the cooling capacity.
2 Advantages and disadvantages of fixed speed air conditioners
Advantages
1. The operation is relatively stable and suitable for a variety of environments
2. The price is relatively cheap
Disadvantages
1. With people’s demand for surrounding air temperature, it is easy to cause the constant frequency air conditioner compressor to start and stop frequently, resulting in the fluctuation of indoor temperature larger.
2. Frequent start and stop of the fixed-frequency air conditioner compressor consumes a lot of electricity, and the energy saving is not high.
3. It takes a long time to turn on to the suitable temperature, and it takes a long time for the fixed-frequency air conditioner to reach the set temperature from turning on, which is not conducive to people’s enjoyment.
3 Introduction to Inverter Air Conditioner
Inverter air conditioner is a control system that adds a frequency converter to the structure of conventional air conditioner to control and adjust the speed of the compressor. Make it always in the best speed state, thereby improving the energy efficiency ratio (at least 30% energy saving than conventional air conditioners). The host of the inverter air conditioner is automatically infinitely variable, and it can automatically provide the required amount of cold (heat) according to the room conditions; when the indoor temperature reaches the desired value, the host of the air conditioner runs at a constant speed that can accurately maintain this temperature. To achieve “non-stop operation”, so as to ensure the stability of the ambient temperature.
4 Advantages and disadvantages of inverter air conditioners
Advantages
1. Powerful and rapid cooling and heating: inverter air conditioners have strong high-speed operation capability. Power to run, to achieve rapid cooling, heating effect.
2. High efficiency and energy saving: The inverter air conditioner determines the power according to the required amount, so the efficiency is high. In addition, since the compressor hardly starts/stops repeatedly, excess power is not consumed, so the electricity bill is only about 2/3 of that of a general air conditioner.
3. Accurate room temperature control: The temperature control is accurate and stable, and the room temperature variation range is within +0.5℃, while the fixed frequency air conditioner is around +15℃. Therefore, the disadvantage of the room temperature fluctuating hot and cold can be avoided, and the comfort is greatly improved.
Disadvantages
1. The price is more expensive, about 1/3 to 1/4 of the price compared with ordinary fixed speed air conditioners,
2. Because the control system and frequency conversion system of the inverter air conditioner are more complex, and the requirements for components are higher, the failure rate of inverter air conditioners is higher than that of ordinary air conditioners.
5 Differences between fixed speed air conditioners and inverter air conditioners
1.Structure. The inverter air conditioner adopts a frequency converter in structure, and the frequency of the power supply is changed by the frequency converter to make the speed (power) of the compressor continuously variable from the minimum to the maximum.
2. Refrigerant model. Inverter air conditioners generally use R410A refrigerant, while fixed frequency air conditioners use R22 refrigerant.
3. Installation method. Since the inverter air conditioner uses a mixed refrigerant, the difference between the installation and the fixed frequency air conditioner is that the inverter air conditioner must be evacuated before installation, while the fixed frequency air conditioner does not need to be evacuated.
4. Control precision. The frequency conversion adopts the inverter, which can make the power of the compressor continuously variable, so when the temperature reaches the set temperature, the air conditioner will work continuously with the minimum power to maintain the temperature, so the control precision is high. The fixed-frequency air conditioner controls the temperature to change within a certain range by starting and stopping, and the accuracy is low.
5. Save energy. In principle, the inverter air conditioner using the inverter has better energy-saving effect, and its energy-saving effect is better than that of the fixed-frequency air conditioner. However, due to the influence of many factors, such as the thermal insulation effect of the room, the outdoor temperature, etc. It did not achieve the effect stated in the propaganda. [First-class energy-saving air conditioner shopping guide>>]
6. Price. Since the inverter air conditioner uses a frequency converter, it is a new type of air conditioner, so its price is higher than that of a fixed frequency air conditioner.
I recommend: When buying an air conditioner, you should not only consider the price and function, but also the frequency of use of the air conditioner in your home and the length of time it will be turned on. If the turn-on time is short, for example, it is only turned on when it is hot during the day, then it is recommended that you buy a fixed-speed air conditioner, so that the cooling is fast, and it will not consume more power than an inverter air conditioner, and the price is cheaper. If your air conditioner needs to be used for a long time, you can buy an inverter air conditioner. Although the current price is more expensive, it can save energy and electricity, and is more comfortable.
