The working principle and characteristics of inverter compressor Inverter compressor refers to a compressor whose relative speed is constant, and whose speed is continuously adjusted within a certain range through a control method or means, which can continuously change the output energy. working principle Inverter compressor can be divided into two parts, one is inverter controller, which is what we often say; the other is compressor. The main question asked by the building is how the frequency converter achieves speed regulation. The principle of the variable frequency controller is to convert the alternating current in the power grid into a square wave pulse output. By adjusting the frequency of the square wave pulse (that is, adjusting the duty cycle), the speed of the motor driving the compressor can be controlled. The higher the frequency, the higher the speed. characteristic Compared with ordinary compressors, inverter compressors have different power supply adjustment circuits. There is an additional inverter speed control circuit in the inverter; ordinary ones are just voltage regulator circuits, which is the most fundamental difference.
Ordinary compressors can not be used in inverter air conditioners, because the working voltage and current of ordinary compressors are basically in a fixed range when designing, and the working range of inverter air conditioners is very large Yes, so if the inverter air conditioner uses a fixed frequency compressor, then the compressor will definitely burn out! Inverter compressors can be used in fixed frequency air conditioners, but at this time the inverter compressor is the same as fixed frequency, and it can't exert its characteristics! The structure of inverter compressor and fixed frequency compressor is still different. The interior of the fixed frequency is composed of two windings (starting winding, running winding), and the starting capacitor is required when starting. The inverter compressor does not need a starting capacitor, it is similar to a three-phase motor, with three windings inside. It can change the speed through the frequency conversion circuit to control the temperature, the process is stable Advantage The traditional air-conditioning compressor relies on its constant "on and off" to adjust the indoor temperature, and it is easy to cause the room temperature to suddenly cool and heat between consumption and consume more power. The inverter air conditioner relies on the speed of the air conditioner compressor speed to achieve the purpose of controlling the room temperature, the room temperature fluctuation is small, the power consumption is less, and its comfort is greatly improved.
The inverter air conditioner using inverter control technology can automatically select the 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 the temperature difference is low under the condition of low speed and low energy consumption Fluctuation achieves fast, energy-saving and comfortable temperature control effect. The core of the inverter air conditioner is the inverter. The frequency converter is a high-tech new technology that came out in the 1980s. It realizes the automatic adjustment of the operating frequency of the motor through the conversion of current, and changes the fixed grid frequency of 50Hz to a variable frequency of 30-130Hz; at the same time, it also makes the power supply voltage The range reaches 142-270V, which completely solves the problem that the air conditioner cannot work due to the instability of the grid voltage, so that the air conditioner has completed an epoch-making change. Inverter air conditioner increases the heating capacity at low temperature by increasing the working frequency of the air conditioner compressor. The maximum heating capacity can reach 1.5 times that of similar air conditioners. It can still maintain a good heating effect at low temperature. In addition, the general air conditioner split machine has only four speeds to adjust, and when the indoor fan of the inverter air conditioner automatically runs, the speed will change within the range of 12 speeds with the operating frequency of the air conditioner compressor. The capacity of the air conditioner is more reasonable and delicate, and it achieves quiet operation with low noise. The minimum noise is only about 30 decibels.
The inverter air conditioner starts heating or cooling with maximum power and maximum air volume every time it starts. After quickly approaching the set temperature, the air conditioner compressor will run at a low speed and low energy consumption. The power maintains the set temperature, which not only stabilizes the temperature, but also avoids the attenuation of the service life caused by the frequent opening and stopping of the air conditioner compressor, and the power consumption is greatly reduced, achieving high efficiency and energy saving.
