What is the difference between fixed frequency and frequency conversion in a refrigerator? the difference is here
Friends who buy refrigerators in recent years may find a new term in the refrigerator market: “inverter refrigerator”. Therefore, in order to distinguish traditional refrigerators from this refrigerator, they also had another name, called “fixed-frequency refrigerators”. So what is this expensive inverter refrigerator? What improvement is there compared with traditional refrigerators? What is the difference between the two?
Let’s first take a look at the basic centering of the two. The “frequency” in frequency conversion and frequency fixation refers to the “heart” of the refrigerator. A more professional way to put it is whether the working power frequency and speed of the compressor are variable.
Fixed frequency refrigerator
The compressor speed is fixed, between 2950 and 3000 revolutions. After reaching the set temperature, the compressor will stop running. When the temperature rises to a certain number, the compressor will start running again. He controls the temperature by stopping or starting the compressor.
inverter refrigerator
An inverter is added to the regular refrigerator, so that the compressor speed of the inverter refrigerator is not fixed. When the load is high, the refrigerator rotates quickly to achieve the purpose of cooling down as soon as possible. When the load is low, the refrigerator runs at the lowest speed to maintain temperature. He controls the temperature in the refrigerator by relying on the speed of the compressor.
Compared with inverter refrigerators, fixed-frequency refrigerators have greater advantages in price. So for friends with limited budgets and low requirements for constant temperature and energy conservation, you can choose a fixed-frequency refrigerator.
Benefits of inverter refrigerators
So what are the benefits of this slow-running compressor compared to traditional full-power refrigeration?
1. constant temperature
Constant temperature is the biggest selling point of inverter refrigerators-when the cooling speed and the heating speed are the same, the temperature in the refrigerator is constant. At present, the temperature difference between inverter refrigerators and continuous operation (without opening the refrigerator door) can be accurate to 0.1 ° C.
Fixed-frequency refrigerators are no good. They need to wait for the temperature to rise before turning on the compressor for refrigeration, which will inevitably lead to a large temperature difference before and after the compressor is started.
The advantage of constant temperature is that it improves its preservation ability, which is precisely the main use of refrigerators.
2. power saving
Inverter refrigerators rarely shut down, but don’t think that inverter refrigerators consume electricity because of this-although they rarely shut down, they run on low power most of the time and consume very limited power.
Compared with fixed-frequency refrigerators, although they are frequently shut down, firstly, the compressor consumes a lot of power at the moment of start-up; secondly, it runs at full power every time it is started.
Therefore, after calculating the general ledger, the comprehensive power consumption of the inverter refrigerator is still lower.
3. noise
The compressor will make noise during operation, and the higher the speed of the compressor, the louder the noise will be. The compressor of inverter refrigerators rarely rotates at full power, so the noise generated is relatively small.
You said that the compressor of the inverter refrigerator does not stop, so there is constant noise? In fact, the noise generated by the compressor when operating at low power is very limited and is basically inaudible-it can only be reflected when measured by equipment.
4. life
Not just compressors, all motors are the same-every time they are started and stopped, the motor will be more wear and tear.
The compressor of a fixed-frequency refrigerator is frequently started and stopped, so compared with a variable-frequency refrigerator that almost never stops, the life will definitely have an impact.