The compressor is a very important part of the refrigerator. There are several types of these devices and they all differ in technical characteristics. The inverter compressor was developed relatively recently and many do not know about the principle of its operation and its advantages. In this article, we will talk about the principle of operation and what an inverter compressor is in a refrigerator.
Inverter compressor working principle
When the linear compressor is running, the device starts up to its maximum. When the set cooling temperature is reached, an automatic shutdown is activated. The relay controls the process of shutting down and restarting the refrigerator. At the moment of switching on and off, a click is triggered. A characteristic buzzing signal indicates engine operation.
With the constant operation of the refrigerator at full capacity and frequent shutdown, the device heats up very much and after a certain time fails, after which the replacement of the cooling device is required. Another disadvantage: high electricity consumption due to increased power grid load.
When creating an inverter motor, all the listed disadvantages were taken into account. In general, the device works on the same principle, with a few differences. When the inverter refrigerator is cooled to the required temperature, the operation does not stop, but a gradual decrease in speed and a decrease in the speed of the refrigerant occurs. Thus, a certain temperature level is maintained.
When the refrigerator door is opened, the number of shaft revolutions increases according to the sensor signal that the temperature rises and does not correspond to the required one. In contrast to the linear generator, the new generator runs more smoothly using minimum power.
If we explain inverter operation from a technical point of view, there is a conversion of alternating current into direct current, after which the reverse process follows, but the required frequency is set. The three-phase compressor motor with a brushless system, applied in the refrigerator, is used in the production of automobile mechanisms, computer, medical equipment, etc.
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Pros and cons of an inverter refrigeration system
The main advantage of this type of compressor is low power consumption and long-term operation. Smooth, fast temperature control and quiet operation are the advantages of household appliances with this type of engine.
When buying a refrigerator with an inverter motor, the warranty is issued for a period of about 10 years. This confirms the reliability of the device and the confidence of the manufacturer in the quality of its product.
However, a refrigerator with a linear compressor costs less than an inverter refrigeration system, so it continues to be in demand. Along with the high price, the inverter device has one more disadvantage. Power surges can lead to a malfunction of the refrigerator, since this type of compressor is more complex than a conventional engine. Indoor wiring must be reliable. Otherwise, the installation of stabilization devices is required.
Regardless of the presence of shortcomings, such a device is gaining popularity among buyers. Gradually, the market is filled with new, more advanced models. Modern production is not limited to refrigerators - the inverter compressor is already an integral part of air conditioners, washing machines and other household appliances.
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Refrigerators operated 15 years ago until the first breakdown 25 years ago. They were made of non-ferrous metal, without electronics or inverter compressors.
Thanks to the author for a detailed explanation of the inverter compressor device. It became clear that it was necessary to connect such refrigerators to the network through a stabilizer, otherwise the price of repairs would be comparable to the cost of a new refrigerator.
The article is useful.
This refrigerator worked for us for 6 years. And suddenly he turned off, all the lights went out. They called the foreman from the service department. It cannot figure out what the cause of the breakdown is. On the Internet we found specialists from outside. They say the compressor is the cause. As we understand it, it is not profitable for the service department to install the compressor under the warranty (10 years for the compressor), although the work on its installation costs a lot. And third parties offer to install it for 25 thousand rubles: compressor plus work. What is there to do? We will take)))
Good afternoon.
What brand of refrigerator?
For 25 thousand rubles. you can buy a new one, not more profitable?
ZILs from the war are still working
God, what marketing nonsense. You can parse each sentence straight.
Recently it all appeared, yeah. It's a great invention. Three-phase motors have existed for a long time, the power supply system for a three-phase motor from one phase has existed for a long time, inverters have existed for a long time. Now someone needed to put it all together and sell it to refrigerator buyers as a mega-progress.
Law of energy conservation? No, you haven't heard. The refrigerator has to do a certain amount of work, and the amount of energy it will consume is equal to that work divided by the efficiency of the compressor. All! This energy does not depend in any way on the operating mode of the compressor, but depends only on its efficiency!
Yes, the efficiency itself depends on the operating mode, but here it is done simply - the compressor is configured so that it works at maximum efficiency, that's all. Therefore, the most economical will be the mode of short-term operation at constant power at maximum efficiency with subsequent shutdown. And not a bumpy back and forth and not constant work at scanty power.
And if you really want to control the speed - for a constant temperature, for example - then this can be done with any type of electric motor! "Inverter" is not necessary here at all.
That's it, I don't even want to disassemble this nonsense further.