Atlant refrigerator: two-compressor or single-compressor - which is better?

When choosing a new refrigerator, the buyer inevitably faces a dilemma: to give preference to a time-tested model with one compressor or to consider more modern options with two motors. The brand Atlant occupies a leading position in the market, offering a wide range of modifications, each of which has its own technical features. Understanding the difference in the design of compressor units is the key to purchasing equipment that will last for many years without extra costs for electricity and repairs.

In this article we will analyze in detail the design differences, the effect of the number of compressors on the microclimate inside the chambers and the economic feasibility of overpaying for additional technical components. You will find out in what situations two-compressor system it is really necessary, and when you can save money by purchasing a classic unit. This will help you make an informed decision based on the real needs of your family, and not on marketing slogans.

The main difference lies in the principle of operation and distribution of cold. Single-compressor models use one powerful motor to cool all chambers, switching air flows, then as double-compressor equipped with two independent circuits. The choice between them determines not only the price, but also the noise level, durability and ease of use in the future.

Operating principle and design of compressor systems

The heart of any refrigerator is the compressor, which provides circulation of refrigerant in the system. In models Atlant with one compressor, this element is responsible for cooling both the refrigeration and freezer compartments. For this, a special solenoid valve is used, which redirects the freon flow. First, one chamber is cooled, then the system switches to the other. This cycle is repeated constantly, maintaining the set temperature.

In contrast, two-compressor models are equipped with two separate motors and two independent cooling circuits. This means that one compressoris responsible for the operation of the refrigerator compartment, and the second for the freezer compartment. They work independently of each other: if the temperature in the freezer has already reached normal, the motor turns off, even if an active freezing process is underway in the refrigerator compartment at that moment. This autonomy is considered more reliable and energy efficient.

Technically, a dual-circuit system is more complex, as it requires the installation of two compressors, two condensers and additional pipes. However, it is precisely this complexity that makes it possible to implement complete No Frost or a more efficient system Low Frost in both cameras independently. In single-compressor models, a combined system is often found, where drip defrosting is used in the refrigeration chamber, and manual or No Frost is used in the freezer, which is a compromise to reduce cost.

It is important to note that modern inverter motors installed in some models Atlantcan smooth out differences in performance. However, the classical mechanics of single-compressor systems still imply a large load on a single working unit, which theoretically can reduce its resource compared to the distributed load in two-compressor analogues.

Advantages of two-compressor refrigerators Atlant

The main advantage of having two motors is the complete independence of temperature conditions. You can set the temperature in the freezer -24°C for deep freezing berries, while the refrigerator compartment will be maintained +4°C for storing vegetables. In single-compressor models, such extreme values ​​may be difficult to achieve simultaneously due to the limitations of the operating cycle of one compressor.

The second important advantage is the ability to defrost one chamber while the second continues to operate. If you need to wash the refrigerator compartment, you can turn off only its compressor (or simply turn off the power, if the model allows it, but more often the point is that the second circuit will not be affected by the defrosting of the first, although a completely independent power shutdown usually requires turning off the entire device, but the logic of the circuits remains separate). Moreover, if one of the compressors breaks down, the second, as a rule, continues to function, storing products in at least one chamber.

⚠️ Attention: Despite the independence of the circuits, a power outage will stop both compressors at once. Separate control is only possible through electronic panels, if they are provided for in the design, but physically the device has one power supply.

It is also worth mentioning the reduced noise level. Since each compressor in a dual-motor system has less power and operates more gently, there is less vibration and noise from them. They turn on in turn, so the simultaneous operation of both motors rarely occurs, only at times of peak load immediately after defrosting or loading a large amount of warm food.

Saving electricity is another weighty argument. Two low-power compressors, working alternately and only when a particular chamber really needs it, consume less energy than one powerful motor, which is forced to constantly drive refrigerant through a large circuit, often cooling an already cold space “idle”.

Pros and cons of single-compressor models

Single-compressor refrigerators Atlant remain popular due to their affordable price. The absence of a second motor, additional tubes and complex electronics significantly reduces production costs. For buyers on a budget, this is often a deciding factor. In addition, such models are easier to install initially and have less weight.

However, this system also has its drawbacks. The main one is the impossibility of simultaneously maintaining different temperature conditions with high accuracy. If you often open the refrigerator door, the compressor is forced to turn on more often to compensate for the heat, and at this time the freezer is also subjected to a cooling cycle, which can lead to excess food in the freezer. freezing food in the freezer.

The operating life of one compressor that is forced to service two volumes, theoretically less than two separate systems. Although modern technologies make it possible to achieve high reliability indicators, statistics from service centers show that the load on a single unit is higher. If such a compressor fails, the refrigerator stops cooling completely, and both chambers defrost.

However, for small kitchens or cottages where the refrigerator is not used around the clock or is not fully loaded, a single-compressor model is an excellent choice. It copes with the basic tasks of storing products, and the simplicity of the design makes it easier to find spare parts in case of need for repairs.

Comparative table: what to choose?

To systematize the information and make the choice easier, let's turn to a comparative analysis of characteristics. Below are the key parameters by which these two types of refrigeration equipment are most often compared.

The table shows that the overpayment for a second compressor often pays off due to savings on electricity and the absence of problems with frozen products. However, if the budget is strictly limited, single-compressor the option remains a completely viable solution for standard needs.

It is also worth considering the dimensions. Two-compressor models can sometimes be slightly wider or have a modified rear wall design due to the presence of a second motor, although in the lines Atlant engineers have learned to minimize these differences while maintaining standard dimensions.

The influence of the number of compressors on the safety of products

The quality of food storage directly depends on the stability of the temperature regime. In two-compressor refrigerators, the absence of temperature changes when opening one of the doors is a huge plus. When you take a bottle of milk from the refrigerator, the freezer compressor does not even “know” about it and does not turn on again. This preserves the structure of frozen foods, preventing the formation of excess frost and ice crystals.

In models with one compressor, opening the refrigerator compartment door causes an influx of warm air. The sensor detects the temperature increase and starts the motor. At this moment, cold begins to actively flow into the freezer, even if the temperature there is normal. Such cyclic fluctuations can negatively affect the shelf life of meat, fish and vegetables, accelerating the processes of oxidation and loss of moisture.

In addition, in double-circuit systems, odors from the refrigeration chamber practically do not penetrate into freezer and vice versa, since the air flows are physically separated. In single-circuit models, there is general air circulation, and the smell of fish or spices can be absorbed into ice cream or ice if you do not use airtight packaging.

Thus, if you value food freshness and plan to stock up for a long time, two-compressor system is the uncontested leader in the quality of preserving the organoleptic properties of food.

Maintainability and reliability of equipment

The issue of reliability often causes controversy. On the one hand, the more complex the system, the more elements it contains that can fail. On the other hand, load distribution extends the life of each individual node. Statistics from service centers by brand Atlant show that both systems show high reliability, but the nature of their failures differs.

In single-compressor models, most often the compressor itself or the switching valve fails. Replacing a compressor is an expensive procedure that requires evacuation of the system and refilling with freon. In dual-compressor models, the probability of simultaneous failure of both motors is extremely small. If one burns out, the second one continues to work, which allows you to wait until the technician arrives without losing all the products.

⚠️ Attention: Repairing a two-compressor refrigerator can cost more only if the control electronics, which control the operation of two independent circuits, fail. However, their mechanical part (compressors) is reliable.

Spare parts for refrigerators Atlant are available on the market regardless of the number of compressors, since the manufacturer has been supplying them for more than 50 years. However, the cost of the compressor itself with two cylinders (for two-chamber models) may be higher than the cost of one of two small compressors, although in total two small ones may cost more if completely replaced.

In the long term (7-10 years of operation), two-compressor models are often more profitable, since they require less intervention from specialists, and their operation is more predictable and stable.

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