Every home is full of different appliances, some are used occasionally, and some are simply necessary. For example, a TV or a microwave oven are not essentials. Yes, they are needed and play a useful role in the life of every person. But, for example, now you can’t do without a refrigerator. This technique helps to keep food fresh, allows you to freeze meat, berries, vegetables for a long time. No family can do without a refrigerator. Since progress does not stand still, and any household appliances are constantly being improved, this has not bypassed the refrigerator. Today on the market there are models not only distinguished by their stylish design, spaciousness, but also efficiency.
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Previously, on the territory of our homeland, buildings made of logs were used to preserve perishable products. These buildings were filled with snow and ice, which was covered with flooring, and earth was laid on top. So people had the opportunity to preserve the freshness of products for a long time.
And in 1803, the first device appeared, which was called a refrigerator. This product was a container made of steel sheets, which was wrapped in rabbit skins. Such a design was placed in a tub and sprinkled with ice. So people have the opportunity to keep food chilled for a long time. And already in 1805, Oliver Evans developed a model of a refrigerator, but the model did not reach use. A few decades later, Jacob Perkis created a refrigerator based on the work of Evans. Such a device worked on the principle of para-compression. Later, a model appeared where cooling was due to compressors. But still, such units were bulky, and for their operation it was necessary to harvest ice.
Household refrigerators were also produced that worked from the electrical network, but their main drawback was the toxic waste released during operation.And in 1926, thanks to a Danish researcher, a silent, durable and, most importantly, non-toxic waste unit was born.
On the territory of the USSR, scientists also created their own refrigeration units. The first refrigerator was Eskimo. For his work, firewood and kerosene were needed. "Eskimo" was used to create artificial ice, with its help it was possible to obtain up to 12 kg of this product in one cycle of work.
There are several cooling systems for refrigerators, but the condenser system is the most widely used. Therefore, the principle of operation of a capacitor device will be given below.
Before talking about the principle of operation of any device, you should consider its main details. The main element of such a refrigerator is the compressor. It compresses and supplies the refrigerant. The temperature inside the unit is reduced by the evaporator. A capillary tube is provided to connect the compressor and evaporator. There is also a condenser here, where the substance from the gaseous state passes into the liquid state, while heat is released.
When the compressor turns on, the refrigerant begins to be sucked out of the evaporator. When the refrigerant enters the condenser, it begins to compress to a high pressure, and then is forced into the condenser. In this case, heat will be released, which will be dissipated in the environment. After that, the refrigerant will be cleaned in the filter. Then the refrigerant in the liquid state through the capillary tube will enter the evaporator. Here, low pressure will act on the refrigerant, while it will take heat from the internal space and, due to this, will again take on a gaseous state.This completes one cycle, and the refrigerant will again go to the condenser.
There are several criteria by which these aggregates can be classified. The first is the cooling system. It is of three types: compressor, absorption and thermoelectric. The most widely used devices with a compressor cooling system. They can have a large volume, but they will not consume a large amount of electricity.
Devices with an absorption system consume more electricity and usually do not have a large amount of internal space. Also, such models of refrigerators can work not only from the electrical network, but also from a gas cylinder.
Models with a thermoelectric cooling system do not have a refrigerant; the plates are responsible for cooling here. The power consumption of such a refrigerator will depend on its size.
The next criterion is the number of cameras. Here the units are also divided into three types: single-chamber, two-chamber and multi-chamber. In single-chamber models, the freezer section will be combined with a common food storage compartment. And there are also models that do not have a freezer compartment. Single-chamber units of standard and small sizes are on the market.
Devices with a separate freezer are called two-chamber. Moreover, the department for freezing can be located both above and below. Although now there are rarely models that have a freezer at the top of the unit, such devices are popular with buyers. And most modern refrigerators have a bottom freezer.In such units, drawers are provided, where it is convenient to store products according to a certain principle. It is worth noting that certain models may have a division into zones in the freezer compartment. In this case, it will be possible to change different conditions in them, depending on the products. For example, less humidity is required for storing meat products, while higher humidity is required for vegetable products.
Multi-chamber models have 3 or 4 compartments. Here, one section is assigned to the freezer, the second section is intended for cooling, and the third compartment is considered the “freshness zone”. Thanks to the "freshness zone" you can save all the useful elements in the product.
There are also models that resemble two-door cabinets. Such units are called "Side-by-Side". They are wider than conventional refrigerators. Behind one door is a compartment for cooling food, and behind the second - a compartment for freezing. Also, the freezer door of such models has a dispenser. With it, you will always have ice cubes and chilled water at hand.
Also, refrigerators differ in the type of installation. Traditional models, which most people have, are considered freestanding. Such a device should be installed at a distance from the stove and battery, since the heat from them can adversely affect the operation of the unit. A model that is mounted in furniture is called built-in. In this case, the front side will be covered with a door from the headset. So you can completely disguise the device and create a peculiar atmosphere in the kitchen.
If earlier only a couple of models of refrigerators were provided on the market, and people were more tormented by the question of where to buy this device.Today, the assortment is too large and before buying there are many questions and doubts about the wrong choice.
Since before buying, a person chooses a specific place for a "new family member", then first you should decide on the size. But along with this question will be the question of its spaciousness. Narrow models in width can vary from 40 to 50 cm, wider models can reach 120 cm. The height of standard models is about 160 cm. But there are also units of 200 cm each. Such models will be very roomy, but not all family members can easily reach the top shelves. Do not forget about the dimensions of the doorways and the dimensions of the elevator, when choosing a device with large dimensions.
So the choice of volume will depend on the number of people in the family. If the family consists of two people, then a large volume is useless. But in order for a large family to be always well-fed, you will need a model with a large volume.
An important criterion when choosing is a freezer. Single-chamber models have a small compartment for freezing food. This option will be convenient for giving or for a small family. In two-chamber models there is a special department for freezing, which is divided into compartments. So it will be possible to buy meat for the future, store butter or cottage cheese for a long time, as well as freeze berries and vegetables for the winter. But at the same time, do not forget that freezers are divided into four types, they will be distinguished by the minimum freezing temperature, and the shelf life of products will depend on this parameter.
It is also worth looking at the refrigerator itself. Not only volume is important here, but also the presence of a “freshness zone”. This zone has optimal conditions for storing fruits and vegetables.Also, lovers of seafood, fresh meat should pay attention to multi-chamber models. There will be a special department for the freshness zone, thanks to which it will be possible not only to store these products in large volumes, but also to preserve their useful properties.
In addition to the main criteria, there are also additional ones that, to a certain extent, influence the choice when buying. First of all, it is a class of energy consumption. The efficiency of the refrigerator will depend on this. Most models have an "A" class, but there are also new more economical models with a class of "A +", "A ++", "A +++". Such options have a higher cost, but due to energy savings they will quickly justify themselves.
In addition, for economical consumption of electricity, there is a "vacation" mode. When the house will be empty for several weeks or days, this option will work well. By turning on this mode, the freezer compartment will operate in its normal mode, and the cooling compartment will maintain a temperature of about 15 degrees.
And of course, do not forget about the materials from which the unit is made. Not only the quality of the product, but also the ease of maintenance will depend on this. Inexpensive models are made of plastic. Products of the middle price category and premium class can be made of glass or metal. Internal shelves can be presented in the form of a grid or a solid glass shelf. Lattices are made of plastic or metal. Not all products will be able to stand stably on them, and also in case of a cup overturning, you will have to wash the floor of the compartment. Glass shelves will be strong and will not require special care.
The useful volume of this model is 149 liters.The refrigerator compartment has three glass shelves. Glass is durable, can withstand the load, and is resistant to chips, scratches and cracks. At the bottom there is a compartment for storing vegetables and fruits. At the top there is a department for freezing, its volume is 15 liters. In the event of a power outage, the optimum temperature will be maintained for 15 hours.
"Hisense RR-220D4AR2" has an energy class "A ++", due to this, the device will consume 150 kWh per year. The refrigerator compartment has a drip defrost, and the freezer section needs manual defrost. The size of the unit is 52 * 128 * 53.6 cm, and the weight is 32 kg.
The average cost is 17,500 rubles.
This model of the refrigeration unit does not have a compartment for freezing food. The Gorenje R6192LX case is made of stainless steel and has a special coating, thanks to which fingerprints or hand marks will not remain on the surface.
Using the temperature indicator, you can quickly and easily set the desired mode. The dynamic cooling system allows you to maintain a uniform temperature inside the compartment. There is also an ionization system. So the products will be stored longer, and bacteria and an unpleasant smell will not appear inside the chamber. There is a useful function "AdaptTech". With its help, the unit remembers the time of the most frequent opening of the door and by this moment it will lower the temperature. It is worth noting the presence of three special zones.In one of them, you can choose the level of humidity, the other two are designed to store meat, fish, butter. There is also a specially designated shelf with a lattice, where it is convenient to store bottles. There are also shelves on the door, the height of which each owner can adjust to suit their needs.
The total volume of "Gorenje R6192LX" is 370 liters. This refrigerator has a drip cooling system. Electricity consumption per year is 113 kWh. The size of "Gorenje R6192LX" is 60*64*185 cm, and the weight is 75 kg.
The average cost is 47,000 rubles.
The cooling chamber of this device at the top has a special panel that supplies cold air. As a result, food cools quickly and stays fresh longer. The freezer is located below, and its volume is 107 liters. With its help, you can freeze up to 12 kg of food per day.
On the front side of the door there is a panel with which you can adjust the temperature in both the cooling and freezer compartments. There are also useful options such as vacation, super-freeze, super-cooling and eco-mode. In the event of a power outage, the optimum temperature will be maintained for 12 hours.
"LG DoorCooling + GA-B509CLWL" has an energy consumption class of "A +", so the annual electricity consumption is about 325 kWh. The size of the unit is 59.5 * 68.2 * 203 cm, and the total volume is 384 liters.
The average cost is 40,000 rubles.
The case of this model is made of black glass. The useful volume of "Maunfeld MFF185NFB" is 317 liters, where 94 liters fall on the freezer compartment. The presence of the "NoFrost" system will free you from additional defrosting of the unit. There is a special fan that provides not only fast, but also uniform cooling.
To make it convenient for any customer to use Maunfeld MFF185NFB, the manufacturer has created the ability to adjust not only the height of the shelves, but the height of the bottle rack and other compartments. So everyone will distribute the space according to their needs. It is worth noting that the shelves are made of tempered glass, thanks to which they will withstand the load, will not be scratched, and chips will not appear. The freezer compartment has 3 shelves and an ice bin. The freezing capacity is 4.5 kg per day.
The Maunfeld MFF185NFB energy class is A+, so the annual electricity consumption is 243 kWh. The size of "Maunfeld MFF185NFB" is 59.5*63.5*185 cm, and the weight is 62 kg.
The average cost is 50,000 rubles.
The useful volume of the Liebherr CN4015 is 356 liters, where the refrigerator compartment has a volume of 269 liters, and the freezer compartment has a volume of 87 liters.A feature of this model is the presence of the DuoCooling system, which consists of two independent refrigeration circuits. Thanks to this, it is possible to accurately control the temperature in the cooling compartment and freezer.
There is a system that conducts rapid cooling of products, there is also a special switch that turns off the fan when the door is opened. For quick freezing of products, the manufacturer has provided the "SuperFrost" mode. With its help, in the shortest possible time, the temperature drops to -32 degrees. This allows you to save the maximum amount of vitamins in the product. When the food is frozen, the unit will automatically return to normal operation.
"Liebherr CN4015" corresponds to the "A ++" energy class. The annual electricity consumption is 229 kWh. The size of the refrigerator is 60 * 63 * 201 cm, and the weight is 77.5 kg.
The average cost is 53,000 rubles.
This model has three separate chambers. The total volume of the unit is 378 liters, where 100 liters are allocated to the freezer, and 278 to the refrigerator compartment. "Haier A2F737CDBG" has a "zero zone", where the temperature is zero degrees, and there is also the possibility of adjusting the humidity. Thanks to this, you can safely store meat, fish and dairy products there.
There is a special technology in the plant food storage box.Here, the manufacturer installed a membrane that has a respiratory function, thanks to which the products will receive the optimal level of humidity. At the same time, when the humidity becomes higher than the required norm, the membrane will open, through which excess moist air will pass into the cooling section.
In addition, "Haier A2F737CDBG" has folding shelves, now it will not be difficult to set up a comfortable space. Also in the common compartment there is a bottle rack, and on the door there are a large number of shelves where you can also store bottles, canned food, eggs, etc.
"Haier A2F737CDBG" corresponds to the "A ++" class of electricity consumption, so the finished power consumption is 260 kWh. The unit has overall dimensions of 59.5 * 67.2 * 200 cm, while its weight is 88 kg.
The average cost is 65,000 rubles.
Such a unit has a volume of 634 liters, while 405 liters are allocated to the refrigerator, and 229 liters to the freezer. But at the same time, it is worth noting that this model does not have large dimensions. The manufacturer simply reduced the wall thickness, increased thermal insulation and at the same time was able to advantageously increase the volume of internal space.
The cooling system "Samsung RS63R5571SL" checks the uniformity of the cooling of products, while it distributes air throughout the entire volume of the cooling compartment. So the products will keep their freshness longer. Also, in order to avoid cold losses, the manufacturer installed a special metal plate on the back wall.There are two modes for fast cooling and fast freezing. With their help, in hot weather, you can quickly cool a drink, make ice or ice cream.
"Samsung RS63R5571SL" has an inverter compressor, which allows you to reduce energy consumption, as well as reduce noise and wear on the device. This appliance complies with the energy class "A +", so the annual electricity consumption is 420 kWh. The size of "Samsung RS63R5571SL" is 91.2 * 71.6 * 178 cm, and the weight is 103 kg.
The average cost is 95,000 rubles.
This three-chamber refrigerator has a tempered glass front in black. So the device will become not only a necessary kitchen appliance, but also a real decoration of the space.
The compartment for cooling "Weissgauff WCD 486 NFB" has a volume of 268 liters, and the freezer - 133 liters. Shelves in the refrigerator can be placed in a way that is convenient for any owner. The freezer has as many as 6 compartments, now you can easily stock up on a large number of perishable foods. For storage of vegetables and fruit the double container is provided. Here you can create the necessary microclimate to extend the shelf life.
"Weissgauff WCD 486 NFB" corresponds to the energy class "A +", so the device consumes 323 kWh per year. The size of the unit is 79*70*180 cm.
The average cost is 65,000 rubles.
The rating presents models of various manufacturers, which differ in their design, volume and cost. But they are united by almost silent operation, reliability, and most importantly, economical consumption of electricity. Although the cost of such devices may be slightly higher than that of those that have a lower energy class. But electricity bills will help you know that you made the right choice.