In any domestic refrigerator, the refrigerant - the refrigerant, the cooler - circulates in a closed circuit. The movement occurs under the influence of a compressor, which is driven either by an electric motor or an electromagnetic coil. Four types of compressors are used in household refrigerators - conventional, linear, inverter and linear inverter.
A conventional compressor is an electric motor with a piston pump that pumps the refrigerant of the refrigerator. These are found in the oldest refrigerators and either turn on at full power or turn off completely. This leads to large temperature fluctuations inside the refrigerator chambers. The linear compressor does not have an electric motor. Its function is performed by an electromagnetic coil, in the core of which a pump piston is installed. The compressor has no rotating parts, it consumes less electricity, is less noisy and cheaper. It also works in two-position mode - either at full power or completely off. This mode has significant drawbacks. Constantly turning on at full power creates an overload for the compressor. Running the engine at full power significantly increases the load on the network, increasing energy costs. These shortcomings are absent in inverter compressors having an adjustable shaft speed. The engine speed is continuously adjustable. The regulator maintains such revolutions that are needed to create the set temperature in the refrigerating chambers. The linear inverter compressor does not have an electric motor at all, but it can change the speed of the pump piston. This is the quietest and most economical type of compressor available today.
The engine speed control board is a little expensive, which is of course a minus. The operation of the inverter compressor is smooth, without abrupt switching on and off. First, it starts and cools the chamber inside the refrigerator to the desired (set) temperature, which it maintains constantly. This type of engine does not turn off completely, but only reduces speed to a minimum. As a result, the temperature in the chamber remains unchanged, which is a definite plus. Linear inverter - it does not have an electric motor, and it can change the speed of the pump piston. This type of compressor is the quietest and most economical to date.
Read in the article
- 1 Features of inverter refrigerators
- 2 Device and principle of operation
- 3 Advantages and disadvantages
- 4 Varieties of inverter compressors
- 4.1 Rotary models
- 4.2 Linear Models
- 5 Top models of inverter refrigerators with a good price / quality ratio
- 5.1 Vestfrost VF 910 X
- 5.2 Liebherr CNef 4815
- 5.3 Siemens KG39NAI31R
- 5.4 Samsung RB-37 J5200WW
- 5.5 Whirlpool WTNF 923W
- 5.6 Liebherr CN 4015
- 5.7 LG GA-B419 SYGL
- 5.8 Liebherr C 4025
- 5.9 Samsung RB-30 J3000WW
- 5.10 Weissgauff WCD 486 NFB
- 6 How to choose an inverter refrigerator
- 6.1 Brand
- 6.2 Performance characteristics
- 6.2.1 All characteristics
- 7 Conclusion
Features of inverter refrigerators
The main feature of modern inverter refrigerators is a minimum of rotating, and generally moving parts. There is practically nothing to wear out in them, which means there is nothing to break. Their reliability is much higher than usual. They work silently. The set temperature is reached faster and is maintained with greater accuracy than in other models. But you have to pay for these advantages, their price is higher than that of older models. It should be borne in mind that inverter models consume 40% less electricity.
For them, the installation of a stabilizer is recommended.
Device and principle of operation
The main element in the device of any refrigerator is the compressor. It is a combination of an electric drive and a compressing device. The electric drive may be an electric motor or an electromagnetic coil, and the compression device may be piston, linear or rotary. Modes of operation are also different. Step mode turns the compressor on and off. In inverter mode, the compressor runs continuously. But with different performance.
Advantages and disadvantages
The advantages of inverter models of household refrigerators in the first place include their cost-effectiveness. The electric drive operates at full capacity only at initial power-up, then it operates in maintenance mode. These refrigerators have a long trouble free life because they have very few moving parts. For the same reason, they work almost silently. They have the ability to keep the set temperature in a wide range of values, while with high accuracy.
Along with the pluses, they have two serious minuses. Their price is much higher than other models. We have to optimistically expect a payback in a few years due to energy savings. And further. Sophisticated electronics are very sensitive to the instability of the mains voltage. To protect against its surges, it is recommended to install a voltage stabilizer, because repairs will also cost a tidy sum, and spare parts are almost never available for sale.
Varieties of inverter compressors
Rotary models
The rotary compressor is found in refrigerators more often than other types of compressors. Its main difference is the absence of a piston. Productivity and pressure are achieved due to the changing gap between the rotor and the compressor housing.
Low noise level is the main trump card of the inverter refrigerator. In addition, inverter models of compressors are more durable and less noisy, as they rarely operate at full capacity.
These devices, which do not have a piston, provide a pressure difference in them, which is achieved due to the rotation of the rotor and the moving plate.
Linear Models
The linear compressor is used in most models with a dry freeze system. It is made in the form of a coil with an electromagnetic rod, which is connected to the pump piston.
Linear inverter is the quietest and most economical mechanism, combining the advantages of linear and inverter types. The speed of movement of its piston is electronically controlled. Works in continuous mode.
The piston in them does not have a connecting rod mechanism and moves due to the operation of the electromagnetic coil exclusively in one plane. The work is carried out in three stages: turn on, cool, turn off. Due to frequent switching on, the power consumption increases somewhat, although it is almost two times lower than in traditional reciprocating ones. This type is mainly used in Electrolux units.
Top models of inverter refrigerators with a good price / quality ratio
The list is approximate, there are a lot of good models on the market.
Vestfrost VF 910 X
The refrigerator has three chambers and four doors. Management is carried out using the LCD display. The set temperature in all compartments is provided by two compressors. The model has an antibacterial coating, an alarm system about different conditions. The noise level does not exceed 45 dB.
ADVANTAGES
- The volume of the refrigerating chamber reaches 410 liters.
- The volume of the freezer is 210 liters.
- Lots of cameras and doors.
- Low noise level.
- It has an antibacterial coating.
- Convenient electronic control.
- Implemented support for No Frost technology.
- There is a vacation mode.
- Very high freezing power.
- There is a temperature display.
- The body is made of stainless steel.
LIMITATIONS
- Very big weight.
- High power consumption.
- Terribly high cost.
Liebherr CNef 4815
It has one freezer, one refrigerator and one compressor. The total volume is 361 liters. Noise level 38dB. Doors have handles with pushers. The control system display is located inside the housing. No Frost support - only in the freezer, the drip defrost system works in the refrigerator.
ADVANTAGES
- Very low noise level.
- There is a folding shelf.
- Low power consumption.
- A push handle is used.
- Long autonomous preservation of cold.
- High freezing power.
- Implemented light and sound indication.
- Large refrigerator and freezer compartments.
- Sturdy glass shelves.
- Implemented detailed management.
LIMITATIONS
- No Frost technology is implemented only in the freezer.
- High price.
Siemens KG39NAI31R
Another model of the inverter refrigerator, which has earned the trust of consumers.
ADVANTAGES
- Very low noise level.
- Good capacity.
- Not very high power consumption.
- No Frost technology is supported.
- Convenient temperature control.
- There is a vacation mode.
- Implemented sound and light indication.
- High freezing power.
LIMITATIONS
- High price.
- Buttons are not always responsive to pressing.
Samsung RB-37 J5200WW
The inverter compressor changes performance, thereby regulating the temperature. A display is mounted on the upper door, showing the parameters of operation in real time. It is possible to set the "Vacation" mode, which significantly reduces power consumption. Can freeze 12 kg of food per day. The noise level does not exceed 38 dB.
ADVANTAGES
- Convenient management.
- Good capacity.
- Very low noise level.
- There is a vacation mode.
- Long autonomous preservation of cold.
- No Frost technology is supported.
LIMITATIONS
- Some instances are too noisy.
- Shelves seem flimsy.
- Lighting is located only from above.
- Few means of indicating problems.
Whirlpool WTNF 923W
The refrigerator is equipped with an LCD display located on the top door. Whirlpool WTNF 923 W provides two zones of freshness: dry and wet. This means that the refrigerator will dry fruit only when the owner needs it. Supports No Frost technology in both refrigerator and freezer. It is moderately noisy, above 40 dB does not happen.
ADVANTAGES
- The freshness zone can be dry and wet.
- No Frost technology is supported.
- Relatively long autonomous preservation of cold.
- It has an antibacterial coating.
- Large capacity.
- Not very high noise level.
LIMITATIONS
- Some instances have assembly issues.
- Some copies turned out to be too noisy.
Liebherr CN 4015
Medium sized refrigerator. The volume of the refrigerator compartment is 269 liters, the volume of the freezer reaches 87 liters. No Frost technology works in the freezer, and a drip defrosting system is used in the refrigerator. Lots of shelves, one shelf is foldable. The internal display shows the temperature in each chamber. The noise level does not exceed 39 dB. It is possible to move the doors.
ADVANTAGES
- Refrigerator shelves are made of high-strength glass.
- Excellent capacity for both cameras.
- Not very high noise level.
- The freezer supports No Frost technology.
- A push handle is used.
- There is a folding shelf.
- Convenient electronic control.
- Not very high power consumption.
LIMITATIONS
- The refrigerator compartment does not support No Frost technology.
- High price.
- Not the best ergonomics of the shelves on the door.
LG GA-B419 SYGL
The refrigerator has four shelves and one fruit drawer. It can freeze up to 9.3 kg of food per day. Both of his cameras support No Frost technology. If the door is left open for a long time, the alarm will sound. The noise level emitted by the refrigerator does not exceed 39 dB. There is no folding shelf, no antibacterial coating.
ADVANTAGES
- Kind of cute.
- The price is small.
- No Frost technology is supported.
- There is a sound indication of an open door.
- Good size fridge compartment.
- The shelves are made of impact-resistant glass.
- Works quietly.
- Easy to set up.
LIMITATIONS
- There is no freshness zone.
- Some instances are noisier than others.
- The egg rack is designed for 8 pieces. Would have liked a larger fruit drawer.
Liebherr C 4025
The body height is 201.1 cm. In total, the refrigerator has 5 shelves, all of them are made of impact-resistant glass. There is also a retractable folding shelf. This model has a very good seal fit. With the electricity turned off, it keeps the cold inside the chamber for a day.
ADVANTAGES
- Very low power consumption.
- Easy electronic control.
- There is a folding shelf.
- Very large capacity.
- High quality glass shelves are used.
- Long autonomous preservation of cold.
- The refrigerator is not very noisy.
- Long warranty period (2 years).
LIMITATIONS
- No No Frost support.
- Some copies have minor assembly problems.
Samsung RB-30 J3000WW
A very simple model. The "Super Freeze" mode provides a productivity of 13 kg / day. Energy efficiency class A+. The volume of the refrigerating chamber is 213 liters. The freezer has a capacity of 98 liters and has three drawers. Doors can be repositioned. The unit itself weighs 66.5 kg.
ADVANTAGES
- Low cost.
- Easy electronic control.
- Great freezer capacity.
- Implemented No Frost support.
- Very long autonomous cold storage.
- Great freezing power.
- Not very heavy weight.
LIMITATIONS
- Many instances are very noisy.
- Very small egg cup.
- There is no way to rearrange the shelves.
Weissgauff WCD 486 NFB
The refrigerator has three chambers and four doors.
The total volume of the Weissgauf WCD 486 NFB refrigerator is 401 liters. The frost protection system effectively maintains the temperature in the chamber without icing or antifreeze. The case is smooth, made of black glass. It is easy to wash. Operation modes are controlled from an external display. It displays all settings.
ADVANTAGES
- It is huge, roomy, without defrosting, everything fits in it.
- In addition to all of the above - he is also super handsome, which is very important!
- In general, everything is excellent. Quiet, roomy, ergonomic, pleasing to the eye design, optimal in terms of price / quality ratio.
- Design, functionality, convenient freezer, refrigerator shelves are adjustable, allowing you to put large pots.
LIMITATIONS
- Without flaws for this price - it's rare.
How to choose an inverter refrigerator
At home, I want to choose a refrigerator that is large inside, but small on the outside. To use little electricity. But it froze a lot and quickly. So that he himself could do a lot, and the owner controlled with one button. And so on and so forth.
Brand
Experts recommend buying products from well-known companies, for example Samsung, Liebherr, LG, Siemens, Bosch. These firms have earned credibility over the years, their products are in great demand, despite the high price. Savings are obtained by minimizing the number of repairs and high energy efficiency. New models from leading companies always outperform previous designs.
Performance characteristics
The list of performance characteristics of a modern refrigerator is a long list. For example, the characteristics of the Samsung RB-30 J3000WW refrigerator.
All characteristics
factory data
- Country of manufacture: Poland.
- Model series: rb30j3000ww series
- Model: rb30j3000ww
dimensions
- Height: 178 cm.
- Width: 59.5 cm.
- Depth: 66.8 cm.
Volume
- Total volume: 332 l.
- Refrigerator volume: 213 l.
- Freezer volume: 98 l.
- The location of the freezer is at the bottom.
Defrost system
- Defrosting the refrigerating chamber: automatic (No Frost).
- Freezer defrosting: automatic (No Frost).
Refrigerator shelves
- Shelves in the refrigerator: 4.
- Shelves on the refrigerator door: 4.
Compartments in the freezer
- Drawers in the freezer: 3.
Freezer
- Freezer class: ***.
Performance
- Freezing capacity: 13 kg/day.
Temperature
- Minimum temperature: -23 °C.
Operating modes
- Operating modes: superzamorozka.
Climate class
- Climate class: SN-ST.
Door
- Number of doors: 2.
Frame
- Number of cameras: 2.
- Compressor type: inverter.
- Number of compressors: 1.
- Case material: plastic/metal.
Main characteristics
- Design features: reversible doors.
Security
- Power off storage: 20 hours
energy efficiency
- Energy efficiency class: A+.
Display
- Display type: in camera.
Control
- Management: electronic.
Noise level
- Maximum noise level: 40 dB.
Equipment
- Delivery set: mold for ice.
Color
- White color.
Weight
- Weight: 66.5 kg.
You have to make a decision for yourself on each point.
Conclusion
The refrigerator is bought for a long time and is not cheap. You need to carefully prepare for the purchase, talk with experts, with owners of different models. You need to think about how much volume is needed and where it will have to be placed.
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