Inverter motor in a washing machine: what is it and why is it needed?
Inverter motors can be called the latest development of manufacturers. Until recently, they were used in microwave ovens and air conditioners. And now, at the instigation of Japanese and Korean brands, washing machines have also acquired these motors.
By equipping new models of household appliances with such innovation, manufacturers managed to solve several problems at once and bring their products to a fundamentally new level. An inverter motor lasts longer because it is more resistant to wear and tear. In addition, its technical characteristics are much higher than previous models.
Design Features
Converting alternating current to direct current is the basic principle on which the inverter motor in a washing machine operates. What does it mean? The motor is able to create a current of the desired frequency, thanks to which it is possible to more accurately regulate the rotation speed and speed.
There are also differences in the design of the motor: there are no brushes here, unlike the usual brushed motor. And the movement occurs due to electromagnetic fields.
Principle of operation
The key difference between an inverter motor and a commutator motor is the type of drive (in an inverter motor it is direct, in a commutator motor it is a belt drive). And such an engine does not require the placement of brushes.
Achieving the required current frequency is achieved due to the fact that the design solution includes such a component as a frequency converter. It is this element that allows you to most accurately control the speed of rotation of the washing ram.
The operating principle is based on the inversion of electric current. The engine speed is controlled by the inverter. The voltage conversion occurs immediately, only then does it enter the stator. Thanks to this point, the user has the opportunity to scrupulously control the entire wash progress. And the absence of brushes allows the machine to spin at high speeds.
You can set the required program using mechanical or electronic control. In other words, using mechanical controls (buttons in a more advanced variation) or one single start button. Models with button panels are considered more durable. But electronic technology is much more convenient to use. She will do everything herself: she will weigh the laundry and determine how long it takes to wash it.
Washing machine inverter motor: pros and cons
This type of engine has both positive and negative qualities. The first includes an increase in efficiency - less energy is required to rotate the engine, since there are no parts rubbing against each other. And, as you know, the less energy a motor consumes, the more economical and beneficial it is for the user.
The inverter motor is more durable and does not require regular maintenance. Whereas the brush one will need to be periodically disassembled, brushes and other parts replaced. In addition, the noise level of a machine with an inverter motor is minimal.
But it is not without its shortcomings. These include, for example, the higher price of washing machines with inverter motors. Consumer reviews also indicate the high cost of components and replacement parts that will be needed in the event of a breakdown. So decide for yourself whether it’s worth overpaying for this type of motor.
Specifications
Inverter-type washing machines have the following characteristics:
- High spin speed.
- Low power consumption.
- Low water consumption.
- Low noise level.
- Possibility to select a washing program.
- Delay start.
- Automatic shutdown.
Noise level and power consumption
For most users, this criterion is not that important. But there are buyers for whom complete silence during washing is fundamentally important. For example, you have a small child in the house or you want to focus on reading.
Of course, an inverter motor is quieter than a brush motor. But it is important to remember that the main noise when operating a washing machine is not made by the motor itself, but by the pump and the metal drum, which rotates intensively - especially during spinning.
The inverter-type engine practically does not hum, but also makes specific sounds. True, this also depends on many other factors - up to the floor covering and how horizontal the machine is.
As for energy savings, it is insignificant and amounts to only 2-5%. Experts say: the main level of energy consumption comes from the operation of the heating element, and not from the motor itself.
Review of popular models
The models of the best inverter washing machines are presented below.
Electrolux EWW5 1685WD
The machine is front-loading, very spacious and convenient. Like most washing machines from this company, it has electronic control. The machine is characterized by class A. There are some special programs: steam treatment, a sensor system that itself determines the operating parameters.
Pros of the device:
- High performance.
- Economical.
- There are special modes: drying and steam cleaning, child lock, leak protection, delicate wash mode.
- All information is displayed on the display.
- Loading laundry – up to 8 kg, drying – up to 4 kg.
- Electronic control.
Disadvantages of the device:
- High price.
- Solid dimensions.
LG F-1096 ND3
The model from the South Korean manufacturer is front-loading and can hold up to 6 kg of laundry. Management includes 13 different programs. Energy efficiency class A, spinning and washing – class C. The convenient thing about this device is that it can be easily integrated into kitchen furniture, since the top cover is removable.
Advantages of the model:
- Works quietly.
- Economical.
- Easy to use.
- Can be installed in the kitchen.
- There is protection against leaks.
- Child lock.
Disadvantages of the model:
- Spin up to 1000 rpm.
- High price.
AEG L576272 SL
An excellent option for a large family. The machine can hold up to 6.5 kg of laundry. With this model you can wash items of different fabrics, as there are 16 different washing modes. Depending on the type of fabric, the machine itself will select the washing time thanks to the OptiSense intelligent technology. The model also has a new feature - a special dispenser for detergents, for their optimal use during washing.
Advantages of the device:
- Convenient controls.
- Lots of different modern features.
- Large capacity.
- Wide range of modes.
- Effective security system.
Disadvantages of the device:
- High noise during spin cycle.
- No shoe washing mode.
Siemens WD15 H541
An excellent washing machine for people who love quality first. The model is roomy, economical, with very convenient controls. All information is displayed on the display; there is backlighting in the dark. The washing machine has been assigned a high class (A), both in energy efficiency and in washing and spinning. There is an impressive range of functions for any fabric.
Advantages of the model:
- Efficiency.
- Economical.
- Roomy (up to 7 kg).
- Protected from leaks.
- Child lock mode.
- Quiet operation.
Disadvantages of the device:
- Large consumption of oxen.
- There is no washing option for sportswear.
Bosch WLT 24440
Economical device with a wide range of functions. Another advantage is the low cost of the device. All basic and additional functions are present in the model, the security system is at a high level. Spin speed is up to 1200 rpm, there are night mode and quick wash functions.
Advantages of the device:
- Large selection of modes.
- The energy efficiency class is high.
- Excellent quality.
- Reasonable price.
- Low water consumption.
Disadvantages of the model:
- There is no compartment for liquid detergents.
Samsung WW70K62E00W
Narrow type washing machine, front loading. The newest function is used - bubble washing. One of the best models from this manufacturer, efficient and made using the latest technology. It has a large drum, a laundry reloading function, and a security system.
Advantages of the model:
- Roomy.
- It works silently.
- Cleans well.
- Effective security system.
- Clear controls.
- Application of new technologies (bubble washing, reloading function in a separate door).
- Drum cleaning without chemicals.
- Stylish design.
Disadvantages of the device:
- The melody plays for a long time at the end of the wash.
Hotpoint-Ariston RST 7029 S
Inverter washing machine from an Italian manufacturer. There is a display, electronic control, very roomy and economical. A wide range of functions allows you to choose the one you need. The security system and foam formation control are at the proper level.
Advantages of the device:
- Economical consumption of water and electricity.
- Spacious drum.
- High class (A).
- Low noise level.
- A wide choice of programs.
- There is a steam washing function.
- The controls are simple and convenient.
- Large hatch.
- Possibility of changing the spin speed and washing temperature during operation.
Disadvantages of the device:
- There is no protection against voltage surges in the network.
Brands of inverter washing machines
LG became a “pioneer” in the household appliances market. It was she who introduced the first washing machines with inverter motors. For example, an LG washing machine with a Direct Drive inverter motor is popular among users. In addition to the innovative motor, it is distinguished by an improved drum design, ample adjustment options and a convenient door.
In addition to the motor, LG developers fundamentally changed the drum itself. Its surface is not perfectly smooth, but seems to be covered with water bubbles of various diameters. The laundry grips also became of a different shape and of greater height. All these innovations are designed to solve two important problems: improving the quality of washing and the most delicate effect on the fabric, without wrinkles.
Many European manufacturers picked up the idea. Today, inverter motors can be found in washing machine models from Whirlpool, Electrolux, Candy and other brands. It is also believed that such an engine is more reliable. For example, AEG provides a ten-year warranty on brands of washing machines equipped with this type of motor.
In addition to durability, user efficiency has also increased. Thanks to a smoother start, there is less wear on the engine, so you are unlikely to have to think about replacing it.
Other innovations
Manufacturers care not only about engine life, but also about reliability, noise reduction and other user characteristics. For example, the Siemens brand has developed a unique PowerDrive engine that lasts longer than usual.
Asko models use induction motors. Bauknecht sells washing machines with silent ProSilent electric motors. The manufacturer also gives them a 10-year warranty. And if you trust domestic brands, the Atlant washing machine with an inverter motor made in Belarus deserves attention.
How to properly handle the car?
It is important to know a few nuances if your choice is an inverter motor in a washing machine. You will be told what this is and what the dangers are during installation - after all, the floor surface must be perfectly flat, without slopes. The washing machine must be operated with constant pressure. The standards for a specific model can be found in the instructions.
The powder or liquid detergent must be marked Automat - this way you will protect the engine from overloads and extend its “life”. In addition, you should not wash too often, placing one piece of laundry after another. Any car needs a rest, at least a couple of hours between washes.
If you decide to buy a washing machine with an inverter motor, take the time to familiarize yourself with all its characteristics and weigh all the pros and cons of such a decision. As a rule, these models are more expensive than regular ones, so consider your purchase carefully.
Subtleties of repair
Manufacturers of inverter washing machines claim that such equipment is not intended for household repairs. The best option in this case is system testing, of course, if the unit has such capabilities.
After self-diagnosis, you can detect the fault code and begin to eliminate it. Before starting testing, you should remove the hatch and take out all the laundry.
If you want to remove the inverter, you should follow the diagram:
- disconnect the unit from the power supply;
- unscrew the bolts and remove the panel from the back;
- find the screws under the rotor, which are designed to attach the wiring, and unscrew them;
- before starting to disconnect the wires, it is worth photographing or sketching their correct location;
- remove the central bolt that holds the rotor, holding the elements to prevent them from rotating;
- remove the rotor assembly, then the starter;
- disconnect each wire connector.
After carrying out all the above procedures, you can check the engine. Next, it is worth assessing the integrity of the rotor winding. To create a new motor winding, you will need to call a specialist. To replace the engine, a new one is installed in place of the old device.
To increase the service life of the inverter motor, you will need to take the following preventive measures:
- correctly connect the washing machine to the network;
- use equipment carefully;
- use powders with the “Automatic” icon;
- do not add large amounts of detergent;
take a break of several hours between washes.
