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The content of the materials:hand, so you can make a balanced choice in the selection of technology.

Asynchronous

Both two-phase and three-phase motors are used in washing machines. But since the 2000s, the first type went into oblivion, and today more compact motors are used in 3 phases and with the ability to regulate the speed of turns.

They are arranged in this way: their design provides for two parts - the stator( immovable) and the rotor( which provides rotation of the drum).This motor can rotate up to 2.8 thousand revolutions per 1 minute.

The weak side of the asynchronous type engine: the weakening of the torque, which causes the drum to sway and the loss of power during rotation. But if in your washing machine there is an asynchronous type engine, it means that these advantages await you:

1. the design of the element and the entire machine is extremely simple;
2. maintenance is relatively easy - it is enough to periodically change the grease or bearings;
3. silent operation;
4. low price.

Experts attribute the following points to minuses:

• impressive dimensions of the part;
• not too high coefficient of performance( COP);
• complex electrical circuit management.

In the powerful AMS of recent years, such motors are no longer used. They can be found only in simple models from a low price category.

Collector

8 out of 10 household appliances in their design provide just such ED.In the washing machines collector engines began to be used since the beginning of the 90s, and after a decade almost asynchronous two-phase analogues were almost completely supplanted. Their main plus is universality and operation from direct and alternating current.

The design of the collector type engine is as follows:

1. stator;
2. collector rotor;
3. tachogenerator( a device that controls the speed of rotation);
4. aluminum housing;
5. at least a pair of brushes, providing contact between the rotor and the engine.

Important! Brushes rub against a collector, therefore wear out over time and require replacement. You can see erased brushes by sparks from under the CMA bottom panel.

Advantages:

• modest size;
• impressive starting torque;
• lack of frequency reference;
• possibility of smooth control of the number of revolutions;
• versatility;
• space in the management of the electrical circuit;
• high speed.

Cons:

• modest service life;
• fast-wearing parts - brushes;
• noisy work.

The disadvantages include the risk of interturn circuit( winding punching), which causes a loss of power or a spark.

Direct Drive

The so-called inverter motor is used by LG, whose experience was later adopted by other brands. These electric motors entered the market in the mid-2000s and immediately came to taste to customers for a number of indisputable advantages. Today, direct-drive engines can be found in washing machines of the following brands: Samsung, Heyer, Whirlpool, Hotpoint-Ariston, Bosch, AEG and others.

The possibility of using the brushless technology made it possible to make the SM less bulky and maintain the performance of other parts. As in the previous type of engine, the inverter has a rotor and a stator, but the principle of operation is different. The main difference is in the drive. It is directly connected to the drum, so there is no belt drive in the washers.

Note the advantages:

1. intuitive design;
2. convenient structural placement in the instrument case;
3. modest dimensions of the motor itself;
4. reduced vibration level CM;
5. highest efficiency of all three types;
6. lack of parts requiring constant maintenance( brushes, belt);
7. silent operation.

Of the shortcomings, experts single out only the fact that the control scheme of such an engine is much more complicated than that of analogs. This is directly proportional to the price of such stiraloc.

Now you know which engine in the washing machine is the most powerful and quiet. It remains to understand only what is better and what to choose.

What type of engine is better than

? When figuring out what type of engine to buy a car with, decide first of all on the requirements for future washing.

If you are ready for more noisy work and continuous maintenance of the machine, but want to save a lot, buy the MCA with a collector engine. If the price does not matter to you, but power, noiselessness and durability are priority, then it is better to give preference to a machine with an inverter motor.

Caution! Warranty from the manufacturer on the brushless motor for at least 10 years! But this does not negate the risk that other parts of the machine will deteriorate much earlier than the warranty period for the engine expires.

We wish a balanced and wise choice.