Company news_News_Wenling Dachang Electrical Appliance Co.,Ltd.-Commutator,Commutator accessories

What is the difference between an engine and an electric motor?

28

2021-09

What is the difference between an engine and an electric motor?

The difference between an engine and an electric motor is that the engine is connected to electrical appliances without power, and the motor is connected to power but not necessarily without other electrical appliances.

28

2021-09

Why don't AC motors use a commutator?

Generally, AC motors do not need a constant magnetic field, so there is no need for commutators, so there is no need for brushes; but the volume of AC motors is generally relatively large. The motors used in household appliances are generally AC motors, such as fans, washing machines, refrigerators, air conditioners, etc. There are no carbon brushes, but there are also DC motors. For example, many electric shavers, small kitchen appliances, electric bicycles, etc. have carbon brushes, even DC motors (excluding brushless ones). Motors using dry batteries are all is a DC motor

What is the cause of the ignition at the DC motor commutator?

28

2021-09

What is the cause of the ignition at the DC motor commutator?

1. There are sparks under normal circumstances, because there is a "slip contact" between the brush and the commutator; 2. The abnormal situation is that the spark is large; 3. The reasons for the large spark are mechanical reasons and commutation current reasons; 4. The mechanical reasons are very simple, such as wear on the surface of the commutator, wear on the brushes, abnormal pressure on the brush holder, etc.; 5. The reasons for the commutation current are: the position of the brush is not on the physical neutral line, and the wiring of the commutation pole is wrong during repair;

28

2021-09

What does a commutator consist of?

1. Chassis: Made of high-rigidity FC-25 cast iron; 2. Gears: made of high-quality and high-purity alloy steel 50CrMnT quenched and tempered, carburized, quenched and ground; 3. The main shaft is made of high-quality high-purity alloy steel 40Cr quenched and tempered, with high suspended heavy load capacity. The working principle of the commutator: The commutator is the original part of the DC permanent magnet series motor in order to allow the motor to continue to rotate. Structurally, the commutator is a circle surrounded by several contact pieces, which are connected to each tap on the rotor respectively, and two electric brushes are connected to the outside to contact with it, and only two of them are contacted at the same time. The commutator is two copper half rings with a notch in the middle. The direction of the current is changed by the commutator and the commutation effect of the brushes. 4. Bearing: equipped with roller bearing with heavy load capacity; 5. Oil seal: It adopts imported double-lip oil seal, which has high dust-proof and oil-leakage-proof ability.

27

2021-09

How does a commutator work?

The 0.4~0.6MPa compressed air is used as the power to move through the cylinder piston to make the nozzle oscillate to achieve the purpose of reversing.

News

28

2021-09

What is the difference between an engine and an electric motor?

28

2021-09

Why don't AC motors use a commutator?

28

2021-09

What is the cause of the ignition at the DC motor commutator?

28

2021-09

What does a commutator consist of?

27

2021-09

How does a commutator work?

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