Huizhou washing machine heating method and motor structure

- 2019-10-30-

The heating function of Huizhou washing machinery is a necessary existence, because for many linens, the effect of cold water washing does not meet the standard requirements. Similar tablecloths, work clothes, towels and bedclothes, which have a lot of oil stains, need to be cleaned at high temperature before they can have a good washing effect. There are two heating methods for Huizhou washing machines, one is electric heating and the other is steam heating. And not only washing machines require boilers, there are other equipment, such as ironing machines and drying machines, but also steam to assist in better operations. Next, Guangzhou Pearl River Washing will share relevant content for us, and I hope to clear up our doubts.
Huizhou washing machinery generally chooses steam heating methods, and it is used by some relatively large washing service providers, such as water washing plants and clothing factories. Some small units, such as hotels and guesthouses, still choose more electric heating methods. There are two reasons for the failure of electric heating. One is that the AC coil is abnormal, and the other is that the electric heating tube has lost its thermal effect. However, in any case, once abnormalities are found, they must be repaired in time. In order to ensure the overall operating efficiency of the washing machine, it is necessary to ensure that all facilities can be used normally around the clock.
The motors used in washing machines mainly include three types of capacitor-operated two-speed motors, single-phase series-excited motors and DD direct-drive variable-speed motors. Typical washing machines usually use capacitor-operated two-speed and single-phase series-excited motors , And the DD direct drive variable speed motor is the dry flow in the new drum laundry.
1. Capacitor-operated two-speed motor The capacitor-operated two-speed motor can also be referred to simply as a two-speed motor.
There are two sets of windings in the motor, which are on the same stator core. The two sets of windings are 12-pole low-speed winding and 2-pole high-speed winding. In the washing process, because the low-speed winding operation drives the drum to wash clothes, it can also be called washing motor winding. In the dehydration process, the high-speed winding works to drive the drum to wash and run at high speed, and the moisture in the clothes is thrown out, so it can also be called the dehydration motor winding.
The 12-pole winding is a washing motor winding, which is composed of a positive winding, a secondary winding, and a common winding. The 2-pole winding is a dehydrated motor winding, which is composed of a positive winding and a secondary winding.
The positive and secondary windings in the washing motor winding control the motor to run in the forward and reverse directions, so they have the same wire diameter, number of turns, pole pitch and pitch. The diameter, number of turns, pole pitch, and pitch of the common winding are different from those of the primary and secondary windings. These three windings are selected by Y-connection, and the three windings are 120 °.
Dewatering motor windings can only run in one direction, so there are obvious differences between the positive and secondary windings. The diameter of the positive winding is thick, the number of turns is small, and the DC resistance is small; the diameter of the secondary winding is thin, the number of turns is large, and the DC resistance is large.
The common ends of the two sets of motor windings are connected together to form the common end of the two-speed motor. When the washing motor winding (12-pole winding) is connected, the washing machine drives the drum at a low speed to complete the washing function. When the dehydration motor winding (two-pole winding) is connected, the washing machine drives the drum at high speed to complete the dehydration function. And it is controlled by a program controller, interlocking the two sets of motor windings, and does not allow the two sets of motor windings to run together.
The two-speed motor is started by the starting capacitor. The starting capacitor sends the starting signal to the circuit board of the program controller. After the circuit board processes the signal sent by the starting capacitor, it is input into the motor and the two sets of windings of the motor are separated Start / Stop control.
2.Huizhou washing machine single-phase series excitation motorSingle-phase series excitation motor is mainly composed of four parts: magnetic pole, electric drive, brush and commutator, while the two important parts are the static part (stator) and the rotating part (rotor) And armature). Single-phase series-excited motors change the direction of rotation by changing the polarity of the stator field winding and the rotor winding in series to complete the rotation of the motor in different directions. The single-phase series-excitation motor is used in cooperation with the electronic governor. After changing the output voltage of the electronic governor, the speed of the motor is changed.
3, Huizhou washing machine direct drive variable frequency motor DD direct drive variable frequency motor is a type of motor commonly used in new washing machines. DD direct drive variable frequency motor is mainly composed of stator core, rotor core, coding disc, frame, radial bearing, etc. The radial bearing can withstand a certain axial force, which makes the DD direct drive motor rotate stably during operation. . The stator core is composed of a permanent magnet and a winding. The magnetic field generated by the permanent magnet and the magnetic field generated by the coil generate magnetic force and act on the backlash, so that the washing machine rotor rotates in the direction of the backlash magnetic field.

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