Water pump is an indispensable life tool for every family. Although most people do not realize this, it is true. Many people are not very clear about water pumps. Here is a brief introduction to the classification and model specifications of the DC water pump.
Types of DC water pumps:
1. Brush DC water pump
2. Brushless DC water pump (motor type)
3. Brushless DC water pump (magnetic drive isolated type)
The characteristics of three types of DC pumps:
1. Brushed DC water pump: When the water pump is working, the coil and commutator rotate, the magnetic steel and carbon brushes do not rotate, the alternating current direction of the coil is completed by the commutator and brushes that rotate with the motor, as long as the motor rotates The carbon brushes will wear out. When the computer water pump runs to a certain level, the carbon brush wear gap becomes larger, and the sound will increase accordingly. After hundreds of hours of continuous operation, the carbon brushes can no longer play a role in commutation.
Advantages: Low price.
2. Brushless motor type DC water pump: The motor type brushless DC water pump is composed of a brushless DC motor and an impeller. The shaft of the motor is connected with the impeller, and there is a gap between the stator and the rotor of the water pump. If it is used for a long time, water will penetrate into the motor and increase the possibility of motor burnout.
Advantages: Brushless DC motors have been standardized and mass-produced by specialized manufacturers, with relatively low cost and high efficiency.
3. Brushless DC magnetic drive water pump: The brushless DC water pump adopts electronic component commutation, no carbon brush commutation, and adopts high-performance wear-resistant ceramic shaft and ceramic bushing. The bushing is integrated with the magnet through injection molding. Avoid wear and tear, so the service life of the brushless DC magnetic water pump is greatly enhanced. The stator part and the rotor part of the magnetically isolated water pump are completely isolated. The stator and the circuit board are potted with epoxy resin, 100% waterproof, the rotor part is made of permanent magnets, and the water pump body is made of environmentally friendly materials, with low noise, small size and performance stability. Various required parameters can be adjusted through the winding of the stator, and it can be operated at a wide voltage.
Advantages: Long life, low noise up to 35dB or less, can be used for hot water circulation. The stator and circuit board of the motor are potted with epoxy resin and completely isolated from the rotor. They can be installed underwater and are completely waterproof. The shaft of the water pump adopts a high-performance ceramic shaft with high precision and good shock resistance.
