Characteristics Of Hot Water Circulating Pump

Oct 18, 2021

1. Brush DC water pump: when the water pump operates, the coil and commutator rotate, the magnetic steel and carbon brush do not rotate, and the replacement and change of the coil current direction is completed with the commutator and brush rolling by the motor. As long as the motor rolls, the carbon hot water circulating pump brush will be worn. When the computer water pump operates to a certain extent, the wear gap of the carbon brush will become larger and the sound will increase, After hundreds of hours of continuous operation, the carbon brush can not play the role of reversing.

Advantages: low price.

2. Brushless motor type DC water pump: the motor type brushless DC water pump is composed of Brushless DC motor and impeller. The shaft of the motor is connected with the impeller, and there is a gap between the stator of the water pump and the rotor of the self suction pump. The water of the suction pump will soak into the motor for a long time, which increases the possibility of burning out the motor of the hot water circulating pump.

Advantages: brushless DC motor has been standardized and produced in large quantities by special manufacturers, with low cost and high efficiency.

3. Brushless DC magnetic drive water pump: the brushless DC water pump adopts electronic component commutation without carbon brush commutation, and selects high-performance wear-resistant ceramic shaft and ceramic shaft sleeve. The shaft sleeve is connected with the magnet through injection molding to avoid wear. Therefore, the service life of Brushless DC magnetic water pump is greatly enhanced. Some of the stators and rotors of the magnetic barrier water pump are completely blocked. Some of the stators and circuit boards are filled with epoxy resin and 100% waterproof. Some of the rotors are permanent magnets. The water pump body is made of environmental protection data, with low noise, small volume and stable performance. It can adjust various required parameters through stator winding, and can operate under wide voltage.

Advantages: long life, low noise, up to 35dB or less, can be used for hot water circulation. Some of the stator and circuit boards of the motor are sealed with epoxy resin and completely blocked from the rotor, which can be installed underwater and completely waterproof. The axis of the water pump adopts high-performance ceramic shaft, with high precision and good seismic resistance.

The traditional brush water pump and motor type brushless water pump are structurally connected directly between the motor shaft core and the rotor impeller, and the shaft sealing method is selected. During operation, the shaft core and the sealing gasket are in direct conflict, and the service life is very short. Its structure is doomed to be very difficult to do a good job in wear resistance and waterproof; Moreover, in order to improve the waterproof performance, grease should be added between the shaft and the gasket, which restricts the professional limitations.

The DC brushless water pump adopts magnetic transformation to replace the traditional water pump structure. The motor and rotor impeller are completely blocked by a waterproof chamber to completely solve the sealing problem. Some rolling use the perfect connection between zirconia and graphite to reduce the mechanical conflict, longer service life and lower noise. Due to the selection of brushless motor, the function of water pump has also been improved: speed regulation, FG signal output, overvoltage maintenance, overcurrent maintenance, anti slip maintenance, over temperature maintenance, low-voltage solar startup, etc.