As an important equipment in modern fluid transmission technology, the brushless DC water pump is widely used in various industries due to its advantages of high efficiency, energy saving and low noise. However, in actual use, we often encounter problems such as noise, vibration and heat. These problems will not only affect the normal operation of the water pump, but also reduce the durability and reliability of the equipment, and even affect the user experience. Below, the X-TEAM editor will introduce you to the solutions to these problems.

1. Noise problem

1) Electromagnetic noise:

Cause: The magnetic slot effect generated by the magnetic field. When the magnet in the rotor cuts the stator teeth, it generates magnetic force. When the magnetic force is transferred from one tooth to another, it will help or prevent the rotation, causing the rotor to accelerate or decelerate regularly, thereby generating uneven magnetic pull and causing the slot effect.

Solution: From a design perspective, electromagnetic noise can be reduced by refining the design of the motor, considering the details of slot selection, structure, process, parameters, etc., and adjusting the design of magnetic steel and punching. For the water pumps that have been produced, methods such as increasing the air gap length, reducing the thickness of the magnetic steel, and reducing the magnetic density can be considered to reduce noise.

2) Mechanical noise:

Reason: The unreasonable matching of bearings and end covers, and the large axial clearance will generate noise.

Solution: Check and adjust the matching of bearings and end covers to ensure that the axial clearance is within a reasonable range. If the bearing is damaged, replace it with a new one in time.

2. Vibration problem

1) Installation problem:

Reason: The installation of the brushless DC water pump is not correct, such as improper fixing method, unstable bracket, etc.

Solution: Ensure that the water pump is correctly installed on a hard and flat ground or on a stable bracket. At the same time, check and adjust the concentricity of the coupling to avoid vibration caused by excessive concentricity deviation.

2) Inlet and outlet pipe diameter problem:

Reason: The inlet and outlet pipe diameters are not configured according to the standard diameter, resulting in a small water inlet and a small water outlet, which causes vibration.

Solution: Configure the inlet and outlet pipes according to the standard diameter provided by the manufacturer to ensure that the water inlet and water outlet match.

3. Heating problem

1) Power supply voltage problem:

Reason: Too high or too low power supply voltage will cause the motor to heat up. When the power supply voltage exceeds the rated voltage of the motor by more than 10%, the motor iron loss will increase; when the power supply voltage is lower than the rated voltage of the motor by more than 5%, the motor will heat up when running at rated load.

Solution: Adjust the level of the transformer tap switch to adjust the power supply voltage to the normal range. At the same time, ensure that the three-phase power supply voltage is balanced to avoid the phase voltage imbalance exceeding 5% and causing the motor to heat up.

2) Motor load problem:

Cause: Excessive motor load or too frequent starting will cause the motor to heat up.

Solution: Reasonably arrange the use of the water pump to avoid long-term overload operation. If the load is too large, you can consider replacing a motor with a suitable capacity. At the same time, reduce the number of starts or optimize the starting method to reduce the motor load.

3) Cooling system failure:

Cause: The cooling system includes radiators, fans and other components. Failures, such as fan stops rotating, radiator is blocked, etc., will affect the heat dissipation effect of the motor.

Solution: Regularly check and maintain the cooling system to ensure its normal operation. If the fan stops rotating or the radiator is blocked, the relevant components should be cleaned or replaced in time.

The problems of noise, vibration and heating generated by brushless DC water pumps need to be investigated and solved from multiple aspects. Through reasonable installation, adjusting power supply voltage, optimizing load, maintaining cooling system and other methods, noise, vibration and heating problems can be effectively reduced.

As a leading enterprise in the field of brushless motors, X-TEAM has won the trust of customers with its advanced technology, high-quality products and good market reputation. With the continuous growth of market demand, X-TEAM will continue to be committed to technological innovation and product optimization to provide customers with more efficient and reliable brushless motor solutions. If you want to know more about “brushless motors”, you can contact online customer service. X-TEAM brushless motors provide OEM and ODM services for a long time to meet the different needs of different customers.