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What is a brushless DC pump? - Key introduction to composition and advantages

Published:2021-08-05

Brushless DC pump refers to a pump that uses a brushless DC motor as a power source, usually with a voltage of 4.5V to 48V, to drive the brushless motor to operate. The rotation of the brushless motor drives the impeller to rotate, thereby increasing the liquid pressure to achieve the function of liquid transmission.


brushless DC pump


The application range of brushless DC pumps is very wide, especially in common household items such as tea sets, coffee machines, water heaters, water dispensers, foot baths, dishwashers, irrigation system equipment, etc. In their liquid delivery control, brushless DC pumps are also present. The casing used for coffee makers, dishwashers, water dispensers, and water pumps can be made of special food grade high-temperature resistant materials. The water pump can operate continuously at temperatures above 100 degrees Celsius, reaching food grade standards.


The brushless DC pump mainly consists of the following parts:

1. Motor: Brushless DC motor, including stator and rotor.

2. Controller: Electronic controller, responsible for controlling the speed and direction of the motor.

3. Pump body: including pump casing, impeller, etc., responsible for the transportation of liquids.


Compared to traditional pumps, brushless DC pumps have the following advantages:

1. High efficiency: Due to the absence of friction losses from brushes and commutators, the motor efficiency is higher.

2. Long lifespan: reduces mechanical wear and extends the lifespan of the motor.

3. Low noise: The brushless motor runs smoothly with low noise.

4. High reliability: Electronic control improves the reliability of the system.

5. Easy to control: The pump's speed and flow rate can be precisely controlled through an electronic controller.

6. Energy saving: Due to its high efficiency, brushless DC pumps can save a lot of energy during operation.


Tips for choosing a brushless DC pump:

1. Medium: The medium of the water pump must be considered, for example, chemical pumps require corrosion and turbidity resistance, such as clean water pumps, high-temperature pumps, etc., and the properties of the medium must be determined first.

2. Choose the pump properties, such as centrifugal pumps which do not have suction stroke, and diaphragm pumps which have suction stroke.

3. Choose the appropriate head and flow rate, which are usually indicated on water pumps

4. Choose the correct voltage and pay attention to the positive and negative poles. It is strictly prohibited to connect the positive and negative poles of a DC water pump in reverse, as the applicable voltage range is relatively small.

5. Choose the appropriate shape and diameter of the inlet and outlet.


Brushless DC pumps have become a star in the field of pump technology due to their excellent performance and wide application prospects. With the continuous advancement of technology, we believe that brushless DC pumps will play a more important role in future industry and life.


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