The cooling system of the brushless DC water pump ensures the circulation and flow of cooling water through its internal design and working principle. The following are its basic principles:

1. Motor drive: The brushless DC water pump uses a built-in brushless DC motor as the driving source. The motor converts the electrical energy provided by the power supply into mechanical energy to drive the rotor of the water pump to rotate.

2. Rotor and impeller: The rotor of the water pump is equipped with an impeller (also called rotor blade). When the motor drives the rotor to rotate, the impeller also rotates.

3. Inlet and outlet: The water pump has one or more inlets (inlets) and one outlet (outlet). The inlet is used to introduce cooling into the water pump, and the outlet is used to discharge the water pumped out by the water pump.

4. The effect of magnetic force and centrifugal force, the cooling water is sucked from the inlet and pushed to the outlet by the centrifugal force of the impeller, so as to realize the circulation and flow of water.

5. Control and regulation: The brushless DC water pump is usually equipped with a control circuit and a sensor to monitor and adjust the operating status of the water pump. These controllers can adjust the speed and water flow of the water pump as needed to meet the requirements of the cooling system.

Through the above mechanism, the DC brushless water pump is able to generate a strong water flow and ensure the circulation and flow of cooling water. Its efficient rotor design and centrifugal force use cooling water to be quickly pushed and circulated, thereby maintaining the normal operation of the cooling system and preventing the equipment from overheating.

It is worth noting that the specific design and working method of the DC brushless water pump may vary depending on the manufacturer and application field. Different water pumps may adopt different structures and technologies, but the basic principle is to drive the flow of cooling water through motor drive and centrifugal force to ensure the circulation and effect of the cooling system.