How to choose high temperature resistant water pump? Why the general water pump is not high temperat

How to choose high temperature resistant water pump? Why the general water pump is not high temperature and only three-phase brushless DC can withstand high temperature

Two-phase DC brushless water pump:

The circuit board of a general DC water pump (two-phase water pump) is built into the pump body, and then encapsulated with epoxy resin. The pump body has a certain temperature rise during operation. For example, the internal temperature of the pump is running at 20 degrees. The rise will reach about 30 degrees, so that the internal temperature of the pump is about 50 degrees. When the water pump works at a water temperature of 60 degrees, the internal temperature is about 90 degrees, and the temperature resistance level of general electronic components is 85 degrees, and some can reach 125 degrees. In this way, if the internal temperature exceeds the temperature resistance level of electronic components for a long time, the life and reliability of the water pump cannot be well guaranteed.

Three-phase DC brushless water pump:

The three-phase DC pump uses sensorless technology, that is, there is no need to detect the position of the magnet through the sensor and commutate. The pump drive plate is external, and there is no need for any electronic components in the pump body. All the internal components of the pump body are made of high temperature resistant materials. Isolate the pump controller from the heat source when in a high-temperature environment, so that the pump body can directly contact the high temperature, and it can be used for a long time in a high-temperature environment.