According to the fan drive board power consumption is less than the total power consumption of the compressor drive board and rectifier bridge

For the heat generation of electronically controlled internal components, it can be estimated by the power consumption of the components or by the thermal imager. According to the estimation, the main heat sources inside the electronic control are compressor drive, rectifier bridge, fan drive, filter board and reactor, and the working surface temperature is between 70120 °C.

The heat source distribution design is based on the electronically controlled heat source mainly relying on the installation of aluminum radiator to dissipate heat. It is necessary to first place the compressor drive, rectifier bridge and fan drive with the aluminum radiator installed on the top of the electronic control lower layer, because the electric control distance fan here Nearly, the airflow speed is high, and the forced heat exchange effect is good. Secondly, since the filter plate and the reactor cannot be dissipated by installing the aluminum heat sink, only the heat transfer in the box and the conduction to the box can be used to dissipate heat. Therefore, it needs to be placed at the bottom of the lower layer.

According to the power consumption of the fan drive board is less than the total power consumption of the compressor drive board and the rectifier bridge, the thermal power consumption of the reactor is higher than that of the filter board. Therefore, the reactor is placed under the fan drive board, and the filter board is placed on the compressor drive. Under the board and the rectifier bridge, the heat source is balanced. At the same time, since the main heat source is located in the lower layer, the heat is floating during the emission process, so the space and components of the upper layer can store and indirectly dissipate heat, thereby realizing the effect of reducing the internal temperature of the electronic control.