Control circuit board, electrical box, air conditioning system and control method thereof

Abstract

The invention provides a control circuit board, an electrical box, an air conditioning system and a control method thereof. The control circuit board comprises a circuit board body, wherein the firstside of the circuit board body is used for electronic component arranging, the second side opposite to the first side is provided with a heat dissipation structure, and the heat dissipation structurecomprises a circuit board heat exchanger and a cooling capacity transmission piece located between the circuit board heat exchanger and the second side. According to the control circuit board, the electrical box, the air conditioning system and the control method thereof, the cooling capacity transmission piece is arranged between the circuit board heat exchanger and the circuit board body, so that the cooling capacity of the circuit board heat exchanger can be homogenized, the cooling of the circuit board heat exchanger is more uniform, and the condensation of the circuit board heat exchangercan be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a control circuit board, an electrical box, an air conditioning system and a control method thereof. Background technique [0002] As the operating frequency of the inverter air conditioner increases, the temperature of electronic components such as IPM modules and diodes on the PCB board also rises rapidly; in order to reduce the temperature of the electronic components of the controller, aluminum alloy fins are generally used for heat dissipation The device relies on the fan blades of the outdoor unit to perform forced heat exchange to dissipate heat from the electrical box. However, the heat exchange efficiency of the aluminum fin radiator, when the power of the air conditioner increases, it is easy to cause the high temperature of the IPM module to cause the air conditioner to shut down, affecting the cooling or heating effect. In order to enhance the he...

AI Technical Summary

Problems solved by technology

However, the heat exchange efficiency of the aluminum fin radiator, when the power of the air conditioner increases, it is easy to cause the high temperature of the IPM module to cause the air conditioner to shut down, affecting the cooling or heating effect

In order to enhance the heat dissipation capacity, some air conditioners also use the refrigerant condensed by the condenser to dissipate heat from the electrical box, but the temperature of the refrigerant condensed by the condenser is low, and it directly contacts the PCB board, while the heat dissipation components on the PCB board The heat dissipation itself has the problem of different levels, and the refrigerant with too low temperature can easily form condensation in some areas of the PCB board, which will pose a threat to the reliability of the PCB board and cause electrical safety hazards

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