Cooling system and control method thereof

Abstract

The embodiment of the invention provides a cooling system and a control method thereof, relates to the technical field of refrigeration, and is used for reducing the probability that electronic devices in an electric control cabinet generate electrical short circuit faults. The cooling system comprises a cabinet, wherein an electronic device is arranged in the cabinet; the cold plate is in contact with the electronic device, and a channel is formed in the cold plate; an outlet of the condenser is communicated with the channel; an inlet of the flash evaporator is communicated with the channel; the first throttling element is arranged between the cold plate and the condenser; the controller is configured to determine a dew point temperature value in the cabinet according to the temperature value of the air in the cabinet and the humidity value of the air in the cabinet; when it is detected that the first temperature value of the cold plate is smaller than or equal to the dew point temperature value, the first opening adjustment amount of a first throttling element is determined according to the first temperature value of the cold plate and the dew point temperature value; and the opening degree of the first throttling element is adjusted according to the first opening degree adjustment amount of the first throttling element.

Description

technical field [0001] The present application relates to the technical field of refrigeration, and in particular, to a cooling system and a control method thereof. Background technique [0002] During the operation of electronic devices (such as frequency converters) in the electric control cabinet, the power electronic devices of electronic devices (such as insulated gate bipolar transistors (IGBTs)) will generate a lot of heat. If the heat cannot be dissipated in time, Electronic devices are prone to overheating and burn out. [0003] At present, the heat dissipation methods for electronic devices include air cooling, water cooling and refrigerant cooling. Among them, air cooling has low heat dissipation efficiency, large volume, high cost, and easy dust accumulation; water cooling system is more complex, easy to scale, and high cost; refrigerant cooling and heat dissipation efficiency, simple and reliable structure, small size, low cost. However, when a refrigerant is ...

AI Technical Summary

Problems solved by technology

Among them, air cooling has low heat dissipation efficiency, large volume, high cost, and is easy to accumulate dust; water cooling system is more complicated, easy to scale, and high cost; refrigerant cooling has high heat dissipation efficiency, simple and reliable structure, small size, and low cost

However, when using refrigerant to dissipate heat from electronic devices, due to the low temperature of the refrigerant, it is easy to cause electrical short circuit faults in electronic devices due to condensation.

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