Anti-condensation system and water/hydraulic frequency converter

Abstract

The embodiment of the invention relates to the technical field of electrification control, and discloses an anti-condensation system and a water / hydraulic frequency converter. The system comprises a temperature detection circuit, a constant current source circuit, a first comparison circuit and a driving circuit. The output of the temperature detection circuit is connected with the input end of the constant current source circuit. The second output end of the constant current source circuit is connected with the second input end of the first comparison circuit. The control end of the driving circuit is connected with the output end of the first comparison circuit. The output end of the driving circuit is connected with a valve controlling circulation of cooling liquid in the water / hydraulic frequency converter and is used for controlling opening or closing of the valve according to the output signal of the first comparison circuit. According to the invention, occurrence of condensationphenomena can be effectively prevented; the system is simple in structure and flexible to operate; and when the condensation effects are ensured, preparation cost is greatly reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electrification control, in particular to an anti-condensation system and a water / liquid-cooled frequency converter. Background technique [0002] At present, the cooling methods of inverters mainly include air cooling and water / liquid cooling. In high-power air conditioners, water / liquid cooling is used to dissipate heat. The heat is taken away by circulating water or cooling liquid. A better cooling method for frequency converter or frequency converter centralized use. [0003] However, when the water / liquid-cooled inverter is dissipating heat (that is, the inverter adopts the water / liquid cooling method), usually due to the temperature difference, the high-temperature air inside the water / liquid inverter will condense. During the operation of the device, especially when the air temperature is higher than the temperature of the cold plate, condensation is very easy to occur. Howe...

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Problems solved by technology

However, the inventor has found that at least the following problems exist in the prior art: although the PLC controller can be used to detect the temperature and make corresponding control according to the temperature, the price of the PLC controller is expensive, which will undoubtedly increase the preparation cost

Moreover, due to the complex structure and large volume of the PLC controller, it not only increases the difficulty of debugging, but also takes up more space for the water / liquid inverter

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