Air-cooling heat-dissipating frequency converter

Abstract

The invention discloses an air-cooling heat-dissipating frequency converter comprising a case. A panel is installed at the front side of the case. An air inlet pipe communicated with the inner cavityof the case is welded to the middle part of the upper surface of the case; and a fan is installed in the air inlet pipe. A cooling cabinet is welded to the outer side of the top of the case; the air inlet pipe is arranged at the inner side of the cooling cabinet; and a gap is formed between the top of the air inlet pipe and the top of the cooling cabinet. Besides, air inlets are formed in the twosides of the cooling cabinet. According to the air-cooling heat-dissipating frequency converter, electrical appliance elements like a circuit board can be installed by using screw holes formed in mounting bars. Separation bars are arranged at the back of the inner cavity of the case at equal intervals and heat caused at the back of the electrical appliance elements can be taken away by air flows through channels formed among the separation bars, so that heat radiation is balanced, the electrical appliance elements are protected from being damaged, and the working stability and the service lifeof the frequency converter are improved; and because of opening of straight slots formed in the separation bars, the air flowing becomes balanced, so that the cooling effect is optimized.

Description

technical field [0001] The invention relates to the technical field of frequency converters, in particular to an air-cooled and heat-dissipating frequency converter. Background technique [0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. The frequency converter is mainly composed of rectification (AC to DC), filter, inverter (DC to AC), braking unit, drive unit, detection unit, micro-processing unit, etc. The frequency converter adjusts the voltage and frequency of the output power supply by switching off the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions , such as overcurrent, overvoltage, overload protection, etc. ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an air-cooled and heat-dissipating frequency converter, which solves the problem that due to the large number of electrical components in the frequency converter and the relatively compact distribution of the electrical components, when the frequency converter is working, the internal A lot of heat, the current heat dissipation channel layout in the inverter is not reasonable enough, resulting in the problem that it is difficult to fully discharge the heat inside the inverter

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