Heat-radiating structure of frequency converter

Abstract

The invention relates to a heat-radiating structure of a frequency converter, which comprises an upper shell (1), a lower shell (2), a heat-radiating air flue (3) in the lower shell (2), and a fan set (4). The heat-radiating structure of the frequency converter is characterized by further comprising an air flue inner plate (5) and at least one air flue bent plate (8); the air flue inner plate (5) is fixed on the lower shell (2) and defines the heat-radiating air flue (3) together with the lower shell (2); a heat radiator (7) is clamped on the air flue inner plate (5); the air flue bent plate (8) is a bent plate which is bent on two sides and is convex in middle; and the air flue bent plate is fixed on the bottom surface of the lower shell (2) or is fixed on the front side and the back side of the lower shell (2), and guarantees that the air flue bent plate (8) and the heat radiator correspond to each other, so as to decrease the cross sectional area of the heat-radiating air flue (3) at the heat radiator (7). By using the heat-radiating structure of the frequency converter, the cross sectional area of the heat-radiating air flue at the heat radiator is effectively changed; the air flow speed in the air flue is improved; the heat-radiating effect is improved; therefore, the volume of the heat radiator further can be decreased; the weight is decreased; and the cost is saved.

Description

technical field [0001] The invention relates to a novel heat dissipation structure of a frequency converter, which is mainly used to meet the heat dissipation requirements of frequency converter power devices (inversion modules, rectification modules), and belongs to the category of electrical equipment. Background technique [0002] Inverter is one of the indispensable important devices for modern motor speed control and energy saving, and it is widely used in the industrial field. The main circuit of the inverter is composed of rectifier, intermediate circuit and inverter. During the working process, these power devices generate a lot of heat. If they cannot be effectively dissipated, the inverter will stop or be damaged due to excessive temperature. not functioning properly. In the prior art, the frequency converter will choose different heat dissipation structures according to the size of the power. For high-power frequency converters, the rectifier and inverter parts a...

AI Technical Summary

Problems solved by technology

However, this technical solution has the disadvantages of large volume and heavy weight of the radiator, which is not in line with the development trend of light and small products, and sometimes the product cost is difficult to reduce due to the large radiator

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