Control cabinet

Abstract

The invention relates to electrification control and discloses a control cabinet. The control cabinet in the present invention includes: a cabinet body and a frequency converter unit; the cabinet body includes a cabinet body and a cabinet door, the front part of the cabinet body is detachably connected to the cabinet door, and the top of the back surface of the cabinet body The position is provided with a first air outlet, and the first air outlet is installed with a first protective device for waterproof and dustproof; the frequency converter unit is placed inside the cabinet body, and the frequency converter unit includes a first fan and a housing. A fan opening is provided above the first surface in the casing, and the position of the fan opening is used for installing the first fan. The first surface is attached to the back surface of the cabinet body and the first fan is embedded in the first air outlet. The embodiment of the present invention enables the control cabinet not only to have high-level protection, but also to realize stable heat dissipation performance, thereby improving the service life of the control cabinet.

Description

technical field [0001] The invention relates to electrification control, in particular to a control cabinet. Background technique [0002] With the development of economy and society, frequency converter is widely used in various industries as a kind of energy-saving equipment, and different industries and different application fields have different requirements for the use environment of frequency converter. For example, the mining industry requires the inverter to be used in dusty and highly corrosive environments, and the air-conditioning industry requires the inverter to be used in outdoor dusty and rainy environments. The harsh and changeable environment requires the frequency converter to have both dustproof and waterproof functions, which requires the protection level system of the frequency converter or control cabinet to be above IP44 protection level. The protection level (INGRESS PROTECTION, referred to as "IP") is composed of two numbers (such as: IP×× level sta...

AI Technical Summary

Problems solved by technology

The inventor found that there are at least the following problems in the prior art: the air inlet and outlet of the frequency conversion control cabinet currently in use adopts an inner and outer double-layer structure, wherein the middle of the double layer is a sandwich cavity. On the one hand, this structure has large wind resistance and is not conducive to heat dissipation. , on the other hand, it cannot reach the high protection level of IP44

Some frequency converters adopt layered treatment, do not protect the radiator layer, but use cooling fans with IP44 protection level; the electronic component layer adopts a closed cavity design, but the temperature rise of the components in the closed cavity is relatively high bad life

Some control cabinets are treated with a high protection level. However, when the inverter is working, the hot air from the inverter unit is directly discharged into the control cabinet, which affects the service life of other components in the cabinet.

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