Electrical cabinet with high protection level

Abstract

The invention provides an electrical cabinet with a high protection level, which comprises a cabinet body, an electrical assembly and a heat dissipation assembly, wherein the electrical assembly and the heat dissipation assembly are arranged side by side along the length direction of the cabinet body, the heat dissipation assembly comprises a heat dissipation air duct, a refrigeration element anda heat dissipation fan, and the refrigeration element and the heat dissipation fan are arranged in the heat dissipation air duct; two ends of the heat dissipation air duct are provided with an air inlet and an air outlet which are communicated with the electrical assembly, and the internal pressure of the heat dissipation air duct is less than the pressure of the position of the electrical assembly in the cabinet body, so that a circulating heat dissipation channel is formed between the heat dissipation air duct and the electrical assembly. The electrical cabinet has the advantages of good heat dissipation effect, high protection level, compact layout and the like.

Description

technical field [0001] The invention relates to an electric cabinet, in particular to an electric cabinet with a high protection level. Background technique [0002] At present, due to the need for extreme environment operation of electric equipment, pollution, dust, condensation, etc. entering the cabinet of electric equipment may easily lead to discharge of electrical equipment busbars, affect the service life of the equipment, and even cause safety accidents. For this reason, electrical cabinets with high protection levels (such as inverter cabinets) have emerged as the times require, which can provide reliable guarantees for the normal operation of internal power devices. However, the existing electrical cabinets with high protection levels have the following problems: [0003] (1) In order to ensure the high protection level of the cabinet, the inside of the cabinet is a completely airtight environment, that is, the inside of the cabinet does not exchange air with the ...

AI Technical Summary

Problems solved by technology

[0003] (1) In order to ensure the high protection level of the cabinet, the inside of the cabinet is a completely airtight environment, that is, the inside of the cabinet does not exchange air with the outside world, which prevents the heat generated by the heating devices inside the cabinet from being taken away, resulting in the cooling effect of the devices in the cabinet poor, seriously affecting the service life of key components, and even serious accidents; at the same time, the heating of components has also become the main reason for hindering the improvement of the power density of the electrical cabinet, making the internal electrical equipment unable to be compactly arranged

At present, electrical equipment is usually cooled by forced air cooling or water cooling, but the cabinet needs to be ventilated in the above way, which affects the dustproof and waterproof effect of the cabinet, and the humidity inside the cabinet cannot be controlled, which is easy to cause condensation Phenomenon, affecting the protection level of the electrical cabinet

[0004] (2) In order to prevent deformation when welding the cabinet body, the method of breaking welding of sheet metal parts is usually used. This method is likely to cause gaps in the splicing position of the cabinet body, resulting in pollution, water vapor, etc. entering the cabinet body from the splicing point, causing internal pollution of the cabinet body environment, which affects the service life of electrical equipment, which cannot meet the requirements of high protection levels

At the same time, the gap between the cabinet body and the hinged position of the cabinet door is also prone to water leakage.

[0005] (3) Strong current circuit wiring and communication electrical connections (such as busbars) need to pass through the cabinet, and there are gaps between them and insulating fixtures such as epoxy parts, resulting in poor sealing of the cabinet and affecting the protection level of the cabinet

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