Case dehumidification device

Abstract

The invention relates to the field of electric control equipment, in particular to a case dehumidification device used in a humid environment. The problem that the electrical equipment is damaged dueto the fact that the case cannot be dehumidified in a humid environment can be solved, automatic or manual dehumidification of the electrical case is achieved, it is guaranteed that air in the case isdry, and the function of the electrical equipment is effectively protected. The case dehumidification device is provided with an air inlet and an air outlet, a filter screen (filter) is arranged at the air inlet, cold air in the atmosphere is sucked in by the fan and heated by a heater, and then hot air with water vapor is sent back to the atmosphere through the air outlet, so that the purpose ofdehumidification is achieved. The dehumidification device is controlled by a humidity switch and / or a temperature switch, an alternating current is automatically selected when the alternating currentexists, a built-in storage battery is automatically selected to supply power when the alternating current does not exist, and uninterrupted dehumidification is achieved. Before the main circuit boardis connected with a power supply, automatic moisture removal or manual moisture removal can be controlled through the PLC, so that circuits and electronic elements in the case are protected from being damaged by moisture.

Description

technical field [0001] The invention relates to the field of electric control equipment, in particular to a chassis dehumidification device used in a humid environment. Background technique [0002] Tunnels are designed in mountains such as high-speed rail tunnels or high-speed tunnels, or designed underground in cities such as subways, which are very humid in such an environment. When the electrical equipment is working, its own temperature can achieve the general tide-repelling effect; but when the electrical equipment is not working or placed in the tunnel for a long time, it is easy to have condensed water or infiltrate water or moisture in the case. When in use, it will cause short-circuit damage due to moisture. Especially for electronic equipment placed in the tunnel, when the electronic equipment is working, the cooling fan brings dust into the chassis, or the dust enters the chassis through the gap of the chassis, and is covered on the circuit board (because the du...

AI Technical Summary

Problems solved by technology

When the power supply chassis of the prior art works in a harsh environment, the power supply may be damaged due to various reasons

At the same time, although there is lighting equipment in the tunnel, it is impossible to achieve bright lights. It is still bright and dark, and a flashlight will be used. At the same time, when the power supply box is placed in a dark place, it is easy to trip the passing employees, which poses a great safety hazard. , you can install lights on the chassis, not only can play a role in warning, but also can play a role in lighting

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