Humidity Proof System of Electric Control Box

摘要

In the summer rainy season, the electric control box in a place such as an underground parking facility stops due to condensation. In the process of discharging the upper ventilator fan to the outside in order to discharge the hot heat inside the electric control box, moisture from outside flows into the electric control box through the inlet at the lower part, resulting in condensation. This problem is improved by utilizing the existing method. In addition, by mobilizing the separation by space and time described in TRIZ, this problem is fundamentally solved with a much simpler composition and idea. ① As in the existing method, moisture is removed by introducing cold wind from the outside through a dehumidifying agent such as activated carbon, and the air around the hot internal electronic products is discharged to the outside, but the dehumidifying agent such as activated carbon is dried at the outlet. Conversely, it can be solved by repeating the method of changing the direction of the wind in the opposite direction so that external cold wind is introduced through a dehumidifying agent such as activated carbon at the outlet. ② In this case, in order to cool the hot internal electronic product, it is not a method of directly blowing the external cold wind, but passing the external cold wind through an intermediate medium such as a hose, which is arranged over a wide range around the hot internal electronic product. By doing so, it cools the air around hot electronics. This indirectly cools the hot internal electronics as a result. Therefore, it fundamentally blocks external moisture from directly accessing the internal electronic products. ③ Otherwise, it detects in advance that the relative humidity of the outside is high and automatically stops the cooling fan that introduces the outside air, allowing only air circulation due to natural convection. Accordingly, not only does it prevent the inflow of external moisture actively, but also decreases the relative humidity due to the increase in the internal temperature due to the heat of the hot internal electronic product, and consequently prevents condensation due to moisture, thereby stopping the internal electronic product Solve the problem.