| 摘要 |
A switch board and a control panel structure for preventing removal and inflow of humidity and corrosively hazardous gas are provided to prevent humidity, salt, and corrosively hazardous gas from flowing in the control panel by maintaining air pressure, which is the same as or higher than atmospheric pressure, within the control panel. A switch board and a control panel structure for preventing removal and inflow of humidity and corrosively hazardous gas include an outdoor air inlet, an indoor air outlet(117), an air circulator(110), and a back-flow prevention valve(118). The air circulator(110) is installed on the outdoor air inlet. The back-flow prevention valve(118) is installed on the indoor air outlet(117). The air circulator(110) enables outdoor air to flow in by a fan. The air circulator(110) enables indoor air to flow out by the back-flow prevention valve(118) when air pressure of the control panel is higher than atmospheric pressure so that the air pressure of the control panel is maintained to be the same with or higher than the atmospheric pressure. |
