| 摘要 |
PURPOSE: A device for preventing self-car washing equipment from freezing and bursting by continuously injecting compressed air is provided to effectively prevent a duct from freezing for a long time with reduced costs. CONSTITUTION: A device for preventing self-car washing equipment from freezing and bursting comprises high-pressure hose pipes(50), bubble hose pipes(60), and a controller(30). Air flowing from a compressed air source is supplied to the high-pressure and bubble hose pipes through an air passage. A manual opening and closing valve(10), a water separator(11), a pneumatic regulator(12), and a solenoid valve(20) are successively arranged in the air passage. The controller electrically controls the opening and closing of the solenoid valve depending on surrounding temperature. |
