Cooling fan starting and stopping alarm system of air conditioner water chilling unit

• Main Authors: XING CHENG, LIU FENGRONG, WANG JIANWEI, JIA RUIYAN, CHU CHUNXUE, LI GANG
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2019
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

Provided is a cooling fan start and stop alarm system of an air conditioner water chilling unit. The utility model relates to a start and stop alarm system for a cooling fan of an air-conditioning water chilling unit. The live wire L is connected with one end of the power switch K1; the other end of the power switch K1 is connected with the L end of the temperature controller U1 and the other endof the automatic switch K2; the N end of the temperature controller U1 is connected with a zero line N and one end of a fan contactor coil KT; the other end of the fan contactor coil KT is connected with the O end of the temperature controller U1 and the normally closed end of the fan contactor coil KT; the N2 end of the temperature controller U1 is connected with one end of the automatic switch K2, the other normally-closed end of the fan contactor coil KT is connected with one normally-open end of the fan contactor coil KT, and the other normally-open end of the fan contactor coil KT is connected with the manual swi