Control method of indoor unit in multiple on-line system and multiple on-line system

• Main Authors: XU YONGFENG, SHU WENTAO, XIONG MEIBING, YANG YUANTAO, WAN YONGQIANG, QIAN XIAOLONG, LI BO
• Format: Patent
• Language: English
• Published: 24.06.2015
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The invention discloses a control method of an indoor unit in a multiple on-line system and the multiple on-line system. The control method comprises the steps that 1 the return air temperature in each indoor unit of a plurality of indoor units is detected; 2 judgment on whether the return air temperature of the indoor unit satisfying a preparatory condition or not is conducted when any one indoor unit of the indoor units prepares to shift into a holding state from the current operating state or to shift into the operating state from the current holding state; 3 if the judgment is that the return air temperature of the indoor unit satisfies the preparatory condition, the throttle valve of the indoor unit is controlled to be in an off state, the indoor unit is controlled to operated with a current wind gear for a preset time, judgment on whether the return air temperature of the indoor unit satisfying the preparatory condition or not is conducted again, and control over the state of the indoor unit is conducted according to the result of the re-judgment. According to the control method provided by the embodiment of the invention, the error in return air temperature detecting can be reduced, the influence on the return air temperature by cold radiation and thermal radiation is overcome, the reliability of the multiple on-line system is improved, and the user experience is improved.