Multi-split system, control method, device and equipment thereof and storage medium

• Main Authors: SONG NIANHUAN, WANG DAPENG, SUN PENGLONG, DAI ZHAOQIANG
• Format: Patent
• Language: Chinese; English
• Published: 29.07.2022
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

The invention provides a multi-split air conditioning system, a control method and device thereof, equipment and a storage medium, and the control method comprises the steps that if it is detected that the operation mode of the multi-split air conditioning system is a full heating mode or a simultaneous cooling and heating mode, and the ith indoor unit operating in the heating state enters a cold air prevention mode, for the ith indoor unit, calculating a first temperature difference between a first saturation temperature of a first air pipe on the outdoor unit side and a first liquid pipe temperature, and a second temperature difference between a first environment temperature and the first liquid pipe temperature; and if the first temperature difference is larger than or equal to the first preset temperature threshold value and the second temperature difference is larger than or equal to the second preset temperature threshold value, the first switch valve corresponding to the ith indoor unit is controlled t