Control method for multi-connected system and multi-connected system

By designing a targeted control method for adjusting the indoor and outdoor unit systems in a multi-split air conditioning system, the system can quickly respond to indoor heat and humidity load demands, solving the problem of difficulty in simultaneously controlling temperature and humidity in existing technologies, thus improving user comfort and system performance.

CN117646994BActive Publication Date: 2026-07-21GREE ELECTRIC APPLIANCE INC OF ZHUHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Filing Date
2023-11-27
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing multi-split air conditioning systems struggle to balance indoor temperature and humidity control, resulting in a poor user experience and an inability to quickly respond to changes in indoor load.

Method used

Design a control method that collects indoor environmental parameters, judges and executes indoor heat load and humidity load adjustment actions, prioritizes responding to indoor heat load demand, adjusts the evaporation temperature of the indoor unit system while keeping the cooling capacity constant, and makes corresponding adjustments in combination with the operating parameters of the outdoor unit system.

Benefits of technology

It enables rapid response to indoor heat and humidity load demands, improving user comfort, and reduces temperature drop in the outdoor unit's circulation loop through high-pressure refrigerant, thereby enhancing system performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a control method for a multi-connected system and the multi-connected system, the multi-connected system has an outdoor unit system and at least one indoor unit system which is independent of the outdoor unit system and exchanges heat with the outdoor unit system, the indoor unit system is used for supplying cooling to a corresponding air conditioning area, the control method comprises the following steps: collecting indoor environment parameters of the air conditioning area and judging whether the indoor load demand is met; if the indoor heat load demand is not met, performing an indoor heat load adjustment action; if the indoor wet load demand is not met, performing an indoor wet load adjustment action, and adjusting the evaporation temperature of the indoor unit system under the condition that the cooling capacity is kept unchanged; wherein, the priority of the indoor heat load adjustment action is higher than that of the indoor wet load adjustment action. According to the application, corresponding adjustment actions are performed according to the indoor load conditions, the indoor heat load demand and the indoor wet load demand are quickly responded, and the user comfort is greatly improved.
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