A method, system, device, and medium for oil return control in a heating, ventilation, and air conditioning system
By identifying low-noise demand periods and predicting the return oil trigger time in the HVAC system, enhanced return oil operation is performed in advance, and low-noise return oil parameters are adopted, thus solving the return oil noise problem and achieving low-noise return oil control in a quiet environment, improving user experience and system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GD MIDEA HEATING & VENTILATING EQUIP CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
The existing oil return control method of HVAC system fails to differentiate control for different usage scenarios, resulting in noise during oil return operation in quiet environments, which affects the user experience.
By identifying periods of low-noise demand and performing enhanced oil return operations in advance when the predicted oil return trigger time falls within these periods, and by employing low-noise oil return parameters, including longer oil return duration, higher compressor operating frequency, and larger throttling device opening, the system's oil return demand is ensured while noise is reduced.
While ensuring normal oil return in the system, the noise generated during the oil return process is significantly reduced, improving the user experience and enhancing the adaptability and accuracy of the control scheme.
Smart Images
Figure CN122408192A_ABST