空调器控制方法以及空调器
By detecting the intake superheat and exhaust superheat of the air conditioner, and adjusting the throttle valve, compressor frequency, and oil return valve, the problem of oil shortage during the low-temperature start-up phase of the air conditioner was solved, thereby improving the operational reliability and service life of the air conditioner.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2023-09-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing air conditioners suffer from oil shortage during low-temperature start-up, especially rotary compressors. During start-up, the liquid refrigerant and lubricating oil are miscible, resulting in a large amount of oil discharge, which affects the service life of the unit. Existing control schemes are difficult to adapt to the oil discharge problem under different operating conditions, resulting in poor operational reliability.
By detecting the outdoor ambient temperature, suction superheat T1, and discharge superheat ΔT2, the opening of the throttle valve, the operating frequency of the compressor, and the opening of the oil return valve are adjusted. Combined with the control functions of suction superheat T1 and discharge superheat ΔT2, the oil discharge volume of the air conditioner during the low-temperature start-up phase is optimized.
It effectively reduces the amount of oil discharged during the low-temperature start-up phase of the air conditioner, ensuring that the lubricating oil is not carried away, improving the operational reliability and stability of the air conditioner, and extending its service life.
Smart Images
Figure CN117109165B_ABST