Air conditioners and their control methods, devices, storage media and computer program products

Abstract

This invention discloses a control method, device, air conditioner, storage medium, and computer program product for an air conditioner. The method includes: determining the inlet and outlet temperature difference of the indoor heat exchanger and the suction and discharge temperature difference of the compressor when the air conditioner is operating in cooling mode; and, when the outdoor ambient temperature is lower than the set outdoor temperature, controlling at least one of the following based on the inlet pipe temperature of the indoor heat exchanger, combined with the inlet and outlet temperature difference of the indoor heat exchanger and the suction and discharge temperature difference of the compressor: the opening degree of a primary flow regulating device, the opening degree of a secondary flow regulating device, the compressor frequency, and the opening degree of a throttling device, to adjust the inlet pipe temperature of the indoor heat exchanger and the bottom oil temperature of the compressor, so that the output cooling capacity of the air conditioner is within the set cooling capacity range. This solution maintains a stable indoor ambient temperature and improves indoor comfort by adjusting the evaporation temperature of the indoor heat exchanger and the bottom oil temperature of the compressor when the air conditioner is operating in low-temperature cooling mode.

Images