Control method for intelligent frost-free air conditioner

Abstract

The invention relates to the field of heat pump air-cooling type air conditioners, in particular to a control method for an intelligent frost-free air conditioner. The control method is characterized by comprising the following steps: arranging a storage tank with two channels in advance at first, wherein the two channels are respectively connected with an air suction end and an air discharge end of a compressor; preparing a low pressure detector and a high pressure detector in a control system, and respectively placing the low pressure detector and the high pressure detector on an air suction pipe and an air discharge pipe of the compressor; setting a low air pressure value and a high air pressure value in a control program; and controlling opening or closing of two valves by using the control program through the air pressure values acquired by the detectors according to the set air pressure values. When the air conditioner runs in a heating mode in a low-temperature environment, evaporating temperature and pressure of an outdoor heat exchanger are gradually reduced due to temperature and humidity of the environment, when the evaporating temperature and the pressure of the outdoor heat exchanger are reduced to set standard values, the low pressure valve is opened, and a refrigerant in the storage tank enters a compression circulation system to guarantee that the outdoor heat exchanger always works in a frost-free state. The comfort level of the air conditioner is improved, the efficiency is improved, and energy is saved.

Description

technical field [0001] The invention relates to the field of heat pump air-cooled air conditioners, in particular to a control method for an intelligent frost-free air conditioner. [0002] technical background [0003] So far, when the heat pump air-cooled air conditioner is running in low temperature environment, the heat exchange capacity of the heat exchanger of the outdoor unit will gradually decrease, the evaporation temperature of the heat exchanger will decrease accordingly, the suction pressure of the compressor will decrease at the same time, and the exhaust air will decrease. The pressure drops, the exhaust temperature drops, high-temperature and high-pressure gas cannot be discharged, and the indoor condensation temperature drops, forming a vicious circle. The outdoor heat exchanger gradually frosts. At this time, the defrosting program must be entered to defrost the heat exchanger, whether What an advanced defrosting method, during the defrosting process, the ind...

AI Technical Summary

Problems solved by technology

Therefore, when defrosting, the air conditioner not only fails to achieve the heating effect, but also plays a negative role, and at the same time wastes energy.