Air conditioner control method

Abstract

The invention provides an air conditioner control method. In a heating mode, acquiring the outdoor environment temperature T of the outer ring, the outer disk temperature change value delta T the outer disc; according to the acquired outdoor environment temperature T of the outer ring, the outer disk temperature change value delta T of the air conditioner outer disc judging whether frosting; whenjudging that the air conditioner is frosted, control the opening degree of an expansion valve open large upsilon according to a certain speed rate, wherein the speed rate based at least on the outer disc is the temperature change value delta T outer disc into index change. Thus, in the detected by frosting of the outdoor condenser, the expansion valve opening degree of severity of the frosting time response adjustment, refrigerant flow is increased, thereby increasing the system pressure, evaporation and condensation, thereby inhibiting frosting process for inhibiting air-conditioning heatingcapacity attenuation.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to an air conditioner control method. Background technique [0002] Air conditioners generally include compressors, condensers, throttling devices, and evaporators. The throttling devices of household air conditioners are mainly electronic expansion valves and capillary tubes. Electronic expansion valves can realize automatic control of refrigerant flow in the system to ensure that the system is Play to the best of your ability. Generally, the opening of the electronic expansion valve of household air conditioners is adjusted according to the discharge temperature of the compressor. When the target exhaust gas set by the program is high, the throttling effect needs to be reduced and the opening of the expansion valve should be increased. In low temperature conditions, the outdoor condenser will continue to frost, which will increase the outdoor heat exchange wind resistance, the he...

AI Technical Summary

Problems solved by technology

In low temperature conditions, the outdoor condenser will continue to frost, which increases the heat transfer resistance outside the outdoor side, the heat transfer effect is poor, the low pressure decreases, the compressor suction temperature decreases, and the corresponding discharge temperature decreases. In order to achieve the program setting Target exhaust, the opening of the expansion valve is reduced, resulting in a more serious throttling effect and more obvious frosting effect, which will affect the user's comfort experience

[0003] Therefore, under the condition of outdoor low temperature, after frosting of the outdoor condenser is detected, according to the normal control method, the opening of the electronic expansion valve is continuously closed to achieve the required target exhaust gas, further worsening the frosting, and the outdoor The heat transfer effect becomes poor, which affects the performance of the air conditioner

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