Air conditioner and control method thereof

Abstract

The invention discloses a control method for an air conditioner. The control method comprises the following steps: S1, presetting a target pressure P0 and the superheat degree T0 of the outlet of a target evaporator; S2, acquiring an actual pressure P1 and the superheat degree T1 of the outlet of an actual evaporator; S3, calculating the difference value delta P between the actual pressure P1 and the target pressure P0, and the difference value delta T between the superheat T1 of the outlet of the actual evaporator and the superheat degree T0 of the outlet of the target evaporator; S4, adjusting the frequency of a frequency-variable compressor according to the difference value delta P between the actual pressure P1 and the target pressure P0 to maintain the actual pressure P1 within the range of the target pressure P0, and adjusting the open degree of an electronic expansion valve according to the difference value delta T between the superheat T1 of the outlet of the actual evaporator and the superheat degree T0 of the outlet of the target evaporator to maintain the superheat degree T1 of the outlet of the actual evaporator within the range of the superheat degree T0 of the outlet of the target evaporator; S5, repeating the steps of S2 to S4 according to a preset cycle. The invention also discloses the air conditioner applying the control method. By the control method, the universality of an outdoor unit is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner control method. The present invention also relates to an air conditioner applying the above control method. Background technique [0002] The air conditioner absorbs the heat of the indoor air or releases heat to the room through the evaporation or condensation of the refrigerant, so as to achieve the purpose of adjusting the indoor temperature. With the continuous development of science and technology, the performance of air conditioners has received more and more attention. [0003] An air conditioner generally includes two parts: an outdoor unit and an indoor unit. The two parts need to be matched according to parameters such as fan power, compressor power, and heat exchange heat transfer capacity during installation. The structure of the two is also the same as the outdoor unit and the indoor unit Factors to consider when matching machines. In t...

AI Technical Summary

Problems solved by technology

Obviously, the adjustment process of this adjustment method needs to be crossed between the indoor unit and the outdoor unit, and the internal actions are relatively cumbersome, resulting in poor intuitiveness and low accuracy of the control process of the air conditioner

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