Fixed-frequency air conditioner control method

Abstract

The invention discloses a fixed-frequency air conditioner control method. The method comprises the steps of (1) acquiring a current indoor temperature and a current indoor coil pipe temperature during operating of an air conditioner, and comparing the current indoor temperature with a current set temperature; (2) comparing the current indoor coil pipe temperature with a current coil pipe target temperature if the comparison result of the current indoor temperature and the current set temperature meets the condition of operation stopping of a compressor at the indoor temperature; (3) determining the current coil pipe target temperature according to the current set temperature; (4) controlling the compressor to stop operating if the comparison result of the current indoor coil pipe temperature and the current coil pipe target temperature meets the condition of operation stopping of the compressor at the coil pipe temperature; and (5) otherwise, controlling the compressor to continue operating. By means of the fixed-frequency air conditioner control method, fluctuation of indoor temperature can be reduced by reducing the start-stop frequency of the compressor, and the comfort performance of the fixed-frequency air conditioner is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to the control of an air conditioner, and more specifically relates to a control method for a fixed frequency air conditioner. Background technique [0002] At present, the opening and closing of the fixed-frequency air conditioner compressor is mainly controlled by the deviation between the indoor ambient temperature and the set temperature: when the indoor ambient temperature does not reach the set temperature, the compressor is in the running state; when the indoor ambient temperature reaches the set temperature When the temperature is low, the compressor is turned off; when the difference between the indoor ambient temperature and the set temperature reaches the set difference, the compressor is turned on again. [0003] Compared with the inverter air conditioner, the switching frequency of the compressor of the fixed frequency air conditioner is relativel...

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Problems solved by technology

And because the compressor needs to be protected for a period of time from turning on to turning off to turning on again, that is, the stop time of the compressor has a minimum time limit, therefore, during the period when the compressor stops, the indoor ambient temperature may rise or fall again. If it is above or below the set temperature, it will not only further cause relatively large fluctuations in the indoor temperature, but also cause poor user experience, and further increase the switching frequency of the compressor, which will intensify the fluctuation of the indoor temperature.

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