A method for controlling the speed of an air conditioner outdoor fan, an air conditioner, and a storage medium

Abstract

The invention discloses a method for controlling the speed of an outdoor fan of an air conditioner, an air conditioner and a storage medium. The method includes: when the operation of the air conditioner satisfies the pressure difference condition and the current operating frequency reaches a preset threshold, recording the temperature of the first inner pipe at the current moment. , and reduce the speed of the external fan of the air conditioner by a preset value; record the temperature of the second inner pipe after reducing the speed of the outer fan of the air conditioner, when the difference between the temperature of the first inner pipe and the temperature of the second inner pipe When it is greater than or equal to the first preset temperature value, the operating frequency after the preset value is reduced remains unchanged. The invention increases the condensation pressure by reducing the speed of the external fan of the air conditioner, increases the pressure difference to increase the refrigerant flow rate, and determines the optimal speed value by reducing the temperature of the inner pipe before and after the speed of the external fan, thereby increasing the cooling capacity.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for controlling the speed of an outdoor fan of an air conditioner, an air conditioner and a storage medium. Background technique [0002] DC inverter air conditioner refers to the air conditioner that adopts DC inverter control system and corresponding DC inverter compressor, which has the strongest energy-saving effect and more accurate temperature control technology. [0003] At present, the speed of most outdoor fans of DC inverter air conditioners is controlled according to the difference between the temperature of the outer coil and the ambient temperature to ensure energy-saving operation of the air conditioner. For example, when 4°C<outer coil temperature-ambient temperature<8°C , the speed of the external fan remains unchanged; when the temperature of the outer coil - ambient temperature < 4 °C, the speed of the external fan is reduced by 1 gear...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method for controlling the speed of the outdoor fan of an air conditioner, an air conditioner and a storage medium, aiming at solving the problem of low cooling capacity caused by excessively high speed of the outdoor fan in the prior art, small system pressure difference, and small refrigerant flow rate. The problem of poor cooling effect

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