Control method of air conditioner under heating mode

Abstract

The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner under a heating mode. The control method of the air conditioner under the heating mode aims to solve the problems that existing control methods of air conditioners have poor universality and bad user experience. In order to realize the purposes, the control method comprises thesteps that the outdoor environment temperature is obtained; when the environment temperature is smaller than or equal to a temperature threshold, the preheating time of an electric heater is calculated according to a first fitting formula; the accelerated speed of an external fan is calculated according to a second fitting formula; the frequency raising speed of a compressor at a frequency raising stage is calculated according to a third fitting formula; the electric heater is controlled to preheat the compressor according to the preheating time; the speed of the external fan is controlled torise to a target rotating speed according to the accelerated speed; and when the starting time of the electric heater reaches the preheating time and the speed of the external fan is raised to the target rotating speed, the compressor is controlled to conduct frequency raising according to the frequency raising speed. In this control mode, the control method of the air conditioner under the heating mode can be used for improving the universality of the air conditioner and the use experience of users.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for controlling an air conditioner in a heating mode. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for the quality of life, and this requirement is particularly evident in household appliances. Taking an air conditioner as an example, in order to meet the needs of users for rapid heating and thus bring users a comfortable experience, when the existing air conditioner is just turned on, the frequency of the compressor is generally increased to a higher frequency (such as frequency to the maximum operating frequency). In the process of the compressor rapidly rising to high frequency, in order to ensure normal oil return, the compressor is usually forced to continue running at a certain or certain fixed frequency (oil return frequency) for a period of time, and continue to increase the frequency...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problems of poor universality and poor user experience in the existing air-conditioning control methods, the present invention provides a control method for air-conditioning in heating mode. The air conditioner includes a compressor, an expansion valve and an external fan, the compressor is equipped with an electric heater, and the control method includes:

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