Method and device for adjusting running frequency of air conditioning compressor as well as air conditioner

Abstract

The invention discloses a method and device for adjusting the running frequency of an air conditioning compressor as well as an air conditioner. The method comprises the following steps: during the process of frequencyincreasing, determining afrequencyincreasing speed according to the frequencydifferencevalue of the preset target running frequency and the current running frequency, and increasingthe current running frequency at the frequencyincreasing speed; during the process of frequency reduction, judging whether the cause offrequency reduction is protective frequencyreduction or non-protective frequencyreduction, if the cause of the frequency reduction is protective frequencyreduction, running according to the preset frequency reduction speed, if the cause of the frequency reduction is non-protective frequencyreduction, determining a frequency reduction speed according to the temperature difference valueof the set temperature of the compressor and the indoor environment temperature, and reducing the current running frequency at the frequencyreduction speed. By adopting the method and the device provided by theinvention, that the variable-frequency air conditioner is controlled at different speeds according to frequency ranges during the frequency increasingand reduction processes is realized, that the frequency increasing and frequency reduction are performed more stably is ensured, and fluctuation of noises is reduced, therefore, the effect of increasingthe comfortof the air conditioner is achieved.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a method and device for adjusting the operating frequency of an air conditioner compressor, and an air conditioner. Background technique [0002] At present, when dealing with the operating frequency of the frequency converter of the air conditioner, the main consideration of frequency change is the frequency change when the temperature is set or when protection occurs. There is only one rate of change, which is not conducive to the noise comfort of the air conditioner. For example, when the ambient temperature or the protection state of the air conditioner changes, the operating frequency of the inverter air conditioner will change. Since the frequency change of the inverter will inevitably bring about a change in noise, not only the total value of the noise of the inverter outdoor unit will change, but also the noise level The frequency characteristics also change, which dir...

AI Technical Summary

Problems solved by technology

Moreover, the faster the operating frequency changes and the larger the span, the greater the jitter and roughness changes in the sound quality parameters, which directly lead to the deterioration of the air conditioner noise

There is a fixed value in the change of the current operating frequency, which does not distinguish the frequency change of protection and realization of the set temperature from the frequency change of comfort, which is not conducive to the improvement of the noise comfort of the air conditioner

[0003] Aiming at the problem of poor noise comfort of the air conditioner due to the fixed frequency value in the related technology, no effective solution has been proposed so far

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