Air conditioner frequency control method

Abstract

The invention discloses a frequency control method for an air conditioner. The frequency control method comprises the following steps that the air conditioner is started, and the operation of a compressor is controlled according to an initial frequency; during the operation of the air conditioner, the operating time of the actual temperature-reaching shutdown of a temperature sensor or the frequency of the actual temperature-reaching shutdown of the temperature sensor is obtained and compared with the set operating time of the temperature-reaching shutdown or the set frequency of the temperature-reaching shutdown; if a comparison result meets the set frequency drop condition, the compressor is controlled to operate in a frequency drop manner based on the current frequency; if the comparison result meets the set frequency rise condition, the compressor is controlled to operate in a frequency rise manner based on the current frequency; and otherwise, the compressor is controlled to maintain the current frequency operation. By applying the frequency control method, frequency control can be realized in a simple manner, and the processing speed requirement of an indoor unit is reduced.

Description

Technical field

[0001] The present invention belongs to the technical field of air conditioning. Specifically, it relates to the control of an air conditioner, and more specifically, to a frequency control method of an air conditioner. Background technique

[0002] Inverter air conditioners are widely used due to the advantages of high temperature control accuracy and energy saving. When the existing inverter air conditioner performs compressor frequency control, PID control based on temperature difference is usually adopted. Specifically, the indoor unit detects the indoor real-time temperature, calculates the temperature difference between the indoor real-time temperature and the target temperature, performs PID calculations according to the temperature difference, obtains the indoor unit frequency control signal, and sends the indoor unit frequency control signal to the outdoor unit. This signal controls the compressor frequency and realizes frequency modulation operation. T...

Examples

Embodiment approach

[0045] As an implementation manner, setting the frequency reduction condition includes: the actual running time of the temperature-up shutdown is less than the set temperature-up shutdown; or, the actual temperature-up shutdown frequency is greater than the set temperature-up shutdown frequency. If the actual running time of the temperature sensor is small, or the actual frequency of the temperature shutdown is high, it indicates that it is running at the current frequency and it is very easy to reach the temperature of the temperature sensor and stop. In order to reduce energy consumption and to avoid discomfort caused by frequent temperature sensor shutdowns, the compressor will be controlled to run at reduced frequency. The set frequency-up conditions include: the actual running time of the temperature-up shutdown is greater than the set temperature-up shutdown operation time, or the actual temperature-up shutdown frequency is less than the set temperature-up shutdown frequen...

Technical field

[0001] The present invention belongs to the technical field of air conditioning. Specifically, it relates to the control of an air conditioner, and more specifically, to a frequency control method of an air conditioner. Background technique

[0002] Inverter air conditioners are widely used due to the advantages of high temperature control accuracy and energy saving. When the existing inverter air conditioner performs compressor frequency control, PID control based on temperature difference is usually adopted. Specifically, the indoor unit detects the indoor real-time temperature, calculates the temperature difference between the indoor real-time temperature and the target temperature, performs PID calculations according to the temperature difference, obtains the indoor unit frequency control signal, and sends the indoor unit frequency control signal to the outdoor unit. This signal controls the compressor frequency and realizes frequency modulation operation. T...

Examples

Embodiment approach

[0045] As an implementation manner, setting the frequency reduction condition includes: the actual running time of the temperature-up shutdown is less than the set temperature-up shutdown; or, the actual temperature-up shutdown frequency is greater than the set temperature-up shutdown frequency. If the actual running time of the temperature sensor is small, or the actual frequency of the temperature shutdown is high, it indicates that it is running at the current frequency and it is very easy to reach the temperature of the temperature sensor and stop. In order to reduce energy consumption and to avoid discomfort caused by frequent temperature sensor shutdowns, the compressor will be controlled to run at reduced frequency. The set frequency-up conditions include: the actual running time of the temperature-up shutdown is greater than the set temperature-up shutdown operation time, or the actual temperature-up shutdown frequency is less than the set temperature-up shutdown frequen...

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