Noise reduction control method for air conditioning unit

Abstract

The invention discloses a noise reduction control method for an air conditioner unit, which judges whether the unit operates under partial load; if so, obtains the current noise value of the compressor and the current noise value of the outdoor fan; and judges whether the difference between the two noise values ​​is within the set difference value If yes, the unit will continue to run according to the current state; if not, then use the average value of the current noise value of the compressor and the current noise value of the external fan as the target noise value to adjust the speed of the compressor and the external fan; then judge whether the unit has reached Target output capacity; if not, adjust the compressor speed and external fan speed according to the target output capacity until the unit reaches the target output capacity; if yes, re-obtain the current noise value of the compressor and the current noise value of the external fan, and re-judge the Whether the difference between the noise value and the current noise value of the outdoor fan is within the setting range. Therefore, the present invention realizes the optimization of the noise of the outdoor unit on the premise that the unit reaches the target output capacity.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a noise reduction control method for an air conditioning unit. Background technique [0002] With the development of society and the continuous improvement of people's living standards, multi-split machines are becoming more and more popular due to their excellent energy-saving effects and flexible and convenient installation and use. Today, as multi-connected products are becoming more and more popular, users have higher and higher requirements for the experience of using multi-connected products. They are no longer limited to the requirements for cooling and heating effects and the operating noise of indoor units, but also for the operating noise of outdoor units. The impact on the environment has also been paid more and more attention, especially when the operating noise directly affects the neighbors, it is easy to cause neighborhood disputes. For the us...

AI Technical Summary

Problems solved by technology

[0005] The measure of increasing the partition will have a certain effect on reducing the impact of the operating noise of the unit on neighbors, but it is not a fundamental solution to the problem

Its main disadvantages are: it needs to add a lot of expenses to the user, and it is impossible to determine whether there is enough space around the outdoor unit to install a partition

[0007] The measure of changing the control software on site can also reduce the operating noise of the unit, but the main defect is: by changing the control software on site to reduce the fan speed and compressor speed when the unit is running, although the noise during partial load operation can be effectively reduced, it will As a result, the cooling and heating capabilities of the unit are severely limited when the unit is operating at high load and full load, and it is difficult to meet the user's cooling and heating effect requirements

[0009] Setting the way of silent operation at night is a relatively good noise reduction measure in the current multi-line products, but its main defect is: only according to the detection of day and night, reduce the fan speed and compressor speed when the unit is running at night , it is impossible to distinguish the operating load requirements of the unit and carry out precise control, which has great limitations in improving the user experience

For example, during the day, the unit will not enter the silent operation at night. Even if it is part-load operation, the outdoor unit will not perform noise reduction control, which will still cause the problem of noise affecting the surrounding neighbors; at night, the unit will automatically enter the night silent operation. Even if the unit needs to run at full load, the output capacity of the outdoor unit will no longer increase, and it is difficult to meet the cooling and heating effect requirements of the user. Although the neighbors generally close the doors and windows at this time, the operating noise of the outdoor unit will have little impact on it.

Images