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Control method of air conditioning system, air conditioning system and computer storage medium

A technology of an air-conditioning system and a control method, which is applied in the fields of air-conditioning system control, air-conditioning system, and computer storage medium, and can solve problems such as affecting user experience and indoor temperature drop.

Active Publication Date: 2020-07-17
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In related technologies, when the compressor of the air conditioning system is running, the lubricating oil is discharged together with the refrigerant, and the discharged lubricating oil needs to be returned to the compressor at an appropriate time to provide lubrication for the compressor. , when the compressor needs to return oil, the system needs to switch to the cooling mode, and the lubricating oil will be brought back to the compressor by flowing through the liquid refrigerant, but switching to the cooling state will cause the indoor temperature to drop, which will affect the user experience

Method used

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  • Control method of air conditioning system, air conditioning system and computer storage medium
  • Control method of air conditioning system, air conditioning system and computer storage medium
  • Control method of air conditioning system, air conditioning system and computer storage medium

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Embodiment 1

[0036] Such as figure 1 As shown, the first aspect of the present invention provides a control method for an air conditioning system, including:

[0037] S102: Based on the heating mode of the air conditioning system, obtain the system operating parameters within the preset oil return period, the accumulated operating time corresponding to the system operating parameters, and the outdoor ambient temperature;

[0038] S104: Based on the end of the preset oil return cycle, and when the system operating parameters, accumulated operating time, and outdoor ambient temperature all meet the heating oil return conditions, control the air conditioning system to perform oil return in the heating mode.

[0039] The control method of the air-conditioning system provided by the present invention monitors and acquires the system operating parameters of the air-conditioning system in a preset oil return cycle in real time when the air-conditioning system is operating in the heating mode, and...

Embodiment 2

[0045] On the basis of the first embodiment above, a compressor oil return model is established according to the system operating parameters of the air conditioning system and the corresponding oil level change data of the compressor.

[0046] In this embodiment, the oil return model of the compressor is a correspondence between system operating parameters and time thresholds of the air conditioning system. Specifically, according to the rated parameter characteristics of the compressor of the air conditioning system, the oil discharge rate of the compressor and the model of the air conditioning system under different operating parameters are obtained through theoretical calculation, and the oil return model of the compressor is obtained through multiple experimental tests and verifications. As well as theoretical calculations, the actual system operating parameters of the air conditioning system and a time threshold corresponding to the current parameters can be obtained throu...

Embodiment 3

[0057] On the basis of any of the above embodiments, the heating oil return condition further includes: the difference between the low pressure saturation temperature of the air conditioning system and the outdoor ambient temperature is greater than or equal to a preset threshold.

[0058] In this embodiment, when an oil return cycle ends, the low-pressure saturation temperature of the air conditioning system is compared with the outdoor ambient temperature at this time. If the difference is greater than or equal to a preset threshold, it is judged that the oil return cycle ends When , the low-pressure saturation temperature of the air-conditioning system and the outdoor ambient temperature meet the heating oil return conditions of the air-conditioning system. Specifically, the temperature difference between the low-pressure saturation temperature of the air-conditioning system and the outdoor ambient temperature is very small, and there will be no frosting, otherwise it is eas...

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Abstract

The invention provides a control method of an air conditioning system, the air conditioning system and a computer storage medium. The control method of the air conditioning system comprises the following steps that based on the air conditioning system, a heating mode is operated, and system operation parameters in a preset oil return period, accumulated operation time corresponding to the system operation parameters and outdoor environment temperature are obtained; and based on the end of the preset oil return period, and under the condition that the system operation parameters, the accumulated operation time and the outdoor environment temperature all meet the heating oil return condition, the air conditioning system is controlled to return oil in the heating mode. According to the control method of the air conditioning system, the operation parameters in the oil return period of the air conditioning system, the accumulated operation time under the operation parameters and the outdoorenvironment temperature are obtained, and when the parameters meet the heating oil return condition, the air conditioning system is controlled to carry out heating oil return, so that the problem that the indoor temperature is reduced due to the fact that an air conditioning system compressor must be switched into a refrigeration mode during oil return in the prior art is solved, and the user experience is improved.

Description

technical field [0001] The present invention relates to the technical field of air-conditioning equipment, and in particular, relates to a method for controlling an air-conditioning system, an air-conditioning system, and a computer storage medium. Background technique [0002] In related technologies, when the compressor of the air conditioning system is running, the lubricating oil is discharged together with the refrigerant, and the discharged lubricating oil needs to be returned to the compressor at an appropriate time to provide lubrication for the compressor. , When the compressor needs to return oil, the system needs to switch to the cooling mode, and the lubricating oil will be brought back to the compressor by flowing through the liquid refrigerant, but switching to the cooling state will cause the indoor temperature to drop, which will affect the user experience. Contents of the invention [0003] The present invention aims to solve at least one of the technical ...

Claims

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Application Information

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IPC IPC(8): F24F11/64F24F11/41F24F11/89F25B13/00F25B41/06F25B43/02F24F110/12F25B41/34
CPCF24F11/64F24F11/41F24F11/89F25B13/00F25B43/02F24F2110/12F25B41/31Y02B30/70
Inventor 李鹏飞许永锋李宏伟蒋运鹏吴晓鸿黄志林
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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