Refrigerant leakage detection method and air conditioner

Abstract

The invention provides a refrigerant leakage detection method and an air conditioner. The refrigerant leakage detection method comprises the following steps of S1, operating the air conditioner, judging whether a refrigerant is proper or no, if so, executing the step S2, and if not, executing the step S4; S2, judging whether a preset detection triggering condition is met or not, if yes, executingthe step S3, and if not, executing the step S1; S3, performing refrigerant leakage verification judgment, judging whether verification judgment conditions are met or not, if yes, determining refrigerant leakage, and if not, executing the step S3 again; S4, judging whether a high-pressure side leakage judging condition is met or not, if yes, determining that the high-pressure side leaks, and if not, executing the step S5; and S5, judging whether a low-pressure side leakage judging condition is met or not, if so, determining that the low-pressure side leaks, and if not, executing the step S1 again. The refrigerant leakage detection method can improve the effectiveness of refrigerant detection and enhance the safety of a whole air conditioner system; and the method can achieve the comprehensive benefits of accurate judgment, energy conservation and safety.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for detecting refrigerant leakage and an air conditioner. Background technique [0002] With the rapid development of air-conditioning technology, air-conditioning plays an increasingly important role in people's daily life. Facing the large-scale popularization of air conditioners, the maintenance of air conditioners has become correspondingly frequent, and various problems of air conditioners on the market emerge in endlessly. [0003] For the air-conditioning system, the amount of refrigerant should be kept sufficient, and the air-conditioning system can operate normally in the case of no leakage of the refrigerant. Air conditioners often cause slow leakage of refrigerant in their systems due to various reasons. If the air conditioner is installed irregularly or due to long-term operation after installation, it may cause vibration. Poor sealing of the posit...

AI Technical Summary

Problems solved by technology

Air conditioners often have slow leakage of refrigerant in the system due to various reasons. If the air conditioner is not installed properly or due to long-term operation after installation, it may cause vibration. For example, when the air conditioner is installed, the connecting pipe and the internal and external units are connected The position seal is poor, or the connecting pipe bends and leaks when passing through the wall, which will easily lead to long-term slow leakage of refrigerant in the air conditioning system pipeline. Once the refrigerant leaks, the cooling effect of the air conditioning system will deteriorate, and even compression will occur. The phenomenon of machine burning

In addition, if the system pipeline is in a harsh environment, the pipeline is prone to leakage after long-term corrosion, which gradually reduces the amount of refrigerant in the system

[0004] At present, environmental protection refrigerants that meet the requirements of environmental protection, energy saving and low cost in air-conditioning technology have the disadvantage of being flammable and explosive. This characteristic is still the bottleneck restricting the large-scale industrialization of flammable refrigerant air conditioners.

The biggest risk is that the leaked refrigerant gas may cause combustion or even explode when the concentration reaches a certain level

And because there are often many appliances in the room, there is a risk of igniting flammable refrigerant gas

At present, there are various refrigerant detection methods, but most of them are single-parameter detection, and the detection method is affected by other factors and has poor accuracy, and its detection effectiveness is poor; on the other hand, in the current refrigerant detection, the main body of the refrigerant detection method is In the above cases, even if there is no refrigerant leakage, the detection of the main part of the refrigerant detection method is required to determine the leakage. At this time, the detection effectiveness of the multi-step refrigerant detection method is poor.

On the other hand, when detecting refrigerant leaks, there is still a qualitative position judgment, which needs to be checked one by one during maintenance, and the maintenance process is cumbersome

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