Method and device for detecting blockage of air conditioning system and air conditioner

Abstract

The invention provides a method and device for detecting blockage of an air conditioning system and an air conditioner. The method comprises the steps that initial parameters at the starting moment of the air conditioner are obtained; when the air conditioner runs, running parameters of the air conditioner are obtained in real time; judging whether the initial parameters and the operation parameters meet blockage conditions or not, and generating a blockage detection result of the air conditioning system; wherein the blockage detection result comprises system full blockage and system micro blockage. In the detection mode, the blockage detection of the air conditioning system can be realized, and whether the blockage detection result is full blockage or micro blockage of the system is also distinguished, so that the blockage detection precision of the air conditioning system is improved, the air conditioning system is conveniently, timely and accurately protected, and shutdown protection of the air conditioner due to mistaken blockage is avoided; and thus, the user experience is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a detection method and device for blockage of an air conditioning system and an air conditioner. Background technique [0002] In practical applications, the air conditioner may cause system blockage due to forgetting to open the shut-off valve or blockage of foreign matter in the capillary. When the system is blocked, the refrigerant circulation of the air conditioner is abnormal, and the compressor becomes high temperature or even burned due to lack of cooling. Therefore, it is of great significance to detect the blockage of the air conditioning system. [0003] The existing air conditioning system blockage detection is mainly to compare the indoor coil temperature during operation, the outdoor ambient temperature and the indoor coil temperature before starting up after the air conditioner unit has been started for a period of time, such as the indoor coil temperature ...

AI Technical Summary

Problems solved by technology

Although it is possible to detect whether the air conditioning system is blocked, since the indoor coil is located in the indoor unit, the unit changes slowly during operation, so it is necessary to wait for the unit to run for a long time, such as 5 minutes, before judging. Before that, the compressor has been running, which affects the compression. In addition, in many cases, a certain amount of refrigerant flow can be ensured when the system is slightly blocked, and the temperature of the indoor coil varies greatly. Only according to the temperature of the indoor coil, false alarms and false alarms are prone to occur Downtime, reducing user experience

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