Air conditioner and air conditioner throttling device blockage detection method and system

Abstract

The invention provides an air conditioner and an air conditioner throttling device blockage detection method and system. The air conditioner comprises a compressor, an indoor unit, an indoor unit evaporator and a counter. The detection method comprises the steps of (1) acquiring the state of the compressor after the air conditioner is powered on and started up; (2) judging whether the continuous running time of the compressor reaches the first preset time t1 or not when the compressor is in a running state; (3) if yes, further judging whether the running frequency of the compressor within the first preset time t1 is greater than the preset frequency f1; (3) if yes, acquiring the running current I1 of the air conditioner and / or the air intake temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator at the intervals of the second preset time t2; and (4) judging whether a throttling device of the air conditioner is blocked or not according to the running current I1 of the air conditioner and / or the air intake temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator. By means of the method, whether the throttling device of the air conditioner is blocked or not can be detected, and the detection method is simple and reliable.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a detection method for a throttling device blockage of an air conditioner, a detection system for a throttle device blockage of an air conditioner, and an air conditioner. Background technique [0002] The existing air-conditioning and refrigeration system includes a compressor, an outdoor heat exchanger, a throttling device, an indoor heat exchanger and a certain amount of refrigerant pre-charged. When the air conditioner is running, water or other impurities may be mixed into the system, or the moving parts of the throttling device itself may fail, resulting in the throttling device inside the air conditioner may be blocked after the air conditioner has been running for a period of time. As a result, the heat generated by the operation of the compressor motor cannot be taken out of the compressor body by the refrigerant, which in turn will cause the winding inside the compressor...

AI Technical Summary

Problems solved by technology

When the air conditioner is running, water or other impurities may be mixed into the system, or the moving parts of the throttling device itself may fail, resulting in the throttling device inside the air conditioner may be blocked after the air conditioner has been running for a period of time

As a result, the heat generated by the operation of the compressor motor cannot be taken out of the compressor body by the refrigerant, which will cause the winding inside the compressor to burn or the permanent magnet motor to demagnetize

Frequent replacement of the compressor will greatly increase the after-sales cost of the air conditioner manufacturer. Therefore, how to detect whether the throttling device in the air conditioner is blocked is very necessary

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