The detection method of oil volume and oil circuit blocking of the air -conditioning system

Abstract

The invention provides an air conditioner system which comprises a compressor, an oil separator and an oil return capillary pipe. The first end of the oil return capillary pipe is connected to the oil separator, and the second end of the oil return capillary pipe is connected to an air-returning pipe of the compressor. The air conditioner system further comprises a first temperature sensor for detecting the pipe temperature T1 of an exhaust pipe of the compressor, a second temperature sensor for detecting the pipe temperature T2 of the first end of the oil return capillary pipe, a third temperature sensor for detecting the pipe temperature T3 of the second end of the oil return capillary pipe, a fourth temperature sensor for detecting the environment temperature T4 and a controller for comparing the temperatures measured by all the sensors and conducting control according to the comparison result. When the absolute value of T2-T1 is less than or equal to 10 DEG C, and the absolute value T3-T1 is less than or equal to 10 DEG C, the oil separator and the compressor are sufficient in oil, and the oil return capillary pipe is smooth. When the absolute value of T2-T4 is less than or equal to 8 DEG C and the absolute value of T3-T4 is less than or equal to 8 DEG C, the oil separator and the compressor lack oil. When the absolute value of T2-T1 is less than or equal to 10 DEG C and the absolute value of T3-T4 is less than or equal to 8 DEG C, the oil separator and the compressor are sufficient in oil, but the oil return capillary pipe is blocked.

Description

Technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a method for detecting the oil volume and oil passage blockage of an air conditioning system. Background technique [0002] The compressor oil volume of the air conditioning system and the smoothness of the oil return capillary have a decisive influence on the reliability of the compressor and the system. At present, most of the oil return control of the air conditioning system is by connecting the oil separator to the compressor exhaust pipe, and the oil separator sends the oil to the compressor return pipe through the oil return capillary tube to return to the compressor. When the compressor and oil separator are short of oil or the oil return capillary is blocked, the compressor and air conditioning system will be fatally damaged. There is no method in the prior art that can simultaneously check the oil volume of the compressor and the oil separator and determ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a detection method for the oil volume and oil passage blockage of the air conditioning system, aiming to solve the problem in the prior art of simultaneously checking the oil volume of the compressor and the oil volume of the oil separator and being able to determine the oil return The problem of lack of technology for capillary unclogging

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