Precision oil-injecting method for automobile conditioner compressors

Abstract

The invention discloses a precision oil-injecting method for automobile conditioner compressors, comprising: injecting a target amount of refrigerant oil into a compressor according to a standard value, wherein the target amount is the standard value; acquiring first weight data of the compressor; subjecting the compressor with the injected oil to a performance test under simulated conditions; acquiring second weight data of the compressor subjected to the performance test; acquiring a weight difference according to the first weight data and the second weight data; injecting a supplementary amount of refrigerant oil into the compressor according to the weight difference, wherein the supplementary amount is the weight difference. The precision oil-injecting method for automobile conditionercompressors has the advantages that oil is supplementarily injected according to the actual conditions, acquired through a weighing apparatus, a code scanning apparatus and a data processing apparatus, of refrigerant oil left by the different compressors in a performance test system, the precision of ex-factory compressors is enabled to meet the oil injection standard, performance of the compressors is improved, and their service lives are extended.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a precise oil injection method for a compressor used in an automobile air conditioner. Background technique [0002] The compressor for automotive air conditioning is an important part of the automotive air conditioning system. Its function is to convert the low-temperature, low-pressure gaseous refrigerant from the evaporator into a high-temperature, high-pressure gaseous refrigerant through compression, and send it to the condenser. At present, there are two types of automotive air-conditioning compressors: electric compressors and traditional compressors. Electric compressors are mainly used in new energy vehicles. They are driven by electric motors and are used to compress refrigerant vapor in the air-conditioning system of automobiles. It includes the main part of the electric compressor and the drive controller. Traditional compressors are mainly used on fuel vehicles, generally...

AI Technical Summary

Problems solved by technology

[0004] After filling the quantitative refrigeration oil that meets the standard, it is necessary to perform a performance test on the compressor under simulated working conditions. However, during the performance test, some refrigeration oil will remain in the test system, making the compressor that has completed the performance test The amount of refrigeration oil is less than before the test

In the prior art, after the performance test is passed, no secondary refilling will be performed, resulting in the actual oil storage capacity of the compressor not meeting the standard, increasing the load on the compressor, and long-term operation may lead to compressor ablation; Refrigeration oil can not be filled too much, otherwise it will affect the heat exchange capacity of the evaporator, resulting in poor cooling of the air conditioner

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