A method for evaluating the pipeline vibration and low-frequency noise of inverter air conditioners

Abstract

The invention relates to the field of air conditioners, and discloses a method for evaluating pipeline vibration and low-frequency noise of a variable-frequency air conditioner, which is used to solve the problem of low accuracy of pipeline vibration and low-frequency noise evaluation. The present invention firstly establishes the finite element model of the compressor and the pipeline system according to the structural parameters of the compressor and the pipeline; The simulation results are used for vibration and noise evaluation. If the vibration and noise evaluation is qualified, the finite element model of the compressor and pipeline system at this time is processed into a prototype, and the prototype is tested for vibration and noise. If the vibration and noise evaluation is unqualified, the pipeline is used. After the automatic optimization method optimizes the structural parameters of the pipeline, the finite element model of the compressor and the pipeline system is re-established, and the coupled vibration simulation is carried out and the simulation results are evaluated for vibration and noise. The invention is suitable for evaluating the pipeline vibration and low-frequency noise of the variable-frequency air conditioner.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method for evaluating the pipeline vibration and low-frequency noise of variable frequency air conditioners. Background technique [0002] The compressor is the core component of the air conditioner and one of the highest cost components. The lightweight design of the compressor has become a trend, that is, the weight of the compressor is getting lighter and smaller, and the volume of the compressor is getting smaller and smaller, which means that the rotational inertia of the compressor is reduced. , the vibration of the compressor unit will be larger, and the vibration of the pipeline directly connected to the compressor will also increase, which will seriously affect the reliability of the pipeline vibration; in addition, with the promulgation of the new energy efficiency standard in the air-conditioning industry, the new refrigerant R32 The noise problem in air conditioners ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose a method for evaluating pipeline vibration and low-frequency noise of an inverter air conditioner to solve the problem of low accuracy in pipeline vibration and low-frequency noise assessment

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