Variable frequency air conditioner pipeline vibration and low-frequency noise evaluation method

Abstract

The invention relates to the field of air conditioners, and discloses a variable frequency air conditioner pipeline vibration and low-frequency noise evaluation method which is used for solving the problem that the accuracy of pipeline vibration and low-frequency noise evaluation is low. The method comprises the steps that firstly, a compressor and pipeline system finite element model is established according to structural parameters of a compressor and structural parameters of a pipeline; then, compressor and pipeline coupling vibration simulation is conducted based on the compressor and pipeline system finite element model, vibration noise evaluation is conducted on a simulation result; if the vibration noise evaluation is qualified, the compressor and pipeline system finite element model at the moment is machined into a prototype, and vibration noise testing is conducted on the prototype; and if the vibration noise evaluation is not qualified, the structural parameters of the pipeline are optimized by using an automatic pipeline optimization method, thus re-establishing a compressor and pipeline system finite element model, carrying out coupled vibration simulation, and carrying out vibration noise evaluation on a simulation result. The invention is suitable for variable frequency air conditioner pipeline vibration and low-frequency noise evaluation.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method for evaluating frequency conversion air conditioner pipeline vibration and low-frequency noise. Background technique [0002] The compressor is the core component of the air conditioner, and it is also one of the most expensive components. The lightweight design of the compressor has become a trend, that is, the weight of the compressor is getting lighter and smaller, which means that the moment of inertia of the compressor is reduced. , the single vibration of the compressor will be greater, and the vibration of the pipeline directly connected to the compressor will also increase, which will seriously affect the reliability of pipeline vibration; The noise problem in the air conditioner is prominent, especially the low-frequency sound transmission (low-frequency sound from the outdoor side to the indoor) noise problem, which seriously affects the user experience. The vi...

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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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