Pipe vibration simulation method for air conditioner compressor

Abstract

The invention relates to air conditioner parameter simulation, discloses a pipe vibration simulation method for an air conditioner compressor, and solves the problems of large simulation calculation amount and low calculation accuracy of a pipe vibration simulation method for the air conditioner compressor in a conventional technology. The method comprises the steps of A, determining a finite element analysis model of a compressor pipe structure according to an modal experiment and comparison with a modal simulation result; B, obtaining a compressor surface vibration displacement response function S(f) through experiment testing, wherein f is a frequency; C, dividing the compressor surface vibration displacement response function S(f) into a plurality of frequency band functions Si(f) (i is greater than or equal to 1 and is an integer); D, extracting a surface vibration displacement maximum Sj(fj) (j=i), in each frequency band range, of the compressor to serve as node load excitation of a whole analysis system, and segmentally performing simulation; and E, integrating simulation results to obtain a vibration response result, in a compressor full-frequency-band running range, of the compressor pipe.

Description

technical field [0001] The invention relates to air-conditioning parameter simulation, in particular to a method for simulating vibration of an air-conditioning compressor piping. Background technique [0002] At present, there are mainly two methods for the vibration simulation analysis of the piping of the inverter air conditioner compressor: [0003] (1) Compressor piping transient dynamics simulation method: it loads the internal rotor torque of the compressor on the rotor shaft as a load excitation, discretizes the load excitation value, and considers material nonlinearity (such as rubber material) and contact nonlinearity. Linear (such as frictional contact) factors to analyze the dynamic response of compressor piping at a certain point in time. This method belongs to the category of time-domain analysis methods, and can perform accurate time-domain analysis on the vibration state of compressor piping. However, a simulation analysis can only simulate the vibration res...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a vibration simulation method for air-conditioning compressor piping to solve the problems of large amount of simulation calculation and low calculation accuracy in the traditional technology of air-conditioning compressor piping vibration simulation method

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