Pipe vibration response function fitting method under different environmental conditions of an air conditioner

Abstract

The invention provides a pipe vibration response function fitting method under different environmental conditions of an air conditioner, belonging to the field of frequency conversion air conditioners. The main points are as follows: the compressor suction and discharge port pressures at different frequency points under any mode of operation corresponding to outdoor ambient temperature of the airconditioner are measured, and the compressor suction and discharge port pressures at other ambient temperatures are obtained by fitting software; calculating the gas resistance torque of the compressor and the effective driving torque of the compressor shaft compressing refrigerant, and calculating the rotational inertia torque of the compressor shaft according to the calculated gas resistance torque of the compressor and the effective driving torque of the compressor shaft compressing refrigerant; the calculated rotational inertia moment of the compressor shaft is transformed by FFT, and themoment amplitude, initial phase and constant of each harmonic component of the rotational inertia moment of the compressor shaft at the operating frequency point are obtained. According to the torqueharmonics obtained from the solution, the vibration response function of compressor pipes under different environmental conditions is obtained by fitting.

Description

Technical field [0001] The invention belongs to the field of frequency conversion air conditioners, and particularly relates to the field of fitting methods for piping vibration response function relationships of air conditioners under different environmental working conditions. Background technique [0002] The vibration response test of air conditioner piping is an indispensable link in the development process of air conditioner products and an important means to ensure the reliability of piping vibration. In the vibration response test process, because the environmental conditions have a great influence on the vibration response of the air conditioner piping, it is necessary to test the piping vibration response under different environmental conditions. This method increases the test cycle and the test cost is expensive. Coupled with the vast territory of our country, the climate and temperature of various regions vary greatly. In modern building structures, air conditioners a...

AI Technical Summary

Problems solved by technology

In the vibration response test process, since the environmental conditions have a great influence on the vibration response of the air conditioner piping, it is necessary to test the vibration response of the piping under different environmental conditions. This method increases the test cycle and the test cost is expensive.

In addition, our country has a vast territory, and the climate and temperature in different regions vary greatly. In modern building structures, the air conditioner is installed in the shutter structure, which makes the operating environment of the air conditioner even worse.

In the national standard, the most severe working condition of the air conditioner operating test environment is T3. In the southern region, the operating environment of the air conditioner in the shutter environment may have exceeded the severity of the T3 working condition, and the experimental test condition does not cover these more severe conditions. harsh working conditions

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