Vibration reduction method for blowdown pipeline of air-conditioner outdoor unit

Abstract

The invention discloses a vibration reduction method for a blowdown pipeline of an air-conditioner outdoor unit. The vibration reduction method comprises the steps that a general motion equation is solved to obtain displacement functions of nodes in the gridded blowdown pipeline by obtaining the gridded blowdown pipeline and an excitation source, then strain functions of units in the gridded blowdown pipeline are calculated to solve strain values of the units, the strain values are compared with a set upper limit strain value, the bending radiuses and number of U-shaped turns and the number and installing positions of vibration reduction parts of an initial blowdown pipeline model are modified if the strain values are greater than the upper limit strain value till the calculated strain values are not greater than the upper limit strain value, and finally the blowdown pipeline model having good vibration reduction performance is determined. The blowdown pipeline model serves as a blowdown pipeline model of a sample piece to manufacture the blowdown pipeline of the sample piece, the vibration reduction performance is good, and the blowdown pipeline is applied to the air-conditioner outdoor unit to enable the overall performance of an air conditioner to be improved.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction, and in particular relates to a vibration reduction method for an air supply pipeline of an outdoor unit of an air conditioner. Background technique [0002] The air-conditioning air-conditioning external unit compressor with air supplement and enthalpy increase has one more air supply line than the ordinary compressor. The air supply line is welded by the pipeline and the electronic expansion valve (solenoid valve). One end of the air supply line is welded to the air supply port of the compressor, and the other end is welded to the flasher. . [0003] Due to the large vibration of the air supply port of the compressor, the large mass of the electronic expansion valve (solenoid valve) located on the upper part of the pipeline, and the small diameter of the pipeline, the air supply pipeline is prone to excessive local stress during the operation of the air conditioner. The phenomenon o...

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Problems solved by technology

[0003] Due to the large vibration of the air supply port of the compressor, the large mass of the electronic expansion valve (solenoid valve) located on the upper part of the pipeline, and the small diameter of the pipeline, the air supply pipeline is prone to excessive local stress during the operation of the air conditioner. The phenomenon of cracking causes refrigerant leakage and malfunction of the air conditioner.

Installing U-shaped bends and damping parts on the gas supply pipeline can buffer the vibration of the pipeline, but how to reasonably arrange the number of U-shaped bends, the number of vibration-damping components and the installation position on the gas supply pipeline will have a great impact on the quality of the gas supply pipeline. Vibration damping performance has a relatively large impact

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