Piping for air conditioner outdoor machine

Abstract

The invention discloses an air condition outdoor machine piping, including a vent pipe and a muffler of the compressor, wherein the vent pipe includes a front section vertical to the vent of the compressor and a rear section connecting to the valve, and a connecting section at least including an arc section connected between the front section and the rear section; the muffler in the stair form includes a right angle or a blunt angle bend pipe of the two ends and a middle connecting section for connecting the two bend pipes. When in the working state, the rock bottom of the middle connecting section is not lower than the height of the upper air return hole of the compressor liquid storage tank. The improved pipeline only reduces the vibration of the piping, reduces the external radiation noises of the piping and the piping connecting the outdoor machine plate work piece; but also reduces the stress of the piping and improves the stress distribution, meanwhile greatly reduces the cost, shortens the production and the assemble time, has the good combination property in the aspect of advancing the energy efficiency ratio of the air condition, the reliability of the declining test and the transportation.

Description

technical field [0001] The invention relates to the piping of the air conditioner, in particular to the improvement technology of the piping structure of the outdoor unit of the air conditioner for the problems of vibration, noise and breakage of the air conditioning piping. Background technique [0002] The piping structure of the outdoor unit of the air conditioner is composed of straight pipes, bent pipes, mufflers and four-way valves (see figure 1 ), which is an important part connecting the condenser and the evaporator. Due to the vibration of the compressor and the disturbance of the fluid in the tube, the piping system vibrates. The strong vibration of the piping system has brought serious harm to the air conditioner: causing fatigue damage to the piping structure and piping accessories, especially the loosening and rupture of the connecting parts of the piping; making the working condition of the compressor worse and premature damage to the valve plate , consumes ...

AI Technical Summary

Problems solved by technology

The strong vibration of the piping system has brought serious harm to the air conditioner: causing fatigue damage to the piping structure and piping accessories, especially the loosening and rupture of the connecting parts of the piping; making the working condition of the compressor worse and premature damage to the valve plate , which consumes the power of the compressor and reduces the energy efficiency ratio of the air conditioner; the vibrating pipe structure radiates noise outward, making the noise value larger and the quality of the air conditioner lowered

[0003] At present, the piping for air conditioners usually adopts one or more U-shaped structures arranged in the circumferential direction of the compressor (see Figure 2), this piping structure is mainly to reduce the constraints of the air conditioner compressor on the piping and avoid the compressor from The transmission of the vibration energy of the pipeline; but the piping stress is too large, especially at the first turning of the compressor outlet (Figure 2 (the acute angle at A) has the hidden danger of broken pipe; and most of the natural frequency values ​​of the piping structure fall in the low-order range, and the frequency values ​​of adjacent orders are relatively close to , it is easy to fall in the resonance region of the excitation frequency, and structural resonance and air column resonance occur

Once the vibration value of the pipeline test is too large, temporary measures such as adding counterweight 17 and sticking anti-vibration glue 16 are often used to reduce vibration and noise, which is difficult to ensure the optimal design results and stable operation. The length of the copper pipe is longer and the material cost is higher

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