Elliptical barrel direct-discharge silencer capable of improving power of 5Kw unit generator

Abstract

The invention relates to the technical field of barrel direct-discharge silencers, and discloses an elliptical barrel direct-discharge silencer capable of improving the power of a 5Kw unit generator. The elliptical barrel direct-discharge silencer comprises a shell, a front-end partition plate is welded to the top of the shell, an air inlet hole is formed in the inner wall of the front-end partition plate, a rear-end partition plate is welded to the bottom of the shell. An exhaust pipe is welded to the inner wall of the rear-end partition plate, an air inlet pipe is movably connected to the inner wall of the front-end partition plate, a first air inlet partition plate is welded to the inner wall of the shell, and a second air inlet partition plate is welded to the inner wall of the shell. The effective volume of cavities is increased, the power is better improved, the silencing effect is better improved, the volume ratio of all the cavities is optimized, the average airflow speed of the silencer is reduced, a vent pipe and the vent hole diameter are optimized, the exhaust smoothness of all the cavities is improved, the structure of the silencer shell is strengthened, sound radiation is reduced, flow guide and heat insulation of exhaust of the main air inlet pipe are achieved are solved, and the overall or large-area temperature of the silencer is prevented from being too high.

Description

technical field [0001] The invention relates to the technical field of cylindrical straight-row mufflers, in particular to an elliptical cylindrical straight-row muffler for increasing the generator power of a 5Kw unit. Background technique [0002] The muffler refers to the air duct with noise transmission at the same time, which can use noise reduction devices such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other pipes with discontinuous acoustic impedance to attenuate the noise in the pipe or Reflected back, the former is called a resistive muffler, and the latter is called a resistive muffler. There are also impedance-combined mufflers, straight exhaust pipes, which come out of the exhaust manifold, remove the catalyst section and the tail row, and directly discharge the exhaust gas. Into the air, this kind of emission effect is good, it is more suitable for long-term high-speed running and racing track, the ...

AI Technical Summary

Problems solved by technology

[0002] The muffler refers to the air duct with noise transmission at the same time, which can use noise reduction devices such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other pipes with discontinuous acoustic impedance to attenuate the noise in the pipe or Reflected back, the former is called a resistive muffler, and the latter is called a resistive muffler. There are also impedance-combined mufflers, straight exhaust pipes, which come out of the exhaust manifold, remove the catalyst section and the tail row, and directly discharge the exhaust gas. Into the air, this kind of emission effect is good, it is more suitable for long-term high-speed running and racing track, the vibration feeling is more obvious when driving, and at the same time, the untreated exhaust gas will cause serious pollution, improve high-speed horsepower, and medium-low speed torque Unsatisfactory, it will lose a certain amount of torque, the modified straight exhaust pipe generally increases the noise, and the exhaust emission exceeds the standard

[0003] As far as the traditional elliptical cylindrical in-line muffler used to increase the power of the generator is concerned, the muffler adopts an internally inserted pipe-type return flow three-chamber structure during use, which will cause a large engine power loss ratio, and the inner heat shield of the muffler The structure will cause the effective volume of the chamber to become smaller, the exhaust of the inner chamber will be blocked, and the heat dissipation will be poor, causing the temperature to be too high, which will also cause the continuous operation power of the engine to drop. , which leads to poor processability of the fine hole punching process of the inner chamber partition, and a decrease in the life of the mold. In addition, it will cause the high-temperature gas discharged from the intake pipe to directly fill the interior of the entire chamber without a diversion structure, resulting in the middle, rear and surface of the muffler. The temperature is higher, and a better shield imitation ironing structure design is required

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