Automatic drainage silencer for vehicle

Abstract

The invention discloses an automatic drainage silencer for a vehicle. The automatic drainage silencer comprises a shell, a front stop plate and a rear stop plate are arranged inside the shell and divide the shell into a front cavity, a middle cavity and a rear cavity, an air inlet tube spans the front cavity and the middle cavity to be erected on the front stop plate and the rear stop plate, and an air outlet tube spans the rear cavity and the middle cavity to be erected on the rear stop plate and the front stop plate. The automatic drainage silencer further comprises a siphon. A Venturi tube is arranged in the middle of the air outlet tube, and the siphon is connected to the position, with the smallest caliber, of the Venturi tube and communicated with the Venturi tube. Compared with the prior art, the automatic drainage silencer has the advantages of being high in drainage performance, good in corrosion resistance and low in cost, and is suitable for improving the overall condensed-water drainage effect, and therefore the corrosion resistance of the automatic drainage silencer is improved.

Description

technical field [0001] The invention relates to a vehicle muffler, in particular to a vehicle automatic drainage muffler. Background technique [0002] At present, in order to achieve anti-corrosion performance in the automobile exhaust muffler, the condensed water is generally discharged by means of a siphon pipe or a hole punched at the lowest point of the shell. For the former, the siphon requires a large pressure difference to achieve the drainage effect, so under the condition of low speed of urban driving vehicles, the simple siphon design will fail, causing the muffler to be corroded by condensed water; although the latter has a strong drainage capacity , but the outer surface of the muffler shell will be severely corroded near the drain hole, which will affect the appearance; in addition, in the design of the vent hole, the condensed water will also be discharged when the vehicle is idling, resulting in water accumulation on the ground where the vehicle is parked. ...

AI Technical Summary

Problems solved by technology

For the former, the siphon requires a large pressure difference to achieve the drainage effect, so under the condition of low speed of urban driving vehicles, the simple siphon design will fail, causing the muffler to be corroded by condensed water; although the latter has a strong drainage capacity , but the outer surface of the muffler shell will be severely corroded near the drain hole, which will affect the appearance; in addition, in the design of the vent hole, the condensed water will also be discharged when the vehicle is idling, resulting in water accumulation on the ground where the vehicle is parked

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