CN215662936U - Exhaust silencer for fuel cell vehicle - Google Patents

Abstract

The utility model belongs to the technical field of automobile accessories, and particularly relates to an exhaust silencer for a fuel cell vehicle; the sound absorption device comprises an exhaust silencer, a partition plate and sound absorption cotton, wherein the sound absorption cotton is fixed above the outside of the exhaust silencer through the partition plate; the utility model has obvious noise reduction and weight reduction effects and is not easy to cause water blockage of the sound absorption cotton to fail.

Description

Exhaust silencer for fuel cell vehicle

Technical Field

The utility model belongs to the technical field of automobile accessories, and particularly relates to an exhaust silencer for a fuel cell vehicle.

Background

Currently, the exhaust muffler for a fuel cell vehicle mounted on a car on the market has the following two disadvantages.

First, the weight is large. Because the exhaust muffler carried by a car on the market is mainly used for a gasoline/diesel engine, the exhaust temperature is higher, a metal muffler is required, and the weight is larger; the fuel cell has lower exhaust temperature and can meet the requirement without high-temperature resistant materials;

secondly, the sound absorption cotton is easy to cause water blockage and failure. Because the steam in the exhaust of the gasoline/diesel engine is relatively less, the exhaust muffler has a limited drainage structure, and the adoption of the structure can easily cause the water blockage of the sound absorption cotton to fail.

Disclosure of Invention

In order to overcome the problems, the utility model provides the fuel cell exhaust muffler which has obvious noise reduction and weight reduction effects and is not easy to cause water blockage of sound absorption cotton to lose effectiveness.

An exhaust silencer for a fuel cell vehicle comprises an exhaust silencer 1, a partition plate 2 and sound absorption cotton 3, wherein the sound absorption cotton 3 is fixed above the outside of the exhaust silencer 1 through the partition plate 2.

The partition plate 2 is located outside the exhaust muffler 1 and fixed above the housing of the exhaust muffler 1.

The sound absorption cotton 3 is fixed on the partition board 2.

The casing of the exhaust muffler 1 is made of plastic.

The utility model has the beneficial effects that:

1. the noise reduction and weight reduction effects are obvious. Because the exhaust noise of the fuel cell is mainly concentrated at medium and high frequencies, the silencer adopting the structure can effectively reduce the medium and high frequency noise; and the plastic shell is adopted, so that the weight can be effectively reduced;

2. the sound absorption cotton is not easy to cause water blockage and failure. Because the fuel cell exhaust contains a large amount of water vapor, the silencer adopting the structure can effectively control the sound absorption cotton to absorb water, and the sound absorption cotton cannot be blocked by water to lose effectiveness.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Wherein: 1 exhaust silencer, 2 baffle, 3 sound absorption cotton.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, an exhaust muffler for a fuel cell vehicle comprises an exhaust muffler 1, a partition plate 2, and sound absorption cotton 3, wherein the sound absorption cotton 3 is fixed above the outside of the exhaust muffler 1 through the partition plate 2.

The partition plate 2 is located outside the exhaust muffler 1 and fixed above the housing of the exhaust muffler 1.

The sound absorption cotton 3 is fixed on the partition board 2.

The casing of the exhaust muffler 1 is made of plastic.

The curved arrow positioned at the upper part in the figure 1 is the trend of sound waves, the straight arrow positioned at the lower part in the figure 1 is the trend of exhaust gas, and the sound absorption cotton is blocked above the silencer through the partition plate, so that the separation of the sound waves and the exhaust gas circulation path is realized.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the scope of the present invention is not limited to the specific details of the above embodiments, and any person skilled in the art can equally and equally replace or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (4)

1. The utility model provides a fuel cell vehicle exhaust silencer, includes exhaust silencer (1), its characterized in that still includes baffle (2), sound absorption cotton (3), wherein sound absorption cotton (3) are fixed in the outside top of exhaust silencer (1) through baffle (2).

2. The exhaust muffler for a fuel cell vehicle according to claim 1, wherein the partition plate (2) is located outside the exhaust muffler (1) and fixed above the casing of the exhaust muffler (1).

3. The exhaust muffler for a fuel cell vehicle as set forth in claim 2, wherein the sound-absorbing cotton (3) is fixed to the partition plate (2).

4. The exhaust muffler for a fuel cell vehicle according to claim 3, wherein the housing of the exhaust muffler (1) is made of plastic.

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