CN214944514U - Silencer with improved structure - Google Patents

Abstract

The utility model discloses a silencer, including anechoic chamber, intake pipe and mounting panel, anechoic chamber contains casing, lower casing and baffle, and the lower port that goes up the casing sets up on the last port of casing down, and between casing and the lower casing on baffle and the position, be equipped with the venthole on the casing, be equipped with the cavity on the baffle, the bottom of cavity is equipped with the inlet port, the cavity with the venthole links to each other, is equipped with the air vent on the baffle, the inside that casing and baffle middle part just were located the casing is passed down to the upper end of intake pipe.

Description

Silencer with improved structure

Technical Field

The utility model relates to a noise eliminator for gasoline engine, specifically speaking are silencers.

Background

One type of existing gasoline engine used on snow blowers contains a muffler, which includes a muffling chamber, an intake pipe, and a mounting plate. The anechoic chamber comprises an upper shell, a lower shell and a partition plate, wherein the lower port of the upper shell is arranged on the upper port of the lower shell, and the partition plate is positioned between the upper shell and the lower shell. The silencing chamber is provided with an air outlet. The upper end of the air inlet pipe penetrates through the lower shell and the partition plate and is positioned in the upper shell. The upper end setting of mounting panel is on the casing, and the lower extreme setting of mounting panel is on the upper portion of admitting air management. The silencing chamber is internally provided with only one partition plate, the time for waste gas to pass through the silencing chamber is short, and the stroke is short, so the silencing effect is not ideal.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a silencer that noise elimination effect is good.

For solving the technical problem, the utility model relates to a silencer, including anechoic chamber, intake pipe and mounting panel, the anechoic chamber contains casing, lower casing and baffle, and the lower port that goes up the casing sets up on the last port of casing down, and the baffle is located between casing and the lower casing, is equipped with the venthole on the casing, be equipped with the cavity on the baffle, the bottom of cavity is equipped with the inlet port, the cavity with the venthole links to each other, is equipped with the air vent on the baffle, the inside that casing and baffle middle part just are located the casing is passed down to the upper end of intake pipe.

The baffle includes baffle and lower baffle, is equipped with the cavity on going up the baffle, is equipped with a plurality of gas pockets on going up the baffle, is equipped with down the cavity on the lower baffle, is equipped with the through-hole on the lower baffle, this through-hole with a plurality of gas pockets are corresponding, go up the baffle setting under on the baffle, the lower cavity on the lower baffle constitutes with last cavity on the last baffle the cavity, the cavity is equipped with air outlet channel, this air outlet channel with the venthole communicates with each other, the intake pipe passes the trompil that is equipped with in the middle part of last baffle and the lower baffle, and the bottom of lower cavity is equipped with the inlet port.

The cavity is provided with another air outlet channel, the silencing chamber is provided with another air outlet hole, and the other air outlet hole is communicated with the other air outlet channel arranged in the cavity.

The upper port of the air inlet pipe is provided with a pipe cover, and the upper end part of the air inlet pipe is provided with an air hole.

The top of the upper shell is provided with a fixing hole, and the pipe cover of the air inlet pipe is arranged below the fixing hole.

And a heat shield is arranged above the fixing hole and is arranged on the top of the upper shell.

The heat shield is provided with a convex circle which protrudes outwards.

The support plate is provided with heat dissipation holes.

And a flange is arranged on the lower port of the air inlet pipe.

The middle part of the bottom of the lower shell is an inward-concave cambered surface.

In the above muffler, since the cavity is arranged on the partition plate, after the waste gas enters from the air inlet pipe, the waste gas firstly enters the upper shell from the upper part of the air inlet pipe, enters the lower shell through the vent hole on the partition plate, then enters the cavity through the air inlet hole at the bottom of the cavity, and finally is discharged through the air outlet hole, compared with the prior art, the waste gas can be discharged from the air outlet hole only after passing through the cavity, that is, the waste gas can be discharged from the air outlet hole only after consuming energy and reducing noise, so that the muffling effect is good.

Drawings

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

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;

fig. 4 is an exploded view of the muffler of fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more and "several" means two or more unless otherwise specified.

As shown in fig. 1, 2, 3 and 4, the present invention discloses a silencer, which comprises a silencing chamber, an air inlet pipe 13 and a support plate 10. The anechoic chamber comprises an upper shell 3, a lower shell 19 and a partition plate. The lower port of the upper housing 3 is disposed on the upper port of the lower housing 19, and the partition is located between the upper housing 3 and the lower housing 9. The shell is provided with an air outlet 20, the clapboard is provided with a cavity, and the bottom of the cavity is provided with an air inlet 4. The cavity is connected with the air outlet hole 20, the partition plate is provided with an air vent, and the upper end of the air inlet pipe 13 penetrates through the middle parts of the lower shell 19 and the partition plate and is positioned inside the upper shell 3.

In order to simplify the structure and facilitate the manufacture, the partition plate comprises an upper partition plate 5 and a lower partition plate 17, an upper cavity 11 is arranged on the upper partition plate 5, a plurality of air holes 6 are arranged on the upper partition plate 5, a lower cavity 22 is arranged on the lower partition plate 17, and a through hole 8 is arranged on the lower partition plate 17, wherein the through hole 8 corresponds to the air holes 6. The upper baffle plate 5 is arranged on the lower baffle plate 17, and the lower cavity 22 on the lower baffle plate 17 and the upper cavity 11 on the upper baffle plate 5 form the cavity. The cavity is provided with an air outlet channel 21, and the air outlet channel 21 is communicated with the air outlet hole 20. The air inlet pipe 13 penetrates through the opening 14 formed in the middle of the upper partition plate 5 and the lower partition plate 17, and the air inlet hole 4 is formed in the bottom of the lower cavity 22.

In order to further reduce the noise and the pressure of the waste gas outlet, the cavity is provided with another air outlet channel 7, the silencing chamber is provided with another air outlet hole 9, and the other air outlet hole 9 is communicated with the other air outlet channel 7 arranged in the cavity.

In order to further consume energy and reduce noise, the upper end opening of the air inlet pipe 13 is provided with a pipe cover 15, and the upper end part of the air inlet pipe 13 is provided with an air hole 16.

In order to improve the strength, the top of the upper housing 3 is provided with a fixing hole 2, and a tube cover 15 of the air inlet tube 13 is disposed below the fixing hole 2.

In order to improve the heat insulation effect, a heat shield 1 is arranged above the fixing hole 2, and the heat shield 1 is arranged on the top of the upper shell 3.

In order to further improve the heat insulation effect, the heat shield 1 is provided with a convex circle which protrudes outwards.

In order to improve the heat dissipation effect, the support plate 10 is provided with heat dissipation holes 11.

For the convenience of installation, a flange 12 is arranged on the lower port of the air inlet pipe 13.

For further energy consumption and noise reduction, the bottom middle part of the lower shell 19 is an inward-concave cambered surface 18.

When the silencer is used, waste gas enters the air inlet pipe 13 from the lower end of the air inlet pipe 13, the waste gas is sprayed out from the air hole 16 in the upper portion of the air inlet pipe 13, the air flow impacts the inner side face of the upper shell 3 to form diffuse reflection, the air flow is diffused in all directions, the energy of the air flow is greatly attenuated, energy consumption and noise reduction are facilitated, the attenuated air flow enters the left side of the inner portion of the lower shell 19 through the air hole 6 in the upper partition plate 5 and the through hole 8 in the lower partition plate 17, the air flow collides with the lower shell 19 and the lower partition plate 17 in the space, further energy consumption and noise reduction are achieved, the impacted air flow enters the cavity through the air inlet hole 4 in the bottom of the cavity, the air flow collides with the upper inner portion of the cavity in the cavity, the energy of the air flow is further attenuated, and finally the air flow is discharged through the air outlet hole of the shell. Therefore, the waste gas is exhausted from the exhaust hole after multiple times of energy consumption and noise reduction, so that the noise elimination effect is good.

The channel formed between the part of the lower shell 4 which is inwards concave 8 and the lower clapboard 3 enters the other side 9 in the lower shell 3, and after the part of the lower shell 4 and the lower clapboard 3 are impacted, after passing through the corresponding vent holes 13 arranged on the upper clapboard 2 and the lower clapboard 3, the air flow enters the upper shell 1, because the center of the top of the upper shell 1 is protruded outwards by the 5, the airflow can be fully impacted in the upper cavity between the upper shell 1 and the upper clapboard 2 to form diffuse reflection, the airflow is diffused in all directions, the energy of the airflow is greatly attenuated, the airflow further consumes energy and reduces noise, then the air current enters the silencing cavity through an air inlet 14 on a combined cavity formed by the upper partition plate 2 and the lower partition plate 3 of the silencing cavity, the air current is impacted in the combined cavity to form diffuse reflection, so that the energy of the air current is further attenuated, and finally the air current is discharged from a combined exhaust pipe 11 formed by an upper exhaust passage 15 on the upper partition plate 2 and a lower exhaust passage 17 on the lower partition plate 3. From the above, the exhaust gas is exhausted from the exhaust pipe after multiple times of energy consumption and noise reduction, so the noise elimination effect is good.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. The utility model provides a muffler, includes amortization room, intake pipe and mounting panel, and the amortization room contains casing, lower casing and baffle down, and the lower port that goes up the casing sets up on the last port of casing down, and the baffle is located between casing and the lower casing, is equipped with the venthole on the casing, its characterized in that, be equipped with the cavity on the baffle, the bottom of cavity is equipped with the inlet port, the cavity with the venthole links to each other, is equipped with the air vent on the baffle, the upper end of intake pipe passes casing and baffle middle part down and is located the inside of casing.

2. The silencer of claim 1, wherein the partition comprises an upper partition and a lower partition, the upper partition has an upper cavity, the upper partition has a plurality of air holes, the lower partition has a lower cavity, the lower partition has a plurality of through holes corresponding to the air holes, the upper partition is disposed on the lower partition, the lower cavity of the lower partition and the upper cavity of the upper partition form the cavity, the cavity has an air outlet channel, the air outlet channel is communicated with the air outlet hole, the air inlet pipe passes through the opening formed in the middle of the upper partition and the lower partition, and the air inlet hole is formed in the bottom of the lower cavity.

3. The silencer of claim 2, wherein the chamber is provided with another outlet passage, and the silencing chamber is provided with another outlet hole communicated with the other outlet passage provided in the chamber.

4. The muffler of claim 1, wherein the upper port of the inlet pipe is provided with a pipe cover, and the upper end of the inlet pipe is provided with an air hole.

5. The muffler of claim 4, wherein a fixing hole is provided on a top of the upper housing, and a cover of the intake pipe is disposed below the fixing hole.

6. The muffler of claim 5, wherein a heat shield is provided above the fixing hole, the heat shield being provided on a top portion of the upper shell.

7. The muffler of claim 6, wherein the heat shield has an outwardly convex bead thereon.

8. The silencer of claim 1, wherein the support plate has heat dissipating holes.

9. The silencer of claim 1, wherein the lower port of the inlet pipe is provided with a flange.

10. The muffler of claim 1, wherein the bottom middle portion of the lower housing is an inwardly concave arc.

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