CN204783175U

CN204783175U - Novel silencer

Info

Publication number: CN204783175U
Application number: CN201520202535.7U
Authority: CN
Inventors: 刘德香
Original assignee: WUWI HONGHU MUFFLER CO Ltd
Current assignee: WUWI HONGHU MUFFLER CO Ltd
Priority date: 2015-04-03
Filing date: 2015-04-03
Publication date: 2015-11-18
Anticipated expiration: 2025-04-03

Abstract

The utility model discloses a novel silencer, include silencer body (2) that are equipped with air inlet (1) and gas outlet (9) for tubular structure and both ends respectively, its characterized in that, silencer body (2) include with air inlet (1), gas outlet (9) the intercommunication first inner chamber (4) and with first inner chamber (4) parallel second inner chamber (6) that just cut off, first inner chamber (4) and second inner chamber (6) communicate with both equal vertically neck tube (7) through one, and neck tube (7) are high temperature resistant stainless steel. The utility model discloses well high -velocity air makes a round trip to vibrate in neck tube (7), forms the resonance air current post of certain frequency. The themogenesis that rubs repeatedly of the stainless steel wall of resonance air current post and neck tube (7) to and the damped motion of air current post itself, the acoustic energy that will exhaust changes heat energy into and gives off, thereby reaches the effect of noise elimination.

Description

A kind of model muffler

Technical field

The utility model relates to a kind of model muffler.

Background technique

As everyone knows, automotive muffler is a kind of device of the exhaust sound being used for reducing motor car engine, be widely used in automobile manufacturing field, existing automotive muffler is mainly impedance composite muffler, it mainly utilizes sound wave to superpose principle of interference and is made, but these silencing apparatuss effect when eliminating the low-frequency noise within 200Hz is all poor.

Model utility content

The technical problems to be solved in the utility model is to provide the good automotive muffler of a kind of soundproof effect, and it effectively can eliminate the noise of any frequency band according to the change of structural parameter.

For solving the problem, the utility model provides a kind of model muffler, to comprise for tubular structure and two ends are respectively equipped with the muffler body of suction port and air outlet, it is characterized in that, described muffler body comprises the first inner chamber of being communicated with described suction port, air outlet and with described first extend parallel and the second inner chamber cut off, described first inner chamber is communicated with both all vertical neck tubes by one with the second inner chamber.

As further improvement of the utility model, described second inner chamber is arranged in the inwall of described first cavity outer wall and muffler body.

As further improvement of the utility model, also comprise vibration damping metal gasket, described air outlet is connected by vibration damping metal gasket with between body.

As further improvement of the utility model, the outer wall of described muffler body is stepped, and described neck tube is fixed on the outer wall of described first inner chamber, and described first inner chamber and outer wall thereof can do straight line motion vertically in described muffler body.

As further improvement of the utility model, described muffler body and described suction port and air outlet are equipped with flange plate.

The beneficial effects of the utility model are, in the utility model, fraction enters into the second inner chamber by neck tube from the first inner chamber, air-flow propagates the phenomenon forming high low pressure alternation back and forth in the second inner chamber and the first inner chamber, and produce resonance at neck tube place, pneumatic noise is changed into heat energy by the damped motion produced during air-flow resonance and fricting movement, thus reaches the effect of noise elimination.The resonance of air-flow may cause neck tube and the first inner chamber metal wall to produce vibration, thus produces secondary exciting noise, and vibration damping metal gasket effectively by the shock absorption of metal tube, thus can prevent quadratic noise.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Wherein: 1-suction port; 2-muffler body; 4-first inner chamber 4; 6-second inner chamber; 7-neck tube; 8-vibration damping metal gasket; 9-air outlet.

Embodiment

Below embodiment of the present utility model is described in further detail.

As the structural representation that Fig. 1 is the first embodiment of the present utility model, it comprises for tubular structure and two ends are respectively equipped with the muffler body 2 of suction port 1 and air outlet 9, it is characterized in that, described muffler body 2 comprises and the first inner chamber 4 that described suction port 1, air outlet 9 are communicated with and and second inner chamber 6 that cut off parallel with described first inner chamber 4, described first inner chamber 4 is communicated with both all vertical neck tubes 7 by one with the second inner chamber 6, and described second inner chamber 6 is arranged in the inwall of described first inner chamber 4 outer wall and muffler body 2.The outlet side of the first inner chamber 4 is connected with adopting vibration damping metal gasket 8 between body 2.

In the utility model, engine exhaust air-flow enters silencing apparatus first inner chamber 4 by suction port 1, and portion discharge enters into the second lower inner chamber 6 of pressure by neck tube 7 from the first inner chamber 4, and all the other exhausts are directly flowed out by air outlet 9 by the first inner chamber 4.Portion discharge is constantly assembled compression and is formed inner high voltage in the second inner chamber 6, when the inner high voltage in the second inner chamber 6 is greater than the exhaust pressure in the first inner chamber 4, high pressure draught in second inner chamber 6 recoils into the first inner chamber 4 by neck tube 7, second inner chamber 6 is by again forming low pressure after pressure release, when the exhaust pressure in the first inner chamber 4 is greater than the low pressure in the second inner chamber 6, exhaust is filled with the second inner chamber 6 by neck tube 7 again, so by being vented the inertia repeated action of pressurising and pressure release, high velocity air is oscillate in neck tube 4, forms the resonance air-flow post of certain frequency.The stainless steel wall frictional heat repeatedly of resonance air-flow post and neck tube 7, and the damped motion of air-flow post itself, change into heat energy by exhaust acoustic energy and dissipate.

Described silencing apparatus comprises vibration damping metal gasket 8, the effect of vibration damping metal gasket 8 is when the air-flow in neck tube 7 produces resonance, air-flow is effectively absorbed by damping function the vibration excited by impact that the metal pipe-wall of neck tube 7 and cavity 4 produces, prevents the metal pipe-wall of neck tube 7 and cavity 4 from producing secondary vibration noise.

In second embodiment of the present utility model, the outer wall of described muffler body 2 is stepped, and described neck tube 7 is fixed on the outer wall of described first inner chamber 4, and described first inner chamber 4 and outer wall thereof can do straight line motion vertically in described muffler body 2.

Its function is substantially identical with the first embodiment, and difference is that the space of the second inner chamber 6 can regulate its inner space by moving axially, thus can regulate the type of noise elimination, for the automobile of different model.

Flange plate is equipped with in described suction port 1 and air outlet 9 as muffler body described in further improvement of the utility model 2.

In air outlet 9 and suction port 1, flange plate is set, for the connection with suction tude and steam outlet pipe.

Above embodiment is only the utility model a kind of mode of execution wherein, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims

1. a model muffler, to comprise for tubular structure and two ends are respectively equipped with the muffler body (2) of suction port (1) and air outlet (9), it is characterized in that, described muffler body (2) comprises and the first inner chamber (4) that described suction port (1), air outlet (9) are communicated with and and second inner chamber (6) that cut off parallel with described first inner chamber (4), and described first inner chamber (4) is communicated with both all vertical neck tubes (7) by one with the second inner chamber (6).

2. a kind of model muffler according to claim 1, is characterized in that, described second inner chamber (6) is arranged in the inwall of described first inner chamber (4) outer wall and muffler body (2).

3. a kind of model muffler according to claim 2, is characterized in that, also comprises vibration damping metal gasket (8), is connected between described air outlet (9) with body (2) by vibration damping metal gasket (8).

4. a kind of model muffler according to claim 3, it is characterized in that, the outer wall of described muffler body (2) is stepped, described neck tube (7) is fixed on the outer wall of described first inner chamber (4), and described first inner chamber (4) and outer wall thereof can do straight line motion vertically in described muffler body (2).

5. a kind of model muffler according to claim 4, is characterized in that, described muffler body (2) is equipped with flange plate with described suction port and air outlet.