CN201412208Y

CN201412208Y - Muffler

Info

Publication number: CN201412208Y
Application number: CN2009200647410U
Authority: CN
Inventors: 郑邑明; 史宗敬
Original assignee: Individual
Current assignee: CHANGSHA HAOBO MACHINERY EQUIPMENT Co Ltd
Priority date: 2009-06-09
Filing date: 2009-06-09
Publication date: 2010-02-24
Anticipated expiration: 2019-06-09

Abstract

The utility model discloses a muffler comprising a shell, wherein an air inlet pipe is arranged on one end of the shell, and an air exhaust pipe is arranged on the other end; the part of the air inletpipe in the shell is a conical pipe body, and air holes are distributed on the pipe wall of the conical pipe body; an arc-hole plate and an external pipe are orderly arranged between one side of theair inlet pipe in the shell and the air exhaust pipe; an air inlet of the external pipe is in a horn shape, and air holes are distributed on the pipe wall of the external pipe; and an inner chamber ofthe shell is divided into different air chambers by the air inlet of the external pipe. A flowing process of air flow in the muffler is optimized to enable the air flow to meet different resistance and multiple shunting in a divergent- convergent- divergent path, the flow direction and the flow speed are continuously changed to generate the functions of throttling, secondary vortexing, turbulence, and the like, and the noise is reduced. In addition, the utility model has the advantages of that the structure is simpler; the air flow flows fluently; and the power loss can be reduced.

Description

A kind of silencing apparatus

Technical field

The utility model belongs to silencing apparatus, is specifically related to a kind of silencing apparatus that is used for institute's mounted engine on vehicle or the equipment.

Background technique

At present, the silencing apparatus of institute's mounted engine is divided into hush pipe, mazy type, twin-stage noise reduction, fills sound absorbing material etc. according to different structure on vehicle or the equipment.Though these silencing apparatuss can play throttling, disturbance, slow effect to air-flow, but fail to combine, in the design air motion is not well optimized, so the performance of product embodies two kinds of results: a kind of is excellent noise reduction effect, but power loss is big, another kind is then just the opposite---and power loss is little, but noise is big.Its reason is that existing silencing apparatus structurally exists the back pressure height, easily long-pending oil, the defectives such as dirt and obstruction, noise reduction difference of receiving.

The model utility content

The purpose of this utility model is at the problems referred to above, provides a kind of and both can effectively reduce noise, can reduce the silencing apparatus of power loss again.

Realize that the technological scheme that above-mentioned purpose adopts is: silencing apparatus comprises a housing, is provided with suction tude at an end of housing, and the other end is provided with outlet pipe; The part that described suction tude is positioned at housing adopts the conical tube that is distributed with vent on the tube wall, a side of suction tude is to being provided with arc orifice plate, outer tube between the outlet pipe successively in housing, the suction port of outer tube is horn-like, be distributed with vent on the tube wall of outer tube, the suction port of described outer tube is separated into different air chambers with the housing inner chamber.

Further technological scheme is:

Be with the interior pipe that is distributed with vent on the tube wall in the described outer tube.

The air outlet of described outer tube is horn-like, and with the suction port of described outer tube the housing inner chamber is separated into different air chambers.

The utility model is optimized by the flow process of air-flow in silencing apparatus that motor is discharged, utilize the vent on suction tude, arc plate, outer tube and the interior pipe, make and run into different resistances and repeatedly shunting in the path of air-flow---convergent---flaring at flaring, constantly change the flow direction and flow velocity and produce effects such as throttling, secondary eddy current, flow-disturbing, the frequency and the amplitude of the sound wave that produces also are not quite similar, and reach the purpose of noise reduction.The utility model is structurally simpler in addition, makes air-flow more unobstructed, can overcome existing muffler back pressure height, easily amasss oily, as to receive dirt and obstruction defective, to reduce power loss.

Further specify the technical solution of the utility model below in conjunction with accompanying drawing.

Description of drawings

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

Fig. 2 is a different structure schematic representation of the present utility model.

Embodiment

Embodiment 1

See Fig. 1, silencing apparatus comprises a housing 4, is provided with suction tude 1 at an end of housing 4, and the other end is provided with outlet pipe 9; The part of suction tude 1 stretches in the housing from the front end-plate 2 of housing, and this part adopts conical tube 101, is distributed with vent 102 on the tube wall, and conical tube 101 1 sides of suction tude are to being provided with arc orifice plate 3, outer tube 7 between the outlet pipe 9 successively in housing; Have vent 301 on the arc orifice plate 3, the suction port 5 of outer tube 7 and air outlet 8 are horn-like, and suction port 5 is separated into three different air chambers with air outlet 8 with housing 4 inner chambers, is distributed with vent 701 on the tube wall of outer tube 7; Be with the interior pipe 11 that is distributed with vent 110 on the tube wall in the outer tube 7, an end of interior pipe 11 is fixed on by fagging 6 on the inwall of outer tube 7, and the other end is fixed on the end plate 10 of housing by gusset 12.Housing can adopt cylinder or square tube, also can adopt other shape.

Enter suction tude 1 back from the air-flow of motor and form a flaring process from conical tube 101 to arc plate between 3, through arc plate 3 backs suction port 5, outer tube 7, convergent process of interior pipe 11 formation to outer tube, when entering, the air outlet 8 from interior pipe 11 to outer tube 7 forms a flaring process in the housing 4 again, after outlet pipe 9 dischargings.

Embodiment 2

Silencing apparatus also can adopt structure as shown in Figure 2, and pipe in the cancellation, outer tube 7 have only suction port 5 to adopt horn-like being fixed on the housing 4, and housing 7 inner chambers are separated into two air chambers, and the other end air outlet of outer tube 7 is fixed on the end plate 10 of housing.

Claims

1, a kind of silencing apparatus comprises a housing, is provided with suction tude at an end of housing, and the other end is provided with outlet pipe; It is characterized in that the part that described suction tude is positioned at housing adopts the conical tube that is distributed with vent on the tube wall, a side of suction tude is to being provided with arc orifice plate, outer tube between the outlet pipe successively in housing, the suction port of outer tube is horn-like, be distributed with vent on the tube wall of outer tube, the suction port of described outer tube is separated into different air chambers with the housing inner chamber.

2, silencing apparatus according to claim 1 is characterized in that being with in the described outer tube the interior pipe that is distributed with vent on the tube wall.

3, silencing apparatus according to claim 1 and 2, the air outlet that it is characterized in that described outer tube is horn-like, and with the suction port of described outer tube the housing inner chamber is separated into different air chambers.