CN207337907U

CN207337907U - Silencer

Info

Publication number: CN207337907U
Application number: CN201721257527.8U
Authority: CN
Inventors: 刘剑华; 李丽; 何忠
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2018-05-08
Anticipated expiration: 2027-09-27

Abstract

The utility model discloses a kind of silencer, the silencer includes：Housing, multiple chambers being sequentially distributed vertically are limited in the housing, adjacent chamber is connected by recirculation hole, chamber and tail chamber headed by the two chambers difference of outermost end, it is middle part chamber positioned at middle chamber, the head chambers and the tail chamber are respectively equipped with the first gas outlet and the second gas outlet being in communication with the outside；And air inlet pipe, the air inlet pipe are stretched into the housing and are connected with the middle part chamber.According to the silencer of the utility model embodiment, internal gas flow is evenly distributed, erasure effect is more preferable.

Description

Silencer

Technical field

Silencer technical field is the utility model is related to, in particular to a kind of silencer.

Background technology

In correlation technique, the air inlet pipe and air outlet pipe of silencer are located at the both ends of silencer respectively, and gas is from silencer One end enters, and is discharged after the aperture in air inlet pipe and each expansion cavity of inside eliminate partial noise through exhaust pipe.It is above-mentioned The air flow method of structure is uneven, and erasure effect is poor, and the frequency noise that silencer can eliminate is limited in scope.

Utility model content

The utility model is intended at least solve one of technical problem existing in the prior art.For this reason, the utility model carries Go out a kind of internal gas flow be evenly distributed, the more preferable silencer of erasure effect.

Included according to the silencer of the utility model embodiment：Housing, limit in the housing it is multiple vertically successively The chamber of distribution, adjacent chamber are connected by recirculation hole, chamber and tail chamber headed by the two chambers difference of outermost end, It is middle part chamber positioned at middle chamber, the head chambers and the tail chamber are respectively equipped with the first gas outlet being in communication with the outside With the second gas outlet；And air inlet pipe, the air inlet pipe are stretched into the housing and are connected with the middle part chamber.

According to the silencer of the utility model embodiment, by making air-flow and noise flow directly into middle part chamber from the external world, And uniform divided flows, in the chamber of center lumen room both sides, finally warp is located at the first gas outlet of first chamber and positioned at tail respectively The second gas outlet discharge of chamber, air-flow and noise are one in gas-flow resistance and acoustical absorptivity so derived from housing both ends Cause, and good erasure effect is attained by the first gas outlet and the second gas outlet.

The silencer of one embodiment according to the present utility model, at least described first chamber and described in the multiple chamber Quieter material is equipped with tail chamber.

In certain embodiments, silencer further includes：First air outlet pipe, the import of first air outlet pipe are described with being located at One chamber of the side of middle part chamber is connected, and the outlet of first air outlet pipe is formed as first gas outlet；With Two air outlet pipes, the import of second air outlet pipe are connected with a chamber of the opposite side positioned at the middle part chamber；It is described The outlet of second air outlet pipe is formed as second gas outlet.

Alternatively, the side wall of first air outlet pipe has multiple the first bloops being connected with the first chamber, institute The side wall for stating the second air outlet pipe has multiple the second bloops being connected with the tail chamber.

Alternatively, the number of the chamber is for odd number and more than or equal to five, the import of first air outlet pipe with Chamber between the middle part chamber and the first chamber is connected, the import of second air outlet pipe with described Chamber between portion's chamber and the tail chamber is connected.

Alternatively, the air inlet pipe passes through the side wall of the housing, and first air outlet pipe passes through one end of the housing And second air outlet pipe passes through the other end of the housing.

The silencer of one embodiment according to the present utility model, the side wall of the air inlet pipe have multiple 3rd noise reductions Hole, the air inlet pipe are connected by the 3rd bloop with the middle part chamber.

Alternatively, one end of the air inlet pipe is stretched into the housing and is closed by closeouts.

Alternatively, one end of the air inlet pipe is stretched into the housing and is extended successively vertically, institute through the first chamber The other end for stating air inlet pipe is stretched out outside the center lumen room.

The silencer of one embodiment according to the present utility model, the housing include：Shell body；And multiple partition plates, The multiple partition plate is distributed in the shell body successively vertically, and the partition plate limits described jointly with the housing Multiple chambers, the recirculation hole are formed on the multiple partition plate.

The additional aspect and advantage of the utility model will be set forth in part in the description, partly by from following description In become obvious, or recognized by the practice of the utility model.

Brief description of the drawings

The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment Become obvious and be readily appreciated that, wherein：

Fig. 1 is the partial schematic diagram (part for only showing shell body) according to the silencer of the utility model embodiment.

Fig. 2 is the schematic diagram according to the silencer of the utility model embodiment.

Reference numeral：

Silencer 100,

Housing 10, shell body 11, partition plate 12, first chamber 13, tail chamber 14, middle part chamber 15, second chamber 16, the 4th chamber Room 17,

Air inlet pipe 20, the 3rd bloop 21,

First air outlet pipe 30, the first gas outlet 31, the import 32 of the first air outlet pipe, the first bloop 33,

Second air outlet pipe 40, the second gas outlet 41, the import 42 of the second air outlet pipe, the second bloop 43,

Closeouts 50.

Embodiment

The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that to the utility model Limitation.

Silencer 100 below with reference to Fig. 1 to Fig. 2 descriptions according to the utility model embodiment.

As depicted in figs. 1 and 2, included according to the silencer 100 of the utility model embodiment：Housing 10 and air inlet pipe 20.Multiple chambers being sequentially distributed vertically are limited in housing 10, adjacent chamber is connected by recirculation hole (not shown) Logical, chamber 13 and tail chamber 14 headed by the two chambers difference of outermost end, are middle part chamber 15 positioned at middle chamber, first Chamber 13 and tail chamber 14 are respectively equipped with the first gas outlet 31 being in communication with the outside and the second gas outlet 41, air inlet pipe 20 stretch into shell It is connected in body 10 and with middle part chamber 15.

According to the silencer 100 of the utility model embodiment, by making air-flow and noise flow directly into center lumen from the external world Room 15, and uniform divided flows finally pass through the first outlet positioned at first chamber 13 respectively in the chamber of 15 both sides of center lumen room Mouthfuls 31 and discharged positioned at the second gas outlet 41 of tail chamber 14, air-flow and noise are hindered in air-flow so derived from 10 both ends of housing Power is consistent with being on acoustical absorptivity, and good noise reduction effect is attained by the first gas outlet 31 and the second gas outlet 41 Fruit.

It is appreciated that the number of chamber is more than 3, that is to say, that first chamber 13, tail chamber are included at least in multiple chambers Room 14 and middle part chamber 15.When the number of chamber is odd number, middle part chamber 15 is exactly positioned at a middle chamber；Work as chamber When the number of room is even number, the number positioned at middle chamber is two, and air inlet pipe 20 is stretched into positioned at middle two at this time It can connect respectively in a chamber and with two chambers.

Preferably, in multiple chambers quieter material is equipped with least first chamber 13 and tail chamber 14.Specifically Ground, quieter material can be silencing cottons, and full silencing cotton can be filled in first chamber 13 and tail chamber 14.In this way, quieter material Setting makes silencer 100 be formed as impedance composite muffler 100, and noise not only carries out acoustic reactance noise reduction by noise-reducing structure, and And impedance noise reduction is carried out by quieter material, the frequency range for the noise that can be eliminated is wider, and erasure effect is more preferable.

Noise reduction principle and noise reduction process for the embodiment are summarized as follows：From air inlet pipe 20 to intermediate cavity, by means of The unexpected of pipeline section is expanded so that the sound wave for some frequencies propagated in housing 10 is reflected back at mutation to Sounnd source direction Go, so as to achieve the purpose that acoustic reactance is eliminated the noise, effectively eliminate Low Medium Frequency noise；In addition, air-flow and noise are from the first gas outlet 31 and second gas outlet 41 discharge before through quieter material carry out impedance noise reduction, further to eliminate medium-high frequency noise.

In the specific embodiment shown in Fig. 1, only silencing cotton, Ke Yili are filled with first chamber 13 and tail chamber 14 Solution, the utility model is not limited to this, silencing cotton can also be arranged in addition to first chamber 13 and tail chamber 14 other are suitable In chamber.

In certain embodiments, silencer 100 further includes：First air outlet pipe 30 and the second air outlet pipe 40, the first air outlet pipe 30 import 32 is connected with a chamber of the side positioned at middle part chamber 15, and the outlet of the first air outlet pipe 30 is formed as first Gas outlet 31, the import 42 of the second air outlet pipe 40 are connected with a chamber of the opposite side positioned at middle part chamber 15, and second goes out The outlet of tracheae 40 is formed as the second gas outlet 41.

Specifically, the both ends of the first air outlet pipe 30 are respectively formed as 32 and first air outlet pipe 30 of import of the first air outlet pipe 30 Outlet, the both ends of the second air outlet pipe 40 are respectively formed as the outlet of 42 and second air outlet pipe 40 of import of the second air outlet pipe 40, The import 42 of 32 and second air outlet pipe 40 of import of first air outlet pipe 30 is located in housing 10, the outlet of the first air outlet pipe 30 and The outlet of two air outlet pipes 40 is located at outside housing 10.

Thus, air-flow and noise flow in the chamber of intermediate cavity both sides respectively through intermediate cavity, and respectively through shape Discharged into the first gas outlet 31 in the first air outlet pipe 30 and the second gas outlet 41 being formed in the second air outlet pipe 40, this Sample, the air-flow and noise discharged out of intermediate cavity energy during being flowed to first chamber 13 and tail chamber 14 are gradually disappeared Consumption, noise are lowered, are finally discharged from the first air outlet pipe 30 and the second air outlet pipe 40.

In certain embodiments, the side wall of the first air outlet pipe 30 has multiple the first bloops being connected with first chamber 13 33, the side wall of the second air outlet pipe 40 has multiple the second bloops 43 being connected with tail chamber 14.Specifically, referring to Fig. 1 institutes Show, the number of the first bloop 33 is multiple and is to surround the aperture that the side wall of the first air outlet pipe 30 is distributed, the first bloop 33 In first chamber 13；The number of second bloop 43 is aperture that is multiple and being the side wall distribution for surrounding the second air outlet pipe 40, Second bloop 43 is located in tail chamber 14.

Specifically, air-flow and noise enter intermediate cavity through air inlet pipe 20, and from intermediate cavity both sides, direction is first respectively afterwards Chamber 13 and tail chamber 14 flow, and a part of air-flow and noise are introduced into first chamber through recirculation hole during the first chamber 13 of flow direction In room 13, then enter the first air outlet pipe 30 through the first bloop 33 and finally discharged through the first gas outlet 31, another part air-flow Directly enter with noise from the import 32 of the first air outlet pipe 30 and discharged from first row gas port.Similarly, tail chamber 14 is being flowed to During a part of air-flow and noise be introduced into through recirculation hole in tail chamber 14, then through the second bloop 43 enter the second outlet Pipe 40 is simultaneously finally discharged through the second gas outlet 41, and another part air-flow and noise directly enter from the import 42 of the second air outlet pipe 40 And discharged from second exhaust port.

In this way, the first bloop 33 and the second bloop 43 be arranged to air-flow and noise provides a variety of circulation paths, It further enhancing the effect of acoustic reactance formula noise reduction.

Certainly, the first bloop 33 can not also be connected with first chamber 13, and be connected with other chambers in addition to first chamber 13 Logical, the second bloop 43 can not also be connected with tail chamber 14, and with other chambers in addition to tail chamber 14.Quieter material can To be arranged in the chamber that the first bloop 33 connected with the second bloop 43.In this way, enter through corresponding bloop Before tracheae discharge, high frequency noise can be eliminated by quieter material.

Specifically, the number of chamber is for odd number and more than or equal to five, and the import 32 of the first air outlet pipe 30 is with being located at Chamber between middle part chamber 15 and first chamber 13 is connected, and the import 42 of the second air outlet pipe 40 is with being located at middle part chamber 15 and tail Chamber between chamber 14 is connected.In the specific embodiment shown in Fig. 1, the number of chamber is 5, and definition is positioned at first chamber 13 and middle part chamber 15 in chamber be second chamber 16, the chamber in tail chamber 14 and middle part chamber 15 is the 4th chamber 17, the import 32 of the first air outlet pipe 30 can be connected with second chamber 16, and the import of the second gas outlet 41 can be with the 4th chamber Room 17 is connected.Thus, air-flow be able to can be fully absorbed in housing 10 by abundant noise reduction, the energy of sound wave, noise reduction effect Fruit is more preferable.

Alternatively, as shown in Fig. 2, air inlet pipe 20 passes through the side wall of housing 10, the first air outlet pipe 30 passes through the one of housing 10 End and the second air outlet pipe 40 pass through the other end of housing 10.In this way, the more compact structure of silencer 100, arrangement are more reasonable.

The silencer 100 of one embodiment according to the present utility model, the side wall of air inlet pipe 20 have multiple 3rd noise reductions Hole 21, air inlet pipe 20 are connected by the 3rd bloop 21 with middle part chamber 15.Specifically, the 3rd bloop 21 is around air inlet Multiple apertures of the side wall distribution in hole.Thus, air-flow and noise enter sound during the chamber 15 of middle part through the 3rd bloop 21 Ripple is weakened, and further increases acoustic reactance erasure effect.

Wherein, one end of air inlet pipe 20 is stretched into housing 10 and is closed by closeouts 50.In other words, air inlet pipe 20 goes out End where mouthful is closed by closeouts 50, is leaked to avoid air-flow from the end, such air-flow is only from the 3rd bloop of air inlet pipe 20 21 discharges, to provide enough pressure for the discharge of air-flow, enhance flow velocity of the gas in silencer 100, erasure effect More preferably.

Alternatively, one end of air inlet pipe 20 is stretched into housing 10 and is extended successively vertically, the air inlet through first chamber 13 The other end of pipe 20 is stretched out outside the chamber 15 of middle part.Thus, arrangement of the air inlet pipe 20 on silencer 100 is more reasonable, compact.

The silencer 100 of one embodiment according to the present utility model, housing 10 include：Shell body 11 and multiple partition plates 12, multiple partition plates 12 are distributed in shell body 11 successively vertically, and partition plate 12 limits multiple chambers jointly with housing 10, Recirculation hole is formed on multiple partition plates 12.

Specifically, in the specific embodiment shown in Fig. 1, shell body 11 is tubular, axis of four partition plates 12 along housing 10 To being sequentially distributed and being spaced apart, chamber is limited between partition plate 12 and shell body 11 jointly, is respectively provided with each partition plate 12 multiple Recirculation hole.In this way, and recirculation hole by be distributed in partition plate 12 on spaced apart by partition plate 12 connects between adjacent chamber.By This, is more convenient processing and batch production.

In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified structure or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model System.In addition, define " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ". In the description of the utility model, unless otherwise indicated, " multiple " are meant that two or more.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can combine in an appropriate manner in any one or more embodiments or example.

While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that： These embodiments can be carried out with a variety of changes, modification in the case where not departing from the principle and objective of the utility model, replaced And modification, the scope of the utility model are limited by claim and its equivalent.

Claims

A kind of 1. silencer, it is characterised in that including：

Housing, limits multiple chambers being sequentially distributed vertically in the housing, adjacent chamber is connected by recirculation hole, position In outermost end two chambers respectively headed by chamber and tail chamber, be middle part chamber positioned at middle chamber, the head chambers with The tail chamber is respectively equipped with the first gas outlet and the second gas outlet being in communication with the outside；And

Air inlet pipe, the air inlet pipe are stretched into the housing and are connected with the middle part chamber.
2. silencer according to claim 1, it is characterised in that at least described first chamber and described in the multiple chamber Quieter material is equipped with tail chamber.
3. silencer according to claim 1 or 2, it is characterised in that further include：

First air outlet pipe, the import of first air outlet pipe are connected with a chamber of the side positioned at the middle part chamber, The outlet of first air outlet pipe is formed as first gas outlet；With

Second air outlet pipe, the import of second air outlet pipe are connected with a chamber of the opposite side positioned at the middle part chamber It is logical；The outlet of second air outlet pipe is formed as second gas outlet.
4. silencer according to claim 3, it is characterised in that the side wall of first air outlet pipe have it is multiple with it is described The first bloop that first chamber is connected, the side wall of second air outlet pipe have it is multiple be connected with the tail chamber second Bloop.
5. silencer according to claim 3, it is characterised in that the number of the chamber is odd number and is greater than or equal to Five, the import of first air outlet pipe is connected with the chamber between the middle part chamber and the first chamber, described The import of second air outlet pipe is connected with the chamber between the middle part chamber and the tail chamber.
6. silencer according to claim 3, it is characterised in that the air inlet pipe passes through the side wall of the housing, described First air outlet pipe passes through the other end of the housing through one end of the housing and second air outlet pipe.
7. silencer according to claim 1, it is characterised in that the side wall of the air inlet pipe has multiple 3rd noise reductions Hole, the air inlet pipe are connected by the 3rd bloop with the middle part chamber.
8. silencer according to claim 7, it is characterised in that one end of the air inlet pipe is stretched into the housing and logical Cross closeouts closing.
9. silencer according to claim 7, it is characterised in that institute is stretched into one end of the air inlet pipe through the first chamber State in housing and extend successively vertically, the other end of the air inlet pipe is stretched out outside the center lumen room.
10. silencer according to claim 1, it is characterised in that the housing includes：

Shell body；And

Multiple partition plates, the multiple partition plate are distributed in the shell body successively vertically, the partition plate and the housing The multiple chamber is limited jointly, and the recirculation hole is formed on the multiple partition plate.