CN202811025U - Improved structure of silencer - Google Patents

Improved structure of silencer Download PDF

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Publication number
CN202811025U
CN202811025U CN 201220493668 CN201220493668U CN202811025U CN 202811025 U CN202811025 U CN 202811025U CN 201220493668 CN201220493668 CN 201220493668 CN 201220493668 U CN201220493668 U CN 201220493668U CN 202811025 U CN202811025 U CN 202811025U
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China
Prior art keywords
pipe
tube
length
chamber
shell
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Expired - Fee Related
Application number
CN 201220493668
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Chinese (zh)
Inventor
连成堃
李胜玉
郭涛
侯亮
黄伟
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Xiamen XGMA Machinery Co Ltd
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Xiamen XGMA Machinery Co Ltd
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Priority to CN 201220493668 priority Critical patent/CN202811025U/en
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Publication of CN202811025U publication Critical patent/CN202811025U/en
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Abstract

The utility model discloses an improved structure of a silencer. The improved structure of the silencer comprises a shell, an inlet pipe and an outlet pipe. An inlet central pipe is inserted into the shell from the left end of the shell and an outlet central pipe is inserted into the shell from the right end of the shell, wherein the inlet central pipe and the outlet central pipe are parallel to each other. One end of the inlet central pipe is connected with a left separator, wherein the end of the inlet central pipe is inserted into the shell. One end of the outlet central pipe is connected with the right separator, wherein the end of the outlet central pipe is inserted into the shell. According to the improved structure of the silencer, the expanding inlet pipe and the expanding outlet pipe are respectively inserted into an expanding chamber through a method of inner connection pipe. The length of a first resonant chamber is two times bigger than the length of a second resonant chamber. The theoretical analysis shows that when the length of the inserted section of a pipe is one second of that of the whole pipe or the length of the inserted section of the pipe is one fourth of that of the whole pipe, opposite passing frequency can be eliminated. When the length of the inserted section of the pipe is one second of that of the whole pipe and the length of the inserted section of the pipe is one fourth of that of the whole pipe are combined, an ideal silencing effect can be achieved. In addition, due to the fact that the size of the resonant chambers and the expanding chamber, the diameter of small holes and the amount of the small holes are obtained through the theoretical analysis, the improved structure of the silencer has the advantages of being good in the silencing effect.

Description

The improvement structure of silencing apparatus
Technical field
The utility model relates to a kind of engineering vehicle, particularly relates to a kind of improvement structure of silencing apparatus.
Background technique
As shown in Figure 1 and Figure 2, the silencing apparatus that uses on the engineering machinery at present is installed on the vehicle frame, and its inlet tube docks with the relief opening of motor.The suppressor case 1 ' of commonly using is a sealed cavity, its inside is divided into three chambers by left and right dividing plate 11 ', 12 ' with this cavity, two ends, the left and right sides are respectively equipped with the first resonant chamber 13 ', the second resonant chamber 15 ', its middle part is provided with expansion chamber 14 ', be respectively equipped with center tube 2 ' at described the first resonant chamber 13 ', the second resonant chamber 15 ', reach center tube 3 ', described center tube 2 ', 3 ' is hollow circular tube, its outer wall is provided with some apertures, and described center tube 2 ' is mutually vertical with the axis of center tube 3 '; Described tailpipe is arranged on the top of expansion chamber 14 ', with expansion chamber 14 ' mutual conduction.Adopt said structure, cause the baffler volume large, its erasure effect is bad, and exhaust resistance is bigger than normal, causes the engine power loss bigger than normal, has simultaneously many frequencies of passing through, and little by the sound deadening capacity at frequency place, namely sound wave can the zero-decrement silencing apparatus that passes through.
The model utility content
The purpose of this utility model is to provide a kind of improvement structure of silencing apparatus of good muffling effect.
For achieving the above object, technical solution of the present utility model is:
The utility model is a kind of improvement structure of silencing apparatus, and it comprises housing, inlet tube, outer pipe; Described housing has the cavity of a sealing, is separated into three little cavitys by left clapboard and right clapboard in the cavity, respectively is the first resonant chamber, expansion chamber, the second resonant chamber; Described inlet tube and outer pipe insert respectively housing, and the part that they insert shell cavity is respectively import center tube and export center pipe, offers a plurality of apertures at the tube wall of import center tube and export center pipe; Offer respectively a plurality of convection holes on described left clapboard and the right clapboard; Described import center tube and export center pipe insert housing from the left and right two ends of housing respectively and are parallel to each other; The insertion shell ends of described import center tube be connected with left clapboard and the tube chamber of import center tube and left clapboard on a convection holes in a plurality of convection holes be communicated with; The insertion shell ends of described export center pipe be connected with right clapboard and the tube chamber of export center pipe and right clapboard on a convection holes in a plurality of convection holes be communicated with.
The length of described the first resonant chamber is two times of the second resonant chamber length, and the length of the first resonant chamber is 1/2nd of housing overall length.
Parallel distance between described import center tube and the export center pipe is the 30-40 millimeter.
Hole diameter on described import center tube and the export center tube wall is the 4-6 millimeter, and evenly distributes with identical spacing.
After adopting such scheme, because the utility model utilizes the method for inner connecting tube to insert respectively inlet tube and the outer pipe of expanding in the expansion chamber, and the length of the first resonant chamber is two times of the second resonant chamber length, from theory analysis as can be known, when Inserting Tube length equal respectively overall length 1/2 the time and 1/4 the time, can eliminate opposedly by frequency, the two is combined to get comparatively desirable soundproof effect.Again, the utility model draws the size of resonant chamber, expansion chamber, aperture and the quantity of aperture by theory analysis, thereby so that the utlity model has good erasure effect.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the axonometric drawing of commonly using silencing apparatus;
Fig. 2 is the sectional view of commonly using silencing apparatus;
Fig. 3 is sectional view of the present utility model;
Fig. 4 is side view of the present utility model;
Fig. 5 is axonometric drawing of the present utility model.
Embodiment
Such as Fig. 3, shown in Figure 5, the utility model is a kind of improvement structure of silencing apparatus, and it comprises housing 1, inlet tube 2, outer pipe 3.
Described housing 1 has the cavity of a sealing, is separated into three little cavitys by left clapboard 11 and right clapboard 12 in the cavity, respectively is the first resonant chamber 13, expansion chamber 14, the second resonant chamber 15.The length of described the first resonant chamber 13 is two times of the second resonant chamber 15 length, and the length of the first resonant chamber 13 is 1/2nd of housing 1 overall length.Offer respectively a plurality of convection holes 111,121 on described left clapboard 11 and the right clapboard 12; Described import center tube 21 and export center pipe 31 insert housing 1 from the left and right two ends of housing 1 respectively and are parallel to each other; Parallel distance L between import center tube 21 and the export center pipe 31 is 30-40 millimeter (as shown in Figure 4), the insertion shell ends of import center tube 21 be connected with left clapboard 11 and the tube chamber of import center tube 21 and left clapboard 11 on a convection holes 111 in a plurality of convection holes 111 be communicated with.The insertion shell ends of described export center pipe 21 be connected with right clapboard 12 and the tube chamber of export center pipe 21 and right clapboard 12 on a convection holes 121 in a plurality of convection holes 121 be communicated with.
Described inlet tube 2 and outer pipe 3 insert respectively housing 1, and the part that they insert housing 1 cavity is respectively import center tube 21 and export center pipe 31, offers a plurality of apertures at the tube wall of import center tube 21 and export center pipe 31.Hole diameter on described import center tube 21 and export center pipe 31 tube walls is the 4-6 millimeter, and evenly distributes with identical spacing.
Working principle:
Gas enters housing 1 from inlet tube 2, and a plurality of apertures from the tube wall of import center tube 21 flow out and enter the first resonant chamber 13, simultaneously, gas also from left clapboard 11 that import center tube 21 is communicated with on 111 outflows of a plurality of convection holes; Enter export center pipe 31 from left clapboard 11 convection holes 111 eluting gass by convection holes 121 on the right clapboard 12, and flow out from outer pipe 3, a plurality of apertures from export center pipe 31 tube walls flow out simultaneously.
The utility model is in equal volume even more in the silencing apparatus of small volume more obvious erasure effect (such as following table) can be arranged.
Figure BDA00002176434100031
Emphasis of the present utility model just is: import center tube and export center pipe insert housing from the left and right two ends of housing respectively and are parallel to each other.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, the equivalence of namely doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims (4)

1. the improvement structure of a silencing apparatus, it comprises housing, inlet tube, outer pipe; Described housing has the cavity of a sealing, is separated into three little cavitys by left clapboard and right clapboard in the cavity, respectively is the first resonant chamber, expansion chamber, the second resonant chamber; Described inlet tube and outer pipe insert respectively housing, and the part that they insert shell cavity is respectively import center tube and export center pipe, offers a plurality of apertures at the tube wall of import center tube and export center pipe; It is characterized in that: offer respectively a plurality of convection holes on described left clapboard and the right clapboard; Described import center tube and export center pipe insert housing from the left and right two ends of housing respectively and are parallel to each other; The insertion shell ends of described import center tube be connected with left clapboard and the tube chamber of import center tube and left clapboard on a convection holes in a plurality of convection holes be communicated with; The insertion shell ends of described export center pipe be connected with right clapboard and the tube chamber of export center pipe and right clapboard on a convection holes in a plurality of convection holes be communicated with.
2. the improvement structure of silencing apparatus according to claim 1, it is characterized in that: the length of described the first resonant chamber is two times of the second resonant chamber length, and the length of the first resonant chamber is 1/2nd of housing overall length.
3. the improvement structure of silencing apparatus according to claim 1, it is characterized in that: the parallel distance between described import center tube and the export center pipe is the 30-40 millimeter.
4. the improvement structure of silencing apparatus according to claim 1, it is characterized in that: the hole diameter on described import center tube and the export center tube wall is the 4-6 millimeter, and evenly distributes with identical spacing.
CN 201220493668 2012-09-21 2012-09-21 Improved structure of silencer Expired - Fee Related CN202811025U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220493668 CN202811025U (en) 2012-09-21 2012-09-21 Improved structure of silencer

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CN 201220493668 CN202811025U (en) 2012-09-21 2012-09-21 Improved structure of silencer

Publications (1)

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CN202811025U true CN202811025U (en) 2013-03-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111197520A (en) * 2020-02-24 2020-05-26 深圳联合飞机科技有限公司 Flexible exhaust system, engine and unmanned aerial vehicle
CN113482756A (en) * 2021-08-20 2021-10-08 泰豪电源技术有限公司 Exhaust muffler modular design method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111197520A (en) * 2020-02-24 2020-05-26 深圳联合飞机科技有限公司 Flexible exhaust system, engine and unmanned aerial vehicle
CN111197520B (en) * 2020-02-24 2021-07-20 深圳联合飞机科技有限公司 Flexible exhaust system, engine and unmanned aerial vehicle
CN113482756A (en) * 2021-08-20 2021-10-08 泰豪电源技术有限公司 Exhaust muffler modular design method

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130320

Termination date: 20200921

CF01 Termination of patent right due to non-payment of annual fee