GB408446A - Improvements in exhaust silencers - Google Patents
Improvements in exhaust silencersInfo
- Publication number
- GB408446A GB408446A GB9327/33A GB932733A GB408446A GB 408446 A GB408446 A GB 408446A GB 9327/33 A GB9327/33 A GB 9327/33A GB 932733 A GB932733 A GB 932733A GB 408446 A GB408446 A GB 408446A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- casing
- chambers
- intermediate chambers
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/085—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using a central core throttling gas passage
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
408,446. Exhaust-silencers. BELS, A. H. DE, 205, Avenue Gambetta, Bagnolet, Seine, France. March 28, 1933, Nos. 9327 and 9328. Convention dates, April 1, 1932 and July 19, 1932. [Class 7 (ii).] An exhaust-silencer comprises a preliminary chamber communicating with intermediate chambers arranged in a casing so that an annular space is formed between the two latter, the preliminary chamber forming part of a continuous axial space, and the intermediate chambers only being in direct communication with the annular space. In the form shown in Fig. 1, the preliminary chamber comprises a central tube 1 communicating by holes 5 with conical intermediate chambers 4, which are arranged with their bases toward the exit end and communicate by holes 6 with the annular space 3 formed between them and the surrounding casing 2. In modifications, the tube 1 may be stepped, or surrounded by concentric tubes of decreasing length, and the chambers 4 may be spherical or ovoid and the last one of the series may be of double conical form ; also baffles or perforated screens may be fitted in the tube or the chambers. Further, the cross section of the ports in successive intermediate chambers may decrease towards the outlet. Fig. 7 shows another form, in which the first intermediate chambers 4b fit tightly within the casing 2 and are non-rotatably mounted on a central tube 20 which is open at both ends to the atmosphere to avoid excessive heat expansion. The exhaust gases may enter at 21 or by bifurcated passages ; or they may enter by an annular chamber fitted on the end of the casing 2, the end of the tube 20 being then bifurcated where it passes through the annular chamber. The gases may also impinge on an ovoid body as they enter the silencer. The last chamber 31 is perforated at 32 and communicates with an outlet tube 36, which is surrounded by an annular extension 34 of the casing 2. Helical channels or tubes may be fitted in the annular space 34, and a helical blade may be arranged within the tube 36, and these helical passages may be of varying pitch. Means may be provided for blowing air into the tube 20.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR408446X | 1932-04-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB408446A true GB408446A (en) | 1934-04-12 |
Family
ID=8897421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9327/33A Expired GB408446A (en) | 1932-04-01 | 1933-03-28 | Improvements in exhaust silencers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB408446A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2514520A (en) * | 1946-06-03 | 1950-07-11 | Harry R Levy | Muffler with divided flow passages |
FR2349730A1 (en) * | 1976-04-30 | 1977-11-25 | Nihon Radiator Co | EXHAUST |
CN113958386A (en) * | 2021-12-22 | 2022-01-21 | 诸城市大路机械有限公司 | Exhaust device with silencing function |
CN114962347A (en) * | 2022-06-29 | 2022-08-30 | 广东顺博铝合金有限公司 | Air blower noise reduction device for aluminum ingot production workshop |
-
1933
- 1933-03-28 GB GB9327/33A patent/GB408446A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2514520A (en) * | 1946-06-03 | 1950-07-11 | Harry R Levy | Muffler with divided flow passages |
FR2349730A1 (en) * | 1976-04-30 | 1977-11-25 | Nihon Radiator Co | EXHAUST |
CN113958386A (en) * | 2021-12-22 | 2022-01-21 | 诸城市大路机械有限公司 | Exhaust device with silencing function |
CN113958386B (en) * | 2021-12-22 | 2022-02-25 | 诸城市大路机械有限公司 | Exhaust device with silencing function |
CN114962347A (en) * | 2022-06-29 | 2022-08-30 | 广东顺博铝合金有限公司 | Air blower noise reduction device for aluminum ingot production workshop |
CN114962347B (en) * | 2022-06-29 | 2024-06-04 | 广东顺博铝合金有限公司 | Noise reduction device of blower for aluminum ingot production workshop |
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