CN106640286A - Flame damping structure of silencer - Google Patents
Flame damping structure of silencer Download PDFInfo
- Publication number
- CN106640286A CN106640286A CN201710064081.5A CN201710064081A CN106640286A CN 106640286 A CN106640286 A CN 106640286A CN 201710064081 A CN201710064081 A CN 201710064081A CN 106640286 A CN106640286 A CN 106640286A
- Authority
- CN
- China
- Prior art keywords
- silencer
- flame
- muffler body
- screen pack
- blast pipe
- 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.)
- Pending
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 28
- 238000013016 damping Methods 0.000 title abstract 4
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 239000002912 waste gas Substances 0.000 claims abstract description 5
- 230000002265 prevention Effects 0.000 claims description 12
- 230000001404 mediated effect Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000008246 gaseous mixture Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/06—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks
-
- 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
- F01N2230/00—Combination of silencers and other devices
- F01N2230/04—Catalytic converters
-
- 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
- F01N2230/00—Combination of silencers and other devices
- F01N2230/06—Spark arresters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a flame damping structure of a silencer. The flame damping structure comprises a silencer body containing a catalyst and an exhaust pipe for exhausting waste gas. A fireproof cover combination is arranged at the joint between the exhaust pipe and an exhaust port of the silencer body. The fireproof cover combination is provided with a fireproof filter net and a fixing cap which are fixedly connected. The fireproof filter net is designed in a conical shape. When flame produced after secondary combustion of the catalyst passes through the fireproof cover combination, the flame is gathered through the conical fireproof filter net and then dispersed through net holes, so that the purpose of flame damping is achieved, the flaming problem of conventional hedge shearing machines containing catalytic agents is effectively solved, and the safety certification requirements of USDA and the like are met.
Description
Technical field
The present invention relates to general small-size gasoline engine technical field, more particularly to a kind of silencer flame arrest structure.
Background technology
It is to solve silencer flame at present due to arranging catalyst in the requirement of home and abroad discharge, uniform-charge Otto-engine silencer
Problem, Anti-flame structure is provided with muffler, such as：ZL201620362316.X, a kind of muffler Anti-flame structure will be conventional
Two cavity configurations of muffler are changed to three-cavity structure, i.e., one chamber is divided into two chambers with dividing plate, and are extended by increasing spoiler
Exhaust distance, solves muffler flame phenomenon.But for portable hedge trimmer, supporting gasoline engine is lightweight, volume
Little, the volume of corresponding silencer is also little, therefore, the flame arrest structure such as long path cannot be set in silencer, work as hedge trimming
It is full Light Condition during machine throttle wide, during by unloaded anticlimax to idling operation, the gaseous mixture for entering into cylinder interior cannot be complete
Full burning, unnecessary unburned gaseous mixture is discharged into inside silencer, when unburned gaseous mixture in silencer catalyst
When be heated under catalysis and light generation flame, flame Jing silencers exhaust outlet sprays, and causes hedgeclipper to there is peace
Full hidden danger, it is impossible to meet the Safety Approval requirement of U.S. USDA and developed countries, therefore, it is badly in need of a kind of muffler volume
Little, can go out flame, meet the silencer flame arrest structure that external Safety Approval is required.
The content of the invention
It is an object of the present invention to provide a kind of gasoline engine flame arrest structure, is prevented using installing one between silencer and blast pipe
Fire cover combination, when the flame produced in silencer prevents fires screen pack through taper, the mesh dispersion Jing after first collecting, so as to reach
Effectively the purpose of flame arrest, efficiently solves the flame problem that conventional hedgeclipper containing catalyst is present.
The present invention is adopted the technical scheme that：A kind of silencer flame arrest structure, including the muffler body for being built-in with catalyst
With discharge waste gas blast pipe, it is described it is characterized in that：It is provided with flameproof enclosure between the muffler body and blast pipe to combine, institute
State flameproof enclosure combination to be provided with the fire prevention screen pack of taper and connect firmly the locking cap of blast pipe and muffler body.
Preferably, the fire prevention screen pack is placed in blast pipe, and large awl end is connected with muffler body exhaust outlet.
Further, the little tapered end of the fire prevention screen pack is mediated and is integrated.
Preferably, the muffler body is divided into two chambers for communicating by dividing plate, and interior being provided with catalyst, chamber two in chamber one is provided with gear
Plate.
Further, the exhaust inner tube that one end is discharged waste gas outside muffler body is additionally provided with the chamber two.
Preferably, the mesh of the fire prevention screen pack is preferably 30 mesh～36 mesh.
The invention has the beneficial effects as follows flame during the anticlimax rotating speed of the presence of hedgeclipper containing catalyst is thoroughly solved the problems, such as,
Hedgeclipper containing catalyst is set to meet the items Safety Approval requirement such as U.S. USDA.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, originally shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.
Fig. 1 is the technical program acoustic wave filter structure schematic diagram；
Fig. 2 is the technical program flame arrest structural representation；
Fig. 3 is A direction views.
Number explanation in accompanying drawing 1：1st, blast pipe；2nd, little tapered end；3rd, flameproof enclosure combination；4th, muffler body exhaust outlet；5th, it is big
Tapered end；6th, it is vented inner tube；7th, muffler body；8th, through hole；9th, catalyst；10th, baffle plate；11st, dividing plate；12nd, locking cap；13rd, prevent fires
Screen pack；14th, chamber one；15th, chamber two.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, silencer flame arrest structure of the present invention includes muffler body 7（Catalyst 9, through hole 8, disappear
Sound device exhaust outlet 4, exhaust inner tube 6, baffle plate 10, dividing plate 11, chamber 1, chamber 2 15）, blast pipe 1 and flameproof enclosure combination 3（It is fixed
Cap 12, fire prevention screen pack 13, little tapered end 2, large awl end 5）.
It is provided with the dividing plate 11 of through hole 8 and will be divided into two chambers in muffler body 7, catalyst 9 is arranged on dividing plate 11 and is located at chamber one
In 14, with the Guan County of baffle plate 10 in chamber 2 15, the silencer exhaust outlet 4 for being vented inner tube 6 stretches out outside muffler body 7 exhaust inner tube 6.
Fire prevention screen pack 13 is connected firmly with locking cap 12 and combines 3 for flameproof enclosure, and the little tapered end 2 of the fire prevention screen pack 13 of taper is pinched
It is integrated, flameproof enclosure combines 3 one end and is connected with silencer exhaust outlet 4, and the other end is connected with the end of blast pipe 1, and fire prevention is filtered
The little tapered end 2 of net 13 is in blast pipe 1.
Through hole 8, baffle plate 10, exhaust inner tube are sequentially passed through when gaseous mixture produces the gas with fire combustion Jing after the burning of catalyst 9
6th, silencer exhaust outlet 4, fire prevention screen pack 13, blast pipe 1 are discharged.
The invention has the beneficial effects as follows solving hedgeclipper containing catalyst because muffler volume is little, fire extinguishing structure setting
Flame problem during the anticlimax rotating speed for simply existing, in muffler body exhaust ports simple structure, low cost are dexterously increased
Flameproof enclosure combination fire extinguishing structure, when in silencer produce flame through taper prevent fires screen pack when, the mesh Jing after first collecting
Dispersion, so as to reach the purpose of effective flame arrest, thoroughly solves the flame phenomenon of silencer, makes the portable hedge trimming containing catalyst
Machine can meet the Anti-flame authentication requesting such as U.S. USDA.
Obviously the present invention is implemented and is not subject to the restrictions described above, as long as employing method of the present invention design and skill
The improvement of the various unsubstantialities that art scheme is carried out, within protection scope of the present invention.
Claims (6)
1. a kind of silencer flame arrest structure, including the muffler body for being built-in with catalyst and discharges the blast pipe of waste gas, it is described its
It is characterised by：It is provided with flameproof enclosure between the muffler body and blast pipe to combine, the flameproof enclosure combination is provided with the anti-of taper
Fiery screen pack and connect firmly the locking cap of blast pipe and muffler body.
2. silencer flame arrest structure according to claim 1, it is characterised in that：The fire prevention screen pack is placed on blast pipe
It is interior, and large awl end is connected with muffler body exhaust outlet.
3. silencer flame arrest structure according to claim 2, it is characterised in that：The little tapered end of the fire prevention screen pack is mediated
It is integrated.
4. silencer flame arrest structure according to claim 1, it is characterised in that：The muffler body is divided into by dividing plate and communicating
Two chambers, is provided with chamber one in catalyst, chamber two and is provided with baffle plate.
5. silencer flame arrest structure according to claim 4, it is characterised in that：In the chamber two one end is additionally provided with by waste gas
Discharge the exhaust inner tube outside muffler body.
6. any one of the silencer flame arrest structure according to claim 1 to 5, it is characterised in that：The fire prevention screen pack
Mesh is preferably 30 mesh～36 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064081.5A CN106640286A (en) | 2017-02-04 | 2017-02-04 | Flame damping structure of silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064081.5A CN106640286A (en) | 2017-02-04 | 2017-02-04 | Flame damping structure of silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106640286A true CN106640286A (en) | 2017-05-10 |
Family
ID=58844474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710064081.5A Pending CN106640286A (en) | 2017-02-04 | 2017-02-04 | Flame damping structure of silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640286A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07102946A (en) * | 1993-10-01 | 1995-04-18 | Yamaha Motor Co Ltd | Spark arrester |
| US6010549A (en) * | 1997-06-23 | 2000-01-04 | Honda Giken Kogyo Kabushiki Kaisha | Spark arrester of muffler |
| US20040089500A1 (en) * | 2002-10-31 | 2004-05-13 | White Brothers Performance Products, Inc. | Muffler with spark arrestor |
| CN200961500Y (en) * | 2006-10-16 | 2007-10-17 | 力帆实业(集团)有限公司 | Motorcycle muffler flame-extinguishing net combination |
| US20110277454A1 (en) * | 2010-05-11 | 2011-11-17 | Cummins Filtration Ip, Inc | Apparatus and system for trapping debris and arresting sparks |
| CN103603712A (en) * | 2013-11-06 | 2014-02-26 | 涛涛集团有限公司 | Silencer used for small-size gasoline engine |
| CN206503626U (en) * | 2017-02-04 | 2017-09-19 | 山东华盛农业药械有限责任公司 | A kind of silencer flame arrest structure |
-
2017
- 2017-02-04 CN CN201710064081.5A patent/CN106640286A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07102946A (en) * | 1993-10-01 | 1995-04-18 | Yamaha Motor Co Ltd | Spark arrester |
| US6010549A (en) * | 1997-06-23 | 2000-01-04 | Honda Giken Kogyo Kabushiki Kaisha | Spark arrester of muffler |
| US20040089500A1 (en) * | 2002-10-31 | 2004-05-13 | White Brothers Performance Products, Inc. | Muffler with spark arrestor |
| CN200961500Y (en) * | 2006-10-16 | 2007-10-17 | 力帆实业(集团)有限公司 | Motorcycle muffler flame-extinguishing net combination |
| US20110277454A1 (en) * | 2010-05-11 | 2011-11-17 | Cummins Filtration Ip, Inc | Apparatus and system for trapping debris and arresting sparks |
| CN103603712A (en) * | 2013-11-06 | 2014-02-26 | 涛涛集团有限公司 | Silencer used for small-size gasoline engine |
| CN206503626U (en) * | 2017-02-04 | 2017-09-19 | 山东华盛农业药械有限责任公司 | A kind of silencer flame arrest structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |